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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
515 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
516
517 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
518 if (ssid->disabled_for_connect && ssid->disabled) {
519 ssid->disabled_for_connect = 0;
520 ssid->disabled = 0;
521 wpas_notify_network_enabled_changed(wpa_s, ssid);
522 }
523 }
524 }
525
526
527 static void wpas_wps_reenable_networks_cb(void *eloop_ctx, void *timeout_ctx)
528 {
529 struct wpa_supplicant *wpa_s = eloop_ctx;
530 /* Enable the networks disabled during wpas_wps_reassoc */
531 wpas_wps_reenable_networks(wpa_s);
532 }
533
534
535 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
536 {
537 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
538 wpa_s->wps_success = 1;
539 wpas_notify_wps_event_success(wpa_s);
540
541 /*
542 * Enable the networks disabled during wpas_wps_reassoc after 10
543 * seconds. The 10 seconds timer is to allow the data connection to be
544 * formed before allowing other networks to be selected.
545 */
546 eloop_register_timeout(10, 0, wpas_wps_reenable_networks_cb, wpa_s,
547 NULL);
548
549 #ifdef CONFIG_P2P
550 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
551 #endif /* CONFIG_P2P */
552 }
553
554
555 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
556 struct wps_event_er_ap *ap)
557 {
558 char uuid_str[100];
559 char dev_type[WPS_DEV_TYPE_BUFSIZE];
560
561 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
562 if (ap->pri_dev_type)
563 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
564 sizeof(dev_type));
565 else
566 dev_type[0] = '\0';
567
568 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
569 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
570 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
571 ap->friendly_name ? ap->friendly_name : "",
572 ap->manufacturer ? ap->manufacturer : "",
573 ap->model_description ? ap->model_description : "",
574 ap->model_name ? ap->model_name : "",
575 ap->manufacturer_url ? ap->manufacturer_url : "",
576 ap->model_url ? ap->model_url : "");
577 }
578
579
580 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
581 struct wps_event_er_ap *ap)
582 {
583 char uuid_str[100];
584 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
585 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
586 }
587
588
589 static void wpa_supplicant_wps_event_er_enrollee_add(
590 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
591 {
592 char uuid_str[100];
593 char dev_type[WPS_DEV_TYPE_BUFSIZE];
594
595 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
596 if (enrollee->pri_dev_type)
597 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
598 sizeof(dev_type));
599 else
600 dev_type[0] = '\0';
601
602 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
603 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
604 "|%s|%s|%s|%s|%s|",
605 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
606 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
607 enrollee->dev_name ? enrollee->dev_name : "",
608 enrollee->manufacturer ? enrollee->manufacturer : "",
609 enrollee->model_name ? enrollee->model_name : "",
610 enrollee->model_number ? enrollee->model_number : "",
611 enrollee->serial_number ? enrollee->serial_number : "");
612 }
613
614
615 static void wpa_supplicant_wps_event_er_enrollee_remove(
616 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
617 {
618 char uuid_str[100];
619 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
620 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
621 uuid_str, MAC2STR(enrollee->mac_addr));
622 }
623
624
625 static void wpa_supplicant_wps_event_er_ap_settings(
626 struct wpa_supplicant *wpa_s,
627 struct wps_event_er_ap_settings *ap_settings)
628 {
629 char uuid_str[100];
630 char key_str[65];
631 const struct wps_credential *cred = ap_settings->cred;
632
633 key_str[0] = '\0';
634 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
635 if (cred->key_len >= 8 && cred->key_len <= 64) {
636 os_memcpy(key_str, cred->key, cred->key_len);
637 key_str[cred->key_len] = '\0';
638 }
639 }
640
641 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
642 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
643 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
644 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
645 "key=%s",
646 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
647 cred->auth_type, cred->encr_type, key_str);
648 }
649
650
651 static void wpa_supplicant_wps_event_er_set_sel_reg(
652 struct wpa_supplicant *wpa_s,
653 struct wps_event_er_set_selected_registrar *ev)
654 {
655 char uuid_str[100];
656
657 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
658 switch (ev->state) {
659 case WPS_ER_SET_SEL_REG_START:
660 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
661 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
662 "sel_reg_config_methods=0x%x",
663 uuid_str, ev->sel_reg, ev->dev_passwd_id,
664 ev->sel_reg_config_methods);
665 break;
666 case WPS_ER_SET_SEL_REG_DONE:
667 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
668 "uuid=%s state=DONE", uuid_str);
669 break;
670 case WPS_ER_SET_SEL_REG_FAILED:
671 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
672 "uuid=%s state=FAILED", uuid_str);
673 break;
674 }
675 }
676
677
678 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
679 union wps_event_data *data)
680 {
681 struct wpa_supplicant *wpa_s = ctx;
682 switch (event) {
683 case WPS_EV_M2D:
684 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
685 break;
686 case WPS_EV_FAIL:
687 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
688 break;
689 case WPS_EV_SUCCESS:
690 wpa_supplicant_wps_event_success(wpa_s);
691 break;
692 case WPS_EV_PWD_AUTH_FAIL:
693 #ifdef CONFIG_AP
694 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
695 wpa_supplicant_ap_pwd_auth_fail(wpa_s);
696 #endif /* CONFIG_AP */
697 break;
698 case WPS_EV_PBC_OVERLAP:
699 break;
700 case WPS_EV_PBC_TIMEOUT:
701 break;
702 case WPS_EV_ER_AP_ADD:
703 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
704 break;
705 case WPS_EV_ER_AP_REMOVE:
706 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
707 break;
708 case WPS_EV_ER_ENROLLEE_ADD:
709 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
710 &data->enrollee);
711 break;
712 case WPS_EV_ER_ENROLLEE_REMOVE:
713 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
714 &data->enrollee);
715 break;
716 case WPS_EV_ER_AP_SETTINGS:
717 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
718 &data->ap_settings);
719 break;
720 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
721 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
722 &data->set_sel_reg);
723 break;
724 case WPS_EV_AP_PIN_SUCCESS:
725 break;
726 }
727 }
728
729
730 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
731 {
732 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
733 eap_is_wps_pin_enrollee(&ssid->eap))
734 return WPS_REQ_ENROLLEE;
735 else
736 return WPS_REQ_REGISTRAR;
737 }
738
739
740 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
741 {
742 int id;
743 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
744
745 prev_current = wpa_s->current_ssid;
746
747 /* Enable the networks disabled during wpas_wps_reassoc */
748 wpas_wps_reenable_networks(wpa_s);
749
750 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
751
752 /* Remove any existing WPS network from configuration */
753 ssid = wpa_s->conf->ssid;
754 while (ssid) {
755 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
756 if (ssid == wpa_s->current_ssid) {
757 wpa_s->current_ssid = NULL;
758 if (ssid != NULL)
759 wpas_notify_network_changed(wpa_s);
760 }
761 id = ssid->id;
762 remove_ssid = ssid;
763 } else
764 id = -1;
765 ssid = ssid->next;
766 if (id >= 0) {
767 if (prev_current == remove_ssid) {
768 wpa_sm_set_config(wpa_s->wpa, NULL);
769 eapol_sm_notify_config(wpa_s->eapol, NULL,
770 NULL);
771 }
772 wpas_notify_network_removed(wpa_s, remove_ssid);
773 wpa_config_remove_network(wpa_s->conf, id);
774 }
775 }
776
777 wpas_wps_clear_ap_info(wpa_s);
778 }
779
780
781 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
782 {
783 struct wpa_supplicant *wpa_s = eloop_ctx;
784 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
785 "out");
786 wpas_clear_wps(wpa_s);
787 }
788
789
790 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
791 int registrar, const u8 *bssid)
792 {
793 struct wpa_ssid *ssid;
794
795 ssid = wpa_config_add_network(wpa_s->conf);
796 if (ssid == NULL)
797 return NULL;
798 wpas_notify_network_added(wpa_s, ssid);
799 wpa_config_set_network_defaults(ssid);
800 ssid->temporary = 1;
801 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
802 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
803 wpa_config_set(ssid, "identity", registrar ?
804 "\"" WSC_ID_REGISTRAR "\"" :
805 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
806 wpas_notify_network_removed(wpa_s, ssid);
807 wpa_config_remove_network(wpa_s->conf, ssid->id);
808 return NULL;
809 }
810
811 if (bssid) {
812 #ifndef CONFIG_P2P
813 struct wpa_bss *bss;
814 int count = 0;
815 #endif /* CONFIG_P2P */
816
817 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
818 ssid->bssid_set = 1;
819
820 /*
821 * Note: With P2P, the SSID may change at the time the WPS
822 * provisioning is started, so better not filter the AP based
823 * on the current SSID in the scan results.
824 */
825 #ifndef CONFIG_P2P
826 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
827 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
828 continue;
829
830 os_free(ssid->ssid);
831 ssid->ssid = os_malloc(bss->ssid_len);
832 if (ssid->ssid == NULL)
833 break;
834 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
835 ssid->ssid_len = bss->ssid_len;
836 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
837 "scan results",
838 ssid->ssid, ssid->ssid_len);
839 count++;
840 }
841
842 if (count > 1) {
843 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
844 "for the AP; use wildcard");
845 os_free(ssid->ssid);
846 ssid->ssid = NULL;
847 ssid->ssid_len = 0;
848 }
849 #endif /* CONFIG_P2P */
850 }
851
852 return ssid;
853 }
854
855
856 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
857 struct wpa_ssid *selected, const u8 *bssid)
858 {
859 struct wpa_ssid *ssid;
860 struct wpa_bss *bss;
861
862 wpa_s->known_wps_freq = 0;
863 if (bssid) {
864 bss = wpa_bss_get_bssid(wpa_s, bssid);
865 if (bss && bss->freq > 0) {
866 wpa_s->known_wps_freq = 1;
867 wpa_s->wps_freq = bss->freq;
868 }
869 }
870
871 if (wpa_s->current_ssid)
872 wpa_supplicant_deauthenticate(
873 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
874
875 /* Mark all other networks disabled and trigger reassociation */
876 ssid = wpa_s->conf->ssid;
877 while (ssid) {
878 int was_disabled = ssid->disabled;
879 ssid->disabled_for_connect = 0;
880 /*
881 * In case the network object corresponds to a persistent group
882 * then do not send out network disabled signal. In addition,
883 * do not change disabled status of persistent network objects
884 * from 2 to 1 should we connect to another network.
885 */
886 if (was_disabled != 2) {
887 ssid->disabled = ssid != selected;
888 if (was_disabled != ssid->disabled) {
889 if (ssid->disabled)
890 ssid->disabled_for_connect = 1;
891 wpas_notify_network_enabled_changed(wpa_s,
892 ssid);
893 }
894 }
895 ssid = ssid->next;
896 }
897 wpa_s->disconnected = 0;
898 wpa_s->reassociate = 1;
899 wpa_s->scan_runs = 0;
900 wpa_s->normal_scans = 0;
901 wpa_s->wps_success = 0;
902 wpa_s->blacklist_cleared = 0;
903 wpa_supplicant_req_scan(wpa_s, 0, 0);
904 }
905
906
907 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
908 int p2p_group)
909 {
910 struct wpa_ssid *ssid;
911 wpas_clear_wps(wpa_s);
912 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
913 if (ssid == NULL)
914 return -1;
915 ssid->temporary = 1;
916 ssid->p2p_group = p2p_group;
917 #ifdef CONFIG_P2P
918 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
919 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
920 if (ssid->ssid) {
921 ssid->ssid_len = wpa_s->go_params->ssid_len;
922 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
923 ssid->ssid_len);
924 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
925 "SSID", ssid->ssid, ssid->ssid_len);
926 }
927 }
928 #endif /* CONFIG_P2P */
929 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
930 if (wpa_s->wps_fragment_size)
931 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
932 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
933 wpa_s, NULL);
934 wpas_wps_reassoc(wpa_s, ssid, bssid);
935 return 0;
936 }
937
938
939 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
940 const char *pin, int p2p_group, u16 dev_pw_id)
941 {
942 struct wpa_ssid *ssid;
943 char val[128];
944 unsigned int rpin = 0;
945
946 wpas_clear_wps(wpa_s);
947 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
948 if (ssid == NULL)
949 return -1;
950 ssid->temporary = 1;
951 ssid->p2p_group = p2p_group;
952 #ifdef CONFIG_P2P
953 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
954 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
955 if (ssid->ssid) {
956 ssid->ssid_len = wpa_s->go_params->ssid_len;
957 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
958 ssid->ssid_len);
959 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
960 "SSID", ssid->ssid, ssid->ssid_len);
961 }
962 }
963 #endif /* CONFIG_P2P */
964 if (pin)
965 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
966 pin, dev_pw_id);
967 else {
968 rpin = wps_generate_pin();
969 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
970 rpin, dev_pw_id);
971 }
972 wpa_config_set(ssid, "phase1", val, 0);
973 if (wpa_s->wps_fragment_size)
974 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
975 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
976 wpa_s, NULL);
977 wpa_s->wps_ap_iter = 1;
978 wpas_wps_reassoc(wpa_s, ssid, bssid);
979 return rpin;
980 }
981
982
983 /* Cancel the wps pbc/pin requests */
984 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
985 {
986 #ifdef CONFIG_AP
987 if (wpa_s->ap_iface) {
988 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
989 return wpa_supplicant_ap_wps_cancel(wpa_s);
990 }
991 #endif /* CONFIG_AP */
992
993 if (wpa_s->wpa_state == WPA_SCANNING ||
994 wpa_s->wpa_state == WPA_DISCONNECTED) {
995 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
996 wpa_supplicant_cancel_scan(wpa_s);
997 wpas_clear_wps(wpa_s);
998 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
999 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
1000 "deauthenticate");
1001 wpa_supplicant_deauthenticate(wpa_s,
1002 WLAN_REASON_DEAUTH_LEAVING);
1003 wpas_clear_wps(wpa_s);
1004 } else {
1005 wpas_wps_reenable_networks(wpa_s);
1006 wpas_wps_clear_ap_info(wpa_s);
1007 }
1008
1009 return 0;
1010 }
1011
1012
1013 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1014 const char *pin, struct wps_new_ap_settings *settings)
1015 {
1016 struct wpa_ssid *ssid;
1017 char val[200];
1018 char *pos, *end;
1019 int res;
1020
1021 if (!pin)
1022 return -1;
1023 wpas_clear_wps(wpa_s);
1024 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1025 if (ssid == NULL)
1026 return -1;
1027 ssid->temporary = 1;
1028 pos = val;
1029 end = pos + sizeof(val);
1030 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1031 if (res < 0 || res >= end - pos)
1032 return -1;
1033 pos += res;
1034 if (settings) {
1035 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1036 "new_encr=%s new_key=%s",
1037 settings->ssid_hex, settings->auth,
1038 settings->encr, settings->key_hex);
1039 if (res < 0 || res >= end - pos)
1040 return -1;
1041 pos += res;
1042 }
1043 res = os_snprintf(pos, end - pos, "\"");
1044 if (res < 0 || res >= end - pos)
1045 return -1;
1046 wpa_config_set(ssid, "phase1", val, 0);
1047 if (wpa_s->wps_fragment_size)
1048 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1049 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1050 wpa_s, NULL);
1051 wpas_wps_reassoc(wpa_s, ssid, bssid);
1052 return 0;
1053 }
1054
1055
1056 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1057 size_t psk_len)
1058 {
1059 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1060 "STA " MACSTR, MAC2STR(mac_addr));
1061 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1062
1063 /* TODO */
1064
1065 return 0;
1066 }
1067
1068
1069 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1070 const struct wps_device_data *dev)
1071 {
1072 char uuid[40], txt[400];
1073 int len;
1074 char devtype[WPS_DEV_TYPE_BUFSIZE];
1075 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1076 return;
1077 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1078 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1079 " [%s|%s|%s|%s|%s|%s]",
1080 uuid, MAC2STR(dev->mac_addr), dev->device_name,
1081 dev->manufacturer, dev->model_name,
1082 dev->model_number, dev->serial_number,
1083 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1084 sizeof(devtype)));
1085 if (len > 0 && len < (int) sizeof(txt))
1086 wpa_printf(MSG_INFO, "%s", txt);
1087 }
1088
1089
1090 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1091 u16 sel_reg_config_methods)
1092 {
1093 #ifdef CONFIG_WPS_ER
1094 struct wpa_supplicant *wpa_s = ctx;
1095
1096 if (wpa_s->wps_er == NULL)
1097 return;
1098 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1099 "dev_password_id=%u sel_reg_config_methods=0x%x",
1100 sel_reg, dev_passwd_id, sel_reg_config_methods);
1101 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1102 sel_reg_config_methods);
1103 #endif /* CONFIG_WPS_ER */
1104 }
1105
1106
1107 static u16 wps_fix_config_methods(u16 config_methods)
1108 {
1109 #ifdef CONFIG_WPS2
1110 if ((config_methods &
1111 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1112 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1113 wpa_printf(MSG_INFO, "WPS: Converting display to "
1114 "virtual_display for WPS 2.0 compliance");
1115 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1116 }
1117 if ((config_methods &
1118 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1119 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1120 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1121 "virtual_push_button for WPS 2.0 compliance");
1122 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1123 }
1124 #endif /* CONFIG_WPS2 */
1125
1126 return config_methods;
1127 }
1128
1129
1130 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1131 struct wps_context *wps)
1132 {
1133 wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1134 if (is_nil_uuid(wpa_s->conf->uuid)) {
1135 struct wpa_supplicant *first;
1136 first = wpa_s->global->ifaces;
1137 while (first && first->next)
1138 first = first->next;
1139 if (first && first != wpa_s) {
1140 if (wps != wpa_s->global->ifaces->wps)
1141 os_memcpy(wps->uuid,
1142 wpa_s->global->ifaces->wps->uuid,
1143 WPS_UUID_LEN);
1144 wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1145 "interface", wps->uuid, WPS_UUID_LEN);
1146 } else {
1147 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1148 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1149 "address", wps->uuid, WPS_UUID_LEN);
1150 }
1151 } else {
1152 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1153 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1154 wps->uuid, WPS_UUID_LEN);
1155 }
1156 }
1157
1158
1159 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1160 struct wps_context *wps)
1161 {
1162 wpabuf_free(wps->dev.vendor_ext_m1);
1163 wps->dev.vendor_ext_m1 = NULL;
1164
1165 if (wpa_s->conf->wps_vendor_ext_m1) {
1166 wps->dev.vendor_ext_m1 =
1167 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1168 if (!wps->dev.vendor_ext_m1) {
1169 wpa_printf(MSG_ERROR, "WPS: Cannot "
1170 "allocate memory for vendor_ext_m1");
1171 }
1172 }
1173 }
1174
1175
1176 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1177 {
1178 struct wps_context *wps;
1179 struct wps_registrar_config rcfg;
1180 struct hostapd_hw_modes *modes;
1181 u16 m;
1182
1183 wps = os_zalloc(sizeof(*wps));
1184 if (wps == NULL)
1185 return -1;
1186
1187 wps->cred_cb = wpa_supplicant_wps_cred;
1188 wps->event_cb = wpa_supplicant_wps_event;
1189 wps->cb_ctx = wpa_s;
1190
1191 wps->dev.device_name = wpa_s->conf->device_name;
1192 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1193 wps->dev.model_name = wpa_s->conf->model_name;
1194 wps->dev.model_number = wpa_s->conf->model_number;
1195 wps->dev.serial_number = wpa_s->conf->serial_number;
1196 wps->config_methods =
1197 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1198 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1199 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1200 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1201 "methods are not allowed at the same time");
1202 os_free(wps);
1203 return -1;
1204 }
1205 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1206 wps->dev.config_methods = wps->config_methods;
1207 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1208 WPS_DEV_TYPE_LEN);
1209
1210 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1211 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1212 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1213
1214 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1215
1216 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1217 modes = wpa_s->hw.modes;
1218 if (modes) {
1219 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1220 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1221 modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1222 wps->dev.rf_bands |= WPS_RF_24GHZ;
1223 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1224 wps->dev.rf_bands |= WPS_RF_50GHZ;
1225 }
1226 }
1227 if (wps->dev.rf_bands == 0) {
1228 /*
1229 * Default to claiming support for both bands if the driver
1230 * does not provide support for fetching supported bands.
1231 */
1232 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1233 }
1234 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1235 wpas_wps_set_uuid(wpa_s, wps);
1236
1237 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1238 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1239
1240 os_memset(&rcfg, 0, sizeof(rcfg));
1241 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1242 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1243 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1244 rcfg.cb_ctx = wpa_s;
1245
1246 wps->registrar = wps_registrar_init(wps, &rcfg);
1247 if (wps->registrar == NULL) {
1248 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1249 os_free(wps);
1250 return -1;
1251 }
1252
1253 wpa_s->wps = wps;
1254
1255 return 0;
1256 }
1257
1258
1259 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1260 {
1261 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1262 eloop_cancel_timeout(wpas_wps_reenable_networks_cb, wpa_s, NULL);
1263 wpas_wps_clear_ap_info(wpa_s);
1264
1265 if (wpa_s->wps == NULL)
1266 return;
1267
1268 #ifdef CONFIG_WPS_ER
1269 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1270 wpa_s->wps_er = NULL;
1271 #endif /* CONFIG_WPS_ER */
1272
1273 wps_registrar_deinit(wpa_s->wps->registrar);
1274 wpabuf_free(wpa_s->wps->dh_pubkey);
1275 wpabuf_free(wpa_s->wps->dh_privkey);
1276 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1277 os_free(wpa_s->wps->network_key);
1278 os_free(wpa_s->wps);
1279 wpa_s->wps = NULL;
1280 }
1281
1282
1283 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1284 struct wpa_ssid *ssid, struct wpa_bss *bss)
1285 {
1286 struct wpabuf *wps_ie;
1287
1288 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1289 return -1;
1290
1291 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1292 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1293 if (!wps_ie) {
1294 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1295 return 0;
1296 }
1297
1298 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1299 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1300 "without active PBC Registrar");
1301 wpabuf_free(wps_ie);
1302 return 0;
1303 }
1304
1305 /* TODO: overlap detection */
1306 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1307 "(Active PBC)");
1308 wpabuf_free(wps_ie);
1309 return 1;
1310 }
1311
1312 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1313 if (!wps_ie) {
1314 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1315 return 0;
1316 }
1317
1318 /*
1319 * Start with WPS APs that advertise our address as an
1320 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1321 * allow any WPS AP after couple of scans since some APs do not
1322 * set Selected Registrar attribute properly when using
1323 * external Registrar.
1324 */
1325 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1326 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1327 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1328 "without active PIN Registrar");
1329 wpabuf_free(wps_ie);
1330 return 0;
1331 }
1332 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1333 } else {
1334 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1335 "(Authorized MAC or Active PIN)");
1336 }
1337 wpabuf_free(wps_ie);
1338 return 1;
1339 }
1340
1341 if (wps_ie) {
1342 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1343 wpabuf_free(wps_ie);
1344 return 1;
1345 }
1346
1347 return -1;
1348 }
1349
1350
1351 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1352 struct wpa_ssid *ssid,
1353 struct wpa_bss *bss)
1354 {
1355 struct wpabuf *wps_ie = NULL;
1356 int ret = 0;
1357
1358 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1359 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1360 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1361 /* allow wildcard SSID for WPS PBC */
1362 ret = 1;
1363 }
1364 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1365 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1366 if (wps_ie &&
1367 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1368 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1369 /* allow wildcard SSID for WPS PIN */
1370 ret = 1;
1371 }
1372 }
1373
1374 if (!ret && ssid->bssid_set &&
1375 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1376 /* allow wildcard SSID due to hardcoded BSSID match */
1377 ret = 1;
1378 }
1379
1380 #ifdef CONFIG_WPS_STRICT
1381 if (wps_ie) {
1382 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1383 0, bss->bssid) < 0)
1384 ret = 0;
1385 if (bss->beacon_ie_len) {
1386 struct wpabuf *bcn_wps;
1387 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1388 bss, WPS_IE_VENDOR_TYPE);
1389 if (bcn_wps == NULL) {
1390 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1391 "missing from AP Beacon");
1392 ret = 0;
1393 } else {
1394 if (wps_validate_beacon(wps_ie) < 0)
1395 ret = 0;
1396 wpabuf_free(bcn_wps);
1397 }
1398 }
1399 }
1400 #endif /* CONFIG_WPS_STRICT */
1401
1402 wpabuf_free(wps_ie);
1403
1404 return ret;
1405 }
1406
1407
1408 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1409 struct wpa_bss *selected, struct wpa_ssid *ssid)
1410 {
1411 const u8 *sel_uuid, *uuid;
1412 struct wpabuf *wps_ie;
1413 int ret = 0;
1414 struct wpa_bss *bss;
1415
1416 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1417 return 0;
1418
1419 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1420 "present in scan results; selected BSSID " MACSTR,
1421 MAC2STR(selected->bssid));
1422
1423 /* Make sure that only one AP is in active PBC mode */
1424 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1425 if (wps_ie) {
1426 sel_uuid = wps_get_uuid_e(wps_ie);
1427 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1428 sel_uuid, UUID_LEN);
1429 } else {
1430 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1431 "WPS IE?!");
1432 sel_uuid = NULL;
1433 }
1434
1435 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1436 struct wpabuf *ie;
1437 if (bss == selected)
1438 continue;
1439 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1440 if (!ie)
1441 continue;
1442 if (!wps_is_selected_pbc_registrar(ie)) {
1443 wpabuf_free(ie);
1444 continue;
1445 }
1446 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1447 MACSTR, MAC2STR(bss->bssid));
1448 uuid = wps_get_uuid_e(ie);
1449 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1450 uuid, UUID_LEN);
1451 if (sel_uuid == NULL || uuid == NULL ||
1452 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1453 ret = 1; /* PBC overlap */
1454 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1455 MACSTR " and " MACSTR,
1456 MAC2STR(selected->bssid),
1457 MAC2STR(bss->bssid));
1458 wpabuf_free(ie);
1459 break;
1460 }
1461
1462 /* TODO: verify that this is reasonable dual-band situation */
1463
1464 wpabuf_free(ie);
1465 }
1466
1467 wpabuf_free(wps_ie);
1468
1469 return ret;
1470 }
1471
1472
1473 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1474 {
1475 struct wpa_bss *bss;
1476 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1477
1478 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1479 return;
1480
1481 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1482 struct wpabuf *ie;
1483 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1484 if (!ie)
1485 continue;
1486 if (wps_is_selected_pbc_registrar(ie))
1487 pbc++;
1488 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1489 auth++;
1490 else if (wps_is_selected_pin_registrar(ie))
1491 pin++;
1492 else
1493 wps++;
1494 wpabuf_free(ie);
1495 }
1496
1497 if (pbc)
1498 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1499 else if (auth)
1500 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1501 else if (pin)
1502 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1503 else if (wps)
1504 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1505 }
1506
1507
1508 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1509 {
1510 struct wpa_ssid *ssid;
1511
1512 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1513 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1514 return 1;
1515 }
1516
1517 return 0;
1518 }
1519
1520
1521 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1522 char *end)
1523 {
1524 struct wpabuf *wps_ie;
1525 int ret;
1526
1527 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1528 if (wps_ie == NULL)
1529 return 0;
1530
1531 ret = wps_attr_text(wps_ie, buf, end);
1532 wpabuf_free(wps_ie);
1533 return ret;
1534 }
1535
1536
1537 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1538 {
1539 #ifdef CONFIG_WPS_ER
1540 if (wpa_s->wps_er) {
1541 wps_er_refresh(wpa_s->wps_er);
1542 return 0;
1543 }
1544 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1545 if (wpa_s->wps_er == NULL)
1546 return -1;
1547 return 0;
1548 #else /* CONFIG_WPS_ER */
1549 return 0;
1550 #endif /* CONFIG_WPS_ER */
1551 }
1552
1553
1554 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1555 {
1556 #ifdef CONFIG_WPS_ER
1557 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1558 wpa_s->wps_er = NULL;
1559 #endif /* CONFIG_WPS_ER */
1560 return 0;
1561 }
1562
1563
1564 #ifdef CONFIG_WPS_ER
1565 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1566 const char *uuid, const char *pin)
1567 {
1568 u8 u[UUID_LEN];
1569 int any = 0;
1570
1571 if (os_strcmp(uuid, "any") == 0)
1572 any = 1;
1573 else if (uuid_str2bin(uuid, u))
1574 return -1;
1575 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1576 any ? NULL : u,
1577 (const u8 *) pin, os_strlen(pin), 300);
1578 }
1579
1580
1581 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1582 {
1583 u8 u[UUID_LEN];
1584
1585 if (uuid_str2bin(uuid, u))
1586 return -1;
1587 return wps_er_pbc(wpa_s->wps_er, u);
1588 }
1589
1590
1591 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1592 const char *pin)
1593 {
1594 u8 u[UUID_LEN];
1595
1596 if (uuid_str2bin(uuid, u))
1597 return -1;
1598 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1599 os_strlen(pin));
1600 }
1601
1602
1603 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1604 int id)
1605 {
1606 u8 u[UUID_LEN];
1607 struct wpa_ssid *ssid;
1608 struct wps_credential cred;
1609
1610 if (uuid_str2bin(uuid, u))
1611 return -1;
1612 ssid = wpa_config_get_network(wpa_s->conf, id);
1613 if (ssid == NULL || ssid->ssid == NULL)
1614 return -1;
1615
1616 os_memset(&cred, 0, sizeof(cred));
1617 if (ssid->ssid_len > 32)
1618 return -1;
1619 os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1620 cred.ssid_len = ssid->ssid_len;
1621 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1622 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1623 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1624 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1625 cred.encr_type = WPS_ENCR_AES;
1626 else
1627 cred.encr_type = WPS_ENCR_TKIP;
1628 if (ssid->passphrase) {
1629 cred.key_len = os_strlen(ssid->passphrase);
1630 if (cred.key_len >= 64)
1631 return -1;
1632 os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1633 } else if (ssid->psk_set) {
1634 cred.key_len = 32;
1635 os_memcpy(cred.key, ssid->psk, 32);
1636 } else
1637 return -1;
1638 } else {
1639 cred.auth_type = WPS_AUTH_OPEN;
1640 cred.encr_type = WPS_ENCR_NONE;
1641 }
1642 return wps_er_set_config(wpa_s->wps_er, u, &cred);
1643 }
1644
1645
1646 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1647 const char *pin, struct wps_new_ap_settings *settings)
1648 {
1649 u8 u[UUID_LEN];
1650 struct wps_credential cred;
1651 size_t len;
1652
1653 if (uuid_str2bin(uuid, u))
1654 return -1;
1655 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1656 settings->encr == NULL || settings->key_hex == NULL)
1657 return -1;
1658
1659 os_memset(&cred, 0, sizeof(cred));
1660 len = os_strlen(settings->ssid_hex);
1661 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1662 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1663 return -1;
1664 cred.ssid_len = len / 2;
1665
1666 len = os_strlen(settings->key_hex);
1667 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1668 hexstr2bin(settings->key_hex, cred.key, len / 2))
1669 return -1;
1670 cred.key_len = len / 2;
1671
1672 if (os_strcmp(settings->auth, "OPEN") == 0)
1673 cred.auth_type = WPS_AUTH_OPEN;
1674 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1675 cred.auth_type = WPS_AUTH_WPAPSK;
1676 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1677 cred.auth_type = WPS_AUTH_WPA2PSK;
1678 else
1679 return -1;
1680
1681 if (os_strcmp(settings->encr, "NONE") == 0)
1682 cred.encr_type = WPS_ENCR_NONE;
1683 else if (os_strcmp(settings->encr, "WEP") == 0)
1684 cred.encr_type = WPS_ENCR_WEP;
1685 else if (os_strcmp(settings->encr, "TKIP") == 0)
1686 cred.encr_type = WPS_ENCR_TKIP;
1687 else if (os_strcmp(settings->encr, "CCMP") == 0)
1688 cred.encr_type = WPS_ENCR_AES;
1689 else
1690 return -1;
1691
1692 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1693 os_strlen(pin), &cred);
1694 }
1695
1696
1697 #ifdef CONFIG_WPS_NFC
1698 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1699 int ndef, const char *uuid)
1700 {
1701 struct wpabuf *ret;
1702 u8 u[UUID_LEN];
1703
1704 if (!wpa_s->wps_er)
1705 return NULL;
1706
1707 if (uuid_str2bin(uuid, u))
1708 return NULL;
1709
1710 ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1711 if (ndef && ret) {
1712 struct wpabuf *tmp;
1713 tmp = ndef_build_wifi(ret);
1714 wpabuf_free(ret);
1715 if (tmp == NULL)
1716 return NULL;
1717 ret = tmp;
1718 }
1719
1720 return ret;
1721 }
1722 #endif /* CONFIG_WPS_NFC */
1723
1724
1725 static int callbacks_pending = 0;
1726
1727 static void wpas_wps_terminate_cb(void *ctx)
1728 {
1729 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1730 if (--callbacks_pending <= 0)
1731 eloop_terminate();
1732 }
1733 #endif /* CONFIG_WPS_ER */
1734
1735
1736 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1737 {
1738 #ifdef CONFIG_WPS_ER
1739 if (wpa_s->wps_er) {
1740 callbacks_pending++;
1741 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1742 wpa_s->wps_er = NULL;
1743 return 1;
1744 }
1745 #endif /* CONFIG_WPS_ER */
1746 return 0;
1747 }
1748
1749
1750 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1751 {
1752 struct wpa_ssid *ssid;
1753
1754 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1755 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1756 return 1;
1757 }
1758
1759 return 0;
1760 }
1761
1762
1763 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1764 {
1765 struct wps_context *wps = wpa_s->wps;
1766
1767 if (wps == NULL)
1768 return;
1769
1770 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1771 wps->config_methods = wps_config_methods_str2bin(
1772 wpa_s->conf->config_methods);
1773 if ((wps->config_methods &
1774 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1775 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1776 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1777 "config methods are not allowed at the "
1778 "same time");
1779 wps->config_methods &= ~WPS_CONFIG_LABEL;
1780 }
1781 }
1782 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1783 wps->dev.config_methods = wps->config_methods;
1784
1785 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1786 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1787 WPS_DEV_TYPE_LEN);
1788
1789 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1790 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1791 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1792 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1793 }
1794
1795 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1796 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1797
1798 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1799 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1800
1801 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1802 wpas_wps_set_uuid(wpa_s, wps);
1803
1804 if (wpa_s->conf->changed_parameters &
1805 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1806 /* Update pointers to make sure they refer current values */
1807 wps->dev.device_name = wpa_s->conf->device_name;
1808 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1809 wps->dev.model_name = wpa_s->conf->model_name;
1810 wps->dev.model_number = wpa_s->conf->model_number;
1811 wps->dev.serial_number = wpa_s->conf->serial_number;
1812 }
1813 }
1814
1815
1816 #ifdef CONFIG_WPS_NFC
1817
1818 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1819 {
1820 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1821 &wpa_s->conf->wps_nfc_dh_pubkey,
1822 &wpa_s->conf->wps_nfc_dh_privkey,
1823 &wpa_s->conf->wps_nfc_dev_pw);
1824 }
1825
1826
1827 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1828 {
1829 struct wps_context *wps = wpa_s->wps;
1830 char pw[32 * 2 + 1];
1831
1832 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1833 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1834 wpa_s->conf->wps_nfc_dev_pw == NULL)
1835 return -1;
1836
1837 dh5_free(wps->dh_ctx);
1838 wpabuf_free(wps->dh_pubkey);
1839 wpabuf_free(wps->dh_privkey);
1840 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1841 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1842 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1843 wps->dh_ctx = NULL;
1844 wpabuf_free(wps->dh_pubkey);
1845 wps->dh_pubkey = NULL;
1846 wpabuf_free(wps->dh_privkey);
1847 wps->dh_privkey = NULL;
1848 return -1;
1849 }
1850 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1851 if (wps->dh_ctx == NULL)
1852 return -1;
1853
1854 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1855 wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1856 wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1857 return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1858 wpa_s->conf->wps_nfc_dev_pw_id);
1859 }
1860
1861
1862 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1863 struct wps_parse_attr *attr)
1864 {
1865 wpa_s->wps_ap_channel = 0;
1866
1867 if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1868 return -1;
1869
1870 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1871 return 0;
1872
1873 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1874 "based on the received credential added");
1875 wpa_s->normal_scans = 0;
1876 wpa_supplicant_reinit_autoscan(wpa_s);
1877 if (wpa_s->wps_ap_channel) {
1878 u16 chan = wpa_s->wps_ap_channel;
1879 int freq = 0;
1880
1881 if (chan >= 1 && chan <= 13)
1882 freq = 2407 + 5 * chan;
1883 else if (chan == 14)
1884 freq = 2484;
1885 else if (chan >= 30)
1886 freq = 5000 + 5 * chan;
1887
1888 if (freq) {
1889 wpa_printf(MSG_DEBUG, "WPS: Credential indicated "
1890 "AP channel %u -> %u MHz", chan, freq);
1891 wpa_s->after_wps = 5;
1892 wpa_s->wps_freq = freq;
1893 }
1894 }
1895 wpa_s->disconnected = 0;
1896 wpa_s->reassociate = 1;
1897 wpa_supplicant_req_scan(wpa_s, 0, 0);
1898
1899 return 0;
1900 }
1901
1902
1903 #ifdef CONFIG_WPS_ER
1904 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1905 struct wps_parse_attr *attr)
1906 {
1907 return wps_registrar_add_nfc_password_token(
1908 wpa_s->wps->registrar, attr->oob_dev_password,
1909 attr->oob_dev_password_len);
1910 }
1911 #endif /* CONFIG_WPS_ER */
1912
1913
1914 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1915 const struct wpabuf *wps)
1916 {
1917 struct wps_parse_attr attr;
1918
1919 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1920
1921 if (wps_parse_msg(wps, &attr)) {
1922 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1923 return -1;
1924 }
1925
1926 if (attr.num_cred)
1927 return wpas_wps_use_cred(wpa_s, &attr);
1928
1929 #ifdef CONFIG_WPS_ER
1930 if (attr.oob_dev_password)
1931 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1932 #endif /* CONFIG_WPS_ER */
1933
1934 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1935 return -1;
1936 }
1937
1938
1939 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1940 const struct wpabuf *data)
1941 {
1942 const struct wpabuf *wps = data;
1943 struct wpabuf *tmp = NULL;
1944 int ret;
1945
1946 if (wpabuf_len(data) < 4)
1947 return -1;
1948
1949 if (*wpabuf_head_u8(data) != 0x10) {
1950 /* Assume this contains full NDEF record */
1951 tmp = ndef_parse_wifi(data);
1952 if (tmp == NULL) {
1953 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1954 return -1;
1955 }
1956 wps = tmp;
1957 }
1958
1959 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1960 wpabuf_free(tmp);
1961 return ret;
1962 }
1963
1964
1965 struct wpabuf * wpas_wps_nfc_handover_req(struct wpa_supplicant *wpa_s)
1966 {
1967 return ndef_build_wifi_hr();
1968 }
1969
1970
1971 struct wpabuf * wpas_wps_nfc_handover_sel(struct wpa_supplicant *wpa_s)
1972 {
1973 return NULL;
1974 }
1975
1976
1977 int wpas_wps_nfc_rx_handover_req(struct wpa_supplicant *wpa_s,
1978 const struct wpabuf *data)
1979 {
1980 /* TODO */
1981 return -1;
1982 }
1983
1984
1985 int wpas_wps_nfc_rx_handover_sel(struct wpa_supplicant *wpa_s,
1986 const struct wpabuf *data)
1987 {
1988 struct wpabuf *wps;
1989 int ret;
1990
1991 wps = ndef_parse_wifi(data);
1992 if (wps == NULL)
1993 return -1;
1994 wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
1995 "payload from NFC connection handover");
1996 wpa_hexdump_buf_key(MSG_DEBUG, "WPS: NFC payload", wps);
1997 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1998 wpabuf_free(wps);
1999
2000 return ret;
2001 }
2002
2003 #endif /* CONFIG_WPS_NFC */
2004
2005
2006 extern int wpa_debug_level;
2007
2008 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
2009 {
2010 size_t i;
2011 struct os_time now;
2012
2013 if (wpa_debug_level > MSG_DEBUG)
2014 return;
2015
2016 if (wpa_s->wps_ap == NULL)
2017 return;
2018
2019 os_get_time(&now);
2020
2021 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2022 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2023 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
2024
2025 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
2026 "tries=%d last_attempt=%d sec ago blacklist=%d",
2027 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
2028 ap->last_attempt.sec > 0 ?
2029 (int) now.sec - (int) ap->last_attempt.sec : -1,
2030 e ? e->count : 0);
2031 }
2032 }
2033
2034
2035 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
2036 const u8 *bssid)
2037 {
2038 size_t i;
2039
2040 if (wpa_s->wps_ap == NULL)
2041 return NULL;
2042
2043 for (i = 0; i < wpa_s->num_wps_ap; i++) {
2044 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
2045 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
2046 return ap;
2047 }
2048
2049 return NULL;
2050 }
2051
2052
2053 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
2054 struct wpa_scan_res *res)
2055 {
2056 struct wpabuf *wps;
2057 enum wps_ap_info_type type;
2058 struct wps_ap_info *ap;
2059 int r;
2060
2061 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
2062 return;
2063
2064 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
2065 if (wps == NULL)
2066 return;
2067
2068 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
2069 if (r == 2)
2070 type = WPS_AP_SEL_REG_OUR;
2071 else if (r == 1)
2072 type = WPS_AP_SEL_REG;
2073 else
2074 type = WPS_AP_NOT_SEL_REG;
2075
2076 wpabuf_free(wps);
2077
2078 ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2079 if (ap) {
2080 if (ap->type != type) {
2081 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2082 " changed type %d -> %d",
2083 MAC2STR(res->bssid), ap->type, type);
2084 ap->type = type;
2085 if (type != WPS_AP_NOT_SEL_REG)
2086 wpa_blacklist_del(wpa_s, ap->bssid);
2087 }
2088 return;
2089 }
2090
2091 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2092 sizeof(struct wps_ap_info));
2093 if (ap == NULL)
2094 return;
2095
2096 wpa_s->wps_ap = ap;
2097 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2098 wpa_s->num_wps_ap++;
2099
2100 os_memset(ap, 0, sizeof(*ap));
2101 os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2102 ap->type = type;
2103 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2104 MAC2STR(ap->bssid), ap->type);
2105 }
2106
2107
2108 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2109 struct wpa_scan_results *scan_res)
2110 {
2111 size_t i;
2112
2113 for (i = 0; i < scan_res->num; i++)
2114 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2115
2116 wpas_wps_dump_ap_info(wpa_s);
2117 }
2118
2119
2120 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2121 {
2122 struct wps_ap_info *ap;
2123 if (!wpa_s->wps_ap_iter)
2124 return;
2125 ap = wpas_wps_get_ap_info(wpa_s, bssid);
2126 if (ap == NULL)
2127 return;
2128 ap->tries++;
2129 os_get_time(&ap->last_attempt);
2130 }
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