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WPS: support registration with APs in WEP security mode
[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"
fa201b69
JM		 29#include "wps_supplicant.h"
30
a6099152 31#define WPS_PIN_SCAN_IGNORE_SEL_REG 3
fa201b69 32
fcc60db4 33static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
469fc3a4 34static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
fcc60db4
JM		 35
36
fa201b69
JM		 37int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
38{
a6099152
JM		 39 if (!wpa_s->wps_success &&
40 wpa_s->current_ssid &&
41 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
42 const u8 *bssid = wpa_s->bssid;
43 if (is_zero_ether_addr(bssid))
44 bssid = wpa_s->pending_bssid;
45
46 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
47 " did not succeed - continue trying to find "
48 "suitable AP", MAC2STR(bssid));
49 wpa_blacklist_add(wpa_s, bssid);
50
51 wpa_supplicant_deauthenticate(wpa_s,
52 WLAN_REASON_DEAUTH_LEAVING);
53 wpa_s->reassociate = 1;
54 wpa_supplicant_req_scan(wpa_s,
55 wpa_s->blacklist_cleared ? 5 : 0, 0);
56 wpa_s->blacklist_cleared = 0;
57 return 1;
58 }
59
fcc60db4
JM		 60 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
61
fa201b69
JM		 62 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
63 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
64 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
65 "try to associate with the received credential");
66 wpa_supplicant_deauthenticate(wpa_s,
67 WLAN_REASON_DEAUTH_LEAVING);
68 wpa_s->reassociate = 1;
69 wpa_supplicant_req_scan(wpa_s, 0, 0);
70 return 1;
71 }
72
47662164
JM		 73 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
74 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
75 "for external credential processing");
76 wpas_clear_wps(wpa_s);
77 wpa_supplicant_deauthenticate(wpa_s,
78 WLAN_REASON_DEAUTH_LEAVING);
79 return 1;
80 }
81
fa201b69
JM		 82 return 0;
83}
84
85
bcbbc7af
JM		 86static int wpa_supplicant_wps_cred(void *ctx,
87 const struct wps_credential *cred)
fa201b69
JM		 88{
89 struct wpa_supplicant *wpa_s = ctx;
90 struct wpa_ssid *ssid = wpa_s->current_ssid;
91
47662164
JM		 92 if ((wpa_s->conf->wps_cred_processing == 1 ||
93 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
94 size_t blen = cred->cred_attr_len * 2 + 1;
95 char *buf = os_malloc(blen);
96 if (buf) {
97 wpa_snprintf_hex(buf, blen,
98 cred->cred_attr, cred->cred_attr_len);
99 wpa_msg(wpa_s, MSG_INFO, "%s%s",
100 WPS_EVENT_CRED_RECEIVED, buf);
101 os_free(buf);
102 }
103 wpa_supplicant_dbus_notify_wps_cred(wpa_s, cred);
104 } else
105 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
fa201b69 106
eca6e0a9
JM		 107 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
108 cred->cred_attr, cred->cred_attr_len);
109
47662164
JM		 110 if (wpa_s->conf->wps_cred_processing == 1)
111 return 0;
112
f286077d
JM		 113 if (cred->auth_type != WPS_AUTH_OPEN &&
114 cred->auth_type != WPS_AUTH_SHARED &&
115 cred->auth_type != WPS_AUTH_WPAPSK &&
116 cred->auth_type != WPS_AUTH_WPA2PSK) {
117 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
118 "unsupported authentication type %d",
119 cred->auth_type);
120 return 0;
121 }
122
fa201b69
JM		 123 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
124 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
125 "on the received credential");
126 os_free(ssid->eap.identity);
127 ssid->eap.identity = NULL;
128 ssid->eap.identity_len = 0;
129 os_free(ssid->eap.phase1);
130 ssid->eap.phase1 = NULL;
131 os_free(ssid->eap.eap_methods);
132 ssid->eap.eap_methods = NULL;
133 } else {
134 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
135 "received credential");
136 ssid = wpa_config_add_network(wpa_s->conf);
137 if (ssid == NULL)
138 return -1;
139 }
140
141 wpa_config_set_network_defaults(ssid);
142
143 os_free(ssid->ssid);
144 ssid->ssid = os_malloc(cred->ssid_len);
145 if (ssid->ssid) {
146 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
147 ssid->ssid_len = cred->ssid_len;
148 }
149
150 switch (cred->encr_type) {
151 case WPS_ENCR_NONE:
fa201b69
JM		 152 break;
153 case WPS_ENCR_WEP:
fa201b69
JM		 154 if (cred->key_len > 0 && cred->key_len <= MAX_WEP_KEY_LEN &&
155 cred->key_idx < NUM_WEP_KEYS) {
156 os_memcpy(ssid->wep_key[cred->key_idx], cred->key,
157 cred->key_len);
158 ssid->wep_key_len[cred->key_idx] = cred->key_len;
159 ssid->wep_tx_keyidx = cred->key_idx;
160 }
161 break;
162 case WPS_ENCR_TKIP:
163 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
fa201b69
JM		 164 break;
165 case WPS_ENCR_AES:
166 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
fa201b69
JM		 167 break;
168 }
169
170 switch (cred->auth_type) {
171 case WPS_AUTH_OPEN:
172 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
173 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
174 ssid->proto = 0;
175 break;
176 case WPS_AUTH_SHARED:
177 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
178 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
179 ssid->proto = 0;
180 break;
181 case WPS_AUTH_WPAPSK:
182 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
183 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
184 ssid->proto = WPA_PROTO_WPA;
185 break;
186 case WPS_AUTH_WPA:
187 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
188 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
189 ssid->proto = WPA_PROTO_WPA;
190 break;
191 case WPS_AUTH_WPA2:
192 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
193 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
194 ssid->proto = WPA_PROTO_RSN;
195 break;
196 case WPS_AUTH_WPA2PSK:
197 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
198 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
199 ssid->proto = WPA_PROTO_RSN;
200 break;
201 }
202
203 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
204 if (cred->key_len == 2 * PMK_LEN) {
205 if (hexstr2bin((const char *) cred->key, ssid->psk,
206 PMK_LEN)) {
207 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
208 "Key");
209 return -1;
210 }
211 ssid->psk_set = 1;
212 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
213 os_free(ssid->passphrase);
214 ssid->passphrase = os_malloc(cred->key_len + 1);
215 if (ssid->passphrase == NULL)
216 return -1;
217 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
218 ssid->passphrase[cred->key_len] = '\0';
219 wpa_config_update_psk(ssid);
220 } else {
221 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
222 "length %lu",
223 (unsigned long) cred->key_len);
224 return -1;
225 }
226 }
227
228#ifndef CONFIG_NO_CONFIG_WRITE
229 if (wpa_s->conf->update_config &&
230 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
231 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
232 return -1;
233 }
234#endif /* CONFIG_NO_CONFIG_WRITE */
235
236 return 0;
237}
238
239
4b68290e
JM		 240static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
241 struct wps_event_m2d *m2d)
242{
243 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
244 "dev_password_id=%d config_error=%d",
245 m2d->dev_password_id, m2d->config_error);
246}
247
248
469fc3a4
JM		 249static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
250 struct wps_event_fail *fail)
251{
252 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
253 wpas_clear_wps(wpa_s);
254}
255
256
ad5302a1
JM		 257static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
258{
259 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
a6099152 260 wpa_s->wps_success = 1;
ad5302a1
JM		 261}
262
263
4b68290e
JM		 264static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
265 union wps_event_data *data)
266{
267 struct wpa_supplicant *wpa_s = ctx;
268 switch (event) {
269 case WPS_EV_M2D:
270 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
271 break;
469fc3a4
JM		 272 case WPS_EV_FAIL:
273 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
274 break;
ad5302a1
JM		 275 case WPS_EV_SUCCESS:
276 wpa_supplicant_wps_event_success(wpa_s);
277 break;
3b2cf800
JM		 278 case WPS_EV_PWD_AUTH_FAIL:
279 break;
4b68290e
JM		 280 }
281}
282
283
f90c86d4 284enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
fa201b69 285{
b01c18a8
JM		 286 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
287 eap_is_wps_pin_enrollee(&ssid->eap))
288 return WPS_REQ_ENROLLEE;
289 else
290 return WPS_REQ_REGISTRAR;
fa201b69 291}
116654ce
JM		 292
293
fcc60db4
JM		 294static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
295{
296 int id;
297 struct wpa_ssid *ssid;
298
299 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
300
301 /* Remove any existing WPS network from configuration */
302 ssid = wpa_s->conf->ssid;
303 while (ssid) {
f0477201
JM		 304 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
305 if (ssid == wpa_s->current_ssid)
306 wpa_s->current_ssid = NULL;
fcc60db4 307 id = ssid->id;
f0477201 308 } else
fcc60db4
JM		 309 id = -1;
310 ssid = ssid->next;
311 if (id >= 0)
312 wpa_config_remove_network(wpa_s->conf, id);
313 }
314}
315
316
317static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
318{
319 struct wpa_supplicant *wpa_s = eloop_ctx;
a6099152
JM		 320 wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
321 "out");
fcc60db4
JM		 322 wpas_clear_wps(wpa_s);
323}
324
325
326static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
327 int registrar, const u8 *bssid)
328{
329 struct wpa_ssid *ssid;
330
331 ssid = wpa_config_add_network(wpa_s->conf);
332 if (ssid == NULL)
333 return NULL;
334 wpa_config_set_network_defaults(ssid);
335 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
336 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
337 wpa_config_set(ssid, "identity", registrar ?
338 "\"" WSC_ID_REGISTRAR "\"" :
339 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
340 wpa_config_remove_network(wpa_s->conf, ssid->id);
341 return NULL;
342 }
343
344 if (bssid) {
345 size_t i;
346 struct wpa_scan_res *res;
347
348 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
24c23d1b 349 ssid->bssid_set = 1;
fcc60db4
JM		 350
351 /* Try to get SSID from scan results */
352 if (wpa_s->scan_res == NULL &&
353 wpa_supplicant_get_scan_results(wpa_s) < 0)
354 return ssid; /* Could not find any scan results */
355
356 for (i = 0; i < wpa_s->scan_res->num; i++) {
357 const u8 *ie;
358
359 res = wpa_s->scan_res->res[i];
360 if (os_memcmp(bssid, res->bssid, ETH_ALEN) != 0)
361 continue;
362
363 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
364 if (ie == NULL)
365 break;
366 os_free(ssid->ssid);
367 ssid->ssid = os_malloc(ie[1]);
368 if (ssid->ssid == NULL)
369 break;
370 os_memcpy(ssid->ssid, ie + 2, ie[1]);
371 ssid->ssid_len = ie[1];
372 break;
373 }
374 }
375
376 return ssid;
377}
378
379
380static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
381 struct wpa_ssid *selected)
382{
383 struct wpa_ssid *ssid;
384
385 /* Mark all other networks disabled and trigger reassociation */
386 ssid = wpa_s->conf->ssid;
387 while (ssid) {
388 ssid->disabled = ssid != selected;
389 ssid = ssid->next;
390 }
391 wpa_s->disconnected = 0;
392 wpa_s->reassociate = 1;
a6099152
JM		 393 wpa_s->scan_runs = 0;
394 wpa_s->wps_success = 0;
395 wpa_s->blacklist_cleared = 0;
fcc60db4
JM		 396 wpa_supplicant_req_scan(wpa_s, 0, 0);
397}
398
399
400int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
401{
402 struct wpa_ssid *ssid;
403 wpas_clear_wps(wpa_s);
404 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
405 if (ssid == NULL)
406 return -1;
407 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
408 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
409 wpa_s, NULL);
410 wpas_wps_reassoc(wpa_s, ssid);
411 return 0;
412}
413
414
415int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
416 const char *pin)
417{
418 struct wpa_ssid *ssid;
419 char val[30];
420 unsigned int rpin = 0;
421
422 wpas_clear_wps(wpa_s);
423 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
424 if (ssid == NULL)
425 return -1;
426 if (pin)
427 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
428 else {
429 rpin = wps_generate_pin();
430 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
431 }
432 wpa_config_set(ssid, "phase1", val, 0);
433 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
434 wpa_s, NULL);
435 wpas_wps_reassoc(wpa_s, ssid);
436 return rpin;
437}
438
439
440int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
441 const char *pin)
442{
443 struct wpa_ssid *ssid;
444 char val[30];
445
446 if (!pin)
447 return -1;
448 wpas_clear_wps(wpa_s);
449 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
450 if (ssid == NULL)
451 return -1;
452 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
453 wpa_config_set(ssid, "phase1", val, 0);
454 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
455 wpa_s, NULL);
456 wpas_wps_reassoc(wpa_s, ssid);
457 return 0;
458}
459
460
c5adf528
JM		 461static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
462 size_t psk_len)
463{
464 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
465 "STA " MACSTR, MAC2STR(mac_addr));
466 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
467
468 /* TODO */
469
470 return 0;
471}
472
473
474static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
475 const struct wps_device_data *dev)
476{
477 char uuid[40], txt[400];
478 int len;
479 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
480 return;
481 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
482 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
483 " [%s|%s|%s|%s|%s|%d-%08X-%d]",
484 uuid, MAC2STR(dev->mac_addr), dev->device_name,
485 dev->manufacturer, dev->model_name,
486 dev->model_number, dev->serial_number,
487 dev->categ, dev->oui, dev->sub_categ);
488 if (len > 0 && len < (int) sizeof(txt))
489 wpa_printf(MSG_INFO, "%s", txt);
490}
491
492
116654ce
JM		 493int wpas_wps_init(struct wpa_supplicant *wpa_s)
494{
495 struct wps_context *wps;
c5adf528 496 struct wps_registrar_config rcfg;
116654ce
JM		 497
498 wps = os_zalloc(sizeof(*wps));
499 if (wps == NULL)
500 return -1;
501
502 wps->cred_cb = wpa_supplicant_wps_cred;
4b68290e 503 wps->event_cb = wpa_supplicant_wps_event;
116654ce
JM		 504 wps->cb_ctx = wpa_s;
505
3c0b7aa4
JM		 506 wps->dev.device_name = wpa_s->conf->device_name;
507 wps->dev.manufacturer = wpa_s->conf->manufacturer;
508 wps->dev.model_name = wpa_s->conf->model_name;
509 wps->dev.model_number = wpa_s->conf->model_number;
510 wps->dev.serial_number = wpa_s->conf->serial_number;
511 if (wpa_s->conf->device_type) {
512 char *pos;
513 u8 oui[4];
514 /* <categ>-<OUI>-<subcateg> */
515 wps->dev.categ = atoi(wpa_s->conf->device_type);
516 pos = os_strchr(wpa_s->conf->device_type, '-');
517 if (pos == NULL) {
518 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
519 os_free(wps);
520 return -1;
521 }
522 pos++;
523 if (hexstr2bin(pos, oui, 4)) {
524 wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
525 os_free(wps);
526 return -1;
527 }
528 wps->dev.oui = WPA_GET_BE32(oui);
529 pos = os_strchr(pos, '-');
530 if (pos == NULL) {
531 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
532 os_free(wps);
533 return -1;
534 }
535 pos++;
536 wps->dev.sub_categ = atoi(pos);
537 }
538 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
539 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
398cfbf6 540 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
79da74a2
JM		 541 if (is_nil_uuid(wpa_s->conf->uuid)) {
542 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
543 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
544 wps->uuid, WPS_UUID_LEN);
545 } else
546 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
116654ce 547
c5adf528
JM		 548 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
549 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
550
551 os_memset(&rcfg, 0, sizeof(rcfg));
552 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
553 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
554 rcfg.cb_ctx = wpa_s;
555
556 wps->registrar = wps_registrar_init(wps, &rcfg);
557 if (wps->registrar == NULL) {
558 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
559 os_free(wps);
560 return -1;
561 }
562
116654ce
JM		 563 wpa_s->wps = wps;
564
565 return 0;
566}
567
568
569void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
570{
fcc60db4
JM		 571 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
572
116654ce
JM		 573 if (wpa_s->wps == NULL)
574 return;
575
c5adf528 576 wps_registrar_deinit(wpa_s->wps->registrar);
116654ce
JM		 577 os_free(wpa_s->wps->network_key);
578 os_free(wpa_s->wps);
579 wpa_s->wps = NULL;
580}
351f09a2
JM		 581
582
a6099152
JM		 583int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
584 struct wpa_ssid *ssid, struct wpa_scan_res *bss)
351f09a2
JM		 585{
586 struct wpabuf *wps_ie;
587
588 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
589 return -1;
590
591 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
592 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
593 if (!wps_ie) {
594 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
595 return 0;
596 }
597
598 if (!wps_is_selected_pbc_registrar(wps_ie)) {
599 wpa_printf(MSG_DEBUG, " skip - WPS AP "
600 "without active PBC Registrar");
601 wpabuf_free(wps_ie);
602 return 0;
603 }
604
605 /* TODO: overlap detection */
606 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
607 "(Active PBC)");
608 wpabuf_free(wps_ie);
609 return 1;
610 }
611
612 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
613 if (!wps_ie) {
614 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
615 return 0;
616 }
617
a6099152
JM		 618 /*
619 * Start with WPS APs that advertise active PIN Registrar and
620 * allow any WPS AP after third scan since some APs do not set
621 * Selected Registrar attribute properly when using external
622 * Registrar.
623 */
351f09a2 624 if (!wps_is_selected_pin_registrar(wps_ie)) {
a6099152
JM		 625 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
626 wpa_printf(MSG_DEBUG, " skip - WPS AP "
627 "without active PIN Registrar");
628 wpabuf_free(wps_ie);
629 return 0;
630 }
631 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
632 } else {
633 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
634 "(Active PIN)");
351f09a2 635 }
351f09a2
JM		 636 wpabuf_free(wps_ie);
637 return 1;
638 }
639
640 if (wps_ie) {
641 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
642 wpabuf_free(wps_ie);
643 return 1;
644 }
645
646 return -1;
647}
648
649
a6099152
JM		 650int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
651 struct wpa_ssid *ssid,
351f09a2
JM		 652 struct wpa_scan_res *bss)
653{
654 struct wpabuf *wps_ie = NULL;
655 int ret = 0;
656
657 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
658 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
659 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
660 /* allow wildcard SSID for WPS PBC */
661 ret = 1;
662 }
663 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
664 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
a6099152
JM		 665 if (wps_ie &&
666 (wps_is_selected_pin_registrar(wps_ie) ||
667 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
351f09a2
JM		 668 /* allow wildcard SSID for WPS PIN */
669 ret = 1;
670 }
671 }
672
24c23d1b
JM		 673 if (!ret && ssid->bssid_set &&
674 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
675 /* allow wildcard SSID due to hardcoded BSSID match */
676 ret = 1;
677 }
678
351f09a2
JM		 679 wpabuf_free(wps_ie);
680
681 return ret;
682}
683
684
685int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
686 struct wpa_scan_res *selected,
687 struct wpa_ssid *ssid)
688{
689 const u8 *sel_uuid, *uuid;
690 size_t i;
691 struct wpabuf *wps_ie;
692 int ret = 0;
693
694 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
695 return 0;
696
697 /* Make sure that only one AP is in active PBC mode */
698 wps_ie = wpa_scan_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
699 if (wps_ie)
700 sel_uuid = wps_get_uuid_e(wps_ie);
701 else
702 sel_uuid = NULL;
351f09a2
JM		 703
704 for (i = 0; i < wpa_s->scan_res->num; i++) {
705 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
706 struct wpabuf *ie;
707 if (bss == selected)
708 continue;
709 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
710 if (!ie)
711 continue;
712 if (!wps_is_selected_pbc_registrar(ie)) {
713 wpabuf_free(ie);
714 continue;
715 }
716 uuid = wps_get_uuid_e(ie);
44cd430f
JM		 717 if (sel_uuid == NULL || uuid == NULL ||
718 os_memcmp(sel_uuid, uuid, 16) != 0) {
351f09a2
JM		 719 ret = 1; /* PBC overlap */
720 wpabuf_free(ie);
721 break;
722 }
723
724 /* TODO: verify that this is reasonable dual-band situation */
484957ae
JM		 725
726 wpabuf_free(ie);
351f09a2
JM		 727 }
728
729 wpabuf_free(wps_ie);
730
731 return ret;
732}
a524f05e
JM		 733
734
735void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
736{
737 size_t i;
738
739 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
740 return;
741
742 for (i = 0; i < wpa_s->scan_res->num; i++) {
743 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
744 struct wpabuf *ie;
745 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
746 if (!ie)
747 continue;
748 if (wps_is_selected_pbc_registrar(ie))
749 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
750 else if (wps_is_selected_pin_registrar(ie))
751 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
752 else
753 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
754 wpabuf_free(ie);
755 break;
756 }
757}
24c23d1b
JM		 758
759
760int wpas_wps_searching(struct wpa_supplicant *wpa_s)
761{
762 struct wpa_ssid *ssid;
763
764 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
765 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
766 return 1;
767 }
768
769 return 0;
770}
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