2 * WPA Supplicant - Driver event processing
3 * Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
18 #include "eapol_supp/eapol_supp_sm.h"
19 #include "rsn_supp/wpa.h"
22 #include "l2_packet/l2_packet.h"
23 #include "wpa_supplicant_i.h"
25 #include "pcsc_funcs.h"
26 #include "rsn_supp/preauth.h"
27 #include "rsn_supp/pmksa_cache.h"
28 #include "common/wpa_ctrl.h"
29 #include "eap_peer/eap.h"
30 #include "ap/hostapd.h"
32 #include "common/ieee802_11_defs.h"
33 #include "blacklist.h"
34 #include "wpas_glue.h"
35 #include "wps_supplicant.h"
45 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
47 struct wpa_ssid *ssid, *old_ssid;
49 if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
52 wpa_printf(MSG_DEBUG, "Select network based on association "
54 ssid = wpa_supplicant_get_ssid(wpa_s);
56 wpa_printf(MSG_INFO, "No network configuration found for the "
62 wpa_printf(MSG_DEBUG, "Selected network is disabled");
66 wpa_printf(MSG_DEBUG, "Network configuration found for the current "
68 if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
69 WPA_KEY_MGMT_WPA_NONE |
70 WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
71 WPA_KEY_MGMT_PSK_SHA256 |
72 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
74 size_t wpa_ie_len = sizeof(wpa_ie);
75 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
78 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
81 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
82 eapol_sm_invalidate_cached_session(wpa_s->eapol);
83 old_ssid = wpa_s->current_ssid;
84 wpa_s->current_ssid = ssid;
85 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
86 wpa_supplicant_initiate_eapol(wpa_s);
87 if (old_ssid != wpa_s->current_ssid)
88 wpas_notify_network_changed(wpa_s);
94 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
97 struct wpa_supplicant *wpa_s = eloop_ctx;
99 if (wpa_s->countermeasures) {
100 wpa_s->countermeasures = 0;
101 wpa_drv_set_countermeasures(wpa_s, 0);
102 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
103 wpa_supplicant_req_scan(wpa_s, 0, 0);
108 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
112 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
113 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
114 os_memset(wpa_s->bssid, 0, ETH_ALEN);
115 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
116 wpa_s->current_bss = NULL;
118 wpas_notify_bssid_changed(wpa_s);
120 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
121 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
122 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
123 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
124 wpa_s->ap_ies_from_associnfo = 0;
128 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
130 struct wpa_ie_data ie;
134 if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
138 for (i = 0; i < ie.num_pmkid; i++) {
139 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
140 ie.pmkid + i * PMKID_LEN,
142 if (pmksa_set == 0) {
143 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
148 wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA "
149 "cache", pmksa_set == 0 ? "" : "not ");
153 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
154 union wpa_event_data *data)
157 wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event");
160 wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
161 " index=%d preauth=%d",
162 MAC2STR(data->pmkid_candidate.bssid),
163 data->pmkid_candidate.index,
164 data->pmkid_candidate.preauth);
166 pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
167 data->pmkid_candidate.index,
168 data->pmkid_candidate.preauth);
172 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
174 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
175 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
178 #ifdef IEEE8021X_EAPOL
179 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
180 wpa_s->current_ssid &&
181 !(wpa_s->current_ssid->eapol_flags &
182 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
183 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
184 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
185 * plaintext or static WEP keys). */
188 #endif /* IEEE8021X_EAPOL */
195 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
196 * @wpa_s: pointer to wpa_supplicant data
197 * @ssid: Configuration data for the network
198 * Returns: 0 on success, -1 on failure
200 * This function is called when starting authentication with a network that is
201 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
203 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
204 struct wpa_ssid *ssid)
206 #ifdef IEEE8021X_EAPOL
207 int aka = 0, sim = 0, type;
209 if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
212 if (ssid->eap.eap_methods == NULL) {
216 struct eap_method_type *eap = ssid->eap.eap_methods;
217 while (eap->vendor != EAP_VENDOR_IETF ||
218 eap->method != EAP_TYPE_NONE) {
219 if (eap->vendor == EAP_VENDOR_IETF) {
220 if (eap->method == EAP_TYPE_SIM)
222 else if (eap->method == EAP_TYPE_AKA)
229 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
231 if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
235 wpa_printf(MSG_DEBUG, "Selected network is configured to use "
236 "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
240 wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM "
241 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
243 type = SCARD_TRY_BOTH;
245 type = SCARD_USIM_ONLY;
247 type = SCARD_GSM_SIM_ONLY;
249 wpa_s->scard = scard_init(type);
250 if (wpa_s->scard == NULL) {
251 wpa_printf(MSG_WARNING, "Failed to initialize SIM "
255 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
256 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
257 #endif /* IEEE8021X_EAPOL */
263 #ifndef CONFIG_NO_SCAN_PROCESSING
264 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
265 struct wpa_ssid *ssid)
269 if (ssid->mixed_cell)
273 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
275 #endif /* CONFIG_WPS */
277 for (i = 0; i < NUM_WEP_KEYS; i++) {
278 if (ssid->wep_key_len[i]) {
283 #ifdef IEEE8021X_EAPOL
284 if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
285 ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
286 EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
288 #endif /* IEEE8021X_EAPOL */
290 if (bss->caps & IEEE80211_CAP_PRIVACY)
296 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
297 struct wpa_ssid *ssid,
298 struct wpa_scan_res *bss)
300 struct wpa_ie_data ie;
302 const u8 *rsn_ie, *wpa_ie;
305 ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
309 rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
310 while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
313 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
314 wpa_printf(MSG_DEBUG, " skip RSN IE - parse failed");
317 if (!(ie.proto & ssid->proto)) {
318 wpa_printf(MSG_DEBUG, " skip RSN IE - proto "
323 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
324 wpa_printf(MSG_DEBUG, " skip RSN IE - PTK cipher "
329 if (!(ie.group_cipher & ssid->group_cipher)) {
330 wpa_printf(MSG_DEBUG, " skip RSN IE - GTK cipher "
335 if (!(ie.key_mgmt & ssid->key_mgmt)) {
336 wpa_printf(MSG_DEBUG, " skip RSN IE - key mgmt "
341 #ifdef CONFIG_IEEE80211W
342 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
343 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
344 wpa_printf(MSG_DEBUG, " skip RSN IE - no mgmt frame "
348 #endif /* CONFIG_IEEE80211W */
350 wpa_printf(MSG_DEBUG, " selected based on RSN IE");
354 wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
355 while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
358 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
359 wpa_printf(MSG_DEBUG, " skip WPA IE - parse failed");
362 if (!(ie.proto & ssid->proto)) {
363 wpa_printf(MSG_DEBUG, " skip WPA IE - proto "
368 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
369 wpa_printf(MSG_DEBUG, " skip WPA IE - PTK cipher "
374 if (!(ie.group_cipher & ssid->group_cipher)) {
375 wpa_printf(MSG_DEBUG, " skip WPA IE - GTK cipher "
380 if (!(ie.key_mgmt & ssid->key_mgmt)) {
381 wpa_printf(MSG_DEBUG, " skip WPA IE - key mgmt "
386 wpa_printf(MSG_DEBUG, " selected based on WPA IE");
390 if (proto_match == 0)
391 wpa_printf(MSG_DEBUG, " skip - no WPA/RSN proto match");
397 static int freq_allowed(int *freqs, int freq)
404 for (i = 0; freqs[i]; i++)
405 if (freqs[i] == freq)
411 static struct wpa_bss *
412 wpa_supplicant_select_bss_wpa(struct wpa_supplicant *wpa_s,
413 struct wpa_scan_results *scan_res,
414 struct wpa_ssid *group,
415 struct wpa_ssid **selected_ssid)
417 struct wpa_ssid *ssid;
418 struct wpa_scan_res *bss;
420 struct wpa_blacklist *e;
423 wpa_printf(MSG_DEBUG, "Try to find WPA-enabled AP");
424 for (i = 0; i < scan_res->num; i++) {
426 u8 wpa_ie_len, rsn_ie_len, ssid_len;
427 bss = scan_res->res[i];
429 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
430 ssid_ = ie ? ie + 2 : (u8 *) "";
431 ssid_len = ie ? ie[1] : 0;
433 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
434 wpa_ie_len = ie ? ie[1] : 0;
436 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
437 rsn_ie_len = ie ? ie[1] : 0;
439 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
440 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
441 (int) i, MAC2STR(bss->bssid),
442 wpa_ssid_txt(ssid_, ssid_len),
443 wpa_ie_len, rsn_ie_len, bss->caps);
445 e = wpa_blacklist_get(wpa_s, bss->bssid);
446 if (e && e->count > 1) {
447 wpa_printf(MSG_DEBUG, " skip - blacklisted");
452 wpa_printf(MSG_DEBUG, " skip - SSID not known");
456 if (wpa_ie_len == 0 && rsn_ie_len == 0) {
457 wpa_printf(MSG_DEBUG, " skip - no WPA/RSN IE");
461 for (ssid = group; ssid; ssid = ssid->pnext) {
464 if (ssid->disabled) {
465 wpa_printf(MSG_DEBUG, " skip - disabled");
470 if (ssid->ssid_len == 0 &&
471 wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
473 #endif /* CONFIG_WPS */
476 (ssid_len != ssid->ssid_len ||
477 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
478 wpa_printf(MSG_DEBUG, " skip - "
483 if (ssid->bssid_set &&
484 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
486 wpa_printf(MSG_DEBUG, " skip - "
491 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
494 if (!freq_allowed(ssid->freq_list, bss->freq)) {
495 wpa_printf(MSG_DEBUG, " skip - "
496 "frequency not allowed");
500 wpa_printf(MSG_DEBUG, " selected WPA AP "
503 wpa_ssid_txt(ssid_, ssid_len));
504 *selected_ssid = ssid;
505 return wpa_bss_get(wpa_s, bss->bssid, ssid_, ssid_len);
513 static struct wpa_bss *
514 wpa_supplicant_select_bss_non_wpa(struct wpa_supplicant *wpa_s,
515 struct wpa_scan_results *scan_res,
516 struct wpa_ssid *group,
517 struct wpa_ssid **selected_ssid)
519 struct wpa_ssid *ssid;
520 struct wpa_scan_res *bss;
522 struct wpa_blacklist *e;
525 wpa_printf(MSG_DEBUG, "Try to find non-WPA AP");
526 for (i = 0; i < scan_res->num; i++) {
528 u8 wpa_ie_len, rsn_ie_len, ssid_len;
529 bss = scan_res->res[i];
531 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
532 ssid_ = ie ? ie + 2 : (u8 *) "";
533 ssid_len = ie ? ie[1] : 0;
535 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
536 wpa_ie_len = ie ? ie[1] : 0;
538 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
539 rsn_ie_len = ie ? ie[1] : 0;
541 wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
542 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
543 (int) i, MAC2STR(bss->bssid),
544 wpa_ssid_txt(ssid_, ssid_len),
545 wpa_ie_len, rsn_ie_len, bss->caps);
547 e = wpa_blacklist_get(wpa_s, bss->bssid);
548 if (e && e->count > 1) {
549 wpa_printf(MSG_DEBUG, " skip - blacklisted");
554 wpa_printf(MSG_DEBUG, " skip - SSID not known");
558 for (ssid = group; ssid; ssid = ssid->pnext) {
559 int check_ssid = ssid->ssid_len != 0;
561 if (ssid->disabled) {
562 wpa_printf(MSG_DEBUG, " skip - disabled");
567 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
568 /* Only allow wildcard SSID match if an AP
569 * advertises active WPS operation that matches
572 if (ssid->ssid_len == 0 &&
573 wpas_wps_ssid_wildcard_ok(wpa_s, ssid,
577 #endif /* CONFIG_WPS */
580 (ssid_len != ssid->ssid_len ||
581 os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
582 wpa_printf(MSG_DEBUG, " skip - "
587 if (ssid->bssid_set &&
588 os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0)
590 wpa_printf(MSG_DEBUG, " skip - "
595 if (!(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
596 !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
597 !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA))
599 wpa_printf(MSG_DEBUG, " skip - "
600 "non-WPA network not allowed");
604 if ((ssid->key_mgmt &
605 (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
606 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK |
607 WPA_KEY_MGMT_IEEE8021X_SHA256 |
608 WPA_KEY_MGMT_PSK_SHA256)) &&
609 (wpa_ie_len != 0 || rsn_ie_len != 0)) {
610 wpa_printf(MSG_DEBUG, " skip - "
615 if (!wpa_supplicant_match_privacy(bss, ssid)) {
616 wpa_printf(MSG_DEBUG, " skip - "
621 if (bss->caps & IEEE80211_CAP_IBSS) {
622 wpa_printf(MSG_DEBUG, " skip - "
623 "IBSS (adhoc) network");
627 if (!freq_allowed(ssid->freq_list, bss->freq)) {
628 wpa_printf(MSG_DEBUG, " skip - "
629 "frequency not allowed");
633 wpa_printf(MSG_DEBUG, " selected non-WPA AP "
636 wpa_ssid_txt(ssid_, ssid_len));
637 *selected_ssid = ssid;
638 return wpa_bss_get(wpa_s, bss->bssid, ssid_, ssid_len);
646 static struct wpa_bss *
647 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
648 struct wpa_scan_results *scan_res,
649 struct wpa_ssid *group,
650 struct wpa_ssid **selected_ssid)
652 struct wpa_bss *selected;
654 wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d",
657 /* First, try to find WPA-enabled AP */
658 selected = wpa_supplicant_select_bss_wpa(wpa_s, scan_res, group,
663 /* If no WPA-enabled AP found, try to find non-WPA AP, if configuration
665 return wpa_supplicant_select_bss_non_wpa(wpa_s, scan_res, group,
670 static struct wpa_bss *
671 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
672 struct wpa_scan_results *scan_res,
673 struct wpa_ssid **selected_ssid)
675 struct wpa_bss *selected = NULL;
678 while (selected == NULL) {
679 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
680 selected = wpa_supplicant_select_bss(
681 wpa_s, scan_res, wpa_s->conf->pssid[prio],
687 if (selected == NULL && wpa_s->blacklist) {
688 wpa_printf(MSG_DEBUG, "No APs found - clear blacklist "
690 wpa_blacklist_clear(wpa_s);
691 wpa_s->blacklist_cleared++;
692 } else if (selected == NULL)
700 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
703 if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1) {
705 * Quick recovery if the initial scan results were not
706 * complete when fetched before the first scan request.
708 wpa_s->scan_res_tried++;
710 } else if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
712 * No networks are enabled; short-circuit request so
713 * we don't wait timeout seconds before transitioning
716 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
719 wpa_supplicant_req_scan(wpa_s, timeout, 0);
723 static void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
724 struct wpa_bss *selected,
725 struct wpa_ssid *ssid)
727 if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
728 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
729 "PBC session overlap");
730 wpa_supplicant_req_new_scan(wpa_s, 10);
735 * Do not trigger new association unless the BSSID has changed or if
736 * reassociation is requested. If we are in process of associating with
737 * the selected BSSID, do not trigger new attempt.
739 if (wpa_s->reassociate ||
740 (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
741 (wpa_s->wpa_state != WPA_ASSOCIATING ||
742 os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
744 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
745 wpa_supplicant_req_new_scan(wpa_s, 10);
748 wpa_supplicant_associate(wpa_s, selected, ssid);
750 wpa_printf(MSG_DEBUG, "Already associated with the selected "
756 static struct wpa_ssid *
757 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
760 struct wpa_ssid *ssid;
762 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
763 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
767 if (ssid->mode == IEEE80211_MODE_IBSS ||
768 ssid->mode == IEEE80211_MODE_AP)
776 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
777 * on BSS added and BSS changed events */
778 static void wpa_supplicant_rsn_preauth_scan_results(
779 struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
783 if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
786 for (i = scan_res->num - 1; i >= 0; i--) {
787 const u8 *ssid, *rsn;
788 struct wpa_scan_res *r;
790 r = scan_res->res[i];
792 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
796 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
800 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
806 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
807 struct wpa_bss *selected,
808 struct wpa_ssid *ssid,
809 struct wpa_scan_results *scan_res)
812 struct wpa_scan_res *current_bss = NULL;
815 if (wpa_s->reassociate)
816 return 1; /* explicit request to reassociate */
817 if (wpa_s->wpa_state < WPA_ASSOCIATED)
818 return 1; /* we are not associated; continue */
819 if (wpa_s->current_ssid == NULL)
820 return 1; /* unknown current SSID */
821 if (wpa_s->current_ssid != ssid)
822 return 1; /* different network block */
824 for (i = 0; i < scan_res->num; i++) {
825 struct wpa_scan_res *res = scan_res->res[i];
827 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
830 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
833 if (ie[1] != wpa_s->current_ssid->ssid_len ||
834 os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
841 return 1; /* current BSS not seen in scan results */
843 wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation");
844 wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
845 MAC2STR(current_bss->bssid), current_bss->level);
846 wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
847 MAC2STR(selected->bssid), selected->level);
849 if (wpa_s->current_ssid->bssid_set &&
850 os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
852 wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has "
858 if (current_bss->level < 0) {
859 if (current_bss->level < -85)
861 else if (current_bss->level < -80)
863 else if (current_bss->level < -75)
865 else if (current_bss->level < -70)
870 if (abs(current_bss->level - selected->level) < min_diff) {
871 wpa_printf(MSG_DEBUG, "Skip roam - too small difference in "
880 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
881 union wpa_event_data *data)
883 struct wpa_bss *selected;
884 struct wpa_ssid *ssid = NULL;
885 struct wpa_scan_results *scan_res;
887 wpa_supplicant_notify_scanning(wpa_s, 0);
889 scan_res = wpa_supplicant_get_scan_results(wpa_s,
890 data ? &data->scan_info :
892 if (scan_res == NULL) {
893 if (wpa_s->conf->ap_scan == 2)
895 wpa_printf(MSG_DEBUG, "Failed to get scan results - try "
897 wpa_supplicant_req_new_scan(wpa_s, 1);
902 * Don't post the results if this was the initial cached
903 * and there were no results.
905 if (wpa_s->scan_res_tried == 1 && wpa_s->conf->ap_scan == 1 &&
906 scan_res->num == 0) {
907 wpa_msg(wpa_s, MSG_DEBUG, "Cached scan results are "
908 "empty - not posting");
910 wpa_printf(MSG_DEBUG, "New scan results available");
911 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
912 wpas_notify_scan_results(wpa_s);
915 wpas_notify_scan_done(wpa_s, 1);
917 if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
918 wpa_scan_results_free(scan_res);
922 if (wpa_s->disconnected) {
923 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
924 wpa_scan_results_free(scan_res);
928 if (bgscan_notify_scan(wpa_s) == 1) {
929 wpa_scan_results_free(scan_res);
933 wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
935 selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
939 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
941 wpa_scan_results_free(scan_res);
944 wpa_supplicant_connect(wpa_s, selected, ssid);
946 wpa_scan_results_free(scan_res);
947 wpa_printf(MSG_DEBUG, "No suitable network found");
948 ssid = wpa_supplicant_pick_new_network(wpa_s);
950 wpa_printf(MSG_DEBUG, "Setup a new network");
951 wpa_supplicant_associate(wpa_s, NULL, ssid);
953 wpa_supplicant_req_new_scan(wpa_s, 5);
956 #endif /* CONFIG_NO_SCAN_PROCESSING */
959 #ifdef CONFIG_IEEE80211R
960 static void wpa_assoc_set_ft_params(struct wpa_supplicant *wpa_s,
961 const u8 *ftie, const u8 *mdie)
963 const u8 *mobility_domain = NULL;
964 const u8 *r0kh_id = NULL;
965 size_t r0kh_id_len = 0;
966 const u8 *r1kh_id = NULL;
967 struct rsn_ftie *hdr;
970 if (mdie == NULL || ftie == NULL)
973 if (mdie[1] >= MOBILITY_DOMAIN_ID_LEN) {
974 mobility_domain = mdie + 2;
976 wpa_s->sme.ft_used = 1;
977 os_memcpy(wpa_s->sme.mobility_domain, mobility_domain, 2);
978 #endif /* CONFIG_SME */
980 if (ftie[1] >= sizeof(struct rsn_ftie)) {
981 end = ftie + 2 + ftie[1];
982 hdr = (struct rsn_ftie *) (ftie + 2);
983 pos = (const u8 *) (hdr + 1);
984 while (pos + 1 < end) {
985 if (pos + 2 + pos[1] > end)
987 if (pos[0] == FTIE_SUBELEM_R1KH_ID &&
988 pos[1] == FT_R1KH_ID_LEN)
990 else if (pos[0] == FTIE_SUBELEM_R0KH_ID &&
991 pos[1] >= 1 && pos[1] <= FT_R0KH_ID_MAX_LEN) {
993 r0kh_id_len = pos[1];
998 wpa_sm_set_ft_params(wpa_s->wpa, mobility_domain, r0kh_id,
999 r0kh_id_len, r1kh_id);
1001 #endif /* CONFIG_IEEE80211R */
1003 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1004 union wpa_event_data *data)
1006 int l, len, found = 0, wpa_found, rsn_found;
1008 #ifdef CONFIG_IEEE80211R
1009 const u8 *mdie = NULL, *ftie = NULL;
1010 #endif /* CONFIG_IEEE80211R */
1012 wpa_printf(MSG_DEBUG, "Association info event");
1013 if (data->assoc_info.req_ies)
1014 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1015 data->assoc_info.req_ies_len);
1016 if (data->assoc_info.resp_ies)
1017 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1018 data->assoc_info.resp_ies_len);
1019 if (data->assoc_info.beacon_ies)
1020 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1021 data->assoc_info.beacon_ies,
1022 data->assoc_info.beacon_ies_len);
1023 if (data->assoc_info.freq)
1024 wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq);
1026 p = data->assoc_info.req_ies;
1027 l = data->assoc_info.req_ies_len;
1029 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1030 while (p && l >= 2) {
1033 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1037 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1038 (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1039 (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1040 if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1043 wpa_find_assoc_pmkid(wpa_s);
1049 if (!found && data->assoc_info.req_ies)
1050 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1052 #ifdef CONFIG_IEEE80211R
1054 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1056 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1057 wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1058 data->assoc_info.resp_ies,
1059 data->assoc_info.resp_ies_len,
1061 wpa_printf(MSG_DEBUG, "FT: Validation of "
1062 "Reassociation Response failed");
1063 wpa_supplicant_deauthenticate(
1064 wpa_s, WLAN_REASON_INVALID_IE);
1068 #endif /* CONFIG_SME */
1070 p = data->assoc_info.resp_ies;
1071 l = data->assoc_info.resp_ies_len;
1073 /* Go through the IEs and make a copy of the FT/MD IE, if present. */
1074 while (p && l >= 2) {
1077 wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1081 if (p[0] == WLAN_EID_FAST_BSS_TRANSITION)
1083 else if (p[0] == WLAN_EID_MOBILITY_DOMAIN)
1089 wpa_assoc_set_ft_params(wpa_s, ftie, mdie);
1090 #endif /* CONFIG_IEEE80211R */
1092 /* WPA/RSN IE from Beacon/ProbeResp */
1093 p = data->assoc_info.beacon_ies;
1094 l = data->assoc_info.beacon_ies_len;
1096 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1098 wpa_found = rsn_found = 0;
1099 while (p && l >= 2) {
1102 wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1107 p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1108 os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1110 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1114 p[0] == WLAN_EID_RSN && p[1] >= 2) {
1116 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1123 if (!wpa_found && data->assoc_info.beacon_ies)
1124 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1125 if (!rsn_found && data->assoc_info.beacon_ies)
1126 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1127 if (wpa_found || rsn_found)
1128 wpa_s->ap_ies_from_associnfo = 1;
1130 wpa_s->assoc_freq = data->assoc_info.freq;
1136 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1137 union wpa_event_data *data)
1142 struct wpa_driver_capa capa;
1145 if (wpa_s->ap_iface) {
1146 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1147 data->assoc_info.addr,
1148 data->assoc_info.req_ies,
1149 data->assoc_info.req_ies_len);
1152 #endif /* CONFIG_AP */
1154 ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1155 if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1158 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1159 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1160 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1161 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1162 (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1163 os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1164 wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1165 MACSTR, MAC2STR(bssid));
1166 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1167 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1168 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1170 wpas_notify_bssid_changed(wpa_s);
1172 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1173 wpa_clear_keys(wpa_s, bssid);
1175 if (wpa_supplicant_select_config(wpa_s) < 0) {
1176 wpa_supplicant_disassociate(
1177 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1180 if (wpa_s->current_ssid) {
1181 struct wpa_bss *bss = NULL;
1182 struct wpa_ssid *ssid = wpa_s->current_ssid;
1183 if (ssid->ssid_len > 0)
1184 bss = wpa_bss_get(wpa_s, bssid,
1185 ssid->ssid, ssid->ssid_len);
1187 bss = wpa_bss_get_bssid(wpa_s, bssid);
1189 wpa_s->current_bss = bss;
1194 os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1195 wpa_s->sme.prev_bssid_set = 1;
1196 #endif /* CONFIG_SME */
1198 wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1199 if (wpa_s->current_ssid) {
1200 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1201 * initialized before association, but for other modes,
1202 * initialize PC/SC here, if the current configuration needs
1203 * smartcard or SIM/USIM. */
1204 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1206 wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1207 l2_packet_notify_auth_start(wpa_s->l2);
1210 * Set portEnabled first to FALSE in order to get EAP state machine out
1211 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1212 * state machine may transit to AUTHENTICATING state based on obsolete
1213 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1214 * AUTHENTICATED without ever giving chance to EAP state machine to
1217 if (!ft_completed) {
1218 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1219 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1221 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1222 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1223 /* 802.1X::portControl = Auto */
1224 eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1225 wpa_s->eapol_received = 0;
1226 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1227 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1228 (wpa_s->current_ssid &&
1229 wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1230 wpa_supplicant_cancel_auth_timeout(wpa_s);
1231 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1232 } else if (!ft_completed) {
1233 /* Timeout for receiving the first EAPOL packet */
1234 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1236 wpa_supplicant_cancel_scan(wpa_s);
1238 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1239 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1241 * We are done; the driver will take care of RSN 4-way
1244 wpa_supplicant_cancel_auth_timeout(wpa_s);
1245 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1246 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1247 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1250 if (wpa_s->pending_eapol_rx) {
1251 struct os_time now, age;
1253 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1254 if (age.sec == 0 && age.usec < 100000 &&
1255 os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1257 wpa_printf(MSG_DEBUG, "Process pending EAPOL frame "
1258 "that was received just before association "
1260 wpa_supplicant_rx_eapol(
1261 wpa_s, wpa_s->pending_eapol_rx_src,
1262 wpabuf_head(wpa_s->pending_eapol_rx),
1263 wpabuf_len(wpa_s->pending_eapol_rx));
1265 wpabuf_free(wpa_s->pending_eapol_rx);
1266 wpa_s->pending_eapol_rx = NULL;
1269 #ifdef CONFIG_BGSCAN
1270 if (wpa_s->current_ssid != wpa_s->bgscan_ssid) {
1271 bgscan_deinit(wpa_s);
1272 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
1273 if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
1274 wpa_printf(MSG_DEBUG, "Failed to initialize "
1277 * Live without bgscan; it is only used as a
1278 * roaming optimization, so the initial
1279 * connection is not affected.
1282 wpa_s->bgscan_ssid = wpa_s->current_ssid;
1284 wpa_s->bgscan_ssid = NULL;
1286 #endif /* CONFIG_BGSCAN */
1288 if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1289 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1290 wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1291 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1292 /* Set static WEP keys again */
1293 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1298 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s)
1303 u8 prev_pending_bssid[ETH_ALEN];
1305 authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1306 os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1307 #endif /* CONFIG_SME */
1309 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1311 * At least Host AP driver and a Prism3 card seemed to be
1312 * generating streams of disconnected events when configuring
1313 * IBSS for WPA-None. Ignore them for now.
1315 wpa_printf(MSG_DEBUG, "Disconnect event - ignore in "
1316 "IBSS/WPA-None mode");
1320 if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1321 wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1322 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1323 "pre-shared key may be incorrect");
1325 if (wpa_s->wpa_state >= WPA_ASSOCIATED)
1326 wpa_supplicant_req_scan(wpa_s, 0, 100000);
1327 bssid = wpa_s->bssid;
1328 if (is_zero_ether_addr(bssid))
1329 bssid = wpa_s->pending_bssid;
1330 wpa_blacklist_add(wpa_s, bssid);
1331 wpa_sm_notify_disassoc(wpa_s->wpa);
1332 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "- Disconnect event - "
1334 if (wpa_supplicant_dynamic_keys(wpa_s)) {
1335 wpa_s->keys_cleared = 0;
1336 wpa_clear_keys(wpa_s, wpa_s->bssid);
1338 wpa_supplicant_mark_disassoc(wpa_s);
1339 bgscan_deinit(wpa_s);
1341 if (authenticating &&
1342 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
1344 * mac80211-workaround to force deauth on failed auth cmd,
1345 * requires us to remain in authenticating state to allow the
1346 * second authentication attempt to be continued properly.
1348 wpa_printf(MSG_DEBUG, "SME: Allow pending authentication to "
1349 "proceed after disconnection event");
1350 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1351 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1353 #endif /* CONFIG_SME */
1357 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1358 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1361 struct wpa_supplicant *wpa_s = eloop_ctx;
1363 if (!wpa_s->pending_mic_error_report)
1366 wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report");
1367 wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1368 wpa_s->pending_mic_error_report = 0;
1370 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1374 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1375 union wpa_event_data *data)
1380 wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1381 pairwise = (data && data->michael_mic_failure.unicast);
1383 if ((wpa_s->last_michael_mic_error &&
1384 t.sec - wpa_s->last_michael_mic_error <= 60) ||
1385 wpa_s->pending_mic_error_report) {
1386 if (wpa_s->pending_mic_error_report) {
1388 * Send the pending MIC error report immediately since
1389 * we are going to start countermeasures and AP better
1392 wpa_sm_key_request(wpa_s->wpa, 1,
1393 wpa_s->pending_mic_error_pairwise);
1396 /* Send the new MIC error report immediately since we are going
1397 * to start countermeasures and AP better do the same.
1399 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1401 /* initialize countermeasures */
1402 wpa_s->countermeasures = 1;
1403 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1406 * Need to wait for completion of request frame. We do not get
1407 * any callback for the message completion, so just wait a
1408 * short while and hope for the best. */
1411 wpa_drv_set_countermeasures(wpa_s, 1);
1412 wpa_supplicant_deauthenticate(wpa_s,
1413 WLAN_REASON_MICHAEL_MIC_FAILURE);
1414 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1416 eloop_register_timeout(60, 0,
1417 wpa_supplicant_stop_countermeasures,
1419 /* TODO: mark the AP rejected for 60 second. STA is
1420 * allowed to associate with another AP.. */
1422 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1423 if (wpa_s->mic_errors_seen) {
1425 * Reduce the effectiveness of Michael MIC error
1426 * reports as a means for attacking against TKIP if
1427 * more than one MIC failure is noticed with the same
1428 * PTK. We delay the transmission of the reports by a
1429 * random time between 0 and 60 seconds in order to
1430 * force the attacker wait 60 seconds before getting
1431 * the information on whether a frame resulted in a MIC
1437 if (os_get_random(rval, sizeof(rval)) < 0)
1438 sec = os_random() % 60;
1440 sec = WPA_GET_BE32(rval) % 60;
1441 wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d "
1443 wpa_s->pending_mic_error_report = 1;
1444 wpa_s->pending_mic_error_pairwise = pairwise;
1445 eloop_cancel_timeout(
1446 wpa_supplicant_delayed_mic_error_report,
1448 eloop_register_timeout(
1449 sec, os_random() % 1000000,
1450 wpa_supplicant_delayed_mic_error_report,
1453 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1455 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1456 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1457 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1459 wpa_s->last_michael_mic_error = t.sec;
1460 wpa_s->mic_errors_seen++;
1464 #ifdef CONFIG_TERMINATE_ONLASTIF
1465 static int any_interfaces(struct wpa_supplicant *head)
1467 struct wpa_supplicant *wpa_s;
1469 for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1470 if (!wpa_s->interface_removed)
1474 #endif /* CONFIG_TERMINATE_ONLASTIF */
1478 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1479 union wpa_event_data *data)
1481 if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1484 switch (data->interface_status.ievent) {
1485 case EVENT_INTERFACE_ADDED:
1486 if (!wpa_s->interface_removed)
1488 wpa_s->interface_removed = 0;
1489 wpa_printf(MSG_DEBUG, "Configured interface was added.");
1490 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1491 wpa_printf(MSG_INFO, "Failed to initialize the driver "
1492 "after interface was added.");
1495 case EVENT_INTERFACE_REMOVED:
1496 wpa_printf(MSG_DEBUG, "Configured interface was removed.");
1497 wpa_s->interface_removed = 1;
1498 wpa_supplicant_mark_disassoc(wpa_s);
1499 l2_packet_deinit(wpa_s->l2);
1501 #ifdef CONFIG_TERMINATE_ONLASTIF
1502 /* check if last interface */
1503 if (!any_interfaces(wpa_s->global->ifaces))
1505 #endif /* CONFIG_TERMINATE_ONLASTIF */
1511 #ifdef CONFIG_PEERKEY
1513 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1514 union wpa_event_data *data)
1518 wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1520 #endif /* CONFIG_PEERKEY */
1523 #ifdef CONFIG_IEEE80211R
1525 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1526 union wpa_event_data *data)
1531 if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1532 data->ft_ies.ies_len,
1533 data->ft_ies.ft_action,
1534 data->ft_ies.target_ap,
1535 data->ft_ies.ric_ies,
1536 data->ft_ies.ric_ies_len) < 0) {
1537 /* TODO: prevent MLME/driver from trying to associate? */
1540 #endif /* CONFIG_IEEE80211R */
1543 #ifdef CONFIG_IBSS_RSN
1544 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1545 union wpa_event_data *data)
1549 ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1551 #endif /* CONFIG_IBSS_RSN */
1554 #ifdef CONFIG_IEEE80211R
1555 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1558 const u8 *sta_addr, *target_ap_addr;
1561 wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1562 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1563 return; /* only SME case supported for now */
1564 if (len < 1 + 2 * ETH_ALEN + 2)
1567 return; /* Only FT Action Response is supported for now */
1568 sta_addr = data + 1;
1569 target_ap_addr = data + 1 + ETH_ALEN;
1570 status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1571 wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR
1572 " TargetAP " MACSTR " status %u",
1573 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1575 if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1576 wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1577 " in FT Action Response", MAC2STR(sta_addr));
1582 wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates "
1583 "failure (status code %d)", status);
1584 /* TODO: report error to FT code(?) */
1588 if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1589 len - (1 + 2 * ETH_ALEN + 2), 1,
1590 target_ap_addr, NULL, 0) < 0)
1595 struct wpa_bss *bss;
1596 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1598 wpa_s->sme.freq = bss->freq;
1599 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1600 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1603 #endif /* CONFIG_SME */
1605 #endif /* CONFIG_IEEE80211R */
1608 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1609 union wpa_event_data *data)
1611 struct wpa_supplicant *wpa_s = ctx;
1615 sme_event_auth(wpa_s, data);
1618 wpa_supplicant_event_assoc(wpa_s, data);
1620 case EVENT_DISASSOC:
1621 wpa_printf(MSG_DEBUG, "Disassociation notification");
1623 if (wpa_s->ap_iface && data) {
1624 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1625 data->disassoc_info.addr);
1628 #endif /* CONFIG_AP */
1629 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1630 sme_event_disassoc(wpa_s, data);
1633 if (event == EVENT_DEAUTH)
1634 wpa_printf(MSG_DEBUG, "Deauthentication notification");
1636 if (wpa_s->ap_iface && data) {
1637 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1638 data->deauth_info.addr);
1641 #endif /* CONFIG_AP */
1642 wpa_supplicant_event_disassoc(wpa_s);
1644 case EVENT_MICHAEL_MIC_FAILURE:
1645 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1647 #ifndef CONFIG_NO_SCAN_PROCESSING
1648 case EVENT_SCAN_RESULTS:
1649 wpa_supplicant_event_scan_results(wpa_s, data);
1651 #endif /* CONFIG_NO_SCAN_PROCESSING */
1652 case EVENT_ASSOCINFO:
1653 wpa_supplicant_event_associnfo(wpa_s, data);
1655 case EVENT_INTERFACE_STATUS:
1656 wpa_supplicant_event_interface_status(wpa_s, data);
1658 case EVENT_PMKID_CANDIDATE:
1659 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1661 #ifdef CONFIG_PEERKEY
1662 case EVENT_STKSTART:
1663 wpa_supplicant_event_stkstart(wpa_s, data);
1665 #endif /* CONFIG_PEERKEY */
1666 #ifdef CONFIG_IEEE80211R
1667 case EVENT_FT_RESPONSE:
1668 wpa_supplicant_event_ft_response(wpa_s, data);
1670 #endif /* CONFIG_IEEE80211R */
1671 #ifdef CONFIG_IBSS_RSN
1672 case EVENT_IBSS_RSN_START:
1673 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1675 #endif /* CONFIG_IBSS_RSN */
1676 case EVENT_ASSOC_REJECT:
1677 sme_event_assoc_reject(wpa_s, data);
1679 case EVENT_AUTH_TIMED_OUT:
1680 sme_event_auth_timed_out(wpa_s, data);
1682 case EVENT_ASSOC_TIMED_OUT:
1683 sme_event_assoc_timed_out(wpa_s, data);
1686 case EVENT_TX_STATUS:
1687 if (wpa_s->ap_iface == NULL)
1689 switch (data->tx_status.type) {
1690 case WLAN_FC_TYPE_MGMT:
1691 ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1692 data->tx_status.data_len,
1693 data->tx_status.stype,
1694 data->tx_status.ack);
1696 case WLAN_FC_TYPE_DATA:
1697 ap_tx_status(wpa_s, data->tx_status.dst,
1698 data->tx_status.data,
1699 data->tx_status.data_len,
1700 data->tx_status.ack);
1704 case EVENT_RX_FROM_UNKNOWN:
1705 if (wpa_s->ap_iface == NULL)
1707 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1708 data->rx_from_unknown.len);
1711 if (wpa_s->ap_iface == NULL)
1713 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1715 #endif /* CONFIG_AP */
1716 case EVENT_RX_ACTION:
1717 wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR
1718 " Category=%u DataLen=%d freq=%d MHz",
1719 MAC2STR(data->rx_action.sa),
1720 data->rx_action.category, (int) data->rx_action.len,
1721 data->rx_action.freq);
1722 #ifdef CONFIG_IEEE80211R
1723 if (data->rx_action.category == WLAN_ACTION_FT) {
1724 ft_rx_action(wpa_s, data->rx_action.data,
1725 data->rx_action.len);
1728 #endif /* CONFIG_IEEE80211R */
1730 #ifdef CONFIG_CLIENT_MLME
1731 case EVENT_MLME_RX: {
1732 struct ieee80211_rx_status rx_status;
1733 os_memset(&rx_status, 0, sizeof(rx_status));
1734 rx_status.freq = data->mlme_rx.freq;
1735 rx_status.channel = data->mlme_rx.channel;
1736 rx_status.ssi = data->mlme_rx.ssi;
1737 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
1741 #endif /* CONFIG_CLIENT_MLME */
1742 case EVENT_EAPOL_RX:
1743 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
1744 data->eapol_rx.data,
1745 data->eapol_rx.data_len);
1747 case EVENT_SIGNAL_CHANGE:
1748 bgscan_notify_signal_change(
1749 wpa_s, data->signal_change.above_threshold);
1752 wpa_printf(MSG_INFO, "Unknown event %d", event);