2 * wpa_supplicant - IBSS RSN
3 * Copyright (c) 2009-2013, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #include "common/wpa_ctrl.h"
13 #include "utils/eloop.h"
14 #include "l2_packet/l2_packet.h"
15 #include "rsn_supp/wpa.h"
16 #include "rsn_supp/wpa_ie.h"
17 #include "ap/wpa_auth.h"
18 #include "wpa_supplicant_i.h"
20 #include "common/ieee802_11_defs.h"
24 static void ibss_rsn_auth_timeout(void *eloop_ctx
, void *timeout_ctx
);
27 static struct ibss_rsn_peer
* ibss_rsn_get_peer(struct ibss_rsn
*ibss_rsn
,
30 struct ibss_rsn_peer
*peer
;
32 for (peer
= ibss_rsn
->peers
; peer
; peer
= peer
->next
)
33 if (os_memcmp(addr
, peer
->addr
, ETH_ALEN
) == 0)
39 static void ibss_rsn_free(struct ibss_rsn_peer
*peer
)
41 eloop_cancel_timeout(ibss_rsn_auth_timeout
, peer
, NULL
);
42 wpa_auth_sta_deinit(peer
->auth
);
43 wpa_sm_deinit(peer
->supp
);
48 static void supp_set_state(void *ctx
, enum wpa_states state
)
50 struct ibss_rsn_peer
*peer
= ctx
;
51 peer
->supp_state
= state
;
55 static enum wpa_states
supp_get_state(void *ctx
)
57 struct ibss_rsn_peer
*peer
= ctx
;
58 return peer
->supp_state
;
62 static int supp_ether_send(void *ctx
, const u8
*dest
, u16 proto
, const u8
*buf
,
65 struct ibss_rsn_peer
*peer
= ctx
;
66 struct wpa_supplicant
*wpa_s
= peer
->ibss_rsn
->wpa_s
;
68 wpa_printf(MSG_DEBUG
, "SUPP: %s(dest=" MACSTR
" proto=0x%04x "
70 __func__
, MAC2STR(dest
), proto
, (unsigned long) len
);
73 return l2_packet_send(wpa_s
->l2
, dest
, proto
, buf
, len
);
79 static u8
* supp_alloc_eapol(void *ctx
, u8 type
, const void *data
,
80 u16 data_len
, size_t *msg_len
, void **data_pos
)
82 struct ieee802_1x_hdr
*hdr
;
84 wpa_printf(MSG_DEBUG
, "SUPP: %s(type=%d data_len=%d)",
85 __func__
, type
, data_len
);
87 *msg_len
= sizeof(*hdr
) + data_len
;
88 hdr
= os_malloc(*msg_len
);
94 hdr
->length
= host_to_be16(data_len
);
97 os_memcpy(hdr
+ 1, data
, data_len
);
99 os_memset(hdr
+ 1, 0, data_len
);
108 static int supp_get_beacon_ie(void *ctx
)
110 struct ibss_rsn_peer
*peer
= ctx
;
112 wpa_printf(MSG_DEBUG
, "SUPP: %s", __func__
);
113 /* TODO: get correct RSN IE */
114 return wpa_sm_set_ap_rsn_ie(peer
->supp
,
115 (u8
*) "\x30\x14\x01\x00"
117 "\x01\x00\x00\x0f\xac\x04"
118 "\x01\x00\x00\x0f\xac\x02"
123 static void ibss_check_rsn_completed(struct ibss_rsn_peer
*peer
)
125 struct wpa_supplicant
*wpa_s
= peer
->ibss_rsn
->wpa_s
;
127 if ((peer
->authentication_status
&
128 (IBSS_RSN_SET_PTK_SUPP
| IBSS_RSN_SET_PTK_AUTH
)) !=
129 (IBSS_RSN_SET_PTK_SUPP
| IBSS_RSN_SET_PTK_AUTH
))
131 if (peer
->authentication_status
& IBSS_RSN_REPORTED_PTK
)
133 peer
->authentication_status
|= IBSS_RSN_REPORTED_PTK
;
134 wpa_msg(wpa_s
, MSG_INFO
, IBSS_RSN_COMPLETED MACSTR
,
135 MAC2STR(peer
->addr
));
139 static int supp_set_key(void *ctx
, enum wpa_alg alg
,
140 const u8
*addr
, int key_idx
, int set_tx
,
141 const u8
*seq
, size_t seq_len
,
142 const u8
*key
, size_t key_len
)
144 struct ibss_rsn_peer
*peer
= ctx
;
146 wpa_printf(MSG_DEBUG
, "SUPP: %s(alg=%d addr=" MACSTR
" key_idx=%d "
148 __func__
, alg
, MAC2STR(addr
), key_idx
, set_tx
);
149 wpa_hexdump(MSG_DEBUG
, "SUPP: set_key - seq", seq
, seq_len
);
150 wpa_hexdump_key(MSG_DEBUG
, "SUPP: set_key - key", key
, key_len
);
153 peer
->authentication_status
|= IBSS_RSN_SET_PTK_SUPP
;
154 ibss_check_rsn_completed(peer
);
156 * In IBSS RSN, the pairwise key from the 4-way handshake
157 * initiated by the peer with highest MAC address is used.
159 if (os_memcmp(peer
->ibss_rsn
->wpa_s
->own_addr
, peer
->addr
,
161 wpa_printf(MSG_DEBUG
, "SUPP: Do not use this PTK");
166 if (is_broadcast_ether_addr(addr
))
168 return wpa_drv_set_key(peer
->ibss_rsn
->wpa_s
, alg
, addr
, key_idx
,
169 set_tx
, seq
, seq_len
, key
, key_len
);
173 static void * supp_get_network_ctx(void *ctx
)
175 struct ibss_rsn_peer
*peer
= ctx
;
176 return wpa_supplicant_get_ssid(peer
->ibss_rsn
->wpa_s
);
180 static int supp_mlme_setprotection(void *ctx
, const u8
*addr
,
181 int protection_type
, int key_type
)
183 wpa_printf(MSG_DEBUG
, "SUPP: %s(addr=" MACSTR
" protection_type=%d "
185 __func__
, MAC2STR(addr
), protection_type
, key_type
);
190 static void supp_cancel_auth_timeout(void *ctx
)
192 wpa_printf(MSG_DEBUG
, "SUPP: %s", __func__
);
196 static void supp_deauthenticate(void * ctx
, int reason_code
)
198 wpa_printf(MSG_DEBUG
, "SUPP: %s (TODO)", __func__
);
202 static int ibss_rsn_supp_init(struct ibss_rsn_peer
*peer
, const u8
*own_addr
,
205 struct wpa_sm_ctx
*ctx
= os_zalloc(sizeof(*ctx
));
210 ctx
->msg_ctx
= peer
->ibss_rsn
->wpa_s
;
211 ctx
->set_state
= supp_set_state
;
212 ctx
->get_state
= supp_get_state
;
213 ctx
->ether_send
= supp_ether_send
;
214 ctx
->get_beacon_ie
= supp_get_beacon_ie
;
215 ctx
->alloc_eapol
= supp_alloc_eapol
;
216 ctx
->set_key
= supp_set_key
;
217 ctx
->get_network_ctx
= supp_get_network_ctx
;
218 ctx
->mlme_setprotection
= supp_mlme_setprotection
;
219 ctx
->cancel_auth_timeout
= supp_cancel_auth_timeout
;
220 ctx
->deauthenticate
= supp_deauthenticate
;
221 peer
->supp
= wpa_sm_init(ctx
);
222 if (peer
->supp
== NULL
) {
223 wpa_printf(MSG_DEBUG
, "SUPP: wpa_sm_init() failed");
227 wpa_sm_set_own_addr(peer
->supp
, own_addr
);
228 wpa_sm_set_param(peer
->supp
, WPA_PARAM_RSN_ENABLED
, 1);
229 wpa_sm_set_param(peer
->supp
, WPA_PARAM_PROTO
, WPA_PROTO_RSN
);
230 wpa_sm_set_param(peer
->supp
, WPA_PARAM_PAIRWISE
, WPA_CIPHER_CCMP
);
231 wpa_sm_set_param(peer
->supp
, WPA_PARAM_GROUP
, WPA_CIPHER_CCMP
);
232 wpa_sm_set_param(peer
->supp
, WPA_PARAM_KEY_MGMT
, WPA_KEY_MGMT_PSK
);
233 wpa_sm_set_pmk(peer
->supp
, psk
, PMK_LEN
, NULL
);
235 peer
->supp_ie_len
= sizeof(peer
->supp_ie
);
236 if (wpa_sm_set_assoc_wpa_ie_default(peer
->supp
, peer
->supp_ie
,
237 &peer
->supp_ie_len
) < 0) {
238 wpa_printf(MSG_DEBUG
, "SUPP: wpa_sm_set_assoc_wpa_ie_default()"
243 wpa_sm_notify_assoc(peer
->supp
, peer
->addr
);
249 static void auth_logger(void *ctx
, const u8
*addr
, logger_level level
,
253 wpa_printf(MSG_DEBUG
, "AUTH: " MACSTR
" - %s",
256 wpa_printf(MSG_DEBUG
, "AUTH: %s", txt
);
260 static const u8
* auth_get_psk(void *ctx
, const u8
*addr
,
261 const u8
*p2p_dev_addr
, const u8
*prev_psk
)
263 struct ibss_rsn
*ibss_rsn
= ctx
;
264 wpa_printf(MSG_DEBUG
, "AUTH: %s (addr=" MACSTR
" prev_psk=%p)",
265 __func__
, MAC2STR(addr
), prev_psk
);
268 return ibss_rsn
->psk
;
272 static int auth_send_eapol(void *ctx
, const u8
*addr
, const u8
*data
,
273 size_t data_len
, int encrypt
)
275 struct ibss_rsn
*ibss_rsn
= ctx
;
276 struct wpa_supplicant
*wpa_s
= ibss_rsn
->wpa_s
;
278 wpa_printf(MSG_DEBUG
, "AUTH: %s(addr=" MACSTR
" data_len=%lu "
280 __func__
, MAC2STR(addr
), (unsigned long) data_len
, encrypt
);
283 return l2_packet_send(wpa_s
->l2
, addr
, ETH_P_EAPOL
, data
,
290 static int auth_set_key(void *ctx
, int vlan_id
, enum wpa_alg alg
,
291 const u8
*addr
, int idx
, u8
*key
, size_t key_len
)
293 struct ibss_rsn
*ibss_rsn
= ctx
;
296 os_memset(seq
, 0, sizeof(seq
));
299 wpa_printf(MSG_DEBUG
, "AUTH: %s(alg=%d addr=" MACSTR
301 __func__
, alg
, MAC2STR(addr
), idx
);
303 wpa_printf(MSG_DEBUG
, "AUTH: %s(alg=%d key_idx=%d)",
306 wpa_hexdump_key(MSG_DEBUG
, "AUTH: set_key - key", key
, key_len
);
310 struct ibss_rsn_peer
*peer
;
311 peer
= ibss_rsn_get_peer(ibss_rsn
, addr
);
313 peer
->authentication_status
|=
314 IBSS_RSN_SET_PTK_AUTH
;
315 ibss_check_rsn_completed(peer
);
319 * In IBSS RSN, the pairwise key from the 4-way handshake
320 * initiated by the peer with highest MAC address is used.
323 os_memcmp(ibss_rsn
->wpa_s
->own_addr
, addr
, ETH_ALEN
) < 0) {
324 wpa_printf(MSG_DEBUG
, "AUTH: Do not use this PTK");
329 return wpa_drv_set_key(ibss_rsn
->wpa_s
, alg
, addr
, idx
,
330 1, seq
, 6, key
, key_len
);
334 static void ibss_rsn_disconnect(void *ctx
, const u8
*addr
, u16 reason
)
336 struct ibss_rsn
*ibss_rsn
= ctx
;
337 wpa_drv_sta_deauth(ibss_rsn
->wpa_s
, addr
, reason
);
341 static int auth_for_each_sta(void *ctx
, int (*cb
)(struct wpa_state_machine
*sm
,
345 struct ibss_rsn
*ibss_rsn
= ctx
;
346 struct ibss_rsn_peer
*peer
;
348 wpa_printf(MSG_DEBUG
, "AUTH: for_each_sta");
350 for (peer
= ibss_rsn
->peers
; peer
; peer
= peer
->next
) {
351 if (peer
->auth
&& cb(peer
->auth
, cb_ctx
))
359 static void ibss_set_sta_authorized(struct ibss_rsn
*ibss_rsn
,
360 struct ibss_rsn_peer
*peer
, int authorized
)
365 res
= wpa_drv_sta_set_flags(ibss_rsn
->wpa_s
, peer
->addr
,
367 WPA_STA_AUTHORIZED
, ~0);
368 wpa_printf(MSG_DEBUG
, "AUTH: " MACSTR
" authorizing port",
369 MAC2STR(peer
->addr
));
371 res
= wpa_drv_sta_set_flags(ibss_rsn
->wpa_s
, peer
->addr
,
372 0, 0, ~WPA_STA_AUTHORIZED
);
373 wpa_printf(MSG_DEBUG
, "AUTH: " MACSTR
" unauthorizing port",
374 MAC2STR(peer
->addr
));
377 if (res
&& errno
!= ENOENT
) {
378 wpa_printf(MSG_DEBUG
, "Could not set station " MACSTR
" flags "
379 "for kernel driver (errno=%d)",
380 MAC2STR(peer
->addr
), errno
);
385 static void auth_set_eapol(void *ctx
, const u8
*addr
,
386 wpa_eapol_variable var
, int value
)
388 struct ibss_rsn
*ibss_rsn
= ctx
;
389 struct ibss_rsn_peer
*peer
= ibss_rsn_get_peer(ibss_rsn
, addr
);
395 case WPA_EAPOL_authorized
:
396 ibss_set_sta_authorized(ibss_rsn
, peer
, value
);
399 /* do not handle any other event */
400 wpa_printf(MSG_DEBUG
, "AUTH: eapol event not handled %d", var
);
406 static int ibss_rsn_auth_init_group(struct ibss_rsn
*ibss_rsn
,
409 struct wpa_auth_config conf
;
410 struct wpa_auth_callbacks cb
;
412 wpa_printf(MSG_DEBUG
, "AUTH: Initializing group state machine");
414 os_memset(&conf
, 0, sizeof(conf
));
416 conf
.wpa_key_mgmt
= WPA_KEY_MGMT_PSK
;
417 conf
.wpa_pairwise
= WPA_CIPHER_CCMP
;
418 conf
.rsn_pairwise
= WPA_CIPHER_CCMP
;
419 conf
.wpa_group
= WPA_CIPHER_CCMP
;
420 conf
.eapol_version
= 2;
421 conf
.wpa_group_rekey
= 600;
423 os_memset(&cb
, 0, sizeof(cb
));
425 cb
.logger
= auth_logger
;
426 cb
.set_eapol
= auth_set_eapol
;
427 cb
.send_eapol
= auth_send_eapol
;
428 cb
.get_psk
= auth_get_psk
;
429 cb
.set_key
= auth_set_key
;
430 cb
.for_each_sta
= auth_for_each_sta
;
431 cb
.disconnect
= ibss_rsn_disconnect
;
433 ibss_rsn
->auth_group
= wpa_init(own_addr
, &conf
, &cb
);
434 if (ibss_rsn
->auth_group
== NULL
) {
435 wpa_printf(MSG_DEBUG
, "AUTH: wpa_init() failed");
439 wpa_init_keys(ibss_rsn
->auth_group
);
445 static int ibss_rsn_auth_init(struct ibss_rsn
*ibss_rsn
,
446 struct ibss_rsn_peer
*peer
)
448 peer
->auth
= wpa_auth_sta_init(ibss_rsn
->auth_group
, peer
->addr
, NULL
);
449 if (peer
->auth
== NULL
) {
450 wpa_printf(MSG_DEBUG
, "AUTH: wpa_auth_sta_init() failed");
454 /* TODO: get peer RSN IE with Probe Request */
455 if (wpa_validate_wpa_ie(ibss_rsn
->auth_group
, peer
->auth
,
456 (u8
*) "\x30\x14\x01\x00"
458 "\x01\x00\x00\x0f\xac\x04"
459 "\x01\x00\x00\x0f\xac\x02"
460 "\x00\x00", 22, NULL
, 0) !=
462 wpa_printf(MSG_DEBUG
, "AUTH: wpa_validate_wpa_ie() failed");
466 if (wpa_auth_sm_event(peer
->auth
, WPA_ASSOC
))
469 if (wpa_auth_sta_associated(ibss_rsn
->auth_group
, peer
->auth
))
476 static int ibss_rsn_send_auth(struct ibss_rsn
*ibss_rsn
, const u8
*da
, int seq
)
478 struct ieee80211_mgmt auth
;
479 const size_t auth_length
= IEEE80211_HDRLEN
+ sizeof(auth
.u
.auth
);
480 struct wpa_supplicant
*wpa_s
= ibss_rsn
->wpa_s
;
482 if (wpa_s
->driver
->send_frame
== NULL
)
485 os_memset(&auth
, 0, sizeof(auth
));
487 auth
.frame_control
= IEEE80211_FC(WLAN_FC_TYPE_MGMT
,
489 os_memcpy(auth
.da
, da
, ETH_ALEN
);
490 os_memcpy(auth
.sa
, wpa_s
->own_addr
, ETH_ALEN
);
491 os_memcpy(auth
.bssid
, wpa_s
->bssid
, ETH_ALEN
);
493 auth
.u
.auth
.auth_alg
= host_to_le16(WLAN_AUTH_OPEN
);
494 auth
.u
.auth
.auth_transaction
= host_to_le16(seq
);
495 auth
.u
.auth
.status_code
= host_to_le16(WLAN_STATUS_SUCCESS
);
497 wpa_printf(MSG_DEBUG
, "RSN: IBSS TX Auth frame (SEQ %d) to " MACSTR
,
500 return wpa_s
->driver
->send_frame(wpa_s
->drv_priv
, (u8
*) &auth
,
505 static int ibss_rsn_is_auth_started(struct ibss_rsn_peer
* peer
)
507 return peer
->authentication_status
&
508 (IBSS_RSN_AUTH_BY_US
| IBSS_RSN_AUTH_EAPOL_BY_US
);
512 static struct ibss_rsn_peer
*
513 ibss_rsn_peer_init(struct ibss_rsn
*ibss_rsn
, const u8
*addr
)
515 struct ibss_rsn_peer
*peer
;
516 if (ibss_rsn
== NULL
)
519 peer
= ibss_rsn_get_peer(ibss_rsn
, addr
);
521 wpa_printf(MSG_DEBUG
, "RSN: IBSS Supplicant for peer "MACSTR
522 " already running", MAC2STR(addr
));
526 wpa_printf(MSG_DEBUG
, "RSN: Starting IBSS Supplicant for peer "MACSTR
,
529 peer
= os_zalloc(sizeof(*peer
));
531 wpa_printf(MSG_DEBUG
, "RSN: Could not allocate memory.");
535 peer
->ibss_rsn
= ibss_rsn
;
536 os_memcpy(peer
->addr
, addr
, ETH_ALEN
);
537 peer
->authentication_status
= IBSS_RSN_AUTH_NOT_AUTHENTICATED
;
539 if (ibss_rsn_supp_init(peer
, ibss_rsn
->wpa_s
->own_addr
,
540 ibss_rsn
->psk
) < 0) {
545 peer
->next
= ibss_rsn
->peers
;
546 ibss_rsn
->peers
= peer
;
552 static void ibss_rsn_auth_timeout(void *eloop_ctx
, void *timeout_ctx
)
554 struct ibss_rsn_peer
*peer
= eloop_ctx
;
557 * Assume peer does not support Authentication exchange or the frame was
558 * lost somewhere - start EAPOL Authenticator.
560 wpa_printf(MSG_DEBUG
,
561 "RSN: Timeout on waiting Authentication frame response from "
562 MACSTR
" - start authenticator", MAC2STR(peer
->addr
));
564 peer
->authentication_status
|= IBSS_RSN_AUTH_BY_US
;
565 ibss_rsn_auth_init(peer
->ibss_rsn
, peer
);
569 int ibss_rsn_start(struct ibss_rsn
*ibss_rsn
, const u8
*addr
)
571 struct ibss_rsn_peer
*peer
;
574 /* if the peer already exists, exit immediately */
575 peer
= ibss_rsn_get_peer(ibss_rsn
, addr
);
579 peer
= ibss_rsn_peer_init(ibss_rsn
, addr
);
583 /* Open Authentication: send first Authentication frame */
584 res
= ibss_rsn_send_auth(ibss_rsn
, addr
, 1);
587 * The driver may not support Authentication frame exchange in
588 * IBSS. Ignore authentication and go through EAPOL exchange.
590 peer
->authentication_status
|= IBSS_RSN_AUTH_BY_US
;
591 return ibss_rsn_auth_init(ibss_rsn
, peer
);
593 os_get_reltime(&peer
->own_auth_tx
);
594 eloop_register_timeout(1, 0, ibss_rsn_auth_timeout
, peer
, NULL
);
601 static int ibss_rsn_peer_authenticated(struct ibss_rsn
*ibss_rsn
,
602 struct ibss_rsn_peer
*peer
, int reason
)
606 if (ibss_rsn
== NULL
|| peer
== NULL
)
609 already_started
= ibss_rsn_is_auth_started(peer
);
610 peer
->authentication_status
|= reason
;
612 if (already_started
) {
613 wpa_printf(MSG_DEBUG
, "RSN: IBSS Authenticator already "
614 "started for peer " MACSTR
, MAC2STR(peer
->addr
));
618 wpa_printf(MSG_DEBUG
, "RSN: Starting IBSS Authenticator "
619 "for now-authenticated peer " MACSTR
, MAC2STR(peer
->addr
));
621 return ibss_rsn_auth_init(ibss_rsn
, peer
);
625 void ibss_rsn_stop(struct ibss_rsn
*ibss_rsn
, const u8
*peermac
)
627 struct ibss_rsn_peer
*peer
, *prev
;
629 if (ibss_rsn
== NULL
)
632 if (peermac
== NULL
) {
633 /* remove all peers */
634 wpa_printf(MSG_DEBUG
, "%s: Remove all peers", __func__
);
635 peer
= ibss_rsn
->peers
;
640 ibss_rsn
->peers
= peer
;
643 /* remove specific peer */
644 wpa_printf(MSG_DEBUG
, "%s: Remove specific peer " MACSTR
,
645 __func__
, MAC2STR(peermac
));
647 for (prev
= NULL
, peer
= ibss_rsn
->peers
; peer
!= NULL
;
648 prev
= peer
, peer
= peer
->next
) {
649 if (os_memcmp(peermac
, peer
->addr
, ETH_ALEN
) == 0) {
651 ibss_rsn
->peers
= peer
->next
;
653 prev
->next
= peer
->next
;
655 wpa_printf(MSG_DEBUG
, "%s: Successfully "
656 "removed a specific peer",
665 struct ibss_rsn
* ibss_rsn_init(struct wpa_supplicant
*wpa_s
)
667 struct ibss_rsn
*ibss_rsn
;
669 ibss_rsn
= os_zalloc(sizeof(*ibss_rsn
));
670 if (ibss_rsn
== NULL
)
672 ibss_rsn
->wpa_s
= wpa_s
;
674 if (ibss_rsn_auth_init_group(ibss_rsn
, wpa_s
->own_addr
) < 0) {
675 ibss_rsn_deinit(ibss_rsn
);
683 void ibss_rsn_deinit(struct ibss_rsn
*ibss_rsn
)
685 struct ibss_rsn_peer
*peer
, *prev
;
687 if (ibss_rsn
== NULL
)
690 peer
= ibss_rsn
->peers
;
697 wpa_deinit(ibss_rsn
->auth_group
);
703 static int ibss_rsn_eapol_dst_supp(const u8
*buf
, size_t len
)
705 const struct ieee802_1x_hdr
*hdr
;
706 const struct wpa_eapol_key
*key
;
710 /* TODO: Support other EAPOL packets than just EAPOL-Key */
712 if (len
< sizeof(*hdr
) + sizeof(*key
))
715 hdr
= (const struct ieee802_1x_hdr
*) buf
;
716 key
= (const struct wpa_eapol_key
*) (hdr
+ 1);
717 plen
= be_to_host16(hdr
->length
);
719 if (hdr
->version
< EAPOL_VERSION
) {
720 /* TODO: backwards compatibility */
722 if (hdr
->type
!= IEEE802_1X_TYPE_EAPOL_KEY
) {
723 wpa_printf(MSG_DEBUG
, "RSN: EAPOL frame (type %u) discarded, "
724 "not a Key frame", hdr
->type
);
727 if (plen
> len
- sizeof(*hdr
) || plen
< sizeof(*key
)) {
728 wpa_printf(MSG_DEBUG
, "RSN: EAPOL frame payload size %lu "
729 "invalid (frame size %lu)",
730 (unsigned long) plen
, (unsigned long) len
);
734 if (key
->type
!= EAPOL_KEY_TYPE_RSN
) {
735 wpa_printf(MSG_DEBUG
, "RSN: EAPOL-Key type (%d) unknown, "
736 "discarded", key
->type
);
740 key_info
= WPA_GET_BE16(key
->key_info
);
742 return !!(key_info
& WPA_KEY_INFO_ACK
);
746 static int ibss_rsn_process_rx_eapol(struct ibss_rsn
*ibss_rsn
,
747 struct ibss_rsn_peer
*peer
,
748 const u8
*buf
, size_t len
)
753 supp
= ibss_rsn_eapol_dst_supp(buf
, len
);
757 tmp
= os_malloc(len
);
760 os_memcpy(tmp
, buf
, len
);
762 peer
->authentication_status
|= IBSS_RSN_AUTH_EAPOL_BY_PEER
;
763 wpa_printf(MSG_DEBUG
, "RSN: IBSS RX EAPOL for Supplicant from "
764 MACSTR
, MAC2STR(peer
->addr
));
765 wpa_sm_rx_eapol(peer
->supp
, peer
->addr
, tmp
, len
);
767 if (ibss_rsn_is_auth_started(peer
) == 0) {
768 wpa_printf(MSG_DEBUG
, "RSN: IBSS EAPOL for "
769 "Authenticator dropped as " MACSTR
" is not "
770 "authenticated", MAC2STR(peer
->addr
));
775 wpa_printf(MSG_DEBUG
, "RSN: IBSS RX EAPOL for Authenticator "
776 "from "MACSTR
, MAC2STR(peer
->addr
));
777 wpa_receive(ibss_rsn
->auth_group
, peer
->auth
, tmp
, len
);
785 int ibss_rsn_rx_eapol(struct ibss_rsn
*ibss_rsn
, const u8
*src_addr
,
786 const u8
*buf
, size_t len
)
788 struct ibss_rsn_peer
*peer
;
790 if (ibss_rsn
== NULL
)
793 peer
= ibss_rsn_get_peer(ibss_rsn
, src_addr
);
795 return ibss_rsn_process_rx_eapol(ibss_rsn
, peer
, buf
, len
);
797 if (ibss_rsn_eapol_dst_supp(buf
, len
) > 0) {
799 * Create new IBSS peer based on an EAPOL message from the peer
802 peer
= ibss_rsn_peer_init(ibss_rsn
, src_addr
);
806 /* assume the peer is authenticated already */
807 wpa_printf(MSG_DEBUG
, "RSN: IBSS Not using IBSS Auth for peer "
808 MACSTR
, MAC2STR(src_addr
));
809 ibss_rsn_peer_authenticated(ibss_rsn
, peer
,
810 IBSS_RSN_AUTH_EAPOL_BY_US
);
812 return ibss_rsn_process_rx_eapol(ibss_rsn
, ibss_rsn
->peers
,
819 void ibss_rsn_set_psk(struct ibss_rsn
*ibss_rsn
, const u8
*psk
)
821 if (ibss_rsn
== NULL
)
823 os_memcpy(ibss_rsn
->psk
, psk
, PMK_LEN
);
827 static void ibss_rsn_handle_auth_1_of_2(struct ibss_rsn
*ibss_rsn
,
828 struct ibss_rsn_peer
*peer
,
831 wpa_printf(MSG_DEBUG
, "RSN: IBSS RX Auth frame (SEQ 1) from " MACSTR
,
835 peer
->authentication_status
& IBSS_RSN_AUTH_EAPOL_BY_PEER
) {
836 if (peer
->own_auth_tx
.sec
) {
837 struct os_reltime now
, diff
;
838 os_get_reltime(&now
);
839 os_reltime_sub(&now
, &peer
->own_auth_tx
, &diff
);
840 if (diff
.sec
== 0 && diff
.usec
< 500000) {
841 wpa_printf(MSG_DEBUG
, "RSN: Skip IBSS reinit since only %u usec from own Auth frame TX",
847 * A peer sent us an Authentication frame even though it already
848 * started an EAPOL session. We should reinit state machines
849 * here, but it's much more complicated than just deleting and
850 * recreating the state machine
852 wpa_printf(MSG_DEBUG
, "RSN: IBSS Reinitializing station "
853 MACSTR
, MAC2STR(addr
));
855 ibss_rsn_stop(ibss_rsn
, addr
);
860 peer
= ibss_rsn_peer_init(ibss_rsn
, addr
);
864 wpa_printf(MSG_DEBUG
, "RSN: IBSS Auth started by peer " MACSTR
,
869 /* reply with an Authentication frame now, before sending an EAPOL */
870 ibss_rsn_send_auth(ibss_rsn
, addr
, 2);
871 /* no need to start another AUTH challenge in the other way.. */
872 ibss_rsn_peer_authenticated(ibss_rsn
, peer
, IBSS_RSN_AUTH_EAPOL_BY_US
);
876 void ibss_rsn_handle_auth(struct ibss_rsn
*ibss_rsn
, const u8
*auth_frame
,
879 const struct ieee80211_mgmt
*header
;
880 struct ibss_rsn_peer
*peer
;
883 header
= (const struct ieee80211_mgmt
*) auth_frame
;
884 auth_length
= IEEE80211_HDRLEN
+ sizeof(header
->u
.auth
);
886 if (ibss_rsn
== NULL
|| len
< auth_length
)
889 if (le_to_host16(header
->u
.auth
.auth_alg
) != WLAN_AUTH_OPEN
||
890 le_to_host16(header
->u
.auth
.status_code
) != WLAN_STATUS_SUCCESS
)
893 peer
= ibss_rsn_get_peer(ibss_rsn
, header
->sa
);
895 switch (le_to_host16(header
->u
.auth
.auth_transaction
)) {
897 ibss_rsn_handle_auth_1_of_2(ibss_rsn
, peer
, header
->sa
);
900 wpa_printf(MSG_DEBUG
, "RSN: IBSS RX Auth frame (SEQ 2) from "
901 MACSTR
, MAC2STR(header
->sa
));
903 wpa_printf(MSG_DEBUG
, "RSN: Received Auth seq 2 from "
904 "unknown STA " MACSTR
, MAC2STR(header
->sa
));
908 /* authentication has been completed */
909 eloop_cancel_timeout(ibss_rsn_auth_timeout
, peer
, NULL
);
910 wpa_printf(MSG_DEBUG
, "RSN: IBSS Auth completed with " MACSTR
,
911 MAC2STR(header
->sa
));
912 ibss_rsn_peer_authenticated(ibss_rsn
, peer
,
913 IBSS_RSN_AUTH_BY_US
);