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 void wpa_gui_amiga_inspect_scan_results(struct wpa_supplicant
*wpa_s
,
46 struct wpa_scan_results
*scan_res
);
49 static int wpa_supplicant_select_config(struct wpa_supplicant
*wpa_s
)
51 struct wpa_ssid
*ssid
, *old_ssid
;
53 if (wpa_s
->conf
->ap_scan
== 1 && wpa_s
->current_ssid
)
56 wpa_printf(MSG_DEBUG
, "Select network based on association "
58 ssid
= wpa_supplicant_get_ssid(wpa_s
);
60 wpa_printf(MSG_INFO
, "No network configuration found for the "
66 wpa_printf(MSG_DEBUG
, "Selected network is disabled");
70 wpa_printf(MSG_DEBUG
, "Network configuration found for the current "
72 if (ssid
->key_mgmt
& (WPA_KEY_MGMT_PSK
| WPA_KEY_MGMT_IEEE8021X
|
73 WPA_KEY_MGMT_WPA_NONE
|
74 WPA_KEY_MGMT_FT_PSK
| WPA_KEY_MGMT_FT_IEEE8021X
|
75 WPA_KEY_MGMT_PSK_SHA256
|
76 WPA_KEY_MGMT_IEEE8021X_SHA256
)) {
78 size_t wpa_ie_len
= sizeof(wpa_ie
);
79 wpa_supplicant_set_suites(wpa_s
, NULL
, ssid
,
82 wpa_supplicant_set_non_wpa_policy(wpa_s
, ssid
);
85 if (wpa_s
->current_ssid
&& wpa_s
->current_ssid
!= ssid
)
86 eapol_sm_invalidate_cached_session(wpa_s
->eapol
);
87 old_ssid
= wpa_s
->current_ssid
;
88 wpa_s
->current_ssid
= ssid
;
89 wpa_supplicant_rsn_supp_set_config(wpa_s
, wpa_s
->current_ssid
);
90 wpa_supplicant_initiate_eapol(wpa_s
);
91 if (old_ssid
!= wpa_s
->current_ssid
)
92 wpas_notify_network_changed(wpa_s
);
98 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx
,
101 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
103 if (wpa_s
->countermeasures
) {
104 wpa_s
->countermeasures
= 0;
105 wpa_drv_set_countermeasures(wpa_s
, 0);
106 wpa_msg(wpa_s
, MSG_INFO
, "WPA: TKIP countermeasures stopped");
107 wpa_supplicant_req_scan(wpa_s
, 0, 0);
112 void wpa_supplicant_mark_disassoc(struct wpa_supplicant
*wpa_s
)
116 wpa_supplicant_set_state(wpa_s
, WPA_DISCONNECTED
);
117 bssid_changed
= !is_zero_ether_addr(wpa_s
->bssid
);
118 os_memset(wpa_s
->bssid
, 0, ETH_ALEN
);
119 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
120 wpa_s
->current_bss
= NULL
;
122 wpas_notify_bssid_changed(wpa_s
);
124 eapol_sm_notify_portEnabled(wpa_s
->eapol
, FALSE
);
125 eapol_sm_notify_portValid(wpa_s
->eapol
, FALSE
);
126 if (wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
))
127 eapol_sm_notify_eap_success(wpa_s
->eapol
, FALSE
);
128 wpa_s
->ap_ies_from_associnfo
= 0;
132 static void wpa_find_assoc_pmkid(struct wpa_supplicant
*wpa_s
)
134 struct wpa_ie_data ie
;
138 if (wpa_sm_parse_own_wpa_ie(wpa_s
->wpa
, &ie
) < 0 ||
142 for (i
= 0; i
< ie
.num_pmkid
; i
++) {
143 pmksa_set
= pmksa_cache_set_current(wpa_s
->wpa
,
144 ie
.pmkid
+ i
* PMKID_LEN
,
146 if (pmksa_set
== 0) {
147 eapol_sm_notify_pmkid_attempt(wpa_s
->eapol
, 1);
152 wpa_printf(MSG_DEBUG
, "RSN: PMKID from assoc IE %sfound from PMKSA "
153 "cache", pmksa_set
== 0 ? "" : "not ");
157 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant
*wpa_s
,
158 union wpa_event_data
*data
)
161 wpa_printf(MSG_DEBUG
, "RSN: No data in PMKID candidate event");
164 wpa_printf(MSG_DEBUG
, "RSN: PMKID candidate event - bssid=" MACSTR
165 " index=%d preauth=%d",
166 MAC2STR(data
->pmkid_candidate
.bssid
),
167 data
->pmkid_candidate
.index
,
168 data
->pmkid_candidate
.preauth
);
170 pmksa_candidate_add(wpa_s
->wpa
, data
->pmkid_candidate
.bssid
,
171 data
->pmkid_candidate
.index
,
172 data
->pmkid_candidate
.preauth
);
176 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant
*wpa_s
)
178 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
||
179 wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
)
182 #ifdef IEEE8021X_EAPOL
183 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
&&
184 wpa_s
->current_ssid
&&
185 !(wpa_s
->current_ssid
->eapol_flags
&
186 (EAPOL_FLAG_REQUIRE_KEY_UNICAST
|
187 EAPOL_FLAG_REQUIRE_KEY_BROADCAST
))) {
188 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
189 * plaintext or static WEP keys). */
192 #endif /* IEEE8021X_EAPOL */
199 * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
200 * @wpa_s: pointer to wpa_supplicant data
201 * @ssid: Configuration data for the network
202 * Returns: 0 on success, -1 on failure
204 * This function is called when starting authentication with a network that is
205 * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
207 int wpa_supplicant_scard_init(struct wpa_supplicant
*wpa_s
,
208 struct wpa_ssid
*ssid
)
210 #ifdef IEEE8021X_EAPOL
211 int aka
= 0, sim
= 0;
216 if (ssid
->eap
.pcsc
== NULL
|| wpa_s
->scard
!= NULL
)
219 if (ssid
->eap
.eap_methods
== NULL
) {
223 struct eap_method_type
*eap
= ssid
->eap
.eap_methods
;
224 while (eap
->vendor
!= EAP_VENDOR_IETF
||
225 eap
->method
!= EAP_TYPE_NONE
) {
226 if (eap
->vendor
== EAP_VENDOR_IETF
) {
227 if (eap
->method
== EAP_TYPE_SIM
)
229 else if (eap
->method
== EAP_TYPE_AKA
)
236 if (eap_peer_get_eap_method(EAP_VENDOR_IETF
, EAP_TYPE_SIM
) == NULL
)
238 if (eap_peer_get_eap_method(EAP_VENDOR_IETF
, EAP_TYPE_AKA
) == NULL
)
242 wpa_printf(MSG_DEBUG
, "Selected network is configured to use "
243 "SIM, but neither EAP-SIM nor EAP-AKA are enabled");
247 wpa_printf(MSG_DEBUG
, "Selected network is configured to use SIM "
248 "(sim=%d aka=%d) - initialize PCSC", sim
, aka
);
251 type
= SCARD_TRY_BOTH
;
253 type
= SCARD_USIM_ONLY
;
255 type
= SCARD_GSM_SIM_ONLY
;
257 wpa_s
->scard
= scard_init(type
);
260 #endif /* PCSC_FUNCS */
261 if (wpa_s
->scard
== NULL
) {
262 wpa_printf(MSG_WARNING
, "Failed to initialize SIM "
266 wpa_sm_set_scard_ctx(wpa_s
->wpa
, wpa_s
->scard
);
267 eapol_sm_register_scard_ctx(wpa_s
->eapol
, wpa_s
->scard
);
268 #endif /* IEEE8021X_EAPOL */
274 #ifndef CONFIG_NO_SCAN_PROCESSING
275 static int wpa_supplicant_match_privacy(struct wpa_scan_res
*bss
,
276 struct wpa_ssid
*ssid
)
280 if (ssid
->mixed_cell
)
284 if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
)
286 #endif /* CONFIG_WPS */
288 for (i
= 0; i
< NUM_WEP_KEYS
; i
++) {
289 if (ssid
->wep_key_len
[i
]) {
294 #ifdef IEEE8021X_EAPOL
295 if ((ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
) &&
296 ssid
->eapol_flags
& (EAPOL_FLAG_REQUIRE_KEY_UNICAST
|
297 EAPOL_FLAG_REQUIRE_KEY_BROADCAST
))
299 #endif /* IEEE8021X_EAPOL */
301 if (bss
->caps
& IEEE80211_CAP_PRIVACY
)
307 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant
*wpa_s
,
308 struct wpa_ssid
*ssid
,
309 struct wpa_scan_res
*bss
)
311 struct wpa_ie_data ie
;
313 const u8
*rsn_ie
, *wpa_ie
;
316 ret
= wpas_wps_ssid_bss_match(wpa_s
, ssid
, bss
);
320 rsn_ie
= wpa_scan_get_ie(bss
, WLAN_EID_RSN
);
321 while ((ssid
->proto
& WPA_PROTO_RSN
) && rsn_ie
) {
324 if (wpa_parse_wpa_ie(rsn_ie
, 2 + rsn_ie
[1], &ie
)) {
325 wpa_printf(MSG_DEBUG
, " skip RSN IE - parse failed");
328 if (!(ie
.proto
& ssid
->proto
)) {
329 wpa_printf(MSG_DEBUG
, " skip RSN IE - proto "
334 if (!(ie
.pairwise_cipher
& ssid
->pairwise_cipher
)) {
335 wpa_printf(MSG_DEBUG
, " skip RSN IE - PTK cipher "
340 if (!(ie
.group_cipher
& ssid
->group_cipher
)) {
341 wpa_printf(MSG_DEBUG
, " skip RSN IE - GTK cipher "
346 if (!(ie
.key_mgmt
& ssid
->key_mgmt
)) {
347 wpa_printf(MSG_DEBUG
, " skip RSN IE - key mgmt "
352 #ifdef CONFIG_IEEE80211W
353 if (!(ie
.capabilities
& WPA_CAPABILITY_MFPC
) &&
354 ssid
->ieee80211w
== MGMT_FRAME_PROTECTION_REQUIRED
) {
355 wpa_printf(MSG_DEBUG
, " skip RSN IE - no mgmt frame "
359 #endif /* CONFIG_IEEE80211W */
361 wpa_printf(MSG_DEBUG
, " selected based on RSN IE");
365 wpa_ie
= wpa_scan_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
);
366 while ((ssid
->proto
& WPA_PROTO_WPA
) && wpa_ie
) {
369 if (wpa_parse_wpa_ie(wpa_ie
, 2 + wpa_ie
[1], &ie
)) {
370 wpa_printf(MSG_DEBUG
, " skip WPA IE - parse failed");
373 if (!(ie
.proto
& ssid
->proto
)) {
374 wpa_printf(MSG_DEBUG
, " skip WPA IE - proto "
379 if (!(ie
.pairwise_cipher
& ssid
->pairwise_cipher
)) {
380 wpa_printf(MSG_DEBUG
, " skip WPA IE - PTK cipher "
385 if (!(ie
.group_cipher
& ssid
->group_cipher
)) {
386 wpa_printf(MSG_DEBUG
, " skip WPA IE - GTK cipher "
391 if (!(ie
.key_mgmt
& ssid
->key_mgmt
)) {
392 wpa_printf(MSG_DEBUG
, " skip WPA IE - key mgmt "
397 wpa_printf(MSG_DEBUG
, " selected based on WPA IE");
401 if (proto_match
== 0)
402 wpa_printf(MSG_DEBUG
, " skip - no WPA/RSN proto match");
408 static int freq_allowed(int *freqs
, int freq
)
415 for (i
= 0; freqs
[i
]; i
++)
416 if (freqs
[i
] == freq
)
422 static struct wpa_bss
*
423 wpa_supplicant_select_bss_wpa(struct wpa_supplicant
*wpa_s
,
424 struct wpa_scan_results
*scan_res
,
425 struct wpa_ssid
*group
,
426 struct wpa_ssid
**selected_ssid
)
428 struct wpa_ssid
*ssid
;
429 struct wpa_scan_res
*bss
;
431 struct wpa_blacklist
*e
;
434 wpa_printf(MSG_DEBUG
, "Try to find WPA-enabled AP");
435 for (i
= 0; i
< scan_res
->num
; i
++) {
437 u8 wpa_ie_len
, rsn_ie_len
, ssid_len
;
438 bss
= scan_res
->res
[i
];
440 ie
= wpa_scan_get_ie(bss
, WLAN_EID_SSID
);
441 ssid_
= ie
? ie
+ 2 : (u8
*) "";
442 ssid_len
= ie
? ie
[1] : 0;
444 ie
= wpa_scan_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
);
445 wpa_ie_len
= ie
? ie
[1] : 0;
447 ie
= wpa_scan_get_ie(bss
, WLAN_EID_RSN
);
448 rsn_ie_len
= ie
? ie
[1] : 0;
450 wpa_printf(MSG_DEBUG
, "%d: " MACSTR
" ssid='%s' "
451 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
452 (int) i
, MAC2STR(bss
->bssid
),
453 wpa_ssid_txt(ssid_
, ssid_len
),
454 wpa_ie_len
, rsn_ie_len
, bss
->caps
);
456 e
= wpa_blacklist_get(wpa_s
, bss
->bssid
);
457 if (e
&& e
->count
> 1) {
458 wpa_printf(MSG_DEBUG
, " skip - blacklisted");
463 wpa_printf(MSG_DEBUG
, " skip - SSID not known");
467 if (wpa_ie_len
== 0 && rsn_ie_len
== 0) {
468 wpa_printf(MSG_DEBUG
, " skip - no WPA/RSN IE");
472 for (ssid
= group
; ssid
; ssid
= ssid
->pnext
) {
475 if (ssid
->disabled
) {
476 wpa_printf(MSG_DEBUG
, " skip - disabled");
481 if (ssid
->ssid_len
== 0 &&
482 wpas_wps_ssid_wildcard_ok(wpa_s
, ssid
, bss
))
484 #endif /* CONFIG_WPS */
487 (ssid_len
!= ssid
->ssid_len
||
488 os_memcmp(ssid_
, ssid
->ssid
, ssid_len
) != 0)) {
489 wpa_printf(MSG_DEBUG
, " skip - "
494 if (ssid
->bssid_set
&&
495 os_memcmp(bss
->bssid
, ssid
->bssid
, ETH_ALEN
) != 0)
497 wpa_printf(MSG_DEBUG
, " skip - "
502 if (!wpa_supplicant_ssid_bss_match(wpa_s
, ssid
, bss
))
505 if (!freq_allowed(ssid
->freq_list
, bss
->freq
)) {
506 wpa_printf(MSG_DEBUG
, " skip - "
507 "frequency not allowed");
511 wpa_printf(MSG_DEBUG
, " selected WPA AP "
514 wpa_ssid_txt(ssid_
, ssid_len
));
515 *selected_ssid
= ssid
;
516 return wpa_bss_get(wpa_s
, bss
->bssid
, ssid_
, ssid_len
);
524 static struct wpa_bss
*
525 wpa_supplicant_select_bss_non_wpa(struct wpa_supplicant
*wpa_s
,
526 struct wpa_scan_results
*scan_res
,
527 struct wpa_ssid
*group
,
528 struct wpa_ssid
**selected_ssid
)
530 struct wpa_ssid
*ssid
;
531 struct wpa_scan_res
*bss
;
533 struct wpa_blacklist
*e
;
536 wpa_printf(MSG_DEBUG
, "Try to find non-WPA AP");
537 for (i
= 0; i
< scan_res
->num
; i
++) {
539 u8 wpa_ie_len
, rsn_ie_len
, ssid_len
;
540 bss
= scan_res
->res
[i
];
542 ie
= wpa_scan_get_ie(bss
, WLAN_EID_SSID
);
543 ssid_
= ie
? ie
+ 2 : (u8
*) "";
544 ssid_len
= ie
? ie
[1] : 0;
546 ie
= wpa_scan_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
);
547 wpa_ie_len
= ie
? ie
[1] : 0;
549 ie
= wpa_scan_get_ie(bss
, WLAN_EID_RSN
);
550 rsn_ie_len
= ie
? ie
[1] : 0;
552 wpa_printf(MSG_DEBUG
, "%d: " MACSTR
" ssid='%s' "
553 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x",
554 (int) i
, MAC2STR(bss
->bssid
),
555 wpa_ssid_txt(ssid_
, ssid_len
),
556 wpa_ie_len
, rsn_ie_len
, bss
->caps
);
558 e
= wpa_blacklist_get(wpa_s
, bss
->bssid
);
559 if (e
&& e
->count
> 1) {
560 wpa_printf(MSG_DEBUG
, " skip - blacklisted");
565 wpa_printf(MSG_DEBUG
, " skip - SSID not known");
569 for (ssid
= group
; ssid
; ssid
= ssid
->pnext
) {
570 int check_ssid
= ssid
->ssid_len
!= 0;
572 if (ssid
->disabled
) {
573 wpa_printf(MSG_DEBUG
, " skip - disabled");
578 if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
) {
579 /* Only allow wildcard SSID match if an AP
580 * advertises active WPS operation that matches
583 if (ssid
->ssid_len
== 0 &&
584 wpas_wps_ssid_wildcard_ok(wpa_s
, ssid
,
588 #endif /* CONFIG_WPS */
591 (ssid_len
!= ssid
->ssid_len
||
592 os_memcmp(ssid_
, ssid
->ssid
, ssid_len
) != 0)) {
593 wpa_printf(MSG_DEBUG
, " skip - "
598 if (ssid
->bssid_set
&&
599 os_memcmp(bss
->bssid
, ssid
->bssid
, ETH_ALEN
) != 0)
601 wpa_printf(MSG_DEBUG
, " skip - "
606 if (!(ssid
->key_mgmt
& WPA_KEY_MGMT_NONE
) &&
607 !(ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
) &&
608 !(ssid
->key_mgmt
& WPA_KEY_MGMT_IEEE8021X_NO_WPA
))
610 wpa_printf(MSG_DEBUG
, " skip - "
611 "non-WPA network not allowed");
615 if ((ssid
->key_mgmt
&
616 (WPA_KEY_MGMT_IEEE8021X
| WPA_KEY_MGMT_PSK
|
617 WPA_KEY_MGMT_FT_IEEE8021X
| WPA_KEY_MGMT_FT_PSK
|
618 WPA_KEY_MGMT_IEEE8021X_SHA256
|
619 WPA_KEY_MGMT_PSK_SHA256
)) &&
620 (wpa_ie_len
!= 0 || rsn_ie_len
!= 0)) {
621 wpa_printf(MSG_DEBUG
, " skip - "
626 if (!wpa_supplicant_match_privacy(bss
, ssid
)) {
627 wpa_printf(MSG_DEBUG
, " skip - "
632 if (bss
->caps
& IEEE80211_CAP_IBSS
) {
633 wpa_printf(MSG_DEBUG
, " skip - "
634 "IBSS (adhoc) network");
638 if (!freq_allowed(ssid
->freq_list
, bss
->freq
)) {
639 wpa_printf(MSG_DEBUG
, " skip - "
640 "frequency not allowed");
644 wpa_printf(MSG_DEBUG
, " selected non-WPA AP "
647 wpa_ssid_txt(ssid_
, ssid_len
));
648 *selected_ssid
= ssid
;
649 return wpa_bss_get(wpa_s
, bss
->bssid
, ssid_
, ssid_len
);
657 static struct wpa_bss
*
658 wpa_supplicant_select_bss(struct wpa_supplicant
*wpa_s
,
659 struct wpa_scan_results
*scan_res
,
660 struct wpa_ssid
*group
,
661 struct wpa_ssid
**selected_ssid
)
663 struct wpa_bss
*selected
;
665 wpa_printf(MSG_DEBUG
, "Selecting BSS from priority group %d",
668 /* First, try to find WPA-enabled AP */
669 selected
= wpa_supplicant_select_bss_wpa(wpa_s
, scan_res
, group
,
674 /* If no WPA-enabled AP found, try to find non-WPA AP, if configuration
676 return wpa_supplicant_select_bss_non_wpa(wpa_s
, scan_res
, group
,
681 static struct wpa_bss
*
682 wpa_supplicant_pick_network(struct wpa_supplicant
*wpa_s
,
683 struct wpa_scan_results
*scan_res
,
684 struct wpa_ssid
**selected_ssid
)
686 struct wpa_bss
*selected
= NULL
;
689 while (selected
== NULL
) {
690 for (prio
= 0; prio
< wpa_s
->conf
->num_prio
; prio
++) {
691 selected
= wpa_supplicant_select_bss(
692 wpa_s
, scan_res
, wpa_s
->conf
->pssid
[prio
],
698 if (selected
== NULL
&& wpa_s
->blacklist
) {
699 wpa_printf(MSG_DEBUG
, "No APs found - clear blacklist "
701 wpa_blacklist_clear(wpa_s
);
702 wpa_s
->blacklist_cleared
++;
703 } else if (selected
== NULL
)
711 static void wpa_supplicant_req_new_scan(struct wpa_supplicant
*wpa_s
,
712 int timeout_sec
, int timeout_usec
)
714 if (!wpa_supplicant_enabled_networks(wpa_s
->conf
)) {
716 * No networks are enabled; short-circuit request so
717 * we don't wait timeout seconds before transitioning
720 wpa_supplicant_set_state(wpa_s
, WPA_INACTIVE
);
723 wpa_supplicant_req_scan(wpa_s
, timeout_sec
, timeout_usec
);
727 void wpa_supplicant_connect(struct wpa_supplicant
*wpa_s
,
728 struct wpa_bss
*selected
,
729 struct wpa_ssid
*ssid
)
731 if (wpas_wps_scan_pbc_overlap(wpa_s
, selected
, ssid
)) {
732 wpa_msg(wpa_s
, MSG_INFO
, WPS_EVENT_OVERLAP
733 "PBC session overlap");
734 wpa_supplicant_req_new_scan(wpa_s
, 10, 0);
739 * Do not trigger new association unless the BSSID has changed or if
740 * reassociation is requested. If we are in process of associating with
741 * the selected BSSID, do not trigger new attempt.
743 if (wpa_s
->reassociate
||
744 (os_memcmp(selected
->bssid
, wpa_s
->bssid
, ETH_ALEN
) != 0 &&
745 (wpa_s
->wpa_state
!= WPA_ASSOCIATING
||
746 os_memcmp(selected
->bssid
, wpa_s
->pending_bssid
, ETH_ALEN
) !=
748 if (wpa_supplicant_scard_init(wpa_s
, ssid
)) {
749 wpa_supplicant_req_new_scan(wpa_s
, 10, 0);
752 wpa_supplicant_associate(wpa_s
, selected
, ssid
);
754 wpa_printf(MSG_DEBUG
, "Already associated with the selected "
760 static struct wpa_ssid
*
761 wpa_supplicant_pick_new_network(struct wpa_supplicant
*wpa_s
)
764 struct wpa_ssid
*ssid
;
766 for (prio
= 0; prio
< wpa_s
->conf
->num_prio
; prio
++) {
767 for (ssid
= wpa_s
->conf
->pssid
[prio
]; ssid
; ssid
= ssid
->pnext
)
771 if (ssid
->mode
== IEEE80211_MODE_IBSS
||
772 ssid
->mode
== IEEE80211_MODE_AP
)
780 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
781 * on BSS added and BSS changed events */
782 static void wpa_supplicant_rsn_preauth_scan_results(
783 struct wpa_supplicant
*wpa_s
, struct wpa_scan_results
*scan_res
)
787 if (rsn_preauth_scan_results(wpa_s
->wpa
) < 0)
790 for (i
= scan_res
->num
- 1; i
>= 0; i
--) {
791 const u8
*ssid
, *rsn
;
792 struct wpa_scan_res
*r
;
794 r
= scan_res
->res
[i
];
796 ssid
= wpa_scan_get_ie(r
, WLAN_EID_SSID
);
800 rsn
= wpa_scan_get_ie(r
, WLAN_EID_RSN
);
804 rsn_preauth_scan_result(wpa_s
->wpa
, r
->bssid
, ssid
, rsn
);
810 static int wpa_supplicant_need_to_roam(struct wpa_supplicant
*wpa_s
,
811 struct wpa_bss
*selected
,
812 struct wpa_ssid
*ssid
,
813 struct wpa_scan_results
*scan_res
)
816 struct wpa_scan_res
*current_bss
= NULL
;
819 if (wpa_s
->reassociate
)
820 return 1; /* explicit request to reassociate */
821 if (wpa_s
->wpa_state
< WPA_ASSOCIATED
)
822 return 1; /* we are not associated; continue */
823 if (wpa_s
->current_ssid
== NULL
)
824 return 1; /* unknown current SSID */
825 if (wpa_s
->current_ssid
!= ssid
)
826 return 1; /* different network block */
828 for (i
= 0; i
< scan_res
->num
; i
++) {
829 struct wpa_scan_res
*res
= scan_res
->res
[i
];
831 if (os_memcmp(res
->bssid
, wpa_s
->bssid
, ETH_ALEN
) != 0)
834 ie
= wpa_scan_get_ie(res
, WLAN_EID_SSID
);
837 if (ie
[1] != wpa_s
->current_ssid
->ssid_len
||
838 os_memcmp(ie
+ 2, wpa_s
->current_ssid
->ssid
, ie
[1]) != 0)
845 return 1; /* current BSS not seen in scan results */
847 wpa_printf(MSG_DEBUG
, "Considering within-ESS reassociation");
848 wpa_printf(MSG_DEBUG
, "Current BSS: " MACSTR
" level=%d",
849 MAC2STR(current_bss
->bssid
), current_bss
->level
);
850 wpa_printf(MSG_DEBUG
, "Selected BSS: " MACSTR
" level=%d",
851 MAC2STR(selected
->bssid
), selected
->level
);
853 if (wpa_s
->current_ssid
->bssid_set
&&
854 os_memcmp(selected
->bssid
, wpa_s
->current_ssid
->bssid
, ETH_ALEN
) ==
856 wpa_printf(MSG_DEBUG
, "Allow reassociation - selected BSS has "
862 if (current_bss
->level
< 0) {
863 if (current_bss
->level
< -85)
865 else if (current_bss
->level
< -80)
867 else if (current_bss
->level
< -75)
869 else if (current_bss
->level
< -70)
874 if (abs(current_bss
->level
- selected
->level
) < min_diff
) {
875 wpa_printf(MSG_DEBUG
, "Skip roam - too small difference in "
884 static void wpa_supplicant_event_scan_results(struct wpa_supplicant
*wpa_s
,
885 union wpa_event_data
*data
)
887 struct wpa_bss
*selected
;
888 struct wpa_ssid
*ssid
= NULL
;
889 struct wpa_scan_results
*scan_res
;
895 #endif /* CONFIG_AP */
897 wpa_supplicant_notify_scanning(wpa_s
, 0);
899 scan_res
= wpa_supplicant_get_scan_results(wpa_s
,
900 data
? &data
->scan_info
:
902 if (scan_res
== NULL
) {
903 if (wpa_s
->conf
->ap_scan
== 2 || ap
)
905 wpa_printf(MSG_DEBUG
, "Failed to get scan results - try "
907 wpa_supplicant_req_new_scan(wpa_s
, 1, 0);
911 if (wpa_s
->scan_res_handler
) {
912 wpa_s
->scan_res_handler(wpa_s
, scan_res
);
913 wpa_s
->scan_res_handler
= NULL
;
914 wpa_scan_results_free(scan_res
);
919 wpa_printf(MSG_DEBUG
, "Ignore scan results in AP mode");
920 wpa_scan_results_free(scan_res
);
924 wpa_printf(MSG_DEBUG
, "New scan results available");
925 wpa_msg_ctrl(wpa_s
, MSG_INFO
, WPA_EVENT_SCAN_RESULTS
);
926 wpas_notify_scan_results(wpa_s
);
928 wpa_gui_amiga_inspect_scan_results(wpa_s
, scan_res
);
931 wpas_notify_scan_done(wpa_s
, 1);
933 if ((wpa_s
->conf
->ap_scan
== 2 && !wpas_wps_searching(wpa_s
))) {
934 wpa_scan_results_free(scan_res
);
938 if (wpa_s
->disconnected
) {
939 wpa_supplicant_set_state(wpa_s
, WPA_DISCONNECTED
);
940 wpa_scan_results_free(scan_res
);
944 if (bgscan_notify_scan(wpa_s
) == 1) {
945 wpa_scan_results_free(scan_res
);
949 wpa_supplicant_rsn_preauth_scan_results(wpa_s
, scan_res
);
951 selected
= wpa_supplicant_pick_network(wpa_s
, scan_res
, &ssid
);
955 skip
= !wpa_supplicant_need_to_roam(wpa_s
, selected
, ssid
,
957 wpa_scan_results_free(scan_res
);
960 wpa_supplicant_connect(wpa_s
, selected
, ssid
);
962 wpa_scan_results_free(scan_res
);
963 wpa_printf(MSG_DEBUG
, "No suitable network found");
964 ssid
= wpa_supplicant_pick_new_network(wpa_s
);
966 wpa_printf(MSG_DEBUG
, "Setup a new network");
967 wpa_supplicant_associate(wpa_s
, NULL
, ssid
);
970 int timeout_usec
= 0;
971 wpa_supplicant_req_new_scan(wpa_s
, timeout_sec
,
976 #endif /* CONFIG_NO_SCAN_PROCESSING */
979 static int wpa_supplicant_event_associnfo(struct wpa_supplicant
*wpa_s
,
980 union wpa_event_data
*data
)
982 int l
, len
, found
= 0, wpa_found
, rsn_found
;
985 wpa_printf(MSG_DEBUG
, "Association info event");
986 if (data
->assoc_info
.req_ies
)
987 wpa_hexdump(MSG_DEBUG
, "req_ies", data
->assoc_info
.req_ies
,
988 data
->assoc_info
.req_ies_len
);
989 if (data
->assoc_info
.resp_ies
)
990 wpa_hexdump(MSG_DEBUG
, "resp_ies", data
->assoc_info
.resp_ies
,
991 data
->assoc_info
.resp_ies_len
);
992 if (data
->assoc_info
.beacon_ies
)
993 wpa_hexdump(MSG_DEBUG
, "beacon_ies",
994 data
->assoc_info
.beacon_ies
,
995 data
->assoc_info
.beacon_ies_len
);
996 if (data
->assoc_info
.freq
)
997 wpa_printf(MSG_DEBUG
, "freq=%u MHz", data
->assoc_info
.freq
);
999 p
= data
->assoc_info
.req_ies
;
1000 l
= data
->assoc_info
.req_ies_len
;
1002 /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1003 while (p
&& l
>= 2) {
1006 wpa_hexdump(MSG_DEBUG
, "Truncated IE in assoc_info",
1010 if ((p
[0] == WLAN_EID_VENDOR_SPECIFIC
&& p
[1] >= 6 &&
1011 (os_memcmp(&p
[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1012 (p
[0] == WLAN_EID_RSN
&& p
[1] >= 2)) {
1013 if (wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, p
, len
))
1016 wpa_find_assoc_pmkid(wpa_s
);
1022 if (!found
&& data
->assoc_info
.req_ies
)
1023 wpa_sm_set_assoc_wpa_ie(wpa_s
->wpa
, NULL
, 0);
1025 #ifdef CONFIG_IEEE80211R
1027 if (wpa_s
->sme
.auth_alg
== WPA_AUTH_ALG_FT
) {
1029 if (wpa_drv_get_bssid(wpa_s
, bssid
) < 0 ||
1030 wpa_ft_validate_reassoc_resp(wpa_s
->wpa
,
1031 data
->assoc_info
.resp_ies
,
1032 data
->assoc_info
.resp_ies_len
,
1034 wpa_printf(MSG_DEBUG
, "FT: Validation of "
1035 "Reassociation Response failed");
1036 wpa_supplicant_deauthenticate(
1037 wpa_s
, WLAN_REASON_INVALID_IE
);
1042 p
= data
->assoc_info
.resp_ies
;
1043 l
= data
->assoc_info
.resp_ies_len
;
1045 /* Go through the IEs and make a copy of the MDIE, if present. */
1046 while (p
&& l
>= 2) {
1049 wpa_hexdump(MSG_DEBUG
, "Truncated IE in assoc_info",
1053 if (p
[0] == WLAN_EID_MOBILITY_DOMAIN
&&
1054 p
[1] >= MOBILITY_DOMAIN_ID_LEN
) {
1055 wpa_s
->sme
.ft_used
= 1;
1056 os_memcpy(wpa_s
->sme
.mobility_domain
, p
+ 2,
1057 MOBILITY_DOMAIN_ID_LEN
);
1063 #endif /* CONFIG_SME */
1065 wpa_sm_set_ft_params(wpa_s
->wpa
, data
->assoc_info
.resp_ies
,
1066 data
->assoc_info
.resp_ies_len
);
1067 #endif /* CONFIG_IEEE80211R */
1069 /* WPA/RSN IE from Beacon/ProbeResp */
1070 p
= data
->assoc_info
.beacon_ies
;
1071 l
= data
->assoc_info
.beacon_ies_len
;
1073 /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1075 wpa_found
= rsn_found
= 0;
1076 while (p
&& l
>= 2) {
1079 wpa_hexdump(MSG_DEBUG
, "Truncated IE in beacon_ies",
1084 p
[0] == WLAN_EID_VENDOR_SPECIFIC
&& p
[1] >= 6 &&
1085 os_memcmp(&p
[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1087 wpa_sm_set_ap_wpa_ie(wpa_s
->wpa
, p
, len
);
1091 p
[0] == WLAN_EID_RSN
&& p
[1] >= 2) {
1093 wpa_sm_set_ap_rsn_ie(wpa_s
->wpa
, p
, len
);
1100 if (!wpa_found
&& data
->assoc_info
.beacon_ies
)
1101 wpa_sm_set_ap_wpa_ie(wpa_s
->wpa
, NULL
, 0);
1102 if (!rsn_found
&& data
->assoc_info
.beacon_ies
)
1103 wpa_sm_set_ap_rsn_ie(wpa_s
->wpa
, NULL
, 0);
1104 if (wpa_found
|| rsn_found
)
1105 wpa_s
->ap_ies_from_associnfo
= 1;
1107 wpa_s
->assoc_freq
= data
->assoc_info
.freq
;
1113 static void wpa_supplicant_event_assoc(struct wpa_supplicant
*wpa_s
,
1114 union wpa_event_data
*data
)
1119 struct wpa_driver_capa capa
;
1122 if (wpa_s
->ap_iface
) {
1123 hostapd_notif_assoc(wpa_s
->ap_iface
->bss
[0],
1124 data
->assoc_info
.addr
,
1125 data
->assoc_info
.req_ies
,
1126 data
->assoc_info
.req_ies_len
);
1129 #endif /* CONFIG_AP */
1131 ft_completed
= wpa_ft_is_completed(wpa_s
->wpa
);
1132 if (data
&& wpa_supplicant_event_associnfo(wpa_s
, data
) < 0)
1135 wpa_supplicant_set_state(wpa_s
, WPA_ASSOCIATED
);
1136 if (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_USER_SPACE_MLME
)
1137 os_memcpy(bssid
, wpa_s
->bssid
, ETH_ALEN
);
1138 if ((wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_USER_SPACE_MLME
) ||
1139 (wpa_drv_get_bssid(wpa_s
, bssid
) >= 0 &&
1140 os_memcmp(bssid
, wpa_s
->bssid
, ETH_ALEN
) != 0)) {
1141 wpa_msg(wpa_s
, MSG_DEBUG
, "Associated to a new BSS: BSSID="
1142 MACSTR
, MAC2STR(bssid
));
1143 bssid_changed
= os_memcmp(wpa_s
->bssid
, bssid
, ETH_ALEN
);
1144 os_memcpy(wpa_s
->bssid
, bssid
, ETH_ALEN
);
1145 os_memset(wpa_s
->pending_bssid
, 0, ETH_ALEN
);
1147 wpas_notify_bssid_changed(wpa_s
);
1149 if (wpa_supplicant_dynamic_keys(wpa_s
) && !ft_completed
) {
1150 wpa_clear_keys(wpa_s
, bssid
);
1152 if (wpa_supplicant_select_config(wpa_s
) < 0) {
1153 wpa_supplicant_disassociate(
1154 wpa_s
, WLAN_REASON_DEAUTH_LEAVING
);
1157 if (wpa_s
->current_ssid
) {
1158 struct wpa_bss
*bss
= NULL
;
1159 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
1160 if (ssid
->ssid_len
> 0)
1161 bss
= wpa_bss_get(wpa_s
, bssid
,
1162 ssid
->ssid
, ssid
->ssid_len
);
1164 bss
= wpa_bss_get_bssid(wpa_s
, bssid
);
1166 wpa_s
->current_bss
= bss
;
1171 os_memcpy(wpa_s
->sme
.prev_bssid
, bssid
, ETH_ALEN
);
1172 wpa_s
->sme
.prev_bssid_set
= 1;
1173 #endif /* CONFIG_SME */
1175 wpa_msg(wpa_s
, MSG_INFO
, "Associated with " MACSTR
, MAC2STR(bssid
));
1176 if (wpa_s
->current_ssid
) {
1177 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1178 * initialized before association, but for other modes,
1179 * initialize PC/SC here, if the current configuration needs
1180 * smartcard or SIM/USIM. */
1181 wpa_supplicant_scard_init(wpa_s
, wpa_s
->current_ssid
);
1183 wpa_sm_notify_assoc(wpa_s
->wpa
, bssid
);
1185 l2_packet_notify_auth_start(wpa_s
->l2
);
1188 * Set portEnabled first to FALSE in order to get EAP state machine out
1189 * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1190 * state machine may transit to AUTHENTICATING state based on obsolete
1191 * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1192 * AUTHENTICATED without ever giving chance to EAP state machine to
1195 if (!ft_completed
) {
1196 eapol_sm_notify_portEnabled(wpa_s
->eapol
, FALSE
);
1197 eapol_sm_notify_portValid(wpa_s
->eapol
, FALSE
);
1199 if (wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
) || ft_completed
)
1200 eapol_sm_notify_eap_success(wpa_s
->eapol
, FALSE
);
1201 /* 802.1X::portControl = Auto */
1202 eapol_sm_notify_portEnabled(wpa_s
->eapol
, TRUE
);
1203 wpa_s
->eapol_received
= 0;
1204 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
||
1205 wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
||
1206 (wpa_s
->current_ssid
&&
1207 wpa_s
->current_ssid
->mode
== IEEE80211_MODE_IBSS
)) {
1208 wpa_supplicant_cancel_auth_timeout(wpa_s
);
1209 wpa_supplicant_set_state(wpa_s
, WPA_COMPLETED
);
1210 } else if (!ft_completed
) {
1211 /* Timeout for receiving the first EAPOL packet */
1212 wpa_supplicant_req_auth_timeout(wpa_s
, 10, 0);
1214 wpa_supplicant_cancel_scan(wpa_s
);
1216 if ((wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_4WAY_HANDSHAKE
) &&
1217 wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
)) {
1219 * We are done; the driver will take care of RSN 4-way
1222 wpa_supplicant_cancel_auth_timeout(wpa_s
);
1223 wpa_supplicant_set_state(wpa_s
, WPA_COMPLETED
);
1224 eapol_sm_notify_portValid(wpa_s
->eapol
, TRUE
);
1225 eapol_sm_notify_eap_success(wpa_s
->eapol
, TRUE
);
1228 if (wpa_s
->pending_eapol_rx
) {
1229 struct os_time now
, age
;
1231 os_time_sub(&now
, &wpa_s
->pending_eapol_rx_time
, &age
);
1232 if (age
.sec
== 0 && age
.usec
< 100000 &&
1233 os_memcmp(wpa_s
->pending_eapol_rx_src
, bssid
, ETH_ALEN
) ==
1235 wpa_printf(MSG_DEBUG
, "Process pending EAPOL frame "
1236 "that was received just before association "
1238 wpa_supplicant_rx_eapol(
1239 wpa_s
, wpa_s
->pending_eapol_rx_src
,
1240 wpabuf_head(wpa_s
->pending_eapol_rx
),
1241 wpabuf_len(wpa_s
->pending_eapol_rx
));
1243 wpabuf_free(wpa_s
->pending_eapol_rx
);
1244 wpa_s
->pending_eapol_rx
= NULL
;
1247 #ifdef CONFIG_BGSCAN
1248 if (wpa_s
->current_ssid
!= wpa_s
->bgscan_ssid
) {
1249 bgscan_deinit(wpa_s
);
1250 if (wpa_s
->current_ssid
&& wpa_s
->current_ssid
->bgscan
) {
1251 if (bgscan_init(wpa_s
, wpa_s
->current_ssid
)) {
1252 wpa_printf(MSG_DEBUG
, "Failed to initialize "
1255 * Live without bgscan; it is only used as a
1256 * roaming optimization, so the initial
1257 * connection is not affected.
1260 wpa_s
->bgscan_ssid
= wpa_s
->current_ssid
;
1262 wpa_s
->bgscan_ssid
= NULL
;
1264 #endif /* CONFIG_BGSCAN */
1266 if ((wpa_s
->key_mgmt
== WPA_KEY_MGMT_NONE
||
1267 wpa_s
->key_mgmt
== WPA_KEY_MGMT_IEEE8021X_NO_WPA
) &&
1268 wpa_s
->current_ssid
&& wpa_drv_get_capa(wpa_s
, &capa
) == 0 &&
1269 capa
.flags
& WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE
) {
1270 /* Set static WEP keys again */
1271 wpa_set_wep_keys(wpa_s
, wpa_s
->current_ssid
);
1276 static void wpa_supplicant_event_disassoc(struct wpa_supplicant
*wpa_s
,
1282 u8 prev_pending_bssid
[ETH_ALEN
];
1284 authenticating
= wpa_s
->wpa_state
== WPA_AUTHENTICATING
;
1285 os_memcpy(prev_pending_bssid
, wpa_s
->pending_bssid
, ETH_ALEN
);
1286 #endif /* CONFIG_SME */
1288 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPA_NONE
) {
1290 * At least Host AP driver and a Prism3 card seemed to be
1291 * generating streams of disconnected events when configuring
1292 * IBSS for WPA-None. Ignore them for now.
1294 wpa_printf(MSG_DEBUG
, "Disconnect event - ignore in "
1295 "IBSS/WPA-None mode");
1299 if (wpa_s
->wpa_state
== WPA_4WAY_HANDSHAKE
&&
1300 wpa_key_mgmt_wpa_psk(wpa_s
->key_mgmt
)) {
1301 wpa_msg(wpa_s
, MSG_INFO
, "WPA: 4-Way Handshake failed - "
1302 "pre-shared key may be incorrect");
1304 if (wpa_s
->wpa_state
>= WPA_ASSOCIATED
)
1305 wpa_supplicant_req_scan(wpa_s
, 0, 100000);
1306 bssid
= wpa_s
->bssid
;
1307 if (is_zero_ether_addr(bssid
))
1308 bssid
= wpa_s
->pending_bssid
;
1309 wpa_blacklist_add(wpa_s
, bssid
);
1310 wpa_sm_notify_disassoc(wpa_s
->wpa
);
1311 wpa_msg(wpa_s
, MSG_INFO
, WPA_EVENT_DISCONNECTED
"bssid=" MACSTR
1313 MAC2STR(bssid
), reason_code
);
1314 if (wpa_supplicant_dynamic_keys(wpa_s
)) {
1315 wpa_printf(MSG_DEBUG
, "Disconnect event - remove keys");
1316 wpa_s
->keys_cleared
= 0;
1317 wpa_clear_keys(wpa_s
, wpa_s
->bssid
);
1319 wpa_supplicant_mark_disassoc(wpa_s
);
1320 bgscan_deinit(wpa_s
);
1321 wpa_s
->bgscan_ssid
= NULL
;
1323 if (authenticating
&&
1324 (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SME
)) {
1326 * mac80211-workaround to force deauth on failed auth cmd,
1327 * requires us to remain in authenticating state to allow the
1328 * second authentication attempt to be continued properly.
1330 wpa_printf(MSG_DEBUG
, "SME: Allow pending authentication to "
1331 "proceed after disconnection event");
1332 wpa_supplicant_set_state(wpa_s
, WPA_AUTHENTICATING
);
1333 os_memcpy(wpa_s
->pending_bssid
, prev_pending_bssid
, ETH_ALEN
);
1335 #endif /* CONFIG_SME */
1339 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1340 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx
,
1343 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
1345 if (!wpa_s
->pending_mic_error_report
)
1348 wpa_printf(MSG_DEBUG
, "WPA: Sending pending MIC error report");
1349 wpa_sm_key_request(wpa_s
->wpa
, 1, wpa_s
->pending_mic_error_pairwise
);
1350 wpa_s
->pending_mic_error_report
= 0;
1352 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1356 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant
*wpa_s
,
1357 union wpa_event_data
*data
)
1362 wpa_msg(wpa_s
, MSG_WARNING
, "Michael MIC failure detected");
1363 pairwise
= (data
&& data
->michael_mic_failure
.unicast
);
1365 if ((wpa_s
->last_michael_mic_error
&&
1366 t
.sec
- wpa_s
->last_michael_mic_error
<= 60) ||
1367 wpa_s
->pending_mic_error_report
) {
1368 if (wpa_s
->pending_mic_error_report
) {
1370 * Send the pending MIC error report immediately since
1371 * we are going to start countermeasures and AP better
1374 wpa_sm_key_request(wpa_s
->wpa
, 1,
1375 wpa_s
->pending_mic_error_pairwise
);
1378 /* Send the new MIC error report immediately since we are going
1379 * to start countermeasures and AP better do the same.
1381 wpa_sm_key_request(wpa_s
->wpa
, 1, pairwise
);
1383 /* initialize countermeasures */
1384 wpa_s
->countermeasures
= 1;
1385 wpa_msg(wpa_s
, MSG_WARNING
, "TKIP countermeasures started");
1388 * Need to wait for completion of request frame. We do not get
1389 * any callback for the message completion, so just wait a
1390 * short while and hope for the best. */
1393 wpa_drv_set_countermeasures(wpa_s
, 1);
1394 wpa_supplicant_deauthenticate(wpa_s
,
1395 WLAN_REASON_MICHAEL_MIC_FAILURE
);
1396 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures
,
1398 eloop_register_timeout(60, 0,
1399 wpa_supplicant_stop_countermeasures
,
1401 /* TODO: mark the AP rejected for 60 second. STA is
1402 * allowed to associate with another AP.. */
1404 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1405 if (wpa_s
->mic_errors_seen
) {
1407 * Reduce the effectiveness of Michael MIC error
1408 * reports as a means for attacking against TKIP if
1409 * more than one MIC failure is noticed with the same
1410 * PTK. We delay the transmission of the reports by a
1411 * random time between 0 and 60 seconds in order to
1412 * force the attacker wait 60 seconds before getting
1413 * the information on whether a frame resulted in a MIC
1419 if (os_get_random(rval
, sizeof(rval
)) < 0)
1420 sec
= os_random() % 60;
1422 sec
= WPA_GET_BE32(rval
) % 60;
1423 wpa_printf(MSG_DEBUG
, "WPA: Delay MIC error report %d "
1425 wpa_s
->pending_mic_error_report
= 1;
1426 wpa_s
->pending_mic_error_pairwise
= pairwise
;
1427 eloop_cancel_timeout(
1428 wpa_supplicant_delayed_mic_error_report
,
1430 eloop_register_timeout(
1431 sec
, os_random() % 1000000,
1432 wpa_supplicant_delayed_mic_error_report
,
1435 wpa_sm_key_request(wpa_s
->wpa
, 1, pairwise
);
1437 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1438 wpa_sm_key_request(wpa_s
->wpa
, 1, pairwise
);
1439 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1441 wpa_s
->last_michael_mic_error
= t
.sec
;
1442 wpa_s
->mic_errors_seen
++;
1446 #ifdef CONFIG_TERMINATE_ONLASTIF
1447 static int any_interfaces(struct wpa_supplicant
*head
)
1449 struct wpa_supplicant
*wpa_s
;
1451 for (wpa_s
= head
; wpa_s
!= NULL
; wpa_s
= wpa_s
->next
)
1452 if (!wpa_s
->interface_removed
)
1456 #endif /* CONFIG_TERMINATE_ONLASTIF */
1460 wpa_supplicant_event_interface_status(struct wpa_supplicant
*wpa_s
,
1461 union wpa_event_data
*data
)
1463 if (os_strcmp(wpa_s
->ifname
, data
->interface_status
.ifname
) != 0)
1466 switch (data
->interface_status
.ievent
) {
1467 case EVENT_INTERFACE_ADDED
:
1468 if (!wpa_s
->interface_removed
)
1470 wpa_s
->interface_removed
= 0;
1471 wpa_printf(MSG_DEBUG
, "Configured interface was added.");
1472 if (wpa_supplicant_driver_init(wpa_s
) < 0) {
1473 wpa_printf(MSG_INFO
, "Failed to initialize the driver "
1474 "after interface was added.");
1477 case EVENT_INTERFACE_REMOVED
:
1478 wpa_printf(MSG_DEBUG
, "Configured interface was removed.");
1479 wpa_s
->interface_removed
= 1;
1480 wpa_supplicant_mark_disassoc(wpa_s
);
1481 l2_packet_deinit(wpa_s
->l2
);
1483 #ifdef CONFIG_TERMINATE_ONLASTIF
1484 /* check if last interface */
1485 if (!any_interfaces(wpa_s
->global
->ifaces
))
1487 #endif /* CONFIG_TERMINATE_ONLASTIF */
1493 #ifdef CONFIG_PEERKEY
1495 wpa_supplicant_event_stkstart(struct wpa_supplicant
*wpa_s
,
1496 union wpa_event_data
*data
)
1500 wpa_sm_stkstart(wpa_s
->wpa
, data
->stkstart
.peer
);
1502 #endif /* CONFIG_PEERKEY */
1505 #ifdef CONFIG_IEEE80211R
1507 wpa_supplicant_event_ft_response(struct wpa_supplicant
*wpa_s
,
1508 union wpa_event_data
*data
)
1513 if (wpa_ft_process_response(wpa_s
->wpa
, data
->ft_ies
.ies
,
1514 data
->ft_ies
.ies_len
,
1515 data
->ft_ies
.ft_action
,
1516 data
->ft_ies
.target_ap
,
1517 data
->ft_ies
.ric_ies
,
1518 data
->ft_ies
.ric_ies_len
) < 0) {
1519 /* TODO: prevent MLME/driver from trying to associate? */
1522 #endif /* CONFIG_IEEE80211R */
1525 #ifdef CONFIG_IBSS_RSN
1526 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant
*wpa_s
,
1527 union wpa_event_data
*data
)
1531 ibss_rsn_start(wpa_s
->ibss_rsn
, data
->ibss_rsn_start
.peer
);
1533 #endif /* CONFIG_IBSS_RSN */
1536 #ifdef CONFIG_IEEE80211R
1537 static void ft_rx_action(struct wpa_supplicant
*wpa_s
, const u8
*data
,
1540 const u8
*sta_addr
, *target_ap_addr
;
1543 wpa_hexdump(MSG_MSGDUMP
, "FT: RX Action", data
, len
);
1544 if (!(wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SME
))
1545 return; /* only SME case supported for now */
1546 if (len
< 1 + 2 * ETH_ALEN
+ 2)
1549 return; /* Only FT Action Response is supported for now */
1550 sta_addr
= data
+ 1;
1551 target_ap_addr
= data
+ 1 + ETH_ALEN
;
1552 status
= WPA_GET_LE16(data
+ 1 + 2 * ETH_ALEN
);
1553 wpa_printf(MSG_DEBUG
, "FT: Received FT Action Response: STA " MACSTR
1554 " TargetAP " MACSTR
" status %u",
1555 MAC2STR(sta_addr
), MAC2STR(target_ap_addr
), status
);
1557 if (os_memcmp(sta_addr
, wpa_s
->own_addr
, ETH_ALEN
) != 0) {
1558 wpa_printf(MSG_DEBUG
, "FT: Foreign STA Address " MACSTR
1559 " in FT Action Response", MAC2STR(sta_addr
));
1564 wpa_printf(MSG_DEBUG
, "FT: FT Action Response indicates "
1565 "failure (status code %d)", status
);
1566 /* TODO: report error to FT code(?) */
1570 if (wpa_ft_process_response(wpa_s
->wpa
, data
+ 1 + 2 * ETH_ALEN
+ 2,
1571 len
- (1 + 2 * ETH_ALEN
+ 2), 1,
1572 target_ap_addr
, NULL
, 0) < 0)
1577 struct wpa_bss
*bss
;
1578 bss
= wpa_bss_get_bssid(wpa_s
, target_ap_addr
);
1580 wpa_s
->sme
.freq
= bss
->freq
;
1581 wpa_s
->sme
.auth_alg
= WPA_AUTH_ALG_FT
;
1582 sme_associate(wpa_s
, WPAS_MODE_INFRA
, target_ap_addr
,
1585 #endif /* CONFIG_SME */
1587 #endif /* CONFIG_IEEE80211R */
1590 void wpa_supplicant_event(void *ctx
, enum wpa_event_type event
,
1591 union wpa_event_data
*data
)
1593 struct wpa_supplicant
*wpa_s
= ctx
;
1594 u16 reason_code
= 0;
1598 sme_event_auth(wpa_s
, data
);
1601 wpa_supplicant_event_assoc(wpa_s
, data
);
1603 case EVENT_DISASSOC
:
1604 wpa_printf(MSG_DEBUG
, "Disassociation notification");
1606 if (wpa_s
->ap_iface
&& data
&& data
->disassoc_info
.addr
) {
1607 hostapd_notif_disassoc(wpa_s
->ap_iface
->bss
[0],
1608 data
->disassoc_info
.addr
);
1611 #endif /* CONFIG_AP */
1613 reason_code
= data
->deauth_info
.reason_code
;
1614 if (wpa_s
->drv_flags
& WPA_DRIVER_FLAGS_SME
)
1615 sme_event_disassoc(wpa_s
, data
);
1618 if (event
== EVENT_DEAUTH
) {
1619 wpa_printf(MSG_DEBUG
, "Deauthentication notification");
1621 reason_code
= data
->deauth_info
.reason_code
;
1624 if (wpa_s
->ap_iface
&& data
&& data
->deauth_info
.addr
) {
1625 hostapd_notif_disassoc(wpa_s
->ap_iface
->bss
[0],
1626 data
->deauth_info
.addr
);
1629 #endif /* CONFIG_AP */
1630 wpa_supplicant_event_disassoc(wpa_s
, reason_code
);
1632 case EVENT_MICHAEL_MIC_FAILURE
:
1633 wpa_supplicant_event_michael_mic_failure(wpa_s
, data
);
1635 #ifndef CONFIG_NO_SCAN_PROCESSING
1636 case EVENT_SCAN_RESULTS
:
1637 wpa_supplicant_event_scan_results(wpa_s
, data
);
1639 #endif /* CONFIG_NO_SCAN_PROCESSING */
1640 case EVENT_ASSOCINFO
:
1641 wpa_supplicant_event_associnfo(wpa_s
, data
);
1643 case EVENT_INTERFACE_STATUS
:
1644 wpa_supplicant_event_interface_status(wpa_s
, data
);
1646 case EVENT_PMKID_CANDIDATE
:
1647 wpa_supplicant_event_pmkid_candidate(wpa_s
, data
);
1649 #ifdef CONFIG_PEERKEY
1650 case EVENT_STKSTART
:
1651 wpa_supplicant_event_stkstart(wpa_s
, data
);
1653 #endif /* CONFIG_PEERKEY */
1654 #ifdef CONFIG_IEEE80211R
1655 case EVENT_FT_RESPONSE
:
1656 wpa_supplicant_event_ft_response(wpa_s
, data
);
1658 #endif /* CONFIG_IEEE80211R */
1659 #ifdef CONFIG_IBSS_RSN
1660 case EVENT_IBSS_RSN_START
:
1661 wpa_supplicant_event_ibss_rsn_start(wpa_s
, data
);
1663 #endif /* CONFIG_IBSS_RSN */
1664 case EVENT_ASSOC_REJECT
:
1665 sme_event_assoc_reject(wpa_s
, data
);
1667 case EVENT_AUTH_TIMED_OUT
:
1668 sme_event_auth_timed_out(wpa_s
, data
);
1670 case EVENT_ASSOC_TIMED_OUT
:
1671 sme_event_assoc_timed_out(wpa_s
, data
);
1674 case EVENT_TX_STATUS
:
1675 if (wpa_s
->ap_iface
== NULL
)
1677 switch (data
->tx_status
.type
) {
1678 case WLAN_FC_TYPE_MGMT
:
1679 ap_mgmt_tx_cb(wpa_s
, data
->tx_status
.data
,
1680 data
->tx_status
.data_len
,
1681 data
->tx_status
.stype
,
1682 data
->tx_status
.ack
);
1684 case WLAN_FC_TYPE_DATA
:
1685 ap_tx_status(wpa_s
, data
->tx_status
.dst
,
1686 data
->tx_status
.data
,
1687 data
->tx_status
.data_len
,
1688 data
->tx_status
.ack
);
1692 case EVENT_RX_FROM_UNKNOWN
:
1693 if (wpa_s
->ap_iface
== NULL
)
1695 ap_rx_from_unknown_sta(wpa_s
, data
->rx_from_unknown
.frame
,
1696 data
->rx_from_unknown
.len
);
1699 if (wpa_s
->ap_iface
== NULL
)
1701 ap_mgmt_rx(wpa_s
, &data
->rx_mgmt
);
1703 #endif /* CONFIG_AP */
1704 case EVENT_RX_ACTION
:
1705 wpa_printf(MSG_DEBUG
, "Received Action frame: SA=" MACSTR
1706 " Category=%u DataLen=%d freq=%d MHz",
1707 MAC2STR(data
->rx_action
.sa
),
1708 data
->rx_action
.category
, (int) data
->rx_action
.len
,
1709 data
->rx_action
.freq
);
1710 #ifdef CONFIG_IEEE80211R
1711 if (data
->rx_action
.category
== WLAN_ACTION_FT
) {
1712 ft_rx_action(wpa_s
, data
->rx_action
.data
,
1713 data
->rx_action
.len
);
1716 #endif /* CONFIG_IEEE80211R */
1718 #ifdef CONFIG_CLIENT_MLME
1719 case EVENT_MLME_RX
: {
1720 struct ieee80211_rx_status rx_status
;
1721 os_memset(&rx_status
, 0, sizeof(rx_status
));
1722 rx_status
.freq
= data
->mlme_rx
.freq
;
1723 rx_status
.channel
= data
->mlme_rx
.channel
;
1724 rx_status
.ssi
= data
->mlme_rx
.ssi
;
1725 ieee80211_sta_rx(wpa_s
, data
->mlme_rx
.buf
, data
->mlme_rx
.len
,
1729 #endif /* CONFIG_CLIENT_MLME */
1730 case EVENT_EAPOL_RX
:
1731 wpa_supplicant_rx_eapol(wpa_s
, data
->eapol_rx
.src
,
1732 data
->eapol_rx
.data
,
1733 data
->eapol_rx
.data_len
);
1735 case EVENT_SIGNAL_CHANGE
:
1736 bgscan_notify_signal_change(
1737 wpa_s
, data
->signal_change
.above_threshold
);
1740 wpa_printf(MSG_INFO
, "Unknown event %d", event
);