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[thirdparty/hostap.git] / wpa_supplicant / wps_supplicant.c
1 /*
2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008-2014, 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 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
47 {
48 os_free(wpa_s->wps_ap);
49 wpa_s->wps_ap = NULL;
50 wpa_s->num_wps_ap = 0;
51 wpa_s->wps_ap_iter = 0;
52 }
53
54
55 static void wpas_wps_assoc_with_cred(void *eloop_ctx, void *timeout_ctx)
56 {
57 struct wpa_supplicant *wpa_s = eloop_ctx;
58 int use_fast_assoc = timeout_ctx != NULL;
59
60 wpa_printf(MSG_DEBUG, "WPS: Continuing association after eapol_cb");
61 if (!use_fast_assoc ||
62 wpa_supplicant_fast_associate(wpa_s) != 1)
63 wpa_supplicant_req_scan(wpa_s, 0, 0);
64 }
65
66
67 static void wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant *wpa_s)
68 {
69 eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 0);
70 eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 1);
71 }
72
73
74 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
75 {
76 if (wpas_p2p_wps_eapol_cb(wpa_s) > 0)
77 return 1;
78
79 if (!wpa_s->wps_success &&
80 wpa_s->current_ssid &&
81 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
82 const u8 *bssid = wpa_s->bssid;
83 if (is_zero_ether_addr(bssid))
84 bssid = wpa_s->pending_bssid;
85
86 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
87 " did not succeed - continue trying to find "
88 "suitable AP", MAC2STR(bssid));
89 wpa_blacklist_add(wpa_s, bssid);
90
91 wpa_supplicant_deauthenticate(wpa_s,
92 WLAN_REASON_DEAUTH_LEAVING);
93 wpa_s->reassociate = 1;
94 wpa_supplicant_req_scan(wpa_s,
95 wpa_s->blacklist_cleared ? 5 : 0, 0);
96 wpa_s->blacklist_cleared = 0;
97 return 1;
98 }
99
100 wpas_wps_clear_ap_info(wpa_s);
101 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
102 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
103 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
104
105 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
106 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
107 int disabled = wpa_s->current_ssid->disabled;
108 unsigned int freq = wpa_s->assoc_freq;
109 struct wpa_bss *bss;
110 struct wpa_ssid *ssid = NULL;
111 int use_fast_assoc = 0;
112
113 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
114 "try to associate with the received credential "
115 "(freq=%u)", freq);
116 wpa_supplicant_deauthenticate(wpa_s,
117 WLAN_REASON_DEAUTH_LEAVING);
118 if (disabled) {
119 wpa_printf(MSG_DEBUG, "WPS: Current network is "
120 "disabled - wait for user to enable");
121 return 1;
122 }
123 wpa_s->after_wps = 5;
124 wpa_s->wps_freq = freq;
125 wpa_s->normal_scans = 0;
126 wpa_s->reassociate = 1;
127
128 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association "
129 "without a new scan can be used");
130 bss = wpa_supplicant_pick_network(wpa_s, &ssid);
131 if (bss) {
132 struct wpabuf *wps;
133 struct wps_parse_attr attr;
134
135 wps = wpa_bss_get_vendor_ie_multi(bss,
136 WPS_IE_VENDOR_TYPE);
137 if (wps && wps_parse_msg(wps, &attr) == 0 &&
138 attr.wps_state &&
139 *attr.wps_state == WPS_STATE_CONFIGURED)
140 use_fast_assoc = 1;
141 wpabuf_free(wps);
142 }
143
144 /*
145 * Complete the next step from an eloop timeout to allow pending
146 * driver events related to the disconnection to be processed
147 * first. This makes it less likely for disconnection event to
148 * cause problems with the following connection.
149 */
150 wpa_printf(MSG_DEBUG, "WPS: Continue association from timeout");
151 wpas_wps_assoc_with_cred_cancel(wpa_s);
152 eloop_register_timeout(0, 10000,
153 wpas_wps_assoc_with_cred, wpa_s,
154 use_fast_assoc ? (void *) 1 :
155 (void *) 0);
156 return 1;
157 }
158
159 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
160 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
161 "for external credential processing");
162 wpas_clear_wps(wpa_s);
163 wpa_supplicant_deauthenticate(wpa_s,
164 WLAN_REASON_DEAUTH_LEAVING);
165 return 1;
166 }
167
168 return 0;
169 }
170
171
172 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
173 struct wpa_ssid *ssid,
174 const struct wps_credential *cred)
175 {
176 struct wpa_driver_capa capa;
177 struct wpa_bss *bss;
178 const u8 *ie;
179 struct wpa_ie_data adv;
180 int wpa2 = 0, ccmp = 0;
181
182 /*
183 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
184 * case they are configured for mixed mode operation (WPA+WPA2 and
185 * TKIP+CCMP). Try to use scan results to figure out whether the AP
186 * actually supports stronger security and select that if the client
187 * has support for it, too.
188 */
189
190 if (wpa_drv_get_capa(wpa_s, &capa))
191 return; /* Unknown what driver supports */
192
193 if (ssid->ssid == NULL)
194 return;
195 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
196 if (bss == NULL) {
197 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
198 "table - use credential as-is");
199 return;
200 }
201
202 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
203
204 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
205 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
206 wpa2 = 1;
207 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
208 ccmp = 1;
209 } else {
210 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
211 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
212 adv.pairwise_cipher & WPA_CIPHER_CCMP)
213 ccmp = 1;
214 }
215
216 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
217 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
218 /*
219 * TODO: This could be the initial AP configuration and the
220 * Beacon contents could change shortly. Should request a new
221 * scan and delay addition of the network until the updated
222 * scan results are available.
223 */
224 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
225 "support - use credential as-is");
226 return;
227 }
228
229 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
230 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
231 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
232 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
233 "based on scan results");
234 if (wpa_s->conf->ap_scan == 1)
235 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
236 else
237 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
238 }
239
240 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
241 (ssid->proto & WPA_PROTO_WPA) &&
242 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
243 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
244 "based on scan results");
245 if (wpa_s->conf->ap_scan == 1)
246 ssid->proto |= WPA_PROTO_RSN;
247 else
248 ssid->proto = WPA_PROTO_RSN;
249 }
250 }
251
252
253 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s,
254 struct wpa_ssid *new_ssid)
255 {
256 struct wpa_ssid *ssid, *next;
257
258 for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid;
259 ssid = next, next = ssid ? ssid->next : NULL) {
260 /*
261 * new_ssid has already been added to the list in
262 * wpas_wps_add_network(), so skip it.
263 */
264 if (ssid == new_ssid)
265 continue;
266
267 if (ssid->bssid_set || new_ssid->bssid_set) {
268 if (ssid->bssid_set != new_ssid->bssid_set)
269 continue;
270 if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) !=
271 0)
272 continue;
273 }
274
275 /* compare SSID */
276 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len)
277 continue;
278
279 if (ssid->ssid && new_ssid->ssid) {
280 if (os_memcmp(ssid->ssid, new_ssid->ssid,
281 ssid->ssid_len) != 0)
282 continue;
283 } else if (ssid->ssid || new_ssid->ssid)
284 continue;
285
286 /* compare security parameters */
287 if (ssid->auth_alg != new_ssid->auth_alg ||
288 ssid->key_mgmt != new_ssid->key_mgmt ||
289 (ssid->group_cipher != new_ssid->group_cipher &&
290 !(ssid->group_cipher & new_ssid->group_cipher &
291 WPA_CIPHER_CCMP)))
292 continue;
293
294 /*
295 * Some existing WPS APs will send two creds in case they are
296 * configured for mixed mode operation (WPA+WPA2 and TKIP+CCMP).
297 * Try to merge these two creds if they are received in the same
298 * M8 message.
299 */
300 if (ssid->wps_run && ssid->wps_run == new_ssid->wps_run &&
301 wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
302 if (new_ssid->passphrase && ssid->passphrase &&
303 os_strcmp(new_ssid->passphrase, ssid->passphrase) !=
304 0) {
305 wpa_printf(MSG_DEBUG,
306 "WPS: M8 Creds with different passphrase - do not merge");
307 continue;
308 }
309
310 if (new_ssid->psk_set &&
311 (!ssid->psk_set ||
312 os_memcmp(new_ssid->psk, ssid->psk, 32) != 0)) {
313 wpa_printf(MSG_DEBUG,
314 "WPS: M8 Creds with different PSK - do not merge");
315 continue;
316 }
317
318 if ((new_ssid->passphrase && !ssid->passphrase) ||
319 (!new_ssid->passphrase && ssid->passphrase)) {
320 wpa_printf(MSG_DEBUG,
321 "WPS: M8 Creds with different passphrase/PSK type - do not merge");
322 continue;
323 }
324
325 wpa_printf(MSG_DEBUG,
326 "WPS: Workaround - merge likely WPA/WPA2-mixed mode creds in same M8 message");
327 new_ssid->proto |= ssid->proto;
328 new_ssid->pairwise_cipher |= ssid->pairwise_cipher;
329 } else {
330 /*
331 * proto and pairwise_cipher difference matter for
332 * non-mixed-mode creds.
333 */
334 if (ssid->proto != new_ssid->proto ||
335 ssid->pairwise_cipher != new_ssid->pairwise_cipher)
336 continue;
337 }
338
339 /* Remove the duplicated older network entry. */
340 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id);
341 wpas_notify_network_removed(wpa_s, ssid);
342 if (wpa_s->current_ssid == ssid)
343 wpa_s->current_ssid = NULL;
344 wpa_config_remove_network(wpa_s->conf, ssid->id);
345 }
346 }
347
348
349 static int wpa_supplicant_wps_cred(void *ctx,
350 const struct wps_credential *cred)
351 {
352 struct wpa_supplicant *wpa_s = ctx;
353 struct wpa_ssid *ssid = wpa_s->current_ssid;
354 u16 auth_type;
355 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
356 int registrar = 0;
357 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
358
359 if ((wpa_s->conf->wps_cred_processing == 1 ||
360 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
361 size_t blen = cred->cred_attr_len * 2 + 1;
362 char *buf = os_malloc(blen);
363 if (buf) {
364 wpa_snprintf_hex(buf, blen,
365 cred->cred_attr, cred->cred_attr_len);
366 wpa_msg(wpa_s, MSG_INFO, "%s%s",
367 WPS_EVENT_CRED_RECEIVED, buf);
368 os_free(buf);
369 }
370
371 wpas_notify_wps_credential(wpa_s, cred);
372 } else
373 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
374
375 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
376 cred->cred_attr, cred->cred_attr_len);
377
378 if (wpa_s->conf->wps_cred_processing == 1)
379 return 0;
380
381 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
382 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
383 cred->auth_type);
384 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
385 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
386 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
387 cred->key, cred->key_len);
388 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
389 MAC2STR(cred->mac_addr));
390
391 auth_type = cred->auth_type;
392 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
393 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
394 "auth_type into WPA2PSK");
395 auth_type = WPS_AUTH_WPA2PSK;
396 }
397
398 if (auth_type != WPS_AUTH_OPEN &&
399 auth_type != WPS_AUTH_WPAPSK &&
400 auth_type != WPS_AUTH_WPA2PSK) {
401 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
402 "unsupported authentication type 0x%x",
403 auth_type);
404 return 0;
405 }
406
407 if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
408 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
409 wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
410 "invalid Network Key length %lu",
411 (unsigned long) cred->key_len);
412 return -1;
413 }
414 }
415
416 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
417 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
418 "on the received credential");
419 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
420 if (ssid->eap.identity &&
421 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
422 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
423 WSC_ID_REGISTRAR_LEN) == 0)
424 registrar = 1;
425 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
426 os_free(ssid->eap.identity);
427 ssid->eap.identity = NULL;
428 ssid->eap.identity_len = 0;
429 os_free(ssid->eap.phase1);
430 ssid->eap.phase1 = NULL;
431 os_free(ssid->eap.eap_methods);
432 ssid->eap.eap_methods = NULL;
433 if (!ssid->p2p_group) {
434 ssid->temporary = 0;
435 ssid->bssid_set = 0;
436 }
437 ssid->disabled_until.sec = 0;
438 ssid->disabled_until.usec = 0;
439 ssid->auth_failures = 0;
440 } else {
441 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
442 "received credential");
443 ssid = wpa_config_add_network(wpa_s->conf);
444 if (ssid == NULL)
445 return -1;
446 if (wpa_s->current_ssid) {
447 /*
448 * Should the GO issue multiple credentials for some
449 * reason, each credential should be marked as a
450 * temporary P2P group similarly to the one that gets
451 * marked as such based on the pre-configured values
452 * used for the WPS network block.
453 */
454 ssid->p2p_group = wpa_s->current_ssid->p2p_group;
455 ssid->temporary = wpa_s->current_ssid->temporary;
456 }
457 wpas_notify_network_added(wpa_s, ssid);
458 }
459
460 wpa_config_set_network_defaults(ssid);
461 ssid->wps_run = wpa_s->wps_run;
462
463 os_free(ssid->ssid);
464 ssid->ssid = os_malloc(cred->ssid_len);
465 if (ssid->ssid) {
466 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
467 ssid->ssid_len = cred->ssid_len;
468 }
469
470 switch (cred->encr_type) {
471 case WPS_ENCR_NONE:
472 break;
473 case WPS_ENCR_TKIP:
474 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
475 break;
476 case WPS_ENCR_AES:
477 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
478 if (wpa_s->drv_capa_known &&
479 (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_GCMP)) {
480 ssid->pairwise_cipher |= WPA_CIPHER_GCMP;
481 ssid->group_cipher |= WPA_CIPHER_GCMP;
482 }
483 break;
484 }
485
486 switch (auth_type) {
487 case WPS_AUTH_OPEN:
488 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
489 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
490 ssid->proto = 0;
491 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
492 if (registrar) {
493 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
494 "id=%d - Credentials for an open "
495 "network disabled by default - use "
496 "'select_network %d' to enable",
497 ssid->id, ssid->id);
498 ssid->disabled = 1;
499 }
500 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
501 break;
502 case WPS_AUTH_WPAPSK:
503 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
504 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
505 ssid->proto = WPA_PROTO_WPA;
506 break;
507 case WPS_AUTH_WPA2PSK:
508 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
509 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
510 ssid->proto = WPA_PROTO_RSN;
511 break;
512 }
513
514 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
515 if (cred->key_len == 2 * PMK_LEN) {
516 if (hexstr2bin((const char *) cred->key, ssid->psk,
517 PMK_LEN)) {
518 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
519 "Key");
520 return -1;
521 }
522 ssid->psk_set = 1;
523 ssid->export_keys = 1;
524 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
525 os_free(ssid->passphrase);
526 ssid->passphrase = os_malloc(cred->key_len + 1);
527 if (ssid->passphrase == NULL)
528 return -1;
529 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
530 ssid->passphrase[cred->key_len] = '\0';
531 wpa_config_update_psk(ssid);
532 ssid->export_keys = 1;
533 } else {
534 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
535 "length %lu",
536 (unsigned long) cred->key_len);
537 return -1;
538 }
539 }
540
541 wpas_wps_security_workaround(wpa_s, ssid, cred);
542
543 wpas_wps_remove_dup_network(wpa_s, ssid);
544
545 #ifndef CONFIG_NO_CONFIG_WRITE
546 if (wpa_s->conf->update_config &&
547 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
548 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
549 return -1;
550 }
551 #endif /* CONFIG_NO_CONFIG_WRITE */
552
553 /*
554 * Optimize the post-WPS scan based on the channel used during
555 * the provisioning in case EAP-Failure is not received.
556 */
557 wpa_s->after_wps = 5;
558 wpa_s->wps_freq = wpa_s->assoc_freq;
559
560 return 0;
561 }
562
563
564 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
565 struct wps_event_m2d *m2d)
566 {
567 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
568 "dev_password_id=%d config_error=%d",
569 m2d->dev_password_id, m2d->config_error);
570 wpas_notify_wps_event_m2d(wpa_s, m2d);
571 #ifdef CONFIG_P2P
572 if (wpa_s->parent && wpa_s->parent != wpa_s) {
573 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
574 "dev_password_id=%d config_error=%d",
575 m2d->dev_password_id, m2d->config_error);
576 }
577 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
578 /*
579 * Notify P2P from eloop timeout to avoid issues with the
580 * interface getting removed while processing a message.
581 */
582 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, wpa_s,
583 NULL);
584 }
585 #endif /* CONFIG_P2P */
586 }
587
588
589 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
590 {
591 struct wpa_supplicant *wpa_s = eloop_ctx;
592 wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
593 wpas_clear_wps(wpa_s);
594 }
595
596
597 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
598 struct wps_event_fail *fail)
599 {
600 if (fail->error_indication > 0 &&
601 fail->error_indication < NUM_WPS_EI_VALUES) {
602 wpa_msg(wpa_s, MSG_INFO,
603 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
604 fail->msg, fail->config_error, fail->error_indication,
605 wps_ei_str(fail->error_indication));
606 if (wpa_s->parent && wpa_s->parent != wpa_s)
607 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
608 "msg=%d config_error=%d reason=%d (%s)",
609 fail->msg, fail->config_error,
610 fail->error_indication,
611 wps_ei_str(fail->error_indication));
612 } else {
613 wpa_msg(wpa_s, MSG_INFO,
614 WPS_EVENT_FAIL "msg=%d config_error=%d",
615 fail->msg, fail->config_error);
616 if (wpa_s->parent && wpa_s->parent != wpa_s)
617 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
618 "msg=%d config_error=%d",
619 fail->msg, fail->config_error);
620 }
621
622 /*
623 * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
624 */
625 wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
626 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
627 eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);
628
629 wpas_notify_wps_event_fail(wpa_s, fail);
630 wpas_p2p_wps_failed(wpa_s, fail);
631 }
632
633
634 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
635
636 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
637 {
638 struct wpa_ssid *ssid;
639 int changed = 0;
640
641 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
642
643 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
644 if (ssid->disabled_for_connect && ssid->disabled) {
645 ssid->disabled_for_connect = 0;
646 ssid->disabled = 0;
647 wpas_notify_network_enabled_changed(wpa_s, ssid);
648 changed++;
649 }
650 }
651
652 if (changed) {
653 #ifndef CONFIG_NO_CONFIG_WRITE
654 if (wpa_s->conf->update_config &&
655 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
656 wpa_printf(MSG_DEBUG, "WPS: Failed to update "
657 "configuration");
658 }
659 #endif /* CONFIG_NO_CONFIG_WRITE */
660 }
661 }
662
663
664 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
665 {
666 struct wpa_supplicant *wpa_s = eloop_ctx;
667 /* Enable the networks disabled during wpas_wps_reassoc */
668 wpas_wps_reenable_networks(wpa_s);
669 }
670
671
672 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
673 {
674 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
675 wpa_s->wps_success = 1;
676 wpas_notify_wps_event_success(wpa_s);
677 if (wpa_s->current_ssid)
678 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
679 wpa_s->extra_blacklist_count = 0;
680
681 /*
682 * Enable the networks disabled during wpas_wps_reassoc after 10
683 * seconds. The 10 seconds timer is to allow the data connection to be
684 * formed before allowing other networks to be selected.
685 */
686 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
687 NULL);
688
689 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
690 }
691
692
693 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
694 struct wps_event_er_ap *ap)
695 {
696 char uuid_str[100];
697 char dev_type[WPS_DEV_TYPE_BUFSIZE];
698
699 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
700 if (ap->pri_dev_type)
701 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
702 sizeof(dev_type));
703 else
704 dev_type[0] = '\0';
705
706 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
707 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
708 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
709 ap->friendly_name ? ap->friendly_name : "",
710 ap->manufacturer ? ap->manufacturer : "",
711 ap->model_description ? ap->model_description : "",
712 ap->model_name ? ap->model_name : "",
713 ap->manufacturer_url ? ap->manufacturer_url : "",
714 ap->model_url ? ap->model_url : "");
715 }
716
717
718 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
719 struct wps_event_er_ap *ap)
720 {
721 char uuid_str[100];
722 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
723 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
724 }
725
726
727 static void wpa_supplicant_wps_event_er_enrollee_add(
728 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
729 {
730 char uuid_str[100];
731 char dev_type[WPS_DEV_TYPE_BUFSIZE];
732
733 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
734 if (enrollee->pri_dev_type)
735 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
736 sizeof(dev_type));
737 else
738 dev_type[0] = '\0';
739
740 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
741 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
742 "|%s|%s|%s|%s|%s|",
743 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
744 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
745 enrollee->dev_name ? enrollee->dev_name : "",
746 enrollee->manufacturer ? enrollee->manufacturer : "",
747 enrollee->model_name ? enrollee->model_name : "",
748 enrollee->model_number ? enrollee->model_number : "",
749 enrollee->serial_number ? enrollee->serial_number : "");
750 }
751
752
753 static void wpa_supplicant_wps_event_er_enrollee_remove(
754 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
755 {
756 char uuid_str[100];
757 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
758 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
759 uuid_str, MAC2STR(enrollee->mac_addr));
760 }
761
762
763 static void wpa_supplicant_wps_event_er_ap_settings(
764 struct wpa_supplicant *wpa_s,
765 struct wps_event_er_ap_settings *ap_settings)
766 {
767 char uuid_str[100];
768 char key_str[65];
769 const struct wps_credential *cred = ap_settings->cred;
770
771 key_str[0] = '\0';
772 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
773 if (cred->key_len >= 8 && cred->key_len <= 64) {
774 os_memcpy(key_str, cred->key, cred->key_len);
775 key_str[cred->key_len] = '\0';
776 }
777 }
778
779 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
780 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
781 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
782 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
783 "key=%s",
784 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
785 cred->auth_type, cred->encr_type, key_str);
786 }
787
788
789 static void wpa_supplicant_wps_event_er_set_sel_reg(
790 struct wpa_supplicant *wpa_s,
791 struct wps_event_er_set_selected_registrar *ev)
792 {
793 char uuid_str[100];
794
795 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
796 switch (ev->state) {
797 case WPS_ER_SET_SEL_REG_START:
798 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
799 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
800 "sel_reg_config_methods=0x%x",
801 uuid_str, ev->sel_reg, ev->dev_passwd_id,
802 ev->sel_reg_config_methods);
803 break;
804 case WPS_ER_SET_SEL_REG_DONE:
805 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
806 "uuid=%s state=DONE", uuid_str);
807 break;
808 case WPS_ER_SET_SEL_REG_FAILED:
809 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
810 "uuid=%s state=FAILED", uuid_str);
811 break;
812 }
813 }
814
815
816 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
817 union wps_event_data *data)
818 {
819 struct wpa_supplicant *wpa_s = ctx;
820 switch (event) {
821 case WPS_EV_M2D:
822 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
823 break;
824 case WPS_EV_FAIL:
825 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
826 break;
827 case WPS_EV_SUCCESS:
828 wpa_supplicant_wps_event_success(wpa_s);
829 break;
830 case WPS_EV_PWD_AUTH_FAIL:
831 #ifdef CONFIG_AP
832 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
833 wpa_supplicant_ap_pwd_auth_fail(wpa_s);
834 #endif /* CONFIG_AP */
835 break;
836 case WPS_EV_PBC_OVERLAP:
837 break;
838 case WPS_EV_PBC_TIMEOUT:
839 break;
840 case WPS_EV_PBC_ACTIVE:
841 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
842 break;
843 case WPS_EV_PBC_DISABLE:
844 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
845 break;
846 case WPS_EV_ER_AP_ADD:
847 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
848 break;
849 case WPS_EV_ER_AP_REMOVE:
850 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
851 break;
852 case WPS_EV_ER_ENROLLEE_ADD:
853 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
854 &data->enrollee);
855 break;
856 case WPS_EV_ER_ENROLLEE_REMOVE:
857 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
858 &data->enrollee);
859 break;
860 case WPS_EV_ER_AP_SETTINGS:
861 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
862 &data->ap_settings);
863 break;
864 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
865 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
866 &data->set_sel_reg);
867 break;
868 case WPS_EV_AP_PIN_SUCCESS:
869 break;
870 }
871 }
872
873
874 static int wpa_supplicant_wps_rf_band(void *ctx)
875 {
876 struct wpa_supplicant *wpa_s = ctx;
877
878 if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
879 return 0;
880
881 return (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
882 }
883
884
885 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
886 {
887 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
888 eap_is_wps_pin_enrollee(&ssid->eap))
889 return WPS_REQ_ENROLLEE;
890 else
891 return WPS_REQ_REGISTRAR;
892 }
893
894
895 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
896 {
897 int id;
898 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
899
900 wpa_s->after_wps = 0;
901 wpa_s->known_wps_freq = 0;
902
903 prev_current = wpa_s->current_ssid;
904
905 /* Enable the networks disabled during wpas_wps_reassoc */
906 wpas_wps_reenable_networks(wpa_s);
907
908 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
909 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
910
911 /* Remove any existing WPS network from configuration */
912 ssid = wpa_s->conf->ssid;
913 while (ssid) {
914 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
915 if (ssid == wpa_s->current_ssid) {
916 wpa_supplicant_deauthenticate(
917 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
918 }
919 id = ssid->id;
920 remove_ssid = ssid;
921 } else
922 id = -1;
923 ssid = ssid->next;
924 if (id >= 0) {
925 if (prev_current == remove_ssid) {
926 wpa_sm_set_config(wpa_s->wpa, NULL);
927 eapol_sm_notify_config(wpa_s->eapol, NULL,
928 NULL);
929 }
930 wpas_notify_network_removed(wpa_s, remove_ssid);
931 wpa_config_remove_network(wpa_s->conf, id);
932 }
933 }
934
935 wpas_wps_clear_ap_info(wpa_s);
936 }
937
938
939 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
940 {
941 struct wpa_supplicant *wpa_s = eloop_ctx;
942 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
943 "out");
944 wpas_clear_wps(wpa_s);
945 }
946
947
948 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
949 int registrar, const u8 *dev_addr,
950 const u8 *bssid)
951 {
952 struct wpa_ssid *ssid;
953
954 ssid = wpa_config_add_network(wpa_s->conf);
955 if (ssid == NULL)
956 return NULL;
957 wpas_notify_network_added(wpa_s, ssid);
958 wpa_config_set_network_defaults(ssid);
959 ssid->temporary = 1;
960 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
961 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
962 wpa_config_set(ssid, "identity", registrar ?
963 "\"" WSC_ID_REGISTRAR "\"" :
964 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
965 wpas_notify_network_removed(wpa_s, ssid);
966 wpa_config_remove_network(wpa_s->conf, ssid->id);
967 return NULL;
968 }
969
970 #ifdef CONFIG_P2P
971 if (dev_addr)
972 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN);
973 #endif /* CONFIG_P2P */
974
975 if (bssid) {
976 #ifndef CONFIG_P2P
977 struct wpa_bss *bss;
978 int count = 0;
979 #endif /* CONFIG_P2P */
980
981 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
982 ssid->bssid_set = 1;
983
984 /*
985 * Note: With P2P, the SSID may change at the time the WPS
986 * provisioning is started, so better not filter the AP based
987 * on the current SSID in the scan results.
988 */
989 #ifndef CONFIG_P2P
990 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
991 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
992 continue;
993
994 os_free(ssid->ssid);
995 ssid->ssid = os_malloc(bss->ssid_len);
996 if (ssid->ssid == NULL)
997 break;
998 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
999 ssid->ssid_len = bss->ssid_len;
1000 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
1001 "scan results",
1002 ssid->ssid, ssid->ssid_len);
1003 count++;
1004 }
1005
1006 if (count > 1) {
1007 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
1008 "for the AP; use wildcard");
1009 os_free(ssid->ssid);
1010 ssid->ssid = NULL;
1011 ssid->ssid_len = 0;
1012 }
1013 #endif /* CONFIG_P2P */
1014 }
1015
1016 return ssid;
1017 }
1018
1019
1020 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
1021 struct wpa_ssid *selected)
1022 {
1023 struct wpa_ssid *ssid;
1024
1025 if (wpa_s->current_ssid)
1026 wpa_supplicant_deauthenticate(
1027 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1028
1029 /* Mark all other networks disabled and trigger reassociation */
1030 ssid = wpa_s->conf->ssid;
1031 while (ssid) {
1032 int was_disabled = ssid->disabled;
1033 ssid->disabled_for_connect = 0;
1034 /*
1035 * In case the network object corresponds to a persistent group
1036 * then do not send out network disabled signal. In addition,
1037 * do not change disabled status of persistent network objects
1038 * from 2 to 1 should we connect to another network.
1039 */
1040 if (was_disabled != 2) {
1041 ssid->disabled = ssid != selected;
1042 if (was_disabled != ssid->disabled) {
1043 if (ssid->disabled)
1044 ssid->disabled_for_connect = 1;
1045 wpas_notify_network_enabled_changed(wpa_s,
1046 ssid);
1047 }
1048 }
1049 ssid = ssid->next;
1050 }
1051 }
1052
1053
1054 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1055 struct wpa_ssid *selected, const u8 *bssid,
1056 int freq)
1057 {
1058 struct wpa_bss *bss;
1059
1060 wpa_s->wps_run++;
1061 if (wpa_s->wps_run == 0)
1062 wpa_s->wps_run++;
1063 wpa_s->after_wps = 0;
1064 wpa_s->known_wps_freq = 0;
1065 if (freq) {
1066 wpa_s->after_wps = 5;
1067 wpa_s->wps_freq = freq;
1068 } else if (bssid) {
1069 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1070 if (bss && bss->freq > 0) {
1071 wpa_s->known_wps_freq = 1;
1072 wpa_s->wps_freq = bss->freq;
1073 }
1074 }
1075
1076 wpas_wps_temp_disable(wpa_s, selected);
1077
1078 wpa_s->disconnected = 0;
1079 wpa_s->reassociate = 1;
1080 wpa_s->scan_runs = 0;
1081 wpa_s->normal_scans = 0;
1082 wpa_s->wps_success = 0;
1083 wpa_s->blacklist_cleared = 0;
1084
1085 wpa_supplicant_cancel_sched_scan(wpa_s);
1086 wpa_supplicant_req_scan(wpa_s, 0, 0);
1087 }
1088
1089
1090 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1091 int p2p_group)
1092 {
1093 struct wpa_ssid *ssid;
1094 wpas_clear_wps(wpa_s);
1095 ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid);
1096 if (ssid == NULL)
1097 return -1;
1098 ssid->temporary = 1;
1099 ssid->p2p_group = p2p_group;
1100 #ifdef CONFIG_P2P
1101 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1102 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1103 if (ssid->ssid) {
1104 ssid->ssid_len = wpa_s->go_params->ssid_len;
1105 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1106 ssid->ssid_len);
1107 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1108 "SSID", ssid->ssid, ssid->ssid_len);
1109 }
1110 }
1111 #endif /* CONFIG_P2P */
1112 if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1113 return -1;
1114 if (wpa_s->wps_fragment_size)
1115 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1116 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1117 wpa_s, NULL);
1118 wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1119 return 0;
1120 }
1121
1122
1123 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s,
1124 const u8 *dev_addr, const u8 *bssid,
1125 const char *pin, int p2p_group, u16 dev_pw_id,
1126 const u8 *peer_pubkey_hash,
1127 const u8 *ssid_val, size_t ssid_len, int freq)
1128 {
1129 struct wpa_ssid *ssid;
1130 char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1131 unsigned int rpin = 0;
1132 char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1133
1134 wpas_clear_wps(wpa_s);
1135 if (bssid && is_zero_ether_addr(bssid))
1136 bssid = NULL;
1137 ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
1138 if (ssid == NULL) {
1139 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1140 return -1;
1141 }
1142 ssid->temporary = 1;
1143 ssid->p2p_group = p2p_group;
1144 if (ssid_val) {
1145 ssid->ssid = os_malloc(ssid_len);
1146 if (ssid->ssid) {
1147 os_memcpy(ssid->ssid, ssid_val, ssid_len);
1148 ssid->ssid_len = ssid_len;
1149 }
1150 }
1151 if (peer_pubkey_hash) {
1152 os_memcpy(hash, " pkhash=", 8);
1153 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1154 peer_pubkey_hash,
1155 WPS_OOB_PUBKEY_HASH_LEN);
1156 } else {
1157 hash[0] = '\0';
1158 }
1159 #ifdef CONFIG_P2P
1160 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1161 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1162 if (ssid->ssid) {
1163 ssid->ssid_len = wpa_s->go_params->ssid_len;
1164 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1165 ssid->ssid_len);
1166 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1167 "SSID", ssid->ssid, ssid->ssid_len);
1168 }
1169 }
1170 #endif /* CONFIG_P2P */
1171 if (pin)
1172 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1173 pin, dev_pw_id, hash);
1174 else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1175 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1176 dev_pw_id, hash);
1177 } else {
1178 rpin = wps_generate_pin();
1179 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1180 rpin, dev_pw_id, hash);
1181 }
1182 if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1183 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1184 return -1;
1185 }
1186 if (wpa_s->wps_fragment_size)
1187 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1188 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1189 wpa_s, NULL);
1190 wpa_s->wps_ap_iter = 1;
1191 wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
1192 return rpin;
1193 }
1194
1195
1196 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1197 const char *pin, int p2p_group, u16 dev_pw_id)
1198 {
1199 return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group,
1200 dev_pw_id, NULL, NULL, 0, 0);
1201 }
1202
1203
1204 /* Cancel the wps pbc/pin requests */
1205 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1206 {
1207 #ifdef CONFIG_AP
1208 if (wpa_s->ap_iface) {
1209 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1210 return wpa_supplicant_ap_wps_cancel(wpa_s);
1211 }
1212 #endif /* CONFIG_AP */
1213
1214 if (wpa_s->wpa_state == WPA_SCANNING ||
1215 wpa_s->wpa_state == WPA_DISCONNECTED) {
1216 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1217 wpa_supplicant_cancel_scan(wpa_s);
1218 wpas_clear_wps(wpa_s);
1219 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1220 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1221 "deauthenticate");
1222 wpa_supplicant_deauthenticate(wpa_s,
1223 WLAN_REASON_DEAUTH_LEAVING);
1224 wpas_clear_wps(wpa_s);
1225 } else {
1226 wpas_wps_reenable_networks(wpa_s);
1227 wpas_wps_clear_ap_info(wpa_s);
1228 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1229 0)
1230 wpas_clear_wps(wpa_s);
1231 }
1232
1233 wpa_s->after_wps = 0;
1234
1235 return 0;
1236 }
1237
1238
1239 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1240 const char *pin, struct wps_new_ap_settings *settings)
1241 {
1242 struct wpa_ssid *ssid;
1243 char val[200];
1244 char *pos, *end;
1245 int res;
1246
1247 if (!pin)
1248 return -1;
1249 wpas_clear_wps(wpa_s);
1250 ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
1251 if (ssid == NULL)
1252 return -1;
1253 ssid->temporary = 1;
1254 pos = val;
1255 end = pos + sizeof(val);
1256 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1257 if (os_snprintf_error(end - pos, res))
1258 return -1;
1259 pos += res;
1260 if (settings) {
1261 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1262 "new_encr=%s new_key=%s",
1263 settings->ssid_hex, settings->auth,
1264 settings->encr, settings->key_hex);
1265 if (os_snprintf_error(end - pos, res))
1266 return -1;
1267 pos += res;
1268 }
1269 res = os_snprintf(pos, end - pos, "\"");
1270 if (os_snprintf_error(end - pos, res))
1271 return -1;
1272 if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1273 return -1;
1274 if (wpa_s->wps_fragment_size)
1275 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1276 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1277 wpa_s, NULL);
1278 wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1279 return 0;
1280 }
1281
1282
1283 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1284 const u8 *p2p_dev_addr, const u8 *psk,
1285 size_t psk_len)
1286 {
1287 if (is_zero_ether_addr(p2p_dev_addr)) {
1288 wpa_printf(MSG_DEBUG,
1289 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1290 MAC2STR(mac_addr));
1291 } else {
1292 wpa_printf(MSG_DEBUG,
1293 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1294 " P2P Device Addr " MACSTR,
1295 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1296 }
1297 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1298
1299 /* TODO */
1300
1301 return 0;
1302 }
1303
1304
1305 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1306 const struct wps_device_data *dev)
1307 {
1308 char uuid[40], txt[400];
1309 int len;
1310 char devtype[WPS_DEV_TYPE_BUFSIZE];
1311 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1312 return;
1313 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1314 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1315 " [%s|%s|%s|%s|%s|%s]",
1316 uuid, MAC2STR(dev->mac_addr), dev->device_name,
1317 dev->manufacturer, dev->model_name,
1318 dev->model_number, dev->serial_number,
1319 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1320 sizeof(devtype)));
1321 if (!os_snprintf_error(sizeof(txt), len))
1322 wpa_printf(MSG_INFO, "%s", txt);
1323 }
1324
1325
1326 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1327 u16 sel_reg_config_methods)
1328 {
1329 #ifdef CONFIG_WPS_ER
1330 struct wpa_supplicant *wpa_s = ctx;
1331
1332 if (wpa_s->wps_er == NULL)
1333 return;
1334 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1335 "dev_password_id=%u sel_reg_config_methods=0x%x",
1336 sel_reg, dev_passwd_id, sel_reg_config_methods);
1337 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1338 sel_reg_config_methods);
1339 #endif /* CONFIG_WPS_ER */
1340 }
1341
1342
1343 static u16 wps_fix_config_methods(u16 config_methods)
1344 {
1345 if ((config_methods &
1346 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1347 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1348 wpa_printf(MSG_INFO, "WPS: Converting display to "
1349 "virtual_display for WPS 2.0 compliance");
1350 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1351 }
1352 if ((config_methods &
1353 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1354 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1355 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1356 "virtual_push_button for WPS 2.0 compliance");
1357 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1358 }
1359
1360 return config_methods;
1361 }
1362
1363
1364 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1365 struct wps_context *wps)
1366 {
1367 char buf[50];
1368 const char *src;
1369
1370 if (is_nil_uuid(wpa_s->conf->uuid)) {
1371 struct wpa_supplicant *first;
1372 first = wpa_s->global->ifaces;
1373 while (first && first->next)
1374 first = first->next;
1375 if (first && first != wpa_s) {
1376 if (wps != wpa_s->global->ifaces->wps)
1377 os_memcpy(wps->uuid,
1378 wpa_s->global->ifaces->wps->uuid,
1379 WPS_UUID_LEN);
1380 src = "from the first interface";
1381 } else {
1382 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1383 src = "based on MAC address";
1384 }
1385 } else {
1386 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1387 src = "based on configuration";
1388 }
1389
1390 uuid_bin2str(wps->uuid, buf, sizeof(buf));
1391 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1392 }
1393
1394
1395 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1396 struct wps_context *wps)
1397 {
1398 wpabuf_free(wps->dev.vendor_ext_m1);
1399 wps->dev.vendor_ext_m1 = NULL;
1400
1401 if (wpa_s->conf->wps_vendor_ext_m1) {
1402 wps->dev.vendor_ext_m1 =
1403 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1404 if (!wps->dev.vendor_ext_m1) {
1405 wpa_printf(MSG_ERROR, "WPS: Cannot "
1406 "allocate memory for vendor_ext_m1");
1407 }
1408 }
1409 }
1410
1411
1412 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1413 {
1414 struct wps_context *wps;
1415 struct wps_registrar_config rcfg;
1416 struct hostapd_hw_modes *modes;
1417 u16 m;
1418
1419 wps = os_zalloc(sizeof(*wps));
1420 if (wps == NULL)
1421 return -1;
1422
1423 wps->cred_cb = wpa_supplicant_wps_cred;
1424 wps->event_cb = wpa_supplicant_wps_event;
1425 wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1426 wps->cb_ctx = wpa_s;
1427
1428 wps->dev.device_name = wpa_s->conf->device_name;
1429 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1430 wps->dev.model_name = wpa_s->conf->model_name;
1431 wps->dev.model_number = wpa_s->conf->model_number;
1432 wps->dev.serial_number = wpa_s->conf->serial_number;
1433 wps->config_methods =
1434 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1435 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1436 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1437 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1438 "methods are not allowed at the same time");
1439 os_free(wps);
1440 return -1;
1441 }
1442 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1443 wps->dev.config_methods = wps->config_methods;
1444 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1445 WPS_DEV_TYPE_LEN);
1446
1447 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1448 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1449 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1450
1451 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1452
1453 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1454 modes = wpa_s->hw.modes;
1455 if (modes) {
1456 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1457 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1458 modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1459 wps->dev.rf_bands |= WPS_RF_24GHZ;
1460 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1461 wps->dev.rf_bands |= WPS_RF_50GHZ;
1462 }
1463 }
1464 if (wps->dev.rf_bands == 0) {
1465 /*
1466 * Default to claiming support for both bands if the driver
1467 * does not provide support for fetching supported bands.
1468 */
1469 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1470 }
1471 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1472 wpas_wps_set_uuid(wpa_s, wps);
1473
1474 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1475 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1476
1477 os_memset(&rcfg, 0, sizeof(rcfg));
1478 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1479 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1480 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1481 rcfg.cb_ctx = wpa_s;
1482
1483 wps->registrar = wps_registrar_init(wps, &rcfg);
1484 if (wps->registrar == NULL) {
1485 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1486 os_free(wps);
1487 return -1;
1488 }
1489
1490 wpa_s->wps = wps;
1491
1492 return 0;
1493 }
1494
1495
1496 #ifdef CONFIG_WPS_ER
1497 static void wpas_wps_nfc_clear(struct wps_context *wps)
1498 {
1499 wps->ap_nfc_dev_pw_id = 0;
1500 wpabuf_free(wps->ap_nfc_dh_pubkey);
1501 wps->ap_nfc_dh_pubkey = NULL;
1502 wpabuf_free(wps->ap_nfc_dh_privkey);
1503 wps->ap_nfc_dh_privkey = NULL;
1504 wpabuf_free(wps->ap_nfc_dev_pw);
1505 wps->ap_nfc_dev_pw = NULL;
1506 }
1507 #endif /* CONFIG_WPS_ER */
1508
1509
1510 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1511 {
1512 wpas_wps_assoc_with_cred_cancel(wpa_s);
1513 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1514 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1515 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1516 wpas_wps_clear_ap_info(wpa_s);
1517
1518 #ifdef CONFIG_P2P
1519 eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
1520 #endif /* CONFIG_P2P */
1521
1522 if (wpa_s->wps == NULL)
1523 return;
1524
1525 #ifdef CONFIG_WPS_ER
1526 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1527 wpa_s->wps_er = NULL;
1528 wpas_wps_nfc_clear(wpa_s->wps);
1529 #endif /* CONFIG_WPS_ER */
1530
1531 wps_registrar_deinit(wpa_s->wps->registrar);
1532 wpabuf_free(wpa_s->wps->dh_pubkey);
1533 wpabuf_free(wpa_s->wps->dh_privkey);
1534 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1535 os_free(wpa_s->wps->network_key);
1536 os_free(wpa_s->wps);
1537 wpa_s->wps = NULL;
1538 }
1539
1540
1541 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1542 struct wpa_ssid *ssid, struct wpa_bss *bss)
1543 {
1544 struct wpabuf *wps_ie;
1545
1546 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1547 return -1;
1548
1549 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1550 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1551 if (!wps_ie) {
1552 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1553 return 0;
1554 }
1555
1556 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1557 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1558 "without active PBC Registrar");
1559 wpabuf_free(wps_ie);
1560 return 0;
1561 }
1562
1563 /* TODO: overlap detection */
1564 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1565 "(Active PBC)");
1566 wpabuf_free(wps_ie);
1567 return 1;
1568 }
1569
1570 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1571 if (!wps_ie) {
1572 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1573 return 0;
1574 }
1575
1576 /*
1577 * Start with WPS APs that advertise our address as an
1578 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1579 * allow any WPS AP after couple of scans since some APs do not
1580 * set Selected Registrar attribute properly when using
1581 * external Registrar.
1582 */
1583 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1584 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1585 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1586 "without active PIN Registrar");
1587 wpabuf_free(wps_ie);
1588 return 0;
1589 }
1590 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1591 } else {
1592 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1593 "(Authorized MAC or Active PIN)");
1594 }
1595 wpabuf_free(wps_ie);
1596 return 1;
1597 }
1598
1599 if (wps_ie) {
1600 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1601 wpabuf_free(wps_ie);
1602 return 1;
1603 }
1604
1605 return -1;
1606 }
1607
1608
1609 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1610 struct wpa_ssid *ssid,
1611 struct wpa_bss *bss)
1612 {
1613 struct wpabuf *wps_ie = NULL;
1614 int ret = 0;
1615
1616 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1617 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1618 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1619 /* allow wildcard SSID for WPS PBC */
1620 ret = 1;
1621 }
1622 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1623 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1624 if (wps_ie &&
1625 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1626 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1627 /* allow wildcard SSID for WPS PIN */
1628 ret = 1;
1629 }
1630 }
1631
1632 if (!ret && ssid->bssid_set &&
1633 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1634 /* allow wildcard SSID due to hardcoded BSSID match */
1635 ret = 1;
1636 }
1637
1638 #ifdef CONFIG_WPS_STRICT
1639 if (wps_ie) {
1640 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1641 0, bss->bssid) < 0)
1642 ret = 0;
1643 if (bss->beacon_ie_len) {
1644 struct wpabuf *bcn_wps;
1645 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1646 bss, WPS_IE_VENDOR_TYPE);
1647 if (bcn_wps == NULL) {
1648 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1649 "missing from AP Beacon");
1650 ret = 0;
1651 } else {
1652 if (wps_validate_beacon(wps_ie) < 0)
1653 ret = 0;
1654 wpabuf_free(bcn_wps);
1655 }
1656 }
1657 }
1658 #endif /* CONFIG_WPS_STRICT */
1659
1660 wpabuf_free(wps_ie);
1661
1662 return ret;
1663 }
1664
1665
1666 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1667 struct wpa_bss *selected, struct wpa_ssid *ssid)
1668 {
1669 const u8 *sel_uuid, *uuid;
1670 struct wpabuf *wps_ie;
1671 int ret = 0;
1672 struct wpa_bss *bss;
1673
1674 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1675 return 0;
1676
1677 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1678 "present in scan results; selected BSSID " MACSTR,
1679 MAC2STR(selected->bssid));
1680
1681 /* Make sure that only one AP is in active PBC mode */
1682 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1683 if (wps_ie) {
1684 sel_uuid = wps_get_uuid_e(wps_ie);
1685 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1686 sel_uuid, UUID_LEN);
1687 } else {
1688 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1689 "WPS IE?!");
1690 sel_uuid = NULL;
1691 }
1692
1693 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1694 struct wpabuf *ie;
1695 if (bss == selected)
1696 continue;
1697 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1698 if (!ie)
1699 continue;
1700 if (!wps_is_selected_pbc_registrar(ie)) {
1701 wpabuf_free(ie);
1702 continue;
1703 }
1704 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1705 MACSTR, MAC2STR(bss->bssid));
1706 uuid = wps_get_uuid_e(ie);
1707 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1708 uuid, UUID_LEN);
1709 if (os_memcmp(selected->bssid, bss->bssid, ETH_ALEN) == 0) {
1710 wpabuf_free(ie);
1711 continue;
1712 }
1713 if (sel_uuid == NULL || uuid == NULL ||
1714 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1715 ret = 1; /* PBC overlap */
1716 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1717 MACSTR " and " MACSTR,
1718 MAC2STR(selected->bssid),
1719 MAC2STR(bss->bssid));
1720 wpabuf_free(ie);
1721 break;
1722 }
1723
1724 /* TODO: verify that this is reasonable dual-band situation */
1725
1726 wpabuf_free(ie);
1727 }
1728
1729 wpabuf_free(wps_ie);
1730
1731 return ret;
1732 }
1733
1734
1735 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1736 {
1737 struct wpa_bss *bss;
1738 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1739
1740 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1741 return;
1742
1743 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1744 struct wpabuf *ie;
1745 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1746 if (!ie)
1747 continue;
1748 if (wps_is_selected_pbc_registrar(ie))
1749 pbc++;
1750 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1751 auth++;
1752 else if (wps_is_selected_pin_registrar(ie))
1753 pin++;
1754 else
1755 wps++;
1756 wpabuf_free(ie);
1757 }
1758
1759 if (pbc)
1760 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1761 else if (auth)
1762 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1763 else if (pin)
1764 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1765 else if (wps)
1766 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1767 }
1768
1769
1770 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1771 {
1772 struct wpa_ssid *ssid;
1773
1774 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1775 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1776 return 1;
1777 }
1778
1779 return 0;
1780 }
1781
1782
1783 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1784 char *end)
1785 {
1786 struct wpabuf *wps_ie;
1787 int ret;
1788
1789 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1790 if (wps_ie == NULL)
1791 return 0;
1792
1793 ret = wps_attr_text(wps_ie, buf, end);
1794 wpabuf_free(wps_ie);
1795 return ret;
1796 }
1797
1798
1799 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1800 {
1801 #ifdef CONFIG_WPS_ER
1802 if (wpa_s->wps_er) {
1803 wps_er_refresh(wpa_s->wps_er);
1804 return 0;
1805 }
1806 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1807 if (wpa_s->wps_er == NULL)
1808 return -1;
1809 return 0;
1810 #else /* CONFIG_WPS_ER */
1811 return 0;
1812 #endif /* CONFIG_WPS_ER */
1813 }
1814
1815
1816 void wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1817 {
1818 #ifdef CONFIG_WPS_ER
1819 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1820 wpa_s->wps_er = NULL;
1821 #endif /* CONFIG_WPS_ER */
1822 }
1823
1824
1825 #ifdef CONFIG_WPS_ER
1826 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1827 const char *uuid, const char *pin)
1828 {
1829 u8 u[UUID_LEN];
1830 const u8 *use_uuid = NULL;
1831 u8 addr_buf[ETH_ALEN];
1832
1833 if (os_strcmp(uuid, "any") == 0) {
1834 } else if (uuid_str2bin(uuid, u) == 0) {
1835 use_uuid = u;
1836 } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1837 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1838 if (use_uuid == NULL)
1839 return -1;
1840 } else
1841 return -1;
1842 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1843 use_uuid,
1844 (const u8 *) pin, os_strlen(pin), 300);
1845 }
1846
1847
1848 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1849 {
1850 u8 u[UUID_LEN], *use_uuid = NULL;
1851 u8 addr[ETH_ALEN], *use_addr = NULL;
1852
1853 if (uuid_str2bin(uuid, u) == 0)
1854 use_uuid = u;
1855 else if (hwaddr_aton(uuid, addr) == 0)
1856 use_addr = addr;
1857 else
1858 return -1;
1859 return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1860 }
1861
1862
1863 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1864 const char *pin)
1865 {
1866 u8 u[UUID_LEN], *use_uuid = NULL;
1867 u8 addr[ETH_ALEN], *use_addr = NULL;
1868
1869 if (uuid_str2bin(uuid, u) == 0)
1870 use_uuid = u;
1871 else if (hwaddr_aton(uuid, addr) == 0)
1872 use_addr = addr;
1873 else
1874 return -1;
1875
1876 return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1877 os_strlen(pin));
1878 }
1879
1880
1881 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1882 struct wps_credential *cred)
1883 {
1884 os_memset(cred, 0, sizeof(*cred));
1885 if (ssid->ssid_len > 32)
1886 return -1;
1887 os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1888 cred->ssid_len = ssid->ssid_len;
1889 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1890 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1891 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1892 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1893 cred->encr_type = WPS_ENCR_AES;
1894 else
1895 cred->encr_type = WPS_ENCR_TKIP;
1896 if (ssid->passphrase) {
1897 cred->key_len = os_strlen(ssid->passphrase);
1898 if (cred->key_len >= 64)
1899 return -1;
1900 os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1901 } else if (ssid->psk_set) {
1902 cred->key_len = 32;
1903 os_memcpy(cred->key, ssid->psk, 32);
1904 } else
1905 return -1;
1906 } else {
1907 cred->auth_type = WPS_AUTH_OPEN;
1908 cred->encr_type = WPS_ENCR_NONE;
1909 }
1910
1911 return 0;
1912 }
1913
1914
1915 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1916 int id)
1917 {
1918 u8 u[UUID_LEN], *use_uuid = NULL;
1919 u8 addr[ETH_ALEN], *use_addr = NULL;
1920 struct wpa_ssid *ssid;
1921 struct wps_credential cred;
1922
1923 if (uuid_str2bin(uuid, u) == 0)
1924 use_uuid = u;
1925 else if (hwaddr_aton(uuid, addr) == 0)
1926 use_addr = addr;
1927 else
1928 return -1;
1929 ssid = wpa_config_get_network(wpa_s->conf, id);
1930 if (ssid == NULL || ssid->ssid == NULL)
1931 return -1;
1932
1933 if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1934 return -1;
1935 return wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1936 }
1937
1938
1939 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1940 const char *pin, struct wps_new_ap_settings *settings)
1941 {
1942 u8 u[UUID_LEN], *use_uuid = NULL;
1943 u8 addr[ETH_ALEN], *use_addr = NULL;
1944 struct wps_credential cred;
1945 size_t len;
1946
1947 if (uuid_str2bin(uuid, u) == 0)
1948 use_uuid = u;
1949 else if (hwaddr_aton(uuid, addr) == 0)
1950 use_addr = addr;
1951 else
1952 return -1;
1953 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1954 settings->encr == NULL || settings->key_hex == NULL)
1955 return -1;
1956
1957 os_memset(&cred, 0, sizeof(cred));
1958 len = os_strlen(settings->ssid_hex);
1959 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1960 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1961 return -1;
1962 cred.ssid_len = len / 2;
1963
1964 len = os_strlen(settings->key_hex);
1965 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1966 hexstr2bin(settings->key_hex, cred.key, len / 2))
1967 return -1;
1968 cred.key_len = len / 2;
1969
1970 if (os_strcmp(settings->auth, "OPEN") == 0)
1971 cred.auth_type = WPS_AUTH_OPEN;
1972 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1973 cred.auth_type = WPS_AUTH_WPAPSK;
1974 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1975 cred.auth_type = WPS_AUTH_WPA2PSK;
1976 else
1977 return -1;
1978
1979 if (os_strcmp(settings->encr, "NONE") == 0)
1980 cred.encr_type = WPS_ENCR_NONE;
1981 #ifdef CONFIG_TESTING_OPTIONS
1982 else if (os_strcmp(settings->encr, "WEP") == 0)
1983 cred.encr_type = WPS_ENCR_WEP;
1984 #endif /* CONFIG_TESTING_OPTIONS */
1985 else if (os_strcmp(settings->encr, "TKIP") == 0)
1986 cred.encr_type = WPS_ENCR_TKIP;
1987 else if (os_strcmp(settings->encr, "CCMP") == 0)
1988 cred.encr_type = WPS_ENCR_AES;
1989 else
1990 return -1;
1991
1992 return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
1993 (const u8 *) pin, os_strlen(pin), &cred);
1994 }
1995
1996
1997 #ifdef CONFIG_WPS_NFC
1998 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1999 int ndef, const char *uuid)
2000 {
2001 struct wpabuf *ret;
2002 u8 u[UUID_LEN], *use_uuid = NULL;
2003 u8 addr[ETH_ALEN], *use_addr = NULL;
2004
2005 if (!wpa_s->wps_er)
2006 return NULL;
2007
2008 if (uuid_str2bin(uuid, u) == 0)
2009 use_uuid = u;
2010 else if (hwaddr_aton(uuid, addr) == 0)
2011 use_addr = addr;
2012 else
2013 return NULL;
2014
2015 ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2016 if (ndef && ret) {
2017 struct wpabuf *tmp;
2018 tmp = ndef_build_wifi(ret);
2019 wpabuf_free(ret);
2020 if (tmp == NULL)
2021 return NULL;
2022 ret = tmp;
2023 }
2024
2025 return ret;
2026 }
2027 #endif /* CONFIG_WPS_NFC */
2028
2029
2030 static int callbacks_pending = 0;
2031
2032 static void wpas_wps_terminate_cb(void *ctx)
2033 {
2034 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
2035 if (--callbacks_pending <= 0)
2036 eloop_terminate();
2037 }
2038 #endif /* CONFIG_WPS_ER */
2039
2040
2041 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
2042 {
2043 #ifdef CONFIG_WPS_ER
2044 if (wpa_s->wps_er) {
2045 callbacks_pending++;
2046 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
2047 wpa_s->wps_er = NULL;
2048 return 1;
2049 }
2050 #endif /* CONFIG_WPS_ER */
2051 return 0;
2052 }
2053
2054
2055 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
2056 {
2057 struct wps_context *wps = wpa_s->wps;
2058
2059 if (wps == NULL)
2060 return;
2061
2062 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
2063 wps->config_methods = wps_config_methods_str2bin(
2064 wpa_s->conf->config_methods);
2065 if ((wps->config_methods &
2066 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
2067 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
2068 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
2069 "config methods are not allowed at the "
2070 "same time");
2071 wps->config_methods &= ~WPS_CONFIG_LABEL;
2072 }
2073 }
2074 wps->config_methods = wps_fix_config_methods(wps->config_methods);
2075 wps->dev.config_methods = wps->config_methods;
2076
2077 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
2078 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2079 WPS_DEV_TYPE_LEN);
2080
2081 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2082 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2083 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2084 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2085 }
2086
2087 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2088 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2089
2090 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2091 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2092
2093 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2094 wpas_wps_set_uuid(wpa_s, wps);
2095
2096 if (wpa_s->conf->changed_parameters &
2097 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2098 /* Update pointers to make sure they refer current values */
2099 wps->dev.device_name = wpa_s->conf->device_name;
2100 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2101 wps->dev.model_name = wpa_s->conf->model_name;
2102 wps->dev.model_number = wpa_s->conf->model_number;
2103 wps->dev.serial_number = wpa_s->conf->serial_number;
2104 }
2105 }
2106
2107
2108 #ifdef CONFIG_WPS_NFC
2109
2110 #ifdef CONFIG_WPS_ER
2111 static struct wpabuf *
2112 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2113 struct wpa_ssid *ssid)
2114 {
2115 struct wpabuf *ret;
2116 struct wps_credential cred;
2117
2118 if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2119 return NULL;
2120
2121 ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2122
2123 if (ndef && ret) {
2124 struct wpabuf *tmp;
2125 tmp = ndef_build_wifi(ret);
2126 wpabuf_free(ret);
2127 if (tmp == NULL)
2128 return NULL;
2129 ret = tmp;
2130 }
2131
2132 return ret;
2133 }
2134 #endif /* CONFIG_WPS_ER */
2135
2136
2137 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2138 int ndef, const char *id_str)
2139 {
2140 #ifdef CONFIG_WPS_ER
2141 if (id_str) {
2142 int id;
2143 char *end = NULL;
2144 struct wpa_ssid *ssid;
2145
2146 id = strtol(id_str, &end, 10);
2147 if (end && *end)
2148 return NULL;
2149
2150 ssid = wpa_config_get_network(wpa_s->conf, id);
2151 if (ssid == NULL)
2152 return NULL;
2153 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2154 }
2155 #endif /* CONFIG_WPS_ER */
2156 #ifdef CONFIG_AP
2157 if (wpa_s->ap_iface)
2158 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2159 #endif /* CONFIG_AP */
2160 return NULL;
2161 }
2162
2163
2164 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2165 {
2166 if (wpa_s->conf->wps_nfc_pw_from_config) {
2167 return wps_nfc_token_build(ndef,
2168 wpa_s->conf->wps_nfc_dev_pw_id,
2169 wpa_s->conf->wps_nfc_dh_pubkey,
2170 wpa_s->conf->wps_nfc_dev_pw);
2171 }
2172
2173 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2174 &wpa_s->conf->wps_nfc_dh_pubkey,
2175 &wpa_s->conf->wps_nfc_dh_privkey,
2176 &wpa_s->conf->wps_nfc_dev_pw);
2177 }
2178
2179
2180 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr,
2181 const u8 *bssid,
2182 const struct wpabuf *dev_pw, u16 dev_pw_id,
2183 int p2p_group, const u8 *peer_pubkey_hash,
2184 const u8 *ssid, size_t ssid_len, int freq)
2185 {
2186 struct wps_context *wps = wpa_s->wps;
2187 char pw[32 * 2 + 1];
2188
2189 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2190 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2191 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2192 }
2193
2194 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2195 wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2196 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2197 "cannot start NFC-triggered connection");
2198 return -1;
2199 }
2200
2201 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2202 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2203 "cannot start NFC-triggered connection", dev_pw_id);
2204 return -1;
2205 }
2206
2207 dh5_free(wps->dh_ctx);
2208 wpabuf_free(wps->dh_pubkey);
2209 wpabuf_free(wps->dh_privkey);
2210 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2211 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2212 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2213 wps->dh_ctx = NULL;
2214 wpabuf_free(wps->dh_pubkey);
2215 wps->dh_pubkey = NULL;
2216 wpabuf_free(wps->dh_privkey);
2217 wps->dh_privkey = NULL;
2218 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2219 return -1;
2220 }
2221 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2222 if (wps->dh_ctx == NULL) {
2223 wpabuf_free(wps->dh_pubkey);
2224 wps->dh_pubkey = NULL;
2225 wpabuf_free(wps->dh_privkey);
2226 wps->dh_privkey = NULL;
2227 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2228 return -1;
2229 }
2230
2231 if (dev_pw) {
2232 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2233 wpabuf_head(dev_pw),
2234 wpabuf_len(dev_pw));
2235 }
2236 return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid,
2237 dev_pw ? pw : NULL,
2238 p2p_group, dev_pw_id, peer_pubkey_hash,
2239 ssid, ssid_len, freq);
2240 }
2241
2242
2243 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2244 struct wps_parse_attr *attr)
2245 {
2246 /*
2247 * Disable existing networks temporarily to allow the newly learned
2248 * credential to be preferred. Enable the temporarily disabled networks
2249 * after 10 seconds.
2250 */
2251 wpas_wps_temp_disable(wpa_s, NULL);
2252 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2253 NULL);
2254
2255 if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2256 return -1;
2257
2258 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2259 return 0;
2260
2261 if (attr->ap_channel) {
2262 u16 chan = WPA_GET_BE16(attr->ap_channel);
2263 int freq = 0;
2264
2265 if (chan >= 1 && chan <= 13)
2266 freq = 2407 + 5 * chan;
2267 else if (chan == 14)
2268 freq = 2484;
2269 else if (chan >= 30)
2270 freq = 5000 + 5 * chan;
2271
2272 if (freq) {
2273 wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz",
2274 chan, freq);
2275 wpa_s->after_wps = 5;
2276 wpa_s->wps_freq = freq;
2277 }
2278 }
2279
2280 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2281 "based on the received credential added");
2282 wpa_s->normal_scans = 0;
2283 wpa_supplicant_reinit_autoscan(wpa_s);
2284 wpa_s->disconnected = 0;
2285 wpa_s->reassociate = 1;
2286
2287 wpa_supplicant_cancel_sched_scan(wpa_s);
2288 wpa_supplicant_req_scan(wpa_s, 0, 0);
2289
2290 return 0;
2291 }
2292
2293
2294 #ifdef CONFIG_WPS_ER
2295 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2296 struct wps_parse_attr *attr)
2297 {
2298 return wps_registrar_add_nfc_password_token(
2299 wpa_s->wps->registrar, attr->oob_dev_password,
2300 attr->oob_dev_password_len);
2301 }
2302 #endif /* CONFIG_WPS_ER */
2303
2304
2305 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2306 const struct wpabuf *wps)
2307 {
2308 struct wps_parse_attr attr;
2309
2310 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2311
2312 if (wps_parse_msg(wps, &attr)) {
2313 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2314 return -1;
2315 }
2316
2317 if (attr.num_cred)
2318 return wpas_wps_use_cred(wpa_s, &attr);
2319
2320 #ifdef CONFIG_WPS_ER
2321 if (attr.oob_dev_password)
2322 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2323 #endif /* CONFIG_WPS_ER */
2324
2325 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2326 return -1;
2327 }
2328
2329
2330 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2331 const struct wpabuf *data, int forced_freq)
2332 {
2333 const struct wpabuf *wps = data;
2334 struct wpabuf *tmp = NULL;
2335 int ret;
2336
2337 if (wpabuf_len(data) < 4)
2338 return -1;
2339
2340 if (*wpabuf_head_u8(data) != 0x10) {
2341 /* Assume this contains full NDEF record */
2342 tmp = ndef_parse_wifi(data);
2343 if (tmp == NULL) {
2344 #ifdef CONFIG_P2P
2345 tmp = ndef_parse_p2p(data);
2346 if (tmp) {
2347 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp,
2348 forced_freq);
2349 wpabuf_free(tmp);
2350 return ret;
2351 }
2352 #endif /* CONFIG_P2P */
2353 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2354 return -1;
2355 }
2356 wps = tmp;
2357 }
2358
2359 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2360 wpabuf_free(tmp);
2361 return ret;
2362 }
2363
2364
2365 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2366 int ndef)
2367 {
2368 struct wpabuf *ret;
2369
2370 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2371 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2372 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2373 return NULL;
2374
2375 ret = wps_build_nfc_handover_req(wpa_s->wps,
2376 wpa_s->conf->wps_nfc_dh_pubkey);
2377
2378 if (ndef && ret) {
2379 struct wpabuf *tmp;
2380 tmp = ndef_build_wifi(ret);
2381 wpabuf_free(ret);
2382 if (tmp == NULL)
2383 return NULL;
2384 ret = tmp;
2385 }
2386
2387 return ret;
2388 }
2389
2390
2391 #ifdef CONFIG_WPS_NFC
2392
2393 static struct wpabuf *
2394 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2395 const char *uuid)
2396 {
2397 #ifdef CONFIG_WPS_ER
2398 struct wpabuf *ret;
2399 u8 u[UUID_LEN], *use_uuid = NULL;
2400 u8 addr[ETH_ALEN], *use_addr = NULL;
2401 struct wps_context *wps = wpa_s->wps;
2402
2403 if (wps == NULL)
2404 return NULL;
2405
2406 if (uuid == NULL)
2407 return NULL;
2408 if (uuid_str2bin(uuid, u) == 0)
2409 use_uuid = u;
2410 else if (hwaddr_aton(uuid, addr) == 0)
2411 use_addr = addr;
2412 else
2413 return NULL;
2414
2415 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2416 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2417 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2418 return NULL;
2419 }
2420
2421 wpas_wps_nfc_clear(wps);
2422 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2423 wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2424 wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2425 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2426 wpas_wps_nfc_clear(wps);
2427 return NULL;
2428 }
2429
2430 ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2431 use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2432 if (ndef && ret) {
2433 struct wpabuf *tmp;
2434 tmp = ndef_build_wifi(ret);
2435 wpabuf_free(ret);
2436 if (tmp == NULL)
2437 return NULL;
2438 ret = tmp;
2439 }
2440
2441 return ret;
2442 #else /* CONFIG_WPS_ER */
2443 return NULL;
2444 #endif /* CONFIG_WPS_ER */
2445 }
2446 #endif /* CONFIG_WPS_NFC */
2447
2448
2449 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2450 int ndef, int cr, const char *uuid)
2451 {
2452 struct wpabuf *ret;
2453 if (!cr)
2454 return NULL;
2455 ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2456 if (ret)
2457 return ret;
2458 return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2459 }
2460
2461
2462 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2463 const struct wpabuf *data)
2464 {
2465 struct wpabuf *wps;
2466 int ret = -1;
2467 u16 wsc_len;
2468 const u8 *pos;
2469 struct wpabuf msg;
2470 struct wps_parse_attr attr;
2471 u16 dev_pw_id;
2472 const u8 *bssid = NULL;
2473 int freq = 0;
2474
2475 wps = ndef_parse_wifi(data);
2476 if (wps == NULL)
2477 return -1;
2478 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2479 "payload from NFC connection handover");
2480 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2481 if (wpabuf_len(wps) < 2) {
2482 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2483 "Message");
2484 goto out;
2485 }
2486 pos = wpabuf_head(wps);
2487 wsc_len = WPA_GET_BE16(pos);
2488 if (wsc_len > wpabuf_len(wps) - 2) {
2489 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2490 "in Wi-Fi Handover Select Message", wsc_len);
2491 goto out;
2492 }
2493 pos += 2;
2494
2495 wpa_hexdump(MSG_DEBUG,
2496 "WPS: WSC attributes in Wi-Fi Handover Select Message",
2497 pos, wsc_len);
2498 if (wsc_len < wpabuf_len(wps) - 2) {
2499 wpa_hexdump(MSG_DEBUG,
2500 "WPS: Ignore extra data after WSC attributes",
2501 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2502 }
2503
2504 wpabuf_set(&msg, pos, wsc_len);
2505 ret = wps_parse_msg(&msg, &attr);
2506 if (ret < 0) {
2507 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2508 "Wi-Fi Handover Select Message");
2509 goto out;
2510 }
2511
2512 if (attr.oob_dev_password == NULL ||
2513 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2514 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2515 "included in Wi-Fi Handover Select Message");
2516 ret = -1;
2517 goto out;
2518 }
2519
2520 if (attr.ssid == NULL) {
2521 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2522 "Select Message");
2523 ret = -1;
2524 goto out;
2525 }
2526
2527 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2528
2529 if (attr.mac_addr) {
2530 bssid = attr.mac_addr;
2531 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR,
2532 MAC2STR(bssid));
2533 }
2534
2535 if (attr.rf_bands)
2536 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
2537
2538 if (attr.ap_channel) {
2539 u16 chan = WPA_GET_BE16(attr.ap_channel);
2540
2541 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);
2542
2543 if (chan >= 1 && chan <= 13 &&
2544 (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ))
2545 freq = 2407 + 5 * chan;
2546 else if (chan == 14 &&
2547 (attr.rf_bands == NULL ||
2548 *attr.rf_bands & WPS_RF_24GHZ))
2549 freq = 2484;
2550 else if (chan >= 30 &&
2551 (attr.rf_bands == NULL ||
2552 *attr.rf_bands & WPS_RF_50GHZ))
2553 freq = 5000 + 5 * chan;
2554
2555 if (freq) {
2556 wpa_printf(MSG_DEBUG,
2557 "WPS: AP indicated channel %u -> %u MHz",
2558 chan, freq);
2559 }
2560 }
2561
2562 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2563 attr.oob_dev_password, attr.oob_dev_password_len);
2564 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2565 WPS_OOB_PUBKEY_HASH_LEN);
2566 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2567 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2568 "%u in Wi-Fi Handover Select Message", dev_pw_id);
2569 ret = -1;
2570 goto out;
2571 }
2572 wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2573 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2574
2575 ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0,
2576 attr.oob_dev_password,
2577 attr.ssid, attr.ssid_len, freq);
2578
2579 out:
2580 wpabuf_free(wps);
2581 return ret;
2582 }
2583
2584
2585 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2586 const struct wpabuf *req,
2587 const struct wpabuf *sel)
2588 {
2589 wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2590 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2591 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2592 return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2593 }
2594
2595
2596 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2597 const struct wpabuf *req,
2598 const struct wpabuf *sel)
2599 {
2600 struct wpabuf *wps;
2601 int ret = -1;
2602 u16 wsc_len;
2603 const u8 *pos;
2604 struct wpabuf msg;
2605 struct wps_parse_attr attr;
2606 u16 dev_pw_id;
2607
2608 /*
2609 * Enrollee/station is always initiator of the NFC connection handover,
2610 * so use the request message here to find Enrollee public key hash.
2611 */
2612 wps = ndef_parse_wifi(req);
2613 if (wps == NULL)
2614 return -1;
2615 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2616 "payload from NFC connection handover");
2617 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2618 if (wpabuf_len(wps) < 2) {
2619 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2620 "Message");
2621 goto out;
2622 }
2623 pos = wpabuf_head(wps);
2624 wsc_len = WPA_GET_BE16(pos);
2625 if (wsc_len > wpabuf_len(wps) - 2) {
2626 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2627 "in rt Wi-Fi Handover Request Message", wsc_len);
2628 goto out;
2629 }
2630 pos += 2;
2631
2632 wpa_hexdump(MSG_DEBUG,
2633 "WPS: WSC attributes in Wi-Fi Handover Request Message",
2634 pos, wsc_len);
2635 if (wsc_len < wpabuf_len(wps) - 2) {
2636 wpa_hexdump(MSG_DEBUG,
2637 "WPS: Ignore extra data after WSC attributes",
2638 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2639 }
2640
2641 wpabuf_set(&msg, pos, wsc_len);
2642 ret = wps_parse_msg(&msg, &attr);
2643 if (ret < 0) {
2644 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2645 "Wi-Fi Handover Request Message");
2646 goto out;
2647 }
2648
2649 if (attr.oob_dev_password == NULL ||
2650 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2651 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2652 "included in Wi-Fi Handover Request Message");
2653 ret = -1;
2654 goto out;
2655 }
2656
2657 if (attr.uuid_e == NULL) {
2658 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2659 "Handover Request Message");
2660 ret = -1;
2661 goto out;
2662 }
2663
2664 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2665
2666 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2667 attr.oob_dev_password, attr.oob_dev_password_len);
2668 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2669 WPS_OOB_PUBKEY_HASH_LEN);
2670 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2671 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2672 "%u in Wi-Fi Handover Request Message", dev_pw_id);
2673 ret = -1;
2674 goto out;
2675 }
2676 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2677 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2678
2679 ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2680 attr.oob_dev_password,
2681 DEV_PW_NFC_CONNECTION_HANDOVER,
2682 NULL, 0, 1);
2683
2684 out:
2685 wpabuf_free(wps);
2686 return ret;
2687 }
2688
2689 #endif /* CONFIG_WPS_NFC */
2690
2691
2692 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2693 {
2694 size_t i;
2695 struct os_reltime now;
2696
2697 if (wpa_debug_level > MSG_DEBUG)
2698 return;
2699
2700 if (wpa_s->wps_ap == NULL)
2701 return;
2702
2703 os_get_reltime(&now);
2704
2705 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2706 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2707 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2708
2709 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2710 "tries=%d last_attempt=%d sec ago blacklist=%d",
2711 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2712 ap->last_attempt.sec > 0 ?
2713 (int) now.sec - (int) ap->last_attempt.sec : -1,
2714 e ? e->count : 0);
2715 }
2716 }
2717
2718
2719 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2720 const u8 *bssid)
2721 {
2722 size_t i;
2723
2724 if (wpa_s->wps_ap == NULL)
2725 return NULL;
2726
2727 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2728 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2729 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2730 return ap;
2731 }
2732
2733 return NULL;
2734 }
2735
2736
2737 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2738 struct wpa_scan_res *res)
2739 {
2740 struct wpabuf *wps;
2741 enum wps_ap_info_type type;
2742 struct wps_ap_info *ap;
2743 int r;
2744
2745 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2746 return;
2747
2748 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2749 if (wps == NULL)
2750 return;
2751
2752 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2753 if (r == 2)
2754 type = WPS_AP_SEL_REG_OUR;
2755 else if (r == 1)
2756 type = WPS_AP_SEL_REG;
2757 else
2758 type = WPS_AP_NOT_SEL_REG;
2759
2760 wpabuf_free(wps);
2761
2762 ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2763 if (ap) {
2764 if (ap->type != type) {
2765 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2766 " changed type %d -> %d",
2767 MAC2STR(res->bssid), ap->type, type);
2768 ap->type = type;
2769 if (type != WPS_AP_NOT_SEL_REG)
2770 wpa_blacklist_del(wpa_s, ap->bssid);
2771 }
2772 return;
2773 }
2774
2775 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2776 sizeof(struct wps_ap_info));
2777 if (ap == NULL)
2778 return;
2779
2780 wpa_s->wps_ap = ap;
2781 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2782 wpa_s->num_wps_ap++;
2783
2784 os_memset(ap, 0, sizeof(*ap));
2785 os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2786 ap->type = type;
2787 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2788 MAC2STR(ap->bssid), ap->type);
2789 }
2790
2791
2792 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2793 struct wpa_scan_results *scan_res)
2794 {
2795 size_t i;
2796
2797 for (i = 0; i < scan_res->num; i++)
2798 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2799
2800 wpas_wps_dump_ap_info(wpa_s);
2801 }
2802
2803
2804 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2805 {
2806 struct wps_ap_info *ap;
2807
2808 wpa_s->after_wps = 0;
2809
2810 if (!wpa_s->wps_ap_iter)
2811 return;
2812 ap = wpas_wps_get_ap_info(wpa_s, bssid);
2813 if (ap == NULL)
2814 return;
2815 ap->tries++;
2816 os_get_reltime(&ap->last_attempt);
2817 }
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