2 * hostapd / WPA authenticator glue code
3 * Copyright (c) 2002-2011, 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.
15 #include "utils/includes.h"
17 #include "utils/common.h"
18 #include "common/ieee802_11_defs.h"
19 #include "eapol_auth/eapol_auth_sm.h"
20 #include "eapol_auth/eapol_auth_sm_i.h"
21 #include "eap_server/eap.h"
22 #include "l2_packet/l2_packet.h"
23 #include "drivers/driver.h"
25 #include "ieee802_1x.h"
26 #include "preauth_auth.h"
28 #include "tkip_countermeasures.h"
29 #include "ap_drv_ops.h"
30 #include "ap_config.h"
32 #include "wpa_auth_glue.h"
35 static void hostapd_wpa_auth_conf(struct hostapd_bss_config
*conf
,
36 struct wpa_auth_config
*wconf
)
38 os_memset(wconf
, 0, sizeof(*wconf
));
39 wconf
->wpa
= conf
->wpa
;
40 wconf
->wpa_key_mgmt
= conf
->wpa_key_mgmt
;
41 wconf
->wpa_pairwise
= conf
->wpa_pairwise
;
42 wconf
->wpa_group
= conf
->wpa_group
;
43 wconf
->wpa_group_rekey
= conf
->wpa_group_rekey
;
44 wconf
->wpa_strict_rekey
= conf
->wpa_strict_rekey
;
45 wconf
->wpa_gmk_rekey
= conf
->wpa_gmk_rekey
;
46 wconf
->wpa_ptk_rekey
= conf
->wpa_ptk_rekey
;
47 wconf
->rsn_pairwise
= conf
->rsn_pairwise
;
48 wconf
->rsn_preauth
= conf
->rsn_preauth
;
49 wconf
->eapol_version
= conf
->eapol_version
;
50 wconf
->peerkey
= conf
->peerkey
;
51 wconf
->wmm_enabled
= conf
->wmm_enabled
;
52 wconf
->wmm_uapsd
= conf
->wmm_uapsd
;
53 wconf
->disable_pmksa_caching
= conf
->disable_pmksa_caching
;
54 wconf
->okc
= conf
->okc
;
55 #ifdef CONFIG_IEEE80211W
56 wconf
->ieee80211w
= conf
->ieee80211w
;
57 #endif /* CONFIG_IEEE80211W */
58 #ifdef CONFIG_IEEE80211R
59 wconf
->ssid_len
= conf
->ssid
.ssid_len
;
60 if (wconf
->ssid_len
> SSID_LEN
)
61 wconf
->ssid_len
= SSID_LEN
;
62 os_memcpy(wconf
->ssid
, conf
->ssid
.ssid
, wconf
->ssid_len
);
63 os_memcpy(wconf
->mobility_domain
, conf
->mobility_domain
,
64 MOBILITY_DOMAIN_ID_LEN
);
65 if (conf
->nas_identifier
&&
66 os_strlen(conf
->nas_identifier
) <= FT_R0KH_ID_MAX_LEN
) {
67 wconf
->r0_key_holder_len
= os_strlen(conf
->nas_identifier
);
68 os_memcpy(wconf
->r0_key_holder
, conf
->nas_identifier
,
69 wconf
->r0_key_holder_len
);
71 os_memcpy(wconf
->r1_key_holder
, conf
->r1_key_holder
, FT_R1KH_ID_LEN
);
72 wconf
->r0_key_lifetime
= conf
->r0_key_lifetime
;
73 wconf
->reassociation_deadline
= conf
->reassociation_deadline
;
74 wconf
->r0kh_list
= conf
->r0kh_list
;
75 wconf
->r1kh_list
= conf
->r1kh_list
;
76 wconf
->pmk_r1_push
= conf
->pmk_r1_push
;
77 wconf
->ft_over_ds
= conf
->ft_over_ds
;
78 #endif /* CONFIG_IEEE80211R */
82 static void hostapd_wpa_auth_logger(void *ctx
, const u8
*addr
,
83 logger_level level
, const char *txt
)
85 #ifndef CONFIG_NO_HOSTAPD_LOGGER
86 struct hostapd_data
*hapd
= ctx
;
91 hlevel
= HOSTAPD_LEVEL_WARNING
;
94 hlevel
= HOSTAPD_LEVEL_INFO
;
98 hlevel
= HOSTAPD_LEVEL_DEBUG
;
102 hostapd_logger(hapd
, addr
, HOSTAPD_MODULE_WPA
, hlevel
, "%s", txt
);
103 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
107 static void hostapd_wpa_auth_disconnect(void *ctx
, const u8
*addr
,
110 struct hostapd_data
*hapd
= ctx
;
111 wpa_printf(MSG_DEBUG
, "%s: WPA authenticator requests disconnect: "
112 "STA " MACSTR
" reason %d",
113 __func__
, MAC2STR(addr
), reason
);
114 ap_sta_disconnect(hapd
, NULL
, addr
, reason
);
118 static void hostapd_wpa_auth_mic_failure_report(void *ctx
, const u8
*addr
)
120 struct hostapd_data
*hapd
= ctx
;
121 michael_mic_failure(hapd
, addr
, 0);
125 static void hostapd_wpa_auth_set_eapol(void *ctx
, const u8
*addr
,
126 wpa_eapol_variable var
, int value
)
128 struct hostapd_data
*hapd
= ctx
;
129 struct sta_info
*sta
= ap_get_sta(hapd
, addr
);
133 case WPA_EAPOL_portEnabled
:
134 ieee802_1x_notify_port_enabled(sta
->eapol_sm
, value
);
136 case WPA_EAPOL_portValid
:
137 ieee802_1x_notify_port_valid(sta
->eapol_sm
, value
);
139 case WPA_EAPOL_authorized
:
140 ieee802_1x_set_sta_authorized(hapd
, sta
, value
);
142 case WPA_EAPOL_portControl_Auto
:
144 sta
->eapol_sm
->portControl
= Auto
;
146 case WPA_EAPOL_keyRun
:
148 sta
->eapol_sm
->keyRun
= value
? TRUE
: FALSE
;
150 case WPA_EAPOL_keyAvailable
:
152 sta
->eapol_sm
->eap_if
->eapKeyAvailable
=
153 value
? TRUE
: FALSE
;
155 case WPA_EAPOL_keyDone
:
157 sta
->eapol_sm
->keyDone
= value
? TRUE
: FALSE
;
159 case WPA_EAPOL_inc_EapolFramesTx
:
161 sta
->eapol_sm
->dot1xAuthEapolFramesTx
++;
167 static int hostapd_wpa_auth_get_eapol(void *ctx
, const u8
*addr
,
168 wpa_eapol_variable var
)
170 struct hostapd_data
*hapd
= ctx
;
171 struct sta_info
*sta
= ap_get_sta(hapd
, addr
);
172 if (sta
== NULL
|| sta
->eapol_sm
== NULL
)
175 case WPA_EAPOL_keyRun
:
176 return sta
->eapol_sm
->keyRun
;
177 case WPA_EAPOL_keyAvailable
:
178 return sta
->eapol_sm
->eap_if
->eapKeyAvailable
;
185 static const u8
* hostapd_wpa_auth_get_psk(void *ctx
, const u8
*addr
,
188 struct hostapd_data
*hapd
= ctx
;
189 return hostapd_get_psk(hapd
->conf
, addr
, prev_psk
);
193 static int hostapd_wpa_auth_get_msk(void *ctx
, const u8
*addr
, u8
*msk
,
196 struct hostapd_data
*hapd
= ctx
;
199 struct sta_info
*sta
;
201 sta
= ap_get_sta(hapd
, addr
);
205 key
= ieee802_1x_get_key(sta
->eapol_sm
, &keylen
);
211 os_memcpy(msk
, key
, keylen
);
218 static int hostapd_wpa_auth_set_key(void *ctx
, int vlan_id
, enum wpa_alg alg
,
219 const u8
*addr
, int idx
, u8
*key
,
222 struct hostapd_data
*hapd
= ctx
;
223 const char *ifname
= hapd
->conf
->iface
;
226 ifname
= hostapd_get_vlan_id_ifname(hapd
->conf
->vlan
, vlan_id
);
231 return hostapd_drv_set_key(ifname
, hapd
, alg
, addr
, idx
, 1, NULL
, 0,
236 static int hostapd_wpa_auth_get_seqnum(void *ctx
, const u8
*addr
, int idx
,
239 struct hostapd_data
*hapd
= ctx
;
240 return hostapd_get_seqnum(hapd
->conf
->iface
, hapd
, addr
, idx
, seq
);
244 static int hostapd_wpa_auth_send_eapol(void *ctx
, const u8
*addr
,
245 const u8
*data
, size_t data_len
,
248 struct hostapd_data
*hapd
= ctx
;
249 struct sta_info
*sta
;
252 sta
= ap_get_sta(hapd
, addr
);
254 flags
= hostapd_sta_flags_to_drv(sta
->flags
);
256 return hostapd_drv_hapd_send_eapol(hapd
, addr
, data
, data_len
,
261 static int hostapd_wpa_auth_for_each_sta(
262 void *ctx
, int (*cb
)(struct wpa_state_machine
*sm
, void *ctx
),
265 struct hostapd_data
*hapd
= ctx
;
266 struct sta_info
*sta
;
268 for (sta
= hapd
->sta_list
; sta
; sta
= sta
->next
) {
269 if (sta
->wpa_sm
&& cb(sta
->wpa_sm
, cb_ctx
))
276 struct wpa_auth_iface_iter_data
{
277 int (*cb
)(struct wpa_authenticator
*sm
, void *ctx
);
281 static int wpa_auth_iface_iter(struct hostapd_iface
*iface
, void *ctx
)
283 struct wpa_auth_iface_iter_data
*data
= ctx
;
285 for (i
= 0; i
< iface
->num_bss
; i
++) {
286 if (iface
->bss
[i
]->wpa_auth
&&
287 data
->cb(iface
->bss
[i
]->wpa_auth
, data
->cb_ctx
))
294 static int hostapd_wpa_auth_for_each_auth(
295 void *ctx
, int (*cb
)(struct wpa_authenticator
*sm
, void *ctx
),
298 struct hostapd_data
*hapd
= ctx
;
299 struct wpa_auth_iface_iter_data data
;
300 if (hapd
->iface
->for_each_interface
== NULL
)
303 data
.cb_ctx
= cb_ctx
;
304 return hapd
->iface
->for_each_interface(hapd
->iface
->interfaces
,
305 wpa_auth_iface_iter
, &data
);
309 #ifdef CONFIG_IEEE80211R
311 struct wpa_auth_ft_iface_iter_data
{
312 struct hostapd_data
*src_hapd
;
319 static int hostapd_wpa_auth_ft_iter(struct hostapd_iface
*iface
, void *ctx
)
321 struct wpa_auth_ft_iface_iter_data
*idata
= ctx
;
322 struct hostapd_data
*hapd
;
325 for (j
= 0; j
< iface
->num_bss
; j
++) {
326 hapd
= iface
->bss
[j
];
327 if (hapd
== idata
->src_hapd
)
329 if (os_memcmp(hapd
->own_addr
, idata
->dst
, ETH_ALEN
) == 0) {
330 wpa_printf(MSG_DEBUG
, "FT: Send RRB data directly to "
331 "locally managed BSS " MACSTR
"@%s -> "
333 MAC2STR(idata
->src_hapd
->own_addr
),
334 idata
->src_hapd
->conf
->iface
,
335 MAC2STR(hapd
->own_addr
), hapd
->conf
->iface
);
336 wpa_ft_rrb_rx(hapd
->wpa_auth
,
337 idata
->src_hapd
->own_addr
,
338 idata
->data
, idata
->data_len
);
346 #endif /* CONFIG_IEEE80211R */
349 static int hostapd_wpa_auth_send_ether(void *ctx
, const u8
*dst
, u16 proto
,
350 const u8
*data
, size_t data_len
)
352 struct hostapd_data
*hapd
= ctx
;
353 struct l2_ethhdr
*buf
;
356 #ifdef CONFIG_IEEE80211R
357 if (proto
== ETH_P_RRB
&& hapd
->iface
->for_each_interface
) {
359 struct wpa_auth_ft_iface_iter_data idata
;
360 idata
.src_hapd
= hapd
;
363 idata
.data_len
= data_len
;
364 res
= hapd
->iface
->for_each_interface(hapd
->iface
->interfaces
,
365 hostapd_wpa_auth_ft_iter
,
370 #endif /* CONFIG_IEEE80211R */
372 if (hapd
->driver
&& hapd
->driver
->send_ether
)
373 return hapd
->driver
->send_ether(hapd
->drv_priv
, dst
,
374 hapd
->own_addr
, proto
,
376 if (hapd
->l2
== NULL
)
379 buf
= os_malloc(sizeof(*buf
) + data_len
);
382 os_memcpy(buf
->h_dest
, dst
, ETH_ALEN
);
383 os_memcpy(buf
->h_source
, hapd
->own_addr
, ETH_ALEN
);
384 buf
->h_proto
= host_to_be16(proto
);
385 os_memcpy(buf
+ 1, data
, data_len
);
386 ret
= l2_packet_send(hapd
->l2
, dst
, proto
, (u8
*) buf
,
387 sizeof(*buf
) + data_len
);
393 #ifdef CONFIG_IEEE80211R
395 static int hostapd_wpa_auth_send_ft_action(void *ctx
, const u8
*dst
,
396 const u8
*data
, size_t data_len
)
398 struct hostapd_data
*hapd
= ctx
;
400 struct ieee80211_mgmt
*m
;
402 struct sta_info
*sta
;
404 sta
= ap_get_sta(hapd
, dst
);
405 if (sta
== NULL
|| sta
->wpa_sm
== NULL
)
408 m
= os_zalloc(sizeof(*m
) + data_len
);
411 mlen
= ((u8
*) &m
->u
- (u8
*) m
) + data_len
;
412 m
->frame_control
= IEEE80211_FC(WLAN_FC_TYPE_MGMT
,
413 WLAN_FC_STYPE_ACTION
);
414 os_memcpy(m
->da
, dst
, ETH_ALEN
);
415 os_memcpy(m
->sa
, hapd
->own_addr
, ETH_ALEN
);
416 os_memcpy(m
->bssid
, hapd
->own_addr
, ETH_ALEN
);
417 os_memcpy(&m
->u
, data
, data_len
);
419 res
= hostapd_drv_send_mlme(hapd
, (u8
*) m
, mlen
, 0);
425 static struct wpa_state_machine
*
426 hostapd_wpa_auth_add_sta(void *ctx
, const u8
*sta_addr
)
428 struct hostapd_data
*hapd
= ctx
;
429 struct sta_info
*sta
;
431 sta
= ap_sta_add(hapd
, sta_addr
);
435 sta
->auth_alg
= WLAN_AUTH_FT
;
439 sta
->wpa_sm
= wpa_auth_sta_init(hapd
->wpa_auth
, sta
->addr
);
440 if (sta
->wpa_sm
== NULL
) {
441 ap_free_sta(hapd
, sta
);
444 sta
->auth_alg
= WLAN_AUTH_FT
;
450 static void hostapd_rrb_receive(void *ctx
, const u8
*src_addr
, const u8
*buf
,
453 struct hostapd_data
*hapd
= ctx
;
454 struct l2_ethhdr
*ethhdr
;
455 if (len
< sizeof(*ethhdr
))
457 ethhdr
= (struct l2_ethhdr
*) buf
;
458 wpa_printf(MSG_DEBUG
, "FT: RRB received packet " MACSTR
" -> "
459 MACSTR
, MAC2STR(ethhdr
->h_source
), MAC2STR(ethhdr
->h_dest
));
460 wpa_ft_rrb_rx(hapd
->wpa_auth
, ethhdr
->h_source
, buf
+ sizeof(*ethhdr
),
461 len
- sizeof(*ethhdr
));
464 #endif /* CONFIG_IEEE80211R */
467 int hostapd_setup_wpa(struct hostapd_data
*hapd
)
469 struct wpa_auth_config _conf
;
470 struct wpa_auth_callbacks cb
;
474 hostapd_wpa_auth_conf(hapd
->conf
, &_conf
);
475 if (hapd
->iface
->drv_flags
& WPA_DRIVER_FLAGS_EAPOL_TX_STATUS
)
477 os_memset(&cb
, 0, sizeof(cb
));
479 cb
.logger
= hostapd_wpa_auth_logger
;
480 cb
.disconnect
= hostapd_wpa_auth_disconnect
;
481 cb
.mic_failure_report
= hostapd_wpa_auth_mic_failure_report
;
482 cb
.set_eapol
= hostapd_wpa_auth_set_eapol
;
483 cb
.get_eapol
= hostapd_wpa_auth_get_eapol
;
484 cb
.get_psk
= hostapd_wpa_auth_get_psk
;
485 cb
.get_msk
= hostapd_wpa_auth_get_msk
;
486 cb
.set_key
= hostapd_wpa_auth_set_key
;
487 cb
.get_seqnum
= hostapd_wpa_auth_get_seqnum
;
488 cb
.send_eapol
= hostapd_wpa_auth_send_eapol
;
489 cb
.for_each_sta
= hostapd_wpa_auth_for_each_sta
;
490 cb
.for_each_auth
= hostapd_wpa_auth_for_each_auth
;
491 cb
.send_ether
= hostapd_wpa_auth_send_ether
;
492 #ifdef CONFIG_IEEE80211R
493 cb
.send_ft_action
= hostapd_wpa_auth_send_ft_action
;
494 cb
.add_sta
= hostapd_wpa_auth_add_sta
;
495 #endif /* CONFIG_IEEE80211R */
496 hapd
->wpa_auth
= wpa_init(hapd
->own_addr
, &_conf
, &cb
);
497 if (hapd
->wpa_auth
== NULL
) {
498 wpa_printf(MSG_ERROR
, "WPA initialization failed.");
502 if (hostapd_set_privacy(hapd
, 1)) {
503 wpa_printf(MSG_ERROR
, "Could not set PrivacyInvoked "
504 "for interface %s", hapd
->conf
->iface
);
508 wpa_ie
= wpa_auth_get_wpa_ie(hapd
->wpa_auth
, &wpa_ie_len
);
509 if (hostapd_set_generic_elem(hapd
, wpa_ie
, wpa_ie_len
)) {
510 wpa_printf(MSG_ERROR
, "Failed to configure WPA IE for "
511 "the kernel driver.");
515 if (rsn_preauth_iface_init(hapd
)) {
516 wpa_printf(MSG_ERROR
, "Initialization of RSN "
517 "pre-authentication failed.");
521 #ifdef CONFIG_IEEE80211R
522 if (!hostapd_drv_none(hapd
)) {
523 hapd
->l2
= l2_packet_init(hapd
->conf
->bridge
[0] ?
525 hapd
->conf
->iface
, NULL
, ETH_P_RRB
,
526 hostapd_rrb_receive
, hapd
, 1);
527 if (hapd
->l2
== NULL
&&
528 (hapd
->driver
== NULL
||
529 hapd
->driver
->send_ether
== NULL
)) {
530 wpa_printf(MSG_ERROR
, "Failed to open l2_packet "
535 #endif /* CONFIG_IEEE80211R */
542 void hostapd_reconfig_wpa(struct hostapd_data
*hapd
)
544 struct wpa_auth_config wpa_auth_conf
;
545 hostapd_wpa_auth_conf(hapd
->conf
, &wpa_auth_conf
);
546 wpa_reconfig(hapd
->wpa_auth
, &wpa_auth_conf
);
550 void hostapd_deinit_wpa(struct hostapd_data
*hapd
)
552 ieee80211_tkip_countermeasures_deinit(hapd
);
553 rsn_preauth_iface_deinit(hapd
);
554 if (hapd
->wpa_auth
) {
555 wpa_deinit(hapd
->wpa_auth
);
556 hapd
->wpa_auth
= NULL
;
558 if (hostapd_set_privacy(hapd
, 0)) {
559 wpa_printf(MSG_DEBUG
, "Could not disable "
560 "PrivacyInvoked for interface %s",
564 if (hostapd_set_generic_elem(hapd
, (u8
*) "", 0)) {
565 wpa_printf(MSG_DEBUG
, "Could not remove generic "
566 "information element from interface %s",
570 ieee802_1x_deinit(hapd
);
572 #ifdef CONFIG_IEEE80211R
573 l2_packet_deinit(hapd
->l2
);
574 #endif /* CONFIG_IEEE80211R */