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Rename struct wpa_driver_ops to hapd_driver_ops
[thirdparty/hostap.git] / wpa_supplicant / wps_supplicant.c
CommitLineData
fa201b69
JM		 1/*
2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008, 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 "ieee802_11_defs.h"
19#include "wpa_common.h"
20#include "config.h"
b01c18a8 21#include "eap_peer/eap.h"
fa201b69 22#include "wpa_supplicant_i.h"
fcc60db4 23#include "eloop.h"
79da74a2 24#include "uuid.h"
a524f05e 25#include "wpa_ctrl.h"
47662164 26#include "ctrl_iface_dbus.h"
fcc60db4 27#include "eap_common/eap_wsc_common.h"
a6099152 28#include "blacklist.h"
7cc1b6c9 29#include "wpa.h"
fa201b69 30#include "wps_supplicant.h"
46bdb83a 31#include "dh_groups.h"
fa201b69 32
a6099152 33#define WPS_PIN_SCAN_IGNORE_SEL_REG 3
fa201b69 34
fcc60db4 35static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
469fc3a4 36static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
fcc60db4
JM		 37
38
fa201b69
JM		 39int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
40{
a6099152
JM		 41 if (!wpa_s->wps_success &&
42 wpa_s->current_ssid &&
43 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
44 const u8 *bssid = wpa_s->bssid;
45 if (is_zero_ether_addr(bssid))
46 bssid = wpa_s->pending_bssid;
47
48 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
49 " did not succeed - continue trying to find "
50 "suitable AP", MAC2STR(bssid));
51 wpa_blacklist_add(wpa_s, bssid);
52
53 wpa_supplicant_deauthenticate(wpa_s,
54 WLAN_REASON_DEAUTH_LEAVING);
55 wpa_s->reassociate = 1;
56 wpa_supplicant_req_scan(wpa_s,
57 wpa_s->blacklist_cleared ? 5 : 0, 0);
58 wpa_s->blacklist_cleared = 0;
59 return 1;
60 }
61
fcc60db4
JM		 62 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
63
fa201b69
JM		 64 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
65 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
66 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
67 "try to associate with the received credential");
68 wpa_supplicant_deauthenticate(wpa_s,
69 WLAN_REASON_DEAUTH_LEAVING);
70 wpa_s->reassociate = 1;
71 wpa_supplicant_req_scan(wpa_s, 0, 0);
72 return 1;
73 }
74
47662164
JM		 75 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
76 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
77 "for external credential processing");
78 wpas_clear_wps(wpa_s);
79 wpa_supplicant_deauthenticate(wpa_s,
80 WLAN_REASON_DEAUTH_LEAVING);
81 return 1;
82 }
83
fa201b69
JM		 84 return 0;
85}
86
87
7cc1b6c9
JM		 88static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
89 struct wpa_ssid *ssid,
90 const struct wps_credential *cred)
91{
92 struct wpa_driver_capa capa;
93 size_t i;
94 struct wpa_scan_res *bss;
95 const u8 *ie;
96 struct wpa_ie_data adv;
97 int wpa2 = 0, ccmp = 0;
98
99 /*
100 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
101 * case they are configured for mixed mode operation (WPA+WPA2 and
102 * TKIP+CCMP). Try to use scan results to figure out whether the AP
103 * actually supports stronger security and select that if the client
104 * has support for it, too.
105 */
106
107 if (wpa_drv_get_capa(wpa_s, &capa))
108 return; /* Unknown what driver supports */
109
110 if (wpa_supplicant_get_scan_results(wpa_s) || wpa_s->scan_res == NULL)
111 return; /* Could not get scan results for checking advertised
112 * parameters */
113
114 for (i = 0; i < wpa_s->scan_res->num; i++) {
115 bss = wpa_s->scan_res->res[i];
116 if (os_memcmp(bss->bssid, cred->mac_addr, ETH_ALEN) != 0)
117 continue;
118 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
119 if (ie == NULL)
120 continue;
121 if (ie[1] != ssid->ssid_len || ssid->ssid == NULL ||
122 os_memcmp(ie + 2, ssid->ssid, ssid->ssid_len) != 0)
123 continue;
124
125 wpa_printf(MSG_DEBUG, "WPS: AP found from scan results");
126 break;
127 }
128
129 if (i == wpa_s->scan_res->num) {
130 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from scan "
131 "results - use credential as-is");
132 return;
133 }
134
135 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
136 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
137 wpa2 = 1;
138 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
139 ccmp = 1;
140 } else {
141 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
142 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
143 adv.pairwise_cipher & WPA_CIPHER_CCMP)
144 ccmp = 1;
145 }
146
147 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
148 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
149 /*
150 * TODO: This could be the initial AP configuration and the
151 * Beacon contents could change shortly. Should request a new
152 * scan and delay addition of the network until the updated
153 * scan results are available.
154 */
155 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
156 "support - use credential as-is");
157 return;
158 }
159
160 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
161 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
162 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
163 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
164 "based on scan results");
165 if (wpa_s->conf->ap_scan == 1)
166 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
167 else
168 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
169 }
170
171 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
172 (ssid->proto & WPA_PROTO_WPA) &&
173 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
174 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
175 "based on scan results");
176 if (wpa_s->conf->ap_scan == 1)
177 ssid->proto |= WPA_PROTO_RSN;
178 else
179 ssid->proto = WPA_PROTO_RSN;
180 }
181}
182
183
bcbbc7af
JM		 184static int wpa_supplicant_wps_cred(void *ctx,
185 const struct wps_credential *cred)
fa201b69
JM		 186{
187 struct wpa_supplicant *wpa_s = ctx;
188 struct wpa_ssid *ssid = wpa_s->current_ssid;
522b5b6e 189 u8 key_idx = 0;
fa201b69 190
47662164
JM		 191 if ((wpa_s->conf->wps_cred_processing == 1 ||
192 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
193 size_t blen = cred->cred_attr_len * 2 + 1;
194 char *buf = os_malloc(blen);
195 if (buf) {
196 wpa_snprintf_hex(buf, blen,
197 cred->cred_attr, cred->cred_attr_len);
198 wpa_msg(wpa_s, MSG_INFO, "%s%s",
199 WPS_EVENT_CRED_RECEIVED, buf);
200 os_free(buf);
201 }
202 wpa_supplicant_dbus_notify_wps_cred(wpa_s, cred);
203 } else
204 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
fa201b69 205
eca6e0a9
JM		 206 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
207 cred->cred_attr, cred->cred_attr_len);
208
47662164
JM		 209 if (wpa_s->conf->wps_cred_processing == 1)
210 return 0;
211
f286077d
JM		 212 if (cred->auth_type != WPS_AUTH_OPEN &&
213 cred->auth_type != WPS_AUTH_SHARED &&
214 cred->auth_type != WPS_AUTH_WPAPSK &&
215 cred->auth_type != WPS_AUTH_WPA2PSK) {
216 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
217 "unsupported authentication type %d",
218 cred->auth_type);
219 return 0;
220 }
221
fa201b69
JM		 222 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
223 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
224 "on the received credential");
225 os_free(ssid->eap.identity);
226 ssid->eap.identity = NULL;
227 ssid->eap.identity_len = 0;
228 os_free(ssid->eap.phase1);
229 ssid->eap.phase1 = NULL;
230 os_free(ssid->eap.eap_methods);
231 ssid->eap.eap_methods = NULL;
232 } else {
233 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
234 "received credential");
235 ssid = wpa_config_add_network(wpa_s->conf);
236 if (ssid == NULL)
237 return -1;
238 }
239
240 wpa_config_set_network_defaults(ssid);
241
242 os_free(ssid->ssid);
243 ssid->ssid = os_malloc(cred->ssid_len);
244 if (ssid->ssid) {
245 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
246 ssid->ssid_len = cred->ssid_len;
247 }
248
249 switch (cred->encr_type) {
250 case WPS_ENCR_NONE:
fa201b69
JM		 251 break;
252 case WPS_ENCR_WEP:
4b195a1b
AT		 253 if (cred->key_len <= 0)
254 break;
255 if (cred->key_len != 5 && cred->key_len != 13 &&
256 cred->key_len != 10 && cred->key_len != 26) {
257 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
258 "%lu", (unsigned long) cred->key_len);
259 return -1;
260 }
522b5b6e 261 if (cred->key_idx > NUM_WEP_KEYS) {
4b195a1b
AT		 262 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
263 cred->key_idx);
264 return -1;
265 }
522b5b6e
AT		 266 if (cred->key_idx)
267 key_idx = cred->key_idx - 1;
4b195a1b
AT		 268 if (cred->key_len == 10 || cred->key_len == 26) {
269 if (hexstr2bin((char *) cred->key,
270 ssid->wep_key[key_idx],
271 cred->key_len / 2) < 0) {
272 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
273 "%d", key_idx);
274 return -1;
275 }
276 ssid->wep_key_len[key_idx] = cred->key_len / 2;
277 } else {
278 os_memcpy(ssid->wep_key[key_idx], cred->key,
fa201b69 279 cred->key_len);
4b195a1b 280 ssid->wep_key_len[key_idx] = cred->key_len;
fa201b69 281 }
4b195a1b 282 ssid->wep_tx_keyidx = key_idx;
fa201b69
JM		 283 break;
284 case WPS_ENCR_TKIP:
285 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
fa201b69
JM		 286 break;
287 case WPS_ENCR_AES:
288 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
fa201b69
JM		 289 break;
290 }
291
292 switch (cred->auth_type) {
293 case WPS_AUTH_OPEN:
294 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
295 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
296 ssid->proto = 0;
297 break;
298 case WPS_AUTH_SHARED:
299 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
300 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
301 ssid->proto = 0;
302 break;
303 case WPS_AUTH_WPAPSK:
304 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
305 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
306 ssid->proto = WPA_PROTO_WPA;
307 break;
308 case WPS_AUTH_WPA:
309 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
310 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
311 ssid->proto = WPA_PROTO_WPA;
312 break;
313 case WPS_AUTH_WPA2:
314 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
315 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
316 ssid->proto = WPA_PROTO_RSN;
317 break;
318 case WPS_AUTH_WPA2PSK:
319 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
320 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
321 ssid->proto = WPA_PROTO_RSN;
322 break;
323 }
324
325 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
326 if (cred->key_len == 2 * PMK_LEN) {
327 if (hexstr2bin((const char *) cred->key, ssid->psk,
328 PMK_LEN)) {
329 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
330 "Key");
331 return -1;
332 }
333 ssid->psk_set = 1;
334 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
335 os_free(ssid->passphrase);
336 ssid->passphrase = os_malloc(cred->key_len + 1);
337 if (ssid->passphrase == NULL)
338 return -1;
339 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
340 ssid->passphrase[cred->key_len] = '\0';
341 wpa_config_update_psk(ssid);
342 } else {
343 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
344 "length %lu",
345 (unsigned long) cred->key_len);
346 return -1;
347 }
348 }
349
7cc1b6c9
JM		 350 wpas_wps_security_workaround(wpa_s, ssid, cred);
351
fa201b69
JM		 352#ifndef CONFIG_NO_CONFIG_WRITE
353 if (wpa_s->conf->update_config &&
354 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
355 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
356 return -1;
357 }
358#endif /* CONFIG_NO_CONFIG_WRITE */
359
360 return 0;
361}
362
363
4b68290e
JM		 364static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
365 struct wps_event_m2d *m2d)
366{
367 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
368 "dev_password_id=%d config_error=%d",
369 m2d->dev_password_id, m2d->config_error);
370}
371
372
469fc3a4
JM		 373static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
374 struct wps_event_fail *fail)
375{
376 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
377 wpas_clear_wps(wpa_s);
378}
379
380
ad5302a1
JM		 381static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
382{
383 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
a6099152 384 wpa_s->wps_success = 1;
ad5302a1
JM		 385}
386
387
4b68290e
JM		 388static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
389 union wps_event_data *data)
390{
391 struct wpa_supplicant *wpa_s = ctx;
392 switch (event) {
393 case WPS_EV_M2D:
394 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
395 break;
469fc3a4
JM		 396 case WPS_EV_FAIL:
397 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
398 break;
ad5302a1
JM		 399 case WPS_EV_SUCCESS:
400 wpa_supplicant_wps_event_success(wpa_s);
401 break;
3b2cf800
JM		 402 case WPS_EV_PWD_AUTH_FAIL:
403 break;
4b68290e
JM		 404 }
405}
406
407
f90c86d4 408enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
fa201b69 409{
b01c18a8
JM		 410 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
411 eap_is_wps_pin_enrollee(&ssid->eap))
412 return WPS_REQ_ENROLLEE;
413 else
414 return WPS_REQ_REGISTRAR;
fa201b69 415}
116654ce
JM		 416
417
fcc60db4
JM		 418static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
419{
420 int id;
421 struct wpa_ssid *ssid;
422
423 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
424
425 /* Remove any existing WPS network from configuration */
426 ssid = wpa_s->conf->ssid;
427 while (ssid) {
f0477201
JM		 428 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
429 if (ssid == wpa_s->current_ssid)
430 wpa_s->current_ssid = NULL;
fcc60db4 431 id = ssid->id;
f0477201 432 } else
fcc60db4
JM		 433 id = -1;
434 ssid = ssid->next;
435 if (id >= 0)
436 wpa_config_remove_network(wpa_s->conf, id);
437 }
438}
439
440
441static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
442{
443 struct wpa_supplicant *wpa_s = eloop_ctx;
a6099152
JM		 444 wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
445 "out");
fcc60db4
JM		 446 wpas_clear_wps(wpa_s);
447}
448
449
450static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
451 int registrar, const u8 *bssid)
452{
453 struct wpa_ssid *ssid;
454
455 ssid = wpa_config_add_network(wpa_s->conf);
456 if (ssid == NULL)
457 return NULL;
458 wpa_config_set_network_defaults(ssid);
459 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
460 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
461 wpa_config_set(ssid, "identity", registrar ?
462 "\"" WSC_ID_REGISTRAR "\"" :
463 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
464 wpa_config_remove_network(wpa_s->conf, ssid->id);
465 return NULL;
466 }
467
468 if (bssid) {
469 size_t i;
470 struct wpa_scan_res *res;
471
472 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
24c23d1b 473 ssid->bssid_set = 1;
fcc60db4
JM		 474
475 /* Try to get SSID from scan results */
476 if (wpa_s->scan_res == NULL &&
477 wpa_supplicant_get_scan_results(wpa_s) < 0)
478 return ssid; /* Could not find any scan results */
479
480 for (i = 0; i < wpa_s->scan_res->num; i++) {
481 const u8 *ie;
482
483 res = wpa_s->scan_res->res[i];
484 if (os_memcmp(bssid, res->bssid, ETH_ALEN) != 0)
485 continue;
486
487 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
488 if (ie == NULL)
489 break;
490 os_free(ssid->ssid);
491 ssid->ssid = os_malloc(ie[1]);
492 if (ssid->ssid == NULL)
493 break;
494 os_memcpy(ssid->ssid, ie + 2, ie[1]);
495 ssid->ssid_len = ie[1];
496 break;
497 }
498 }
499
500 return ssid;
501}
502
503
504static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
505 struct wpa_ssid *selected)
506{
507 struct wpa_ssid *ssid;
508
509 /* Mark all other networks disabled and trigger reassociation */
510 ssid = wpa_s->conf->ssid;
511 while (ssid) {
512 ssid->disabled = ssid != selected;
513 ssid = ssid->next;
514 }
515 wpa_s->disconnected = 0;
516 wpa_s->reassociate = 1;
a6099152
JM		 517 wpa_s->scan_runs = 0;
518 wpa_s->wps_success = 0;
519 wpa_s->blacklist_cleared = 0;
fcc60db4
JM		 520 wpa_supplicant_req_scan(wpa_s, 0, 0);
521}
522
523
524int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
525{
526 struct wpa_ssid *ssid;
527 wpas_clear_wps(wpa_s);
528 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
529 if (ssid == NULL)
530 return -1;
531 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
532 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
533 wpa_s, NULL);
534 wpas_wps_reassoc(wpa_s, ssid);
535 return 0;
536}
537
538
539int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
540 const char *pin)
541{
542 struct wpa_ssid *ssid;
46bdb83a 543 char val[128];
fcc60db4
JM		 544 unsigned int rpin = 0;
545
546 wpas_clear_wps(wpa_s);
547 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
548 if (ssid == NULL)
549 return -1;
550 if (pin)
551 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
552 else {
553 rpin = wps_generate_pin();
554 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
555 }
556 wpa_config_set(ssid, "phase1", val, 0);
557 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
558 wpa_s, NULL);
559 wpas_wps_reassoc(wpa_s, ssid);
560 return rpin;
561}
562
563
116f7bb0 564#ifdef CONFIG_WPS_OOB
46bdb83a 565int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
e1ee6b60 566 char *path, char *method, char *name)
46bdb83a
MH		 567{
568 struct wps_context *wps = wpa_s->wps;
7cbf51bb 569 struct oob_device_data *oob_dev;
46bdb83a 570
7cbf51bb
JM		 571 oob_dev = wps_get_oob_device(device_type);
572 if (oob_dev == NULL)
46bdb83a 573 return -1;
7cbf51bb 574 oob_dev->device_path = path;
e1ee6b60 575 oob_dev->device_name = name;
46bdb83a
MH		 576 wps->oob_conf.oob_method = wps_get_oob_method(method);
577
d5e2b2d2
JM		 578 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
579 /*
580 * Use pre-configured DH keys in order to be able to write the
581 * key hash into the OOB file.
582 */
583 wpabuf_free(wps->dh_pubkey);
584 wpabuf_free(wps->dh_privkey);
585 wps->dh_privkey = NULL;
586 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
587 &wps->dh_privkey);
588 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
589 if (wps->dh_pubkey == NULL) {
590 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
591 "Diffie-Hellman handshake");
592 return -1;
593 }
594 }
595
46bdb83a
MH		 596 if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
597 wpas_clear_wps(wpa_s);
598
7cbf51bb 599 if (wps_process_oob(wps, oob_dev, 0) < 0)
46bdb83a
MH		 600 return -1;
601
602 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
603 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
604 wpas_wps_start_pin(wpa_s, NULL,
605 wpabuf_head(wps->oob_conf.dev_password)) < 0)
606 return -1;
607
608 return 0;
609}
116f7bb0 610#endif /* CONFIG_WPS_OOB */
46bdb83a
MH		 611
612
fcc60db4
JM		 613int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
614 const char *pin)
615{
616 struct wpa_ssid *ssid;
617 char val[30];
618
619 if (!pin)
620 return -1;
621 wpas_clear_wps(wpa_s);
622 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
623 if (ssid == NULL)
624 return -1;
625 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
626 wpa_config_set(ssid, "phase1", val, 0);
627 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
628 wpa_s, NULL);
629 wpas_wps_reassoc(wpa_s, ssid);
630 return 0;
631}
632
633
c5adf528
JM		 634static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
635 size_t psk_len)
636{
637 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
638 "STA " MACSTR, MAC2STR(mac_addr));
639 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
640
641 /* TODO */
642
643 return 0;
644}
645
646
647static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
648 const struct wps_device_data *dev)
649{
650 char uuid[40], txt[400];
651 int len;
652 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
653 return;
654 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
655 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
656 " [%s|%s|%s|%s|%s|%d-%08X-%d]",
657 uuid, MAC2STR(dev->mac_addr), dev->device_name,
658 dev->manufacturer, dev->model_name,
659 dev->model_number, dev->serial_number,
660 dev->categ, dev->oui, dev->sub_categ);
661 if (len > 0 && len < (int) sizeof(txt))
662 wpa_printf(MSG_INFO, "%s", txt);
663}
664
665
116654ce
JM		 666int wpas_wps_init(struct wpa_supplicant *wpa_s)
667{
668 struct wps_context *wps;
c5adf528 669 struct wps_registrar_config rcfg;
116654ce
JM		 670
671 wps = os_zalloc(sizeof(*wps));
672 if (wps == NULL)
673 return -1;
674
675 wps->cred_cb = wpa_supplicant_wps_cred;
4b68290e 676 wps->event_cb = wpa_supplicant_wps_event;
116654ce
JM		 677 wps->cb_ctx = wpa_s;
678
3c0b7aa4
JM		 679 wps->dev.device_name = wpa_s->conf->device_name;
680 wps->dev.manufacturer = wpa_s->conf->manufacturer;
681 wps->dev.model_name = wpa_s->conf->model_name;
682 wps->dev.model_number = wpa_s->conf->model_number;
683 wps->dev.serial_number = wpa_s->conf->serial_number;
684 if (wpa_s->conf->device_type) {
685 char *pos;
686 u8 oui[4];
687 /* <categ>-<OUI>-<subcateg> */
688 wps->dev.categ = atoi(wpa_s->conf->device_type);
689 pos = os_strchr(wpa_s->conf->device_type, '-');
690 if (pos == NULL) {
691 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
692 os_free(wps);
693 return -1;
694 }
695 pos++;
696 if (hexstr2bin(pos, oui, 4)) {
697 wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
698 os_free(wps);
699 return -1;
700 }
701 wps->dev.oui = WPA_GET_BE32(oui);
702 pos = os_strchr(pos, '-');
703 if (pos == NULL) {
704 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
705 os_free(wps);
706 return -1;
707 }
708 pos++;
709 wps->dev.sub_categ = atoi(pos);
710 }
711 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
712 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
398cfbf6 713 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
79da74a2
JM		 714 if (is_nil_uuid(wpa_s->conf->uuid)) {
715 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
716 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
717 wps->uuid, WPS_UUID_LEN);
718 } else
719 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
116654ce 720
c5adf528
JM		 721 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
722 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
723
724 os_memset(&rcfg, 0, sizeof(rcfg));
725 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
726 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
727 rcfg.cb_ctx = wpa_s;
728
729 wps->registrar = wps_registrar_init(wps, &rcfg);
730 if (wps->registrar == NULL) {
731 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
732 os_free(wps);
733 return -1;
734 }
735
116654ce
JM		 736 wpa_s->wps = wps;
737
738 return 0;
739}
740
741
742void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
743{
fcc60db4
JM		 744 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
745
116654ce
JM		 746 if (wpa_s->wps == NULL)
747 return;
748
c5adf528 749 wps_registrar_deinit(wpa_s->wps->registrar);
46bdb83a
MH		 750 wpabuf_free(wpa_s->wps->dh_pubkey);
751 wpabuf_free(wpa_s->wps->dh_privkey);
752 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
753 wpabuf_free(wpa_s->wps->oob_conf.dev_password);
116654ce
JM		 754 os_free(wpa_s->wps->network_key);
755 os_free(wpa_s->wps);
756 wpa_s->wps = NULL;
757}
351f09a2
JM		 758
759
a6099152
JM		 760int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
761 struct wpa_ssid *ssid, struct wpa_scan_res *bss)
351f09a2
JM		 762{
763 struct wpabuf *wps_ie;
764
765 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
766 return -1;
767
768 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
769 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
770 if (!wps_ie) {
771 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
772 return 0;
773 }
774
775 if (!wps_is_selected_pbc_registrar(wps_ie)) {
776 wpa_printf(MSG_DEBUG, " skip - WPS AP "
777 "without active PBC Registrar");
778 wpabuf_free(wps_ie);
779 return 0;
780 }
781
782 /* TODO: overlap detection */
783 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
784 "(Active PBC)");
785 wpabuf_free(wps_ie);
786 return 1;
787 }
788
789 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
790 if (!wps_ie) {
791 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
792 return 0;
793 }
794
a6099152
JM		 795 /*
796 * Start with WPS APs that advertise active PIN Registrar and
797 * allow any WPS AP after third scan since some APs do not set
798 * Selected Registrar attribute properly when using external
799 * Registrar.
800 */
351f09a2 801 if (!wps_is_selected_pin_registrar(wps_ie)) {
a6099152
JM		 802 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
803 wpa_printf(MSG_DEBUG, " skip - WPS AP "
804 "without active PIN Registrar");
805 wpabuf_free(wps_ie);
806 return 0;
807 }
808 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
809 } else {
810 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
811 "(Active PIN)");
351f09a2 812 }
351f09a2
JM		 813 wpabuf_free(wps_ie);
814 return 1;
815 }
816
817 if (wps_ie) {
818 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
819 wpabuf_free(wps_ie);
820 return 1;
821 }
822
823 return -1;
824}
825
826
a6099152
JM		 827int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
828 struct wpa_ssid *ssid,
351f09a2
JM		 829 struct wpa_scan_res *bss)
830{
831 struct wpabuf *wps_ie = NULL;
832 int ret = 0;
833
834 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
835 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
836 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
837 /* allow wildcard SSID for WPS PBC */
838 ret = 1;
839 }
840 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
841 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
a6099152
JM		 842 if (wps_ie &&
843 (wps_is_selected_pin_registrar(wps_ie) ||
844 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
351f09a2
JM		 845 /* allow wildcard SSID for WPS PIN */
846 ret = 1;
847 }
848 }
849
24c23d1b
JM		 850 if (!ret && ssid->bssid_set &&
851 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
852 /* allow wildcard SSID due to hardcoded BSSID match */
853 ret = 1;
854 }
855
351f09a2
JM		 856 wpabuf_free(wps_ie);
857
858 return ret;
859}
860
861
862int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
863 struct wpa_scan_res *selected,
864 struct wpa_ssid *ssid)
865{
866 const u8 *sel_uuid, *uuid;
867 size_t i;
868 struct wpabuf *wps_ie;
869 int ret = 0;
870
871 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
872 return 0;
873
874 /* Make sure that only one AP is in active PBC mode */
875 wps_ie = wpa_scan_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
876 if (wps_ie)
877 sel_uuid = wps_get_uuid_e(wps_ie);
878 else
879 sel_uuid = NULL;
351f09a2
JM		 880
881 for (i = 0; i < wpa_s->scan_res->num; i++) {
882 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
883 struct wpabuf *ie;
884 if (bss == selected)
885 continue;
886 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
887 if (!ie)
888 continue;
889 if (!wps_is_selected_pbc_registrar(ie)) {
890 wpabuf_free(ie);
891 continue;
892 }
893 uuid = wps_get_uuid_e(ie);
44cd430f
JM		 894 if (sel_uuid == NULL || uuid == NULL ||
895 os_memcmp(sel_uuid, uuid, 16) != 0) {
351f09a2
JM		 896 ret = 1; /* PBC overlap */
897 wpabuf_free(ie);
898 break;
899 }
900
901 /* TODO: verify that this is reasonable dual-band situation */
484957ae
JM		 902
903 wpabuf_free(ie);
351f09a2
JM		 904 }
905
906 wpabuf_free(wps_ie);
907
908 return ret;
909}
a524f05e
JM		 910
911
912void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
913{
914 size_t i;
915
916 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
917 return;
918
919 for (i = 0; i < wpa_s->scan_res->num; i++) {
920 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
921 struct wpabuf *ie;
922 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
923 if (!ie)
924 continue;
925 if (wps_is_selected_pbc_registrar(ie))
926 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
927 else if (wps_is_selected_pin_registrar(ie))
928 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
929 else
930 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
931 wpabuf_free(ie);
932 break;
933 }
934}
24c23d1b
JM		 935
936
937int wpas_wps_searching(struct wpa_supplicant *wpa_s)
938{
939 struct wpa_ssid *ssid;
940
941 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
942 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
943 return 1;
944 }
945
946 return 0;
947}
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