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WPS: Allow pending WPS operation to be cancelled
[thirdparty/hostap.git] / wpa_supplicant / wps_supplicant.c
1 /*
2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008-2010, Jouni Malinen <j@w1.fi>
4 *
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.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "includes.h"
16
17 #include "common.h"
18 #include "eloop.h"
19 #include "uuid.h"
20 #include "crypto/dh_group5.h"
21 #include "common/ieee802_11_defs.h"
22 #include "common/ieee802_11_common.h"
23 #include "common/wpa_common.h"
24 #include "common/wpa_ctrl.h"
25 #include "eap_common/eap_wsc_common.h"
26 #include "eap_peer/eap.h"
27 #include "rsn_supp/wpa.h"
28 #include "config.h"
29 #include "wpa_supplicant_i.h"
30 #include "driver_i.h"
31 #include "notify.h"
32 #include "blacklist.h"
33 #include "bss.h"
34 #include "scan.h"
35 #include "ap.h"
36 #include "p2p/p2p.h"
37 #include "p2p_supplicant.h"
38 #include "wps_supplicant.h"
39
40
41 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
42 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
43 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
44
45 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
46 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
47
48
49 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
50 {
51 if (!wpa_s->wps_success &&
52 wpa_s->current_ssid &&
53 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
54 const u8 *bssid = wpa_s->bssid;
55 if (is_zero_ether_addr(bssid))
56 bssid = wpa_s->pending_bssid;
57
58 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
59 " did not succeed - continue trying to find "
60 "suitable AP", MAC2STR(bssid));
61 wpa_blacklist_add(wpa_s, bssid);
62
63 wpa_supplicant_deauthenticate(wpa_s,
64 WLAN_REASON_DEAUTH_LEAVING);
65 wpa_s->reassociate = 1;
66 wpa_supplicant_req_scan(wpa_s,
67 wpa_s->blacklist_cleared ? 5 : 0, 0);
68 wpa_s->blacklist_cleared = 0;
69 return 1;
70 }
71
72 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
73
74 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
75 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
76 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
77 "try to associate with the received credential");
78 wpa_supplicant_deauthenticate(wpa_s,
79 WLAN_REASON_DEAUTH_LEAVING);
80 wpa_s->after_wps = 5;
81 wpa_s->wps_freq = wpa_s->assoc_freq;
82 wpa_s->reassociate = 1;
83 wpa_supplicant_req_scan(wpa_s, 0, 0);
84 return 1;
85 }
86
87 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
88 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
89 "for external credential processing");
90 wpas_clear_wps(wpa_s);
91 wpa_supplicant_deauthenticate(wpa_s,
92 WLAN_REASON_DEAUTH_LEAVING);
93 return 1;
94 }
95
96 return 0;
97 }
98
99
100 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
101 struct wpa_ssid *ssid,
102 const struct wps_credential *cred)
103 {
104 struct wpa_driver_capa capa;
105 struct wpa_bss *bss;
106 const u8 *ie;
107 struct wpa_ie_data adv;
108 int wpa2 = 0, ccmp = 0;
109
110 /*
111 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
112 * case they are configured for mixed mode operation (WPA+WPA2 and
113 * TKIP+CCMP). Try to use scan results to figure out whether the AP
114 * actually supports stronger security and select that if the client
115 * has support for it, too.
116 */
117
118 if (wpa_drv_get_capa(wpa_s, &capa))
119 return; /* Unknown what driver supports */
120
121 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
122 if (bss == NULL) {
123 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
124 "table - use credential as-is");
125 return;
126 }
127
128 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
129
130 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
131 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
132 wpa2 = 1;
133 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
134 ccmp = 1;
135 } else {
136 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
137 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
138 adv.pairwise_cipher & WPA_CIPHER_CCMP)
139 ccmp = 1;
140 }
141
142 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
143 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
144 /*
145 * TODO: This could be the initial AP configuration and the
146 * Beacon contents could change shortly. Should request a new
147 * scan and delay addition of the network until the updated
148 * scan results are available.
149 */
150 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
151 "support - use credential as-is");
152 return;
153 }
154
155 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
156 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
157 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
158 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
159 "based on scan results");
160 if (wpa_s->conf->ap_scan == 1)
161 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
162 else
163 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
164 }
165
166 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
167 (ssid->proto & WPA_PROTO_WPA) &&
168 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
169 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
170 "based on scan results");
171 if (wpa_s->conf->ap_scan == 1)
172 ssid->proto |= WPA_PROTO_RSN;
173 else
174 ssid->proto = WPA_PROTO_RSN;
175 }
176 }
177
178
179 static int wpa_supplicant_wps_cred(void *ctx,
180 const struct wps_credential *cred)
181 {
182 struct wpa_supplicant *wpa_s = ctx;
183 struct wpa_ssid *ssid = wpa_s->current_ssid;
184 u8 key_idx = 0;
185 u16 auth_type;
186
187 if ((wpa_s->conf->wps_cred_processing == 1 ||
188 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
189 size_t blen = cred->cred_attr_len * 2 + 1;
190 char *buf = os_malloc(blen);
191 if (buf) {
192 wpa_snprintf_hex(buf, blen,
193 cred->cred_attr, cred->cred_attr_len);
194 wpa_msg(wpa_s, MSG_INFO, "%s%s",
195 WPS_EVENT_CRED_RECEIVED, buf);
196 os_free(buf);
197 }
198
199 wpas_notify_wps_credential(wpa_s, cred);
200 } else
201 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
202
203 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
204 cred->cred_attr, cred->cred_attr_len);
205
206 if (wpa_s->conf->wps_cred_processing == 1)
207 return 0;
208
209 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
210 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
211 cred->auth_type);
212 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
213 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
214 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
215 cred->key, cred->key_len);
216 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
217 MAC2STR(cred->mac_addr));
218
219 auth_type = cred->auth_type;
220 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
221 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
222 "auth_type into WPA2PSK");
223 auth_type = WPS_AUTH_WPA2PSK;
224 }
225
226 if (auth_type != WPS_AUTH_OPEN &&
227 auth_type != WPS_AUTH_SHARED &&
228 auth_type != WPS_AUTH_WPAPSK &&
229 auth_type != WPS_AUTH_WPA2PSK) {
230 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
231 "unsupported authentication type 0x%x",
232 auth_type);
233 return 0;
234 }
235
236 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
237 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
238 "on the received credential");
239 os_free(ssid->eap.identity);
240 ssid->eap.identity = NULL;
241 ssid->eap.identity_len = 0;
242 os_free(ssid->eap.phase1);
243 ssid->eap.phase1 = NULL;
244 os_free(ssid->eap.eap_methods);
245 ssid->eap.eap_methods = NULL;
246 if (!ssid->p2p_group)
247 ssid->temporary = 0;
248 } else {
249 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
250 "received credential");
251 ssid = wpa_config_add_network(wpa_s->conf);
252 if (ssid == NULL)
253 return -1;
254 wpas_notify_network_added(wpa_s, ssid);
255 }
256
257 wpa_config_set_network_defaults(ssid);
258
259 os_free(ssid->ssid);
260 ssid->ssid = os_malloc(cred->ssid_len);
261 if (ssid->ssid) {
262 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
263 ssid->ssid_len = cred->ssid_len;
264 }
265
266 switch (cred->encr_type) {
267 case WPS_ENCR_NONE:
268 break;
269 case WPS_ENCR_WEP:
270 if (cred->key_len <= 0)
271 break;
272 if (cred->key_len != 5 && cred->key_len != 13 &&
273 cred->key_len != 10 && cred->key_len != 26) {
274 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
275 "%lu", (unsigned long) cred->key_len);
276 return -1;
277 }
278 if (cred->key_idx > NUM_WEP_KEYS) {
279 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
280 cred->key_idx);
281 return -1;
282 }
283 if (cred->key_idx)
284 key_idx = cred->key_idx - 1;
285 if (cred->key_len == 10 || cred->key_len == 26) {
286 if (hexstr2bin((char *) cred->key,
287 ssid->wep_key[key_idx],
288 cred->key_len / 2) < 0) {
289 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
290 "%d", key_idx);
291 return -1;
292 }
293 ssid->wep_key_len[key_idx] = cred->key_len / 2;
294 } else {
295 os_memcpy(ssid->wep_key[key_idx], cred->key,
296 cred->key_len);
297 ssid->wep_key_len[key_idx] = cred->key_len;
298 }
299 ssid->wep_tx_keyidx = key_idx;
300 break;
301 case WPS_ENCR_TKIP:
302 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
303 break;
304 case WPS_ENCR_AES:
305 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
306 break;
307 }
308
309 switch (auth_type) {
310 case WPS_AUTH_OPEN:
311 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
312 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
313 ssid->proto = 0;
314 break;
315 case WPS_AUTH_SHARED:
316 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
317 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
318 ssid->proto = 0;
319 break;
320 case WPS_AUTH_WPAPSK:
321 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
322 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
323 ssid->proto = WPA_PROTO_WPA;
324 break;
325 case WPS_AUTH_WPA:
326 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
327 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
328 ssid->proto = WPA_PROTO_WPA;
329 break;
330 case WPS_AUTH_WPA2:
331 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
332 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
333 ssid->proto = WPA_PROTO_RSN;
334 break;
335 case WPS_AUTH_WPA2PSK:
336 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
337 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
338 ssid->proto = WPA_PROTO_RSN;
339 break;
340 }
341
342 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
343 if (cred->key_len == 2 * PMK_LEN) {
344 if (hexstr2bin((const char *) cred->key, ssid->psk,
345 PMK_LEN)) {
346 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
347 "Key");
348 return -1;
349 }
350 ssid->psk_set = 1;
351 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
352 os_free(ssid->passphrase);
353 ssid->passphrase = os_malloc(cred->key_len + 1);
354 if (ssid->passphrase == NULL)
355 return -1;
356 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
357 ssid->passphrase[cred->key_len] = '\0';
358 wpa_config_update_psk(ssid);
359 } else {
360 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
361 "length %lu",
362 (unsigned long) cred->key_len);
363 return -1;
364 }
365 }
366
367 wpas_wps_security_workaround(wpa_s, ssid, cred);
368
369 #ifndef CONFIG_NO_CONFIG_WRITE
370 if (wpa_s->conf->update_config &&
371 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
372 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
373 return -1;
374 }
375 #endif /* CONFIG_NO_CONFIG_WRITE */
376
377 return 0;
378 }
379
380
381 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
382 struct wps_event_m2d *m2d)
383 {
384 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
385 "dev_password_id=%d config_error=%d",
386 m2d->dev_password_id, m2d->config_error);
387 wpas_notify_wps_event_m2d(wpa_s, m2d);
388 }
389
390
391 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
392 struct wps_event_fail *fail)
393 {
394 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
395 wpas_clear_wps(wpa_s);
396 wpas_notify_wps_event_fail(wpa_s, fail);
397 }
398
399
400 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
401 {
402 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
403 wpa_s->wps_success = 1;
404 wpas_notify_wps_event_success(wpa_s);
405 #ifdef CONFIG_P2P
406 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
407 #endif /* CONFIG_P2P */
408 }
409
410
411 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
412 struct wps_event_er_ap *ap)
413 {
414 char uuid_str[100];
415 char dev_type[WPS_DEV_TYPE_BUFSIZE];
416
417 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
418 if (ap->pri_dev_type)
419 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
420 sizeof(dev_type));
421 else
422 dev_type[0] = '\0';
423
424 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
425 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
426 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
427 ap->friendly_name ? ap->friendly_name : "",
428 ap->manufacturer ? ap->manufacturer : "",
429 ap->model_description ? ap->model_description : "",
430 ap->model_name ? ap->model_name : "",
431 ap->manufacturer_url ? ap->manufacturer_url : "",
432 ap->model_url ? ap->model_url : "");
433 }
434
435
436 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
437 struct wps_event_er_ap *ap)
438 {
439 char uuid_str[100];
440 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
441 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
442 }
443
444
445 static void wpa_supplicant_wps_event_er_enrollee_add(
446 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
447 {
448 char uuid_str[100];
449 char dev_type[WPS_DEV_TYPE_BUFSIZE];
450
451 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
452 if (enrollee->pri_dev_type)
453 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
454 sizeof(dev_type));
455 else
456 dev_type[0] = '\0';
457
458 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
459 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
460 "|%s|%s|%s|%s|%s|",
461 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
462 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
463 enrollee->dev_name ? enrollee->dev_name : "",
464 enrollee->manufacturer ? enrollee->manufacturer : "",
465 enrollee->model_name ? enrollee->model_name : "",
466 enrollee->model_number ? enrollee->model_number : "",
467 enrollee->serial_number ? enrollee->serial_number : "");
468 }
469
470
471 static void wpa_supplicant_wps_event_er_enrollee_remove(
472 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
473 {
474 char uuid_str[100];
475 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
476 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
477 uuid_str, MAC2STR(enrollee->mac_addr));
478 }
479
480
481 static void wpa_supplicant_wps_event_er_ap_settings(
482 struct wpa_supplicant *wpa_s,
483 struct wps_event_er_ap_settings *ap_settings)
484 {
485 char uuid_str[100];
486 char key_str[65];
487 const struct wps_credential *cred = ap_settings->cred;
488
489 key_str[0] = '\0';
490 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
491 if (cred->key_len >= 8 && cred->key_len <= 64) {
492 os_memcpy(key_str, cred->key, cred->key_len);
493 key_str[cred->key_len] = '\0';
494 }
495 }
496
497 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
498 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
499 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
500 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
501 "key=%s",
502 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
503 cred->auth_type, cred->encr_type, key_str);
504 }
505
506
507 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
508 union wps_event_data *data)
509 {
510 struct wpa_supplicant *wpa_s = ctx;
511 switch (event) {
512 case WPS_EV_M2D:
513 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
514 break;
515 case WPS_EV_FAIL:
516 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
517 break;
518 case WPS_EV_SUCCESS:
519 wpa_supplicant_wps_event_success(wpa_s);
520 break;
521 case WPS_EV_PWD_AUTH_FAIL:
522 break;
523 case WPS_EV_PBC_OVERLAP:
524 break;
525 case WPS_EV_PBC_TIMEOUT:
526 break;
527 case WPS_EV_ER_AP_ADD:
528 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
529 break;
530 case WPS_EV_ER_AP_REMOVE:
531 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
532 break;
533 case WPS_EV_ER_ENROLLEE_ADD:
534 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
535 &data->enrollee);
536 break;
537 case WPS_EV_ER_ENROLLEE_REMOVE:
538 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
539 &data->enrollee);
540 break;
541 case WPS_EV_ER_AP_SETTINGS:
542 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
543 &data->ap_settings);
544 break;
545 }
546 }
547
548
549 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
550 {
551 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
552 eap_is_wps_pin_enrollee(&ssid->eap))
553 return WPS_REQ_ENROLLEE;
554 else
555 return WPS_REQ_REGISTRAR;
556 }
557
558
559 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
560 {
561 int id;
562 struct wpa_ssid *ssid, *remove_ssid = NULL;
563
564 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
565
566 /* Remove any existing WPS network from configuration */
567 ssid = wpa_s->conf->ssid;
568 while (ssid) {
569 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
570 if (ssid == wpa_s->current_ssid) {
571 wpa_s->current_ssid = NULL;
572 if (ssid != NULL)
573 wpas_notify_network_changed(wpa_s);
574 }
575 id = ssid->id;
576 remove_ssid = ssid;
577 } else
578 id = -1;
579 ssid = ssid->next;
580 if (id >= 0) {
581 wpas_notify_network_removed(wpa_s, remove_ssid);
582 wpa_config_remove_network(wpa_s->conf, id);
583 }
584 }
585 }
586
587
588 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
589 {
590 struct wpa_supplicant *wpa_s = eloop_ctx;
591 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
592 "out");
593 wpas_clear_wps(wpa_s);
594 }
595
596
597 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
598 int registrar, const u8 *bssid)
599 {
600 struct wpa_ssid *ssid;
601
602 ssid = wpa_config_add_network(wpa_s->conf);
603 if (ssid == NULL)
604 return NULL;
605 wpas_notify_network_added(wpa_s, ssid);
606 wpa_config_set_network_defaults(ssid);
607 ssid->temporary = 1;
608 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
609 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
610 wpa_config_set(ssid, "identity", registrar ?
611 "\"" WSC_ID_REGISTRAR "\"" :
612 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
613 wpas_notify_network_removed(wpa_s, ssid);
614 wpa_config_remove_network(wpa_s->conf, ssid->id);
615 return NULL;
616 }
617
618 if (bssid) {
619 #ifndef CONFIG_P2P
620 struct wpa_bss *bss;
621 int count = 0;
622 #endif /* CONFIG_P2P */
623
624 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
625 ssid->bssid_set = 1;
626
627 /*
628 * Note: With P2P, the SSID may change at the time the WPS
629 * provisioning is started, so better not filter the AP based
630 * on the current SSID in the scan results.
631 */
632 #ifndef CONFIG_P2P
633 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
634 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
635 continue;
636
637 os_free(ssid->ssid);
638 ssid->ssid = os_malloc(bss->ssid_len);
639 if (ssid->ssid == NULL)
640 break;
641 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
642 ssid->ssid_len = bss->ssid_len;
643 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
644 "scan results",
645 ssid->ssid, ssid->ssid_len);
646 count++;
647 }
648
649 if (count > 1) {
650 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
651 "for the AP; use wildcard");
652 os_free(ssid->ssid);
653 ssid->ssid = NULL;
654 ssid->ssid_len = 0;
655 }
656 #endif /* CONFIG_P2P */
657 }
658
659 return ssid;
660 }
661
662
663 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
664 struct wpa_ssid *selected)
665 {
666 struct wpa_ssid *ssid;
667
668 /* Mark all other networks disabled and trigger reassociation */
669 ssid = wpa_s->conf->ssid;
670 while (ssid) {
671 int was_disabled = ssid->disabled;
672 ssid->disabled = ssid != selected;
673 if (was_disabled != ssid->disabled)
674 wpas_notify_network_enabled_changed(wpa_s, ssid);
675 ssid = ssid->next;
676 }
677 wpa_s->disconnected = 0;
678 wpa_s->reassociate = 1;
679 wpa_s->scan_runs = 0;
680 wpa_s->wps_success = 0;
681 wpa_s->blacklist_cleared = 0;
682 wpa_supplicant_req_scan(wpa_s, 0, 0);
683 }
684
685
686 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
687 int p2p_group)
688 {
689 struct wpa_ssid *ssid;
690 wpas_clear_wps(wpa_s);
691 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
692 if (ssid == NULL)
693 return -1;
694 ssid->temporary = 1;
695 ssid->p2p_group = p2p_group;
696 #ifdef CONFIG_P2P
697 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
698 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
699 if (ssid->ssid) {
700 ssid->ssid_len = wpa_s->go_params->ssid_len;
701 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
702 ssid->ssid_len);
703 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
704 "SSID", ssid->ssid, ssid->ssid_len);
705 }
706 }
707 #endif /* CONFIG_P2P */
708 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
709 if (wpa_s->wps_fragment_size)
710 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
711 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
712 wpa_s, NULL);
713 wpas_wps_reassoc(wpa_s, ssid);
714 return 0;
715 }
716
717
718 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
719 const char *pin, int p2p_group, u16 dev_pw_id)
720 {
721 struct wpa_ssid *ssid;
722 char val[128];
723 unsigned int rpin = 0;
724
725 wpas_clear_wps(wpa_s);
726 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
727 if (ssid == NULL)
728 return -1;
729 ssid->temporary = 1;
730 ssid->p2p_group = p2p_group;
731 #ifdef CONFIG_P2P
732 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
733 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
734 if (ssid->ssid) {
735 ssid->ssid_len = wpa_s->go_params->ssid_len;
736 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
737 ssid->ssid_len);
738 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
739 "SSID", ssid->ssid, ssid->ssid_len);
740 }
741 }
742 #endif /* CONFIG_P2P */
743 if (pin)
744 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
745 pin, dev_pw_id);
746 else {
747 rpin = wps_generate_pin();
748 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
749 rpin, dev_pw_id);
750 }
751 wpa_config_set(ssid, "phase1", val, 0);
752 if (wpa_s->wps_fragment_size)
753 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
754 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
755 wpa_s, NULL);
756 wpas_wps_reassoc(wpa_s, ssid);
757 return rpin;
758 }
759
760
761 /* Cancel the wps pbc/pin requests */
762 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
763 {
764 #ifdef CONFIG_AP
765 if (wpa_s->ap_iface) {
766 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
767 return wpa_supplicant_ap_wps_cancel(wpa_s);
768 }
769 #endif /* CONFIG_AP */
770
771 if (wpa_s->wpa_state == WPA_SCANNING) {
772 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
773 wpa_supplicant_cancel_scan(wpa_s);
774 wpas_clear_wps(wpa_s);
775 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
776 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
777 "deauthenticate");
778 wpa_supplicant_deauthenticate(wpa_s,
779 WLAN_REASON_DEAUTH_LEAVING);
780 wpas_clear_wps(wpa_s);
781 }
782
783 return 0;
784 }
785
786
787 #ifdef CONFIG_WPS_OOB
788 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
789 char *path, char *method, char *name)
790 {
791 struct wps_context *wps = wpa_s->wps;
792 struct oob_device_data *oob_dev;
793
794 oob_dev = wps_get_oob_device(device_type);
795 if (oob_dev == NULL)
796 return -1;
797 oob_dev->device_path = path;
798 oob_dev->device_name = name;
799 wps->oob_conf.oob_method = wps_get_oob_method(method);
800
801 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
802 /*
803 * Use pre-configured DH keys in order to be able to write the
804 * key hash into the OOB file.
805 */
806 wpabuf_free(wps->dh_pubkey);
807 wpabuf_free(wps->dh_privkey);
808 wps->dh_privkey = NULL;
809 wps->dh_pubkey = NULL;
810 dh5_free(wps->dh_ctx);
811 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
812 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
813 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
814 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
815 "Diffie-Hellman handshake");
816 return -1;
817 }
818 }
819
820 if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
821 wpas_clear_wps(wpa_s);
822
823 if (wps_process_oob(wps, oob_dev, 0) < 0)
824 return -1;
825
826 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
827 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
828 wpas_wps_start_pin(wpa_s, NULL,
829 wpabuf_head(wps->oob_conf.dev_password), 0) < 0)
830 return -1;
831
832 return 0;
833 }
834 #endif /* CONFIG_WPS_OOB */
835
836
837 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
838 const char *pin, struct wps_new_ap_settings *settings)
839 {
840 struct wpa_ssid *ssid;
841 char val[200];
842 char *pos, *end;
843 int res;
844
845 if (!pin)
846 return -1;
847 wpas_clear_wps(wpa_s);
848 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
849 if (ssid == NULL)
850 return -1;
851 ssid->temporary = 1;
852 pos = val;
853 end = pos + sizeof(val);
854 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
855 if (res < 0 || res >= end - pos)
856 return -1;
857 pos += res;
858 if (settings) {
859 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
860 "new_encr=%s new_key=%s",
861 settings->ssid_hex, settings->auth,
862 settings->encr, settings->key_hex);
863 if (res < 0 || res >= end - pos)
864 return -1;
865 pos += res;
866 }
867 res = os_snprintf(pos, end - pos, "\"");
868 if (res < 0 || res >= end - pos)
869 return -1;
870 wpa_config_set(ssid, "phase1", val, 0);
871 if (wpa_s->wps_fragment_size)
872 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
873 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
874 wpa_s, NULL);
875 wpas_wps_reassoc(wpa_s, ssid);
876 return 0;
877 }
878
879
880 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
881 size_t psk_len)
882 {
883 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
884 "STA " MACSTR, MAC2STR(mac_addr));
885 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
886
887 /* TODO */
888
889 return 0;
890 }
891
892
893 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
894 const struct wps_device_data *dev)
895 {
896 char uuid[40], txt[400];
897 int len;
898 char devtype[WPS_DEV_TYPE_BUFSIZE];
899 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
900 return;
901 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
902 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
903 " [%s|%s|%s|%s|%s|%s]",
904 uuid, MAC2STR(dev->mac_addr), dev->device_name,
905 dev->manufacturer, dev->model_name,
906 dev->model_number, dev->serial_number,
907 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
908 sizeof(devtype)));
909 if (len > 0 && len < (int) sizeof(txt))
910 wpa_printf(MSG_INFO, "%s", txt);
911 }
912
913
914 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
915 u16 sel_reg_config_methods)
916 {
917 #ifdef CONFIG_WPS_ER
918 struct wpa_supplicant *wpa_s = ctx;
919
920 if (wpa_s->wps_er == NULL)
921 return;
922 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
923 "dev_password_id=%u sel_reg_config_methods=0x%x",
924 sel_reg, dev_passwd_id, sel_reg_config_methods);
925 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
926 sel_reg_config_methods);
927 #endif /* CONFIG_WPS_ER */
928 }
929
930
931 int wpas_wps_init(struct wpa_supplicant *wpa_s)
932 {
933 struct wps_context *wps;
934 struct wps_registrar_config rcfg;
935
936 wps = os_zalloc(sizeof(*wps));
937 if (wps == NULL)
938 return -1;
939
940 wps->cred_cb = wpa_supplicant_wps_cred;
941 wps->event_cb = wpa_supplicant_wps_event;
942 wps->cb_ctx = wpa_s;
943
944 wps->dev.device_name = wpa_s->conf->device_name;
945 wps->dev.manufacturer = wpa_s->conf->manufacturer;
946 wps->dev.model_name = wpa_s->conf->model_name;
947 wps->dev.model_number = wpa_s->conf->model_number;
948 wps->dev.serial_number = wpa_s->conf->serial_number;
949 wps->config_methods =
950 wps_config_methods_str2bin(wpa_s->conf->config_methods);
951 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
952 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
953 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
954 "methods are not allowed at the same time");
955 os_free(wps);
956 return -1;
957 }
958 if (wpa_s->conf->device_type &&
959 wps_dev_type_str2bin(wpa_s->conf->device_type,
960 wps->dev.pri_dev_type) < 0) {
961 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
962 os_free(wps);
963 return -1;
964 }
965 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
966 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
967 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
968 if (is_nil_uuid(wpa_s->conf->uuid)) {
969 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
970 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
971 wps->uuid, WPS_UUID_LEN);
972 } else
973 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
974
975 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
976 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
977
978 os_memset(&rcfg, 0, sizeof(rcfg));
979 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
980 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
981 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
982 rcfg.cb_ctx = wpa_s;
983
984 wps->registrar = wps_registrar_init(wps, &rcfg);
985 if (wps->registrar == NULL) {
986 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
987 os_free(wps);
988 return -1;
989 }
990
991 wpa_s->wps = wps;
992
993 return 0;
994 }
995
996
997 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
998 {
999 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1000
1001 if (wpa_s->wps == NULL)
1002 return;
1003
1004 #ifdef CONFIG_WPS_ER
1005 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1006 wpa_s->wps_er = NULL;
1007 #endif /* CONFIG_WPS_ER */
1008
1009 wps_registrar_deinit(wpa_s->wps->registrar);
1010 wpabuf_free(wpa_s->wps->dh_pubkey);
1011 wpabuf_free(wpa_s->wps->dh_privkey);
1012 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1013 wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1014 os_free(wpa_s->wps->network_key);
1015 os_free(wpa_s->wps);
1016 wpa_s->wps = NULL;
1017 }
1018
1019
1020 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1021 struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1022 {
1023 struct wpabuf *wps_ie;
1024
1025 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1026 return -1;
1027
1028 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1029 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1030 if (!wps_ie) {
1031 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1032 return 0;
1033 }
1034
1035 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1036 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1037 "without active PBC Registrar");
1038 wpabuf_free(wps_ie);
1039 return 0;
1040 }
1041
1042 /* TODO: overlap detection */
1043 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1044 "(Active PBC)");
1045 wpabuf_free(wps_ie);
1046 return 1;
1047 }
1048
1049 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1050 if (!wps_ie) {
1051 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1052 return 0;
1053 }
1054
1055 /*
1056 * Start with WPS APs that advertise our address as an
1057 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1058 * allow any WPS AP after couple of scans since some APs do not
1059 * set Selected Registrar attribute properly when using
1060 * external Registrar.
1061 */
1062 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1063 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1064 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1065 "without active PIN Registrar");
1066 wpabuf_free(wps_ie);
1067 return 0;
1068 }
1069 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1070 } else {
1071 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1072 "(Authorized MAC or Active PIN)");
1073 }
1074 wpabuf_free(wps_ie);
1075 return 1;
1076 }
1077
1078 if (wps_ie) {
1079 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1080 wpabuf_free(wps_ie);
1081 return 1;
1082 }
1083
1084 return -1;
1085 }
1086
1087
1088 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1089 struct wpa_ssid *ssid,
1090 struct wpa_scan_res *bss)
1091 {
1092 struct wpabuf *wps_ie = NULL;
1093 int ret = 0;
1094
1095 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1096 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1097 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1098 /* allow wildcard SSID for WPS PBC */
1099 ret = 1;
1100 }
1101 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1102 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1103 if (wps_ie &&
1104 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1105 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1106 /* allow wildcard SSID for WPS PIN */
1107 ret = 1;
1108 }
1109 }
1110
1111 if (!ret && ssid->bssid_set &&
1112 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1113 /* allow wildcard SSID due to hardcoded BSSID match */
1114 ret = 1;
1115 }
1116
1117 #ifdef CONFIG_WPS_STRICT
1118 if (wps_ie) {
1119 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1120 0) < 0)
1121 ret = 0;
1122 if (bss->beacon_ie_len) {
1123 struct wpabuf *bcn_wps;
1124 bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1125 bss, WPS_IE_VENDOR_TYPE);
1126 if (bcn_wps == NULL) {
1127 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1128 "missing from AP Beacon");
1129 ret = 0;
1130 } else {
1131 if (wps_validate_beacon(wps_ie) < 0)
1132 ret = 0;
1133 wpabuf_free(bcn_wps);
1134 }
1135 }
1136 }
1137 #endif /* CONFIG_WPS_STRICT */
1138
1139 wpabuf_free(wps_ie);
1140
1141 return ret;
1142 }
1143
1144
1145 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1146 struct wpa_bss *selected, struct wpa_ssid *ssid)
1147 {
1148 const u8 *sel_uuid, *uuid;
1149 struct wpabuf *wps_ie;
1150 int ret = 0;
1151 struct wpa_bss *bss;
1152
1153 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1154 return 0;
1155
1156 /* Make sure that only one AP is in active PBC mode */
1157 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1158 if (wps_ie)
1159 sel_uuid = wps_get_uuid_e(wps_ie);
1160 else
1161 sel_uuid = NULL;
1162
1163 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1164 struct wpabuf *ie;
1165 if (bss == selected)
1166 continue;
1167 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1168 if (!ie)
1169 continue;
1170 if (!wps_is_selected_pbc_registrar(ie)) {
1171 wpabuf_free(ie);
1172 continue;
1173 }
1174 uuid = wps_get_uuid_e(ie);
1175 if (sel_uuid == NULL || uuid == NULL ||
1176 os_memcmp(sel_uuid, uuid, 16) != 0) {
1177 ret = 1; /* PBC overlap */
1178 wpabuf_free(ie);
1179 break;
1180 }
1181
1182 /* TODO: verify that this is reasonable dual-band situation */
1183
1184 wpabuf_free(ie);
1185 }
1186
1187 wpabuf_free(wps_ie);
1188
1189 return ret;
1190 }
1191
1192
1193 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1194 {
1195 struct wpa_bss *bss;
1196
1197 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1198 return;
1199
1200 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1201 struct wpabuf *ie;
1202 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1203 if (!ie)
1204 continue;
1205 if (wps_is_selected_pbc_registrar(ie))
1206 wpa_msg_ctrl(wpa_s, MSG_INFO,
1207 WPS_EVENT_AP_AVAILABLE_PBC);
1208 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1209 wpa_msg_ctrl(wpa_s, MSG_INFO,
1210 WPS_EVENT_AP_AVAILABLE_AUTH);
1211 else if (wps_is_selected_pin_registrar(ie))
1212 wpa_msg_ctrl(wpa_s, MSG_INFO,
1213 WPS_EVENT_AP_AVAILABLE_PIN);
1214 else
1215 wpa_msg_ctrl(wpa_s, MSG_INFO,
1216 WPS_EVENT_AP_AVAILABLE);
1217 wpabuf_free(ie);
1218 break;
1219 }
1220 }
1221
1222
1223 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1224 {
1225 struct wpa_ssid *ssid;
1226
1227 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1228 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1229 return 1;
1230 }
1231
1232 return 0;
1233 }
1234
1235
1236 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1237 char *end)
1238 {
1239 struct wpabuf *wps_ie;
1240 int ret;
1241
1242 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1243 if (wps_ie == NULL)
1244 return 0;
1245
1246 ret = wps_attr_text(wps_ie, buf, end);
1247 wpabuf_free(wps_ie);
1248 return ret;
1249 }
1250
1251
1252 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1253 {
1254 #ifdef CONFIG_WPS_ER
1255 if (wpa_s->wps_er) {
1256 wps_er_refresh(wpa_s->wps_er);
1257 return 0;
1258 }
1259 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1260 if (wpa_s->wps_er == NULL)
1261 return -1;
1262 return 0;
1263 #else /* CONFIG_WPS_ER */
1264 return 0;
1265 #endif /* CONFIG_WPS_ER */
1266 }
1267
1268
1269 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1270 {
1271 #ifdef CONFIG_WPS_ER
1272 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1273 wpa_s->wps_er = NULL;
1274 #endif /* CONFIG_WPS_ER */
1275 return 0;
1276 }
1277
1278
1279 #ifdef CONFIG_WPS_ER
1280 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1281 const char *uuid, const char *pin)
1282 {
1283 u8 u[UUID_LEN];
1284 int any = 0;
1285
1286 if (os_strcmp(uuid, "any") == 0)
1287 any = 1;
1288 else if (uuid_str2bin(uuid, u))
1289 return -1;
1290 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1291 any ? NULL : u,
1292 (const u8 *) pin, os_strlen(pin), 300);
1293 }
1294
1295
1296 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1297 {
1298 u8 u[UUID_LEN];
1299
1300 if (uuid_str2bin(uuid, u))
1301 return -1;
1302 return wps_er_pbc(wpa_s->wps_er, u);
1303 }
1304
1305
1306 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1307 const char *pin)
1308 {
1309 u8 u[UUID_LEN];
1310
1311 if (uuid_str2bin(uuid, u))
1312 return -1;
1313 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1314 os_strlen(pin));
1315 }
1316
1317
1318 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1319 const char *pin, struct wps_new_ap_settings *settings)
1320 {
1321 u8 u[UUID_LEN];
1322 struct wps_credential cred;
1323 size_t len;
1324
1325 if (uuid_str2bin(uuid, u))
1326 return -1;
1327 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1328 settings->encr == NULL || settings->key_hex == NULL)
1329 return -1;
1330
1331 os_memset(&cred, 0, sizeof(cred));
1332 len = os_strlen(settings->ssid_hex);
1333 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1334 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1335 return -1;
1336 cred.ssid_len = len / 2;
1337
1338 len = os_strlen(settings->key_hex);
1339 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1340 hexstr2bin(settings->key_hex, cred.key, len / 2))
1341 return -1;
1342 cred.key_len = len / 2;
1343
1344 if (os_strcmp(settings->auth, "OPEN") == 0)
1345 cred.auth_type = WPS_AUTH_OPEN;
1346 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1347 cred.auth_type = WPS_AUTH_WPAPSK;
1348 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1349 cred.auth_type = WPS_AUTH_WPA2PSK;
1350 else
1351 return -1;
1352
1353 if (os_strcmp(settings->encr, "NONE") == 0)
1354 cred.encr_type = WPS_ENCR_NONE;
1355 else if (os_strcmp(settings->encr, "WEP") == 0)
1356 cred.encr_type = WPS_ENCR_WEP;
1357 else if (os_strcmp(settings->encr, "TKIP") == 0)
1358 cred.encr_type = WPS_ENCR_TKIP;
1359 else if (os_strcmp(settings->encr, "CCMP") == 0)
1360 cred.encr_type = WPS_ENCR_AES;
1361 else
1362 return -1;
1363
1364 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1365 os_strlen(pin), &cred);
1366 }
1367
1368
1369 static void wpas_wps_terminate_cb(void *ctx)
1370 {
1371 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1372 eloop_terminate();
1373 }
1374 #endif /* CONFIG_WPS_ER */
1375
1376
1377 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1378 {
1379 #ifdef CONFIG_WPS_ER
1380 if (wpa_s->wps_er) {
1381 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1382 wpa_s->wps_er = NULL;
1383 return 1;
1384 }
1385 #endif /* CONFIG_WPS_ER */
1386 return 0;
1387 }
1388
1389
1390 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1391 {
1392 struct wpa_ssid *ssid;
1393
1394 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1395 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1396 return 1;
1397 }
1398
1399 return 0;
1400 }
1401
1402
1403 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1404 {
1405 struct wps_context *wps = wpa_s->wps;
1406
1407 if (wps == NULL)
1408 return;
1409
1410 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1411 wps->config_methods = wps_config_methods_str2bin(
1412 wpa_s->conf->config_methods);
1413 if ((wps->config_methods &
1414 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1415 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1416 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1417 "config methods are not allowed at the "
1418 "same time");
1419 wps->config_methods &= ~WPS_CONFIG_LABEL;
1420 }
1421 }
1422
1423 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) {
1424 if (wpa_s->conf->device_type &&
1425 wps_dev_type_str2bin(wpa_s->conf->device_type,
1426 wps->dev.pri_dev_type) < 0)
1427 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
1428 }
1429
1430 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1431 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1432
1433 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) {
1434 if (is_nil_uuid(wpa_s->conf->uuid)) {
1435 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1436 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1437 "address", wps->uuid, WPS_UUID_LEN);
1438 } else
1439 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1440 }
1441
1442 if (wpa_s->conf->changed_parameters &
1443 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1444 /* Update pointers to make sure they refer current values */
1445 wps->dev.device_name = wpa_s->conf->device_name;
1446 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1447 wps->dev.model_name = wpa_s->conf->model_name;
1448 wps->dev.model_number = wpa_s->conf->model_number;
1449 wps->dev.serial_number = wpa_s->conf->serial_number;
1450 }
1451 }
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