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WPS: Share a single function for generating NFS password tokens
[thirdparty/hostap.git] / wpa_supplicant / wps_supplicant.c
1 /*
2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "eloop.h"
13 #include "uuid.h"
14 #include "crypto/random.h"
15 #include "crypto/dh_group5.h"
16 #include "common/ieee802_11_defs.h"
17 #include "common/ieee802_11_common.h"
18 #include "common/wpa_common.h"
19 #include "common/wpa_ctrl.h"
20 #include "eap_common/eap_wsc_common.h"
21 #include "eap_peer/eap.h"
22 #include "eapol_supp/eapol_supp_sm.h"
23 #include "rsn_supp/wpa.h"
24 #include "wps/wps_attr_parse.h"
25 #include "config.h"
26 #include "wpa_supplicant_i.h"
27 #include "driver_i.h"
28 #include "notify.h"
29 #include "blacklist.h"
30 #include "bss.h"
31 #include "scan.h"
32 #include "ap.h"
33 #include "p2p/p2p.h"
34 #include "p2p_supplicant.h"
35 #include "wps_supplicant.h"
36
37
38 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
39 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
40 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
41
42 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
43 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
44
45
46 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
47 {
48 if (!wpa_s->wps_success &&
49 wpa_s->current_ssid &&
50 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
51 const u8 *bssid = wpa_s->bssid;
52 if (is_zero_ether_addr(bssid))
53 bssid = wpa_s->pending_bssid;
54
55 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
56 " did not succeed - continue trying to find "
57 "suitable AP", MAC2STR(bssid));
58 wpa_blacklist_add(wpa_s, bssid);
59
60 wpa_supplicant_deauthenticate(wpa_s,
61 WLAN_REASON_DEAUTH_LEAVING);
62 wpa_s->reassociate = 1;
63 wpa_supplicant_req_scan(wpa_s,
64 wpa_s->blacklist_cleared ? 5 : 0, 0);
65 wpa_s->blacklist_cleared = 0;
66 return 1;
67 }
68
69 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
70 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
71 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
72
73 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
74 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
75 int disabled = wpa_s->current_ssid->disabled;
76 unsigned int freq = wpa_s->assoc_freq;
77 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
78 "try to associate with the received credential "
79 "(freq=%u)", freq);
80 wpa_supplicant_deauthenticate(wpa_s,
81 WLAN_REASON_DEAUTH_LEAVING);
82 if (disabled) {
83 wpa_printf(MSG_DEBUG, "WPS: Current network is "
84 "disabled - wait for user to enable");
85 return 1;
86 }
87 wpa_s->after_wps = 5;
88 wpa_s->wps_freq = freq;
89 wpa_s->normal_scans = 0;
90 wpa_s->reassociate = 1;
91 wpa_supplicant_req_scan(wpa_s, 0, 0);
92 return 1;
93 }
94
95 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
96 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
97 "for external credential processing");
98 wpas_clear_wps(wpa_s);
99 wpa_supplicant_deauthenticate(wpa_s,
100 WLAN_REASON_DEAUTH_LEAVING);
101 return 1;
102 }
103
104 return 0;
105 }
106
107
108 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
109 struct wpa_ssid *ssid,
110 const struct wps_credential *cred)
111 {
112 struct wpa_driver_capa capa;
113 struct wpa_bss *bss;
114 const u8 *ie;
115 struct wpa_ie_data adv;
116 int wpa2 = 0, ccmp = 0;
117
118 /*
119 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
120 * case they are configured for mixed mode operation (WPA+WPA2 and
121 * TKIP+CCMP). Try to use scan results to figure out whether the AP
122 * actually supports stronger security and select that if the client
123 * has support for it, too.
124 */
125
126 if (wpa_drv_get_capa(wpa_s, &capa))
127 return; /* Unknown what driver supports */
128
129 if (ssid->ssid == NULL)
130 return;
131 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
132 if (bss == NULL) {
133 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
134 "table - use credential as-is");
135 return;
136 }
137
138 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
139
140 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
141 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
142 wpa2 = 1;
143 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
144 ccmp = 1;
145 } else {
146 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
147 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
148 adv.pairwise_cipher & WPA_CIPHER_CCMP)
149 ccmp = 1;
150 }
151
152 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
153 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
154 /*
155 * TODO: This could be the initial AP configuration and the
156 * Beacon contents could change shortly. Should request a new
157 * scan and delay addition of the network until the updated
158 * scan results are available.
159 */
160 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
161 "support - use credential as-is");
162 return;
163 }
164
165 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
166 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
167 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
168 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
169 "based on scan results");
170 if (wpa_s->conf->ap_scan == 1)
171 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
172 else
173 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
174 }
175
176 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
177 (ssid->proto & WPA_PROTO_WPA) &&
178 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
179 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
180 "based on scan results");
181 if (wpa_s->conf->ap_scan == 1)
182 ssid->proto |= WPA_PROTO_RSN;
183 else
184 ssid->proto = WPA_PROTO_RSN;
185 }
186 }
187
188
189 static int wpa_supplicant_wps_cred(void *ctx,
190 const struct wps_credential *cred)
191 {
192 struct wpa_supplicant *wpa_s = ctx;
193 struct wpa_ssid *ssid = wpa_s->current_ssid;
194 u8 key_idx = 0;
195 u16 auth_type;
196 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
197 int registrar = 0;
198 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
199
200 if ((wpa_s->conf->wps_cred_processing == 1 ||
201 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
202 size_t blen = cred->cred_attr_len * 2 + 1;
203 char *buf = os_malloc(blen);
204 if (buf) {
205 wpa_snprintf_hex(buf, blen,
206 cred->cred_attr, cred->cred_attr_len);
207 wpa_msg(wpa_s, MSG_INFO, "%s%s",
208 WPS_EVENT_CRED_RECEIVED, buf);
209 os_free(buf);
210 }
211
212 wpas_notify_wps_credential(wpa_s, cred);
213 } else
214 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
215
216 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
217 cred->cred_attr, cred->cred_attr_len);
218
219 if (wpa_s->conf->wps_cred_processing == 1)
220 return 0;
221
222 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
223 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
224 cred->auth_type);
225 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
226 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
227 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
228 cred->key, cred->key_len);
229 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
230 MAC2STR(cred->mac_addr));
231
232 auth_type = cred->auth_type;
233 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
234 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
235 "auth_type into WPA2PSK");
236 auth_type = WPS_AUTH_WPA2PSK;
237 }
238
239 if (auth_type != WPS_AUTH_OPEN &&
240 auth_type != WPS_AUTH_SHARED &&
241 auth_type != WPS_AUTH_WPAPSK &&
242 auth_type != WPS_AUTH_WPA2PSK) {
243 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
244 "unsupported authentication type 0x%x",
245 auth_type);
246 return 0;
247 }
248
249 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
250 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
251 "on the received credential");
252 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
253 if (ssid->eap.identity &&
254 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
255 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
256 WSC_ID_REGISTRAR_LEN) == 0)
257 registrar = 1;
258 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
259 os_free(ssid->eap.identity);
260 ssid->eap.identity = NULL;
261 ssid->eap.identity_len = 0;
262 os_free(ssid->eap.phase1);
263 ssid->eap.phase1 = NULL;
264 os_free(ssid->eap.eap_methods);
265 ssid->eap.eap_methods = NULL;
266 if (!ssid->p2p_group)
267 ssid->temporary = 0;
268 ssid->bssid_set = 0;
269 } else {
270 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
271 "received credential");
272 ssid = wpa_config_add_network(wpa_s->conf);
273 if (ssid == NULL)
274 return -1;
275 wpas_notify_network_added(wpa_s, ssid);
276 }
277
278 wpa_config_set_network_defaults(ssid);
279
280 os_free(ssid->ssid);
281 ssid->ssid = os_malloc(cred->ssid_len);
282 if (ssid->ssid) {
283 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
284 ssid->ssid_len = cred->ssid_len;
285 }
286
287 switch (cred->encr_type) {
288 case WPS_ENCR_NONE:
289 break;
290 case WPS_ENCR_WEP:
291 if (cred->key_len <= 0)
292 break;
293 if (cred->key_len != 5 && cred->key_len != 13 &&
294 cred->key_len != 10 && cred->key_len != 26) {
295 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
296 "%lu", (unsigned long) cred->key_len);
297 return -1;
298 }
299 if (cred->key_idx > NUM_WEP_KEYS) {
300 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
301 cred->key_idx);
302 return -1;
303 }
304 if (cred->key_idx)
305 key_idx = cred->key_idx - 1;
306 if (cred->key_len == 10 || cred->key_len == 26) {
307 if (hexstr2bin((char *) cred->key,
308 ssid->wep_key[key_idx],
309 cred->key_len / 2) < 0) {
310 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
311 "%d", key_idx);
312 return -1;
313 }
314 ssid->wep_key_len[key_idx] = cred->key_len / 2;
315 } else {
316 os_memcpy(ssid->wep_key[key_idx], cred->key,
317 cred->key_len);
318 ssid->wep_key_len[key_idx] = cred->key_len;
319 }
320 ssid->wep_tx_keyidx = key_idx;
321 break;
322 case WPS_ENCR_TKIP:
323 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
324 break;
325 case WPS_ENCR_AES:
326 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
327 break;
328 }
329
330 switch (auth_type) {
331 case WPS_AUTH_OPEN:
332 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
333 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
334 ssid->proto = 0;
335 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
336 if (registrar) {
337 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
338 "id=%d - Credentials for an open "
339 "network disabled by default - use "
340 "'select_network %d' to enable",
341 ssid->id, ssid->id);
342 ssid->disabled = 1;
343 }
344 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
345 break;
346 case WPS_AUTH_SHARED:
347 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
348 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
349 ssid->proto = 0;
350 break;
351 case WPS_AUTH_WPAPSK:
352 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
353 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
354 ssid->proto = WPA_PROTO_WPA;
355 break;
356 case WPS_AUTH_WPA:
357 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
358 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
359 ssid->proto = WPA_PROTO_WPA;
360 break;
361 case WPS_AUTH_WPA2:
362 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
363 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
364 ssid->proto = WPA_PROTO_RSN;
365 break;
366 case WPS_AUTH_WPA2PSK:
367 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
368 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
369 ssid->proto = WPA_PROTO_RSN;
370 break;
371 }
372
373 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
374 if (cred->key_len == 2 * PMK_LEN) {
375 if (hexstr2bin((const char *) cred->key, ssid->psk,
376 PMK_LEN)) {
377 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
378 "Key");
379 return -1;
380 }
381 ssid->psk_set = 1;
382 ssid->export_keys = 1;
383 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
384 os_free(ssid->passphrase);
385 ssid->passphrase = os_malloc(cred->key_len + 1);
386 if (ssid->passphrase == NULL)
387 return -1;
388 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
389 ssid->passphrase[cred->key_len] = '\0';
390 wpa_config_update_psk(ssid);
391 ssid->export_keys = 1;
392 } else {
393 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
394 "length %lu",
395 (unsigned long) cred->key_len);
396 return -1;
397 }
398 }
399
400 wpas_wps_security_workaround(wpa_s, ssid, cred);
401
402 #ifndef CONFIG_NO_CONFIG_WRITE
403 if (wpa_s->conf->update_config &&
404 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
405 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
406 return -1;
407 }
408 #endif /* CONFIG_NO_CONFIG_WRITE */
409
410 return 0;
411 }
412
413
414 #ifdef CONFIG_P2P
415 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
416 {
417 struct wpa_supplicant *wpa_s = eloop_ctx;
418 wpas_p2p_notif_pbc_overlap(wpa_s);
419 }
420 #endif /* CONFIG_P2P */
421
422
423 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
424 struct wps_event_m2d *m2d)
425 {
426 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
427 "dev_password_id=%d config_error=%d",
428 m2d->dev_password_id, m2d->config_error);
429 wpas_notify_wps_event_m2d(wpa_s, m2d);
430 #ifdef CONFIG_P2P
431 if (wpa_s->parent && wpa_s->parent != wpa_s) {
432 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
433 "dev_password_id=%d config_error=%d",
434 m2d->dev_password_id, m2d->config_error);
435 }
436 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
437 /*
438 * Notify P2P from eloop timeout to avoid issues with the
439 * interface getting removed while processing a message.
440 */
441 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
442 NULL);
443 }
444 #endif /* CONFIG_P2P */
445 }
446
447
448 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
449 "No Error", /* WPS_EI_NO_ERROR */
450 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
451 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
452 };
453
454 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
455 struct wps_event_fail *fail)
456 {
457 if (fail->error_indication > 0 &&
458 fail->error_indication < NUM_WPS_EI_VALUES) {
459 wpa_msg(wpa_s, MSG_INFO,
460 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
461 fail->msg, fail->config_error, fail->error_indication,
462 wps_event_fail_reason[fail->error_indication]);
463 if (wpa_s->parent && wpa_s->parent != wpa_s)
464 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
465 "msg=%d config_error=%d reason=%d (%s)",
466 fail->msg, fail->config_error,
467 fail->error_indication,
468 wps_event_fail_reason[fail->error_indication]);
469 } else {
470 wpa_msg(wpa_s, MSG_INFO,
471 WPS_EVENT_FAIL "msg=%d config_error=%d",
472 fail->msg, fail->config_error);
473 if (wpa_s->parent && wpa_s->parent != wpa_s)
474 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
475 "msg=%d config_error=%d",
476 fail->msg, fail->config_error);
477 }
478 wpas_clear_wps(wpa_s);
479 wpas_notify_wps_event_fail(wpa_s, fail);
480 #ifdef CONFIG_P2P
481 wpas_p2p_wps_failed(wpa_s, fail);
482 #endif /* CONFIG_P2P */
483 }
484
485
486 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
487 {
488 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
489 wpa_s->wps_success = 1;
490 wpas_notify_wps_event_success(wpa_s);
491 #ifdef CONFIG_P2P
492 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
493 #endif /* CONFIG_P2P */
494 }
495
496
497 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
498 struct wps_event_er_ap *ap)
499 {
500 char uuid_str[100];
501 char dev_type[WPS_DEV_TYPE_BUFSIZE];
502
503 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
504 if (ap->pri_dev_type)
505 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
506 sizeof(dev_type));
507 else
508 dev_type[0] = '\0';
509
510 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
511 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
512 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
513 ap->friendly_name ? ap->friendly_name : "",
514 ap->manufacturer ? ap->manufacturer : "",
515 ap->model_description ? ap->model_description : "",
516 ap->model_name ? ap->model_name : "",
517 ap->manufacturer_url ? ap->manufacturer_url : "",
518 ap->model_url ? ap->model_url : "");
519 }
520
521
522 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
523 struct wps_event_er_ap *ap)
524 {
525 char uuid_str[100];
526 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
527 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
528 }
529
530
531 static void wpa_supplicant_wps_event_er_enrollee_add(
532 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
533 {
534 char uuid_str[100];
535 char dev_type[WPS_DEV_TYPE_BUFSIZE];
536
537 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
538 if (enrollee->pri_dev_type)
539 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
540 sizeof(dev_type));
541 else
542 dev_type[0] = '\0';
543
544 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
545 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
546 "|%s|%s|%s|%s|%s|",
547 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
548 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
549 enrollee->dev_name ? enrollee->dev_name : "",
550 enrollee->manufacturer ? enrollee->manufacturer : "",
551 enrollee->model_name ? enrollee->model_name : "",
552 enrollee->model_number ? enrollee->model_number : "",
553 enrollee->serial_number ? enrollee->serial_number : "");
554 }
555
556
557 static void wpa_supplicant_wps_event_er_enrollee_remove(
558 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
559 {
560 char uuid_str[100];
561 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
562 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
563 uuid_str, MAC2STR(enrollee->mac_addr));
564 }
565
566
567 static void wpa_supplicant_wps_event_er_ap_settings(
568 struct wpa_supplicant *wpa_s,
569 struct wps_event_er_ap_settings *ap_settings)
570 {
571 char uuid_str[100];
572 char key_str[65];
573 const struct wps_credential *cred = ap_settings->cred;
574
575 key_str[0] = '\0';
576 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
577 if (cred->key_len >= 8 && cred->key_len <= 64) {
578 os_memcpy(key_str, cred->key, cred->key_len);
579 key_str[cred->key_len] = '\0';
580 }
581 }
582
583 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
584 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
585 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
586 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
587 "key=%s",
588 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
589 cred->auth_type, cred->encr_type, key_str);
590 }
591
592
593 static void wpa_supplicant_wps_event_er_set_sel_reg(
594 struct wpa_supplicant *wpa_s,
595 struct wps_event_er_set_selected_registrar *ev)
596 {
597 char uuid_str[100];
598
599 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
600 switch (ev->state) {
601 case WPS_ER_SET_SEL_REG_START:
602 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
603 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
604 "sel_reg_config_methods=0x%x",
605 uuid_str, ev->sel_reg, ev->dev_passwd_id,
606 ev->sel_reg_config_methods);
607 break;
608 case WPS_ER_SET_SEL_REG_DONE:
609 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
610 "uuid=%s state=DONE", uuid_str);
611 break;
612 case WPS_ER_SET_SEL_REG_FAILED:
613 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
614 "uuid=%s state=FAILED", uuid_str);
615 break;
616 }
617 }
618
619
620 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
621 union wps_event_data *data)
622 {
623 struct wpa_supplicant *wpa_s = ctx;
624 switch (event) {
625 case WPS_EV_M2D:
626 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
627 break;
628 case WPS_EV_FAIL:
629 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
630 break;
631 case WPS_EV_SUCCESS:
632 wpa_supplicant_wps_event_success(wpa_s);
633 break;
634 case WPS_EV_PWD_AUTH_FAIL:
635 #ifdef CONFIG_AP
636 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
637 wpa_supplicant_ap_pwd_auth_fail(wpa_s);
638 #endif /* CONFIG_AP */
639 break;
640 case WPS_EV_PBC_OVERLAP:
641 break;
642 case WPS_EV_PBC_TIMEOUT:
643 break;
644 case WPS_EV_ER_AP_ADD:
645 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
646 break;
647 case WPS_EV_ER_AP_REMOVE:
648 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
649 break;
650 case WPS_EV_ER_ENROLLEE_ADD:
651 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
652 &data->enrollee);
653 break;
654 case WPS_EV_ER_ENROLLEE_REMOVE:
655 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
656 &data->enrollee);
657 break;
658 case WPS_EV_ER_AP_SETTINGS:
659 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
660 &data->ap_settings);
661 break;
662 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
663 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
664 &data->set_sel_reg);
665 break;
666 case WPS_EV_AP_PIN_SUCCESS:
667 break;
668 }
669 }
670
671
672 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
673 {
674 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
675 eap_is_wps_pin_enrollee(&ssid->eap))
676 return WPS_REQ_ENROLLEE;
677 else
678 return WPS_REQ_REGISTRAR;
679 }
680
681
682 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
683 {
684 int id;
685 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
686
687 prev_current = wpa_s->current_ssid;
688
689 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
690
691 /* Remove any existing WPS network from configuration */
692 ssid = wpa_s->conf->ssid;
693 while (ssid) {
694 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
695 if (ssid == wpa_s->current_ssid) {
696 wpa_s->current_ssid = NULL;
697 if (ssid != NULL)
698 wpas_notify_network_changed(wpa_s);
699 }
700 id = ssid->id;
701 remove_ssid = ssid;
702 } else
703 id = -1;
704 ssid = ssid->next;
705 if (id >= 0) {
706 if (prev_current == remove_ssid) {
707 wpa_sm_set_config(wpa_s->wpa, NULL);
708 eapol_sm_notify_config(wpa_s->eapol, NULL,
709 NULL);
710 }
711 wpas_notify_network_removed(wpa_s, remove_ssid);
712 wpa_config_remove_network(wpa_s->conf, id);
713 }
714 }
715 }
716
717
718 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
719 {
720 struct wpa_supplicant *wpa_s = eloop_ctx;
721 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
722 "out");
723 wpas_clear_wps(wpa_s);
724 }
725
726
727 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
728 int registrar, const u8 *bssid)
729 {
730 struct wpa_ssid *ssid;
731
732 ssid = wpa_config_add_network(wpa_s->conf);
733 if (ssid == NULL)
734 return NULL;
735 wpas_notify_network_added(wpa_s, ssid);
736 wpa_config_set_network_defaults(ssid);
737 ssid->temporary = 1;
738 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
739 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
740 wpa_config_set(ssid, "identity", registrar ?
741 "\"" WSC_ID_REGISTRAR "\"" :
742 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
743 wpas_notify_network_removed(wpa_s, ssid);
744 wpa_config_remove_network(wpa_s->conf, ssid->id);
745 return NULL;
746 }
747
748 if (bssid) {
749 #ifndef CONFIG_P2P
750 struct wpa_bss *bss;
751 int count = 0;
752 #endif /* CONFIG_P2P */
753
754 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
755 ssid->bssid_set = 1;
756
757 /*
758 * Note: With P2P, the SSID may change at the time the WPS
759 * provisioning is started, so better not filter the AP based
760 * on the current SSID in the scan results.
761 */
762 #ifndef CONFIG_P2P
763 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
764 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
765 continue;
766
767 os_free(ssid->ssid);
768 ssid->ssid = os_malloc(bss->ssid_len);
769 if (ssid->ssid == NULL)
770 break;
771 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
772 ssid->ssid_len = bss->ssid_len;
773 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
774 "scan results",
775 ssid->ssid, ssid->ssid_len);
776 count++;
777 }
778
779 if (count > 1) {
780 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
781 "for the AP; use wildcard");
782 os_free(ssid->ssid);
783 ssid->ssid = NULL;
784 ssid->ssid_len = 0;
785 }
786 #endif /* CONFIG_P2P */
787 }
788
789 return ssid;
790 }
791
792
793 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
794 struct wpa_ssid *selected, const u8 *bssid)
795 {
796 struct wpa_ssid *ssid;
797 struct wpa_bss *bss;
798
799 wpa_s->known_wps_freq = 0;
800 if (bssid) {
801 bss = wpa_bss_get_bssid(wpa_s, bssid);
802 if (bss && bss->freq > 0) {
803 wpa_s->known_wps_freq = 1;
804 wpa_s->wps_freq = bss->freq;
805 }
806 }
807
808 if (wpa_s->current_ssid)
809 wpa_supplicant_deauthenticate(
810 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
811
812 /* Mark all other networks disabled and trigger reassociation */
813 ssid = wpa_s->conf->ssid;
814 while (ssid) {
815 int was_disabled = ssid->disabled;
816 /*
817 * In case the network object corresponds to a persistent group
818 * then do not send out network disabled signal. In addition,
819 * do not change disabled status of persistent network objects
820 * from 2 to 1 should we connect to another network.
821 */
822 if (was_disabled != 2) {
823 ssid->disabled = ssid != selected;
824 if (was_disabled != ssid->disabled)
825 wpas_notify_network_enabled_changed(wpa_s,
826 ssid);
827 }
828 ssid = ssid->next;
829 }
830 wpa_s->disconnected = 0;
831 wpa_s->reassociate = 1;
832 wpa_s->scan_runs = 0;
833 wpa_s->normal_scans = 0;
834 wpa_s->wps_success = 0;
835 wpa_s->blacklist_cleared = 0;
836 wpa_supplicant_req_scan(wpa_s, 0, 0);
837 }
838
839
840 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
841 int p2p_group)
842 {
843 struct wpa_ssid *ssid;
844 wpas_clear_wps(wpa_s);
845 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
846 if (ssid == NULL)
847 return -1;
848 ssid->temporary = 1;
849 ssid->p2p_group = p2p_group;
850 #ifdef CONFIG_P2P
851 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
852 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
853 if (ssid->ssid) {
854 ssid->ssid_len = wpa_s->go_params->ssid_len;
855 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
856 ssid->ssid_len);
857 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
858 "SSID", ssid->ssid, ssid->ssid_len);
859 }
860 }
861 #endif /* CONFIG_P2P */
862 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
863 if (wpa_s->wps_fragment_size)
864 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
865 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
866 wpa_s, NULL);
867 wpas_wps_reassoc(wpa_s, ssid, bssid);
868 return 0;
869 }
870
871
872 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
873 const char *pin, int p2p_group, u16 dev_pw_id)
874 {
875 struct wpa_ssid *ssid;
876 char val[128];
877 unsigned int rpin = 0;
878
879 wpas_clear_wps(wpa_s);
880 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
881 if (ssid == NULL)
882 return -1;
883 ssid->temporary = 1;
884 ssid->p2p_group = p2p_group;
885 #ifdef CONFIG_P2P
886 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
887 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
888 if (ssid->ssid) {
889 ssid->ssid_len = wpa_s->go_params->ssid_len;
890 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
891 ssid->ssid_len);
892 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
893 "SSID", ssid->ssid, ssid->ssid_len);
894 }
895 }
896 #endif /* CONFIG_P2P */
897 if (pin)
898 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
899 pin, dev_pw_id);
900 else {
901 rpin = wps_generate_pin();
902 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
903 rpin, dev_pw_id);
904 }
905 wpa_config_set(ssid, "phase1", val, 0);
906 if (wpa_s->wps_fragment_size)
907 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
908 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
909 wpa_s, NULL);
910 wpas_wps_reassoc(wpa_s, ssid, bssid);
911 return rpin;
912 }
913
914
915 /* Cancel the wps pbc/pin requests */
916 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
917 {
918 #ifdef CONFIG_AP
919 if (wpa_s->ap_iface) {
920 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
921 return wpa_supplicant_ap_wps_cancel(wpa_s);
922 }
923 #endif /* CONFIG_AP */
924
925 if (wpa_s->wpa_state == WPA_SCANNING ||
926 wpa_s->wpa_state == WPA_DISCONNECTED) {
927 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
928 wpa_supplicant_cancel_scan(wpa_s);
929 wpas_clear_wps(wpa_s);
930 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
931 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
932 "deauthenticate");
933 wpa_supplicant_deauthenticate(wpa_s,
934 WLAN_REASON_DEAUTH_LEAVING);
935 wpas_clear_wps(wpa_s);
936 }
937
938 return 0;
939 }
940
941
942 #ifdef CONFIG_WPS_OOB
943 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
944 char *path, char *method, char *name)
945 {
946 struct wps_context *wps = wpa_s->wps;
947 struct oob_device_data *oob_dev;
948
949 oob_dev = wps_get_oob_device(device_type);
950 if (oob_dev == NULL)
951 return -1;
952 oob_dev->device_path = path;
953 oob_dev->device_name = name;
954 wps->oob_conf.oob_method = wps_get_oob_method(method);
955
956 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
957 /*
958 * Use pre-configured DH keys in order to be able to write the
959 * key hash into the OOB file.
960 */
961 wpabuf_free(wps->dh_pubkey);
962 wpabuf_free(wps->dh_privkey);
963 wps->dh_privkey = NULL;
964 wps->dh_pubkey = NULL;
965 dh5_free(wps->dh_ctx);
966 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
967 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
968 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
969 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
970 "Diffie-Hellman handshake");
971 return -1;
972 }
973 }
974
975 if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
976 wpas_clear_wps(wpa_s);
977
978 if (wps_process_oob(wps, oob_dev, 0) < 0)
979 return -1;
980
981 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
982 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
983 wpas_wps_start_pin(wpa_s, NULL,
984 wpabuf_head(wps->oob_conf.dev_password), 0,
985 DEV_PW_DEFAULT) < 0)
986 return -1;
987
988 return 0;
989 }
990 #endif /* CONFIG_WPS_OOB */
991
992
993 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
994 const char *pin, struct wps_new_ap_settings *settings)
995 {
996 struct wpa_ssid *ssid;
997 char val[200];
998 char *pos, *end;
999 int res;
1000
1001 if (!pin)
1002 return -1;
1003 wpas_clear_wps(wpa_s);
1004 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1005 if (ssid == NULL)
1006 return -1;
1007 ssid->temporary = 1;
1008 pos = val;
1009 end = pos + sizeof(val);
1010 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1011 if (res < 0 || res >= end - pos)
1012 return -1;
1013 pos += res;
1014 if (settings) {
1015 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1016 "new_encr=%s new_key=%s",
1017 settings->ssid_hex, settings->auth,
1018 settings->encr, settings->key_hex);
1019 if (res < 0 || res >= end - pos)
1020 return -1;
1021 pos += res;
1022 }
1023 res = os_snprintf(pos, end - pos, "\"");
1024 if (res < 0 || res >= end - pos)
1025 return -1;
1026 wpa_config_set(ssid, "phase1", val, 0);
1027 if (wpa_s->wps_fragment_size)
1028 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1029 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1030 wpa_s, NULL);
1031 wpas_wps_reassoc(wpa_s, ssid, bssid);
1032 return 0;
1033 }
1034
1035
1036 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1037 size_t psk_len)
1038 {
1039 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1040 "STA " MACSTR, MAC2STR(mac_addr));
1041 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1042
1043 /* TODO */
1044
1045 return 0;
1046 }
1047
1048
1049 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1050 const struct wps_device_data *dev)
1051 {
1052 char uuid[40], txt[400];
1053 int len;
1054 char devtype[WPS_DEV_TYPE_BUFSIZE];
1055 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1056 return;
1057 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1058 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1059 " [%s|%s|%s|%s|%s|%s]",
1060 uuid, MAC2STR(dev->mac_addr), dev->device_name,
1061 dev->manufacturer, dev->model_name,
1062 dev->model_number, dev->serial_number,
1063 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1064 sizeof(devtype)));
1065 if (len > 0 && len < (int) sizeof(txt))
1066 wpa_printf(MSG_INFO, "%s", txt);
1067 }
1068
1069
1070 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1071 u16 sel_reg_config_methods)
1072 {
1073 #ifdef CONFIG_WPS_ER
1074 struct wpa_supplicant *wpa_s = ctx;
1075
1076 if (wpa_s->wps_er == NULL)
1077 return;
1078 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1079 "dev_password_id=%u sel_reg_config_methods=0x%x",
1080 sel_reg, dev_passwd_id, sel_reg_config_methods);
1081 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1082 sel_reg_config_methods);
1083 #endif /* CONFIG_WPS_ER */
1084 }
1085
1086
1087 static u16 wps_fix_config_methods(u16 config_methods)
1088 {
1089 #ifdef CONFIG_WPS2
1090 if ((config_methods &
1091 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1092 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1093 wpa_printf(MSG_INFO, "WPS: Converting display to "
1094 "virtual_display for WPS 2.0 compliance");
1095 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1096 }
1097 if ((config_methods &
1098 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1099 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1100 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1101 "virtual_push_button for WPS 2.0 compliance");
1102 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1103 }
1104 #endif /* CONFIG_WPS2 */
1105
1106 return config_methods;
1107 }
1108
1109
1110 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1111 struct wps_context *wps)
1112 {
1113 wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1114 if (is_nil_uuid(wpa_s->conf->uuid)) {
1115 struct wpa_supplicant *first;
1116 first = wpa_s->global->ifaces;
1117 while (first && first->next)
1118 first = first->next;
1119 if (first && first != wpa_s) {
1120 if (wps != wpa_s->global->ifaces->wps)
1121 os_memcpy(wps->uuid,
1122 wpa_s->global->ifaces->wps->uuid,
1123 WPS_UUID_LEN);
1124 wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1125 "interface", wps->uuid, WPS_UUID_LEN);
1126 } else {
1127 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1128 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1129 "address", wps->uuid, WPS_UUID_LEN);
1130 }
1131 } else {
1132 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1133 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1134 wps->uuid, WPS_UUID_LEN);
1135 }
1136 }
1137
1138
1139 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1140 struct wps_context *wps)
1141 {
1142 wpabuf_free(wps->dev.vendor_ext_m1);
1143 wps->dev.vendor_ext_m1 = NULL;
1144
1145 if (wpa_s->conf->wps_vendor_ext_m1) {
1146 wps->dev.vendor_ext_m1 =
1147 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1148 if (!wps->dev.vendor_ext_m1) {
1149 wpa_printf(MSG_ERROR, "WPS: Cannot "
1150 "allocate memory for vendor_ext_m1");
1151 }
1152 }
1153 }
1154
1155
1156 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1157 {
1158 struct wps_context *wps;
1159 struct wps_registrar_config rcfg;
1160 struct hostapd_hw_modes *modes;
1161 u16 m;
1162
1163 wps = os_zalloc(sizeof(*wps));
1164 if (wps == NULL)
1165 return -1;
1166
1167 wps->cred_cb = wpa_supplicant_wps_cred;
1168 wps->event_cb = wpa_supplicant_wps_event;
1169 wps->cb_ctx = wpa_s;
1170
1171 wps->dev.device_name = wpa_s->conf->device_name;
1172 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1173 wps->dev.model_name = wpa_s->conf->model_name;
1174 wps->dev.model_number = wpa_s->conf->model_number;
1175 wps->dev.serial_number = wpa_s->conf->serial_number;
1176 wps->config_methods =
1177 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1178 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1179 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1180 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1181 "methods are not allowed at the same time");
1182 os_free(wps);
1183 return -1;
1184 }
1185 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1186 wps->dev.config_methods = wps->config_methods;
1187 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1188 WPS_DEV_TYPE_LEN);
1189
1190 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1191 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1192 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1193
1194 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1195
1196 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1197 modes = wpa_s->hw.modes;
1198 if (modes) {
1199 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1200 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1201 modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1202 wps->dev.rf_bands |= WPS_RF_24GHZ;
1203 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1204 wps->dev.rf_bands |= WPS_RF_50GHZ;
1205 }
1206 }
1207 if (wps->dev.rf_bands == 0) {
1208 /*
1209 * Default to claiming support for both bands if the driver
1210 * does not provide support for fetching supported bands.
1211 */
1212 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1213 }
1214 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1215 wpas_wps_set_uuid(wpa_s, wps);
1216
1217 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1218 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1219
1220 os_memset(&rcfg, 0, sizeof(rcfg));
1221 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1222 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1223 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1224 rcfg.cb_ctx = wpa_s;
1225
1226 wps->registrar = wps_registrar_init(wps, &rcfg);
1227 if (wps->registrar == NULL) {
1228 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1229 os_free(wps);
1230 return -1;
1231 }
1232
1233 wpa_s->wps = wps;
1234
1235 return 0;
1236 }
1237
1238
1239 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1240 {
1241 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1242
1243 if (wpa_s->wps == NULL)
1244 return;
1245
1246 #ifdef CONFIG_WPS_ER
1247 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1248 wpa_s->wps_er = NULL;
1249 #endif /* CONFIG_WPS_ER */
1250
1251 wps_registrar_deinit(wpa_s->wps->registrar);
1252 wpabuf_free(wpa_s->wps->dh_pubkey);
1253 wpabuf_free(wpa_s->wps->dh_privkey);
1254 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1255 wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1256 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1257 os_free(wpa_s->wps->network_key);
1258 os_free(wpa_s->wps);
1259 wpa_s->wps = NULL;
1260 }
1261
1262
1263 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1264 struct wpa_ssid *ssid, struct wpa_scan_res *bss)
1265 {
1266 struct wpabuf *wps_ie;
1267
1268 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1269 return -1;
1270
1271 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1272 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1273 if (!wps_ie) {
1274 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1275 return 0;
1276 }
1277
1278 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1279 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1280 "without active PBC Registrar");
1281 wpabuf_free(wps_ie);
1282 return 0;
1283 }
1284
1285 /* TODO: overlap detection */
1286 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1287 "(Active PBC)");
1288 wpabuf_free(wps_ie);
1289 return 1;
1290 }
1291
1292 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1293 if (!wps_ie) {
1294 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1295 return 0;
1296 }
1297
1298 /*
1299 * Start with WPS APs that advertise our address as an
1300 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1301 * allow any WPS AP after couple of scans since some APs do not
1302 * set Selected Registrar attribute properly when using
1303 * external Registrar.
1304 */
1305 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1306 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1307 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1308 "without active PIN Registrar");
1309 wpabuf_free(wps_ie);
1310 return 0;
1311 }
1312 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1313 } else {
1314 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1315 "(Authorized MAC or Active PIN)");
1316 }
1317 wpabuf_free(wps_ie);
1318 return 1;
1319 }
1320
1321 if (wps_ie) {
1322 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1323 wpabuf_free(wps_ie);
1324 return 1;
1325 }
1326
1327 return -1;
1328 }
1329
1330
1331 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1332 struct wpa_ssid *ssid,
1333 struct wpa_scan_res *bss)
1334 {
1335 struct wpabuf *wps_ie = NULL;
1336 int ret = 0;
1337
1338 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1339 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1340 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1341 /* allow wildcard SSID for WPS PBC */
1342 ret = 1;
1343 }
1344 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1345 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1346 if (wps_ie &&
1347 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1348 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1349 /* allow wildcard SSID for WPS PIN */
1350 ret = 1;
1351 }
1352 }
1353
1354 if (!ret && ssid->bssid_set &&
1355 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1356 /* allow wildcard SSID due to hardcoded BSSID match */
1357 ret = 1;
1358 }
1359
1360 #ifdef CONFIG_WPS_STRICT
1361 if (wps_ie) {
1362 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1363 0, bss->bssid) < 0)
1364 ret = 0;
1365 if (bss->beacon_ie_len) {
1366 struct wpabuf *bcn_wps;
1367 bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1368 bss, WPS_IE_VENDOR_TYPE);
1369 if (bcn_wps == NULL) {
1370 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1371 "missing from AP Beacon");
1372 ret = 0;
1373 } else {
1374 if (wps_validate_beacon(wps_ie) < 0)
1375 ret = 0;
1376 wpabuf_free(bcn_wps);
1377 }
1378 }
1379 }
1380 #endif /* CONFIG_WPS_STRICT */
1381
1382 wpabuf_free(wps_ie);
1383
1384 return ret;
1385 }
1386
1387
1388 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1389 struct wpa_bss *selected, struct wpa_ssid *ssid)
1390 {
1391 const u8 *sel_uuid, *uuid;
1392 struct wpabuf *wps_ie;
1393 int ret = 0;
1394 struct wpa_bss *bss;
1395
1396 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1397 return 0;
1398
1399 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1400 "present in scan results; selected BSSID " MACSTR,
1401 MAC2STR(selected->bssid));
1402
1403 /* Make sure that only one AP is in active PBC mode */
1404 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1405 if (wps_ie) {
1406 sel_uuid = wps_get_uuid_e(wps_ie);
1407 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1408 sel_uuid, UUID_LEN);
1409 } else {
1410 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1411 "WPS IE?!");
1412 sel_uuid = NULL;
1413 }
1414
1415 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1416 struct wpabuf *ie;
1417 if (bss == selected)
1418 continue;
1419 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1420 if (!ie)
1421 continue;
1422 if (!wps_is_selected_pbc_registrar(ie)) {
1423 wpabuf_free(ie);
1424 continue;
1425 }
1426 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1427 MACSTR, MAC2STR(bss->bssid));
1428 uuid = wps_get_uuid_e(ie);
1429 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1430 uuid, UUID_LEN);
1431 if (sel_uuid == NULL || uuid == NULL ||
1432 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1433 ret = 1; /* PBC overlap */
1434 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1435 MACSTR " and " MACSTR,
1436 MAC2STR(selected->bssid),
1437 MAC2STR(bss->bssid));
1438 wpabuf_free(ie);
1439 break;
1440 }
1441
1442 /* TODO: verify that this is reasonable dual-band situation */
1443
1444 wpabuf_free(ie);
1445 }
1446
1447 wpabuf_free(wps_ie);
1448
1449 return ret;
1450 }
1451
1452
1453 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1454 {
1455 struct wpa_bss *bss;
1456 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1457
1458 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1459 return;
1460
1461 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1462 struct wpabuf *ie;
1463 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1464 if (!ie)
1465 continue;
1466 if (wps_is_selected_pbc_registrar(ie))
1467 pbc++;
1468 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1469 auth++;
1470 else if (wps_is_selected_pin_registrar(ie))
1471 pin++;
1472 else
1473 wps++;
1474 wpabuf_free(ie);
1475 }
1476
1477 if (pbc)
1478 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1479 else if (auth)
1480 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1481 else if (pin)
1482 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1483 else if (wps)
1484 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1485 }
1486
1487
1488 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1489 {
1490 struct wpa_ssid *ssid;
1491
1492 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1493 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1494 return 1;
1495 }
1496
1497 return 0;
1498 }
1499
1500
1501 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1502 char *end)
1503 {
1504 struct wpabuf *wps_ie;
1505 int ret;
1506
1507 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1508 if (wps_ie == NULL)
1509 return 0;
1510
1511 ret = wps_attr_text(wps_ie, buf, end);
1512 wpabuf_free(wps_ie);
1513 return ret;
1514 }
1515
1516
1517 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1518 {
1519 #ifdef CONFIG_WPS_ER
1520 if (wpa_s->wps_er) {
1521 wps_er_refresh(wpa_s->wps_er);
1522 return 0;
1523 }
1524 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1525 if (wpa_s->wps_er == NULL)
1526 return -1;
1527 return 0;
1528 #else /* CONFIG_WPS_ER */
1529 return 0;
1530 #endif /* CONFIG_WPS_ER */
1531 }
1532
1533
1534 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1535 {
1536 #ifdef CONFIG_WPS_ER
1537 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1538 wpa_s->wps_er = NULL;
1539 #endif /* CONFIG_WPS_ER */
1540 return 0;
1541 }
1542
1543
1544 #ifdef CONFIG_WPS_ER
1545 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1546 const char *uuid, const char *pin)
1547 {
1548 u8 u[UUID_LEN];
1549 int any = 0;
1550
1551 if (os_strcmp(uuid, "any") == 0)
1552 any = 1;
1553 else if (uuid_str2bin(uuid, u))
1554 return -1;
1555 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1556 any ? NULL : u,
1557 (const u8 *) pin, os_strlen(pin), 300);
1558 }
1559
1560
1561 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1562 {
1563 u8 u[UUID_LEN];
1564
1565 if (uuid_str2bin(uuid, u))
1566 return -1;
1567 return wps_er_pbc(wpa_s->wps_er, u);
1568 }
1569
1570
1571 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1572 const char *pin)
1573 {
1574 u8 u[UUID_LEN];
1575
1576 if (uuid_str2bin(uuid, u))
1577 return -1;
1578 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1579 os_strlen(pin));
1580 }
1581
1582
1583 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1584 int id)
1585 {
1586 u8 u[UUID_LEN];
1587 struct wpa_ssid *ssid;
1588 struct wps_credential cred;
1589
1590 if (uuid_str2bin(uuid, u))
1591 return -1;
1592 ssid = wpa_config_get_network(wpa_s->conf, id);
1593 if (ssid == NULL || ssid->ssid == NULL)
1594 return -1;
1595
1596 os_memset(&cred, 0, sizeof(cred));
1597 if (ssid->ssid_len > 32)
1598 return -1;
1599 os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1600 cred.ssid_len = ssid->ssid_len;
1601 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1602 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1603 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1604 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1605 cred.encr_type = WPS_ENCR_AES;
1606 else
1607 cred.encr_type = WPS_ENCR_TKIP;
1608 if (ssid->passphrase) {
1609 cred.key_len = os_strlen(ssid->passphrase);
1610 if (cred.key_len >= 64)
1611 return -1;
1612 os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1613 } else if (ssid->psk_set) {
1614 cred.key_len = 32;
1615 os_memcpy(cred.key, ssid->psk, 32);
1616 } else
1617 return -1;
1618 } else {
1619 cred.auth_type = WPS_AUTH_OPEN;
1620 cred.encr_type = WPS_ENCR_NONE;
1621 }
1622 return wps_er_set_config(wpa_s->wps_er, u, &cred);
1623 }
1624
1625
1626 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1627 const char *pin, struct wps_new_ap_settings *settings)
1628 {
1629 u8 u[UUID_LEN];
1630 struct wps_credential cred;
1631 size_t len;
1632
1633 if (uuid_str2bin(uuid, u))
1634 return -1;
1635 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1636 settings->encr == NULL || settings->key_hex == NULL)
1637 return -1;
1638
1639 os_memset(&cred, 0, sizeof(cred));
1640 len = os_strlen(settings->ssid_hex);
1641 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1642 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1643 return -1;
1644 cred.ssid_len = len / 2;
1645
1646 len = os_strlen(settings->key_hex);
1647 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1648 hexstr2bin(settings->key_hex, cred.key, len / 2))
1649 return -1;
1650 cred.key_len = len / 2;
1651
1652 if (os_strcmp(settings->auth, "OPEN") == 0)
1653 cred.auth_type = WPS_AUTH_OPEN;
1654 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1655 cred.auth_type = WPS_AUTH_WPAPSK;
1656 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1657 cred.auth_type = WPS_AUTH_WPA2PSK;
1658 else
1659 return -1;
1660
1661 if (os_strcmp(settings->encr, "NONE") == 0)
1662 cred.encr_type = WPS_ENCR_NONE;
1663 else if (os_strcmp(settings->encr, "WEP") == 0)
1664 cred.encr_type = WPS_ENCR_WEP;
1665 else if (os_strcmp(settings->encr, "TKIP") == 0)
1666 cred.encr_type = WPS_ENCR_TKIP;
1667 else if (os_strcmp(settings->encr, "CCMP") == 0)
1668 cred.encr_type = WPS_ENCR_AES;
1669 else
1670 return -1;
1671
1672 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1673 os_strlen(pin), &cred);
1674 }
1675
1676
1677 #ifdef CONFIG_WPS_NFC
1678 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1679 int ndef, const char *uuid)
1680 {
1681 struct wpabuf *ret;
1682 u8 u[UUID_LEN];
1683
1684 if (!wpa_s->wps_er)
1685 return NULL;
1686
1687 if (uuid_str2bin(uuid, u))
1688 return NULL;
1689
1690 ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1691 if (ndef && ret) {
1692 struct wpabuf *tmp;
1693 tmp = ndef_build_wifi(ret);
1694 wpabuf_free(ret);
1695 if (tmp == NULL)
1696 return NULL;
1697 ret = tmp;
1698 }
1699
1700 return ret;
1701 }
1702 #endif /* CONFIG_WPS_NFC */
1703
1704
1705 static int callbacks_pending = 0;
1706
1707 static void wpas_wps_terminate_cb(void *ctx)
1708 {
1709 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1710 if (--callbacks_pending <= 0)
1711 eloop_terminate();
1712 }
1713 #endif /* CONFIG_WPS_ER */
1714
1715
1716 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1717 {
1718 #ifdef CONFIG_WPS_ER
1719 if (wpa_s->wps_er) {
1720 callbacks_pending++;
1721 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1722 wpa_s->wps_er = NULL;
1723 return 1;
1724 }
1725 #endif /* CONFIG_WPS_ER */
1726 return 0;
1727 }
1728
1729
1730 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1731 {
1732 struct wpa_ssid *ssid;
1733
1734 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1735 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1736 return 1;
1737 }
1738
1739 return 0;
1740 }
1741
1742
1743 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1744 {
1745 struct wps_context *wps = wpa_s->wps;
1746
1747 if (wps == NULL)
1748 return;
1749
1750 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1751 wps->config_methods = wps_config_methods_str2bin(
1752 wpa_s->conf->config_methods);
1753 if ((wps->config_methods &
1754 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1755 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1756 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1757 "config methods are not allowed at the "
1758 "same time");
1759 wps->config_methods &= ~WPS_CONFIG_LABEL;
1760 }
1761 }
1762 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1763
1764 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1765 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1766 WPS_DEV_TYPE_LEN);
1767
1768 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1769 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1770 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1771 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1772 }
1773
1774 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1775 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1776
1777 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1778 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1779
1780 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1781 wpas_wps_set_uuid(wpa_s, wps);
1782
1783 if (wpa_s->conf->changed_parameters &
1784 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1785 /* Update pointers to make sure they refer current values */
1786 wps->dev.device_name = wpa_s->conf->device_name;
1787 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1788 wps->dev.model_name = wpa_s->conf->model_name;
1789 wps->dev.model_number = wpa_s->conf->model_number;
1790 wps->dev.serial_number = wpa_s->conf->serial_number;
1791 }
1792 }
1793
1794
1795 #ifdef CONFIG_WPS_NFC
1796
1797 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1798 {
1799 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1800 &wpa_s->conf->wps_nfc_dh_pubkey,
1801 &wpa_s->conf->wps_nfc_dh_privkey,
1802 &wpa_s->conf->wps_nfc_dev_pw);
1803 }
1804
1805
1806 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1807 {
1808 struct wps_context *wps = wpa_s->wps;
1809 char pw[32 * 2 + 1];
1810
1811 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1812 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1813 wpa_s->conf->wps_nfc_dev_pw == NULL)
1814 return -1;
1815
1816 dh5_free(wps->dh_ctx);
1817 wpabuf_free(wps->dh_pubkey);
1818 wpabuf_free(wps->dh_privkey);
1819 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1820 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1821 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1822 wps->dh_ctx = NULL;
1823 wpabuf_free(wps->dh_pubkey);
1824 wps->dh_pubkey = NULL;
1825 wpabuf_free(wps->dh_privkey);
1826 wps->dh_privkey = NULL;
1827 return -1;
1828 }
1829 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1830 if (wps->dh_ctx == NULL)
1831 return -1;
1832
1833 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1834 wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1835 wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1836 return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1837 wpa_s->conf->wps_nfc_dev_pw_id);
1838 }
1839
1840
1841 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1842 struct wps_parse_attr *attr)
1843 {
1844 if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1845 return -1;
1846
1847 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1848 return 0;
1849
1850 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1851 "based on the received credential added");
1852 wpa_s->normal_scans = 0;
1853 wpa_supplicant_reinit_autoscan(wpa_s);
1854 wpa_s->disconnected = 0;
1855 wpa_s->reassociate = 1;
1856 wpa_supplicant_req_scan(wpa_s, 0, 0);
1857
1858 return 0;
1859 }
1860
1861
1862 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1863 struct wps_parse_attr *attr)
1864 {
1865 return wps_registrar_add_nfc_password_token(
1866 wpa_s->wps->registrar, attr->oob_dev_password,
1867 attr->oob_dev_password_len);
1868 }
1869
1870
1871 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1872 const struct wpabuf *wps)
1873 {
1874 struct wps_parse_attr attr;
1875
1876 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1877
1878 if (wps_parse_msg(wps, &attr)) {
1879 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1880 return -1;
1881 }
1882
1883 if (attr.num_cred)
1884 return wpas_wps_use_cred(wpa_s, &attr);
1885
1886 #ifdef CONFIG_WPS_ER
1887 if (attr.oob_dev_password)
1888 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1889 #endif /* CONFIG_WPS_ER */
1890
1891 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1892 return -1;
1893 }
1894
1895
1896 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1897 const struct wpabuf *data)
1898 {
1899 const struct wpabuf *wps = data;
1900 struct wpabuf *tmp = NULL;
1901 int ret;
1902
1903 if (wpabuf_len(data) < 4)
1904 return -1;
1905
1906 if (*wpabuf_head_u8(data) != 0x10) {
1907 /* Assume this contains full NDEF record */
1908 tmp = ndef_parse_wifi(data);
1909 if (tmp == NULL) {
1910 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1911 return -1;
1912 }
1913 wps = tmp;
1914 }
1915
1916 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1917 wpabuf_free(tmp);
1918 return ret;
1919 }
1920
1921 #endif /* CONFIG_WPS_NFC */
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