sta_info.c revision f21452aea786ac056eb01f1cbba4f553bd502747
1/* 2 * hostapd / Station table 3 * Copyright (c) 2002-2013, 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 "common/sae.h" 16#include "radius/radius.h" 17#include "radius/radius_client.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 "wnm_ap.h" 34#include "sta_info.h" 35 36static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd, 37 struct sta_info *sta); 38static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx); 39static void ap_handle_session_warning_timer(void *eloop_ctx, void *timeout_ctx); 40static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx); 41static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx); 42#ifdef CONFIG_IEEE80211W 43static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx); 44#endif /* CONFIG_IEEE80211W */ 45static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta); 46 47int ap_for_each_sta(struct hostapd_data *hapd, 48 int (*cb)(struct hostapd_data *hapd, struct sta_info *sta, 49 void *ctx), 50 void *ctx) 51{ 52 struct sta_info *sta; 53 54 for (sta = hapd->sta_list; sta; sta = sta->next) { 55 if (cb(hapd, sta, ctx)) 56 return 1; 57 } 58 59 return 0; 60} 61 62 63struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta) 64{ 65 struct sta_info *s; 66 67 s = hapd->sta_hash[STA_HASH(sta)]; 68 while (s != NULL && os_memcmp(s->addr, sta, 6) != 0) 69 s = s->hnext; 70 return s; 71} 72 73 74#ifdef CONFIG_P2P 75struct sta_info * ap_get_sta_p2p(struct hostapd_data *hapd, const u8 *addr) 76{ 77 struct sta_info *sta; 78 79 for (sta = hapd->sta_list; sta; sta = sta->next) { 80 const u8 *p2p_dev_addr; 81 82 if (sta->p2p_ie == NULL) 83 continue; 84 85 p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie); 86 if (p2p_dev_addr == NULL) 87 continue; 88 89 if (os_memcmp(p2p_dev_addr, addr, ETH_ALEN) == 0) 90 return sta; 91 } 92 93 return NULL; 94} 95#endif /* CONFIG_P2P */ 96 97 98static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta) 99{ 100 struct sta_info *tmp; 101 102 if (hapd->sta_list == sta) { 103 hapd->sta_list = sta->next; 104 return; 105 } 106 107 tmp = hapd->sta_list; 108 while (tmp != NULL && tmp->next != sta) 109 tmp = tmp->next; 110 if (tmp == NULL) { 111 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from " 112 "list.", MAC2STR(sta->addr)); 113 } else 114 tmp->next = sta->next; 115} 116 117 118void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta) 119{ 120 sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)]; 121 hapd->sta_hash[STA_HASH(sta->addr)] = sta; 122} 123 124 125static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta) 126{ 127 struct sta_info *s; 128 129 s = hapd->sta_hash[STA_HASH(sta->addr)]; 130 if (s == NULL) return; 131 if (os_memcmp(s->addr, sta->addr, 6) == 0) { 132 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext; 133 return; 134 } 135 136 while (s->hnext != NULL && 137 os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0) 138 s = s->hnext; 139 if (s->hnext != NULL) 140 s->hnext = s->hnext->hnext; 141 else 142 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR 143 " from hash table", MAC2STR(sta->addr)); 144} 145 146 147void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta) 148{ 149 int set_beacon = 0; 150 151 accounting_sta_stop(hapd, sta); 152 153 /* just in case */ 154 ap_sta_set_authorized(hapd, sta, 0); 155 156 if (sta->flags & WLAN_STA_WDS) 157 hostapd_set_wds_sta(hapd, NULL, sta->addr, sta->aid, 0); 158 159 if (!(sta->flags & WLAN_STA_PREAUTH)) 160 hostapd_drv_sta_remove(hapd, sta->addr); 161 162 ap_sta_hash_del(hapd, sta); 163 ap_sta_list_del(hapd, sta); 164 165 if (sta->aid > 0) 166 hapd->sta_aid[(sta->aid - 1) / 32] &= 167 ~BIT((sta->aid - 1) % 32); 168 169 hapd->num_sta--; 170 if (sta->nonerp_set) { 171 sta->nonerp_set = 0; 172 hapd->iface->num_sta_non_erp--; 173 if (hapd->iface->num_sta_non_erp == 0) 174 set_beacon++; 175 } 176 177 if (sta->no_short_slot_time_set) { 178 sta->no_short_slot_time_set = 0; 179 hapd->iface->num_sta_no_short_slot_time--; 180 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G 181 && hapd->iface->num_sta_no_short_slot_time == 0) 182 set_beacon++; 183 } 184 185 if (sta->no_short_preamble_set) { 186 sta->no_short_preamble_set = 0; 187 hapd->iface->num_sta_no_short_preamble--; 188 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G 189 && hapd->iface->num_sta_no_short_preamble == 0) 190 set_beacon++; 191 } 192 193 if (sta->no_ht_gf_set) { 194 sta->no_ht_gf_set = 0; 195 hapd->iface->num_sta_ht_no_gf--; 196 } 197 198 if (sta->no_ht_set) { 199 sta->no_ht_set = 0; 200 hapd->iface->num_sta_no_ht--; 201 } 202 203 if (sta->ht_20mhz_set) { 204 sta->ht_20mhz_set = 0; 205 hapd->iface->num_sta_ht_20mhz--; 206 } 207 208#ifdef CONFIG_P2P 209 if (sta->no_p2p_set) { 210 sta->no_p2p_set = 0; 211 hapd->num_sta_no_p2p--; 212 if (hapd->num_sta_no_p2p == 0) 213 hostapd_p2p_non_p2p_sta_disconnected(hapd); 214 } 215#endif /* CONFIG_P2P */ 216 217#if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N) 218 if (hostapd_ht_operation_update(hapd->iface) > 0) 219 set_beacon++; 220#endif /* NEED_AP_MLME && CONFIG_IEEE80211N */ 221 222 if (set_beacon) 223 ieee802_11_set_beacons(hapd->iface); 224 225 wpa_printf(MSG_DEBUG, "%s: cancel ap_handle_timer for " MACSTR, 226 __func__, MAC2STR(sta->addr)); 227 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 228 eloop_cancel_timeout(ap_handle_session_timer, hapd, sta); 229 eloop_cancel_timeout(ap_handle_session_warning_timer, hapd, sta); 230 eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta); 231 eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta); 232 233 ieee802_1x_free_station(sta); 234 wpa_auth_sta_deinit(sta->wpa_sm); 235 rsn_preauth_free_station(hapd, sta); 236#ifndef CONFIG_NO_RADIUS 237 if (hapd->radius) 238 radius_client_flush_auth(hapd->radius, sta->addr); 239#endif /* CONFIG_NO_RADIUS */ 240 241 os_free(sta->last_assoc_req); 242 os_free(sta->challenge); 243 244#ifdef CONFIG_IEEE80211W 245 os_free(sta->sa_query_trans_id); 246 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta); 247#endif /* CONFIG_IEEE80211W */ 248 249#ifdef CONFIG_P2P 250 p2p_group_notif_disassoc(hapd->p2p_group, sta->addr); 251#endif /* CONFIG_P2P */ 252 253#ifdef CONFIG_INTERWORKING 254 if (sta->gas_dialog) { 255 int i; 256 for (i = 0; i < GAS_DIALOG_MAX; i++) 257 gas_serv_dialog_clear(&sta->gas_dialog[i]); 258 os_free(sta->gas_dialog); 259 } 260#endif /* CONFIG_INTERWORKING */ 261 262 wpabuf_free(sta->wps_ie); 263 wpabuf_free(sta->p2p_ie); 264 wpabuf_free(sta->hs20_ie); 265 266 os_free(sta->ht_capabilities); 267 os_free(sta->vht_capabilities); 268 hostapd_free_psk_list(sta->psk); 269 os_free(sta->identity); 270 os_free(sta->radius_cui); 271 os_free(sta->remediation_url); 272 wpabuf_free(sta->hs20_deauth_req); 273 os_free(sta->hs20_session_info_url); 274 275#ifdef CONFIG_SAE 276 sae_clear_data(sta->sae); 277 os_free(sta->sae); 278#endif /* CONFIG_SAE */ 279 280 os_free(sta); 281} 282 283 284void hostapd_free_stas(struct hostapd_data *hapd) 285{ 286 struct sta_info *sta, *prev; 287 288 sta = hapd->sta_list; 289 290 while (sta) { 291 prev = sta; 292 if (sta->flags & WLAN_STA_AUTH) { 293 mlme_deauthenticate_indication( 294 hapd, sta, WLAN_REASON_UNSPECIFIED); 295 } 296 sta = sta->next; 297 wpa_printf(MSG_DEBUG, "Removing station " MACSTR, 298 MAC2STR(prev->addr)); 299 ap_free_sta(hapd, prev); 300 } 301} 302 303 304/** 305 * ap_handle_timer - Per STA timer handler 306 * @eloop_ctx: struct hostapd_data * 307 * @timeout_ctx: struct sta_info * 308 * 309 * This function is called to check station activity and to remove inactive 310 * stations. 311 */ 312void ap_handle_timer(void *eloop_ctx, void *timeout_ctx) 313{ 314 struct hostapd_data *hapd = eloop_ctx; 315 struct sta_info *sta = timeout_ctx; 316 unsigned long next_time = 0; 317 int reason; 318 319 wpa_printf(MSG_DEBUG, "%s: " MACSTR " flags=0x%x timeout_next=%d", 320 __func__, MAC2STR(sta->addr), sta->flags, 321 sta->timeout_next); 322 if (sta->timeout_next == STA_REMOVE) { 323 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 324 HOSTAPD_LEVEL_INFO, "deauthenticated due to " 325 "local deauth request"); 326 ap_free_sta(hapd, sta); 327 return; 328 } 329 330 if ((sta->flags & WLAN_STA_ASSOC) && 331 (sta->timeout_next == STA_NULLFUNC || 332 sta->timeout_next == STA_DISASSOC)) { 333 int inactive_sec; 334 /* 335 * Add random value to timeout so that we don't end up bouncing 336 * all stations at the same time if we have lots of associated 337 * stations that are idle (but keep re-associating). 338 */ 339 int fuzz = os_random() % 20; 340 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr); 341 if (inactive_sec == -1) { 342 wpa_msg(hapd->msg_ctx, MSG_DEBUG, 343 "Check inactivity: Could not " 344 "get station info from kernel driver for " 345 MACSTR, MAC2STR(sta->addr)); 346 /* 347 * The driver may not support this functionality. 348 * Anyway, try again after the next inactivity timeout, 349 * but do not disconnect the station now. 350 */ 351 next_time = hapd->conf->ap_max_inactivity + fuzz; 352 } else if (inactive_sec < hapd->conf->ap_max_inactivity && 353 sta->flags & WLAN_STA_ASSOC) { 354 /* station activity detected; reset timeout state */ 355 wpa_msg(hapd->msg_ctx, MSG_DEBUG, 356 "Station " MACSTR " has been active %is ago", 357 MAC2STR(sta->addr), inactive_sec); 358 sta->timeout_next = STA_NULLFUNC; 359 next_time = hapd->conf->ap_max_inactivity + fuzz - 360 inactive_sec; 361 } else { 362 wpa_msg(hapd->msg_ctx, MSG_DEBUG, 363 "Station " MACSTR " has been " 364 "inactive too long: %d sec, max allowed: %d", 365 MAC2STR(sta->addr), inactive_sec, 366 hapd->conf->ap_max_inactivity); 367 368 if (hapd->conf->skip_inactivity_poll) 369 sta->timeout_next = STA_DISASSOC; 370 } 371 } 372 373 if ((sta->flags & WLAN_STA_ASSOC) && 374 sta->timeout_next == STA_DISASSOC && 375 !(sta->flags & WLAN_STA_PENDING_POLL) && 376 !hapd->conf->skip_inactivity_poll) { 377 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR 378 " has ACKed data poll", MAC2STR(sta->addr)); 379 /* data nullfunc frame poll did not produce TX errors; assume 380 * station ACKed it */ 381 sta->timeout_next = STA_NULLFUNC; 382 next_time = hapd->conf->ap_max_inactivity; 383 } 384 385 if (next_time) { 386 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout " 387 "for " MACSTR " (%lu seconds)", 388 __func__, MAC2STR(sta->addr), next_time); 389 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd, 390 sta); 391 return; 392 } 393 394 if (sta->timeout_next == STA_NULLFUNC && 395 (sta->flags & WLAN_STA_ASSOC)) { 396 wpa_printf(MSG_DEBUG, " Polling STA"); 397 sta->flags |= WLAN_STA_PENDING_POLL; 398 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr, 399 sta->flags & WLAN_STA_WMM); 400 } else if (sta->timeout_next != STA_REMOVE) { 401 int deauth = sta->timeout_next == STA_DEAUTH; 402 403 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, 404 "Timeout, sending %s info to STA " MACSTR, 405 deauth ? "deauthentication" : "disassociation", 406 MAC2STR(sta->addr)); 407 408 if (deauth) { 409 hostapd_drv_sta_deauth( 410 hapd, sta->addr, 411 WLAN_REASON_PREV_AUTH_NOT_VALID); 412 } else { 413 reason = (sta->timeout_next == STA_DISASSOC) ? 414 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY : 415 WLAN_REASON_PREV_AUTH_NOT_VALID; 416 417 hostapd_drv_sta_disassoc(hapd, sta->addr, reason); 418 } 419 } 420 421 switch (sta->timeout_next) { 422 case STA_NULLFUNC: 423 sta->timeout_next = STA_DISASSOC; 424 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout " 425 "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)", 426 __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY); 427 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer, 428 hapd, sta); 429 break; 430 case STA_DISASSOC: 431 case STA_DISASSOC_FROM_CLI: 432 ap_sta_set_authorized(hapd, sta, 0); 433 sta->flags &= ~WLAN_STA_ASSOC; 434 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 435 if (!sta->acct_terminate_cause) 436 sta->acct_terminate_cause = 437 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT; 438 accounting_sta_stop(hapd, sta); 439 ieee802_1x_free_station(sta); 440 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 441 HOSTAPD_LEVEL_INFO, "disassociated due to " 442 "inactivity"); 443 reason = (sta->timeout_next == STA_DISASSOC) ? 444 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY : 445 WLAN_REASON_PREV_AUTH_NOT_VALID; 446 sta->timeout_next = STA_DEAUTH; 447 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout " 448 "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)", 449 __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY); 450 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer, 451 hapd, sta); 452 mlme_disassociate_indication(hapd, sta, reason); 453 break; 454 case STA_DEAUTH: 455 case STA_REMOVE: 456 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 457 HOSTAPD_LEVEL_INFO, "deauthenticated due to " 458 "inactivity (timer DEAUTH/REMOVE)"); 459 if (!sta->acct_terminate_cause) 460 sta->acct_terminate_cause = 461 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT; 462 mlme_deauthenticate_indication( 463 hapd, sta, 464 WLAN_REASON_PREV_AUTH_NOT_VALID); 465 ap_free_sta(hapd, sta); 466 break; 467 } 468} 469 470 471static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx) 472{ 473 struct hostapd_data *hapd = eloop_ctx; 474 struct sta_info *sta = timeout_ctx; 475 u8 addr[ETH_ALEN]; 476 477 if (!(sta->flags & WLAN_STA_AUTH)) { 478 if (sta->flags & WLAN_STA_GAS) { 479 wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA " 480 "entry " MACSTR, MAC2STR(sta->addr)); 481 ap_free_sta(hapd, sta); 482 } 483 return; 484 } 485 486 mlme_deauthenticate_indication(hapd, sta, 487 WLAN_REASON_PREV_AUTH_NOT_VALID); 488 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 489 HOSTAPD_LEVEL_INFO, "deauthenticated due to " 490 "session timeout"); 491 sta->acct_terminate_cause = 492 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT; 493 os_memcpy(addr, sta->addr, ETH_ALEN); 494 ap_free_sta(hapd, sta); 495 hostapd_drv_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID); 496} 497 498 499void ap_sta_replenish_timeout(struct hostapd_data *hapd, struct sta_info *sta, 500 u32 session_timeout) 501{ 502 if (eloop_replenish_timeout(session_timeout, 0, 503 ap_handle_session_timer, hapd, sta) == 1) { 504 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 505 HOSTAPD_LEVEL_DEBUG, "setting session timeout " 506 "to %d seconds", session_timeout); 507 } 508} 509 510 511void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta, 512 u32 session_timeout) 513{ 514 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 515 HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d " 516 "seconds", session_timeout); 517 eloop_cancel_timeout(ap_handle_session_timer, hapd, sta); 518 eloop_register_timeout(session_timeout, 0, ap_handle_session_timer, 519 hapd, sta); 520} 521 522 523void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta) 524{ 525 eloop_cancel_timeout(ap_handle_session_timer, hapd, sta); 526} 527 528 529static void ap_handle_session_warning_timer(void *eloop_ctx, void *timeout_ctx) 530{ 531#ifdef CONFIG_WNM 532 struct hostapd_data *hapd = eloop_ctx; 533 struct sta_info *sta = timeout_ctx; 534 535 wpa_printf(MSG_DEBUG, "WNM: Session warning time reached for " MACSTR, 536 MAC2STR(sta->addr)); 537 if (sta->hs20_session_info_url == NULL) 538 return; 539 540 wnm_send_ess_disassoc_imminent(hapd, sta, sta->hs20_session_info_url, 541 sta->hs20_disassoc_timer); 542#endif /* CONFIG_WNM */ 543} 544 545 546void ap_sta_session_warning_timeout(struct hostapd_data *hapd, 547 struct sta_info *sta, int warning_time) 548{ 549 eloop_cancel_timeout(ap_handle_session_warning_timer, hapd, sta); 550 eloop_register_timeout(warning_time, 0, ap_handle_session_warning_timer, 551 hapd, sta); 552} 553 554 555struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr) 556{ 557 struct sta_info *sta; 558 559 sta = ap_get_sta(hapd, addr); 560 if (sta) 561 return sta; 562 563 wpa_printf(MSG_DEBUG, " New STA"); 564 if (hapd->num_sta >= hapd->conf->max_num_sta) { 565 /* FIX: might try to remove some old STAs first? */ 566 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)", 567 hapd->num_sta, hapd->conf->max_num_sta); 568 return NULL; 569 } 570 571 sta = os_zalloc(sizeof(struct sta_info)); 572 if (sta == NULL) { 573 wpa_printf(MSG_ERROR, "malloc failed"); 574 return NULL; 575 } 576 sta->acct_interim_interval = hapd->conf->acct_interim_interval; 577 accounting_sta_get_id(hapd, sta); 578 579 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) { 580 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout " 581 "for " MACSTR " (%d seconds - ap_max_inactivity)", 582 __func__, MAC2STR(addr), 583 hapd->conf->ap_max_inactivity); 584 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0, 585 ap_handle_timer, hapd, sta); 586 } 587 588 /* initialize STA info data */ 589 os_memcpy(sta->addr, addr, ETH_ALEN); 590 sta->next = hapd->sta_list; 591 hapd->sta_list = sta; 592 hapd->num_sta++; 593 ap_sta_hash_add(hapd, sta); 594 sta->ssid = &hapd->conf->ssid; 595 ap_sta_remove_in_other_bss(hapd, sta); 596 597 return sta; 598} 599 600 601static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta) 602{ 603 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 604 605 wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver", 606 MAC2STR(sta->addr)); 607 if (hostapd_drv_sta_remove(hapd, sta->addr) && 608 sta->flags & WLAN_STA_ASSOC) { 609 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR 610 " from kernel driver.", MAC2STR(sta->addr)); 611 return -1; 612 } 613 return 0; 614} 615 616 617static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd, 618 struct sta_info *sta) 619{ 620 struct hostapd_iface *iface = hapd->iface; 621 size_t i; 622 623 for (i = 0; i < iface->num_bss; i++) { 624 struct hostapd_data *bss = iface->bss[i]; 625 struct sta_info *sta2; 626 /* bss should always be set during operation, but it may be 627 * NULL during reconfiguration. Assume the STA is not 628 * associated to another BSS in that case to avoid NULL pointer 629 * dereferences. */ 630 if (bss == hapd || bss == NULL) 631 continue; 632 sta2 = ap_get_sta(bss, sta->addr); 633 if (!sta2) 634 continue; 635 636 ap_sta_disconnect(bss, sta2, sta2->addr, 637 WLAN_REASON_PREV_AUTH_NOT_VALID); 638 } 639} 640 641 642static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx) 643{ 644 struct hostapd_data *hapd = eloop_ctx; 645 struct sta_info *sta = timeout_ctx; 646 647 ap_sta_remove(hapd, sta); 648 mlme_disassociate_indication(hapd, sta, sta->disassoc_reason); 649} 650 651 652void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta, 653 u16 reason) 654{ 655 wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR, 656 hapd->conf->iface, MAC2STR(sta->addr)); 657 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK); 658 ap_sta_set_authorized(hapd, sta, 0); 659 sta->timeout_next = STA_DEAUTH; 660 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout " 661 "for " MACSTR " (%d seconds - " 662 "AP_MAX_INACTIVITY_AFTER_DISASSOC)", 663 __func__, MAC2STR(sta->addr), 664 AP_MAX_INACTIVITY_AFTER_DISASSOC); 665 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 666 eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0, 667 ap_handle_timer, hapd, sta); 668 accounting_sta_stop(hapd, sta); 669 ieee802_1x_free_station(sta); 670 671 sta->disassoc_reason = reason; 672 sta->flags |= WLAN_STA_PENDING_DISASSOC_CB; 673 eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta); 674 eloop_register_timeout(hapd->iface->drv_flags & 675 WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0, 676 ap_sta_disassoc_cb_timeout, hapd, sta); 677} 678 679 680static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx) 681{ 682 struct hostapd_data *hapd = eloop_ctx; 683 struct sta_info *sta = timeout_ctx; 684 685 ap_sta_remove(hapd, sta); 686 mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason); 687} 688 689 690void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta, 691 u16 reason) 692{ 693 wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR, 694 hapd->conf->iface, MAC2STR(sta->addr)); 695 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); 696 ap_sta_set_authorized(hapd, sta, 0); 697 sta->timeout_next = STA_REMOVE; 698 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout " 699 "for " MACSTR " (%d seconds - " 700 "AP_MAX_INACTIVITY_AFTER_DEAUTH)", 701 __func__, MAC2STR(sta->addr), 702 AP_MAX_INACTIVITY_AFTER_DEAUTH); 703 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 704 eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0, 705 ap_handle_timer, hapd, sta); 706 accounting_sta_stop(hapd, sta); 707 ieee802_1x_free_station(sta); 708 709 sta->deauth_reason = reason; 710 sta->flags |= WLAN_STA_PENDING_DEAUTH_CB; 711 eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta); 712 eloop_register_timeout(hapd->iface->drv_flags & 713 WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0, 714 ap_sta_deauth_cb_timeout, hapd, sta); 715} 716 717 718#ifdef CONFIG_WPS 719int ap_sta_wps_cancel(struct hostapd_data *hapd, 720 struct sta_info *sta, void *ctx) 721{ 722 if (sta && (sta->flags & WLAN_STA_WPS)) { 723 ap_sta_deauthenticate(hapd, sta, 724 WLAN_REASON_PREV_AUTH_NOT_VALID); 725 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR, 726 __func__, MAC2STR(sta->addr)); 727 return 1; 728 } 729 730 return 0; 731} 732#endif /* CONFIG_WPS */ 733 734 735int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta, 736 int old_vlanid) 737{ 738#ifndef CONFIG_NO_VLAN 739 const char *iface; 740 struct hostapd_vlan *vlan = NULL; 741 int ret; 742 743 /* 744 * Do not proceed furthur if the vlan id remains same. We do not want 745 * duplicate dynamic vlan entries. 746 */ 747 if (sta->vlan_id == old_vlanid) 748 return 0; 749 750 /* 751 * During 1x reauth, if the vlan id changes, then remove the old id and 752 * proceed furthur to add the new one. 753 */ 754 if (old_vlanid > 0) 755 vlan_remove_dynamic(hapd, old_vlanid); 756 757 iface = hapd->conf->iface; 758 if (sta->ssid->vlan[0]) 759 iface = sta->ssid->vlan; 760 761 if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED) 762 sta->vlan_id = 0; 763 else if (sta->vlan_id > 0) { 764 struct hostapd_vlan *wildcard_vlan = NULL; 765 vlan = hapd->conf->vlan; 766 while (vlan) { 767 if (vlan->vlan_id == sta->vlan_id) 768 break; 769 if (vlan->vlan_id == VLAN_ID_WILDCARD) 770 wildcard_vlan = vlan; 771 vlan = vlan->next; 772 } 773 if (!vlan) 774 vlan = wildcard_vlan; 775 if (vlan) 776 iface = vlan->ifname; 777 } 778 779 if (sta->vlan_id > 0 && vlan == NULL) { 780 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 781 HOSTAPD_LEVEL_DEBUG, "could not find VLAN for " 782 "binding station to (vlan_id=%d)", 783 sta->vlan_id); 784 return -1; 785 } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) { 786 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id); 787 if (vlan == NULL) { 788 hostapd_logger(hapd, sta->addr, 789 HOSTAPD_MODULE_IEEE80211, 790 HOSTAPD_LEVEL_DEBUG, "could not add " 791 "dynamic VLAN interface for vlan_id=%d", 792 sta->vlan_id); 793 return -1; 794 } 795 796 iface = vlan->ifname; 797 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) { 798 hostapd_logger(hapd, sta->addr, 799 HOSTAPD_MODULE_IEEE80211, 800 HOSTAPD_LEVEL_DEBUG, "could not " 801 "configure encryption for dynamic VLAN " 802 "interface for vlan_id=%d", 803 sta->vlan_id); 804 } 805 806 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 807 HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN " 808 "interface '%s'", iface); 809 } else if (vlan && vlan->vlan_id == sta->vlan_id) { 810 if (sta->vlan_id > 0) { 811 vlan->dynamic_vlan++; 812 hostapd_logger(hapd, sta->addr, 813 HOSTAPD_MODULE_IEEE80211, 814 HOSTAPD_LEVEL_DEBUG, "updated existing " 815 "dynamic VLAN interface '%s'", iface); 816 } 817 818 /* 819 * Update encryption configuration for statically generated 820 * VLAN interface. This is only used for static WEP 821 * configuration for the case where hostapd did not yet know 822 * which keys are to be used when the interface was added. 823 */ 824 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) { 825 hostapd_logger(hapd, sta->addr, 826 HOSTAPD_MODULE_IEEE80211, 827 HOSTAPD_LEVEL_DEBUG, "could not " 828 "configure encryption for VLAN " 829 "interface for vlan_id=%d", 830 sta->vlan_id); 831 } 832 } 833 834 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 835 HOSTAPD_LEVEL_DEBUG, "binding station to interface " 836 "'%s'", iface); 837 838 if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0) 839 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA"); 840 841 ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id); 842 if (ret < 0) { 843 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 844 HOSTAPD_LEVEL_DEBUG, "could not bind the STA " 845 "entry to vlan_id=%d", sta->vlan_id); 846 } 847 return ret; 848#else /* CONFIG_NO_VLAN */ 849 return 0; 850#endif /* CONFIG_NO_VLAN */ 851} 852 853 854#ifdef CONFIG_IEEE80211W 855 856int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta) 857{ 858 u32 tu; 859 struct os_reltime now, passed; 860 os_get_reltime(&now); 861 os_reltime_sub(&now, &sta->sa_query_start, &passed); 862 tu = (passed.sec * 1000000 + passed.usec) / 1024; 863 if (hapd->conf->assoc_sa_query_max_timeout < tu) { 864 hostapd_logger(hapd, sta->addr, 865 HOSTAPD_MODULE_IEEE80211, 866 HOSTAPD_LEVEL_DEBUG, 867 "association SA Query timed out"); 868 sta->sa_query_timed_out = 1; 869 os_free(sta->sa_query_trans_id); 870 sta->sa_query_trans_id = NULL; 871 sta->sa_query_count = 0; 872 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta); 873 return 1; 874 } 875 876 return 0; 877} 878 879 880static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx) 881{ 882 struct hostapd_data *hapd = eloop_ctx; 883 struct sta_info *sta = timeout_ctx; 884 unsigned int timeout, sec, usec; 885 u8 *trans_id, *nbuf; 886 887 if (sta->sa_query_count > 0 && 888 ap_check_sa_query_timeout(hapd, sta)) 889 return; 890 891 nbuf = os_realloc_array(sta->sa_query_trans_id, 892 sta->sa_query_count + 1, 893 WLAN_SA_QUERY_TR_ID_LEN); 894 if (nbuf == NULL) 895 return; 896 if (sta->sa_query_count == 0) { 897 /* Starting a new SA Query procedure */ 898 os_get_reltime(&sta->sa_query_start); 899 } 900 trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; 901 sta->sa_query_trans_id = nbuf; 902 sta->sa_query_count++; 903 904 os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); 905 906 timeout = hapd->conf->assoc_sa_query_retry_timeout; 907 sec = ((timeout / 1000) * 1024) / 1000; 908 usec = (timeout % 1000) * 1024; 909 eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta); 910 911 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211, 912 HOSTAPD_LEVEL_DEBUG, 913 "association SA Query attempt %d", sta->sa_query_count); 914 915 ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id); 916} 917 918 919void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta) 920{ 921 ap_sa_query_timer(hapd, sta); 922} 923 924 925void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta) 926{ 927 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta); 928 os_free(sta->sa_query_trans_id); 929 sta->sa_query_trans_id = NULL; 930 sta->sa_query_count = 0; 931} 932 933#endif /* CONFIG_IEEE80211W */ 934 935 936void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta, 937 int authorized) 938{ 939 const u8 *dev_addr = NULL; 940 char buf[100]; 941#ifdef CONFIG_P2P 942 u8 addr[ETH_ALEN]; 943 u8 ip_addr_buf[4]; 944#endif /* CONFIG_P2P */ 945 946 if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED)) 947 return; 948 949#ifdef CONFIG_P2P 950 if (hapd->p2p_group == NULL) { 951 if (sta->p2p_ie != NULL && 952 p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0) 953 dev_addr = addr; 954 } else 955 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr); 956#endif /* CONFIG_P2P */ 957 958 if (dev_addr) 959 os_snprintf(buf, sizeof(buf), MACSTR " p2p_dev_addr=" MACSTR, 960 MAC2STR(sta->addr), MAC2STR(dev_addr)); 961 else 962 os_snprintf(buf, sizeof(buf), MACSTR, MAC2STR(sta->addr)); 963 964 if (authorized) { 965 char ip_addr[100]; 966 ip_addr[0] = '\0'; 967#ifdef CONFIG_P2P 968 if (wpa_auth_get_ip_addr(sta->wpa_sm, ip_addr_buf) == 0) { 969 os_snprintf(ip_addr, sizeof(ip_addr), 970 " ip_addr=%u.%u.%u.%u", 971 ip_addr_buf[0], ip_addr_buf[1], 972 ip_addr_buf[2], ip_addr_buf[3]); 973 } 974#endif /* CONFIG_P2P */ 975 976 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED "%s%s", 977 buf, ip_addr); 978 979 if (hapd->msg_ctx_parent && 980 hapd->msg_ctx_parent != hapd->msg_ctx) 981 wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO, 982 AP_STA_CONNECTED "%s%s", 983 buf, ip_addr); 984 985 sta->flags |= WLAN_STA_AUTHORIZED; 986 } else { 987 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED "%s", buf); 988 989 if (hapd->msg_ctx_parent && 990 hapd->msg_ctx_parent != hapd->msg_ctx) 991 wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO, 992 AP_STA_DISCONNECTED "%s", buf); 993 994 sta->flags &= ~WLAN_STA_AUTHORIZED; 995 } 996 997 if (hapd->sta_authorized_cb) 998 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx, 999 sta->addr, authorized, dev_addr); 1000} 1001 1002 1003void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta, 1004 const u8 *addr, u16 reason) 1005{ 1006 1007 if (sta == NULL && addr) 1008 sta = ap_get_sta(hapd, addr); 1009 1010 if (addr) 1011 hostapd_drv_sta_deauth(hapd, addr, reason); 1012 1013 if (sta == NULL) 1014 return; 1015 ap_sta_set_authorized(hapd, sta, 0); 1016 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH); 1017 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0); 1018 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC); 1019 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout " 1020 "for " MACSTR " (%d seconds - " 1021 "AP_MAX_INACTIVITY_AFTER_DEAUTH)", 1022 __func__, MAC2STR(sta->addr), 1023 AP_MAX_INACTIVITY_AFTER_DEAUTH); 1024 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 1025 eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0, 1026 ap_handle_timer, hapd, sta); 1027 sta->timeout_next = STA_REMOVE; 1028 1029 sta->deauth_reason = reason; 1030 sta->flags |= WLAN_STA_PENDING_DEAUTH_CB; 1031 eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta); 1032 eloop_register_timeout(hapd->iface->drv_flags & 1033 WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0, 1034 ap_sta_deauth_cb_timeout, hapd, sta); 1035} 1036 1037 1038void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta) 1039{ 1040 if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) { 1041 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame"); 1042 return; 1043 } 1044 sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB; 1045 eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta); 1046 ap_sta_deauth_cb_timeout(hapd, sta); 1047} 1048 1049 1050void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta) 1051{ 1052 if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) { 1053 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame"); 1054 return; 1055 } 1056 sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB; 1057 eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta); 1058 ap_sta_disassoc_cb_timeout(hapd, sta); 1059} 1060 1061 1062int ap_sta_flags_txt(u32 flags, char *buf, size_t buflen) 1063{ 1064 int res; 1065 1066 buf[0] = '\0'; 1067 res = os_snprintf(buf, buflen, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", 1068 (flags & WLAN_STA_AUTH ? "[AUTH]" : ""), 1069 (flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""), 1070 (flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" : ""), 1071 (flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" : 1072 ""), 1073 (flags & WLAN_STA_SHORT_PREAMBLE ? 1074 "[SHORT_PREAMBLE]" : ""), 1075 (flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""), 1076 (flags & WLAN_STA_WMM ? "[WMM]" : ""), 1077 (flags & WLAN_STA_MFP ? "[MFP]" : ""), 1078 (flags & WLAN_STA_WPS ? "[WPS]" : ""), 1079 (flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""), 1080 (flags & WLAN_STA_WDS ? "[WDS]" : ""), 1081 (flags & WLAN_STA_NONERP ? "[NonERP]" : ""), 1082 (flags & WLAN_STA_WPS2 ? "[WPS2]" : ""), 1083 (flags & WLAN_STA_GAS ? "[GAS]" : ""), 1084 (flags & WLAN_STA_VHT ? "[VHT]" : ""), 1085 (flags & WLAN_STA_WNM_SLEEP_MODE ? 1086 "[WNM_SLEEP_MODE]" : "")); 1087 1088 return res; 1089} 1090