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 /*
43 * The minimum time in seconds before trying to associate to a WPS PIN AP that
44 * does not have Selected Registrar TRUE.
45 */
46 #ifndef WPS_PIN_TIME_IGNORE_SEL_REG
47 #define WPS_PIN_TIME_IGNORE_SEL_REG 5
48 #endif /* WPS_PIN_TIME_IGNORE_SEL_REG */
49
50 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
51 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
52
53
wpas_wps_clear_ap_info(struct wpa_supplicant * wpa_s)54 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
55 {
56 os_free(wpa_s->wps_ap);
57 wpa_s->wps_ap = NULL;
58 wpa_s->num_wps_ap = 0;
59 wpa_s->wps_ap_iter = 0;
60 }
61
62
wpas_wps_assoc_with_cred(void * eloop_ctx,void * timeout_ctx)63 static void wpas_wps_assoc_with_cred(void *eloop_ctx, void *timeout_ctx)
64 {
65 struct wpa_supplicant *wpa_s = eloop_ctx;
66 int use_fast_assoc = timeout_ctx != NULL;
67
68 wpa_printf(MSG_DEBUG, "WPS: Continuing association after eapol_cb");
69 if (!use_fast_assoc ||
70 wpa_supplicant_fast_associate(wpa_s) != 1)
71 wpa_supplicant_req_scan(wpa_s, 0, 0);
72 }
73
74
wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant * wpa_s)75 static void wpas_wps_assoc_with_cred_cancel(struct wpa_supplicant *wpa_s)
76 {
77 eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 0);
78 eloop_cancel_timeout(wpas_wps_assoc_with_cred, wpa_s, (void *) 1);
79 }
80
81
wpas_wps_eapol_cb(struct wpa_supplicant * wpa_s)82 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
83 {
84 if (wpas_p2p_wps_eapol_cb(wpa_s) > 0)
85 return 1;
86
87 if (!wpa_s->wps_success &&
88 wpa_s->current_ssid &&
89 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
90 const u8 *bssid = wpa_s->bssid;
91 if (is_zero_ether_addr(bssid))
92 bssid = wpa_s->pending_bssid;
93
94 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
95 " did not succeed - continue trying to find "
96 "suitable AP", MAC2STR(bssid));
97 wpa_blacklist_add(wpa_s, bssid);
98
99 wpa_supplicant_deauthenticate(wpa_s,
100 WLAN_REASON_DEAUTH_LEAVING);
101 wpa_s->reassociate = 1;
102 wpa_supplicant_req_scan(wpa_s,
103 wpa_s->blacklist_cleared ? 5 : 0, 0);
104 wpa_s->blacklist_cleared = 0;
105 return 1;
106 }
107
108 wpas_wps_clear_ap_info(wpa_s);
109 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
110 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
111 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
112
113 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
114 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
115 int disabled = wpa_s->current_ssid->disabled;
116 unsigned int freq = wpa_s->assoc_freq;
117 struct wpa_bss *bss;
118 struct wpa_ssid *ssid = NULL;
119 int use_fast_assoc = 0;
120
121 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
122 "try to associate with the received credential "
123 "(freq=%u)", freq);
124 wpa_s->own_disconnect_req = 1;
125 wpa_supplicant_deauthenticate(wpa_s,
126 WLAN_REASON_DEAUTH_LEAVING);
127 if (disabled) {
128 wpa_printf(MSG_DEBUG, "WPS: Current network is "
129 "disabled - wait for user to enable");
130 return 1;
131 }
132 wpa_s->after_wps = 5;
133 wpa_s->wps_freq = freq;
134 wpa_s->normal_scans = 0;
135 wpa_s->reassociate = 1;
136
137 wpa_printf(MSG_DEBUG, "WPS: Checking whether fast association "
138 "without a new scan can be used");
139 bss = wpa_supplicant_pick_network(wpa_s, &ssid);
140 if (bss) {
141 struct wpabuf *wps;
142 struct wps_parse_attr attr;
143
144 wps = wpa_bss_get_vendor_ie_multi(bss,
145 WPS_IE_VENDOR_TYPE);
146 if (wps && wps_parse_msg(wps, &attr) == 0 &&
147 attr.wps_state &&
148 *attr.wps_state == WPS_STATE_CONFIGURED)
149 use_fast_assoc = 1;
150 wpabuf_free(wps);
151 }
152
153 /*
154 * Complete the next step from an eloop timeout to allow pending
155 * driver events related to the disconnection to be processed
156 * first. This makes it less likely for disconnection event to
157 * cause problems with the following connection.
158 */
159 wpa_printf(MSG_DEBUG, "WPS: Continue association from timeout");
160 wpas_wps_assoc_with_cred_cancel(wpa_s);
161 eloop_register_timeout(0, 10000,
162 wpas_wps_assoc_with_cred, wpa_s,
163 use_fast_assoc ? (void *) 1 :
164 (void *) 0);
165 return 1;
166 }
167
168 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
169 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
170 "for external credential processing");
171 wpas_clear_wps(wpa_s);
172 wpa_s->own_disconnect_req = 1;
173 wpa_supplicant_deauthenticate(wpa_s,
174 WLAN_REASON_DEAUTH_LEAVING);
175 return 1;
176 }
177
178 return 0;
179 }
180
181
wpas_wps_security_workaround(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const struct wps_credential * cred)182 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
183 struct wpa_ssid *ssid,
184 const struct wps_credential *cred)
185 {
186 struct wpa_driver_capa capa;
187 struct wpa_bss *bss;
188 const u8 *ie;
189 struct wpa_ie_data adv;
190 int wpa2 = 0, ccmp = 0;
191
192 /*
193 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
194 * case they are configured for mixed mode operation (WPA+WPA2 and
195 * TKIP+CCMP). Try to use scan results to figure out whether the AP
196 * actually supports stronger security and select that if the client
197 * has support for it, too.
198 */
199
200 if (wpa_drv_get_capa(wpa_s, &capa))
201 return; /* Unknown what driver supports */
202
203 if (ssid->ssid == NULL)
204 return;
205 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
206 if (bss == NULL) {
207 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
208 "table - use credential as-is");
209 return;
210 }
211
212 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
213
214 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
215 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
216 wpa2 = 1;
217 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
218 ccmp = 1;
219 } else {
220 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
221 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
222 adv.pairwise_cipher & WPA_CIPHER_CCMP)
223 ccmp = 1;
224 }
225
226 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
227 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
228 /*
229 * TODO: This could be the initial AP configuration and the
230 * Beacon contents could change shortly. Should request a new
231 * scan and delay addition of the network until the updated
232 * scan results are available.
233 */
234 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
235 "support - use credential as-is");
236 return;
237 }
238
239 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
240 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
241 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
242 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
243 "based on scan results");
244 if (wpa_s->conf->ap_scan == 1)
245 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
246 else
247 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
248 }
249
250 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
251 (ssid->proto & WPA_PROTO_WPA) &&
252 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
253 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
254 "based on scan results");
255 if (wpa_s->conf->ap_scan == 1)
256 ssid->proto |= WPA_PROTO_RSN;
257 else
258 ssid->proto = WPA_PROTO_RSN;
259 }
260 }
261
262
wpas_wps_remove_dup_network(struct wpa_supplicant * wpa_s,struct wpa_ssid * new_ssid)263 static void wpas_wps_remove_dup_network(struct wpa_supplicant *wpa_s,
264 struct wpa_ssid *new_ssid)
265 {
266 struct wpa_ssid *ssid, *next;
267
268 for (ssid = wpa_s->conf->ssid, next = ssid ? ssid->next : NULL; ssid;
269 ssid = next, next = ssid ? ssid->next : NULL) {
270 /*
271 * new_ssid has already been added to the list in
272 * wpas_wps_add_network(), so skip it.
273 */
274 if (ssid == new_ssid)
275 continue;
276
277 if (ssid->bssid_set || new_ssid->bssid_set) {
278 if (ssid->bssid_set != new_ssid->bssid_set)
279 continue;
280 if (os_memcmp(ssid->bssid, new_ssid->bssid, ETH_ALEN) !=
281 0)
282 continue;
283 }
284
285 /* compare SSID */
286 if (ssid->ssid_len == 0 || ssid->ssid_len != new_ssid->ssid_len)
287 continue;
288
289 if (ssid->ssid && new_ssid->ssid) {
290 if (os_memcmp(ssid->ssid, new_ssid->ssid,
291 ssid->ssid_len) != 0)
292 continue;
293 } else if (ssid->ssid || new_ssid->ssid)
294 continue;
295
296 /* compare security parameters */
297 if (ssid->auth_alg != new_ssid->auth_alg ||
298 ssid->key_mgmt != new_ssid->key_mgmt ||
299 (ssid->group_cipher != new_ssid->group_cipher &&
300 !(ssid->group_cipher & new_ssid->group_cipher &
301 WPA_CIPHER_CCMP)))
302 continue;
303
304 /*
305 * Some existing WPS APs will send two creds in case they are
306 * configured for mixed mode operation (WPA+WPA2 and TKIP+CCMP).
307 * Try to merge these two creds if they are received in the same
308 * M8 message.
309 */
310 if (ssid->wps_run && ssid->wps_run == new_ssid->wps_run &&
311 wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
312 if (new_ssid->passphrase && ssid->passphrase &&
313 os_strcmp(new_ssid->passphrase, ssid->passphrase) !=
314 0) {
315 wpa_printf(MSG_DEBUG,
316 "WPS: M8 Creds with different passphrase - do not merge");
317 continue;
318 }
319
320 if (new_ssid->psk_set &&
321 (!ssid->psk_set ||
322 os_memcmp(new_ssid->psk, ssid->psk, 32) != 0)) {
323 wpa_printf(MSG_DEBUG,
324 "WPS: M8 Creds with different PSK - do not merge");
325 continue;
326 }
327
328 if ((new_ssid->passphrase && !ssid->passphrase) ||
329 (!new_ssid->passphrase && ssid->passphrase)) {
330 wpa_printf(MSG_DEBUG,
331 "WPS: M8 Creds with different passphrase/PSK type - do not merge");
332 continue;
333 }
334
335 wpa_printf(MSG_DEBUG,
336 "WPS: Workaround - merge likely WPA/WPA2-mixed mode creds in same M8 message");
337 new_ssid->proto |= ssid->proto;
338 new_ssid->pairwise_cipher |= ssid->pairwise_cipher;
339 } else {
340 /*
341 * proto and pairwise_cipher difference matter for
342 * non-mixed-mode creds.
343 */
344 if (ssid->proto != new_ssid->proto ||
345 ssid->pairwise_cipher != new_ssid->pairwise_cipher)
346 continue;
347 }
348
349 /* Remove the duplicated older network entry. */
350 wpa_printf(MSG_DEBUG, "Remove duplicate network %d", ssid->id);
351 wpas_notify_network_removed(wpa_s, ssid);
352 if (wpa_s->current_ssid == ssid)
353 wpa_s->current_ssid = NULL;
354 wpa_config_remove_network(wpa_s->conf, ssid->id);
355 }
356 }
357
358
wpa_supplicant_wps_cred(void * ctx,const struct wps_credential * cred)359 static int wpa_supplicant_wps_cred(void *ctx,
360 const struct wps_credential *cred)
361 {
362 struct wpa_supplicant *wpa_s = ctx;
363 struct wpa_ssid *ssid = wpa_s->current_ssid;
364 u16 auth_type;
365 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
366 int registrar = 0;
367 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
368
369 if ((wpa_s->conf->wps_cred_processing == 1 ||
370 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
371 size_t blen = cred->cred_attr_len * 2 + 1;
372 char *buf = os_malloc(blen);
373 if (buf) {
374 wpa_snprintf_hex(buf, blen,
375 cred->cred_attr, cred->cred_attr_len);
376 wpa_msg(wpa_s, MSG_INFO, "%s%s",
377 WPS_EVENT_CRED_RECEIVED, buf);
378 os_free(buf);
379 }
380
381 wpas_notify_wps_credential(wpa_s, cred);
382 } else
383 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
384
385 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
386 cred->cred_attr, cred->cred_attr_len);
387
388 if (wpa_s->conf->wps_cred_processing == 1)
389 return 0;
390
391 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
392 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
393 cred->auth_type);
394 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
395 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
396 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
397 cred->key, cred->key_len);
398 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
399 MAC2STR(cred->mac_addr));
400
401 auth_type = cred->auth_type;
402 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
403 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
404 "auth_type into WPA2PSK");
405 auth_type = WPS_AUTH_WPA2PSK;
406 }
407
408 if (auth_type != WPS_AUTH_OPEN &&
409 auth_type != WPS_AUTH_WPAPSK &&
410 auth_type != WPS_AUTH_WPA2PSK) {
411 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
412 "unsupported authentication type 0x%x",
413 auth_type);
414 return 0;
415 }
416
417 if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
418 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
419 wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
420 "invalid Network Key length %lu",
421 (unsigned long) cred->key_len);
422 return -1;
423 }
424 }
425
426 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
427 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
428 "on the received credential");
429 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
430 if (ssid->eap.identity &&
431 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
432 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
433 WSC_ID_REGISTRAR_LEN) == 0)
434 registrar = 1;
435 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
436 os_free(ssid->eap.identity);
437 ssid->eap.identity = NULL;
438 ssid->eap.identity_len = 0;
439 os_free(ssid->eap.phase1);
440 ssid->eap.phase1 = NULL;
441 os_free(ssid->eap.eap_methods);
442 ssid->eap.eap_methods = NULL;
443 if (!ssid->p2p_group) {
444 ssid->temporary = 0;
445 ssid->bssid_set = 0;
446 }
447 ssid->disabled_until.sec = 0;
448 ssid->disabled_until.usec = 0;
449 ssid->auth_failures = 0;
450 } else {
451 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
452 "received credential");
453 ssid = wpa_config_add_network(wpa_s->conf);
454 if (ssid == NULL)
455 return -1;
456 if (wpa_s->current_ssid) {
457 /*
458 * Should the GO issue multiple credentials for some
459 * reason, each credential should be marked as a
460 * temporary P2P group similarly to the one that gets
461 * marked as such based on the pre-configured values
462 * used for the WPS network block.
463 */
464 ssid->p2p_group = wpa_s->current_ssid->p2p_group;
465 ssid->temporary = wpa_s->current_ssid->temporary;
466 }
467 wpas_notify_network_added(wpa_s, ssid);
468 }
469
470 wpa_config_set_network_defaults(ssid);
471 ssid->wps_run = wpa_s->wps_run;
472
473 os_free(ssid->ssid);
474 ssid->ssid = os_malloc(cred->ssid_len);
475 if (ssid->ssid) {
476 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
477 ssid->ssid_len = cred->ssid_len;
478 }
479
480 switch (cred->encr_type) {
481 case WPS_ENCR_NONE:
482 break;
483 case WPS_ENCR_TKIP:
484 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
485 break;
486 case WPS_ENCR_AES:
487 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
488 if (wpa_s->drv_capa_known &&
489 (wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_GCMP)) {
490 ssid->pairwise_cipher |= WPA_CIPHER_GCMP;
491 ssid->group_cipher |= WPA_CIPHER_GCMP;
492 }
493 break;
494 }
495
496 switch (auth_type) {
497 case WPS_AUTH_OPEN:
498 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
499 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
500 ssid->proto = 0;
501 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
502 if (registrar) {
503 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
504 "id=%d - Credentials for an open "
505 "network disabled by default - use "
506 "'select_network %d' to enable",
507 ssid->id, ssid->id);
508 ssid->disabled = 1;
509 }
510 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
511 break;
512 case WPS_AUTH_WPAPSK:
513 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
514 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
515 ssid->proto = WPA_PROTO_WPA;
516 break;
517 case WPS_AUTH_WPA2PSK:
518 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
519 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
520 ssid->proto = WPA_PROTO_RSN;
521 break;
522 }
523
524 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
525 if (cred->key_len == 2 * PMK_LEN) {
526 if (hexstr2bin((const char *) cred->key, ssid->psk,
527 PMK_LEN)) {
528 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
529 "Key");
530 return -1;
531 }
532 ssid->psk_set = 1;
533 ssid->export_keys = 1;
534 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
535 os_free(ssid->passphrase);
536 ssid->passphrase = os_malloc(cred->key_len + 1);
537 if (ssid->passphrase == NULL)
538 return -1;
539 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
540 ssid->passphrase[cred->key_len] = '\0';
541 wpa_config_update_psk(ssid);
542 ssid->export_keys = 1;
543 } else {
544 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
545 "length %lu",
546 (unsigned long) cred->key_len);
547 return -1;
548 }
549 }
550 ssid->priority = wpa_s->conf->wps_priority;
551
552 wpas_wps_security_workaround(wpa_s, ssid, cred);
553
554 wpas_wps_remove_dup_network(wpa_s, ssid);
555
556 #ifndef CONFIG_NO_CONFIG_WRITE
557 if (wpa_s->conf->update_config &&
558 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
559 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
560 return -1;
561 }
562 #endif /* CONFIG_NO_CONFIG_WRITE */
563
564 if (ssid->priority)
565 wpa_config_update_prio_list(wpa_s->conf);
566
567 /*
568 * Optimize the post-WPS scan based on the channel used during
569 * the provisioning in case EAP-Failure is not received.
570 */
571 wpa_s->after_wps = 5;
572 wpa_s->wps_freq = wpa_s->assoc_freq;
573
574 return 0;
575 }
576
577
wpa_supplicant_wps_event_m2d(struct wpa_supplicant * wpa_s,struct wps_event_m2d * m2d)578 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
579 struct wps_event_m2d *m2d)
580 {
581 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
582 "dev_password_id=%d config_error=%d",
583 m2d->dev_password_id, m2d->config_error);
584 wpas_notify_wps_event_m2d(wpa_s, m2d);
585 #ifdef CONFIG_P2P
586 if (wpa_s->parent && wpa_s->parent != wpa_s) {
587 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
588 "dev_password_id=%d config_error=%d",
589 m2d->dev_password_id, m2d->config_error);
590 }
591 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
592 /*
593 * Notify P2P from eloop timeout to avoid issues with the
594 * interface getting removed while processing a message.
595 */
596 eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb, wpa_s,
597 NULL);
598 }
599 #endif /* CONFIG_P2P */
600 }
601
602
wpas_wps_clear_timeout(void * eloop_ctx,void * timeout_ctx)603 static void wpas_wps_clear_timeout(void *eloop_ctx, void *timeout_ctx)
604 {
605 struct wpa_supplicant *wpa_s = eloop_ctx;
606 wpa_printf(MSG_DEBUG, "WPS: Clear WPS network from timeout");
607 wpas_clear_wps(wpa_s);
608 }
609
610
wpa_supplicant_wps_event_fail(struct wpa_supplicant * wpa_s,struct wps_event_fail * fail)611 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
612 struct wps_event_fail *fail)
613 {
614 if (fail->error_indication > 0 &&
615 fail->error_indication < NUM_WPS_EI_VALUES) {
616 wpa_msg(wpa_s, MSG_INFO,
617 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
618 fail->msg, fail->config_error, fail->error_indication,
619 wps_ei_str(fail->error_indication));
620 if (wpa_s->parent && wpa_s->parent != wpa_s)
621 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
622 "msg=%d config_error=%d reason=%d (%s)",
623 fail->msg, fail->config_error,
624 fail->error_indication,
625 wps_ei_str(fail->error_indication));
626 } else {
627 wpa_msg(wpa_s, MSG_INFO,
628 WPS_EVENT_FAIL "msg=%d config_error=%d",
629 fail->msg, fail->config_error);
630 if (wpa_s->parent && wpa_s->parent != wpa_s)
631 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
632 "msg=%d config_error=%d",
633 fail->msg, fail->config_error);
634 }
635
636 /*
637 * Need to allow WPS processing to complete, e.g., by sending WSC_NACK.
638 */
639 wpa_printf(MSG_DEBUG, "WPS: Register timeout to clear WPS network");
640 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
641 eloop_register_timeout(0, 100000, wpas_wps_clear_timeout, wpa_s, NULL);
642
643 wpas_notify_wps_event_fail(wpa_s, fail);
644 wpas_p2p_wps_failed(wpa_s, fail);
645 }
646
647
648 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
649
wpas_wps_reenable_networks(struct wpa_supplicant * wpa_s)650 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
651 {
652 struct wpa_ssid *ssid;
653 int changed = 0;
654
655 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
656
657 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
658 if (ssid->disabled_for_connect && ssid->disabled) {
659 ssid->disabled_for_connect = 0;
660 ssid->disabled = 0;
661 wpas_notify_network_enabled_changed(wpa_s, ssid);
662 changed++;
663 }
664 }
665
666 if (changed) {
667 #ifndef CONFIG_NO_CONFIG_WRITE
668 if (wpa_s->conf->update_config &&
669 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
670 wpa_printf(MSG_DEBUG, "WPS: Failed to update "
671 "configuration");
672 }
673 #endif /* CONFIG_NO_CONFIG_WRITE */
674 }
675 }
676
677
wpas_wps_reenable_networks_cb(void * eloop_ctx,void * timeout_ctx)678 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
679 {
680 struct wpa_supplicant *wpa_s = eloop_ctx;
681 /* Enable the networks disabled during wpas_wps_reassoc */
682 wpas_wps_reenable_networks(wpa_s);
683 }
684
685
wpa_supplicant_wps_event_success(struct wpa_supplicant * wpa_s)686 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
687 {
688 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
689 wpa_s->wps_success = 1;
690 wpas_notify_wps_event_success(wpa_s);
691 if (wpa_s->current_ssid)
692 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
693 wpa_s->extra_blacklist_count = 0;
694
695 /*
696 * Enable the networks disabled during wpas_wps_reassoc after 10
697 * seconds. The 10 seconds timer is to allow the data connection to be
698 * formed before allowing other networks to be selected.
699 */
700 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
701 NULL);
702
703 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
704 }
705
706
wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant * wpa_s,struct wps_event_er_ap * ap)707 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
708 struct wps_event_er_ap *ap)
709 {
710 char uuid_str[100];
711 char dev_type[WPS_DEV_TYPE_BUFSIZE];
712
713 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
714 if (ap->pri_dev_type)
715 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
716 sizeof(dev_type));
717 else
718 dev_type[0] = '\0';
719
720 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
721 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
722 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
723 ap->friendly_name ? ap->friendly_name : "",
724 ap->manufacturer ? ap->manufacturer : "",
725 ap->model_description ? ap->model_description : "",
726 ap->model_name ? ap->model_name : "",
727 ap->manufacturer_url ? ap->manufacturer_url : "",
728 ap->model_url ? ap->model_url : "");
729 }
730
731
wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant * wpa_s,struct wps_event_er_ap * ap)732 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
733 struct wps_event_er_ap *ap)
734 {
735 char uuid_str[100];
736 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
737 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
738 }
739
740
wpa_supplicant_wps_event_er_enrollee_add(struct wpa_supplicant * wpa_s,struct wps_event_er_enrollee * enrollee)741 static void wpa_supplicant_wps_event_er_enrollee_add(
742 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
743 {
744 char uuid_str[100];
745 char dev_type[WPS_DEV_TYPE_BUFSIZE];
746
747 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
748 if (enrollee->pri_dev_type)
749 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
750 sizeof(dev_type));
751 else
752 dev_type[0] = '\0';
753
754 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
755 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
756 "|%s|%s|%s|%s|%s|",
757 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
758 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
759 enrollee->dev_name ? enrollee->dev_name : "",
760 enrollee->manufacturer ? enrollee->manufacturer : "",
761 enrollee->model_name ? enrollee->model_name : "",
762 enrollee->model_number ? enrollee->model_number : "",
763 enrollee->serial_number ? enrollee->serial_number : "");
764 }
765
766
wpa_supplicant_wps_event_er_enrollee_remove(struct wpa_supplicant * wpa_s,struct wps_event_er_enrollee * enrollee)767 static void wpa_supplicant_wps_event_er_enrollee_remove(
768 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
769 {
770 char uuid_str[100];
771 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
772 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
773 uuid_str, MAC2STR(enrollee->mac_addr));
774 }
775
776
wpa_supplicant_wps_event_er_ap_settings(struct wpa_supplicant * wpa_s,struct wps_event_er_ap_settings * ap_settings)777 static void wpa_supplicant_wps_event_er_ap_settings(
778 struct wpa_supplicant *wpa_s,
779 struct wps_event_er_ap_settings *ap_settings)
780 {
781 char uuid_str[100];
782 char key_str[65];
783 const struct wps_credential *cred = ap_settings->cred;
784
785 key_str[0] = '\0';
786 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
787 if (cred->key_len >= 8 && cred->key_len <= 64) {
788 os_memcpy(key_str, cred->key, cred->key_len);
789 key_str[cred->key_len] = '\0';
790 }
791 }
792
793 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
794 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
795 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
796 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
797 "key=%s",
798 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
799 cred->auth_type, cred->encr_type, key_str);
800 }
801
802
wpa_supplicant_wps_event_er_set_sel_reg(struct wpa_supplicant * wpa_s,struct wps_event_er_set_selected_registrar * ev)803 static void wpa_supplicant_wps_event_er_set_sel_reg(
804 struct wpa_supplicant *wpa_s,
805 struct wps_event_er_set_selected_registrar *ev)
806 {
807 char uuid_str[100];
808
809 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
810 switch (ev->state) {
811 case WPS_ER_SET_SEL_REG_START:
812 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
813 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
814 "sel_reg_config_methods=0x%x",
815 uuid_str, ev->sel_reg, ev->dev_passwd_id,
816 ev->sel_reg_config_methods);
817 break;
818 case WPS_ER_SET_SEL_REG_DONE:
819 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
820 "uuid=%s state=DONE", uuid_str);
821 break;
822 case WPS_ER_SET_SEL_REG_FAILED:
823 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
824 "uuid=%s state=FAILED", uuid_str);
825 break;
826 }
827 }
828
829
wpa_supplicant_wps_event(void * ctx,enum wps_event event,union wps_event_data * data)830 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
831 union wps_event_data *data)
832 {
833 struct wpa_supplicant *wpa_s = ctx;
834 switch (event) {
835 case WPS_EV_M2D:
836 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
837 break;
838 case WPS_EV_FAIL:
839 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
840 break;
841 case WPS_EV_SUCCESS:
842 wpa_supplicant_wps_event_success(wpa_s);
843 break;
844 case WPS_EV_PWD_AUTH_FAIL:
845 #ifdef CONFIG_AP
846 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
847 wpa_supplicant_ap_pwd_auth_fail(wpa_s);
848 #endif /* CONFIG_AP */
849 break;
850 case WPS_EV_PBC_OVERLAP:
851 break;
852 case WPS_EV_PBC_TIMEOUT:
853 break;
854 case WPS_EV_PBC_ACTIVE:
855 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
856 break;
857 case WPS_EV_PBC_DISABLE:
858 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
859 break;
860 case WPS_EV_ER_AP_ADD:
861 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
862 break;
863 case WPS_EV_ER_AP_REMOVE:
864 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
865 break;
866 case WPS_EV_ER_ENROLLEE_ADD:
867 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
868 &data->enrollee);
869 break;
870 case WPS_EV_ER_ENROLLEE_REMOVE:
871 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
872 &data->enrollee);
873 break;
874 case WPS_EV_ER_AP_SETTINGS:
875 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
876 &data->ap_settings);
877 break;
878 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
879 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
880 &data->set_sel_reg);
881 break;
882 case WPS_EV_AP_PIN_SUCCESS:
883 break;
884 }
885 }
886
887
wpa_supplicant_wps_rf_band(void * ctx)888 static int wpa_supplicant_wps_rf_band(void *ctx)
889 {
890 struct wpa_supplicant *wpa_s = ctx;
891
892 if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
893 return 0;
894
895 return (wpa_s->assoc_freq > 50000) ? WPS_RF_60GHZ :
896 (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
897 }
898
899
wpas_wps_get_req_type(struct wpa_ssid * ssid)900 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
901 {
902 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
903 eap_is_wps_pin_enrollee(&ssid->eap))
904 return WPS_REQ_ENROLLEE;
905 else
906 return WPS_REQ_REGISTRAR;
907 }
908
909
wpas_clear_wps(struct wpa_supplicant * wpa_s)910 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
911 {
912 int id;
913 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
914
915 wpa_s->after_wps = 0;
916 wpa_s->known_wps_freq = 0;
917
918 prev_current = wpa_s->current_ssid;
919
920 /* Enable the networks disabled during wpas_wps_reassoc */
921 wpas_wps_reenable_networks(wpa_s);
922
923 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
924 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
925
926 /* Remove any existing WPS network from configuration */
927 ssid = wpa_s->conf->ssid;
928 while (ssid) {
929 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
930 if (ssid == wpa_s->current_ssid) {
931 wpa_s->own_disconnect_req = 1;
932 wpa_supplicant_deauthenticate(
933 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
934 }
935 id = ssid->id;
936 remove_ssid = ssid;
937 } else
938 id = -1;
939 ssid = ssid->next;
940 if (id >= 0) {
941 if (prev_current == remove_ssid) {
942 wpa_sm_set_config(wpa_s->wpa, NULL);
943 eapol_sm_notify_config(wpa_s->eapol, NULL,
944 NULL);
945 }
946 wpas_notify_network_removed(wpa_s, remove_ssid);
947 wpa_config_remove_network(wpa_s->conf, id);
948 }
949 }
950
951 wpas_wps_clear_ap_info(wpa_s);
952 }
953
954
wpas_wps_timeout(void * eloop_ctx,void * timeout_ctx)955 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
956 {
957 struct wpa_supplicant *wpa_s = eloop_ctx;
958 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
959 "out");
960 wpas_clear_wps(wpa_s);
961 }
962
963
wpas_wps_add_network(struct wpa_supplicant * wpa_s,int registrar,const u8 * dev_addr,const u8 * bssid)964 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
965 int registrar, const u8 *dev_addr,
966 const u8 *bssid)
967 {
968 struct wpa_ssid *ssid;
969
970 ssid = wpa_config_add_network(wpa_s->conf);
971 if (ssid == NULL)
972 return NULL;
973 wpas_notify_network_added(wpa_s, ssid);
974 wpa_config_set_network_defaults(ssid);
975 ssid->temporary = 1;
976 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
977 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
978 wpa_config_set(ssid, "identity", registrar ?
979 "\"" WSC_ID_REGISTRAR "\"" :
980 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
981 wpas_notify_network_removed(wpa_s, ssid);
982 wpa_config_remove_network(wpa_s->conf, ssid->id);
983 return NULL;
984 }
985
986 #ifdef CONFIG_P2P
987 if (dev_addr)
988 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN);
989 #endif /* CONFIG_P2P */
990
991 if (bssid) {
992 #ifndef CONFIG_P2P
993 struct wpa_bss *bss;
994 int count = 0;
995 #endif /* CONFIG_P2P */
996
997 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
998 ssid->bssid_set = 1;
999
1000 /*
1001 * Note: With P2P, the SSID may change at the time the WPS
1002 * provisioning is started, so better not filter the AP based
1003 * on the current SSID in the scan results.
1004 */
1005 #ifndef CONFIG_P2P
1006 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1007 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
1008 continue;
1009
1010 os_free(ssid->ssid);
1011 ssid->ssid = os_malloc(bss->ssid_len);
1012 if (ssid->ssid == NULL)
1013 break;
1014 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1015 ssid->ssid_len = bss->ssid_len;
1016 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
1017 "scan results",
1018 ssid->ssid, ssid->ssid_len);
1019 count++;
1020 }
1021
1022 if (count > 1) {
1023 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
1024 "for the AP; use wildcard");
1025 os_free(ssid->ssid);
1026 ssid->ssid = NULL;
1027 ssid->ssid_len = 0;
1028 }
1029 #endif /* CONFIG_P2P */
1030 }
1031
1032 return ssid;
1033 }
1034
1035
wpas_wps_temp_disable(struct wpa_supplicant * wpa_s,struct wpa_ssid * selected)1036 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
1037 struct wpa_ssid *selected)
1038 {
1039 struct wpa_ssid *ssid;
1040
1041 if (wpa_s->current_ssid) {
1042 wpa_s->own_disconnect_req = 1;
1043 wpa_supplicant_deauthenticate(
1044 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1045 }
1046
1047 /* Mark all other networks disabled and trigger reassociation */
1048 ssid = wpa_s->conf->ssid;
1049 while (ssid) {
1050 int was_disabled = ssid->disabled;
1051 ssid->disabled_for_connect = 0;
1052 /*
1053 * In case the network object corresponds to a persistent group
1054 * then do not send out network disabled signal. In addition,
1055 * do not change disabled status of persistent network objects
1056 * from 2 to 1 should we connect to another network.
1057 */
1058 if (was_disabled != 2) {
1059 ssid->disabled = ssid != selected;
1060 if (was_disabled != ssid->disabled) {
1061 if (ssid->disabled)
1062 ssid->disabled_for_connect = 1;
1063 wpas_notify_network_enabled_changed(wpa_s,
1064 ssid);
1065 }
1066 }
1067 ssid = ssid->next;
1068 }
1069 }
1070
1071
wpas_wps_reassoc(struct wpa_supplicant * wpa_s,struct wpa_ssid * selected,const u8 * bssid,int freq)1072 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1073 struct wpa_ssid *selected, const u8 *bssid,
1074 int freq)
1075 {
1076 struct wpa_bss *bss;
1077
1078 wpa_s->wps_run++;
1079 if (wpa_s->wps_run == 0)
1080 wpa_s->wps_run++;
1081 wpa_s->after_wps = 0;
1082 wpa_s->known_wps_freq = 0;
1083 if (freq) {
1084 wpa_s->after_wps = 5;
1085 wpa_s->wps_freq = freq;
1086 } else if (bssid) {
1087 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1088 if (bss && bss->freq > 0) {
1089 wpa_s->known_wps_freq = 1;
1090 wpa_s->wps_freq = bss->freq;
1091 }
1092 }
1093
1094 wpas_wps_temp_disable(wpa_s, selected);
1095
1096 wpa_s->disconnected = 0;
1097 wpa_s->reassociate = 1;
1098 wpa_s->scan_runs = 0;
1099 wpa_s->normal_scans = 0;
1100 wpa_s->wps_success = 0;
1101 wpa_s->blacklist_cleared = 0;
1102
1103 wpa_supplicant_cancel_sched_scan(wpa_s);
1104 wpa_supplicant_req_scan(wpa_s, 0, 0);
1105 }
1106
1107
wpas_wps_start_pbc(struct wpa_supplicant * wpa_s,const u8 * bssid,int p2p_group)1108 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1109 int p2p_group)
1110 {
1111 struct wpa_ssid *ssid;
1112
1113 #ifdef CONFIG_AP
1114 if (wpa_s->ap_iface) {
1115 wpa_printf(MSG_DEBUG,
1116 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1117 return -1;
1118 }
1119 #endif /* CONFIG_AP */
1120 wpas_clear_wps(wpa_s);
1121 ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid);
1122 if (ssid == NULL)
1123 return -1;
1124 ssid->temporary = 1;
1125 ssid->p2p_group = p2p_group;
1126 #ifdef CONFIG_P2P
1127 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1128 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1129 if (ssid->ssid) {
1130 ssid->ssid_len = wpa_s->go_params->ssid_len;
1131 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1132 ssid->ssid_len);
1133 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1134 "SSID", ssid->ssid, ssid->ssid_len);
1135 }
1136 }
1137 #endif /* CONFIG_P2P */
1138 if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1139 return -1;
1140 if (wpa_s->wps_fragment_size)
1141 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1142 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1143 wpa_s, NULL);
1144 wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1145 return 0;
1146 }
1147
1148
wpas_wps_start_dev_pw(struct wpa_supplicant * wpa_s,const u8 * dev_addr,const u8 * bssid,const char * pin,int p2p_group,u16 dev_pw_id,const u8 * peer_pubkey_hash,const u8 * ssid_val,size_t ssid_len,int freq)1149 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s,
1150 const u8 *dev_addr, const u8 *bssid,
1151 const char *pin, int p2p_group, u16 dev_pw_id,
1152 const u8 *peer_pubkey_hash,
1153 const u8 *ssid_val, size_t ssid_len, int freq)
1154 {
1155 struct wpa_ssid *ssid;
1156 char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1157 unsigned int rpin = 0;
1158 char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1159
1160 #ifdef CONFIG_AP
1161 if (wpa_s->ap_iface) {
1162 wpa_printf(MSG_DEBUG,
1163 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1164 return -1;
1165 }
1166 #endif /* CONFIG_AP */
1167 wpas_clear_wps(wpa_s);
1168 if (bssid && is_zero_ether_addr(bssid))
1169 bssid = NULL;
1170 ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
1171 if (ssid == NULL) {
1172 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1173 return -1;
1174 }
1175 ssid->temporary = 1;
1176 ssid->p2p_group = p2p_group;
1177 if (ssid_val) {
1178 ssid->ssid = os_malloc(ssid_len);
1179 if (ssid->ssid) {
1180 os_memcpy(ssid->ssid, ssid_val, ssid_len);
1181 ssid->ssid_len = ssid_len;
1182 }
1183 }
1184 if (peer_pubkey_hash) {
1185 os_memcpy(hash, " pkhash=", 8);
1186 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1187 peer_pubkey_hash,
1188 WPS_OOB_PUBKEY_HASH_LEN);
1189 } else {
1190 hash[0] = '\0';
1191 }
1192 #ifdef CONFIG_P2P
1193 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1194 os_free(ssid->ssid);
1195 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1196 if (ssid->ssid) {
1197 ssid->ssid_len = wpa_s->go_params->ssid_len;
1198 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1199 ssid->ssid_len);
1200 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1201 "SSID", ssid->ssid, ssid->ssid_len);
1202 }
1203 }
1204 #endif /* CONFIG_P2P */
1205 if (pin)
1206 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1207 pin, dev_pw_id, hash);
1208 else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1209 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1210 dev_pw_id, hash);
1211 } else {
1212 rpin = wps_generate_pin();
1213 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1214 rpin, dev_pw_id, hash);
1215 }
1216 if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1217 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1218 return -1;
1219 }
1220 if (wpa_s->wps_fragment_size)
1221 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1222 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1223 wpa_s, NULL);
1224 wpa_s->wps_ap_iter = 1;
1225 wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
1226 return rpin;
1227 }
1228
1229
wpas_wps_start_pin(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * pin,int p2p_group,u16 dev_pw_id)1230 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1231 const char *pin, int p2p_group, u16 dev_pw_id)
1232 {
1233 os_get_reltime(&wpa_s->wps_pin_start_time);
1234 return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group,
1235 dev_pw_id, NULL, NULL, 0, 0);
1236 }
1237
1238
1239 /* Cancel the wps pbc/pin requests */
wpas_wps_cancel(struct wpa_supplicant * wpa_s)1240 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1241 {
1242 #ifdef CONFIG_AP
1243 if (wpa_s->ap_iface) {
1244 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1245 return wpa_supplicant_ap_wps_cancel(wpa_s);
1246 }
1247 #endif /* CONFIG_AP */
1248
1249 if (wpa_s->wpa_state == WPA_SCANNING ||
1250 wpa_s->wpa_state == WPA_DISCONNECTED) {
1251 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1252 wpa_supplicant_cancel_scan(wpa_s);
1253 wpas_clear_wps(wpa_s);
1254 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1255 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1256 "deauthenticate");
1257 wpa_s->own_disconnect_req = 1;
1258 wpa_supplicant_deauthenticate(wpa_s,
1259 WLAN_REASON_DEAUTH_LEAVING);
1260 wpas_clear_wps(wpa_s);
1261 } else {
1262 wpas_wps_reenable_networks(wpa_s);
1263 wpas_wps_clear_ap_info(wpa_s);
1264 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1265 0)
1266 wpas_clear_wps(wpa_s);
1267 }
1268
1269 wpa_s->after_wps = 0;
1270
1271 return 0;
1272 }
1273
1274
wpas_wps_start_reg(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * pin,struct wps_new_ap_settings * settings)1275 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1276 const char *pin, struct wps_new_ap_settings *settings)
1277 {
1278 struct wpa_ssid *ssid;
1279 char val[200];
1280 char *pos, *end;
1281 int res;
1282
1283 #ifdef CONFIG_AP
1284 if (wpa_s->ap_iface) {
1285 wpa_printf(MSG_DEBUG,
1286 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1287 return -1;
1288 }
1289 #endif /* CONFIG_AP */
1290 if (!pin)
1291 return -1;
1292 wpas_clear_wps(wpa_s);
1293 ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
1294 if (ssid == NULL)
1295 return -1;
1296 ssid->temporary = 1;
1297 pos = val;
1298 end = pos + sizeof(val);
1299 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1300 if (os_snprintf_error(end - pos, res))
1301 return -1;
1302 pos += res;
1303 if (settings) {
1304 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1305 "new_encr=%s new_key=%s",
1306 settings->ssid_hex, settings->auth,
1307 settings->encr, settings->key_hex);
1308 if (os_snprintf_error(end - pos, res))
1309 return -1;
1310 pos += res;
1311 }
1312 res = os_snprintf(pos, end - pos, "\"");
1313 if (os_snprintf_error(end - pos, res))
1314 return -1;
1315 if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1316 return -1;
1317 if (wpa_s->wps_fragment_size)
1318 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1319 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1320 wpa_s, NULL);
1321 wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1322 return 0;
1323 }
1324
1325
wpas_wps_new_psk_cb(void * ctx,const u8 * mac_addr,const u8 * p2p_dev_addr,const u8 * psk,size_t psk_len)1326 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1327 const u8 *p2p_dev_addr, const u8 *psk,
1328 size_t psk_len)
1329 {
1330 if (is_zero_ether_addr(p2p_dev_addr)) {
1331 wpa_printf(MSG_DEBUG,
1332 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1333 MAC2STR(mac_addr));
1334 } else {
1335 wpa_printf(MSG_DEBUG,
1336 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1337 " P2P Device Addr " MACSTR,
1338 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1339 }
1340 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1341
1342 /* TODO */
1343
1344 return 0;
1345 }
1346
1347
wpas_wps_pin_needed_cb(void * ctx,const u8 * uuid_e,const struct wps_device_data * dev)1348 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1349 const struct wps_device_data *dev)
1350 {
1351 char uuid[40], txt[400];
1352 int len;
1353 char devtype[WPS_DEV_TYPE_BUFSIZE];
1354 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1355 return;
1356 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1357 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1358 " [%s|%s|%s|%s|%s|%s]",
1359 uuid, MAC2STR(dev->mac_addr), dev->device_name,
1360 dev->manufacturer, dev->model_name,
1361 dev->model_number, dev->serial_number,
1362 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1363 sizeof(devtype)));
1364 if (!os_snprintf_error(sizeof(txt), len))
1365 wpa_printf(MSG_INFO, "%s", txt);
1366 }
1367
1368
wpas_wps_set_sel_reg_cb(void * ctx,int sel_reg,u16 dev_passwd_id,u16 sel_reg_config_methods)1369 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1370 u16 sel_reg_config_methods)
1371 {
1372 #ifdef CONFIG_WPS_ER
1373 struct wpa_supplicant *wpa_s = ctx;
1374
1375 if (wpa_s->wps_er == NULL)
1376 return;
1377 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1378 "dev_password_id=%u sel_reg_config_methods=0x%x",
1379 sel_reg, dev_passwd_id, sel_reg_config_methods);
1380 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1381 sel_reg_config_methods);
1382 #endif /* CONFIG_WPS_ER */
1383 }
1384
1385
wps_fix_config_methods(u16 config_methods)1386 static u16 wps_fix_config_methods(u16 config_methods)
1387 {
1388 if ((config_methods &
1389 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1390 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1391 wpa_printf(MSG_INFO, "WPS: Converting display to "
1392 "virtual_display for WPS 2.0 compliance");
1393 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1394 }
1395 if ((config_methods &
1396 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1397 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1398 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1399 "virtual_push_button for WPS 2.0 compliance");
1400 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1401 }
1402
1403 return config_methods;
1404 }
1405
1406
wpas_wps_set_uuid(struct wpa_supplicant * wpa_s,struct wps_context * wps)1407 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1408 struct wps_context *wps)
1409 {
1410 char buf[50];
1411 const char *src;
1412
1413 if (is_nil_uuid(wpa_s->conf->uuid)) {
1414 struct wpa_supplicant *first;
1415 first = wpa_s->global->ifaces;
1416 while (first && first->next)
1417 first = first->next;
1418 if (first && first != wpa_s) {
1419 if (wps != wpa_s->global->ifaces->wps)
1420 os_memcpy(wps->uuid,
1421 wpa_s->global->ifaces->wps->uuid,
1422 WPS_UUID_LEN);
1423 src = "from the first interface";
1424 } else {
1425 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1426 src = "based on MAC address";
1427 }
1428 } else {
1429 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1430 src = "based on configuration";
1431 }
1432
1433 uuid_bin2str(wps->uuid, buf, sizeof(buf));
1434 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1435 }
1436
1437
wpas_wps_set_vendor_ext_m1(struct wpa_supplicant * wpa_s,struct wps_context * wps)1438 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1439 struct wps_context *wps)
1440 {
1441 wpabuf_free(wps->dev.vendor_ext_m1);
1442 wps->dev.vendor_ext_m1 = NULL;
1443
1444 if (wpa_s->conf->wps_vendor_ext_m1) {
1445 wps->dev.vendor_ext_m1 =
1446 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1447 if (!wps->dev.vendor_ext_m1) {
1448 wpa_printf(MSG_ERROR, "WPS: Cannot "
1449 "allocate memory for vendor_ext_m1");
1450 }
1451 }
1452 }
1453
1454
wpas_wps_init(struct wpa_supplicant * wpa_s)1455 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1456 {
1457 struct wps_context *wps;
1458 struct wps_registrar_config rcfg;
1459 struct hostapd_hw_modes *modes;
1460 u16 m;
1461
1462 wps = os_zalloc(sizeof(*wps));
1463 if (wps == NULL)
1464 return -1;
1465
1466 wps->cred_cb = wpa_supplicant_wps_cred;
1467 wps->event_cb = wpa_supplicant_wps_event;
1468 wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1469 wps->cb_ctx = wpa_s;
1470
1471 wps->dev.device_name = wpa_s->conf->device_name;
1472 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1473 wps->dev.model_name = wpa_s->conf->model_name;
1474 wps->dev.model_number = wpa_s->conf->model_number;
1475 wps->dev.serial_number = wpa_s->conf->serial_number;
1476 wps->config_methods =
1477 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1478 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1479 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1480 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1481 "methods are not allowed at the same time");
1482 os_free(wps);
1483 return -1;
1484 }
1485 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1486 wps->dev.config_methods = wps->config_methods;
1487 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1488 WPS_DEV_TYPE_LEN);
1489
1490 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1491 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1492 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1493
1494 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1495
1496 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1497 modes = wpa_s->hw.modes;
1498 if (modes) {
1499 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1500 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1501 modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1502 wps->dev.rf_bands |= WPS_RF_24GHZ;
1503 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1504 wps->dev.rf_bands |= WPS_RF_50GHZ;
1505 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211AD)
1506 wps->dev.rf_bands |= WPS_RF_60GHZ;
1507 }
1508 }
1509 if (wps->dev.rf_bands == 0) {
1510 /*
1511 * Default to claiming support for both bands if the driver
1512 * does not provide support for fetching supported bands.
1513 */
1514 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1515 }
1516 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1517 wpas_wps_set_uuid(wpa_s, wps);
1518
1519 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1520 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1521
1522 os_memset(&rcfg, 0, sizeof(rcfg));
1523 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1524 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1525 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1526 rcfg.cb_ctx = wpa_s;
1527
1528 wps->registrar = wps_registrar_init(wps, &rcfg);
1529 if (wps->registrar == NULL) {
1530 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1531 os_free(wps);
1532 return -1;
1533 }
1534
1535 wpa_s->wps = wps;
1536
1537 return 0;
1538 }
1539
1540
1541 #ifdef CONFIG_WPS_ER
wpas_wps_nfc_clear(struct wps_context * wps)1542 static void wpas_wps_nfc_clear(struct wps_context *wps)
1543 {
1544 wps->ap_nfc_dev_pw_id = 0;
1545 wpabuf_free(wps->ap_nfc_dh_pubkey);
1546 wps->ap_nfc_dh_pubkey = NULL;
1547 wpabuf_free(wps->ap_nfc_dh_privkey);
1548 wps->ap_nfc_dh_privkey = NULL;
1549 wpabuf_free(wps->ap_nfc_dev_pw);
1550 wps->ap_nfc_dev_pw = NULL;
1551 }
1552 #endif /* CONFIG_WPS_ER */
1553
1554
wpas_wps_deinit(struct wpa_supplicant * wpa_s)1555 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1556 {
1557 wpas_wps_assoc_with_cred_cancel(wpa_s);
1558 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1559 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1560 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1561 wpas_wps_clear_ap_info(wpa_s);
1562
1563 #ifdef CONFIG_P2P
1564 eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
1565 #endif /* CONFIG_P2P */
1566
1567 if (wpa_s->wps == NULL)
1568 return;
1569
1570 #ifdef CONFIG_WPS_ER
1571 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1572 wpa_s->wps_er = NULL;
1573 wpas_wps_nfc_clear(wpa_s->wps);
1574 #endif /* CONFIG_WPS_ER */
1575
1576 wps_registrar_deinit(wpa_s->wps->registrar);
1577 wpabuf_free(wpa_s->wps->dh_pubkey);
1578 wpabuf_free(wpa_s->wps->dh_privkey);
1579 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1580 os_free(wpa_s->wps->network_key);
1581 os_free(wpa_s->wps);
1582 wpa_s->wps = NULL;
1583 }
1584
1585
wpas_wps_ssid_bss_match(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)1586 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1587 struct wpa_ssid *ssid, struct wpa_bss *bss)
1588 {
1589 struct wpabuf *wps_ie;
1590
1591 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1592 return -1;
1593
1594 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1595 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1596 if (!wps_ie) {
1597 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1598 return 0;
1599 }
1600
1601 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1602 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1603 "without active PBC Registrar");
1604 wpabuf_free(wps_ie);
1605 return 0;
1606 }
1607
1608 /* TODO: overlap detection */
1609 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1610 "(Active PBC)");
1611 wpabuf_free(wps_ie);
1612 return 1;
1613 }
1614
1615 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1616 if (!wps_ie) {
1617 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1618 return 0;
1619 }
1620
1621 /*
1622 * Start with WPS APs that advertise our address as an
1623 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1624 * allow any WPS AP after couple of scans since some APs do not
1625 * set Selected Registrar attribute properly when using
1626 * external Registrar.
1627 */
1628 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1629 struct os_reltime age;
1630
1631 os_reltime_age(&wpa_s->wps_pin_start_time, &age);
1632
1633 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG ||
1634 age.sec < WPS_PIN_TIME_IGNORE_SEL_REG) {
1635 wpa_printf(MSG_DEBUG,
1636 " skip - WPS AP without active PIN Registrar (scan_runs=%d age=%d)",
1637 wpa_s->scan_runs, (int) age.sec);
1638 wpabuf_free(wps_ie);
1639 return 0;
1640 }
1641 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1642 } else {
1643 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1644 "(Authorized MAC or Active PIN)");
1645 }
1646 wpabuf_free(wps_ie);
1647 return 1;
1648 }
1649
1650 if (wps_ie) {
1651 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1652 wpabuf_free(wps_ie);
1653 return 1;
1654 }
1655
1656 return -1;
1657 }
1658
1659
wpas_wps_ssid_wildcard_ok(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)1660 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1661 struct wpa_ssid *ssid,
1662 struct wpa_bss *bss)
1663 {
1664 struct wpabuf *wps_ie = NULL;
1665 int ret = 0;
1666
1667 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1668 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1669 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1670 /* allow wildcard SSID for WPS PBC */
1671 ret = 1;
1672 }
1673 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1674 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1675 if (wps_ie &&
1676 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1677 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1678 /* allow wildcard SSID for WPS PIN */
1679 ret = 1;
1680 }
1681 }
1682
1683 if (!ret && ssid->bssid_set &&
1684 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1685 /* allow wildcard SSID due to hardcoded BSSID match */
1686 ret = 1;
1687 }
1688
1689 #ifdef CONFIG_WPS_STRICT
1690 if (wps_ie) {
1691 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1692 0, bss->bssid) < 0)
1693 ret = 0;
1694 if (bss->beacon_ie_len) {
1695 struct wpabuf *bcn_wps;
1696 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1697 bss, WPS_IE_VENDOR_TYPE);
1698 if (bcn_wps == NULL) {
1699 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1700 "missing from AP Beacon");
1701 ret = 0;
1702 } else {
1703 if (wps_validate_beacon(wps_ie) < 0)
1704 ret = 0;
1705 wpabuf_free(bcn_wps);
1706 }
1707 }
1708 }
1709 #endif /* CONFIG_WPS_STRICT */
1710
1711 wpabuf_free(wps_ie);
1712
1713 return ret;
1714 }
1715
1716
wpas_wps_scan_pbc_overlap(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid)1717 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1718 struct wpa_bss *selected, struct wpa_ssid *ssid)
1719 {
1720 const u8 *sel_uuid;
1721 struct wpabuf *wps_ie;
1722 int ret = 0;
1723 size_t i;
1724
1725 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1726 return 0;
1727
1728 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1729 "present in scan results; selected BSSID " MACSTR,
1730 MAC2STR(selected->bssid));
1731
1732 /* Make sure that only one AP is in active PBC mode */
1733 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1734 if (wps_ie) {
1735 sel_uuid = wps_get_uuid_e(wps_ie);
1736 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1737 sel_uuid, UUID_LEN);
1738 } else {
1739 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1740 "WPS IE?!");
1741 sel_uuid = NULL;
1742 }
1743
1744 for (i = 0; i < wpa_s->num_wps_ap; i++) {
1745 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1746
1747 if (!ap->pbc_active ||
1748 os_memcmp(selected->bssid, ap->bssid, ETH_ALEN) == 0)
1749 continue;
1750
1751 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1752 MACSTR, MAC2STR(ap->bssid));
1753 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1754 ap->uuid, UUID_LEN);
1755 if (sel_uuid == NULL ||
1756 os_memcmp(sel_uuid, ap->uuid, UUID_LEN) != 0) {
1757 ret = 1; /* PBC overlap */
1758 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1759 MACSTR " and " MACSTR,
1760 MAC2STR(selected->bssid),
1761 MAC2STR(ap->bssid));
1762 break;
1763 }
1764
1765 /* TODO: verify that this is reasonable dual-band situation */
1766 }
1767
1768 wpabuf_free(wps_ie);
1769
1770 return ret;
1771 }
1772
1773
wpas_wps_notify_scan_results(struct wpa_supplicant * wpa_s)1774 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1775 {
1776 struct wpa_bss *bss;
1777 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1778
1779 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1780 return;
1781
1782 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1783 struct wpabuf *ie;
1784 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1785 if (!ie)
1786 continue;
1787 if (wps_is_selected_pbc_registrar(ie))
1788 pbc++;
1789 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1790 auth++;
1791 else if (wps_is_selected_pin_registrar(ie))
1792 pin++;
1793 else
1794 wps++;
1795 wpabuf_free(ie);
1796 }
1797
1798 if (pbc)
1799 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1800 else if (auth)
1801 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1802 else if (pin)
1803 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1804 else if (wps)
1805 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1806 }
1807
1808
wpas_wps_searching(struct wpa_supplicant * wpa_s)1809 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1810 {
1811 struct wpa_ssid *ssid;
1812
1813 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1814 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1815 return 1;
1816 }
1817
1818 return 0;
1819 }
1820
1821
wpas_wps_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)1822 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1823 char *end)
1824 {
1825 struct wpabuf *wps_ie;
1826 int ret;
1827
1828 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1829 if (wps_ie == NULL)
1830 return 0;
1831
1832 ret = wps_attr_text(wps_ie, buf, end);
1833 wpabuf_free(wps_ie);
1834 return ret;
1835 }
1836
1837
wpas_wps_er_start(struct wpa_supplicant * wpa_s,const char * filter)1838 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1839 {
1840 #ifdef CONFIG_WPS_ER
1841 if (wpa_s->wps_er) {
1842 wps_er_refresh(wpa_s->wps_er);
1843 return 0;
1844 }
1845 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1846 if (wpa_s->wps_er == NULL)
1847 return -1;
1848 return 0;
1849 #else /* CONFIG_WPS_ER */
1850 return 0;
1851 #endif /* CONFIG_WPS_ER */
1852 }
1853
1854
wpas_wps_er_stop(struct wpa_supplicant * wpa_s)1855 void wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1856 {
1857 #ifdef CONFIG_WPS_ER
1858 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1859 wpa_s->wps_er = NULL;
1860 #endif /* CONFIG_WPS_ER */
1861 }
1862
1863
1864 #ifdef CONFIG_WPS_ER
wpas_wps_er_add_pin(struct wpa_supplicant * wpa_s,const u8 * addr,const char * uuid,const char * pin)1865 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1866 const char *uuid, const char *pin)
1867 {
1868 u8 u[UUID_LEN];
1869 const u8 *use_uuid = NULL;
1870 u8 addr_buf[ETH_ALEN];
1871
1872 if (os_strcmp(uuid, "any") == 0) {
1873 } else if (uuid_str2bin(uuid, u) == 0) {
1874 use_uuid = u;
1875 } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1876 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1877 if (use_uuid == NULL)
1878 return -1;
1879 } else
1880 return -1;
1881 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1882 use_uuid,
1883 (const u8 *) pin, os_strlen(pin), 300);
1884 }
1885
1886
wpas_wps_er_pbc(struct wpa_supplicant * wpa_s,const char * uuid)1887 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1888 {
1889 u8 u[UUID_LEN], *use_uuid = NULL;
1890 u8 addr[ETH_ALEN], *use_addr = NULL;
1891
1892 if (uuid_str2bin(uuid, u) == 0)
1893 use_uuid = u;
1894 else if (hwaddr_aton(uuid, addr) == 0)
1895 use_addr = addr;
1896 else
1897 return -1;
1898 return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1899 }
1900
1901
wpas_wps_er_learn(struct wpa_supplicant * wpa_s,const char * uuid,const char * pin)1902 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1903 const char *pin)
1904 {
1905 u8 u[UUID_LEN], *use_uuid = NULL;
1906 u8 addr[ETH_ALEN], *use_addr = NULL;
1907
1908 if (uuid_str2bin(uuid, u) == 0)
1909 use_uuid = u;
1910 else if (hwaddr_aton(uuid, addr) == 0)
1911 use_addr = addr;
1912 else
1913 return -1;
1914
1915 return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1916 os_strlen(pin));
1917 }
1918
1919
wpas_wps_network_to_cred(struct wpa_ssid * ssid,struct wps_credential * cred)1920 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1921 struct wps_credential *cred)
1922 {
1923 os_memset(cred, 0, sizeof(*cred));
1924 if (ssid->ssid_len > SSID_MAX_LEN)
1925 return -1;
1926 os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1927 cred->ssid_len = ssid->ssid_len;
1928 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1929 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1930 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1931 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1932 cred->encr_type = WPS_ENCR_AES;
1933 else
1934 cred->encr_type = WPS_ENCR_TKIP;
1935 if (ssid->passphrase) {
1936 cred->key_len = os_strlen(ssid->passphrase);
1937 if (cred->key_len >= 64)
1938 return -1;
1939 os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1940 } else if (ssid->psk_set) {
1941 cred->key_len = 32;
1942 os_memcpy(cred->key, ssid->psk, 32);
1943 } else
1944 return -1;
1945 } else {
1946 cred->auth_type = WPS_AUTH_OPEN;
1947 cred->encr_type = WPS_ENCR_NONE;
1948 }
1949
1950 return 0;
1951 }
1952
1953
wpas_wps_er_set_config(struct wpa_supplicant * wpa_s,const char * uuid,int id)1954 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1955 int id)
1956 {
1957 u8 u[UUID_LEN], *use_uuid = NULL;
1958 u8 addr[ETH_ALEN], *use_addr = NULL;
1959 struct wpa_ssid *ssid;
1960 struct wps_credential cred;
1961 int ret;
1962
1963 if (uuid_str2bin(uuid, u) == 0)
1964 use_uuid = u;
1965 else if (hwaddr_aton(uuid, addr) == 0)
1966 use_addr = addr;
1967 else
1968 return -1;
1969 ssid = wpa_config_get_network(wpa_s->conf, id);
1970 if (ssid == NULL || ssid->ssid == NULL)
1971 return -1;
1972
1973 if (wpas_wps_network_to_cred(ssid, &cred) < 0)
1974 return -1;
1975 ret = wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
1976 os_memset(&cred, 0, sizeof(cred));
1977 return ret;
1978 }
1979
1980
wpas_wps_er_config(struct wpa_supplicant * wpa_s,const char * uuid,const char * pin,struct wps_new_ap_settings * settings)1981 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1982 const char *pin, struct wps_new_ap_settings *settings)
1983 {
1984 u8 u[UUID_LEN], *use_uuid = NULL;
1985 u8 addr[ETH_ALEN], *use_addr = NULL;
1986 struct wps_credential cred;
1987 size_t len;
1988
1989 if (uuid_str2bin(uuid, u) == 0)
1990 use_uuid = u;
1991 else if (hwaddr_aton(uuid, addr) == 0)
1992 use_addr = addr;
1993 else
1994 return -1;
1995 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1996 settings->encr == NULL || settings->key_hex == NULL)
1997 return -1;
1998
1999 os_memset(&cred, 0, sizeof(cred));
2000 len = os_strlen(settings->ssid_hex);
2001 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
2002 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
2003 return -1;
2004 cred.ssid_len = len / 2;
2005
2006 len = os_strlen(settings->key_hex);
2007 if ((len & 1) || len > 2 * sizeof(cred.key) ||
2008 hexstr2bin(settings->key_hex, cred.key, len / 2))
2009 return -1;
2010 cred.key_len = len / 2;
2011
2012 if (os_strcmp(settings->auth, "OPEN") == 0)
2013 cred.auth_type = WPS_AUTH_OPEN;
2014 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
2015 cred.auth_type = WPS_AUTH_WPAPSK;
2016 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
2017 cred.auth_type = WPS_AUTH_WPA2PSK;
2018 else
2019 return -1;
2020
2021 if (os_strcmp(settings->encr, "NONE") == 0)
2022 cred.encr_type = WPS_ENCR_NONE;
2023 #ifdef CONFIG_TESTING_OPTIONS
2024 else if (os_strcmp(settings->encr, "WEP") == 0)
2025 cred.encr_type = WPS_ENCR_WEP;
2026 #endif /* CONFIG_TESTING_OPTIONS */
2027 else if (os_strcmp(settings->encr, "TKIP") == 0)
2028 cred.encr_type = WPS_ENCR_TKIP;
2029 else if (os_strcmp(settings->encr, "CCMP") == 0)
2030 cred.encr_type = WPS_ENCR_AES;
2031 else
2032 return -1;
2033
2034 return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
2035 (const u8 *) pin, os_strlen(pin), &cred);
2036 }
2037
2038
2039 #ifdef CONFIG_WPS_NFC
wpas_wps_er_nfc_config_token(struct wpa_supplicant * wpa_s,int ndef,const char * uuid)2040 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
2041 int ndef, const char *uuid)
2042 {
2043 struct wpabuf *ret;
2044 u8 u[UUID_LEN], *use_uuid = NULL;
2045 u8 addr[ETH_ALEN], *use_addr = NULL;
2046
2047 if (!wpa_s->wps_er)
2048 return NULL;
2049
2050 if (uuid_str2bin(uuid, u) == 0)
2051 use_uuid = u;
2052 else if (hwaddr_aton(uuid, addr) == 0)
2053 use_addr = addr;
2054 else
2055 return NULL;
2056
2057 ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2058 if (ndef && ret) {
2059 struct wpabuf *tmp;
2060 tmp = ndef_build_wifi(ret);
2061 wpabuf_free(ret);
2062 if (tmp == NULL)
2063 return NULL;
2064 ret = tmp;
2065 }
2066
2067 return ret;
2068 }
2069 #endif /* CONFIG_WPS_NFC */
2070
2071
2072 static int callbacks_pending = 0;
2073
wpas_wps_terminate_cb(void * ctx)2074 static void wpas_wps_terminate_cb(void *ctx)
2075 {
2076 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
2077 if (--callbacks_pending <= 0)
2078 eloop_terminate();
2079 }
2080 #endif /* CONFIG_WPS_ER */
2081
2082
wpas_wps_terminate_pending(struct wpa_supplicant * wpa_s)2083 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
2084 {
2085 #ifdef CONFIG_WPS_ER
2086 if (wpa_s->wps_er) {
2087 callbacks_pending++;
2088 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
2089 wpa_s->wps_er = NULL;
2090 return 1;
2091 }
2092 #endif /* CONFIG_WPS_ER */
2093 return 0;
2094 }
2095
2096
wpas_wps_update_config(struct wpa_supplicant * wpa_s)2097 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
2098 {
2099 struct wps_context *wps = wpa_s->wps;
2100
2101 if (wps == NULL)
2102 return;
2103
2104 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
2105 wps->config_methods = wps_config_methods_str2bin(
2106 wpa_s->conf->config_methods);
2107 if ((wps->config_methods &
2108 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
2109 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
2110 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
2111 "config methods are not allowed at the "
2112 "same time");
2113 wps->config_methods &= ~WPS_CONFIG_LABEL;
2114 }
2115 }
2116 wps->config_methods = wps_fix_config_methods(wps->config_methods);
2117 wps->dev.config_methods = wps->config_methods;
2118
2119 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
2120 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2121 WPS_DEV_TYPE_LEN);
2122
2123 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2124 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2125 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2126 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2127 }
2128
2129 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2130 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2131
2132 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2133 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2134
2135 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2136 wpas_wps_set_uuid(wpa_s, wps);
2137
2138 if (wpa_s->conf->changed_parameters &
2139 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2140 /* Update pointers to make sure they refer current values */
2141 wps->dev.device_name = wpa_s->conf->device_name;
2142 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2143 wps->dev.model_name = wpa_s->conf->model_name;
2144 wps->dev.model_number = wpa_s->conf->model_number;
2145 wps->dev.serial_number = wpa_s->conf->serial_number;
2146 }
2147 }
2148
2149
2150 #ifdef CONFIG_WPS_NFC
2151
2152 #ifdef CONFIG_WPS_ER
2153 static struct wpabuf *
wpas_wps_network_config_token(struct wpa_supplicant * wpa_s,int ndef,struct wpa_ssid * ssid)2154 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2155 struct wpa_ssid *ssid)
2156 {
2157 struct wpabuf *ret;
2158 struct wps_credential cred;
2159
2160 if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2161 return NULL;
2162
2163 ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2164
2165 if (ndef && ret) {
2166 struct wpabuf *tmp;
2167 tmp = ndef_build_wifi(ret);
2168 wpabuf_free(ret);
2169 if (tmp == NULL)
2170 return NULL;
2171 ret = tmp;
2172 }
2173
2174 return ret;
2175 }
2176 #endif /* CONFIG_WPS_ER */
2177
2178
wpas_wps_nfc_config_token(struct wpa_supplicant * wpa_s,int ndef,const char * id_str)2179 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2180 int ndef, const char *id_str)
2181 {
2182 #ifdef CONFIG_WPS_ER
2183 if (id_str) {
2184 int id;
2185 char *end = NULL;
2186 struct wpa_ssid *ssid;
2187
2188 id = strtol(id_str, &end, 10);
2189 if (end && *end)
2190 return NULL;
2191
2192 ssid = wpa_config_get_network(wpa_s->conf, id);
2193 if (ssid == NULL)
2194 return NULL;
2195 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2196 }
2197 #endif /* CONFIG_WPS_ER */
2198 #ifdef CONFIG_AP
2199 if (wpa_s->ap_iface)
2200 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2201 #endif /* CONFIG_AP */
2202 return NULL;
2203 }
2204
2205
wpas_wps_nfc_token(struct wpa_supplicant * wpa_s,int ndef)2206 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2207 {
2208 if (wpa_s->conf->wps_nfc_pw_from_config) {
2209 return wps_nfc_token_build(ndef,
2210 wpa_s->conf->wps_nfc_dev_pw_id,
2211 wpa_s->conf->wps_nfc_dh_pubkey,
2212 wpa_s->conf->wps_nfc_dev_pw);
2213 }
2214
2215 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2216 &wpa_s->conf->wps_nfc_dh_pubkey,
2217 &wpa_s->conf->wps_nfc_dh_privkey,
2218 &wpa_s->conf->wps_nfc_dev_pw);
2219 }
2220
2221
wpas_wps_start_nfc(struct wpa_supplicant * wpa_s,const u8 * go_dev_addr,const u8 * bssid,const struct wpabuf * dev_pw,u16 dev_pw_id,int p2p_group,const u8 * peer_pubkey_hash,const u8 * ssid,size_t ssid_len,int freq)2222 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr,
2223 const u8 *bssid,
2224 const struct wpabuf *dev_pw, u16 dev_pw_id,
2225 int p2p_group, const u8 *peer_pubkey_hash,
2226 const u8 *ssid, size_t ssid_len, int freq)
2227 {
2228 struct wps_context *wps = wpa_s->wps;
2229 char pw[32 * 2 + 1];
2230
2231 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2232 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2233 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2234 }
2235
2236 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2237 wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2238 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2239 "cannot start NFC-triggered connection");
2240 return -1;
2241 }
2242
2243 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2244 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2245 "cannot start NFC-triggered connection", dev_pw_id);
2246 return -1;
2247 }
2248
2249 dh5_free(wps->dh_ctx);
2250 wpabuf_free(wps->dh_pubkey);
2251 wpabuf_free(wps->dh_privkey);
2252 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2253 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2254 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2255 wps->dh_ctx = NULL;
2256 wpabuf_free(wps->dh_pubkey);
2257 wps->dh_pubkey = NULL;
2258 wpabuf_free(wps->dh_privkey);
2259 wps->dh_privkey = NULL;
2260 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2261 return -1;
2262 }
2263 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2264 if (wps->dh_ctx == NULL) {
2265 wpabuf_free(wps->dh_pubkey);
2266 wps->dh_pubkey = NULL;
2267 wpabuf_free(wps->dh_privkey);
2268 wps->dh_privkey = NULL;
2269 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2270 return -1;
2271 }
2272
2273 if (dev_pw) {
2274 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2275 wpabuf_head(dev_pw),
2276 wpabuf_len(dev_pw));
2277 }
2278 return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid,
2279 dev_pw ? pw : NULL,
2280 p2p_group, dev_pw_id, peer_pubkey_hash,
2281 ssid, ssid_len, freq);
2282 }
2283
2284
wpas_wps_use_cred(struct wpa_supplicant * wpa_s,struct wps_parse_attr * attr)2285 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2286 struct wps_parse_attr *attr)
2287 {
2288 /*
2289 * Disable existing networks temporarily to allow the newly learned
2290 * credential to be preferred. Enable the temporarily disabled networks
2291 * after 10 seconds.
2292 */
2293 wpas_wps_temp_disable(wpa_s, NULL);
2294 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2295 NULL);
2296
2297 if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2298 return -1;
2299
2300 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2301 return 0;
2302
2303 if (attr->ap_channel) {
2304 u16 chan = WPA_GET_BE16(attr->ap_channel);
2305 int freq = 0;
2306
2307 if (chan >= 1 && chan <= 13)
2308 freq = 2407 + 5 * chan;
2309 else if (chan == 14)
2310 freq = 2484;
2311 else if (chan >= 30)
2312 freq = 5000 + 5 * chan;
2313
2314 if (freq) {
2315 wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz",
2316 chan, freq);
2317 wpa_s->after_wps = 5;
2318 wpa_s->wps_freq = freq;
2319 }
2320 }
2321
2322 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2323 "based on the received credential added");
2324 wpa_s->normal_scans = 0;
2325 wpa_supplicant_reinit_autoscan(wpa_s);
2326 wpa_s->disconnected = 0;
2327 wpa_s->reassociate = 1;
2328
2329 wpa_supplicant_cancel_sched_scan(wpa_s);
2330 wpa_supplicant_req_scan(wpa_s, 0, 0);
2331
2332 return 0;
2333 }
2334
2335
2336 #ifdef CONFIG_WPS_ER
wpas_wps_add_nfc_password_token(struct wpa_supplicant * wpa_s,struct wps_parse_attr * attr)2337 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2338 struct wps_parse_attr *attr)
2339 {
2340 return wps_registrar_add_nfc_password_token(
2341 wpa_s->wps->registrar, attr->oob_dev_password,
2342 attr->oob_dev_password_len);
2343 }
2344 #endif /* CONFIG_WPS_ER */
2345
2346
wpas_wps_nfc_tag_process(struct wpa_supplicant * wpa_s,const struct wpabuf * wps)2347 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2348 const struct wpabuf *wps)
2349 {
2350 struct wps_parse_attr attr;
2351
2352 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2353
2354 if (wps_parse_msg(wps, &attr)) {
2355 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2356 return -1;
2357 }
2358
2359 if (attr.num_cred)
2360 return wpas_wps_use_cred(wpa_s, &attr);
2361
2362 #ifdef CONFIG_WPS_ER
2363 if (attr.oob_dev_password)
2364 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2365 #endif /* CONFIG_WPS_ER */
2366
2367 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2368 return -1;
2369 }
2370
2371
wpas_wps_nfc_tag_read(struct wpa_supplicant * wpa_s,const struct wpabuf * data,int forced_freq)2372 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2373 const struct wpabuf *data, int forced_freq)
2374 {
2375 const struct wpabuf *wps = data;
2376 struct wpabuf *tmp = NULL;
2377 int ret;
2378
2379 if (wpabuf_len(data) < 4)
2380 return -1;
2381
2382 if (*wpabuf_head_u8(data) != 0x10) {
2383 /* Assume this contains full NDEF record */
2384 tmp = ndef_parse_wifi(data);
2385 if (tmp == NULL) {
2386 #ifdef CONFIG_P2P
2387 tmp = ndef_parse_p2p(data);
2388 if (tmp) {
2389 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp,
2390 forced_freq);
2391 wpabuf_free(tmp);
2392 return ret;
2393 }
2394 #endif /* CONFIG_P2P */
2395 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2396 return -1;
2397 }
2398 wps = tmp;
2399 }
2400
2401 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2402 wpabuf_free(tmp);
2403 return ret;
2404 }
2405
2406
wpas_wps_nfc_handover_req(struct wpa_supplicant * wpa_s,int ndef)2407 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2408 int ndef)
2409 {
2410 struct wpabuf *ret;
2411
2412 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2413 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2414 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2415 return NULL;
2416
2417 ret = wps_build_nfc_handover_req(wpa_s->wps,
2418 wpa_s->conf->wps_nfc_dh_pubkey);
2419
2420 if (ndef && ret) {
2421 struct wpabuf *tmp;
2422 tmp = ndef_build_wifi(ret);
2423 wpabuf_free(ret);
2424 if (tmp == NULL)
2425 return NULL;
2426 ret = tmp;
2427 }
2428
2429 return ret;
2430 }
2431
2432
2433 #ifdef CONFIG_WPS_NFC
2434
2435 static struct wpabuf *
wpas_wps_er_nfc_handover_sel(struct wpa_supplicant * wpa_s,int ndef,const char * uuid)2436 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2437 const char *uuid)
2438 {
2439 #ifdef CONFIG_WPS_ER
2440 struct wpabuf *ret;
2441 u8 u[UUID_LEN], *use_uuid = NULL;
2442 u8 addr[ETH_ALEN], *use_addr = NULL;
2443 struct wps_context *wps = wpa_s->wps;
2444
2445 if (wps == NULL)
2446 return NULL;
2447
2448 if (uuid == NULL)
2449 return NULL;
2450 if (uuid_str2bin(uuid, u) == 0)
2451 use_uuid = u;
2452 else if (hwaddr_aton(uuid, addr) == 0)
2453 use_addr = addr;
2454 else
2455 return NULL;
2456
2457 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2458 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2459 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2460 return NULL;
2461 }
2462
2463 wpas_wps_nfc_clear(wps);
2464 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2465 wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2466 wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2467 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2468 wpas_wps_nfc_clear(wps);
2469 return NULL;
2470 }
2471
2472 ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2473 use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2474 if (ndef && ret) {
2475 struct wpabuf *tmp;
2476 tmp = ndef_build_wifi(ret);
2477 wpabuf_free(ret);
2478 if (tmp == NULL)
2479 return NULL;
2480 ret = tmp;
2481 }
2482
2483 return ret;
2484 #else /* CONFIG_WPS_ER */
2485 return NULL;
2486 #endif /* CONFIG_WPS_ER */
2487 }
2488 #endif /* CONFIG_WPS_NFC */
2489
2490
wpas_wps_nfc_handover_sel(struct wpa_supplicant * wpa_s,int ndef,int cr,const char * uuid)2491 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2492 int ndef, int cr, const char *uuid)
2493 {
2494 struct wpabuf *ret;
2495 if (!cr)
2496 return NULL;
2497 ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2498 if (ret)
2499 return ret;
2500 return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2501 }
2502
2503
wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant * wpa_s,const struct wpabuf * data)2504 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2505 const struct wpabuf *data)
2506 {
2507 struct wpabuf *wps;
2508 int ret = -1;
2509 u16 wsc_len;
2510 const u8 *pos;
2511 struct wpabuf msg;
2512 struct wps_parse_attr attr;
2513 u16 dev_pw_id;
2514 const u8 *bssid = NULL;
2515 int freq = 0;
2516
2517 wps = ndef_parse_wifi(data);
2518 if (wps == NULL)
2519 return -1;
2520 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2521 "payload from NFC connection handover");
2522 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2523 if (wpabuf_len(wps) < 2) {
2524 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2525 "Message");
2526 goto out;
2527 }
2528 pos = wpabuf_head(wps);
2529 wsc_len = WPA_GET_BE16(pos);
2530 if (wsc_len > wpabuf_len(wps) - 2) {
2531 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2532 "in Wi-Fi Handover Select Message", wsc_len);
2533 goto out;
2534 }
2535 pos += 2;
2536
2537 wpa_hexdump(MSG_DEBUG,
2538 "WPS: WSC attributes in Wi-Fi Handover Select Message",
2539 pos, wsc_len);
2540 if (wsc_len < wpabuf_len(wps) - 2) {
2541 wpa_hexdump(MSG_DEBUG,
2542 "WPS: Ignore extra data after WSC attributes",
2543 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2544 }
2545
2546 wpabuf_set(&msg, pos, wsc_len);
2547 ret = wps_parse_msg(&msg, &attr);
2548 if (ret < 0) {
2549 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2550 "Wi-Fi Handover Select Message");
2551 goto out;
2552 }
2553
2554 if (attr.oob_dev_password == NULL ||
2555 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2556 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2557 "included in Wi-Fi Handover Select Message");
2558 ret = -1;
2559 goto out;
2560 }
2561
2562 if (attr.ssid == NULL) {
2563 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2564 "Select Message");
2565 ret = -1;
2566 goto out;
2567 }
2568
2569 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2570
2571 if (attr.mac_addr) {
2572 bssid = attr.mac_addr;
2573 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR,
2574 MAC2STR(bssid));
2575 }
2576
2577 if (attr.rf_bands)
2578 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
2579
2580 if (attr.ap_channel) {
2581 u16 chan = WPA_GET_BE16(attr.ap_channel);
2582
2583 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);
2584
2585 if (chan >= 1 && chan <= 13 &&
2586 (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ))
2587 freq = 2407 + 5 * chan;
2588 else if (chan == 14 &&
2589 (attr.rf_bands == NULL ||
2590 *attr.rf_bands & WPS_RF_24GHZ))
2591 freq = 2484;
2592 else if (chan >= 30 &&
2593 (attr.rf_bands == NULL ||
2594 *attr.rf_bands & WPS_RF_50GHZ))
2595 freq = 5000 + 5 * chan;
2596 else if (chan >= 1 && chan <= 4 &&
2597 (attr.rf_bands == NULL ||
2598 *attr.rf_bands & WPS_RF_60GHZ))
2599 freq = 56160 + 2160 * chan;
2600
2601 if (freq) {
2602 wpa_printf(MSG_DEBUG,
2603 "WPS: AP indicated channel %u -> %u MHz",
2604 chan, freq);
2605 }
2606 }
2607
2608 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2609 attr.oob_dev_password, attr.oob_dev_password_len);
2610 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2611 WPS_OOB_PUBKEY_HASH_LEN);
2612 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2613 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2614 "%u in Wi-Fi Handover Select Message", dev_pw_id);
2615 ret = -1;
2616 goto out;
2617 }
2618 wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2619 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2620
2621 ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0,
2622 attr.oob_dev_password,
2623 attr.ssid, attr.ssid_len, freq);
2624
2625 out:
2626 wpabuf_free(wps);
2627 return ret;
2628 }
2629
2630
wpas_wps_nfc_report_handover(struct wpa_supplicant * wpa_s,const struct wpabuf * req,const struct wpabuf * sel)2631 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2632 const struct wpabuf *req,
2633 const struct wpabuf *sel)
2634 {
2635 wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2636 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2637 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2638 return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2639 }
2640
2641
wpas_er_wps_nfc_report_handover(struct wpa_supplicant * wpa_s,const struct wpabuf * req,const struct wpabuf * sel)2642 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2643 const struct wpabuf *req,
2644 const struct wpabuf *sel)
2645 {
2646 struct wpabuf *wps;
2647 int ret = -1;
2648 u16 wsc_len;
2649 const u8 *pos;
2650 struct wpabuf msg;
2651 struct wps_parse_attr attr;
2652 u16 dev_pw_id;
2653
2654 /*
2655 * Enrollee/station is always initiator of the NFC connection handover,
2656 * so use the request message here to find Enrollee public key hash.
2657 */
2658 wps = ndef_parse_wifi(req);
2659 if (wps == NULL)
2660 return -1;
2661 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2662 "payload from NFC connection handover");
2663 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2664 if (wpabuf_len(wps) < 2) {
2665 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2666 "Message");
2667 goto out;
2668 }
2669 pos = wpabuf_head(wps);
2670 wsc_len = WPA_GET_BE16(pos);
2671 if (wsc_len > wpabuf_len(wps) - 2) {
2672 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2673 "in rt Wi-Fi Handover Request Message", wsc_len);
2674 goto out;
2675 }
2676 pos += 2;
2677
2678 wpa_hexdump(MSG_DEBUG,
2679 "WPS: WSC attributes in Wi-Fi Handover Request Message",
2680 pos, wsc_len);
2681 if (wsc_len < wpabuf_len(wps) - 2) {
2682 wpa_hexdump(MSG_DEBUG,
2683 "WPS: Ignore extra data after WSC attributes",
2684 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2685 }
2686
2687 wpabuf_set(&msg, pos, wsc_len);
2688 ret = wps_parse_msg(&msg, &attr);
2689 if (ret < 0) {
2690 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2691 "Wi-Fi Handover Request Message");
2692 goto out;
2693 }
2694
2695 if (attr.oob_dev_password == NULL ||
2696 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2697 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2698 "included in Wi-Fi Handover Request Message");
2699 ret = -1;
2700 goto out;
2701 }
2702
2703 if (attr.uuid_e == NULL) {
2704 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2705 "Handover Request Message");
2706 ret = -1;
2707 goto out;
2708 }
2709
2710 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2711
2712 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2713 attr.oob_dev_password, attr.oob_dev_password_len);
2714 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2715 WPS_OOB_PUBKEY_HASH_LEN);
2716 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2717 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2718 "%u in Wi-Fi Handover Request Message", dev_pw_id);
2719 ret = -1;
2720 goto out;
2721 }
2722 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2723 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2724
2725 ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2726 attr.oob_dev_password,
2727 DEV_PW_NFC_CONNECTION_HANDOVER,
2728 NULL, 0, 1);
2729
2730 out:
2731 wpabuf_free(wps);
2732 return ret;
2733 }
2734
2735 #endif /* CONFIG_WPS_NFC */
2736
2737
wpas_wps_dump_ap_info(struct wpa_supplicant * wpa_s)2738 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2739 {
2740 size_t i;
2741 struct os_reltime now;
2742
2743 if (wpa_debug_level > MSG_DEBUG)
2744 return;
2745
2746 if (wpa_s->wps_ap == NULL)
2747 return;
2748
2749 os_get_reltime(&now);
2750
2751 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2752 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2753 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2754
2755 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2756 "tries=%d last_attempt=%d sec ago blacklist=%d",
2757 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2758 ap->last_attempt.sec > 0 ?
2759 (int) now.sec - (int) ap->last_attempt.sec : -1,
2760 e ? e->count : 0);
2761 }
2762 }
2763
2764
wpas_wps_get_ap_info(struct wpa_supplicant * wpa_s,const u8 * bssid)2765 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2766 const u8 *bssid)
2767 {
2768 size_t i;
2769
2770 if (wpa_s->wps_ap == NULL)
2771 return NULL;
2772
2773 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2774 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2775 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2776 return ap;
2777 }
2778
2779 return NULL;
2780 }
2781
2782
wpas_wps_update_ap_info_bss(struct wpa_supplicant * wpa_s,struct wpa_scan_res * res)2783 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2784 struct wpa_scan_res *res)
2785 {
2786 struct wpabuf *wps;
2787 enum wps_ap_info_type type;
2788 struct wps_ap_info *ap;
2789 int r, pbc_active;
2790 const u8 *uuid;
2791
2792 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2793 return;
2794
2795 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2796 if (wps == NULL)
2797 return;
2798
2799 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2800 if (r == 2)
2801 type = WPS_AP_SEL_REG_OUR;
2802 else if (r == 1)
2803 type = WPS_AP_SEL_REG;
2804 else
2805 type = WPS_AP_NOT_SEL_REG;
2806
2807 uuid = wps_get_uuid_e(wps);
2808 pbc_active = wps_is_selected_pbc_registrar(wps);
2809
2810 ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2811 if (ap) {
2812 if (ap->type != type) {
2813 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2814 " changed type %d -> %d",
2815 MAC2STR(res->bssid), ap->type, type);
2816 ap->type = type;
2817 if (type != WPS_AP_NOT_SEL_REG)
2818 wpa_blacklist_del(wpa_s, ap->bssid);
2819 }
2820 ap->pbc_active = pbc_active;
2821 if (uuid)
2822 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2823 goto out;
2824 }
2825
2826 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2827 sizeof(struct wps_ap_info));
2828 if (ap == NULL)
2829 goto out;
2830
2831 wpa_s->wps_ap = ap;
2832 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2833 wpa_s->num_wps_ap++;
2834
2835 os_memset(ap, 0, sizeof(*ap));
2836 os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2837 ap->type = type;
2838 ap->pbc_active = pbc_active;
2839 if (uuid)
2840 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2841 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2842 MAC2STR(ap->bssid), ap->type);
2843
2844 out:
2845 wpabuf_free(wps);
2846 }
2847
2848
wpas_wps_update_ap_info(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)2849 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2850 struct wpa_scan_results *scan_res)
2851 {
2852 size_t i;
2853
2854 for (i = 0; i < scan_res->num; i++)
2855 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2856
2857 wpas_wps_dump_ap_info(wpa_s);
2858 }
2859
2860
wpas_wps_notify_assoc(struct wpa_supplicant * wpa_s,const u8 * bssid)2861 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2862 {
2863 struct wps_ap_info *ap;
2864
2865 wpa_s->after_wps = 0;
2866
2867 if (!wpa_s->wps_ap_iter)
2868 return;
2869 ap = wpas_wps_get_ap_info(wpa_s, bssid);
2870 if (ap == NULL)
2871 return;
2872 ap->tries++;
2873 os_get_reltime(&ap->last_attempt);
2874 }
2875