2 * hostapd / WPA authenticator glue code
3 * Copyright (c) 2002-2012, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
11 #include "utils/common.h"
12 #include "common/ieee802_11_defs.h"
13 #include "common/sae.h"
14 #include "eapol_auth/eapol_auth_sm.h"
15 #include "eapol_auth/eapol_auth_sm_i.h"
16 #include "eap_server/eap.h"
17 #include "l2_packet/l2_packet.h"
18 #include "drivers/driver.h"
20 #include "ieee802_1x.h"
21 #include "preauth_auth.h"
23 #include "tkip_countermeasures.h"
24 #include "ap_drv_ops.h"
25 #include "ap_config.h"
27 #include "wpa_auth_glue.h"
30 static void hostapd_wpa_auth_conf(struct hostapd_bss_config
*conf
,
31 struct hostapd_config
*iconf
,
32 struct wpa_auth_config
*wconf
)
34 os_memset(wconf
, 0, sizeof(*wconf
));
35 wconf
->wpa
= conf
->wpa
;
36 wconf
->wpa_key_mgmt
= conf
->wpa_key_mgmt
;
37 wconf
->wpa_pairwise
= conf
->wpa_pairwise
;
38 wconf
->wpa_group
= conf
->wpa_group
;
39 wconf
->wpa_group_rekey
= conf
->wpa_group_rekey
;
40 wconf
->wpa_strict_rekey
= conf
->wpa_strict_rekey
;
41 wconf
->wpa_gmk_rekey
= conf
->wpa_gmk_rekey
;
42 wconf
->wpa_ptk_rekey
= conf
->wpa_ptk_rekey
;
43 wconf
->rsn_pairwise
= conf
->rsn_pairwise
;
44 wconf
->rsn_preauth
= conf
->rsn_preauth
;
45 wconf
->eapol_version
= conf
->eapol_version
;
46 wconf
->peerkey
= conf
->peerkey
;
47 wconf
->wmm_enabled
= conf
->wmm_enabled
;
48 wconf
->wmm_uapsd
= conf
->wmm_uapsd
;
49 wconf
->disable_pmksa_caching
= conf
->disable_pmksa_caching
;
50 wconf
->okc
= conf
->okc
;
51 #ifdef CONFIG_IEEE80211W
52 wconf
->ieee80211w
= conf
->ieee80211w
;
53 #endif /* CONFIG_IEEE80211W */
54 #ifdef CONFIG_IEEE80211R
55 wconf
->ssid_len
= conf
->ssid
.ssid_len
;
56 if (wconf
->ssid_len
> SSID_LEN
)
57 wconf
->ssid_len
= SSID_LEN
;
58 os_memcpy(wconf
->ssid
, conf
->ssid
.ssid
, wconf
->ssid_len
);
59 os_memcpy(wconf
->mobility_domain
, conf
->mobility_domain
,
60 MOBILITY_DOMAIN_ID_LEN
);
61 if (conf
->nas_identifier
&&
62 os_strlen(conf
->nas_identifier
) <= FT_R0KH_ID_MAX_LEN
) {
63 wconf
->r0_key_holder_len
= os_strlen(conf
->nas_identifier
);
64 os_memcpy(wconf
->r0_key_holder
, conf
->nas_identifier
,
65 wconf
->r0_key_holder_len
);
67 os_memcpy(wconf
->r1_key_holder
, conf
->r1_key_holder
, FT_R1KH_ID_LEN
);
68 wconf
->r0_key_lifetime
= conf
->r0_key_lifetime
;
69 wconf
->reassociation_deadline
= conf
->reassociation_deadline
;
70 wconf
->r0kh_list
= conf
->r0kh_list
;
71 wconf
->r1kh_list
= conf
->r1kh_list
;
72 wconf
->pmk_r1_push
= conf
->pmk_r1_push
;
73 wconf
->ft_over_ds
= conf
->ft_over_ds
;
74 #endif /* CONFIG_IEEE80211R */
76 wconf
->disable_gtk
= conf
->disable_dgaf
;
77 #endif /* CONFIG_HS20 */
78 #ifdef CONFIG_TESTING_OPTIONS
79 wconf
->corrupt_gtk_rekey_mic_probability
=
80 iconf
->corrupt_gtk_rekey_mic_probability
;
81 #endif /* CONFIG_TESTING_OPTIONS */
85 static void hostapd_wpa_auth_logger(void *ctx
, const u8
*addr
,
86 logger_level level
, const char *txt
)
88 #ifndef CONFIG_NO_HOSTAPD_LOGGER
89 struct hostapd_data
*hapd
= ctx
;
94 hlevel
= HOSTAPD_LEVEL_WARNING
;
97 hlevel
= HOSTAPD_LEVEL_INFO
;
101 hlevel
= HOSTAPD_LEVEL_DEBUG
;
105 hostapd_logger(hapd
, addr
, HOSTAPD_MODULE_WPA
, hlevel
, "%s", txt
);
106 #endif /* CONFIG_NO_HOSTAPD_LOGGER */
110 static void hostapd_wpa_auth_disconnect(void *ctx
, const u8
*addr
,
113 struct hostapd_data
*hapd
= ctx
;
114 wpa_printf(MSG_DEBUG
, "%s: WPA authenticator requests disconnect: "
115 "STA " MACSTR
" reason %d",
116 __func__
, MAC2STR(addr
), reason
);
117 ap_sta_disconnect(hapd
, NULL
, addr
, reason
);
121 static int hostapd_wpa_auth_mic_failure_report(void *ctx
, const u8
*addr
)
123 struct hostapd_data
*hapd
= ctx
;
124 return michael_mic_failure(hapd
, addr
, 0);
128 static void hostapd_wpa_auth_set_eapol(void *ctx
, const u8
*addr
,
129 wpa_eapol_variable var
, int value
)
131 struct hostapd_data
*hapd
= ctx
;
132 struct sta_info
*sta
= ap_get_sta(hapd
, addr
);
136 case WPA_EAPOL_portEnabled
:
137 ieee802_1x_notify_port_enabled(sta
->eapol_sm
, value
);
139 case WPA_EAPOL_portValid
:
140 ieee802_1x_notify_port_valid(sta
->eapol_sm
, value
);
142 case WPA_EAPOL_authorized
:
143 ieee802_1x_set_sta_authorized(hapd
, sta
, value
);
145 case WPA_EAPOL_portControl_Auto
:
147 sta
->eapol_sm
->portControl
= Auto
;
149 case WPA_EAPOL_keyRun
:
151 sta
->eapol_sm
->keyRun
= value
? TRUE
: FALSE
;
153 case WPA_EAPOL_keyAvailable
:
155 sta
->eapol_sm
->eap_if
->eapKeyAvailable
=
156 value
? TRUE
: FALSE
;
158 case WPA_EAPOL_keyDone
:
160 sta
->eapol_sm
->keyDone
= value
? TRUE
: FALSE
;
162 case WPA_EAPOL_inc_EapolFramesTx
:
164 sta
->eapol_sm
->dot1xAuthEapolFramesTx
++;
170 static int hostapd_wpa_auth_get_eapol(void *ctx
, const u8
*addr
,
171 wpa_eapol_variable var
)
173 struct hostapd_data
*hapd
= ctx
;
174 struct sta_info
*sta
= ap_get_sta(hapd
, addr
);
175 if (sta
== NULL
|| sta
->eapol_sm
== NULL
)
178 case WPA_EAPOL_keyRun
:
179 return sta
->eapol_sm
->keyRun
;
180 case WPA_EAPOL_keyAvailable
:
181 return sta
->eapol_sm
->eap_if
->eapKeyAvailable
;
188 static const u8
* hostapd_wpa_auth_get_psk(void *ctx
, const u8
*addr
,
191 struct hostapd_data
*hapd
= ctx
;
192 struct sta_info
*sta
= ap_get_sta(hapd
, addr
);
196 if (sta
&& sta
->auth_alg
== WLAN_AUTH_SAE
) {
197 if (!sta
->sae
|| prev_psk
)
199 return sta
->sae
->pmk
;
201 #endif /* CONFIG_SAE */
203 psk
= hostapd_get_psk(hapd
->conf
, addr
, prev_psk
);
205 * This is about to iterate over all psks, prev_psk gives the last
206 * returned psk which should not be returned again.
207 * logic list (all hostapd_get_psk; all sta->psk)
209 if (sta
&& sta
->psk
&& !psk
) {
210 struct hostapd_sta_wpa_psk_short
*pos
;
212 for (pos
= sta
->psk
; pos
; pos
= pos
->next
) {
213 if (pos
->psk
== prev_psk
) {
214 psk
= pos
->next
? pos
->next
->psk
: NULL
;
223 static int hostapd_wpa_auth_get_msk(void *ctx
, const u8
*addr
, u8
*msk
,
226 struct hostapd_data
*hapd
= ctx
;
229 struct sta_info
*sta
;
231 sta
= ap_get_sta(hapd
, addr
);
235 key
= ieee802_1x_get_key(sta
->eapol_sm
, &keylen
);
241 os_memcpy(msk
, key
, keylen
);
248 static int hostapd_wpa_auth_set_key(void *ctx
, int vlan_id
, enum wpa_alg alg
,
249 const u8
*addr
, int idx
, u8
*key
,
252 struct hostapd_data
*hapd
= ctx
;
253 const char *ifname
= hapd
->conf
->iface
;
256 ifname
= hostapd_get_vlan_id_ifname(hapd
->conf
->vlan
, vlan_id
);
261 return hostapd_drv_set_key(ifname
, hapd
, alg
, addr
, idx
, 1, NULL
, 0,
266 static int hostapd_wpa_auth_get_seqnum(void *ctx
, const u8
*addr
, int idx
,
269 struct hostapd_data
*hapd
= ctx
;
270 return hostapd_get_seqnum(hapd
->conf
->iface
, hapd
, addr
, idx
, seq
);
274 static int hostapd_wpa_auth_send_eapol(void *ctx
, const u8
*addr
,
275 const u8
*data
, size_t data_len
,
278 struct hostapd_data
*hapd
= ctx
;
279 struct sta_info
*sta
;
282 sta
= ap_get_sta(hapd
, addr
);
284 flags
= hostapd_sta_flags_to_drv(sta
->flags
);
286 return hostapd_drv_hapd_send_eapol(hapd
, addr
, data
, data_len
,
291 static int hostapd_wpa_auth_for_each_sta(
292 void *ctx
, int (*cb
)(struct wpa_state_machine
*sm
, void *ctx
),
295 struct hostapd_data
*hapd
= ctx
;
296 struct sta_info
*sta
;
298 for (sta
= hapd
->sta_list
; sta
; sta
= sta
->next
) {
299 if (sta
->wpa_sm
&& cb(sta
->wpa_sm
, cb_ctx
))
306 struct wpa_auth_iface_iter_data
{
307 int (*cb
)(struct wpa_authenticator
*sm
, void *ctx
);
311 static int wpa_auth_iface_iter(struct hostapd_iface
*iface
, void *ctx
)
313 struct wpa_auth_iface_iter_data
*data
= ctx
;
315 for (i
= 0; i
< iface
->num_bss
; i
++) {
316 if (iface
->bss
[i
]->wpa_auth
&&
317 data
->cb(iface
->bss
[i
]->wpa_auth
, data
->cb_ctx
))
324 static int hostapd_wpa_auth_for_each_auth(
325 void *ctx
, int (*cb
)(struct wpa_authenticator
*sm
, void *ctx
),
328 struct hostapd_data
*hapd
= ctx
;
329 struct wpa_auth_iface_iter_data data
;
330 if (hapd
->iface
->interfaces
== NULL
||
331 hapd
->iface
->interfaces
->for_each_interface
== NULL
)
334 data
.cb_ctx
= cb_ctx
;
335 return hapd
->iface
->interfaces
->for_each_interface(
336 hapd
->iface
->interfaces
, wpa_auth_iface_iter
, &data
);
340 #ifdef CONFIG_IEEE80211R
342 struct wpa_auth_ft_iface_iter_data
{
343 struct hostapd_data
*src_hapd
;
350 static int hostapd_wpa_auth_ft_iter(struct hostapd_iface
*iface
, void *ctx
)
352 struct wpa_auth_ft_iface_iter_data
*idata
= ctx
;
353 struct hostapd_data
*hapd
;
356 for (j
= 0; j
< iface
->num_bss
; j
++) {
357 hapd
= iface
->bss
[j
];
358 if (hapd
== idata
->src_hapd
)
360 if (os_memcmp(hapd
->own_addr
, idata
->dst
, ETH_ALEN
) == 0) {
361 wpa_printf(MSG_DEBUG
, "FT: Send RRB data directly to "
362 "locally managed BSS " MACSTR
"@%s -> "
364 MAC2STR(idata
->src_hapd
->own_addr
),
365 idata
->src_hapd
->conf
->iface
,
366 MAC2STR(hapd
->own_addr
), hapd
->conf
->iface
);
367 wpa_ft_rrb_rx(hapd
->wpa_auth
,
368 idata
->src_hapd
->own_addr
,
369 idata
->data
, idata
->data_len
);
377 #endif /* CONFIG_IEEE80211R */
380 static int hostapd_wpa_auth_send_ether(void *ctx
, const u8
*dst
, u16 proto
,
381 const u8
*data
, size_t data_len
)
383 struct hostapd_data
*hapd
= ctx
;
384 struct l2_ethhdr
*buf
;
387 #ifdef CONFIG_IEEE80211R
388 if (proto
== ETH_P_RRB
&& hapd
->iface
->interfaces
&&
389 hapd
->iface
->interfaces
->for_each_interface
) {
391 struct wpa_auth_ft_iface_iter_data idata
;
392 idata
.src_hapd
= hapd
;
395 idata
.data_len
= data_len
;
396 res
= hapd
->iface
->interfaces
->for_each_interface(
397 hapd
->iface
->interfaces
, hostapd_wpa_auth_ft_iter
,
402 #endif /* CONFIG_IEEE80211R */
404 if (hapd
->driver
&& hapd
->driver
->send_ether
)
405 return hapd
->driver
->send_ether(hapd
->drv_priv
, dst
,
406 hapd
->own_addr
, proto
,
408 if (hapd
->l2
== NULL
)
411 buf
= os_malloc(sizeof(*buf
) + data_len
);
414 os_memcpy(buf
->h_dest
, dst
, ETH_ALEN
);
415 os_memcpy(buf
->h_source
, hapd
->own_addr
, ETH_ALEN
);
416 buf
->h_proto
= host_to_be16(proto
);
417 os_memcpy(buf
+ 1, data
, data_len
);
418 ret
= l2_packet_send(hapd
->l2
, dst
, proto
, (u8
*) buf
,
419 sizeof(*buf
) + data_len
);
425 #ifdef CONFIG_IEEE80211R
427 static int hostapd_wpa_auth_send_ft_action(void *ctx
, const u8
*dst
,
428 const u8
*data
, size_t data_len
)
430 struct hostapd_data
*hapd
= ctx
;
432 struct ieee80211_mgmt
*m
;
434 struct sta_info
*sta
;
436 sta
= ap_get_sta(hapd
, dst
);
437 if (sta
== NULL
|| sta
->wpa_sm
== NULL
)
440 m
= os_zalloc(sizeof(*m
) + data_len
);
443 mlen
= ((u8
*) &m
->u
- (u8
*) m
) + data_len
;
444 m
->frame_control
= IEEE80211_FC(WLAN_FC_TYPE_MGMT
,
445 WLAN_FC_STYPE_ACTION
);
446 os_memcpy(m
->da
, dst
, ETH_ALEN
);
447 os_memcpy(m
->sa
, hapd
->own_addr
, ETH_ALEN
);
448 os_memcpy(m
->bssid
, hapd
->own_addr
, ETH_ALEN
);
449 os_memcpy(&m
->u
, data
, data_len
);
451 res
= hostapd_drv_send_mlme(hapd
, (u8
*) m
, mlen
, 0);
457 static struct wpa_state_machine
*
458 hostapd_wpa_auth_add_sta(void *ctx
, const u8
*sta_addr
)
460 struct hostapd_data
*hapd
= ctx
;
461 struct sta_info
*sta
;
463 if (hostapd_add_sta_node(hapd
, sta_addr
, WLAN_AUTH_FT
) < 0)
466 sta
= ap_sta_add(hapd
, sta_addr
);
470 sta
->auth_alg
= WLAN_AUTH_FT
;
474 sta
->wpa_sm
= wpa_auth_sta_init(hapd
->wpa_auth
, sta
->addr
);
475 if (sta
->wpa_sm
== NULL
) {
476 ap_free_sta(hapd
, sta
);
479 sta
->auth_alg
= WLAN_AUTH_FT
;
485 static void hostapd_rrb_receive(void *ctx
, const u8
*src_addr
, const u8
*buf
,
488 struct hostapd_data
*hapd
= ctx
;
489 struct l2_ethhdr
*ethhdr
;
490 if (len
< sizeof(*ethhdr
))
492 ethhdr
= (struct l2_ethhdr
*) buf
;
493 wpa_printf(MSG_DEBUG
, "FT: RRB received packet " MACSTR
" -> "
494 MACSTR
, MAC2STR(ethhdr
->h_source
), MAC2STR(ethhdr
->h_dest
));
495 wpa_ft_rrb_rx(hapd
->wpa_auth
, ethhdr
->h_source
, buf
+ sizeof(*ethhdr
),
496 len
- sizeof(*ethhdr
));
500 static int hostapd_wpa_auth_add_tspec(void *ctx
, const u8
*sta_addr
,
501 u8
*tspec_ie
, size_t tspec_ielen
)
503 struct hostapd_data
*hapd
= ctx
;
504 return hostapd_add_tspec(hapd
, sta_addr
, tspec_ie
, tspec_ielen
);
507 #endif /* CONFIG_IEEE80211R */
510 int hostapd_setup_wpa(struct hostapd_data
*hapd
)
512 struct wpa_auth_config _conf
;
513 struct wpa_auth_callbacks cb
;
517 hostapd_wpa_auth_conf(hapd
->conf
, hapd
->iconf
, &_conf
);
518 if (hapd
->iface
->drv_flags
& WPA_DRIVER_FLAGS_EAPOL_TX_STATUS
)
520 if (hapd
->iface
->drv_flags
& WPA_DRIVER_FLAGS_AP_MLME
)
522 os_memset(&cb
, 0, sizeof(cb
));
524 cb
.logger
= hostapd_wpa_auth_logger
;
525 cb
.disconnect
= hostapd_wpa_auth_disconnect
;
526 cb
.mic_failure_report
= hostapd_wpa_auth_mic_failure_report
;
527 cb
.set_eapol
= hostapd_wpa_auth_set_eapol
;
528 cb
.get_eapol
= hostapd_wpa_auth_get_eapol
;
529 cb
.get_psk
= hostapd_wpa_auth_get_psk
;
530 cb
.get_msk
= hostapd_wpa_auth_get_msk
;
531 cb
.set_key
= hostapd_wpa_auth_set_key
;
532 cb
.get_seqnum
= hostapd_wpa_auth_get_seqnum
;
533 cb
.send_eapol
= hostapd_wpa_auth_send_eapol
;
534 cb
.for_each_sta
= hostapd_wpa_auth_for_each_sta
;
535 cb
.for_each_auth
= hostapd_wpa_auth_for_each_auth
;
536 cb
.send_ether
= hostapd_wpa_auth_send_ether
;
537 #ifdef CONFIG_IEEE80211R
538 cb
.send_ft_action
= hostapd_wpa_auth_send_ft_action
;
539 cb
.add_sta
= hostapd_wpa_auth_add_sta
;
540 cb
.add_tspec
= hostapd_wpa_auth_add_tspec
;
541 #endif /* CONFIG_IEEE80211R */
542 hapd
->wpa_auth
= wpa_init(hapd
->own_addr
, &_conf
, &cb
);
543 if (hapd
->wpa_auth
== NULL
) {
544 wpa_printf(MSG_ERROR
, "WPA initialization failed.");
548 if (hostapd_set_privacy(hapd
, 1)) {
549 wpa_printf(MSG_ERROR
, "Could not set PrivacyInvoked "
550 "for interface %s", hapd
->conf
->iface
);
554 wpa_ie
= wpa_auth_get_wpa_ie(hapd
->wpa_auth
, &wpa_ie_len
);
555 if (hostapd_set_generic_elem(hapd
, wpa_ie
, wpa_ie_len
)) {
556 wpa_printf(MSG_ERROR
, "Failed to configure WPA IE for "
557 "the kernel driver.");
561 if (rsn_preauth_iface_init(hapd
)) {
562 wpa_printf(MSG_ERROR
, "Initialization of RSN "
563 "pre-authentication failed.");
567 #ifdef CONFIG_IEEE80211R
568 if (!hostapd_drv_none(hapd
)) {
569 hapd
->l2
= l2_packet_init(hapd
->conf
->bridge
[0] ?
571 hapd
->conf
->iface
, NULL
, ETH_P_RRB
,
572 hostapd_rrb_receive
, hapd
, 1);
573 if (hapd
->l2
== NULL
&&
574 (hapd
->driver
== NULL
||
575 hapd
->driver
->send_ether
== NULL
)) {
576 wpa_printf(MSG_ERROR
, "Failed to open l2_packet "
581 #endif /* CONFIG_IEEE80211R */
588 void hostapd_reconfig_wpa(struct hostapd_data
*hapd
)
590 struct wpa_auth_config wpa_auth_conf
;
591 hostapd_wpa_auth_conf(hapd
->conf
, hapd
->iconf
, &wpa_auth_conf
);
592 wpa_reconfig(hapd
->wpa_auth
, &wpa_auth_conf
);
596 void hostapd_deinit_wpa(struct hostapd_data
*hapd
)
598 ieee80211_tkip_countermeasures_deinit(hapd
);
599 rsn_preauth_iface_deinit(hapd
);
600 if (hapd
->wpa_auth
) {
601 wpa_deinit(hapd
->wpa_auth
);
602 hapd
->wpa_auth
= NULL
;
604 if (hostapd_set_privacy(hapd
, 0)) {
605 wpa_printf(MSG_DEBUG
, "Could not disable "
606 "PrivacyInvoked for interface %s",
610 if (hostapd_set_generic_elem(hapd
, (u8
*) "", 0)) {
611 wpa_printf(MSG_DEBUG
, "Could not remove generic "
612 "information element from interface %s",
616 ieee802_1x_deinit(hapd
);
618 #ifdef CONFIG_IEEE80211R
619 l2_packet_deinit(hapd
->l2
);
620 #endif /* CONFIG_IEEE80211R */