2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008, 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 "ieee802_11_defs.h"
19 #include "ieee802_11_common.h"
20 #include "wpa_common.h"
22 #include "eap_peer/eap.h"
23 #include "wpa_supplicant_i.h"
29 #include "eap_common/eap_wsc_common.h"
30 #include "blacklist.h"
32 #include "wps_supplicant.h"
33 #include "dh_group5.h"
35 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
37 static void wpas_wps_timeout(void *eloop_ctx
, void *timeout_ctx
);
38 static void wpas_clear_wps(struct wpa_supplicant
*wpa_s
);
41 int wpas_wps_eapol_cb(struct wpa_supplicant
*wpa_s
)
43 if (!wpa_s
->wps_success
&&
44 wpa_s
->current_ssid
&&
45 eap_is_wps_pin_enrollee(&wpa_s
->current_ssid
->eap
)) {
46 const u8
*bssid
= wpa_s
->bssid
;
47 if (is_zero_ether_addr(bssid
))
48 bssid
= wpa_s
->pending_bssid
;
50 wpa_printf(MSG_DEBUG
, "WPS: PIN registration with " MACSTR
51 " did not succeed - continue trying to find "
52 "suitable AP", MAC2STR(bssid
));
53 wpa_blacklist_add(wpa_s
, bssid
);
55 wpa_supplicant_deauthenticate(wpa_s
,
56 WLAN_REASON_DEAUTH_LEAVING
);
57 wpa_s
->reassociate
= 1;
58 wpa_supplicant_req_scan(wpa_s
,
59 wpa_s
->blacklist_cleared
? 5 : 0, 0);
60 wpa_s
->blacklist_cleared
= 0;
64 eloop_cancel_timeout(wpas_wps_timeout
, wpa_s
, NULL
);
66 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPS
&& wpa_s
->current_ssid
&&
67 !(wpa_s
->current_ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
)) {
68 wpa_printf(MSG_DEBUG
, "WPS: Network configuration replaced - "
69 "try to associate with the received credential");
70 wpa_supplicant_deauthenticate(wpa_s
,
71 WLAN_REASON_DEAUTH_LEAVING
);
72 wpa_s
->reassociate
= 1;
73 wpa_supplicant_req_scan(wpa_s
, 0, 0);
77 if (wpa_s
->key_mgmt
== WPA_KEY_MGMT_WPS
&& wpa_s
->current_ssid
) {
78 wpa_printf(MSG_DEBUG
, "WPS: Registration completed - waiting "
79 "for external credential processing");
80 wpas_clear_wps(wpa_s
);
81 wpa_supplicant_deauthenticate(wpa_s
,
82 WLAN_REASON_DEAUTH_LEAVING
);
90 static void wpas_wps_security_workaround(struct wpa_supplicant
*wpa_s
,
91 struct wpa_ssid
*ssid
,
92 const struct wps_credential
*cred
)
94 struct wpa_driver_capa capa
;
96 struct wpa_scan_res
*bss
;
98 struct wpa_ie_data adv
;
99 int wpa2
= 0, ccmp
= 0;
102 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
103 * case they are configured for mixed mode operation (WPA+WPA2 and
104 * TKIP+CCMP). Try to use scan results to figure out whether the AP
105 * actually supports stronger security and select that if the client
106 * has support for it, too.
109 if (wpa_drv_get_capa(wpa_s
, &capa
))
110 return; /* Unknown what driver supports */
112 if (wpa_supplicant_get_scan_results(wpa_s
) || wpa_s
->scan_res
== NULL
)
113 return; /* Could not get scan results for checking advertised
116 for (i
= 0; i
< wpa_s
->scan_res
->num
; i
++) {
117 bss
= wpa_s
->scan_res
->res
[i
];
118 if (os_memcmp(bss
->bssid
, cred
->mac_addr
, ETH_ALEN
) != 0)
120 ie
= wpa_scan_get_ie(bss
, WLAN_EID_SSID
);
123 if (ie
[1] != ssid
->ssid_len
|| ssid
->ssid
== NULL
||
124 os_memcmp(ie
+ 2, ssid
->ssid
, ssid
->ssid_len
) != 0)
127 wpa_printf(MSG_DEBUG
, "WPS: AP found from scan results");
131 if (i
== wpa_s
->scan_res
->num
) {
132 wpa_printf(MSG_DEBUG
, "WPS: The AP was not found from scan "
133 "results - use credential as-is");
137 ie
= wpa_scan_get_ie(bss
, WLAN_EID_RSN
);
138 if (ie
&& wpa_parse_wpa_ie(ie
, 2 + ie
[1], &adv
) == 0) {
140 if (adv
.pairwise_cipher
& WPA_CIPHER_CCMP
)
143 ie
= wpa_scan_get_vendor_ie(bss
, WPA_IE_VENDOR_TYPE
);
144 if (ie
&& wpa_parse_wpa_ie(ie
, 2 + ie
[1], &adv
) == 0 &&
145 adv
.pairwise_cipher
& WPA_CIPHER_CCMP
)
149 if (ie
== NULL
&& (ssid
->proto
& WPA_PROTO_WPA
) &&
150 (ssid
->pairwise_cipher
& WPA_CIPHER_TKIP
)) {
152 * TODO: This could be the initial AP configuration and the
153 * Beacon contents could change shortly. Should request a new
154 * scan and delay addition of the network until the updated
155 * scan results are available.
157 wpa_printf(MSG_DEBUG
, "WPS: The AP did not yet advertise WPA "
158 "support - use credential as-is");
162 if (ccmp
&& !(ssid
->pairwise_cipher
& WPA_CIPHER_CCMP
) &&
163 (ssid
->pairwise_cipher
& WPA_CIPHER_TKIP
) &&
164 (capa
.key_mgmt
& WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK
)) {
165 wpa_printf(MSG_DEBUG
, "WPS: Add CCMP into the credential "
166 "based on scan results");
167 if (wpa_s
->conf
->ap_scan
== 1)
168 ssid
->pairwise_cipher
|= WPA_CIPHER_CCMP
;
170 ssid
->pairwise_cipher
= WPA_CIPHER_CCMP
;
173 if (wpa2
&& !(ssid
->proto
& WPA_PROTO_RSN
) &&
174 (ssid
->proto
& WPA_PROTO_WPA
) &&
175 (capa
.enc
& WPA_DRIVER_CAPA_ENC_CCMP
)) {
176 wpa_printf(MSG_DEBUG
, "WPS: Add WPA2 into the credential "
177 "based on scan results");
178 if (wpa_s
->conf
->ap_scan
== 1)
179 ssid
->proto
|= WPA_PROTO_RSN
;
181 ssid
->proto
= WPA_PROTO_RSN
;
186 static int wpa_supplicant_wps_cred(void *ctx
,
187 const struct wps_credential
*cred
)
189 struct wpa_supplicant
*wpa_s
= ctx
;
190 struct wpa_ssid
*ssid
= wpa_s
->current_ssid
;
194 if ((wpa_s
->conf
->wps_cred_processing
== 1 ||
195 wpa_s
->conf
->wps_cred_processing
== 2) && cred
->cred_attr
) {
196 size_t blen
= cred
->cred_attr_len
* 2 + 1;
197 char *buf
= os_malloc(blen
);
199 wpa_snprintf_hex(buf
, blen
,
200 cred
->cred_attr
, cred
->cred_attr_len
);
201 wpa_msg(wpa_s
, MSG_INFO
, "%s%s",
202 WPS_EVENT_CRED_RECEIVED
, buf
);
206 wpas_notify_wps_credential(wpa_s
, cred
);
208 wpa_msg(wpa_s
, MSG_INFO
, WPS_EVENT_CRED_RECEIVED
);
210 wpa_hexdump_key(MSG_DEBUG
, "WPS: Received Credential attribute",
211 cred
->cred_attr
, cred
->cred_attr_len
);
213 if (wpa_s
->conf
->wps_cred_processing
== 1)
216 wpa_hexdump_ascii(MSG_DEBUG
, "WPS: SSID", cred
->ssid
, cred
->ssid_len
);
217 wpa_printf(MSG_DEBUG
, "WPS: Authentication Type 0x%x",
219 wpa_printf(MSG_DEBUG
, "WPS: Encryption Type 0x%x", cred
->encr_type
);
220 wpa_printf(MSG_DEBUG
, "WPS: Network Key Index %d", cred
->key_idx
);
221 wpa_hexdump_key(MSG_DEBUG
, "WPS: Network Key",
222 cred
->key
, cred
->key_len
);
223 wpa_printf(MSG_DEBUG
, "WPS: MAC Address " MACSTR
,
224 MAC2STR(cred
->mac_addr
));
226 auth_type
= cred
->auth_type
;
227 if (auth_type
== (WPS_AUTH_WPAPSK
| WPS_AUTH_WPA2PSK
)) {
228 wpa_printf(MSG_DEBUG
, "WPS: Workaround - convert mixed-mode "
229 "auth_type into WPA2PSK");
230 auth_type
= WPS_AUTH_WPA2PSK
;
233 if (auth_type
!= WPS_AUTH_OPEN
&&
234 auth_type
!= WPS_AUTH_SHARED
&&
235 auth_type
!= WPS_AUTH_WPAPSK
&&
236 auth_type
!= WPS_AUTH_WPA2PSK
) {
237 wpa_printf(MSG_DEBUG
, "WPS: Ignored credentials for "
238 "unsupported authentication type 0x%x",
243 if (ssid
&& (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
)) {
244 wpa_printf(MSG_DEBUG
, "WPS: Replace WPS network block based "
245 "on the received credential");
246 os_free(ssid
->eap
.identity
);
247 ssid
->eap
.identity
= NULL
;
248 ssid
->eap
.identity_len
= 0;
249 os_free(ssid
->eap
.phase1
);
250 ssid
->eap
.phase1
= NULL
;
251 os_free(ssid
->eap
.eap_methods
);
252 ssid
->eap
.eap_methods
= NULL
;
254 wpa_printf(MSG_DEBUG
, "WPS: Create a new network based on the "
255 "received credential");
256 ssid
= wpa_config_add_network(wpa_s
->conf
);
259 wpas_notify_network_added(wpa_s
, ssid
);
262 wpa_config_set_network_defaults(ssid
);
265 ssid
->ssid
= os_malloc(cred
->ssid_len
);
267 os_memcpy(ssid
->ssid
, cred
->ssid
, cred
->ssid_len
);
268 ssid
->ssid_len
= cred
->ssid_len
;
271 switch (cred
->encr_type
) {
275 if (cred
->key_len
<= 0)
277 if (cred
->key_len
!= 5 && cred
->key_len
!= 13 &&
278 cred
->key_len
!= 10 && cred
->key_len
!= 26) {
279 wpa_printf(MSG_ERROR
, "WPS: Invalid WEP Key length "
280 "%lu", (unsigned long) cred
->key_len
);
283 if (cred
->key_idx
> NUM_WEP_KEYS
) {
284 wpa_printf(MSG_ERROR
, "WPS: Invalid WEP Key index %d",
289 key_idx
= cred
->key_idx
- 1;
290 if (cred
->key_len
== 10 || cred
->key_len
== 26) {
291 if (hexstr2bin((char *) cred
->key
,
292 ssid
->wep_key
[key_idx
],
293 cred
->key_len
/ 2) < 0) {
294 wpa_printf(MSG_ERROR
, "WPS: Invalid WEP Key "
298 ssid
->wep_key_len
[key_idx
] = cred
->key_len
/ 2;
300 os_memcpy(ssid
->wep_key
[key_idx
], cred
->key
,
302 ssid
->wep_key_len
[key_idx
] = cred
->key_len
;
304 ssid
->wep_tx_keyidx
= key_idx
;
307 ssid
->pairwise_cipher
= WPA_CIPHER_TKIP
;
310 ssid
->pairwise_cipher
= WPA_CIPHER_CCMP
;
316 ssid
->auth_alg
= WPA_AUTH_ALG_OPEN
;
317 ssid
->key_mgmt
= WPA_KEY_MGMT_NONE
;
320 case WPS_AUTH_SHARED
:
321 ssid
->auth_alg
= WPA_AUTH_ALG_SHARED
;
322 ssid
->key_mgmt
= WPA_KEY_MGMT_NONE
;
325 case WPS_AUTH_WPAPSK
:
326 ssid
->auth_alg
= WPA_AUTH_ALG_OPEN
;
327 ssid
->key_mgmt
= WPA_KEY_MGMT_PSK
;
328 ssid
->proto
= WPA_PROTO_WPA
;
331 ssid
->auth_alg
= WPA_AUTH_ALG_OPEN
;
332 ssid
->key_mgmt
= WPA_KEY_MGMT_IEEE8021X
;
333 ssid
->proto
= WPA_PROTO_WPA
;
336 ssid
->auth_alg
= WPA_AUTH_ALG_OPEN
;
337 ssid
->key_mgmt
= WPA_KEY_MGMT_IEEE8021X
;
338 ssid
->proto
= WPA_PROTO_RSN
;
340 case WPS_AUTH_WPA2PSK
:
341 ssid
->auth_alg
= WPA_AUTH_ALG_OPEN
;
342 ssid
->key_mgmt
= WPA_KEY_MGMT_PSK
;
343 ssid
->proto
= WPA_PROTO_RSN
;
347 if (ssid
->key_mgmt
== WPA_KEY_MGMT_PSK
) {
348 if (cred
->key_len
== 2 * PMK_LEN
) {
349 if (hexstr2bin((const char *) cred
->key
, ssid
->psk
,
351 wpa_printf(MSG_ERROR
, "WPS: Invalid Network "
356 } else if (cred
->key_len
>= 8 && cred
->key_len
< 2 * PMK_LEN
) {
357 os_free(ssid
->passphrase
);
358 ssid
->passphrase
= os_malloc(cred
->key_len
+ 1);
359 if (ssid
->passphrase
== NULL
)
361 os_memcpy(ssid
->passphrase
, cred
->key
, cred
->key_len
);
362 ssid
->passphrase
[cred
->key_len
] = '\0';
363 wpa_config_update_psk(ssid
);
365 wpa_printf(MSG_ERROR
, "WPS: Invalid Network Key "
367 (unsigned long) cred
->key_len
);
372 wpas_wps_security_workaround(wpa_s
, ssid
, cred
);
374 #ifndef CONFIG_NO_CONFIG_WRITE
375 if (wpa_s
->conf
->update_config
&&
376 wpa_config_write(wpa_s
->confname
, wpa_s
->conf
)) {
377 wpa_printf(MSG_DEBUG
, "WPS: Failed to update configuration");
380 #endif /* CONFIG_NO_CONFIG_WRITE */
386 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant
*wpa_s
,
387 struct wps_event_m2d
*m2d
)
389 wpa_msg(wpa_s
, MSG_INFO
, WPS_EVENT_M2D
390 "dev_password_id=%d config_error=%d",
391 m2d
->dev_password_id
, m2d
->config_error
);
392 wpas_notify_wps_event_m2d(wpa_s
, m2d
);
396 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant
*wpa_s
,
397 struct wps_event_fail
*fail
)
399 wpa_msg(wpa_s
, MSG_INFO
, WPS_EVENT_FAIL
"msg=%d", fail
->msg
);
400 wpas_clear_wps(wpa_s
);
401 wpas_notify_wps_event_fail(wpa_s
, fail
);
405 static void wpa_supplicant_wps_event_success(struct wpa_supplicant
*wpa_s
)
407 wpa_msg(wpa_s
, MSG_INFO
, WPS_EVENT_SUCCESS
);
408 wpa_s
->wps_success
= 1;
409 wpas_notify_wps_event_success(wpa_s
);
413 static void wpa_supplicant_wps_event(void *ctx
, enum wps_event event
,
414 union wps_event_data
*data
)
416 struct wpa_supplicant
*wpa_s
= ctx
;
419 wpa_supplicant_wps_event_m2d(wpa_s
, &data
->m2d
);
422 wpa_supplicant_wps_event_fail(wpa_s
, &data
->fail
);
425 wpa_supplicant_wps_event_success(wpa_s
);
427 case WPS_EV_PWD_AUTH_FAIL
:
429 case WPS_EV_PBC_OVERLAP
:
431 case WPS_EV_PBC_TIMEOUT
:
437 enum wps_request_type
wpas_wps_get_req_type(struct wpa_ssid
*ssid
)
439 if (eap_is_wps_pbc_enrollee(&ssid
->eap
) ||
440 eap_is_wps_pin_enrollee(&ssid
->eap
))
441 return WPS_REQ_ENROLLEE
;
443 return WPS_REQ_REGISTRAR
;
447 static void wpas_clear_wps(struct wpa_supplicant
*wpa_s
)
450 struct wpa_ssid
*ssid
, *remove_ssid
= NULL
;
452 eloop_cancel_timeout(wpas_wps_timeout
, wpa_s
, NULL
);
454 /* Remove any existing WPS network from configuration */
455 ssid
= wpa_s
->conf
->ssid
;
457 if (ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
) {
458 if (ssid
== wpa_s
->current_ssid
) {
459 wpa_s
->current_ssid
= NULL
;
461 wpas_notify_network_changed(wpa_s
);
469 wpas_notify_network_removed(wpa_s
, remove_ssid
);
470 wpa_config_remove_network(wpa_s
->conf
, id
);
476 static void wpas_wps_timeout(void *eloop_ctx
, void *timeout_ctx
)
478 struct wpa_supplicant
*wpa_s
= eloop_ctx
;
479 wpa_printf(MSG_INFO
, WPS_EVENT_TIMEOUT
"Requested operation timed "
481 wpas_clear_wps(wpa_s
);
485 static struct wpa_ssid
* wpas_wps_add_network(struct wpa_supplicant
*wpa_s
,
486 int registrar
, const u8
*bssid
)
488 struct wpa_ssid
*ssid
;
490 ssid
= wpa_config_add_network(wpa_s
->conf
);
493 wpas_notify_network_added(wpa_s
, ssid
);
494 wpa_config_set_network_defaults(ssid
);
495 if (wpa_config_set(ssid
, "key_mgmt", "WPS", 0) < 0 ||
496 wpa_config_set(ssid
, "eap", "WSC", 0) < 0 ||
497 wpa_config_set(ssid
, "identity", registrar
?
498 "\"" WSC_ID_REGISTRAR
"\"" :
499 "\"" WSC_ID_ENROLLEE
"\"", 0) < 0) {
500 wpas_notify_network_removed(wpa_s
, ssid
);
501 wpa_config_remove_network(wpa_s
->conf
, ssid
->id
);
507 struct wpa_scan_res
*res
;
509 os_memcpy(ssid
->bssid
, bssid
, ETH_ALEN
);
512 /* Try to get SSID from scan results */
513 if (wpa_s
->scan_res
== NULL
&&
514 wpa_supplicant_get_scan_results(wpa_s
) < 0)
515 return ssid
; /* Could not find any scan results */
517 for (i
= 0; i
< wpa_s
->scan_res
->num
; i
++) {
520 res
= wpa_s
->scan_res
->res
[i
];
521 if (os_memcmp(bssid
, res
->bssid
, ETH_ALEN
) != 0)
524 ie
= wpa_scan_get_ie(res
, WLAN_EID_SSID
);
528 ssid
->ssid
= os_malloc(ie
[1]);
529 if (ssid
->ssid
== NULL
)
531 os_memcpy(ssid
->ssid
, ie
+ 2, ie
[1]);
532 ssid
->ssid_len
= ie
[1];
541 static void wpas_wps_reassoc(struct wpa_supplicant
*wpa_s
,
542 struct wpa_ssid
*selected
)
544 struct wpa_ssid
*ssid
;
546 /* Mark all other networks disabled and trigger reassociation */
547 ssid
= wpa_s
->conf
->ssid
;
549 int was_disabled
= ssid
->disabled
;
550 ssid
->disabled
= ssid
!= selected
;
551 if (was_disabled
!= ssid
->disabled
)
552 wpas_notify_network_enabled_changed(wpa_s
, ssid
);
555 wpa_s
->disconnected
= 0;
556 wpa_s
->reassociate
= 1;
557 wpa_s
->scan_runs
= 0;
558 wpa_s
->wps_success
= 0;
559 wpa_s
->blacklist_cleared
= 0;
560 wpa_supplicant_req_scan(wpa_s
, 0, 0);
564 int wpas_wps_start_pbc(struct wpa_supplicant
*wpa_s
, const u8
*bssid
)
566 struct wpa_ssid
*ssid
;
567 wpas_clear_wps(wpa_s
);
568 ssid
= wpas_wps_add_network(wpa_s
, 0, bssid
);
571 wpa_config_set(ssid
, "phase1", "\"pbc=1\"", 0);
572 eloop_register_timeout(WPS_PBC_WALK_TIME
, 0, wpas_wps_timeout
,
574 wpas_wps_reassoc(wpa_s
, ssid
);
579 int wpas_wps_start_pin(struct wpa_supplicant
*wpa_s
, const u8
*bssid
,
582 struct wpa_ssid
*ssid
;
584 unsigned int rpin
= 0;
586 wpas_clear_wps(wpa_s
);
587 ssid
= wpas_wps_add_network(wpa_s
, 0, bssid
);
591 os_snprintf(val
, sizeof(val
), "\"pin=%s\"", pin
);
593 rpin
= wps_generate_pin();
594 os_snprintf(val
, sizeof(val
), "\"pin=%08d\"", rpin
);
596 wpa_config_set(ssid
, "phase1", val
, 0);
597 eloop_register_timeout(WPS_PBC_WALK_TIME
, 0, wpas_wps_timeout
,
599 wpas_wps_reassoc(wpa_s
, ssid
);
604 #ifdef CONFIG_WPS_OOB
605 int wpas_wps_start_oob(struct wpa_supplicant
*wpa_s
, char *device_type
,
606 char *path
, char *method
, char *name
)
608 struct wps_context
*wps
= wpa_s
->wps
;
609 struct oob_device_data
*oob_dev
;
611 oob_dev
= wps_get_oob_device(device_type
);
614 oob_dev
->device_path
= path
;
615 oob_dev
->device_name
= name
;
616 wps
->oob_conf
.oob_method
= wps_get_oob_method(method
);
618 if (wps
->oob_conf
.oob_method
== OOB_METHOD_DEV_PWD_E
) {
620 * Use pre-configured DH keys in order to be able to write the
621 * key hash into the OOB file.
623 wpabuf_free(wps
->dh_pubkey
);
624 wpabuf_free(wps
->dh_privkey
);
625 wps
->dh_privkey
= NULL
;
626 wps
->dh_pubkey
= NULL
;
627 dh5_free(wps
->dh_ctx
);
628 wps
->dh_ctx
= dh5_init(&wps
->dh_privkey
, &wps
->dh_pubkey
);
629 wps
->dh_pubkey
= wpabuf_zeropad(wps
->dh_pubkey
, 192);
630 if (wps
->dh_ctx
== NULL
|| wps
->dh_pubkey
== NULL
) {
631 wpa_printf(MSG_ERROR
, "WPS: Failed to initialize "
632 "Diffie-Hellman handshake");
637 if (wps
->oob_conf
.oob_method
== OOB_METHOD_CRED
)
638 wpas_clear_wps(wpa_s
);
640 if (wps_process_oob(wps
, oob_dev
, 0) < 0)
643 if ((wps
->oob_conf
.oob_method
== OOB_METHOD_DEV_PWD_E
||
644 wps
->oob_conf
.oob_method
== OOB_METHOD_DEV_PWD_R
) &&
645 wpas_wps_start_pin(wpa_s
, NULL
,
646 wpabuf_head(wps
->oob_conf
.dev_password
)) < 0)
651 #endif /* CONFIG_WPS_OOB */
654 int wpas_wps_start_reg(struct wpa_supplicant
*wpa_s
, const u8
*bssid
,
655 const char *pin
, struct wps_new_ap_settings
*settings
)
657 struct wpa_ssid
*ssid
;
664 wpas_clear_wps(wpa_s
);
665 ssid
= wpas_wps_add_network(wpa_s
, 1, bssid
);
669 end
= pos
+ sizeof(val
);
670 res
= os_snprintf(pos
, end
- pos
, "\"pin=%s", pin
);
671 if (res
< 0 || res
>= end
- pos
)
675 res
= os_snprintf(pos
, end
- pos
, " new_ssid=%s new_auth=%s "
676 "new_encr=%s new_key=%s",
677 settings
->ssid_hex
, settings
->auth
,
678 settings
->encr
, settings
->key_hex
);
679 if (res
< 0 || res
>= end
- pos
)
683 res
= os_snprintf(pos
, end
- pos
, "\"");
684 if (res
< 0 || res
>= end
- pos
)
686 wpa_config_set(ssid
, "phase1", val
, 0);
687 eloop_register_timeout(WPS_PBC_WALK_TIME
, 0, wpas_wps_timeout
,
689 wpas_wps_reassoc(wpa_s
, ssid
);
694 static int wpas_wps_new_psk_cb(void *ctx
, const u8
*mac_addr
, const u8
*psk
,
697 wpa_printf(MSG_DEBUG
, "WPS: Received new WPA/WPA2-PSK from WPS for "
698 "STA " MACSTR
, MAC2STR(mac_addr
));
699 wpa_hexdump_key(MSG_DEBUG
, "Per-device PSK", psk
, psk_len
);
707 static void wpas_wps_pin_needed_cb(void *ctx
, const u8
*uuid_e
,
708 const struct wps_device_data
*dev
)
710 char uuid
[40], txt
[400];
712 if (uuid_bin2str(uuid_e
, uuid
, sizeof(uuid
)))
714 wpa_printf(MSG_DEBUG
, "WPS: PIN needed for UUID-E %s", uuid
);
715 len
= os_snprintf(txt
, sizeof(txt
), "WPS-EVENT-PIN-NEEDED %s " MACSTR
716 " [%s|%s|%s|%s|%s|%d-%08X-%d]",
717 uuid
, MAC2STR(dev
->mac_addr
), dev
->device_name
,
718 dev
->manufacturer
, dev
->model_name
,
719 dev
->model_number
, dev
->serial_number
,
720 dev
->categ
, dev
->oui
, dev
->sub_categ
);
721 if (len
> 0 && len
< (int) sizeof(txt
))
722 wpa_printf(MSG_INFO
, "%s", txt
);
726 static void wpas_wps_set_sel_reg_cb(void *ctx
, int sel_reg
, u16 dev_passwd_id
,
727 u16 sel_reg_config_methods
)
730 struct wpa_supplicant
*wpa_s
= ctx
;
732 if (wpa_s
->wps_er
== NULL
)
734 wps_er_set_sel_reg(wpa_s
->wps_er
, sel_reg
, dev_passwd_id
,
735 sel_reg_config_methods
);
736 #endif /* CONFIG_WPS_ER */
740 int wpas_wps_init(struct wpa_supplicant
*wpa_s
)
742 struct wps_context
*wps
;
743 struct wps_registrar_config rcfg
;
745 wps
= os_zalloc(sizeof(*wps
));
749 wps
->cred_cb
= wpa_supplicant_wps_cred
;
750 wps
->event_cb
= wpa_supplicant_wps_event
;
753 wps
->dev
.device_name
= wpa_s
->conf
->device_name
;
754 wps
->dev
.manufacturer
= wpa_s
->conf
->manufacturer
;
755 wps
->dev
.model_name
= wpa_s
->conf
->model_name
;
756 wps
->dev
.model_number
= wpa_s
->conf
->model_number
;
757 wps
->dev
.serial_number
= wpa_s
->conf
->serial_number
;
758 if (wpa_s
->conf
->device_type
) {
761 /* <categ>-<OUI>-<subcateg> */
762 wps
->dev
.categ
= atoi(wpa_s
->conf
->device_type
);
763 pos
= os_strchr(wpa_s
->conf
->device_type
, '-');
765 wpa_printf(MSG_ERROR
, "WPS: Invalid device_type");
770 if (hexstr2bin(pos
, oui
, 4)) {
771 wpa_printf(MSG_ERROR
, "WPS: Invalid device_type OUI");
775 wps
->dev
.oui
= WPA_GET_BE32(oui
);
776 pos
= os_strchr(pos
, '-');
778 wpa_printf(MSG_ERROR
, "WPS: Invalid device_type");
783 wps
->dev
.sub_categ
= atoi(pos
);
785 wps
->dev
.os_version
= WPA_GET_BE32(wpa_s
->conf
->os_version
);
786 wps
->dev
.rf_bands
= WPS_RF_24GHZ
| WPS_RF_50GHZ
; /* TODO: config */
787 os_memcpy(wps
->dev
.mac_addr
, wpa_s
->own_addr
, ETH_ALEN
);
788 if (is_nil_uuid(wpa_s
->conf
->uuid
)) {
789 uuid_gen_mac_addr(wpa_s
->own_addr
, wps
->uuid
);
790 wpa_hexdump(MSG_DEBUG
, "WPS: UUID based on MAC address",
791 wps
->uuid
, WPS_UUID_LEN
);
793 os_memcpy(wps
->uuid
, wpa_s
->conf
->uuid
, WPS_UUID_LEN
);
795 wps
->auth_types
= WPS_AUTH_WPA2PSK
| WPS_AUTH_WPAPSK
;
796 wps
->encr_types
= WPS_ENCR_AES
| WPS_ENCR_TKIP
;
798 os_memset(&rcfg
, 0, sizeof(rcfg
));
799 rcfg
.new_psk_cb
= wpas_wps_new_psk_cb
;
800 rcfg
.pin_needed_cb
= wpas_wps_pin_needed_cb
;
801 rcfg
.set_sel_reg_cb
= wpas_wps_set_sel_reg_cb
;
804 wps
->registrar
= wps_registrar_init(wps
, &rcfg
);
805 if (wps
->registrar
== NULL
) {
806 wpa_printf(MSG_DEBUG
, "Failed to initialize WPS Registrar");
817 void wpas_wps_deinit(struct wpa_supplicant
*wpa_s
)
819 eloop_cancel_timeout(wpas_wps_timeout
, wpa_s
, NULL
);
821 if (wpa_s
->wps
== NULL
)
824 wps_registrar_deinit(wpa_s
->wps
->registrar
);
825 wpabuf_free(wpa_s
->wps
->dh_pubkey
);
826 wpabuf_free(wpa_s
->wps
->dh_privkey
);
827 wpabuf_free(wpa_s
->wps
->oob_conf
.pubkey_hash
);
828 wpabuf_free(wpa_s
->wps
->oob_conf
.dev_password
);
829 os_free(wpa_s
->wps
->network_key
);
834 wps_er_deinit(wpa_s
->wps_er
);
835 wpa_s
->wps_er
= NULL
;
836 #endif /* CONFIG_WPS_ER */
840 int wpas_wps_ssid_bss_match(struct wpa_supplicant
*wpa_s
,
841 struct wpa_ssid
*ssid
, struct wpa_scan_res
*bss
)
843 struct wpabuf
*wps_ie
;
845 if (!(ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
))
848 wps_ie
= wpa_scan_get_vendor_ie_multi(bss
, WPS_IE_VENDOR_TYPE
);
849 if (eap_is_wps_pbc_enrollee(&ssid
->eap
)) {
851 wpa_printf(MSG_DEBUG
, " skip - non-WPS AP");
855 if (!wps_is_selected_pbc_registrar(wps_ie
)) {
856 wpa_printf(MSG_DEBUG
, " skip - WPS AP "
857 "without active PBC Registrar");
862 /* TODO: overlap detection */
863 wpa_printf(MSG_DEBUG
, " selected based on WPS IE "
869 if (eap_is_wps_pin_enrollee(&ssid
->eap
)) {
871 wpa_printf(MSG_DEBUG
, " skip - non-WPS AP");
876 * Start with WPS APs that advertise active PIN Registrar and
877 * allow any WPS AP after third scan since some APs do not set
878 * Selected Registrar attribute properly when using external
881 if (!wps_is_selected_pin_registrar(wps_ie
)) {
882 if (wpa_s
->scan_runs
< WPS_PIN_SCAN_IGNORE_SEL_REG
) {
883 wpa_printf(MSG_DEBUG
, " skip - WPS AP "
884 "without active PIN Registrar");
888 wpa_printf(MSG_DEBUG
, " selected based on WPS IE");
890 wpa_printf(MSG_DEBUG
, " selected based on WPS IE "
898 wpa_printf(MSG_DEBUG
, " selected based on WPS IE");
907 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant
*wpa_s
,
908 struct wpa_ssid
*ssid
,
909 struct wpa_scan_res
*bss
)
911 struct wpabuf
*wps_ie
= NULL
;
914 if (eap_is_wps_pbc_enrollee(&ssid
->eap
)) {
915 wps_ie
= wpa_scan_get_vendor_ie_multi(bss
, WPS_IE_VENDOR_TYPE
);
916 if (wps_ie
&& wps_is_selected_pbc_registrar(wps_ie
)) {
917 /* allow wildcard SSID for WPS PBC */
920 } else if (eap_is_wps_pin_enrollee(&ssid
->eap
)) {
921 wps_ie
= wpa_scan_get_vendor_ie_multi(bss
, WPS_IE_VENDOR_TYPE
);
923 (wps_is_selected_pin_registrar(wps_ie
) ||
924 wpa_s
->scan_runs
>= WPS_PIN_SCAN_IGNORE_SEL_REG
)) {
925 /* allow wildcard SSID for WPS PIN */
930 if (!ret
&& ssid
->bssid_set
&&
931 os_memcmp(ssid
->bssid
, bss
->bssid
, ETH_ALEN
) == 0) {
932 /* allow wildcard SSID due to hardcoded BSSID match */
942 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant
*wpa_s
,
943 struct wpa_scan_res
*selected
,
944 struct wpa_ssid
*ssid
)
946 const u8
*sel_uuid
, *uuid
;
948 struct wpabuf
*wps_ie
;
951 if (!eap_is_wps_pbc_enrollee(&ssid
->eap
))
954 /* Make sure that only one AP is in active PBC mode */
955 wps_ie
= wpa_scan_get_vendor_ie_multi(selected
, WPS_IE_VENDOR_TYPE
);
957 sel_uuid
= wps_get_uuid_e(wps_ie
);
961 for (i
= 0; i
< wpa_s
->scan_res
->num
; i
++) {
962 struct wpa_scan_res
*bss
= wpa_s
->scan_res
->res
[i
];
966 ie
= wpa_scan_get_vendor_ie_multi(bss
, WPS_IE_VENDOR_TYPE
);
969 if (!wps_is_selected_pbc_registrar(ie
)) {
973 uuid
= wps_get_uuid_e(ie
);
974 if (sel_uuid
== NULL
|| uuid
== NULL
||
975 os_memcmp(sel_uuid
, uuid
, 16) != 0) {
976 ret
= 1; /* PBC overlap */
981 /* TODO: verify that this is reasonable dual-band situation */
992 void wpas_wps_notify_scan_results(struct wpa_supplicant
*wpa_s
)
996 if (wpa_s
->disconnected
|| wpa_s
->wpa_state
>= WPA_ASSOCIATED
)
999 for (i
= 0; i
< wpa_s
->scan_res
->num
; i
++) {
1000 struct wpa_scan_res
*bss
= wpa_s
->scan_res
->res
[i
];
1002 ie
= wpa_scan_get_vendor_ie_multi(bss
, WPS_IE_VENDOR_TYPE
);
1005 if (wps_is_selected_pbc_registrar(ie
))
1006 wpa_msg(wpa_s
, MSG_INFO
, WPS_EVENT_AP_AVAILABLE_PBC
);
1007 else if (wps_is_selected_pin_registrar(ie
))
1008 wpa_msg(wpa_s
, MSG_INFO
, WPS_EVENT_AP_AVAILABLE_PIN
);
1010 wpa_msg(wpa_s
, MSG_INFO
, WPS_EVENT_AP_AVAILABLE
);
1017 int wpas_wps_searching(struct wpa_supplicant
*wpa_s
)
1019 struct wpa_ssid
*ssid
;
1021 for (ssid
= wpa_s
->conf
->ssid
; ssid
; ssid
= ssid
->next
) {
1022 if ((ssid
->key_mgmt
& WPA_KEY_MGMT_WPS
) && !ssid
->disabled
)
1030 int wpas_wps_scan_result_text(const u8
*ies
, size_t ies_len
, char *buf
,
1033 struct wpabuf
*wps_ie
;
1036 wps_ie
= ieee802_11_vendor_ie_concat(ies
, ies_len
, WPS_DEV_OUI_WFA
);
1040 ret
= wps_attr_text(wps_ie
, buf
, end
);
1041 wpabuf_free(wps_ie
);
1046 int wpas_wps_er_start(struct wpa_supplicant
*wpa_s
)
1048 #ifdef CONFIG_WPS_ER
1049 if (wpa_s
->wps_er
) {
1050 /* TODO: re-send ctrl_iface events for current data? */
1053 wpa_s
->wps_er
= wps_er_init(wpa_s
->wps
, wpa_s
->ifname
);
1054 if (wpa_s
->wps_er
== NULL
)
1057 #else /* CONFIG_WPS_ER */
1059 #endif /* CONFIG_WPS_ER */
1063 int wpas_wps_er_stop(struct wpa_supplicant
*wpa_s
)
1065 #ifdef CONFIG_WPS_ER
1066 wps_er_deinit(wpa_s
->wps_er
);
1067 wpa_s
->wps_er
= NULL
;
1068 #endif /* CONFIG_WPS_ER */
1073 #ifdef CONFIG_WPS_ER
1074 int wpas_wps_er_add_pin(struct wpa_supplicant
*wpa_s
, const char *uuid
,
1080 if (os_strcmp(uuid
, "any") == 0)
1082 else if (uuid_str2bin(uuid
, u
))
1084 return wps_registrar_add_pin(wpa_s
->wps
->registrar
, any
? NULL
: u
,
1085 (const u8
*) pin
, os_strlen(pin
), 300);
1087 #endif /* CONFIG_WPS_ER */