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->p2pdev && wpa_s->p2pdev != wpa_s) {
587 wpa_msg(wpa_s->p2pdev, 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->p2pdev && wpa_s->p2pdev != wpa_s)
621 wpa_msg(wpa_s->p2pdev, 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->p2pdev && wpa_s->p2pdev != wpa_s)
631 wpa_msg(wpa_s->p2pdev, 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
wpas_wps_reenable_networks_pending(struct wpa_supplicant * wpa_s)686 int wpas_wps_reenable_networks_pending(struct wpa_supplicant *wpa_s)
687 {
688 return eloop_is_timeout_registered(wpas_wps_reenable_networks_cb,
689 wpa_s, NULL);
690 }
691
692
wpa_supplicant_wps_event_success(struct wpa_supplicant * wpa_s)693 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
694 {
695 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
696 wpa_s->wps_success = 1;
697 wpas_notify_wps_event_success(wpa_s);
698 if (wpa_s->current_ssid)
699 wpas_clear_temp_disabled(wpa_s, wpa_s->current_ssid, 1);
700 wpa_s->extra_blacklist_count = 0;
701
702 /*
703 * Enable the networks disabled during wpas_wps_reassoc after 10
704 * seconds. The 10 seconds timer is to allow the data connection to be
705 * formed before allowing other networks to be selected.
706 */
707 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
708 NULL);
709
710 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
711 }
712
713
wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant * wpa_s,struct wps_event_er_ap * ap)714 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
715 struct wps_event_er_ap *ap)
716 {
717 char uuid_str[100];
718 char dev_type[WPS_DEV_TYPE_BUFSIZE];
719
720 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
721 if (ap->pri_dev_type)
722 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
723 sizeof(dev_type));
724 else
725 dev_type[0] = '\0';
726
727 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
728 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
729 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
730 ap->friendly_name ? ap->friendly_name : "",
731 ap->manufacturer ? ap->manufacturer : "",
732 ap->model_description ? ap->model_description : "",
733 ap->model_name ? ap->model_name : "",
734 ap->manufacturer_url ? ap->manufacturer_url : "",
735 ap->model_url ? ap->model_url : "");
736 }
737
738
wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant * wpa_s,struct wps_event_er_ap * ap)739 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
740 struct wps_event_er_ap *ap)
741 {
742 char uuid_str[100];
743 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
744 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
745 }
746
747
wpa_supplicant_wps_event_er_enrollee_add(struct wpa_supplicant * wpa_s,struct wps_event_er_enrollee * enrollee)748 static void wpa_supplicant_wps_event_er_enrollee_add(
749 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
750 {
751 char uuid_str[100];
752 char dev_type[WPS_DEV_TYPE_BUFSIZE];
753
754 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
755 if (enrollee->pri_dev_type)
756 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
757 sizeof(dev_type));
758 else
759 dev_type[0] = '\0';
760
761 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
762 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
763 "|%s|%s|%s|%s|%s|",
764 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
765 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
766 enrollee->dev_name ? enrollee->dev_name : "",
767 enrollee->manufacturer ? enrollee->manufacturer : "",
768 enrollee->model_name ? enrollee->model_name : "",
769 enrollee->model_number ? enrollee->model_number : "",
770 enrollee->serial_number ? enrollee->serial_number : "");
771 }
772
773
wpa_supplicant_wps_event_er_enrollee_remove(struct wpa_supplicant * wpa_s,struct wps_event_er_enrollee * enrollee)774 static void wpa_supplicant_wps_event_er_enrollee_remove(
775 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
776 {
777 char uuid_str[100];
778 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
779 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
780 uuid_str, MAC2STR(enrollee->mac_addr));
781 }
782
783
wpa_supplicant_wps_event_er_ap_settings(struct wpa_supplicant * wpa_s,struct wps_event_er_ap_settings * ap_settings)784 static void wpa_supplicant_wps_event_er_ap_settings(
785 struct wpa_supplicant *wpa_s,
786 struct wps_event_er_ap_settings *ap_settings)
787 {
788 char uuid_str[100];
789 char key_str[65];
790 const struct wps_credential *cred = ap_settings->cred;
791
792 key_str[0] = '\0';
793 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
794 if (cred->key_len >= 8 && cred->key_len <= 64) {
795 os_memcpy(key_str, cred->key, cred->key_len);
796 key_str[cred->key_len] = '\0';
797 }
798 }
799
800 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
801 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
802 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
803 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
804 "key=%s",
805 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
806 cred->auth_type, cred->encr_type, key_str);
807 }
808
809
wpa_supplicant_wps_event_er_set_sel_reg(struct wpa_supplicant * wpa_s,struct wps_event_er_set_selected_registrar * ev)810 static void wpa_supplicant_wps_event_er_set_sel_reg(
811 struct wpa_supplicant *wpa_s,
812 struct wps_event_er_set_selected_registrar *ev)
813 {
814 char uuid_str[100];
815
816 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
817 switch (ev->state) {
818 case WPS_ER_SET_SEL_REG_START:
819 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
820 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
821 "sel_reg_config_methods=0x%x",
822 uuid_str, ev->sel_reg, ev->dev_passwd_id,
823 ev->sel_reg_config_methods);
824 break;
825 case WPS_ER_SET_SEL_REG_DONE:
826 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
827 "uuid=%s state=DONE", uuid_str);
828 break;
829 case WPS_ER_SET_SEL_REG_FAILED:
830 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
831 "uuid=%s state=FAILED", uuid_str);
832 break;
833 }
834 }
835
836
wpa_supplicant_wps_event(void * ctx,enum wps_event event,union wps_event_data * data)837 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
838 union wps_event_data *data)
839 {
840 struct wpa_supplicant *wpa_s = ctx;
841 switch (event) {
842 case WPS_EV_M2D:
843 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
844 break;
845 case WPS_EV_FAIL:
846 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
847 break;
848 case WPS_EV_SUCCESS:
849 wpa_supplicant_wps_event_success(wpa_s);
850 break;
851 case WPS_EV_PWD_AUTH_FAIL:
852 #ifdef CONFIG_AP
853 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
854 wpa_supplicant_ap_pwd_auth_fail(wpa_s);
855 #endif /* CONFIG_AP */
856 break;
857 case WPS_EV_PBC_OVERLAP:
858 break;
859 case WPS_EV_PBC_TIMEOUT:
860 break;
861 case WPS_EV_PBC_ACTIVE:
862 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ACTIVE);
863 break;
864 case WPS_EV_PBC_DISABLE:
865 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_DISABLE);
866 break;
867 case WPS_EV_ER_AP_ADD:
868 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
869 break;
870 case WPS_EV_ER_AP_REMOVE:
871 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
872 break;
873 case WPS_EV_ER_ENROLLEE_ADD:
874 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
875 &data->enrollee);
876 break;
877 case WPS_EV_ER_ENROLLEE_REMOVE:
878 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
879 &data->enrollee);
880 break;
881 case WPS_EV_ER_AP_SETTINGS:
882 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
883 &data->ap_settings);
884 break;
885 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
886 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
887 &data->set_sel_reg);
888 break;
889 case WPS_EV_AP_PIN_SUCCESS:
890 break;
891 }
892 }
893
894
wpa_supplicant_wps_rf_band(void * ctx)895 static int wpa_supplicant_wps_rf_band(void *ctx)
896 {
897 struct wpa_supplicant *wpa_s = ctx;
898
899 if (!wpa_s->current_ssid || !wpa_s->assoc_freq)
900 return 0;
901
902 return (wpa_s->assoc_freq > 50000) ? WPS_RF_60GHZ :
903 (wpa_s->assoc_freq > 2484) ? WPS_RF_50GHZ : WPS_RF_24GHZ;
904 }
905
906
wpas_wps_get_req_type(struct wpa_ssid * ssid)907 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
908 {
909 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
910 eap_is_wps_pin_enrollee(&ssid->eap))
911 return WPS_REQ_ENROLLEE;
912 else
913 return WPS_REQ_REGISTRAR;
914 }
915
916
wpas_clear_wps(struct wpa_supplicant * wpa_s)917 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
918 {
919 int id;
920 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
921
922 wpa_s->after_wps = 0;
923 wpa_s->known_wps_freq = 0;
924
925 prev_current = wpa_s->current_ssid;
926
927 /* Enable the networks disabled during wpas_wps_reassoc */
928 wpas_wps_reenable_networks(wpa_s);
929
930 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
931 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
932
933 /* Remove any existing WPS network from configuration */
934 ssid = wpa_s->conf->ssid;
935 while (ssid) {
936 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
937 if (ssid == wpa_s->current_ssid) {
938 wpa_s->own_disconnect_req = 1;
939 wpa_supplicant_deauthenticate(
940 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
941 }
942 id = ssid->id;
943 remove_ssid = ssid;
944 } else
945 id = -1;
946 ssid = ssid->next;
947 if (id >= 0) {
948 if (prev_current == remove_ssid) {
949 wpa_sm_set_config(wpa_s->wpa, NULL);
950 eapol_sm_notify_config(wpa_s->eapol, NULL,
951 NULL);
952 }
953 wpas_notify_network_removed(wpa_s, remove_ssid);
954 wpa_config_remove_network(wpa_s->conf, id);
955 }
956 }
957
958 wpas_wps_clear_ap_info(wpa_s);
959 }
960
961
wpas_wps_timeout(void * eloop_ctx,void * timeout_ctx)962 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
963 {
964 struct wpa_supplicant *wpa_s = eloop_ctx;
965 union wps_event_data data;
966
967 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
968 "out");
969 os_memset(&data, 0, sizeof(data));
970 data.fail.config_error = WPS_CFG_MSG_TIMEOUT;
971 data.fail.error_indication = WPS_EI_NO_ERROR;
972 /*
973 * Call wpas_notify_wps_event_fail() directly instead of through
974 * wpa_supplicant_wps_event() which would end up registering unnecessary
975 * timeouts (those are only for the case where the failure happens
976 * during an EAP-WSC exchange).
977 */
978 wpas_notify_wps_event_fail(wpa_s, &data.fail);
979 wpas_clear_wps(wpa_s);
980 }
981
982
wpas_wps_add_network(struct wpa_supplicant * wpa_s,int registrar,const u8 * dev_addr,const u8 * bssid)983 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
984 int registrar, const u8 *dev_addr,
985 const u8 *bssid)
986 {
987 struct wpa_ssid *ssid;
988
989 ssid = wpa_config_add_network(wpa_s->conf);
990 if (ssid == NULL)
991 return NULL;
992 wpas_notify_network_added(wpa_s, ssid);
993 wpa_config_set_network_defaults(ssid);
994 ssid->temporary = 1;
995 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
996 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
997 wpa_config_set(ssid, "identity", registrar ?
998 "\"" WSC_ID_REGISTRAR "\"" :
999 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
1000 wpas_notify_network_removed(wpa_s, ssid);
1001 wpa_config_remove_network(wpa_s->conf, ssid->id);
1002 return NULL;
1003 }
1004
1005 #ifdef CONFIG_P2P
1006 if (dev_addr)
1007 os_memcpy(ssid->go_p2p_dev_addr, dev_addr, ETH_ALEN);
1008 #endif /* CONFIG_P2P */
1009
1010 if (bssid) {
1011 #ifndef CONFIG_P2P
1012 struct wpa_bss *bss;
1013 int count = 0;
1014 #endif /* CONFIG_P2P */
1015
1016 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
1017 ssid->bssid_set = 1;
1018
1019 /*
1020 * Note: With P2P, the SSID may change at the time the WPS
1021 * provisioning is started, so better not filter the AP based
1022 * on the current SSID in the scan results.
1023 */
1024 #ifndef CONFIG_P2P
1025 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1026 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
1027 continue;
1028
1029 os_free(ssid->ssid);
1030 ssid->ssid = os_malloc(bss->ssid_len);
1031 if (ssid->ssid == NULL)
1032 break;
1033 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1034 ssid->ssid_len = bss->ssid_len;
1035 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
1036 "scan results",
1037 ssid->ssid, ssid->ssid_len);
1038 count++;
1039 }
1040
1041 if (count > 1) {
1042 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
1043 "for the AP; use wildcard");
1044 os_free(ssid->ssid);
1045 ssid->ssid = NULL;
1046 ssid->ssid_len = 0;
1047 }
1048 #endif /* CONFIG_P2P */
1049 }
1050
1051 return ssid;
1052 }
1053
1054
wpas_wps_temp_disable(struct wpa_supplicant * wpa_s,struct wpa_ssid * selected)1055 static void wpas_wps_temp_disable(struct wpa_supplicant *wpa_s,
1056 struct wpa_ssid *selected)
1057 {
1058 struct wpa_ssid *ssid;
1059
1060 if (wpa_s->current_ssid) {
1061 wpa_s->own_disconnect_req = 1;
1062 wpa_supplicant_deauthenticate(
1063 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1064 }
1065
1066 /* Mark all other networks disabled and trigger reassociation */
1067 ssid = wpa_s->conf->ssid;
1068 while (ssid) {
1069 int was_disabled = ssid->disabled;
1070 ssid->disabled_for_connect = 0;
1071 /*
1072 * In case the network object corresponds to a persistent group
1073 * then do not send out network disabled signal. In addition,
1074 * do not change disabled status of persistent network objects
1075 * from 2 to 1 should we connect to another network.
1076 */
1077 if (was_disabled != 2) {
1078 ssid->disabled = ssid != selected;
1079 if (was_disabled != ssid->disabled) {
1080 if (ssid->disabled)
1081 ssid->disabled_for_connect = 1;
1082 wpas_notify_network_enabled_changed(wpa_s,
1083 ssid);
1084 }
1085 }
1086 ssid = ssid->next;
1087 }
1088 }
1089
1090
wpas_wps_reassoc(struct wpa_supplicant * wpa_s,struct wpa_ssid * selected,const u8 * bssid,int freq)1091 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
1092 struct wpa_ssid *selected, const u8 *bssid,
1093 int freq)
1094 {
1095 struct wpa_bss *bss;
1096
1097 wpa_s->wps_run++;
1098 if (wpa_s->wps_run == 0)
1099 wpa_s->wps_run++;
1100 wpa_s->after_wps = 0;
1101 wpa_s->known_wps_freq = 0;
1102 if (freq) {
1103 wpa_s->after_wps = 5;
1104 wpa_s->wps_freq = freq;
1105 } else if (bssid) {
1106 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
1107 if (bss && bss->freq > 0) {
1108 wpa_s->known_wps_freq = 1;
1109 wpa_s->wps_freq = bss->freq;
1110 }
1111 }
1112
1113 wpas_wps_temp_disable(wpa_s, selected);
1114
1115 wpa_s->disconnected = 0;
1116 wpa_s->reassociate = 1;
1117 wpa_s->scan_runs = 0;
1118 wpa_s->normal_scans = 0;
1119 wpa_s->wps_success = 0;
1120 wpa_s->blacklist_cleared = 0;
1121
1122 wpa_supplicant_cancel_sched_scan(wpa_s);
1123 wpa_supplicant_req_scan(wpa_s, 0, 0);
1124 }
1125
1126
wpas_wps_start_pbc(struct wpa_supplicant * wpa_s,const u8 * bssid,int p2p_group)1127 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
1128 int p2p_group)
1129 {
1130 struct wpa_ssid *ssid;
1131
1132 #ifdef CONFIG_AP
1133 if (wpa_s->ap_iface) {
1134 wpa_printf(MSG_DEBUG,
1135 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1136 return -1;
1137 }
1138 #endif /* CONFIG_AP */
1139 wpas_clear_wps(wpa_s);
1140 ssid = wpas_wps_add_network(wpa_s, 0, NULL, bssid);
1141 if (ssid == NULL)
1142 return -1;
1143 ssid->temporary = 1;
1144 ssid->p2p_group = p2p_group;
1145 #ifdef CONFIG_P2P
1146 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1147 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1148 if (ssid->ssid) {
1149 ssid->ssid_len = wpa_s->go_params->ssid_len;
1150 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1151 ssid->ssid_len);
1152 if (wpa_s->go_params->freq > 56160) {
1153 /* P2P in 60 GHz uses PBSS */
1154 ssid->pbss = 1;
1155 }
1156 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1157 "SSID", ssid->ssid, ssid->ssid_len);
1158 }
1159 }
1160 #endif /* CONFIG_P2P */
1161 if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
1162 return -1;
1163 if (wpa_s->wps_fragment_size)
1164 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1165 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1166 wpa_s, NULL);
1167 wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1168 return 0;
1169 }
1170
1171
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)1172 static int wpas_wps_start_dev_pw(struct wpa_supplicant *wpa_s,
1173 const u8 *dev_addr, const u8 *bssid,
1174 const char *pin, int p2p_group, u16 dev_pw_id,
1175 const u8 *peer_pubkey_hash,
1176 const u8 *ssid_val, size_t ssid_len, int freq)
1177 {
1178 struct wpa_ssid *ssid;
1179 char val[128 + 2 * WPS_OOB_PUBKEY_HASH_LEN];
1180 unsigned int rpin = 0;
1181 char hash[2 * WPS_OOB_PUBKEY_HASH_LEN + 10];
1182
1183 #ifdef CONFIG_AP
1184 if (wpa_s->ap_iface) {
1185 wpa_printf(MSG_DEBUG,
1186 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1187 return -1;
1188 }
1189 #endif /* CONFIG_AP */
1190 wpas_clear_wps(wpa_s);
1191 if (bssid && is_zero_ether_addr(bssid))
1192 bssid = NULL;
1193 ssid = wpas_wps_add_network(wpa_s, 0, dev_addr, bssid);
1194 if (ssid == NULL) {
1195 wpa_printf(MSG_DEBUG, "WPS: Could not add network");
1196 return -1;
1197 }
1198 ssid->temporary = 1;
1199 ssid->p2p_group = p2p_group;
1200 if (ssid_val) {
1201 ssid->ssid = os_malloc(ssid_len);
1202 if (ssid->ssid) {
1203 os_memcpy(ssid->ssid, ssid_val, ssid_len);
1204 ssid->ssid_len = ssid_len;
1205 }
1206 }
1207 if (peer_pubkey_hash) {
1208 os_memcpy(hash, " pkhash=", 8);
1209 wpa_snprintf_hex_uppercase(hash + 8, sizeof(hash) - 8,
1210 peer_pubkey_hash,
1211 WPS_OOB_PUBKEY_HASH_LEN);
1212 } else {
1213 hash[0] = '\0';
1214 }
1215 #ifdef CONFIG_P2P
1216 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
1217 os_free(ssid->ssid);
1218 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
1219 if (ssid->ssid) {
1220 ssid->ssid_len = wpa_s->go_params->ssid_len;
1221 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
1222 ssid->ssid_len);
1223 if (wpa_s->go_params->freq > 56160) {
1224 /* P2P in 60 GHz uses PBSS */
1225 ssid->pbss = 1;
1226 }
1227 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
1228 "SSID", ssid->ssid, ssid->ssid_len);
1229 }
1230 }
1231 #endif /* CONFIG_P2P */
1232 if (pin)
1233 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u%s\"",
1234 pin, dev_pw_id, hash);
1235 else if (pin == NULL && dev_pw_id == DEV_PW_NFC_CONNECTION_HANDOVER) {
1236 os_snprintf(val, sizeof(val), "\"dev_pw_id=%u%s\"",
1237 dev_pw_id, hash);
1238 } else {
1239 if (wps_generate_pin(&rpin) < 0) {
1240 wpa_printf(MSG_DEBUG, "WPS: Could not generate PIN");
1241 return -1;
1242 }
1243 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u%s\"",
1244 rpin, dev_pw_id, hash);
1245 }
1246 if (wpa_config_set(ssid, "phase1", val, 0) < 0) {
1247 wpa_printf(MSG_DEBUG, "WPS: Failed to set phase1 '%s'", val);
1248 return -1;
1249 }
1250 if (wpa_s->wps_fragment_size)
1251 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1252 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1253 wpa_s, NULL);
1254 wpa_s->wps_ap_iter = 1;
1255 wpas_wps_reassoc(wpa_s, ssid, bssid, freq);
1256 return rpin;
1257 }
1258
1259
wpas_wps_start_pin(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * pin,int p2p_group,u16 dev_pw_id)1260 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
1261 const char *pin, int p2p_group, u16 dev_pw_id)
1262 {
1263 os_get_reltime(&wpa_s->wps_pin_start_time);
1264 return wpas_wps_start_dev_pw(wpa_s, NULL, bssid, pin, p2p_group,
1265 dev_pw_id, NULL, NULL, 0, 0);
1266 }
1267
1268
wpas_wps_pbc_overlap(struct wpa_supplicant * wpa_s)1269 void wpas_wps_pbc_overlap(struct wpa_supplicant *wpa_s)
1270 {
1271 union wps_event_data data;
1272
1273 os_memset(&data, 0, sizeof(data));
1274 data.fail.config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
1275 data.fail.error_indication = WPS_EI_NO_ERROR;
1276 /*
1277 * Call wpas_notify_wps_event_fail() directly instead of through
1278 * wpa_supplicant_wps_event() which would end up registering unnecessary
1279 * timeouts (those are only for the case where the failure happens
1280 * during an EAP-WSC exchange).
1281 */
1282 wpas_notify_wps_event_fail(wpa_s, &data.fail);
1283 }
1284
1285 /* Cancel the wps pbc/pin requests */
wpas_wps_cancel(struct wpa_supplicant * wpa_s)1286 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
1287 {
1288 #ifdef CONFIG_AP
1289 if (wpa_s->ap_iface) {
1290 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1291 return wpa_supplicant_ap_wps_cancel(wpa_s);
1292 }
1293 #endif /* CONFIG_AP */
1294
1295 if (wpa_s->wpa_state == WPA_SCANNING ||
1296 wpa_s->wpa_state == WPA_DISCONNECTED) {
1297 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1298 wpa_supplicant_cancel_scan(wpa_s);
1299 wpas_clear_wps(wpa_s);
1300 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1301 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1302 "deauthenticate");
1303 wpa_s->own_disconnect_req = 1;
1304 wpa_supplicant_deauthenticate(wpa_s,
1305 WLAN_REASON_DEAUTH_LEAVING);
1306 wpas_clear_wps(wpa_s);
1307 } else {
1308 wpas_wps_reenable_networks(wpa_s);
1309 wpas_wps_clear_ap_info(wpa_s);
1310 if (eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL) >
1311 0)
1312 wpas_clear_wps(wpa_s);
1313 }
1314
1315 wpa_s->after_wps = 0;
1316
1317 return 0;
1318 }
1319
1320
wpas_wps_start_reg(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * pin,struct wps_new_ap_settings * settings)1321 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1322 const char *pin, struct wps_new_ap_settings *settings)
1323 {
1324 struct wpa_ssid *ssid;
1325 char val[200];
1326 char *pos, *end;
1327 int res;
1328
1329 #ifdef CONFIG_AP
1330 if (wpa_s->ap_iface) {
1331 wpa_printf(MSG_DEBUG,
1332 "WPS: Reject request to start Registrar(as station) operation while AP mode is enabled");
1333 return -1;
1334 }
1335 #endif /* CONFIG_AP */
1336 if (!pin)
1337 return -1;
1338 wpas_clear_wps(wpa_s);
1339 ssid = wpas_wps_add_network(wpa_s, 1, NULL, bssid);
1340 if (ssid == NULL)
1341 return -1;
1342 ssid->temporary = 1;
1343 pos = val;
1344 end = pos + sizeof(val);
1345 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1346 if (os_snprintf_error(end - pos, res))
1347 return -1;
1348 pos += res;
1349 if (settings) {
1350 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1351 "new_encr=%s new_key=%s",
1352 settings->ssid_hex, settings->auth,
1353 settings->encr, settings->key_hex);
1354 if (os_snprintf_error(end - pos, res))
1355 return -1;
1356 pos += res;
1357 }
1358 res = os_snprintf(pos, end - pos, "\"");
1359 if (os_snprintf_error(end - pos, res))
1360 return -1;
1361 if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1362 return -1;
1363 if (wpa_s->wps_fragment_size)
1364 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1365 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1366 wpa_s, NULL);
1367 wpas_wps_reassoc(wpa_s, ssid, bssid, 0);
1368 return 0;
1369 }
1370
1371
wpas_wps_new_psk_cb(void * ctx,const u8 * mac_addr,const u8 * p2p_dev_addr,const u8 * psk,size_t psk_len)1372 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
1373 const u8 *p2p_dev_addr, const u8 *psk,
1374 size_t psk_len)
1375 {
1376 if (is_zero_ether_addr(p2p_dev_addr)) {
1377 wpa_printf(MSG_DEBUG,
1378 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
1379 MAC2STR(mac_addr));
1380 } else {
1381 wpa_printf(MSG_DEBUG,
1382 "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
1383 " P2P Device Addr " MACSTR,
1384 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
1385 }
1386 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1387
1388 /* TODO */
1389
1390 return 0;
1391 }
1392
1393
wpas_wps_pin_needed_cb(void * ctx,const u8 * uuid_e,const struct wps_device_data * dev)1394 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1395 const struct wps_device_data *dev)
1396 {
1397 char uuid[40], txt[400];
1398 int len;
1399 char devtype[WPS_DEV_TYPE_BUFSIZE];
1400 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1401 return;
1402 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1403 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1404 " [%s|%s|%s|%s|%s|%s]",
1405 uuid, MAC2STR(dev->mac_addr), dev->device_name,
1406 dev->manufacturer, dev->model_name,
1407 dev->model_number, dev->serial_number,
1408 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1409 sizeof(devtype)));
1410 if (!os_snprintf_error(sizeof(txt), len))
1411 wpa_printf(MSG_INFO, "%s", txt);
1412 }
1413
1414
wpas_wps_set_sel_reg_cb(void * ctx,int sel_reg,u16 dev_passwd_id,u16 sel_reg_config_methods)1415 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1416 u16 sel_reg_config_methods)
1417 {
1418 #ifdef CONFIG_WPS_ER
1419 struct wpa_supplicant *wpa_s = ctx;
1420
1421 if (wpa_s->wps_er == NULL)
1422 return;
1423 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1424 "dev_password_id=%u sel_reg_config_methods=0x%x",
1425 sel_reg, dev_passwd_id, sel_reg_config_methods);
1426 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1427 sel_reg_config_methods);
1428 #endif /* CONFIG_WPS_ER */
1429 }
1430
1431
wps_fix_config_methods(u16 config_methods)1432 static u16 wps_fix_config_methods(u16 config_methods)
1433 {
1434 if ((config_methods &
1435 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1436 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1437 wpa_printf(MSG_INFO, "WPS: Converting display to "
1438 "virtual_display for WPS 2.0 compliance");
1439 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1440 }
1441 if ((config_methods &
1442 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1443 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1444 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1445 "virtual_push_button for WPS 2.0 compliance");
1446 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1447 }
1448
1449 return config_methods;
1450 }
1451
1452
wpas_wps_set_uuid(struct wpa_supplicant * wpa_s,struct wps_context * wps)1453 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1454 struct wps_context *wps)
1455 {
1456 char buf[50];
1457 const char *src;
1458
1459 if (is_nil_uuid(wpa_s->conf->uuid)) {
1460 struct wpa_supplicant *first;
1461 first = wpa_s->global->ifaces;
1462 while (first && first->next)
1463 first = first->next;
1464 if (first && first != wpa_s) {
1465 if (wps != wpa_s->global->ifaces->wps)
1466 os_memcpy(wps->uuid,
1467 wpa_s->global->ifaces->wps->uuid,
1468 WPS_UUID_LEN);
1469 src = "from the first interface";
1470 } else {
1471 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1472 src = "based on MAC address";
1473 }
1474 } else {
1475 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1476 src = "based on configuration";
1477 }
1478
1479 uuid_bin2str(wps->uuid, buf, sizeof(buf));
1480 wpa_dbg(wpa_s, MSG_DEBUG, "WPS: UUID %s: %s", src, buf);
1481 }
1482
1483
wpas_wps_set_vendor_ext_m1(struct wpa_supplicant * wpa_s,struct wps_context * wps)1484 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1485 struct wps_context *wps)
1486 {
1487 wpabuf_free(wps->dev.vendor_ext_m1);
1488 wps->dev.vendor_ext_m1 = NULL;
1489
1490 if (wpa_s->conf->wps_vendor_ext_m1) {
1491 wps->dev.vendor_ext_m1 =
1492 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1493 if (!wps->dev.vendor_ext_m1) {
1494 wpa_printf(MSG_ERROR, "WPS: Cannot "
1495 "allocate memory for vendor_ext_m1");
1496 }
1497 }
1498 }
1499
1500
wpas_wps_init(struct wpa_supplicant * wpa_s)1501 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1502 {
1503 struct wps_context *wps;
1504 struct wps_registrar_config rcfg;
1505 struct hostapd_hw_modes *modes;
1506 u16 m;
1507
1508 wps = os_zalloc(sizeof(*wps));
1509 if (wps == NULL)
1510 return -1;
1511
1512 wps->cred_cb = wpa_supplicant_wps_cred;
1513 wps->event_cb = wpa_supplicant_wps_event;
1514 wps->rf_band_cb = wpa_supplicant_wps_rf_band;
1515 wps->cb_ctx = wpa_s;
1516
1517 wps->dev.device_name = wpa_s->conf->device_name;
1518 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1519 wps->dev.model_name = wpa_s->conf->model_name;
1520 wps->dev.model_number = wpa_s->conf->model_number;
1521 wps->dev.serial_number = wpa_s->conf->serial_number;
1522 wps->config_methods =
1523 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1524 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1525 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1526 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1527 "methods are not allowed at the same time");
1528 os_free(wps);
1529 return -1;
1530 }
1531 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1532 wps->dev.config_methods = wps->config_methods;
1533 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1534 WPS_DEV_TYPE_LEN);
1535
1536 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1537 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1538 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1539
1540 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1541
1542 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1543 modes = wpa_s->hw.modes;
1544 if (modes) {
1545 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1546 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1547 modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1548 wps->dev.rf_bands |= WPS_RF_24GHZ;
1549 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1550 wps->dev.rf_bands |= WPS_RF_50GHZ;
1551 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211AD)
1552 wps->dev.rf_bands |= WPS_RF_60GHZ;
1553 }
1554 }
1555 if (wps->dev.rf_bands == 0) {
1556 /*
1557 * Default to claiming support for both bands if the driver
1558 * does not provide support for fetching supported bands.
1559 */
1560 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1561 }
1562 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1563 wpas_wps_set_uuid(wpa_s, wps);
1564
1565 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1566 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1567
1568 os_memset(&rcfg, 0, sizeof(rcfg));
1569 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1570 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1571 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1572 rcfg.cb_ctx = wpa_s;
1573
1574 wps->registrar = wps_registrar_init(wps, &rcfg);
1575 if (wps->registrar == NULL) {
1576 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1577 os_free(wps);
1578 return -1;
1579 }
1580
1581 wpa_s->wps = wps;
1582
1583 return 0;
1584 }
1585
1586
1587 #ifdef CONFIG_WPS_ER
wpas_wps_nfc_clear(struct wps_context * wps)1588 static void wpas_wps_nfc_clear(struct wps_context *wps)
1589 {
1590 wps->ap_nfc_dev_pw_id = 0;
1591 wpabuf_free(wps->ap_nfc_dh_pubkey);
1592 wps->ap_nfc_dh_pubkey = NULL;
1593 wpabuf_free(wps->ap_nfc_dh_privkey);
1594 wps->ap_nfc_dh_privkey = NULL;
1595 wpabuf_free(wps->ap_nfc_dev_pw);
1596 wps->ap_nfc_dev_pw = NULL;
1597 }
1598 #endif /* CONFIG_WPS_ER */
1599
1600
wpas_wps_deinit(struct wpa_supplicant * wpa_s)1601 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1602 {
1603 wpas_wps_assoc_with_cred_cancel(wpa_s);
1604 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1605 eloop_cancel_timeout(wpas_wps_clear_timeout, wpa_s, NULL);
1606 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1607 wpas_wps_clear_ap_info(wpa_s);
1608
1609 #ifdef CONFIG_P2P
1610 eloop_cancel_timeout(wpas_p2p_pbc_overlap_cb, wpa_s, NULL);
1611 #endif /* CONFIG_P2P */
1612
1613 if (wpa_s->wps == NULL)
1614 return;
1615
1616 #ifdef CONFIG_WPS_ER
1617 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1618 wpa_s->wps_er = NULL;
1619 wpas_wps_nfc_clear(wpa_s->wps);
1620 #endif /* CONFIG_WPS_ER */
1621
1622 wps_registrar_deinit(wpa_s->wps->registrar);
1623 wpabuf_free(wpa_s->wps->dh_pubkey);
1624 wpabuf_free(wpa_s->wps->dh_privkey);
1625 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1626 os_free(wpa_s->wps->network_key);
1627 os_free(wpa_s->wps);
1628 wpa_s->wps = NULL;
1629 }
1630
1631
wpas_wps_ssid_bss_match(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)1632 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1633 struct wpa_ssid *ssid, struct wpa_bss *bss)
1634 {
1635 struct wpabuf *wps_ie;
1636
1637 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1638 return -1;
1639
1640 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1641 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1642 if (!wps_ie) {
1643 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1644 return 0;
1645 }
1646
1647 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1648 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1649 "without active PBC Registrar");
1650 wpabuf_free(wps_ie);
1651 return 0;
1652 }
1653
1654 /* TODO: overlap detection */
1655 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1656 "(Active PBC)");
1657 wpabuf_free(wps_ie);
1658 return 1;
1659 }
1660
1661 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1662 if (!wps_ie) {
1663 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1664 return 0;
1665 }
1666
1667 /*
1668 * Start with WPS APs that advertise our address as an
1669 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1670 * allow any WPS AP after couple of scans since some APs do not
1671 * set Selected Registrar attribute properly when using
1672 * external Registrar.
1673 */
1674 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1675 struct os_reltime age;
1676
1677 os_reltime_age(&wpa_s->wps_pin_start_time, &age);
1678
1679 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG ||
1680 age.sec < WPS_PIN_TIME_IGNORE_SEL_REG) {
1681 wpa_printf(MSG_DEBUG,
1682 " skip - WPS AP without active PIN Registrar (scan_runs=%d age=%d)",
1683 wpa_s->scan_runs, (int) age.sec);
1684 wpabuf_free(wps_ie);
1685 return 0;
1686 }
1687 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1688 } else {
1689 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1690 "(Authorized MAC or Active PIN)");
1691 }
1692 wpabuf_free(wps_ie);
1693 return 1;
1694 }
1695
1696 if (wps_ie) {
1697 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1698 wpabuf_free(wps_ie);
1699 return 1;
1700 }
1701
1702 return -1;
1703 }
1704
1705
wpas_wps_ssid_wildcard_ok(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)1706 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1707 struct wpa_ssid *ssid,
1708 struct wpa_bss *bss)
1709 {
1710 struct wpabuf *wps_ie = NULL;
1711 int ret = 0;
1712
1713 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1714 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1715 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1716 /* allow wildcard SSID for WPS PBC */
1717 ret = 1;
1718 }
1719 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1720 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1721 if (wps_ie &&
1722 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1723 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1724 /* allow wildcard SSID for WPS PIN */
1725 ret = 1;
1726 }
1727 }
1728
1729 if (!ret && ssid->bssid_set &&
1730 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1731 /* allow wildcard SSID due to hardcoded BSSID match */
1732 ret = 1;
1733 }
1734
1735 #ifdef CONFIG_WPS_STRICT
1736 if (wps_ie) {
1737 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1738 0, bss->bssid) < 0)
1739 ret = 0;
1740 if (bss->beacon_ie_len) {
1741 struct wpabuf *bcn_wps;
1742 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1743 bss, WPS_IE_VENDOR_TYPE);
1744 if (bcn_wps == NULL) {
1745 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1746 "missing from AP Beacon");
1747 ret = 0;
1748 } else {
1749 if (wps_validate_beacon(wps_ie) < 0)
1750 ret = 0;
1751 wpabuf_free(bcn_wps);
1752 }
1753 }
1754 }
1755 #endif /* CONFIG_WPS_STRICT */
1756
1757 wpabuf_free(wps_ie);
1758
1759 return ret;
1760 }
1761
1762
wpas_wps_scan_pbc_overlap(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid)1763 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1764 struct wpa_bss *selected, struct wpa_ssid *ssid)
1765 {
1766 const u8 *sel_uuid;
1767 struct wpabuf *wps_ie;
1768 int ret = 0;
1769 size_t i;
1770
1771 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1772 return 0;
1773
1774 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1775 "present in scan results; selected BSSID " MACSTR,
1776 MAC2STR(selected->bssid));
1777
1778 /* Make sure that only one AP is in active PBC mode */
1779 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1780 if (wps_ie) {
1781 sel_uuid = wps_get_uuid_e(wps_ie);
1782 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1783 sel_uuid, UUID_LEN);
1784 } else {
1785 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1786 "WPS IE?!");
1787 sel_uuid = NULL;
1788 }
1789
1790 for (i = 0; i < wpa_s->num_wps_ap; i++) {
1791 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1792
1793 if (!ap->pbc_active ||
1794 os_memcmp(selected->bssid, ap->bssid, ETH_ALEN) == 0)
1795 continue;
1796
1797 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1798 MACSTR, MAC2STR(ap->bssid));
1799 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1800 ap->uuid, UUID_LEN);
1801 if (sel_uuid == NULL ||
1802 os_memcmp(sel_uuid, ap->uuid, UUID_LEN) != 0) {
1803 ret = 1; /* PBC overlap */
1804 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1805 MACSTR " and " MACSTR,
1806 MAC2STR(selected->bssid),
1807 MAC2STR(ap->bssid));
1808 break;
1809 }
1810
1811 /* TODO: verify that this is reasonable dual-band situation */
1812 }
1813
1814 wpabuf_free(wps_ie);
1815
1816 return ret;
1817 }
1818
1819
wpas_wps_notify_scan_results(struct wpa_supplicant * wpa_s)1820 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1821 {
1822 struct wpa_bss *bss;
1823 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1824
1825 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1826 return;
1827
1828 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1829 struct wpabuf *ie;
1830 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1831 if (!ie)
1832 continue;
1833 if (wps_is_selected_pbc_registrar(ie))
1834 pbc++;
1835 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1836 auth++;
1837 else if (wps_is_selected_pin_registrar(ie))
1838 pin++;
1839 else
1840 wps++;
1841 wpabuf_free(ie);
1842 }
1843
1844 if (pbc)
1845 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1846 else if (auth)
1847 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1848 else if (pin)
1849 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1850 else if (wps)
1851 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1852 }
1853
1854
wpas_wps_searching(struct wpa_supplicant * wpa_s)1855 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1856 {
1857 struct wpa_ssid *ssid;
1858
1859 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1860 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1861 return 1;
1862 }
1863
1864 return 0;
1865 }
1866
1867
wpas_wps_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)1868 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1869 char *end)
1870 {
1871 struct wpabuf *wps_ie;
1872 int ret;
1873
1874 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1875 if (wps_ie == NULL)
1876 return 0;
1877
1878 ret = wps_attr_text(wps_ie, buf, end);
1879 wpabuf_free(wps_ie);
1880 return ret;
1881 }
1882
1883
wpas_wps_er_start(struct wpa_supplicant * wpa_s,const char * filter)1884 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1885 {
1886 #ifdef CONFIG_WPS_ER
1887 if (wpa_s->wps_er) {
1888 wps_er_refresh(wpa_s->wps_er);
1889 return 0;
1890 }
1891 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1892 if (wpa_s->wps_er == NULL)
1893 return -1;
1894 return 0;
1895 #else /* CONFIG_WPS_ER */
1896 return 0;
1897 #endif /* CONFIG_WPS_ER */
1898 }
1899
1900
wpas_wps_er_stop(struct wpa_supplicant * wpa_s)1901 void wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1902 {
1903 #ifdef CONFIG_WPS_ER
1904 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1905 wpa_s->wps_er = NULL;
1906 #endif /* CONFIG_WPS_ER */
1907 }
1908
1909
1910 #ifdef CONFIG_WPS_ER
wpas_wps_er_add_pin(struct wpa_supplicant * wpa_s,const u8 * addr,const char * uuid,const char * pin)1911 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1912 const char *uuid, const char *pin)
1913 {
1914 u8 u[UUID_LEN];
1915 const u8 *use_uuid = NULL;
1916 u8 addr_buf[ETH_ALEN];
1917
1918 if (os_strcmp(uuid, "any") == 0) {
1919 } else if (uuid_str2bin(uuid, u) == 0) {
1920 use_uuid = u;
1921 } else if (hwaddr_aton(uuid, addr_buf) == 0) {
1922 use_uuid = wps_er_get_sta_uuid(wpa_s->wps_er, addr_buf);
1923 if (use_uuid == NULL)
1924 return -1;
1925 } else
1926 return -1;
1927 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1928 use_uuid,
1929 (const u8 *) pin, os_strlen(pin), 300);
1930 }
1931
1932
wpas_wps_er_pbc(struct wpa_supplicant * wpa_s,const char * uuid)1933 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1934 {
1935 u8 u[UUID_LEN], *use_uuid = NULL;
1936 u8 addr[ETH_ALEN], *use_addr = NULL;
1937
1938 if (uuid_str2bin(uuid, u) == 0)
1939 use_uuid = u;
1940 else if (hwaddr_aton(uuid, addr) == 0)
1941 use_addr = addr;
1942 else
1943 return -1;
1944 return wps_er_pbc(wpa_s->wps_er, use_uuid, use_addr);
1945 }
1946
1947
wpas_wps_er_learn(struct wpa_supplicant * wpa_s,const char * uuid,const char * pin)1948 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1949 const char *pin)
1950 {
1951 u8 u[UUID_LEN], *use_uuid = NULL;
1952 u8 addr[ETH_ALEN], *use_addr = NULL;
1953
1954 if (uuid_str2bin(uuid, u) == 0)
1955 use_uuid = u;
1956 else if (hwaddr_aton(uuid, addr) == 0)
1957 use_addr = addr;
1958 else
1959 return -1;
1960
1961 return wps_er_learn(wpa_s->wps_er, use_uuid, use_addr, (const u8 *) pin,
1962 os_strlen(pin));
1963 }
1964
1965
wpas_wps_network_to_cred(struct wpa_ssid * ssid,struct wps_credential * cred)1966 static int wpas_wps_network_to_cred(struct wpa_ssid *ssid,
1967 struct wps_credential *cred)
1968 {
1969 os_memset(cred, 0, sizeof(*cred));
1970 if (ssid->ssid_len > SSID_MAX_LEN)
1971 return -1;
1972 os_memcpy(cred->ssid, ssid->ssid, ssid->ssid_len);
1973 cred->ssid_len = ssid->ssid_len;
1974 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1975 cred->auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1976 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1977 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1978 cred->encr_type = WPS_ENCR_AES;
1979 else
1980 cred->encr_type = WPS_ENCR_TKIP;
1981 if (ssid->passphrase) {
1982 cred->key_len = os_strlen(ssid->passphrase);
1983 if (cred->key_len >= 64)
1984 return -1;
1985 os_memcpy(cred->key, ssid->passphrase, cred->key_len);
1986 } else if (ssid->psk_set) {
1987 cred->key_len = 32;
1988 os_memcpy(cred->key, ssid->psk, 32);
1989 } else
1990 return -1;
1991 } else {
1992 cred->auth_type = WPS_AUTH_OPEN;
1993 cred->encr_type = WPS_ENCR_NONE;
1994 }
1995
1996 return 0;
1997 }
1998
1999
wpas_wps_er_set_config(struct wpa_supplicant * wpa_s,const char * uuid,int id)2000 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
2001 int id)
2002 {
2003 u8 u[UUID_LEN], *use_uuid = NULL;
2004 u8 addr[ETH_ALEN], *use_addr = NULL;
2005 struct wpa_ssid *ssid;
2006 struct wps_credential cred;
2007 int ret;
2008
2009 if (uuid_str2bin(uuid, u) == 0)
2010 use_uuid = u;
2011 else if (hwaddr_aton(uuid, addr) == 0)
2012 use_addr = addr;
2013 else
2014 return -1;
2015 ssid = wpa_config_get_network(wpa_s->conf, id);
2016 if (ssid == NULL || ssid->ssid == NULL)
2017 return -1;
2018
2019 if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2020 return -1;
2021 ret = wps_er_set_config(wpa_s->wps_er, use_uuid, use_addr, &cred);
2022 os_memset(&cred, 0, sizeof(cred));
2023 return ret;
2024 }
2025
2026
wpas_wps_er_config(struct wpa_supplicant * wpa_s,const char * uuid,const char * pin,struct wps_new_ap_settings * settings)2027 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
2028 const char *pin, struct wps_new_ap_settings *settings)
2029 {
2030 u8 u[UUID_LEN], *use_uuid = NULL;
2031 u8 addr[ETH_ALEN], *use_addr = NULL;
2032 struct wps_credential cred;
2033 size_t len;
2034
2035 if (uuid_str2bin(uuid, u) == 0)
2036 use_uuid = u;
2037 else if (hwaddr_aton(uuid, addr) == 0)
2038 use_addr = addr;
2039 else
2040 return -1;
2041 if (settings->ssid_hex == NULL || settings->auth == NULL ||
2042 settings->encr == NULL || settings->key_hex == NULL)
2043 return -1;
2044
2045 os_memset(&cred, 0, sizeof(cred));
2046 len = os_strlen(settings->ssid_hex);
2047 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
2048 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
2049 return -1;
2050 cred.ssid_len = len / 2;
2051
2052 len = os_strlen(settings->key_hex);
2053 if ((len & 1) || len > 2 * sizeof(cred.key) ||
2054 hexstr2bin(settings->key_hex, cred.key, len / 2))
2055 return -1;
2056 cred.key_len = len / 2;
2057
2058 if (os_strcmp(settings->auth, "OPEN") == 0)
2059 cred.auth_type = WPS_AUTH_OPEN;
2060 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
2061 cred.auth_type = WPS_AUTH_WPAPSK;
2062 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
2063 cred.auth_type = WPS_AUTH_WPA2PSK;
2064 else
2065 return -1;
2066
2067 if (os_strcmp(settings->encr, "NONE") == 0)
2068 cred.encr_type = WPS_ENCR_NONE;
2069 #ifdef CONFIG_TESTING_OPTIONS
2070 else if (os_strcmp(settings->encr, "WEP") == 0)
2071 cred.encr_type = WPS_ENCR_WEP;
2072 #endif /* CONFIG_TESTING_OPTIONS */
2073 else if (os_strcmp(settings->encr, "TKIP") == 0)
2074 cred.encr_type = WPS_ENCR_TKIP;
2075 else if (os_strcmp(settings->encr, "CCMP") == 0)
2076 cred.encr_type = WPS_ENCR_AES;
2077 else
2078 return -1;
2079
2080 return wps_er_config(wpa_s->wps_er, use_uuid, use_addr,
2081 (const u8 *) pin, os_strlen(pin), &cred);
2082 }
2083
2084
2085 #ifdef CONFIG_WPS_NFC
wpas_wps_er_nfc_config_token(struct wpa_supplicant * wpa_s,int ndef,const char * uuid)2086 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
2087 int ndef, const char *uuid)
2088 {
2089 struct wpabuf *ret;
2090 u8 u[UUID_LEN], *use_uuid = NULL;
2091 u8 addr[ETH_ALEN], *use_addr = NULL;
2092
2093 if (!wpa_s->wps_er)
2094 return NULL;
2095
2096 if (uuid_str2bin(uuid, u) == 0)
2097 use_uuid = u;
2098 else if (hwaddr_aton(uuid, addr) == 0)
2099 use_addr = addr;
2100 else
2101 return NULL;
2102
2103 ret = wps_er_nfc_config_token(wpa_s->wps_er, use_uuid, use_addr);
2104 if (ndef && ret) {
2105 struct wpabuf *tmp;
2106 tmp = ndef_build_wifi(ret);
2107 wpabuf_free(ret);
2108 if (tmp == NULL)
2109 return NULL;
2110 ret = tmp;
2111 }
2112
2113 return ret;
2114 }
2115 #endif /* CONFIG_WPS_NFC */
2116
2117
2118 static int callbacks_pending = 0;
2119
wpas_wps_terminate_cb(void * ctx)2120 static void wpas_wps_terminate_cb(void *ctx)
2121 {
2122 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
2123 if (--callbacks_pending <= 0)
2124 eloop_terminate();
2125 }
2126 #endif /* CONFIG_WPS_ER */
2127
2128
wpas_wps_terminate_pending(struct wpa_supplicant * wpa_s)2129 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
2130 {
2131 #ifdef CONFIG_WPS_ER
2132 if (wpa_s->wps_er) {
2133 callbacks_pending++;
2134 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
2135 wpa_s->wps_er = NULL;
2136 return 1;
2137 }
2138 #endif /* CONFIG_WPS_ER */
2139 return 0;
2140 }
2141
2142
wpas_wps_update_config(struct wpa_supplicant * wpa_s)2143 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
2144 {
2145 struct wps_context *wps = wpa_s->wps;
2146
2147 if (wps == NULL)
2148 return;
2149
2150 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
2151 wps->config_methods = wps_config_methods_str2bin(
2152 wpa_s->conf->config_methods);
2153 if ((wps->config_methods &
2154 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
2155 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
2156 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
2157 "config methods are not allowed at the "
2158 "same time");
2159 wps->config_methods &= ~WPS_CONFIG_LABEL;
2160 }
2161 }
2162 wps->config_methods = wps_fix_config_methods(wps->config_methods);
2163 wps->dev.config_methods = wps->config_methods;
2164
2165 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
2166 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
2167 WPS_DEV_TYPE_LEN);
2168
2169 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
2170 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2171 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
2172 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2173 }
2174
2175 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
2176 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
2177
2178 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
2179 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
2180
2181 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
2182 wpas_wps_set_uuid(wpa_s, wps);
2183
2184 if (wpa_s->conf->changed_parameters &
2185 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
2186 /* Update pointers to make sure they refer current values */
2187 wps->dev.device_name = wpa_s->conf->device_name;
2188 wps->dev.manufacturer = wpa_s->conf->manufacturer;
2189 wps->dev.model_name = wpa_s->conf->model_name;
2190 wps->dev.model_number = wpa_s->conf->model_number;
2191 wps->dev.serial_number = wpa_s->conf->serial_number;
2192 }
2193 }
2194
2195
2196 #ifdef CONFIG_WPS_NFC
2197
2198 #ifdef CONFIG_WPS_ER
2199 static struct wpabuf *
wpas_wps_network_config_token(struct wpa_supplicant * wpa_s,int ndef,struct wpa_ssid * ssid)2200 wpas_wps_network_config_token(struct wpa_supplicant *wpa_s, int ndef,
2201 struct wpa_ssid *ssid)
2202 {
2203 struct wpabuf *ret;
2204 struct wps_credential cred;
2205
2206 if (wpas_wps_network_to_cred(ssid, &cred) < 0)
2207 return NULL;
2208
2209 ret = wps_er_config_token_from_cred(wpa_s->wps, &cred);
2210
2211 if (ndef && ret) {
2212 struct wpabuf *tmp;
2213 tmp = ndef_build_wifi(ret);
2214 wpabuf_free(ret);
2215 if (tmp == NULL)
2216 return NULL;
2217 ret = tmp;
2218 }
2219
2220 return ret;
2221 }
2222 #endif /* CONFIG_WPS_ER */
2223
2224
wpas_wps_nfc_config_token(struct wpa_supplicant * wpa_s,int ndef,const char * id_str)2225 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
2226 int ndef, const char *id_str)
2227 {
2228 #ifdef CONFIG_WPS_ER
2229 if (id_str) {
2230 int id;
2231 char *end = NULL;
2232 struct wpa_ssid *ssid;
2233
2234 id = strtol(id_str, &end, 10);
2235 if (end && *end)
2236 return NULL;
2237
2238 ssid = wpa_config_get_network(wpa_s->conf, id);
2239 if (ssid == NULL)
2240 return NULL;
2241 return wpas_wps_network_config_token(wpa_s, ndef, ssid);
2242 }
2243 #endif /* CONFIG_WPS_ER */
2244 #ifdef CONFIG_AP
2245 if (wpa_s->ap_iface)
2246 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
2247 #endif /* CONFIG_AP */
2248 return NULL;
2249 }
2250
2251
wpas_wps_nfc_token(struct wpa_supplicant * wpa_s,int ndef)2252 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
2253 {
2254 if (wpa_s->conf->wps_nfc_pw_from_config) {
2255 return wps_nfc_token_build(ndef,
2256 wpa_s->conf->wps_nfc_dev_pw_id,
2257 wpa_s->conf->wps_nfc_dh_pubkey,
2258 wpa_s->conf->wps_nfc_dev_pw);
2259 }
2260
2261 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
2262 &wpa_s->conf->wps_nfc_dh_pubkey,
2263 &wpa_s->conf->wps_nfc_dh_privkey,
2264 &wpa_s->conf->wps_nfc_dev_pw);
2265 }
2266
2267
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)2268 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *go_dev_addr,
2269 const u8 *bssid,
2270 const struct wpabuf *dev_pw, u16 dev_pw_id,
2271 int p2p_group, const u8 *peer_pubkey_hash,
2272 const u8 *ssid, size_t ssid_len, int freq)
2273 {
2274 struct wps_context *wps = wpa_s->wps;
2275 char pw[32 * 2 + 1];
2276
2277 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2278 dev_pw = wpa_s->conf->wps_nfc_dev_pw;
2279 dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
2280 }
2281
2282 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
2283 wpa_s->conf->wps_nfc_dh_privkey == NULL) {
2284 wpa_printf(MSG_DEBUG, "WPS: Missing DH params - "
2285 "cannot start NFC-triggered connection");
2286 return -1;
2287 }
2288
2289 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER && dev_pw == NULL) {
2290 wpa_printf(MSG_DEBUG, "WPS: Missing Device Password (id=%u) - "
2291 "cannot start NFC-triggered connection", dev_pw_id);
2292 return -1;
2293 }
2294
2295 dh5_free(wps->dh_ctx);
2296 wpabuf_free(wps->dh_pubkey);
2297 wpabuf_free(wps->dh_privkey);
2298 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2299 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2300 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
2301 wps->dh_ctx = NULL;
2302 wpabuf_free(wps->dh_pubkey);
2303 wps->dh_pubkey = NULL;
2304 wpabuf_free(wps->dh_privkey);
2305 wps->dh_privkey = NULL;
2306 wpa_printf(MSG_DEBUG, "WPS: Failed to get DH priv/pub key");
2307 return -1;
2308 }
2309 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
2310 if (wps->dh_ctx == NULL) {
2311 wpabuf_free(wps->dh_pubkey);
2312 wps->dh_pubkey = NULL;
2313 wpabuf_free(wps->dh_privkey);
2314 wps->dh_privkey = NULL;
2315 wpa_printf(MSG_DEBUG, "WPS: Failed to initialize DH context");
2316 return -1;
2317 }
2318
2319 if (dev_pw) {
2320 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
2321 wpabuf_head(dev_pw),
2322 wpabuf_len(dev_pw));
2323 }
2324 return wpas_wps_start_dev_pw(wpa_s, go_dev_addr, bssid,
2325 dev_pw ? pw : NULL,
2326 p2p_group, dev_pw_id, peer_pubkey_hash,
2327 ssid, ssid_len, freq);
2328 }
2329
2330
wpas_wps_use_cred(struct wpa_supplicant * wpa_s,struct wps_parse_attr * attr)2331 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
2332 struct wps_parse_attr *attr)
2333 {
2334 /*
2335 * Disable existing networks temporarily to allow the newly learned
2336 * credential to be preferred. Enable the temporarily disabled networks
2337 * after 10 seconds.
2338 */
2339 wpas_wps_temp_disable(wpa_s, NULL);
2340 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
2341 NULL);
2342
2343 if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
2344 return -1;
2345
2346 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
2347 return 0;
2348
2349 if (attr->ap_channel) {
2350 u16 chan = WPA_GET_BE16(attr->ap_channel);
2351 int freq = 0;
2352
2353 if (chan >= 1 && chan <= 13)
2354 freq = 2407 + 5 * chan;
2355 else if (chan == 14)
2356 freq = 2484;
2357 else if (chan >= 30)
2358 freq = 5000 + 5 * chan;
2359
2360 if (freq) {
2361 wpa_printf(MSG_DEBUG, "WPS: Credential container indicated AP channel %u -> %u MHz",
2362 chan, freq);
2363 wpa_s->after_wps = 5;
2364 wpa_s->wps_freq = freq;
2365 }
2366 }
2367
2368 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
2369 "based on the received credential added");
2370 wpa_s->normal_scans = 0;
2371 wpa_supplicant_reinit_autoscan(wpa_s);
2372 wpa_s->disconnected = 0;
2373 wpa_s->reassociate = 1;
2374
2375 wpa_supplicant_cancel_sched_scan(wpa_s);
2376 wpa_supplicant_req_scan(wpa_s, 0, 0);
2377
2378 return 0;
2379 }
2380
2381
2382 #ifdef CONFIG_WPS_ER
wpas_wps_add_nfc_password_token(struct wpa_supplicant * wpa_s,struct wps_parse_attr * attr)2383 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
2384 struct wps_parse_attr *attr)
2385 {
2386 return wps_registrar_add_nfc_password_token(
2387 wpa_s->wps->registrar, attr->oob_dev_password,
2388 attr->oob_dev_password_len);
2389 }
2390 #endif /* CONFIG_WPS_ER */
2391
2392
wpas_wps_nfc_tag_process(struct wpa_supplicant * wpa_s,const struct wpabuf * wps)2393 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
2394 const struct wpabuf *wps)
2395 {
2396 struct wps_parse_attr attr;
2397
2398 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
2399
2400 if (wps_parse_msg(wps, &attr)) {
2401 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
2402 return -1;
2403 }
2404
2405 if (attr.num_cred)
2406 return wpas_wps_use_cred(wpa_s, &attr);
2407
2408 #ifdef CONFIG_WPS_ER
2409 if (attr.oob_dev_password)
2410 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
2411 #endif /* CONFIG_WPS_ER */
2412
2413 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
2414 return -1;
2415 }
2416
2417
wpas_wps_nfc_tag_read(struct wpa_supplicant * wpa_s,const struct wpabuf * data,int forced_freq)2418 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
2419 const struct wpabuf *data, int forced_freq)
2420 {
2421 const struct wpabuf *wps = data;
2422 struct wpabuf *tmp = NULL;
2423 int ret;
2424
2425 if (wpabuf_len(data) < 4)
2426 return -1;
2427
2428 if (*wpabuf_head_u8(data) != 0x10) {
2429 /* Assume this contains full NDEF record */
2430 tmp = ndef_parse_wifi(data);
2431 if (tmp == NULL) {
2432 #ifdef CONFIG_P2P
2433 tmp = ndef_parse_p2p(data);
2434 if (tmp) {
2435 ret = wpas_p2p_nfc_tag_process(wpa_s, tmp,
2436 forced_freq);
2437 wpabuf_free(tmp);
2438 return ret;
2439 }
2440 #endif /* CONFIG_P2P */
2441 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
2442 return -1;
2443 }
2444 wps = tmp;
2445 }
2446
2447 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2448 wpabuf_free(tmp);
2449 return ret;
2450 }
2451
2452
wpas_wps_nfc_handover_req(struct wpa_supplicant * wpa_s,int ndef)2453 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s,
2454 int ndef)
2455 {
2456 struct wpabuf *ret;
2457
2458 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
2459 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2460 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2461 return NULL;
2462
2463 ret = wps_build_nfc_handover_req(wpa_s->wps,
2464 wpa_s->conf->wps_nfc_dh_pubkey);
2465
2466 if (ndef && ret) {
2467 struct wpabuf *tmp;
2468 tmp = ndef_build_wifi(ret);
2469 wpabuf_free(ret);
2470 if (tmp == NULL)
2471 return NULL;
2472 ret = tmp;
2473 }
2474
2475 return ret;
2476 }
2477
2478
2479 #ifdef CONFIG_WPS_NFC
2480
2481 static struct wpabuf *
wpas_wps_er_nfc_handover_sel(struct wpa_supplicant * wpa_s,int ndef,const char * uuid)2482 wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s, int ndef,
2483 const char *uuid)
2484 {
2485 #ifdef CONFIG_WPS_ER
2486 struct wpabuf *ret;
2487 u8 u[UUID_LEN], *use_uuid = NULL;
2488 u8 addr[ETH_ALEN], *use_addr = NULL;
2489 struct wps_context *wps = wpa_s->wps;
2490
2491 if (wps == NULL)
2492 return NULL;
2493
2494 if (uuid == NULL)
2495 return NULL;
2496 if (uuid_str2bin(uuid, u) == 0)
2497 use_uuid = u;
2498 else if (hwaddr_aton(uuid, addr) == 0)
2499 use_addr = addr;
2500 else
2501 return NULL;
2502
2503 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL) {
2504 if (wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
2505 &wpa_s->conf->wps_nfc_dh_privkey) < 0)
2506 return NULL;
2507 }
2508
2509 wpas_wps_nfc_clear(wps);
2510 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
2511 wps->ap_nfc_dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
2512 wps->ap_nfc_dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
2513 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
2514 wpas_wps_nfc_clear(wps);
2515 return NULL;
2516 }
2517
2518 ret = wps_er_nfc_handover_sel(wpa_s->wps_er, wpa_s->wps, use_uuid,
2519 use_addr, wpa_s->conf->wps_nfc_dh_pubkey);
2520 if (ndef && ret) {
2521 struct wpabuf *tmp;
2522 tmp = ndef_build_wifi(ret);
2523 wpabuf_free(ret);
2524 if (tmp == NULL)
2525 return NULL;
2526 ret = tmp;
2527 }
2528
2529 return ret;
2530 #else /* CONFIG_WPS_ER */
2531 return NULL;
2532 #endif /* CONFIG_WPS_ER */
2533 }
2534 #endif /* CONFIG_WPS_NFC */
2535
2536
wpas_wps_nfc_handover_sel(struct wpa_supplicant * wpa_s,int ndef,int cr,const char * uuid)2537 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2538 int ndef, int cr, const char *uuid)
2539 {
2540 struct wpabuf *ret;
2541 if (!cr)
2542 return NULL;
2543 ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2544 if (ret)
2545 return ret;
2546 return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2547 }
2548
2549
wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant * wpa_s,const struct wpabuf * data)2550 static int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2551 const struct wpabuf *data)
2552 {
2553 struct wpabuf *wps;
2554 int ret = -1;
2555 u16 wsc_len;
2556 const u8 *pos;
2557 struct wpabuf msg;
2558 struct wps_parse_attr attr;
2559 u16 dev_pw_id;
2560 const u8 *bssid = NULL;
2561 int freq = 0;
2562
2563 wps = ndef_parse_wifi(data);
2564 if (wps == NULL)
2565 return -1;
2566 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2567 "payload from NFC connection handover");
2568 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2569 if (wpabuf_len(wps) < 2) {
2570 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Select "
2571 "Message");
2572 goto out;
2573 }
2574 pos = wpabuf_head(wps);
2575 wsc_len = WPA_GET_BE16(pos);
2576 if (wsc_len > wpabuf_len(wps) - 2) {
2577 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2578 "in Wi-Fi Handover Select Message", wsc_len);
2579 goto out;
2580 }
2581 pos += 2;
2582
2583 wpa_hexdump(MSG_DEBUG,
2584 "WPS: WSC attributes in Wi-Fi Handover Select Message",
2585 pos, wsc_len);
2586 if (wsc_len < wpabuf_len(wps) - 2) {
2587 wpa_hexdump(MSG_DEBUG,
2588 "WPS: Ignore extra data after WSC attributes",
2589 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2590 }
2591
2592 wpabuf_set(&msg, pos, wsc_len);
2593 ret = wps_parse_msg(&msg, &attr);
2594 if (ret < 0) {
2595 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2596 "Wi-Fi Handover Select Message");
2597 goto out;
2598 }
2599
2600 if (attr.oob_dev_password == NULL ||
2601 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2602 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2603 "included in Wi-Fi Handover Select Message");
2604 ret = -1;
2605 goto out;
2606 }
2607
2608 if (attr.ssid == NULL) {
2609 wpa_printf(MSG_DEBUG, "WPS: No SSID included in Wi-Fi Handover "
2610 "Select Message");
2611 ret = -1;
2612 goto out;
2613 }
2614
2615 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", attr.ssid, attr.ssid_len);
2616
2617 if (attr.mac_addr) {
2618 bssid = attr.mac_addr;
2619 wpa_printf(MSG_DEBUG, "WPS: MAC Address (BSSID): " MACSTR,
2620 MAC2STR(bssid));
2621 }
2622
2623 if (attr.rf_bands)
2624 wpa_printf(MSG_DEBUG, "WPS: RF Bands: %d", *attr.rf_bands);
2625
2626 if (attr.ap_channel) {
2627 u16 chan = WPA_GET_BE16(attr.ap_channel);
2628
2629 wpa_printf(MSG_DEBUG, "WPS: AP Channel: %d", chan);
2630
2631 if (chan >= 1 && chan <= 13 &&
2632 (attr.rf_bands == NULL || *attr.rf_bands & WPS_RF_24GHZ))
2633 freq = 2407 + 5 * chan;
2634 else if (chan == 14 &&
2635 (attr.rf_bands == NULL ||
2636 *attr.rf_bands & WPS_RF_24GHZ))
2637 freq = 2484;
2638 else if (chan >= 30 &&
2639 (attr.rf_bands == NULL ||
2640 *attr.rf_bands & WPS_RF_50GHZ))
2641 freq = 5000 + 5 * chan;
2642 else if (chan >= 1 && chan <= 4 &&
2643 (attr.rf_bands == NULL ||
2644 *attr.rf_bands & WPS_RF_60GHZ))
2645 freq = 56160 + 2160 * chan;
2646
2647 if (freq) {
2648 wpa_printf(MSG_DEBUG,
2649 "WPS: AP indicated channel %u -> %u MHz",
2650 chan, freq);
2651 }
2652 }
2653
2654 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2655 attr.oob_dev_password, attr.oob_dev_password_len);
2656 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2657 WPS_OOB_PUBKEY_HASH_LEN);
2658 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2659 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2660 "%u in Wi-Fi Handover Select Message", dev_pw_id);
2661 ret = -1;
2662 goto out;
2663 }
2664 wpa_hexdump(MSG_DEBUG, "WPS: AP Public Key hash",
2665 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2666
2667 ret = wpas_wps_start_nfc(wpa_s, NULL, bssid, NULL, dev_pw_id, 0,
2668 attr.oob_dev_password,
2669 attr.ssid, attr.ssid_len, freq);
2670
2671 out:
2672 wpabuf_free(wps);
2673 return ret;
2674 }
2675
2676
wpas_wps_nfc_report_handover(struct wpa_supplicant * wpa_s,const struct wpabuf * req,const struct wpabuf * sel)2677 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2678 const struct wpabuf *req,
2679 const struct wpabuf *sel)
2680 {
2681 wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2682 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2683 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2684 return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2685 }
2686
2687
wpas_er_wps_nfc_report_handover(struct wpa_supplicant * wpa_s,const struct wpabuf * req,const struct wpabuf * sel)2688 int wpas_er_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2689 const struct wpabuf *req,
2690 const struct wpabuf *sel)
2691 {
2692 struct wpabuf *wps;
2693 int ret = -1;
2694 u16 wsc_len;
2695 const u8 *pos;
2696 struct wpabuf msg;
2697 struct wps_parse_attr attr;
2698 u16 dev_pw_id;
2699
2700 /*
2701 * Enrollee/station is always initiator of the NFC connection handover,
2702 * so use the request message here to find Enrollee public key hash.
2703 */
2704 wps = ndef_parse_wifi(req);
2705 if (wps == NULL)
2706 return -1;
2707 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2708 "payload from NFC connection handover");
2709 wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
2710 if (wpabuf_len(wps) < 2) {
2711 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
2712 "Message");
2713 goto out;
2714 }
2715 pos = wpabuf_head(wps);
2716 wsc_len = WPA_GET_BE16(pos);
2717 if (wsc_len > wpabuf_len(wps) - 2) {
2718 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
2719 "in rt Wi-Fi Handover Request Message", wsc_len);
2720 goto out;
2721 }
2722 pos += 2;
2723
2724 wpa_hexdump(MSG_DEBUG,
2725 "WPS: WSC attributes in Wi-Fi Handover Request Message",
2726 pos, wsc_len);
2727 if (wsc_len < wpabuf_len(wps) - 2) {
2728 wpa_hexdump(MSG_DEBUG,
2729 "WPS: Ignore extra data after WSC attributes",
2730 pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
2731 }
2732
2733 wpabuf_set(&msg, pos, wsc_len);
2734 ret = wps_parse_msg(&msg, &attr);
2735 if (ret < 0) {
2736 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
2737 "Wi-Fi Handover Request Message");
2738 goto out;
2739 }
2740
2741 if (attr.oob_dev_password == NULL ||
2742 attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
2743 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
2744 "included in Wi-Fi Handover Request Message");
2745 ret = -1;
2746 goto out;
2747 }
2748
2749 if (attr.uuid_e == NULL) {
2750 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
2751 "Handover Request Message");
2752 ret = -1;
2753 goto out;
2754 }
2755
2756 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
2757
2758 wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
2759 attr.oob_dev_password, attr.oob_dev_password_len);
2760 dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
2761 WPS_OOB_PUBKEY_HASH_LEN);
2762 if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
2763 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
2764 "%u in Wi-Fi Handover Request Message", dev_pw_id);
2765 ret = -1;
2766 goto out;
2767 }
2768 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
2769 attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
2770
2771 ret = wps_registrar_add_nfc_pw_token(wpa_s->wps->registrar,
2772 attr.oob_dev_password,
2773 DEV_PW_NFC_CONNECTION_HANDOVER,
2774 NULL, 0, 1);
2775
2776 out:
2777 wpabuf_free(wps);
2778 return ret;
2779 }
2780
2781 #endif /* CONFIG_WPS_NFC */
2782
2783
wpas_wps_dump_ap_info(struct wpa_supplicant * wpa_s)2784 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2785 {
2786 size_t i;
2787 struct os_reltime now;
2788
2789 if (wpa_debug_level > MSG_DEBUG)
2790 return;
2791
2792 if (wpa_s->wps_ap == NULL)
2793 return;
2794
2795 os_get_reltime(&now);
2796
2797 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2798 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2799 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2800
2801 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2802 "tries=%d last_attempt=%d sec ago blacklist=%d",
2803 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2804 ap->last_attempt.sec > 0 ?
2805 (int) now.sec - (int) ap->last_attempt.sec : -1,
2806 e ? e->count : 0);
2807 }
2808 }
2809
2810
wpas_wps_get_ap_info(struct wpa_supplicant * wpa_s,const u8 * bssid)2811 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2812 const u8 *bssid)
2813 {
2814 size_t i;
2815
2816 if (wpa_s->wps_ap == NULL)
2817 return NULL;
2818
2819 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2820 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2821 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2822 return ap;
2823 }
2824
2825 return NULL;
2826 }
2827
2828
wpas_wps_update_ap_info_bss(struct wpa_supplicant * wpa_s,struct wpa_scan_res * res)2829 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2830 struct wpa_scan_res *res)
2831 {
2832 struct wpabuf *wps;
2833 enum wps_ap_info_type type;
2834 struct wps_ap_info *ap;
2835 int r, pbc_active;
2836 const u8 *uuid;
2837
2838 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2839 return;
2840
2841 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2842 if (wps == NULL)
2843 return;
2844
2845 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2846 if (r == 2)
2847 type = WPS_AP_SEL_REG_OUR;
2848 else if (r == 1)
2849 type = WPS_AP_SEL_REG;
2850 else
2851 type = WPS_AP_NOT_SEL_REG;
2852
2853 uuid = wps_get_uuid_e(wps);
2854 pbc_active = wps_is_selected_pbc_registrar(wps);
2855
2856 ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2857 if (ap) {
2858 if (ap->type != type) {
2859 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2860 " changed type %d -> %d",
2861 MAC2STR(res->bssid), ap->type, type);
2862 ap->type = type;
2863 if (type != WPS_AP_NOT_SEL_REG)
2864 wpa_blacklist_del(wpa_s, ap->bssid);
2865 }
2866 ap->pbc_active = pbc_active;
2867 if (uuid)
2868 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2869 goto out;
2870 }
2871
2872 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2873 sizeof(struct wps_ap_info));
2874 if (ap == NULL)
2875 goto out;
2876
2877 wpa_s->wps_ap = ap;
2878 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2879 wpa_s->num_wps_ap++;
2880
2881 os_memset(ap, 0, sizeof(*ap));
2882 os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2883 ap->type = type;
2884 ap->pbc_active = pbc_active;
2885 if (uuid)
2886 os_memcpy(ap->uuid, uuid, WPS_UUID_LEN);
2887 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2888 MAC2STR(ap->bssid), ap->type);
2889
2890 out:
2891 wpabuf_free(wps);
2892 }
2893
2894
wpas_wps_update_ap_info(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)2895 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2896 struct wpa_scan_results *scan_res)
2897 {
2898 size_t i;
2899
2900 for (i = 0; i < scan_res->num; i++)
2901 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2902
2903 wpas_wps_dump_ap_info(wpa_s);
2904 }
2905
2906
wpas_wps_notify_assoc(struct wpa_supplicant * wpa_s,const u8 * bssid)2907 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2908 {
2909 struct wps_ap_info *ap;
2910
2911 wpa_s->after_wps = 0;
2912
2913 if (!wpa_s->wps_ap_iter)
2914 return;
2915 ap = wpas_wps_get_ap_info(wpa_s, bssid);
2916 if (ap == NULL)
2917 return;
2918 ap->tries++;
2919 os_get_reltime(&ap->last_attempt);
2920 }
2921