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WPS: Use latest updated BSS entry if multiple BSSID matches found
[thirdparty/hostap.git] / wpa_supplicant / wps_supplicant.c
1 /*
2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "eloop.h"
13 #include "uuid.h"
14 #include "crypto/random.h"
15 #include "crypto/dh_group5.h"
16 #include "common/ieee802_11_defs.h"
17 #include "common/ieee802_11_common.h"
18 #include "common/wpa_common.h"
19 #include "common/wpa_ctrl.h"
20 #include "eap_common/eap_wsc_common.h"
21 #include "eap_peer/eap.h"
22 #include "eapol_supp/eapol_supp_sm.h"
23 #include "rsn_supp/wpa.h"
24 #include "wps/wps_attr_parse.h"
25 #include "config.h"
26 #include "wpa_supplicant_i.h"
27 #include "driver_i.h"
28 #include "notify.h"
29 #include "blacklist.h"
30 #include "bss.h"
31 #include "scan.h"
32 #include "ap.h"
33 #include "p2p/p2p.h"
34 #include "p2p_supplicant.h"
35 #include "wps_supplicant.h"
36
37
38 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
39 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
40 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
41
42 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
43 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
44
45
46 static void wpas_wps_clear_ap_info(struct wpa_supplicant *wpa_s)
47 {
48 os_free(wpa_s->wps_ap);
49 wpa_s->wps_ap = NULL;
50 wpa_s->num_wps_ap = 0;
51 wpa_s->wps_ap_iter = 0;
52 }
53
54
55 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
56 {
57 if (!wpa_s->wps_success &&
58 wpa_s->current_ssid &&
59 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
60 const u8 *bssid = wpa_s->bssid;
61 if (is_zero_ether_addr(bssid))
62 bssid = wpa_s->pending_bssid;
63
64 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
65 " did not succeed - continue trying to find "
66 "suitable AP", MAC2STR(bssid));
67 wpa_blacklist_add(wpa_s, bssid);
68
69 wpa_supplicant_deauthenticate(wpa_s,
70 WLAN_REASON_DEAUTH_LEAVING);
71 wpa_s->reassociate = 1;
72 wpa_supplicant_req_scan(wpa_s,
73 wpa_s->blacklist_cleared ? 5 : 0, 0);
74 wpa_s->blacklist_cleared = 0;
75 return 1;
76 }
77
78 wpas_wps_clear_ap_info(wpa_s);
79 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
80 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success)
81 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL);
82
83 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
84 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
85 int disabled = wpa_s->current_ssid->disabled;
86 unsigned int freq = wpa_s->assoc_freq;
87 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
88 "try to associate with the received credential "
89 "(freq=%u)", freq);
90 wpa_supplicant_deauthenticate(wpa_s,
91 WLAN_REASON_DEAUTH_LEAVING);
92 if (disabled) {
93 wpa_printf(MSG_DEBUG, "WPS: Current network is "
94 "disabled - wait for user to enable");
95 return 1;
96 }
97 wpa_s->after_wps = 5;
98 wpa_s->wps_freq = freq;
99 wpa_s->normal_scans = 0;
100 wpa_s->reassociate = 1;
101 wpa_supplicant_req_scan(wpa_s, 0, 0);
102 return 1;
103 }
104
105 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
106 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
107 "for external credential processing");
108 wpas_clear_wps(wpa_s);
109 wpa_supplicant_deauthenticate(wpa_s,
110 WLAN_REASON_DEAUTH_LEAVING);
111 return 1;
112 }
113
114 return 0;
115 }
116
117
118 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
119 struct wpa_ssid *ssid,
120 const struct wps_credential *cred)
121 {
122 struct wpa_driver_capa capa;
123 struct wpa_bss *bss;
124 const u8 *ie;
125 struct wpa_ie_data adv;
126 int wpa2 = 0, ccmp = 0;
127
128 /*
129 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
130 * case they are configured for mixed mode operation (WPA+WPA2 and
131 * TKIP+CCMP). Try to use scan results to figure out whether the AP
132 * actually supports stronger security and select that if the client
133 * has support for it, too.
134 */
135
136 if (wpa_drv_get_capa(wpa_s, &capa))
137 return; /* Unknown what driver supports */
138
139 if (ssid->ssid == NULL)
140 return;
141 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
142 if (bss == NULL) {
143 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
144 "table - use credential as-is");
145 return;
146 }
147
148 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
149
150 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
151 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
152 wpa2 = 1;
153 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
154 ccmp = 1;
155 } else {
156 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
157 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
158 adv.pairwise_cipher & WPA_CIPHER_CCMP)
159 ccmp = 1;
160 }
161
162 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
163 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
164 /*
165 * TODO: This could be the initial AP configuration and the
166 * Beacon contents could change shortly. Should request a new
167 * scan and delay addition of the network until the updated
168 * scan results are available.
169 */
170 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
171 "support - use credential as-is");
172 return;
173 }
174
175 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
176 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
177 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
178 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
179 "based on scan results");
180 if (wpa_s->conf->ap_scan == 1)
181 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
182 else
183 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
184 }
185
186 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
187 (ssid->proto & WPA_PROTO_WPA) &&
188 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
189 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
190 "based on scan results");
191 if (wpa_s->conf->ap_scan == 1)
192 ssid->proto |= WPA_PROTO_RSN;
193 else
194 ssid->proto = WPA_PROTO_RSN;
195 }
196 }
197
198
199 static int wpa_supplicant_wps_cred(void *ctx,
200 const struct wps_credential *cred)
201 {
202 struct wpa_supplicant *wpa_s = ctx;
203 struct wpa_ssid *ssid = wpa_s->current_ssid;
204 u8 key_idx = 0;
205 u16 auth_type;
206 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
207 int registrar = 0;
208 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
209
210 if ((wpa_s->conf->wps_cred_processing == 1 ||
211 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
212 size_t blen = cred->cred_attr_len * 2 + 1;
213 char *buf = os_malloc(blen);
214 if (buf) {
215 wpa_snprintf_hex(buf, blen,
216 cred->cred_attr, cred->cred_attr_len);
217 wpa_msg(wpa_s, MSG_INFO, "%s%s",
218 WPS_EVENT_CRED_RECEIVED, buf);
219 os_free(buf);
220 }
221
222 wpas_notify_wps_credential(wpa_s, cred);
223 } else
224 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
225
226 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
227 cred->cred_attr, cred->cred_attr_len);
228
229 if (wpa_s->conf->wps_cred_processing == 1)
230 return 0;
231
232 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
233 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
234 cred->auth_type);
235 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
236 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
237 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
238 cred->key, cred->key_len);
239 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
240 MAC2STR(cred->mac_addr));
241
242 auth_type = cred->auth_type;
243 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
244 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
245 "auth_type into WPA2PSK");
246 auth_type = WPS_AUTH_WPA2PSK;
247 }
248
249 if (auth_type != WPS_AUTH_OPEN &&
250 auth_type != WPS_AUTH_SHARED &&
251 auth_type != WPS_AUTH_WPAPSK &&
252 auth_type != WPS_AUTH_WPA2PSK) {
253 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
254 "unsupported authentication type 0x%x",
255 auth_type);
256 return 0;
257 }
258
259 if (auth_type == WPS_AUTH_WPAPSK || auth_type == WPS_AUTH_WPA2PSK) {
260 if (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN) {
261 wpa_printf(MSG_ERROR, "WPS: Reject PSK credential with "
262 "invalid Network Key length %lu",
263 (unsigned long) cred->key_len);
264 return -1;
265 }
266 }
267
268 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
269 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
270 "on the received credential");
271 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
272 if (ssid->eap.identity &&
273 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
274 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
275 WSC_ID_REGISTRAR_LEN) == 0)
276 registrar = 1;
277 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
278 os_free(ssid->eap.identity);
279 ssid->eap.identity = NULL;
280 ssid->eap.identity_len = 0;
281 os_free(ssid->eap.phase1);
282 ssid->eap.phase1 = NULL;
283 os_free(ssid->eap.eap_methods);
284 ssid->eap.eap_methods = NULL;
285 if (!ssid->p2p_group) {
286 ssid->temporary = 0;
287 ssid->bssid_set = 0;
288 }
289 ssid->disabled_until.sec = 0;
290 ssid->disabled_until.usec = 0;
291 ssid->auth_failures = 0;
292 } else {
293 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
294 "received credential");
295 ssid = wpa_config_add_network(wpa_s->conf);
296 if (ssid == NULL)
297 return -1;
298 wpas_notify_network_added(wpa_s, ssid);
299 }
300
301 wpa_config_set_network_defaults(ssid);
302
303 os_free(ssid->ssid);
304 ssid->ssid = os_malloc(cred->ssid_len);
305 if (ssid->ssid) {
306 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
307 ssid->ssid_len = cred->ssid_len;
308 }
309
310 switch (cred->encr_type) {
311 case WPS_ENCR_NONE:
312 break;
313 case WPS_ENCR_WEP:
314 if (cred->key_len <= 0)
315 break;
316 if (cred->key_len != 5 && cred->key_len != 13 &&
317 cred->key_len != 10 && cred->key_len != 26) {
318 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
319 "%lu", (unsigned long) cred->key_len);
320 return -1;
321 }
322 if (cred->key_idx > NUM_WEP_KEYS) {
323 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
324 cred->key_idx);
325 return -1;
326 }
327 if (cred->key_idx)
328 key_idx = cred->key_idx - 1;
329 if (cred->key_len == 10 || cred->key_len == 26) {
330 if (hexstr2bin((char *) cred->key,
331 ssid->wep_key[key_idx],
332 cred->key_len / 2) < 0) {
333 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
334 "%d", key_idx);
335 return -1;
336 }
337 ssid->wep_key_len[key_idx] = cred->key_len / 2;
338 } else {
339 os_memcpy(ssid->wep_key[key_idx], cred->key,
340 cred->key_len);
341 ssid->wep_key_len[key_idx] = cred->key_len;
342 }
343 ssid->wep_tx_keyidx = key_idx;
344 break;
345 case WPS_ENCR_TKIP:
346 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
347 break;
348 case WPS_ENCR_AES:
349 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
350 break;
351 }
352
353 switch (auth_type) {
354 case WPS_AUTH_OPEN:
355 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
356 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
357 ssid->proto = 0;
358 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
359 if (registrar) {
360 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
361 "id=%d - Credentials for an open "
362 "network disabled by default - use "
363 "'select_network %d' to enable",
364 ssid->id, ssid->id);
365 ssid->disabled = 1;
366 }
367 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
368 break;
369 case WPS_AUTH_SHARED:
370 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
371 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
372 ssid->proto = 0;
373 break;
374 case WPS_AUTH_WPAPSK:
375 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
376 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
377 ssid->proto = WPA_PROTO_WPA;
378 break;
379 case WPS_AUTH_WPA2PSK:
380 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
381 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
382 ssid->proto = WPA_PROTO_RSN;
383 break;
384 }
385
386 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
387 if (cred->key_len == 2 * PMK_LEN) {
388 if (hexstr2bin((const char *) cred->key, ssid->psk,
389 PMK_LEN)) {
390 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
391 "Key");
392 return -1;
393 }
394 ssid->psk_set = 1;
395 ssid->export_keys = 1;
396 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
397 os_free(ssid->passphrase);
398 ssid->passphrase = os_malloc(cred->key_len + 1);
399 if (ssid->passphrase == NULL)
400 return -1;
401 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
402 ssid->passphrase[cred->key_len] = '\0';
403 wpa_config_update_psk(ssid);
404 ssid->export_keys = 1;
405 } else {
406 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
407 "length %lu",
408 (unsigned long) cred->key_len);
409 return -1;
410 }
411 }
412
413 wpas_wps_security_workaround(wpa_s, ssid, cred);
414
415 if (cred->ap_channel)
416 wpa_s->wps_ap_channel = cred->ap_channel;
417
418 #ifndef CONFIG_NO_CONFIG_WRITE
419 if (wpa_s->conf->update_config &&
420 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
421 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
422 return -1;
423 }
424 #endif /* CONFIG_NO_CONFIG_WRITE */
425
426 /*
427 * Optimize the post-WPS scan based on the channel used during
428 * the provisioning in case EAP-Failure is not received.
429 */
430 wpa_s->after_wps = 5;
431 wpa_s->wps_freq = wpa_s->assoc_freq;
432
433 return 0;
434 }
435
436
437 #ifdef CONFIG_P2P
438 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
439 {
440 struct wpa_supplicant *wpa_s = eloop_ctx;
441 wpas_p2p_notif_pbc_overlap(wpa_s);
442 }
443 #endif /* CONFIG_P2P */
444
445
446 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
447 struct wps_event_m2d *m2d)
448 {
449 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
450 "dev_password_id=%d config_error=%d",
451 m2d->dev_password_id, m2d->config_error);
452 wpas_notify_wps_event_m2d(wpa_s, m2d);
453 #ifdef CONFIG_P2P
454 if (wpa_s->parent && wpa_s->parent != wpa_s) {
455 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
456 "dev_password_id=%d config_error=%d",
457 m2d->dev_password_id, m2d->config_error);
458 }
459 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
460 /*
461 * Notify P2P from eloop timeout to avoid issues with the
462 * interface getting removed while processing a message.
463 */
464 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
465 NULL);
466 }
467 #endif /* CONFIG_P2P */
468 }
469
470
471 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
472 "No Error", /* WPS_EI_NO_ERROR */
473 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
474 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
475 };
476
477 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
478 struct wps_event_fail *fail)
479 {
480 if (fail->error_indication > 0 &&
481 fail->error_indication < NUM_WPS_EI_VALUES) {
482 wpa_msg(wpa_s, MSG_INFO,
483 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
484 fail->msg, fail->config_error, fail->error_indication,
485 wps_event_fail_reason[fail->error_indication]);
486 if (wpa_s->parent && wpa_s->parent != wpa_s)
487 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
488 "msg=%d config_error=%d reason=%d (%s)",
489 fail->msg, fail->config_error,
490 fail->error_indication,
491 wps_event_fail_reason[fail->error_indication]);
492 } else {
493 wpa_msg(wpa_s, MSG_INFO,
494 WPS_EVENT_FAIL "msg=%d config_error=%d",
495 fail->msg, fail->config_error);
496 if (wpa_s->parent && wpa_s->parent != wpa_s)
497 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
498 "msg=%d config_error=%d",
499 fail->msg, fail->config_error);
500 }
501 wpas_clear_wps(wpa_s);
502 wpas_notify_wps_event_fail(wpa_s, fail);
503 #ifdef CONFIG_P2P
504 wpas_p2p_wps_failed(wpa_s, fail);
505 #endif /* CONFIG_P2P */
506 }
507
508
509 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx);
510
511 static void wpas_wps_reenable_networks(struct wpa_supplicant *wpa_s)
512 {
513 struct wpa_ssid *ssid;
514 int changed = 0;
515
516 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
517
518 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
519 if (ssid->disabled_for_connect && ssid->disabled) {
520 ssid->disabled_for_connect = 0;
521 ssid->disabled = 0;
522 wpas_notify_network_enabled_changed(wpa_s, ssid);
523 changed++;
524 }
525 }
526
527 if (changed) {
528 #ifndef CONFIG_NO_CONFIG_WRITE
529 if (wpa_s->conf->update_config &&
530 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
531 wpa_printf(MSG_DEBUG, "WPS: Failed to update "
532 "configuration");
533 }
534 #endif /* CONFIG_NO_CONFIG_WRITE */
535 }
536 }
537
538
539 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
540 {
541 struct wpa_supplicant *wpa_s = eloop_ctx;
542 /* Enable the networks disabled during wpas_wps_reassoc */
543 wpas_wps_reenable_networks(wpa_s);
544 }
545
546
547 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
548 {
549 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
550 wpa_s->wps_success = 1;
551 wpas_notify_wps_event_success(wpa_s);
552
553 /*
554 * Enable the networks disabled during wpas_wps_reassoc after 10
555 * seconds. The 10 seconds timer is to allow the data connection to be
556 * formed before allowing other networks to be selected.
557 */
558 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
559 NULL);
560
561 #ifdef CONFIG_P2P
562 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
563 #endif /* CONFIG_P2P */
564 }
565
566
567 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
568 struct wps_event_er_ap *ap)
569 {
570 char uuid_str[100];
571 char dev_type[WPS_DEV_TYPE_BUFSIZE];
572
573 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
574 if (ap->pri_dev_type)
575 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
576 sizeof(dev_type));
577 else
578 dev_type[0] = '\0';
579
580 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
581 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
582 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
583 ap->friendly_name ? ap->friendly_name : "",
584 ap->manufacturer ? ap->manufacturer : "",
585 ap->model_description ? ap->model_description : "",
586 ap->model_name ? ap->model_name : "",
587 ap->manufacturer_url ? ap->manufacturer_url : "",
588 ap->model_url ? ap->model_url : "");
589 }
590
591
592 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
593 struct wps_event_er_ap *ap)
594 {
595 char uuid_str[100];
596 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
597 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
598 }
599
600
601 static void wpa_supplicant_wps_event_er_enrollee_add(
602 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
603 {
604 char uuid_str[100];
605 char dev_type[WPS_DEV_TYPE_BUFSIZE];
606
607 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
608 if (enrollee->pri_dev_type)
609 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
610 sizeof(dev_type));
611 else
612 dev_type[0] = '\0';
613
614 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
615 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
616 "|%s|%s|%s|%s|%s|",
617 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
618 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
619 enrollee->dev_name ? enrollee->dev_name : "",
620 enrollee->manufacturer ? enrollee->manufacturer : "",
621 enrollee->model_name ? enrollee->model_name : "",
622 enrollee->model_number ? enrollee->model_number : "",
623 enrollee->serial_number ? enrollee->serial_number : "");
624 }
625
626
627 static void wpa_supplicant_wps_event_er_enrollee_remove(
628 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
629 {
630 char uuid_str[100];
631 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
632 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
633 uuid_str, MAC2STR(enrollee->mac_addr));
634 }
635
636
637 static void wpa_supplicant_wps_event_er_ap_settings(
638 struct wpa_supplicant *wpa_s,
639 struct wps_event_er_ap_settings *ap_settings)
640 {
641 char uuid_str[100];
642 char key_str[65];
643 const struct wps_credential *cred = ap_settings->cred;
644
645 key_str[0] = '\0';
646 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
647 if (cred->key_len >= 8 && cred->key_len <= 64) {
648 os_memcpy(key_str, cred->key, cred->key_len);
649 key_str[cred->key_len] = '\0';
650 }
651 }
652
653 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
654 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
655 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
656 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
657 "key=%s",
658 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
659 cred->auth_type, cred->encr_type, key_str);
660 }
661
662
663 static void wpa_supplicant_wps_event_er_set_sel_reg(
664 struct wpa_supplicant *wpa_s,
665 struct wps_event_er_set_selected_registrar *ev)
666 {
667 char uuid_str[100];
668
669 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
670 switch (ev->state) {
671 case WPS_ER_SET_SEL_REG_START:
672 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
673 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
674 "sel_reg_config_methods=0x%x",
675 uuid_str, ev->sel_reg, ev->dev_passwd_id,
676 ev->sel_reg_config_methods);
677 break;
678 case WPS_ER_SET_SEL_REG_DONE:
679 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
680 "uuid=%s state=DONE", uuid_str);
681 break;
682 case WPS_ER_SET_SEL_REG_FAILED:
683 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
684 "uuid=%s state=FAILED", uuid_str);
685 break;
686 }
687 }
688
689
690 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
691 union wps_event_data *data)
692 {
693 struct wpa_supplicant *wpa_s = ctx;
694 switch (event) {
695 case WPS_EV_M2D:
696 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
697 break;
698 case WPS_EV_FAIL:
699 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
700 break;
701 case WPS_EV_SUCCESS:
702 wpa_supplicant_wps_event_success(wpa_s);
703 break;
704 case WPS_EV_PWD_AUTH_FAIL:
705 #ifdef CONFIG_AP
706 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
707 wpa_supplicant_ap_pwd_auth_fail(wpa_s);
708 #endif /* CONFIG_AP */
709 break;
710 case WPS_EV_PBC_OVERLAP:
711 break;
712 case WPS_EV_PBC_TIMEOUT:
713 break;
714 case WPS_EV_ER_AP_ADD:
715 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
716 break;
717 case WPS_EV_ER_AP_REMOVE:
718 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
719 break;
720 case WPS_EV_ER_ENROLLEE_ADD:
721 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
722 &data->enrollee);
723 break;
724 case WPS_EV_ER_ENROLLEE_REMOVE:
725 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
726 &data->enrollee);
727 break;
728 case WPS_EV_ER_AP_SETTINGS:
729 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
730 &data->ap_settings);
731 break;
732 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
733 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
734 &data->set_sel_reg);
735 break;
736 case WPS_EV_AP_PIN_SUCCESS:
737 break;
738 }
739 }
740
741
742 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
743 {
744 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
745 eap_is_wps_pin_enrollee(&ssid->eap))
746 return WPS_REQ_ENROLLEE;
747 else
748 return WPS_REQ_REGISTRAR;
749 }
750
751
752 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
753 {
754 int id;
755 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
756
757 prev_current = wpa_s->current_ssid;
758
759 /* Enable the networks disabled during wpas_wps_reassoc */
760 wpas_wps_reenable_networks(wpa_s);
761
762 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
763
764 /* Remove any existing WPS network from configuration */
765 ssid = wpa_s->conf->ssid;
766 while (ssid) {
767 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
768 if (ssid == wpa_s->current_ssid) {
769 wpa_s->current_ssid = NULL;
770 if (ssid != NULL)
771 wpas_notify_network_changed(wpa_s);
772 }
773 id = ssid->id;
774 remove_ssid = ssid;
775 } else
776 id = -1;
777 ssid = ssid->next;
778 if (id >= 0) {
779 if (prev_current == remove_ssid) {
780 wpa_sm_set_config(wpa_s->wpa, NULL);
781 eapol_sm_notify_config(wpa_s->eapol, NULL,
782 NULL);
783 }
784 wpas_notify_network_removed(wpa_s, remove_ssid);
785 wpa_config_remove_network(wpa_s->conf, id);
786 }
787 }
788
789 wpas_wps_clear_ap_info(wpa_s);
790 }
791
792
793 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
794 {
795 struct wpa_supplicant *wpa_s = eloop_ctx;
796 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
797 "out");
798 wpas_clear_wps(wpa_s);
799 }
800
801
802 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
803 int registrar, const u8 *bssid)
804 {
805 struct wpa_ssid *ssid;
806
807 ssid = wpa_config_add_network(wpa_s->conf);
808 if (ssid == NULL)
809 return NULL;
810 wpas_notify_network_added(wpa_s, ssid);
811 wpa_config_set_network_defaults(ssid);
812 ssid->temporary = 1;
813 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
814 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
815 wpa_config_set(ssid, "identity", registrar ?
816 "\"" WSC_ID_REGISTRAR "\"" :
817 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
818 wpas_notify_network_removed(wpa_s, ssid);
819 wpa_config_remove_network(wpa_s->conf, ssid->id);
820 return NULL;
821 }
822
823 if (bssid) {
824 #ifndef CONFIG_P2P
825 struct wpa_bss *bss;
826 int count = 0;
827 #endif /* CONFIG_P2P */
828
829 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
830 ssid->bssid_set = 1;
831
832 /*
833 * Note: With P2P, the SSID may change at the time the WPS
834 * provisioning is started, so better not filter the AP based
835 * on the current SSID in the scan results.
836 */
837 #ifndef CONFIG_P2P
838 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
839 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
840 continue;
841
842 os_free(ssid->ssid);
843 ssid->ssid = os_malloc(bss->ssid_len);
844 if (ssid->ssid == NULL)
845 break;
846 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
847 ssid->ssid_len = bss->ssid_len;
848 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
849 "scan results",
850 ssid->ssid, ssid->ssid_len);
851 count++;
852 }
853
854 if (count > 1) {
855 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
856 "for the AP; use wildcard");
857 os_free(ssid->ssid);
858 ssid->ssid = NULL;
859 ssid->ssid_len = 0;
860 }
861 #endif /* CONFIG_P2P */
862 }
863
864 return ssid;
865 }
866
867
868 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
869 struct wpa_ssid *selected, const u8 *bssid)
870 {
871 struct wpa_ssid *ssid;
872 struct wpa_bss *bss;
873
874 wpa_s->known_wps_freq = 0;
875 if (bssid) {
876 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
877 if (bss && bss->freq > 0) {
878 wpa_s->known_wps_freq = 1;
879 wpa_s->wps_freq = bss->freq;
880 }
881 }
882
883 if (wpa_s->current_ssid)
884 wpa_supplicant_deauthenticate(
885 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
886
887 /* Mark all other networks disabled and trigger reassociation */
888 ssid = wpa_s->conf->ssid;
889 while (ssid) {
890 int was_disabled = ssid->disabled;
891 ssid->disabled_for_connect = 0;
892 /*
893 * In case the network object corresponds to a persistent group
894 * then do not send out network disabled signal. In addition,
895 * do not change disabled status of persistent network objects
896 * from 2 to 1 should we connect to another network.
897 */
898 if (was_disabled != 2) {
899 ssid->disabled = ssid != selected;
900 if (was_disabled != ssid->disabled) {
901 if (ssid->disabled)
902 ssid->disabled_for_connect = 1;
903 wpas_notify_network_enabled_changed(wpa_s,
904 ssid);
905 }
906 }
907 ssid = ssid->next;
908 }
909 wpa_s->disconnected = 0;
910 wpa_s->reassociate = 1;
911 wpa_s->scan_runs = 0;
912 wpa_s->normal_scans = 0;
913 wpa_s->wps_success = 0;
914 wpa_s->blacklist_cleared = 0;
915 wpa_supplicant_req_scan(wpa_s, 0, 0);
916 }
917
918
919 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
920 int p2p_group)
921 {
922 struct wpa_ssid *ssid;
923 wpas_clear_wps(wpa_s);
924 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
925 if (ssid == NULL)
926 return -1;
927 ssid->temporary = 1;
928 ssid->p2p_group = p2p_group;
929 #ifdef CONFIG_P2P
930 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
931 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
932 if (ssid->ssid) {
933 ssid->ssid_len = wpa_s->go_params->ssid_len;
934 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
935 ssid->ssid_len);
936 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
937 "SSID", ssid->ssid, ssid->ssid_len);
938 }
939 }
940 #endif /* CONFIG_P2P */
941 if (wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0) < 0)
942 return -1;
943 if (wpa_s->wps_fragment_size)
944 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
945 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
946 wpa_s, NULL);
947 wpas_wps_reassoc(wpa_s, ssid, bssid);
948 return 0;
949 }
950
951
952 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
953 const char *pin, int p2p_group, u16 dev_pw_id)
954 {
955 struct wpa_ssid *ssid;
956 char val[128];
957 unsigned int rpin = 0;
958
959 wpas_clear_wps(wpa_s);
960 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
961 if (ssid == NULL)
962 return -1;
963 ssid->temporary = 1;
964 ssid->p2p_group = p2p_group;
965 #ifdef CONFIG_P2P
966 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
967 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
968 if (ssid->ssid) {
969 ssid->ssid_len = wpa_s->go_params->ssid_len;
970 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
971 ssid->ssid_len);
972 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
973 "SSID", ssid->ssid, ssid->ssid_len);
974 }
975 }
976 #endif /* CONFIG_P2P */
977 if (pin)
978 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
979 pin, dev_pw_id);
980 else {
981 rpin = wps_generate_pin();
982 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
983 rpin, dev_pw_id);
984 }
985 if (wpa_config_set(ssid, "phase1", val, 0) < 0)
986 return -1;
987 if (wpa_s->wps_fragment_size)
988 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
989 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
990 wpa_s, NULL);
991 wpa_s->wps_ap_iter = 1;
992 wpas_wps_reassoc(wpa_s, ssid, bssid);
993 return rpin;
994 }
995
996
997 /* Cancel the wps pbc/pin requests */
998 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
999 {
1000 #ifdef CONFIG_AP
1001 if (wpa_s->ap_iface) {
1002 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
1003 return wpa_supplicant_ap_wps_cancel(wpa_s);
1004 }
1005 #endif /* CONFIG_AP */
1006
1007 if (wpa_s->wpa_state == WPA_SCANNING ||
1008 wpa_s->wpa_state == WPA_DISCONNECTED) {
1009 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
1010 wpa_supplicant_cancel_scan(wpa_s);
1011 wpas_clear_wps(wpa_s);
1012 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
1013 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1014 "deauthenticate");
1015 wpa_supplicant_deauthenticate(wpa_s,
1016 WLAN_REASON_DEAUTH_LEAVING);
1017 wpas_clear_wps(wpa_s);
1018 } else {
1019 wpas_wps_reenable_networks(wpa_s);
1020 wpas_wps_clear_ap_info(wpa_s);
1021 }
1022
1023 return 0;
1024 }
1025
1026
1027 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1028 const char *pin, struct wps_new_ap_settings *settings)
1029 {
1030 struct wpa_ssid *ssid;
1031 char val[200];
1032 char *pos, *end;
1033 int res;
1034
1035 if (!pin)
1036 return -1;
1037 wpas_clear_wps(wpa_s);
1038 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1039 if (ssid == NULL)
1040 return -1;
1041 ssid->temporary = 1;
1042 pos = val;
1043 end = pos + sizeof(val);
1044 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1045 if (res < 0 || res >= end - pos)
1046 return -1;
1047 pos += res;
1048 if (settings) {
1049 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1050 "new_encr=%s new_key=%s",
1051 settings->ssid_hex, settings->auth,
1052 settings->encr, settings->key_hex);
1053 if (res < 0 || res >= end - pos)
1054 return -1;
1055 pos += res;
1056 }
1057 res = os_snprintf(pos, end - pos, "\"");
1058 if (res < 0 || res >= end - pos)
1059 return -1;
1060 if (wpa_config_set(ssid, "phase1", val, 0) < 0)
1061 return -1;
1062 if (wpa_s->wps_fragment_size)
1063 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1064 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1065 wpa_s, NULL);
1066 wpas_wps_reassoc(wpa_s, ssid, bssid);
1067 return 0;
1068 }
1069
1070
1071 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1072 size_t psk_len)
1073 {
1074 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1075 "STA " MACSTR, MAC2STR(mac_addr));
1076 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1077
1078 /* TODO */
1079
1080 return 0;
1081 }
1082
1083
1084 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1085 const struct wps_device_data *dev)
1086 {
1087 char uuid[40], txt[400];
1088 int len;
1089 char devtype[WPS_DEV_TYPE_BUFSIZE];
1090 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1091 return;
1092 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1093 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1094 " [%s|%s|%s|%s|%s|%s]",
1095 uuid, MAC2STR(dev->mac_addr), dev->device_name,
1096 dev->manufacturer, dev->model_name,
1097 dev->model_number, dev->serial_number,
1098 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1099 sizeof(devtype)));
1100 if (len > 0 && len < (int) sizeof(txt))
1101 wpa_printf(MSG_INFO, "%s", txt);
1102 }
1103
1104
1105 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1106 u16 sel_reg_config_methods)
1107 {
1108 #ifdef CONFIG_WPS_ER
1109 struct wpa_supplicant *wpa_s = ctx;
1110
1111 if (wpa_s->wps_er == NULL)
1112 return;
1113 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1114 "dev_password_id=%u sel_reg_config_methods=0x%x",
1115 sel_reg, dev_passwd_id, sel_reg_config_methods);
1116 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1117 sel_reg_config_methods);
1118 #endif /* CONFIG_WPS_ER */
1119 }
1120
1121
1122 static u16 wps_fix_config_methods(u16 config_methods)
1123 {
1124 #ifdef CONFIG_WPS2
1125 if ((config_methods &
1126 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1127 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1128 wpa_printf(MSG_INFO, "WPS: Converting display to "
1129 "virtual_display for WPS 2.0 compliance");
1130 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1131 }
1132 if ((config_methods &
1133 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1134 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1135 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1136 "virtual_push_button for WPS 2.0 compliance");
1137 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1138 }
1139 #endif /* CONFIG_WPS2 */
1140
1141 return config_methods;
1142 }
1143
1144
1145 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1146 struct wps_context *wps)
1147 {
1148 wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1149 if (is_nil_uuid(wpa_s->conf->uuid)) {
1150 struct wpa_supplicant *first;
1151 first = wpa_s->global->ifaces;
1152 while (first && first->next)
1153 first = first->next;
1154 if (first && first != wpa_s) {
1155 if (wps != wpa_s->global->ifaces->wps)
1156 os_memcpy(wps->uuid,
1157 wpa_s->global->ifaces->wps->uuid,
1158 WPS_UUID_LEN);
1159 wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1160 "interface", wps->uuid, WPS_UUID_LEN);
1161 } else {
1162 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1163 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1164 "address", wps->uuid, WPS_UUID_LEN);
1165 }
1166 } else {
1167 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1168 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1169 wps->uuid, WPS_UUID_LEN);
1170 }
1171 }
1172
1173
1174 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1175 struct wps_context *wps)
1176 {
1177 wpabuf_free(wps->dev.vendor_ext_m1);
1178 wps->dev.vendor_ext_m1 = NULL;
1179
1180 if (wpa_s->conf->wps_vendor_ext_m1) {
1181 wps->dev.vendor_ext_m1 =
1182 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1183 if (!wps->dev.vendor_ext_m1) {
1184 wpa_printf(MSG_ERROR, "WPS: Cannot "
1185 "allocate memory for vendor_ext_m1");
1186 }
1187 }
1188 }
1189
1190
1191 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1192 {
1193 struct wps_context *wps;
1194 struct wps_registrar_config rcfg;
1195 struct hostapd_hw_modes *modes;
1196 u16 m;
1197
1198 wps = os_zalloc(sizeof(*wps));
1199 if (wps == NULL)
1200 return -1;
1201
1202 wps->cred_cb = wpa_supplicant_wps_cred;
1203 wps->event_cb = wpa_supplicant_wps_event;
1204 wps->cb_ctx = wpa_s;
1205
1206 wps->dev.device_name = wpa_s->conf->device_name;
1207 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1208 wps->dev.model_name = wpa_s->conf->model_name;
1209 wps->dev.model_number = wpa_s->conf->model_number;
1210 wps->dev.serial_number = wpa_s->conf->serial_number;
1211 wps->config_methods =
1212 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1213 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1214 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1215 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1216 "methods are not allowed at the same time");
1217 os_free(wps);
1218 return -1;
1219 }
1220 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1221 wps->dev.config_methods = wps->config_methods;
1222 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1223 WPS_DEV_TYPE_LEN);
1224
1225 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1226 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1227 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1228
1229 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1230
1231 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1232 modes = wpa_s->hw.modes;
1233 if (modes) {
1234 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1235 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1236 modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1237 wps->dev.rf_bands |= WPS_RF_24GHZ;
1238 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1239 wps->dev.rf_bands |= WPS_RF_50GHZ;
1240 }
1241 }
1242 if (wps->dev.rf_bands == 0) {
1243 /*
1244 * Default to claiming support for both bands if the driver
1245 * does not provide support for fetching supported bands.
1246 */
1247 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1248 }
1249 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1250 wpas_wps_set_uuid(wpa_s, wps);
1251
1252 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1253 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1254
1255 os_memset(&rcfg, 0, sizeof(rcfg));
1256 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1257 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1258 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1259 rcfg.cb_ctx = wpa_s;
1260
1261 wps->registrar = wps_registrar_init(wps, &rcfg);
1262 if (wps->registrar == NULL) {
1263 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1264 os_free(wps);
1265 return -1;
1266 }
1267
1268 wpa_s->wps = wps;
1269
1270 return 0;
1271 }
1272
1273
1274 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1275 {
1276 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1277 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1278 wpas_wps_clear_ap_info(wpa_s);
1279
1280 if (wpa_s->wps == NULL)
1281 return;
1282
1283 #ifdef CONFIG_WPS_ER
1284 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1285 wpa_s->wps_er = NULL;
1286 #endif /* CONFIG_WPS_ER */
1287
1288 wps_registrar_deinit(wpa_s->wps->registrar);
1289 wpabuf_free(wpa_s->wps->dh_pubkey);
1290 wpabuf_free(wpa_s->wps->dh_privkey);
1291 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1292 os_free(wpa_s->wps->network_key);
1293 os_free(wpa_s->wps);
1294 wpa_s->wps = NULL;
1295 }
1296
1297
1298 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1299 struct wpa_ssid *ssid, struct wpa_bss *bss)
1300 {
1301 struct wpabuf *wps_ie;
1302
1303 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1304 return -1;
1305
1306 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1307 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1308 if (!wps_ie) {
1309 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1310 return 0;
1311 }
1312
1313 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1314 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1315 "without active PBC Registrar");
1316 wpabuf_free(wps_ie);
1317 return 0;
1318 }
1319
1320 /* TODO: overlap detection */
1321 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1322 "(Active PBC)");
1323 wpabuf_free(wps_ie);
1324 return 1;
1325 }
1326
1327 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1328 if (!wps_ie) {
1329 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1330 return 0;
1331 }
1332
1333 /*
1334 * Start with WPS APs that advertise our address as an
1335 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1336 * allow any WPS AP after couple of scans since some APs do not
1337 * set Selected Registrar attribute properly when using
1338 * external Registrar.
1339 */
1340 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1341 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1342 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1343 "without active PIN Registrar");
1344 wpabuf_free(wps_ie);
1345 return 0;
1346 }
1347 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1348 } else {
1349 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1350 "(Authorized MAC or Active PIN)");
1351 }
1352 wpabuf_free(wps_ie);
1353 return 1;
1354 }
1355
1356 if (wps_ie) {
1357 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1358 wpabuf_free(wps_ie);
1359 return 1;
1360 }
1361
1362 return -1;
1363 }
1364
1365
1366 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1367 struct wpa_ssid *ssid,
1368 struct wpa_bss *bss)
1369 {
1370 struct wpabuf *wps_ie = NULL;
1371 int ret = 0;
1372
1373 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1374 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1375 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1376 /* allow wildcard SSID for WPS PBC */
1377 ret = 1;
1378 }
1379 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1380 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1381 if (wps_ie &&
1382 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1383 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1384 /* allow wildcard SSID for WPS PIN */
1385 ret = 1;
1386 }
1387 }
1388
1389 if (!ret && ssid->bssid_set &&
1390 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1391 /* allow wildcard SSID due to hardcoded BSSID match */
1392 ret = 1;
1393 }
1394
1395 #ifdef CONFIG_WPS_STRICT
1396 if (wps_ie) {
1397 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1398 0, bss->bssid) < 0)
1399 ret = 0;
1400 if (bss->beacon_ie_len) {
1401 struct wpabuf *bcn_wps;
1402 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1403 bss, WPS_IE_VENDOR_TYPE);
1404 if (bcn_wps == NULL) {
1405 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1406 "missing from AP Beacon");
1407 ret = 0;
1408 } else {
1409 if (wps_validate_beacon(wps_ie) < 0)
1410 ret = 0;
1411 wpabuf_free(bcn_wps);
1412 }
1413 }
1414 }
1415 #endif /* CONFIG_WPS_STRICT */
1416
1417 wpabuf_free(wps_ie);
1418
1419 return ret;
1420 }
1421
1422
1423 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1424 struct wpa_bss *selected, struct wpa_ssid *ssid)
1425 {
1426 const u8 *sel_uuid, *uuid;
1427 struct wpabuf *wps_ie;
1428 int ret = 0;
1429 struct wpa_bss *bss;
1430
1431 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1432 return 0;
1433
1434 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1435 "present in scan results; selected BSSID " MACSTR,
1436 MAC2STR(selected->bssid));
1437
1438 /* Make sure that only one AP is in active PBC mode */
1439 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1440 if (wps_ie) {
1441 sel_uuid = wps_get_uuid_e(wps_ie);
1442 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1443 sel_uuid, UUID_LEN);
1444 } else {
1445 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1446 "WPS IE?!");
1447 sel_uuid = NULL;
1448 }
1449
1450 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1451 struct wpabuf *ie;
1452 if (bss == selected)
1453 continue;
1454 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1455 if (!ie)
1456 continue;
1457 if (!wps_is_selected_pbc_registrar(ie)) {
1458 wpabuf_free(ie);
1459 continue;
1460 }
1461 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1462 MACSTR, MAC2STR(bss->bssid));
1463 uuid = wps_get_uuid_e(ie);
1464 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1465 uuid, UUID_LEN);
1466 if (sel_uuid == NULL || uuid == NULL ||
1467 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1468 ret = 1; /* PBC overlap */
1469 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1470 MACSTR " and " MACSTR,
1471 MAC2STR(selected->bssid),
1472 MAC2STR(bss->bssid));
1473 wpabuf_free(ie);
1474 break;
1475 }
1476
1477 /* TODO: verify that this is reasonable dual-band situation */
1478
1479 wpabuf_free(ie);
1480 }
1481
1482 wpabuf_free(wps_ie);
1483
1484 return ret;
1485 }
1486
1487
1488 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1489 {
1490 struct wpa_bss *bss;
1491 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1492
1493 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1494 return;
1495
1496 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1497 struct wpabuf *ie;
1498 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1499 if (!ie)
1500 continue;
1501 if (wps_is_selected_pbc_registrar(ie))
1502 pbc++;
1503 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1504 auth++;
1505 else if (wps_is_selected_pin_registrar(ie))
1506 pin++;
1507 else
1508 wps++;
1509 wpabuf_free(ie);
1510 }
1511
1512 if (pbc)
1513 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1514 else if (auth)
1515 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1516 else if (pin)
1517 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1518 else if (wps)
1519 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1520 }
1521
1522
1523 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1524 {
1525 struct wpa_ssid *ssid;
1526
1527 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1528 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1529 return 1;
1530 }
1531
1532 return 0;
1533 }
1534
1535
1536 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1537 char *end)
1538 {
1539 struct wpabuf *wps_ie;
1540 int ret;
1541
1542 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1543 if (wps_ie == NULL)
1544 return 0;
1545
1546 ret = wps_attr_text(wps_ie, buf, end);
1547 wpabuf_free(wps_ie);
1548 return ret;
1549 }
1550
1551
1552 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1553 {
1554 #ifdef CONFIG_WPS_ER
1555 if (wpa_s->wps_er) {
1556 wps_er_refresh(wpa_s->wps_er);
1557 return 0;
1558 }
1559 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1560 if (wpa_s->wps_er == NULL)
1561 return -1;
1562 return 0;
1563 #else /* CONFIG_WPS_ER */
1564 return 0;
1565 #endif /* CONFIG_WPS_ER */
1566 }
1567
1568
1569 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1570 {
1571 #ifdef CONFIG_WPS_ER
1572 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1573 wpa_s->wps_er = NULL;
1574 #endif /* CONFIG_WPS_ER */
1575 return 0;
1576 }
1577
1578
1579 #ifdef CONFIG_WPS_ER
1580 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1581 const char *uuid, const char *pin)
1582 {
1583 u8 u[UUID_LEN];
1584 int any = 0;
1585
1586 if (os_strcmp(uuid, "any") == 0)
1587 any = 1;
1588 else if (uuid_str2bin(uuid, u))
1589 return -1;
1590 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1591 any ? NULL : u,
1592 (const u8 *) pin, os_strlen(pin), 300);
1593 }
1594
1595
1596 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1597 {
1598 u8 u[UUID_LEN];
1599
1600 if (uuid_str2bin(uuid, u))
1601 return -1;
1602 return wps_er_pbc(wpa_s->wps_er, u);
1603 }
1604
1605
1606 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1607 const char *pin)
1608 {
1609 u8 u[UUID_LEN];
1610
1611 if (uuid_str2bin(uuid, u))
1612 return -1;
1613 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1614 os_strlen(pin));
1615 }
1616
1617
1618 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1619 int id)
1620 {
1621 u8 u[UUID_LEN];
1622 struct wpa_ssid *ssid;
1623 struct wps_credential cred;
1624
1625 if (uuid_str2bin(uuid, u))
1626 return -1;
1627 ssid = wpa_config_get_network(wpa_s->conf, id);
1628 if (ssid == NULL || ssid->ssid == NULL)
1629 return -1;
1630
1631 os_memset(&cred, 0, sizeof(cred));
1632 if (ssid->ssid_len > 32)
1633 return -1;
1634 os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1635 cred.ssid_len = ssid->ssid_len;
1636 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1637 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1638 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1639 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1640 cred.encr_type = WPS_ENCR_AES;
1641 else
1642 cred.encr_type = WPS_ENCR_TKIP;
1643 if (ssid->passphrase) {
1644 cred.key_len = os_strlen(ssid->passphrase);
1645 if (cred.key_len >= 64)
1646 return -1;
1647 os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1648 } else if (ssid->psk_set) {
1649 cred.key_len = 32;
1650 os_memcpy(cred.key, ssid->psk, 32);
1651 } else
1652 return -1;
1653 } else {
1654 cred.auth_type = WPS_AUTH_OPEN;
1655 cred.encr_type = WPS_ENCR_NONE;
1656 }
1657 return wps_er_set_config(wpa_s->wps_er, u, &cred);
1658 }
1659
1660
1661 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1662 const char *pin, struct wps_new_ap_settings *settings)
1663 {
1664 u8 u[UUID_LEN];
1665 struct wps_credential cred;
1666 size_t len;
1667
1668 if (uuid_str2bin(uuid, u))
1669 return -1;
1670 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1671 settings->encr == NULL || settings->key_hex == NULL)
1672 return -1;
1673
1674 os_memset(&cred, 0, sizeof(cred));
1675 len = os_strlen(settings->ssid_hex);
1676 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1677 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1678 return -1;
1679 cred.ssid_len = len / 2;
1680
1681 len = os_strlen(settings->key_hex);
1682 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1683 hexstr2bin(settings->key_hex, cred.key, len / 2))
1684 return -1;
1685 cred.key_len = len / 2;
1686
1687 if (os_strcmp(settings->auth, "OPEN") == 0)
1688 cred.auth_type = WPS_AUTH_OPEN;
1689 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1690 cred.auth_type = WPS_AUTH_WPAPSK;
1691 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1692 cred.auth_type = WPS_AUTH_WPA2PSK;
1693 else
1694 return -1;
1695
1696 if (os_strcmp(settings->encr, "NONE") == 0)
1697 cred.encr_type = WPS_ENCR_NONE;
1698 else if (os_strcmp(settings->encr, "WEP") == 0)
1699 cred.encr_type = WPS_ENCR_WEP;
1700 else if (os_strcmp(settings->encr, "TKIP") == 0)
1701 cred.encr_type = WPS_ENCR_TKIP;
1702 else if (os_strcmp(settings->encr, "CCMP") == 0)
1703 cred.encr_type = WPS_ENCR_AES;
1704 else
1705 return -1;
1706
1707 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1708 os_strlen(pin), &cred);
1709 }
1710
1711
1712 #ifdef CONFIG_WPS_NFC
1713 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1714 int ndef, const char *uuid)
1715 {
1716 struct wpabuf *ret;
1717 u8 u[UUID_LEN];
1718
1719 if (!wpa_s->wps_er)
1720 return NULL;
1721
1722 if (uuid_str2bin(uuid, u))
1723 return NULL;
1724
1725 ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1726 if (ndef && ret) {
1727 struct wpabuf *tmp;
1728 tmp = ndef_build_wifi(ret);
1729 wpabuf_free(ret);
1730 if (tmp == NULL)
1731 return NULL;
1732 ret = tmp;
1733 }
1734
1735 return ret;
1736 }
1737 #endif /* CONFIG_WPS_NFC */
1738
1739
1740 static int callbacks_pending = 0;
1741
1742 static void wpas_wps_terminate_cb(void *ctx)
1743 {
1744 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1745 if (--callbacks_pending <= 0)
1746 eloop_terminate();
1747 }
1748 #endif /* CONFIG_WPS_ER */
1749
1750
1751 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1752 {
1753 #ifdef CONFIG_WPS_ER
1754 if (wpa_s->wps_er) {
1755 callbacks_pending++;
1756 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1757 wpa_s->wps_er = NULL;
1758 return 1;
1759 }
1760 #endif /* CONFIG_WPS_ER */
1761 return 0;
1762 }
1763
1764
1765 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1766 {
1767 struct wpa_ssid *ssid;
1768
1769 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1770 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1771 return 1;
1772 }
1773
1774 return 0;
1775 }
1776
1777
1778 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1779 {
1780 struct wps_context *wps = wpa_s->wps;
1781
1782 if (wps == NULL)
1783 return;
1784
1785 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1786 wps->config_methods = wps_config_methods_str2bin(
1787 wpa_s->conf->config_methods);
1788 if ((wps->config_methods &
1789 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1790 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1791 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1792 "config methods are not allowed at the "
1793 "same time");
1794 wps->config_methods &= ~WPS_CONFIG_LABEL;
1795 }
1796 }
1797 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1798 wps->dev.config_methods = wps->config_methods;
1799
1800 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1801 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1802 WPS_DEV_TYPE_LEN);
1803
1804 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1805 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1806 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1807 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1808 }
1809
1810 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1811 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1812
1813 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1814 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1815
1816 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1817 wpas_wps_set_uuid(wpa_s, wps);
1818
1819 if (wpa_s->conf->changed_parameters &
1820 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1821 /* Update pointers to make sure they refer current values */
1822 wps->dev.device_name = wpa_s->conf->device_name;
1823 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1824 wps->dev.model_name = wpa_s->conf->model_name;
1825 wps->dev.model_number = wpa_s->conf->model_number;
1826 wps->dev.serial_number = wpa_s->conf->serial_number;
1827 }
1828 }
1829
1830
1831 #ifdef CONFIG_WPS_NFC
1832
1833 struct wpabuf * wpas_wps_nfc_config_token(struct wpa_supplicant *wpa_s,
1834 int ndef)
1835 {
1836 #ifdef CONFIG_AP
1837 if (wpa_s->ap_iface)
1838 return wpas_ap_wps_nfc_config_token(wpa_s, ndef);
1839 #endif /* CONFIG_AP */
1840 return NULL;
1841 }
1842
1843
1844 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1845 {
1846 if (wpa_s->conf->wps_nfc_pw_from_config) {
1847 return wps_nfc_token_build(ndef,
1848 wpa_s->conf->wps_nfc_dev_pw_id,
1849 wpa_s->conf->wps_nfc_dh_pubkey,
1850 wpa_s->conf->wps_nfc_dev_pw);
1851 }
1852
1853 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1854 &wpa_s->conf->wps_nfc_dh_pubkey,
1855 &wpa_s->conf->wps_nfc_dh_privkey,
1856 &wpa_s->conf->wps_nfc_dev_pw);
1857 }
1858
1859
1860 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1861 {
1862 struct wps_context *wps = wpa_s->wps;
1863 char pw[32 * 2 + 1];
1864
1865 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1866 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1867 wpa_s->conf->wps_nfc_dev_pw == NULL)
1868 return -1;
1869
1870 dh5_free(wps->dh_ctx);
1871 wpabuf_free(wps->dh_pubkey);
1872 wpabuf_free(wps->dh_privkey);
1873 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1874 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1875 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1876 wps->dh_ctx = NULL;
1877 wpabuf_free(wps->dh_pubkey);
1878 wps->dh_pubkey = NULL;
1879 wpabuf_free(wps->dh_privkey);
1880 wps->dh_privkey = NULL;
1881 return -1;
1882 }
1883 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1884 if (wps->dh_ctx == NULL)
1885 return -1;
1886
1887 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1888 wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1889 wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1890 return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1891 wpa_s->conf->wps_nfc_dev_pw_id);
1892 }
1893
1894
1895 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1896 struct wps_parse_attr *attr)
1897 {
1898 wpa_s->wps_ap_channel = 0;
1899
1900 if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1901 return -1;
1902
1903 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1904 return 0;
1905
1906 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1907 "based on the received credential added");
1908 wpa_s->normal_scans = 0;
1909 wpa_supplicant_reinit_autoscan(wpa_s);
1910 if (wpa_s->wps_ap_channel) {
1911 u16 chan = wpa_s->wps_ap_channel;
1912 int freq = 0;
1913
1914 if (chan >= 1 && chan <= 13)
1915 freq = 2407 + 5 * chan;
1916 else if (chan == 14)
1917 freq = 2484;
1918 else if (chan >= 30)
1919 freq = 5000 + 5 * chan;
1920
1921 if (freq) {
1922 wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
1923 "AP channel %u -> %u MHz", chan, freq);
1924 wpa_s->after_wps = 5;
1925 wpa_s->wps_freq = freq;
1926 }
1927 }
1928 wpa_s->disconnected = 0;
1929 wpa_s->reassociate = 1;
1930 wpa_supplicant_req_scan(wpa_s, 0, 0);
1931
1932 return 0;
1933 }
1934
1935
1936 #ifdef CONFIG_WPS_ER
1937 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1938 struct wps_parse_attr *attr)
1939 {
1940 return wps_registrar_add_nfc_password_token(
1941 wpa_s->wps->registrar, attr->oob_dev_password,
1942 attr->oob_dev_password_len);
1943 }
1944 #endif /* CONFIG_WPS_ER */
1945
1946
1947 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1948 const struct wpabuf *wps)
1949 {
1950 struct wps_parse_attr attr;
1951
1952 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1953
1954 if (wps_parse_msg(wps, &attr)) {
1955 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1956 return -1;
1957 }
1958
1959 if (attr.num_cred)
1960 return wpas_wps_use_cred(wpa_s, &attr);
1961
1962 #ifdef CONFIG_WPS_ER
1963 if (attr.oob_dev_password)
1964 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1965 #endif /* CONFIG_WPS_ER */
1966
1967 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1968 return -1;
1969 }
1970
1971
1972 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1973 const struct wpabuf *data)
1974 {
1975 const struct wpabuf *wps = data;
1976 struct wpabuf *tmp = NULL;
1977 int ret;
1978
1979 if (wpabuf_len(data) < 4)
1980 return -1;
1981
1982 if (*wpabuf_head_u8(data) != 0x10) {
1983 /* Assume this contains full NDEF record */
1984 tmp = ndef_parse_wifi(data);
1985 if (tmp == NULL) {
1986 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1987 return -1;
1988 }
1989 wps = tmp;
1990 }
1991
1992 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1993 wpabuf_free(tmp);
1994 return ret;
1995 }
1996
1997
1998 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s, int cr)
1999 {
2000 if (cr)
2001 return ndef_build_wifi_hc(1);
2002 return ndef_build_wifi_hr();
2003 }
2004
2005
2006 #ifdef CONFIG_WPS_NFC
2007 struct wpabuf * wpas_wps_er_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2008 int ndef, const char *uuid)
2009 {
2010 #ifdef CONFIG_WPS_ER
2011 struct wpabuf *ret;
2012 u8 u[UUID_LEN];
2013
2014 if (!wpa_s->wps_er)
2015 return NULL;
2016
2017 if (uuid == NULL || uuid_str2bin(uuid, u))
2018 return NULL;
2019
2020 /*
2021 * Handover Select carrier record for WPS uses the same format as
2022 * configuration token.
2023 */
2024 ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
2025 if (ndef && ret) {
2026 struct wpabuf *tmp;
2027 tmp = ndef_build_wifi(ret);
2028 wpabuf_free(ret);
2029 if (tmp == NULL)
2030 return NULL;
2031 ret = tmp;
2032 }
2033
2034 return ret;
2035 #else /* CONFIG_WPS_ER */
2036 return NULL;
2037 #endif /* CONFIG_WPS_ER */
2038 }
2039 #endif /* CONFIG_WPS_NFC */
2040
2041
2042 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s,
2043 int ndef, int cr, const char *uuid)
2044 {
2045 struct wpabuf *ret;
2046 if (!cr)
2047 return NULL;
2048 ret = wpas_ap_wps_nfc_handover_sel(wpa_s, ndef);
2049 if (ret)
2050 return ret;
2051 return wpas_wps_er_nfc_handover_sel(wpa_s, ndef, uuid);
2052 }
2053
2054
2055 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
2056 const struct wpabuf *data)
2057 {
2058 /* TODO */
2059 return -1;
2060 }
2061
2062
2063 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
2064 const struct wpabuf *data)
2065 {
2066 struct wpabuf *wps;
2067 int ret;
2068
2069 wps = ndef_parse_wifi(data);
2070 if (wps == NULL)
2071 return -1;
2072 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
2073 "payload from NFC connection handover");
2074 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
2075 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
2076 wpabuf_free(wps);
2077
2078 return ret;
2079 }
2080
2081
2082 int wpas_wps_nfc_report_handover(struct wpa_supplicant *wpa_s,
2083 const struct wpabuf *req,
2084 const struct wpabuf *sel)
2085 {
2086 wpa_printf(MSG_DEBUG, "NFC: WPS connection handover reported");
2087 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in request", req);
2088 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: Carrier record in select", sel);
2089 return wpas_wps_nfc_rx_handover_sel(wpa_s, sel);
2090 }
2091
2092 #endif /* CONFIG_WPS_NFC */
2093
2094
2095 extern int wpa_debug_level;
2096
2097 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2098 {
2099 size_t i;
2100 struct os_time now;
2101
2102 if (wpa_debug_level > MSG_DEBUG)
2103 return;
2104
2105 if (wpa_s->wps_ap == NULL)
2106 return;
2107
2108 os_get_time(&now);
2109
2110 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2111 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2112 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2113
2114 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2115 "tries=%d last_attempt=%d sec ago blacklist=%d",
2116 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2117 ap->last_attempt.sec > 0 ?
2118 (int) now.sec - (int) ap->last_attempt.sec : -1,
2119 e ? e->count : 0);
2120 }
2121 }
2122
2123
2124 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2125 const u8 *bssid)
2126 {
2127 size_t i;
2128
2129 if (wpa_s->wps_ap == NULL)
2130 return NULL;
2131
2132 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2133 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2134 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2135 return ap;
2136 }
2137
2138 return NULL;
2139 }
2140
2141
2142 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2143 struct wpa_scan_res *res)
2144 {
2145 struct wpabuf *wps;
2146 enum wps_ap_info_type type;
2147 struct wps_ap_info *ap;
2148 int r;
2149
2150 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2151 return;
2152
2153 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2154 if (wps == NULL)
2155 return;
2156
2157 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2158 if (r == 2)
2159 type = WPS_AP_SEL_REG_OUR;
2160 else if (r == 1)
2161 type = WPS_AP_SEL_REG;
2162 else
2163 type = WPS_AP_NOT_SEL_REG;
2164
2165 wpabuf_free(wps);
2166
2167 ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2168 if (ap) {
2169 if (ap->type != type) {
2170 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2171 " changed type %d -> %d",
2172 MAC2STR(res->bssid), ap->type, type);
2173 ap->type = type;
2174 if (type != WPS_AP_NOT_SEL_REG)
2175 wpa_blacklist_del(wpa_s, ap->bssid);
2176 }
2177 return;
2178 }
2179
2180 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2181 sizeof(struct wps_ap_info));
2182 if (ap == NULL)
2183 return;
2184
2185 wpa_s->wps_ap = ap;
2186 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2187 wpa_s->num_wps_ap++;
2188
2189 os_memset(ap, 0, sizeof(*ap));
2190 os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2191 ap->type = type;
2192 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2193 MAC2STR(ap->bssid), ap->type);
2194 }
2195
2196
2197 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2198 struct wpa_scan_results *scan_res)
2199 {
2200 size_t i;
2201
2202 for (i = 0; i < scan_res->num; i++)
2203 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2204
2205 wpas_wps_dump_ap_info(wpa_s);
2206 }
2207
2208
2209 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2210 {
2211 struct wps_ap_info *ap;
2212 if (!wpa_s->wps_ap_iter)
2213 return;
2214 ap = wpas_wps_get_ap_info(wpa_s, bssid);
2215 if (ap == NULL)
2216 return;
2217 ap->tries++;
2218 os_get_time(&ap->last_attempt);
2219 }
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