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
wpas_wps_clear_ap_info(struct wpa_supplicant * wpa_s)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
wpas_wps_eapol_cb(struct wpa_supplicant * wpa_s)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
wpas_wps_security_workaround(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,const struct wps_credential * cred)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
wpa_supplicant_wps_cred(void * ctx,const struct wps_credential * cred)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 (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
260 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
261 "on the received credential");
262 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
263 if (ssid->eap.identity &&
264 ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN &&
265 os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR,
266 WSC_ID_REGISTRAR_LEN) == 0)
267 registrar = 1;
268 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
269 os_free(ssid->eap.identity);
270 ssid->eap.identity = NULL;
271 ssid->eap.identity_len = 0;
272 os_free(ssid->eap.phase1);
273 ssid->eap.phase1 = NULL;
274 os_free(ssid->eap.eap_methods);
275 ssid->eap.eap_methods = NULL;
276 if (!ssid->p2p_group) {
277 ssid->temporary = 0;
278 ssid->bssid_set = 0;
279 }
280 ssid->disabled_until.sec = 0;
281 ssid->disabled_until.usec = 0;
282 ssid->auth_failures = 0;
283 } else {
284 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
285 "received credential");
286 ssid = wpa_config_add_network(wpa_s->conf);
287 if (ssid == NULL)
288 return -1;
289 wpas_notify_network_added(wpa_s, ssid);
290 }
291
292 wpa_config_set_network_defaults(ssid);
293
294 os_free(ssid->ssid);
295 ssid->ssid = os_malloc(cred->ssid_len);
296 if (ssid->ssid) {
297 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
298 ssid->ssid_len = cred->ssid_len;
299 }
300
301 switch (cred->encr_type) {
302 case WPS_ENCR_NONE:
303 break;
304 case WPS_ENCR_WEP:
305 if (cred->key_len <= 0)
306 break;
307 if (cred->key_len != 5 && cred->key_len != 13 &&
308 cred->key_len != 10 && cred->key_len != 26) {
309 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
310 "%lu", (unsigned long) cred->key_len);
311 return -1;
312 }
313 if (cred->key_idx > NUM_WEP_KEYS) {
314 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
315 cred->key_idx);
316 return -1;
317 }
318 if (cred->key_idx)
319 key_idx = cred->key_idx - 1;
320 if (cred->key_len == 10 || cred->key_len == 26) {
321 if (hexstr2bin((char *) cred->key,
322 ssid->wep_key[key_idx],
323 cred->key_len / 2) < 0) {
324 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
325 "%d", key_idx);
326 return -1;
327 }
328 ssid->wep_key_len[key_idx] = cred->key_len / 2;
329 } else {
330 os_memcpy(ssid->wep_key[key_idx], cred->key,
331 cred->key_len);
332 ssid->wep_key_len[key_idx] = cred->key_len;
333 }
334 ssid->wep_tx_keyidx = key_idx;
335 break;
336 case WPS_ENCR_TKIP:
337 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
338 break;
339 case WPS_ENCR_AES:
340 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
341 break;
342 }
343
344 switch (auth_type) {
345 case WPS_AUTH_OPEN:
346 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
347 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
348 ssid->proto = 0;
349 #ifdef CONFIG_WPS_REG_DISABLE_OPEN
350 if (registrar) {
351 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK
352 "id=%d - Credentials for an open "
353 "network disabled by default - use "
354 "'select_network %d' to enable",
355 ssid->id, ssid->id);
356 ssid->disabled = 1;
357 }
358 #endif /* CONFIG_WPS_REG_DISABLE_OPEN */
359 break;
360 case WPS_AUTH_SHARED:
361 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
362 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
363 ssid->proto = 0;
364 break;
365 case WPS_AUTH_WPAPSK:
366 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
367 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
368 ssid->proto = WPA_PROTO_WPA;
369 break;
370 case WPS_AUTH_WPA2PSK:
371 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
372 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
373 ssid->proto = WPA_PROTO_RSN;
374 break;
375 }
376
377 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
378 if (cred->key_len == 2 * PMK_LEN) {
379 if (hexstr2bin((const char *) cred->key, ssid->psk,
380 PMK_LEN)) {
381 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
382 "Key");
383 return -1;
384 }
385 ssid->psk_set = 1;
386 ssid->export_keys = 1;
387 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
388 os_free(ssid->passphrase);
389 ssid->passphrase = os_malloc(cred->key_len + 1);
390 if (ssid->passphrase == NULL)
391 return -1;
392 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
393 ssid->passphrase[cred->key_len] = '\0';
394 wpa_config_update_psk(ssid);
395 ssid->export_keys = 1;
396 } else {
397 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
398 "length %lu",
399 (unsigned long) cred->key_len);
400 return -1;
401 }
402 }
403
404 wpas_wps_security_workaround(wpa_s, ssid, cred);
405
406 #ifndef CONFIG_NO_CONFIG_WRITE
407 if (wpa_s->conf->update_config &&
408 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
409 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
410 return -1;
411 }
412 #endif /* CONFIG_NO_CONFIG_WRITE */
413
414 return 0;
415 }
416
417
418 #ifdef CONFIG_P2P
wpas_wps_pbc_overlap_cb(void * eloop_ctx,void * timeout_ctx)419 static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
420 {
421 struct wpa_supplicant *wpa_s = eloop_ctx;
422 wpas_p2p_notif_pbc_overlap(wpa_s);
423 }
424 #endif /* CONFIG_P2P */
425
426
wpa_supplicant_wps_event_m2d(struct wpa_supplicant * wpa_s,struct wps_event_m2d * m2d)427 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
428 struct wps_event_m2d *m2d)
429 {
430 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
431 "dev_password_id=%d config_error=%d",
432 m2d->dev_password_id, m2d->config_error);
433 wpas_notify_wps_event_m2d(wpa_s, m2d);
434 #ifdef CONFIG_P2P
435 if (wpa_s->parent && wpa_s->parent != wpa_s) {
436 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D
437 "dev_password_id=%d config_error=%d",
438 m2d->dev_password_id, m2d->config_error);
439 }
440 if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) {
441 /*
442 * Notify P2P from eloop timeout to avoid issues with the
443 * interface getting removed while processing a message.
444 */
445 eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s,
446 NULL);
447 }
448 #endif /* CONFIG_P2P */
449 }
450
451
452 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
453 "No Error", /* WPS_EI_NO_ERROR */
454 "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
455 "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
456 };
457
wpa_supplicant_wps_event_fail(struct wpa_supplicant * wpa_s,struct wps_event_fail * fail)458 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
459 struct wps_event_fail *fail)
460 {
461 if (fail->error_indication > 0 &&
462 fail->error_indication < NUM_WPS_EI_VALUES) {
463 wpa_msg(wpa_s, MSG_INFO,
464 WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
465 fail->msg, fail->config_error, fail->error_indication,
466 wps_event_fail_reason[fail->error_indication]);
467 if (wpa_s->parent && wpa_s->parent != wpa_s)
468 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
469 "msg=%d config_error=%d reason=%d (%s)",
470 fail->msg, fail->config_error,
471 fail->error_indication,
472 wps_event_fail_reason[fail->error_indication]);
473 } else {
474 wpa_msg(wpa_s, MSG_INFO,
475 WPS_EVENT_FAIL "msg=%d config_error=%d",
476 fail->msg, fail->config_error);
477 if (wpa_s->parent && wpa_s->parent != wpa_s)
478 wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL
479 "msg=%d config_error=%d",
480 fail->msg, fail->config_error);
481 }
482 wpas_clear_wps(wpa_s);
483 wpas_notify_wps_event_fail(wpa_s, fail);
484 #ifdef CONFIG_P2P
485 wpas_p2p_wps_failed(wpa_s, fail);
486 #endif /* CONFIG_P2P */
487 }
488
489
wpa_supplicant_wps_event_success(struct wpa_supplicant * wpa_s)490 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
491 {
492 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
493 wpa_s->wps_success = 1;
494 wpas_notify_wps_event_success(wpa_s);
495 #ifdef CONFIG_P2P
496 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
497 #endif /* CONFIG_P2P */
498 }
499
500
wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant * wpa_s,struct wps_event_er_ap * ap)501 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
502 struct wps_event_er_ap *ap)
503 {
504 char uuid_str[100];
505 char dev_type[WPS_DEV_TYPE_BUFSIZE];
506
507 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
508 if (ap->pri_dev_type)
509 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
510 sizeof(dev_type));
511 else
512 dev_type[0] = '\0';
513
514 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
515 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
516 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
517 ap->friendly_name ? ap->friendly_name : "",
518 ap->manufacturer ? ap->manufacturer : "",
519 ap->model_description ? ap->model_description : "",
520 ap->model_name ? ap->model_name : "",
521 ap->manufacturer_url ? ap->manufacturer_url : "",
522 ap->model_url ? ap->model_url : "");
523 }
524
525
wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant * wpa_s,struct wps_event_er_ap * ap)526 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
527 struct wps_event_er_ap *ap)
528 {
529 char uuid_str[100];
530 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
531 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
532 }
533
534
wpa_supplicant_wps_event_er_enrollee_add(struct wpa_supplicant * wpa_s,struct wps_event_er_enrollee * enrollee)535 static void wpa_supplicant_wps_event_er_enrollee_add(
536 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
537 {
538 char uuid_str[100];
539 char dev_type[WPS_DEV_TYPE_BUFSIZE];
540
541 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
542 if (enrollee->pri_dev_type)
543 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
544 sizeof(dev_type));
545 else
546 dev_type[0] = '\0';
547
548 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
549 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
550 "|%s|%s|%s|%s|%s|",
551 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
552 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
553 enrollee->dev_name ? enrollee->dev_name : "",
554 enrollee->manufacturer ? enrollee->manufacturer : "",
555 enrollee->model_name ? enrollee->model_name : "",
556 enrollee->model_number ? enrollee->model_number : "",
557 enrollee->serial_number ? enrollee->serial_number : "");
558 }
559
560
wpa_supplicant_wps_event_er_enrollee_remove(struct wpa_supplicant * wpa_s,struct wps_event_er_enrollee * enrollee)561 static void wpa_supplicant_wps_event_er_enrollee_remove(
562 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
563 {
564 char uuid_str[100];
565 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
566 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
567 uuid_str, MAC2STR(enrollee->mac_addr));
568 }
569
570
wpa_supplicant_wps_event_er_ap_settings(struct wpa_supplicant * wpa_s,struct wps_event_er_ap_settings * ap_settings)571 static void wpa_supplicant_wps_event_er_ap_settings(
572 struct wpa_supplicant *wpa_s,
573 struct wps_event_er_ap_settings *ap_settings)
574 {
575 char uuid_str[100];
576 char key_str[65];
577 const struct wps_credential *cred = ap_settings->cred;
578
579 key_str[0] = '\0';
580 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
581 if (cred->key_len >= 8 && cred->key_len <= 64) {
582 os_memcpy(key_str, cred->key, cred->key_len);
583 key_str[cred->key_len] = '\0';
584 }
585 }
586
587 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
588 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
589 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
590 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
591 "key=%s",
592 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
593 cred->auth_type, cred->encr_type, key_str);
594 }
595
596
wpa_supplicant_wps_event_er_set_sel_reg(struct wpa_supplicant * wpa_s,struct wps_event_er_set_selected_registrar * ev)597 static void wpa_supplicant_wps_event_er_set_sel_reg(
598 struct wpa_supplicant *wpa_s,
599 struct wps_event_er_set_selected_registrar *ev)
600 {
601 char uuid_str[100];
602
603 uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str));
604 switch (ev->state) {
605 case WPS_ER_SET_SEL_REG_START:
606 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
607 "uuid=%s state=START sel_reg=%d dev_passwd_id=%u "
608 "sel_reg_config_methods=0x%x",
609 uuid_str, ev->sel_reg, ev->dev_passwd_id,
610 ev->sel_reg_config_methods);
611 break;
612 case WPS_ER_SET_SEL_REG_DONE:
613 wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG
614 "uuid=%s state=DONE", uuid_str);
615 break;
616 case WPS_ER_SET_SEL_REG_FAILED:
617 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG
618 "uuid=%s state=FAILED", uuid_str);
619 break;
620 }
621 }
622
623
wpa_supplicant_wps_event(void * ctx,enum wps_event event,union wps_event_data * data)624 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
625 union wps_event_data *data)
626 {
627 struct wpa_supplicant *wpa_s = ctx;
628 switch (event) {
629 case WPS_EV_M2D:
630 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
631 break;
632 case WPS_EV_FAIL:
633 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
634 break;
635 case WPS_EV_SUCCESS:
636 wpa_supplicant_wps_event_success(wpa_s);
637 break;
638 case WPS_EV_PWD_AUTH_FAIL:
639 #ifdef CONFIG_AP
640 if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee)
641 wpa_supplicant_ap_pwd_auth_fail(wpa_s);
642 #endif /* CONFIG_AP */
643 break;
644 case WPS_EV_PBC_OVERLAP:
645 break;
646 case WPS_EV_PBC_TIMEOUT:
647 break;
648 case WPS_EV_ER_AP_ADD:
649 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
650 break;
651 case WPS_EV_ER_AP_REMOVE:
652 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
653 break;
654 case WPS_EV_ER_ENROLLEE_ADD:
655 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
656 &data->enrollee);
657 break;
658 case WPS_EV_ER_ENROLLEE_REMOVE:
659 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
660 &data->enrollee);
661 break;
662 case WPS_EV_ER_AP_SETTINGS:
663 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
664 &data->ap_settings);
665 break;
666 case WPS_EV_ER_SET_SELECTED_REGISTRAR:
667 wpa_supplicant_wps_event_er_set_sel_reg(wpa_s,
668 &data->set_sel_reg);
669 break;
670 case WPS_EV_AP_PIN_SUCCESS:
671 break;
672 }
673 }
674
675
wpas_wps_get_req_type(struct wpa_ssid * ssid)676 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
677 {
678 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
679 eap_is_wps_pin_enrollee(&ssid->eap))
680 return WPS_REQ_ENROLLEE;
681 else
682 return WPS_REQ_REGISTRAR;
683 }
684
685
wpas_clear_wps(struct wpa_supplicant * wpa_s)686 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
687 {
688 int id;
689 struct wpa_ssid *ssid, *remove_ssid = NULL, *prev_current;
690
691 prev_current = wpa_s->current_ssid;
692
693 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
694
695 /* Remove any existing WPS network from configuration */
696 ssid = wpa_s->conf->ssid;
697 while (ssid) {
698 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
699 if (ssid == wpa_s->current_ssid) {
700 wpa_s->current_ssid = NULL;
701 if (ssid != NULL)
702 wpas_notify_network_changed(wpa_s);
703 }
704 id = ssid->id;
705 remove_ssid = ssid;
706 } else
707 id = -1;
708 ssid = ssid->next;
709 if (id >= 0) {
710 if (prev_current == remove_ssid) {
711 wpa_sm_set_config(wpa_s->wpa, NULL);
712 eapol_sm_notify_config(wpa_s->eapol, NULL,
713 NULL);
714 }
715 wpas_notify_network_removed(wpa_s, remove_ssid);
716 wpa_config_remove_network(wpa_s->conf, id);
717 }
718 }
719
720 wpas_wps_clear_ap_info(wpa_s);
721 }
722
723
wpas_wps_timeout(void * eloop_ctx,void * timeout_ctx)724 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
725 {
726 struct wpa_supplicant *wpa_s = eloop_ctx;
727 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
728 "out");
729 wpas_clear_wps(wpa_s);
730 }
731
732
wpas_wps_add_network(struct wpa_supplicant * wpa_s,int registrar,const u8 * bssid)733 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
734 int registrar, const u8 *bssid)
735 {
736 struct wpa_ssid *ssid;
737
738 ssid = wpa_config_add_network(wpa_s->conf);
739 if (ssid == NULL)
740 return NULL;
741 wpas_notify_network_added(wpa_s, ssid);
742 wpa_config_set_network_defaults(ssid);
743 ssid->temporary = 1;
744 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
745 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
746 wpa_config_set(ssid, "identity", registrar ?
747 "\"" WSC_ID_REGISTRAR "\"" :
748 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
749 wpas_notify_network_removed(wpa_s, ssid);
750 wpa_config_remove_network(wpa_s->conf, ssid->id);
751 return NULL;
752 }
753
754 if (bssid) {
755 #ifndef CONFIG_P2P
756 struct wpa_bss *bss;
757 int count = 0;
758 #endif /* CONFIG_P2P */
759
760 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
761 ssid->bssid_set = 1;
762
763 /*
764 * Note: With P2P, the SSID may change at the time the WPS
765 * provisioning is started, so better not filter the AP based
766 * on the current SSID in the scan results.
767 */
768 #ifndef CONFIG_P2P
769 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
770 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
771 continue;
772
773 os_free(ssid->ssid);
774 ssid->ssid = os_malloc(bss->ssid_len);
775 if (ssid->ssid == NULL)
776 break;
777 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
778 ssid->ssid_len = bss->ssid_len;
779 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
780 "scan results",
781 ssid->ssid, ssid->ssid_len);
782 count++;
783 }
784
785 if (count > 1) {
786 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
787 "for the AP; use wildcard");
788 os_free(ssid->ssid);
789 ssid->ssid = NULL;
790 ssid->ssid_len = 0;
791 }
792 #endif /* CONFIG_P2P */
793 }
794
795 return ssid;
796 }
797
798
wpas_wps_reassoc(struct wpa_supplicant * wpa_s,struct wpa_ssid * selected,const u8 * bssid)799 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
800 struct wpa_ssid *selected, const u8 *bssid)
801 {
802 struct wpa_ssid *ssid;
803 struct wpa_bss *bss;
804
805 wpa_s->known_wps_freq = 0;
806 if (bssid) {
807 bss = wpa_bss_get_bssid(wpa_s, bssid);
808 if (bss && bss->freq > 0) {
809 wpa_s->known_wps_freq = 1;
810 wpa_s->wps_freq = bss->freq;
811 }
812 }
813
814 if (wpa_s->current_ssid)
815 wpa_supplicant_deauthenticate(
816 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
817
818 /* Mark all other networks disabled and trigger reassociation */
819 ssid = wpa_s->conf->ssid;
820 while (ssid) {
821 int was_disabled = ssid->disabled;
822 /*
823 * In case the network object corresponds to a persistent group
824 * then do not send out network disabled signal. In addition,
825 * do not change disabled status of persistent network objects
826 * from 2 to 1 should we connect to another network.
827 */
828 if (was_disabled != 2) {
829 ssid->disabled = ssid != selected;
830 if (was_disabled != ssid->disabled)
831 wpas_notify_network_enabled_changed(wpa_s,
832 ssid);
833 }
834 ssid = ssid->next;
835 }
836 wpa_s->disconnected = 0;
837 wpa_s->reassociate = 1;
838 wpa_s->scan_runs = 0;
839 wpa_s->normal_scans = 0;
840 wpa_s->wps_success = 0;
841 wpa_s->blacklist_cleared = 0;
842 wpa_supplicant_req_scan(wpa_s, 0, 0);
843 }
844
845
wpas_wps_start_pbc(struct wpa_supplicant * wpa_s,const u8 * bssid,int p2p_group)846 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
847 int p2p_group)
848 {
849 struct wpa_ssid *ssid;
850 wpas_clear_wps(wpa_s);
851 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
852 if (ssid == NULL)
853 return -1;
854 ssid->temporary = 1;
855 ssid->p2p_group = p2p_group;
856 #ifdef CONFIG_P2P
857 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
858 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
859 if (ssid->ssid) {
860 ssid->ssid_len = wpa_s->go_params->ssid_len;
861 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
862 ssid->ssid_len);
863 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
864 "SSID", ssid->ssid, ssid->ssid_len);
865 }
866 }
867 #endif /* CONFIG_P2P */
868 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
869 if (wpa_s->wps_fragment_size)
870 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
871 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
872 wpa_s, NULL);
873 wpas_wps_reassoc(wpa_s, ssid, bssid);
874 return 0;
875 }
876
877
wpas_wps_start_pin(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * pin,int p2p_group,u16 dev_pw_id)878 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
879 const char *pin, int p2p_group, u16 dev_pw_id)
880 {
881 struct wpa_ssid *ssid;
882 char val[128];
883 unsigned int rpin = 0;
884
885 wpas_clear_wps(wpa_s);
886 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
887 if (ssid == NULL)
888 return -1;
889 ssid->temporary = 1;
890 ssid->p2p_group = p2p_group;
891 #ifdef CONFIG_P2P
892 if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) {
893 ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1);
894 if (ssid->ssid) {
895 ssid->ssid_len = wpa_s->go_params->ssid_len;
896 os_memcpy(ssid->ssid, wpa_s->go_params->ssid,
897 ssid->ssid_len);
898 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP "
899 "SSID", ssid->ssid, ssid->ssid_len);
900 }
901 }
902 #endif /* CONFIG_P2P */
903 if (pin)
904 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
905 pin, dev_pw_id);
906 else {
907 rpin = wps_generate_pin();
908 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
909 rpin, dev_pw_id);
910 }
911 wpa_config_set(ssid, "phase1", val, 0);
912 if (wpa_s->wps_fragment_size)
913 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
914 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
915 wpa_s, NULL);
916 wpa_s->wps_ap_iter = 1;
917 wpas_wps_reassoc(wpa_s, ssid, bssid);
918 return rpin;
919 }
920
921
922 /* Cancel the wps pbc/pin requests */
wpas_wps_cancel(struct wpa_supplicant * wpa_s)923 int wpas_wps_cancel(struct wpa_supplicant *wpa_s)
924 {
925 #ifdef CONFIG_AP
926 if (wpa_s->ap_iface) {
927 wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode");
928 return wpa_supplicant_ap_wps_cancel(wpa_s);
929 }
930 #endif /* CONFIG_AP */
931
932 if (wpa_s->wpa_state == WPA_SCANNING ||
933 wpa_s->wpa_state == WPA_DISCONNECTED) {
934 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan");
935 wpa_supplicant_cancel_scan(wpa_s);
936 wpas_clear_wps(wpa_s);
937 } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
938 wpa_printf(MSG_DEBUG, "WPS: Cancel operation - "
939 "deauthenticate");
940 wpa_supplicant_deauthenticate(wpa_s,
941 WLAN_REASON_DEAUTH_LEAVING);
942 wpas_clear_wps(wpa_s);
943 } else
944 wpas_wps_clear_ap_info(wpa_s);
945
946 return 0;
947 }
948
949
950 #ifdef CONFIG_WPS_OOB
wpas_wps_start_oob(struct wpa_supplicant * wpa_s,char * device_type,char * path,char * method,char * name)951 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
952 char *path, char *method, char *name)
953 {
954 struct wps_context *wps = wpa_s->wps;
955 struct oob_device_data *oob_dev;
956
957 oob_dev = wps_get_oob_device(device_type);
958 if (oob_dev == NULL)
959 return -1;
960 oob_dev->device_path = path;
961 oob_dev->device_name = name;
962 wps->oob_conf.oob_method = wps_get_oob_method(method);
963
964 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
965 /*
966 * Use pre-configured DH keys in order to be able to write the
967 * key hash into the OOB file.
968 */
969 wpabuf_free(wps->dh_pubkey);
970 wpabuf_free(wps->dh_privkey);
971 wps->dh_privkey = NULL;
972 wps->dh_pubkey = NULL;
973 dh5_free(wps->dh_ctx);
974 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
975 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
976 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
977 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
978 "Diffie-Hellman handshake");
979 return -1;
980 }
981 }
982
983 if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
984 wpas_clear_wps(wpa_s);
985
986 if (wps_process_oob(wps, oob_dev, 0) < 0)
987 return -1;
988
989 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
990 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
991 wpas_wps_start_pin(wpa_s, NULL,
992 wpabuf_head(wps->oob_conf.dev_password), 0,
993 DEV_PW_DEFAULT) < 0)
994 return -1;
995
996 return 0;
997 }
998 #endif /* CONFIG_WPS_OOB */
999
1000
wpas_wps_start_reg(struct wpa_supplicant * wpa_s,const u8 * bssid,const char * pin,struct wps_new_ap_settings * settings)1001 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
1002 const char *pin, struct wps_new_ap_settings *settings)
1003 {
1004 struct wpa_ssid *ssid;
1005 char val[200];
1006 char *pos, *end;
1007 int res;
1008
1009 if (!pin)
1010 return -1;
1011 wpas_clear_wps(wpa_s);
1012 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
1013 if (ssid == NULL)
1014 return -1;
1015 ssid->temporary = 1;
1016 pos = val;
1017 end = pos + sizeof(val);
1018 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
1019 if (res < 0 || res >= end - pos)
1020 return -1;
1021 pos += res;
1022 if (settings) {
1023 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
1024 "new_encr=%s new_key=%s",
1025 settings->ssid_hex, settings->auth,
1026 settings->encr, settings->key_hex);
1027 if (res < 0 || res >= end - pos)
1028 return -1;
1029 pos += res;
1030 }
1031 res = os_snprintf(pos, end - pos, "\"");
1032 if (res < 0 || res >= end - pos)
1033 return -1;
1034 wpa_config_set(ssid, "phase1", val, 0);
1035 if (wpa_s->wps_fragment_size)
1036 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
1037 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
1038 wpa_s, NULL);
1039 wpas_wps_reassoc(wpa_s, ssid, bssid);
1040 return 0;
1041 }
1042
1043
wpas_wps_new_psk_cb(void * ctx,const u8 * mac_addr,const u8 * psk,size_t psk_len)1044 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
1045 size_t psk_len)
1046 {
1047 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
1048 "STA " MACSTR, MAC2STR(mac_addr));
1049 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
1050
1051 /* TODO */
1052
1053 return 0;
1054 }
1055
1056
wpas_wps_pin_needed_cb(void * ctx,const u8 * uuid_e,const struct wps_device_data * dev)1057 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
1058 const struct wps_device_data *dev)
1059 {
1060 char uuid[40], txt[400];
1061 int len;
1062 char devtype[WPS_DEV_TYPE_BUFSIZE];
1063 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
1064 return;
1065 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
1066 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
1067 " [%s|%s|%s|%s|%s|%s]",
1068 uuid, MAC2STR(dev->mac_addr), dev->device_name,
1069 dev->manufacturer, dev->model_name,
1070 dev->model_number, dev->serial_number,
1071 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
1072 sizeof(devtype)));
1073 if (len > 0 && len < (int) sizeof(txt))
1074 wpa_printf(MSG_INFO, "%s", txt);
1075 }
1076
1077
wpas_wps_set_sel_reg_cb(void * ctx,int sel_reg,u16 dev_passwd_id,u16 sel_reg_config_methods)1078 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
1079 u16 sel_reg_config_methods)
1080 {
1081 #ifdef CONFIG_WPS_ER
1082 struct wpa_supplicant *wpa_s = ctx;
1083
1084 if (wpa_s->wps_er == NULL)
1085 return;
1086 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
1087 "dev_password_id=%u sel_reg_config_methods=0x%x",
1088 sel_reg, dev_passwd_id, sel_reg_config_methods);
1089 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
1090 sel_reg_config_methods);
1091 #endif /* CONFIG_WPS_ER */
1092 }
1093
1094
wps_fix_config_methods(u16 config_methods)1095 static u16 wps_fix_config_methods(u16 config_methods)
1096 {
1097 #ifdef CONFIG_WPS2
1098 if ((config_methods &
1099 (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1100 WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1101 wpa_printf(MSG_INFO, "WPS: Converting display to "
1102 "virtual_display for WPS 2.0 compliance");
1103 config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1104 }
1105 if ((config_methods &
1106 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1107 WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1108 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1109 "virtual_push_button for WPS 2.0 compliance");
1110 config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1111 }
1112 #endif /* CONFIG_WPS2 */
1113
1114 return config_methods;
1115 }
1116
1117
wpas_wps_set_uuid(struct wpa_supplicant * wpa_s,struct wps_context * wps)1118 static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s,
1119 struct wps_context *wps)
1120 {
1121 wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname);
1122 if (is_nil_uuid(wpa_s->conf->uuid)) {
1123 struct wpa_supplicant *first;
1124 first = wpa_s->global->ifaces;
1125 while (first && first->next)
1126 first = first->next;
1127 if (first && first != wpa_s) {
1128 if (wps != wpa_s->global->ifaces->wps)
1129 os_memcpy(wps->uuid,
1130 wpa_s->global->ifaces->wps->uuid,
1131 WPS_UUID_LEN);
1132 wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first "
1133 "interface", wps->uuid, WPS_UUID_LEN);
1134 } else {
1135 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1136 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1137 "address", wps->uuid, WPS_UUID_LEN);
1138 }
1139 } else {
1140 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
1141 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration",
1142 wps->uuid, WPS_UUID_LEN);
1143 }
1144 }
1145
1146
wpas_wps_set_vendor_ext_m1(struct wpa_supplicant * wpa_s,struct wps_context * wps)1147 static void wpas_wps_set_vendor_ext_m1(struct wpa_supplicant *wpa_s,
1148 struct wps_context *wps)
1149 {
1150 wpabuf_free(wps->dev.vendor_ext_m1);
1151 wps->dev.vendor_ext_m1 = NULL;
1152
1153 if (wpa_s->conf->wps_vendor_ext_m1) {
1154 wps->dev.vendor_ext_m1 =
1155 wpabuf_dup(wpa_s->conf->wps_vendor_ext_m1);
1156 if (!wps->dev.vendor_ext_m1) {
1157 wpa_printf(MSG_ERROR, "WPS: Cannot "
1158 "allocate memory for vendor_ext_m1");
1159 }
1160 }
1161 }
1162
1163
wpas_wps_init(struct wpa_supplicant * wpa_s)1164 int wpas_wps_init(struct wpa_supplicant *wpa_s)
1165 {
1166 struct wps_context *wps;
1167 struct wps_registrar_config rcfg;
1168 struct hostapd_hw_modes *modes;
1169 u16 m;
1170
1171 wps = os_zalloc(sizeof(*wps));
1172 if (wps == NULL)
1173 return -1;
1174
1175 wps->cred_cb = wpa_supplicant_wps_cred;
1176 wps->event_cb = wpa_supplicant_wps_event;
1177 wps->cb_ctx = wpa_s;
1178
1179 wps->dev.device_name = wpa_s->conf->device_name;
1180 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1181 wps->dev.model_name = wpa_s->conf->model_name;
1182 wps->dev.model_number = wpa_s->conf->model_number;
1183 wps->dev.serial_number = wpa_s->conf->serial_number;
1184 wps->config_methods =
1185 wps_config_methods_str2bin(wpa_s->conf->config_methods);
1186 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1187 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1188 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
1189 "methods are not allowed at the same time");
1190 os_free(wps);
1191 return -1;
1192 }
1193 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1194 wps->dev.config_methods = wps->config_methods;
1195 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1196 WPS_DEV_TYPE_LEN);
1197
1198 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1199 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1200 WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types);
1201
1202 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1203
1204 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1205 modes = wpa_s->hw.modes;
1206 if (modes) {
1207 for (m = 0; m < wpa_s->hw.num_modes; m++) {
1208 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B ||
1209 modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1210 wps->dev.rf_bands |= WPS_RF_24GHZ;
1211 else if (modes[m].mode == HOSTAPD_MODE_IEEE80211A)
1212 wps->dev.rf_bands |= WPS_RF_50GHZ;
1213 }
1214 }
1215 if (wps->dev.rf_bands == 0) {
1216 /*
1217 * Default to claiming support for both bands if the driver
1218 * does not provide support for fetching supported bands.
1219 */
1220 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
1221 }
1222 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
1223 wpas_wps_set_uuid(wpa_s, wps);
1224
1225 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1226 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1227
1228 os_memset(&rcfg, 0, sizeof(rcfg));
1229 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
1230 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
1231 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
1232 rcfg.cb_ctx = wpa_s;
1233
1234 wps->registrar = wps_registrar_init(wps, &rcfg);
1235 if (wps->registrar == NULL) {
1236 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
1237 os_free(wps);
1238 return -1;
1239 }
1240
1241 wpa_s->wps = wps;
1242
1243 return 0;
1244 }
1245
1246
wpas_wps_deinit(struct wpa_supplicant * wpa_s)1247 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
1248 {
1249 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
1250 wpas_wps_clear_ap_info(wpa_s);
1251
1252 if (wpa_s->wps == NULL)
1253 return;
1254
1255 #ifdef CONFIG_WPS_ER
1256 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1257 wpa_s->wps_er = NULL;
1258 #endif /* CONFIG_WPS_ER */
1259
1260 wps_registrar_deinit(wpa_s->wps->registrar);
1261 wpabuf_free(wpa_s->wps->dh_pubkey);
1262 wpabuf_free(wpa_s->wps->dh_privkey);
1263 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
1264 wpabuf_free(wpa_s->wps->oob_conf.dev_password);
1265 wpabuf_free(wpa_s->wps->dev.vendor_ext_m1);
1266 os_free(wpa_s->wps->network_key);
1267 os_free(wpa_s->wps);
1268 wpa_s->wps = NULL;
1269 }
1270
1271
wpas_wps_ssid_bss_match(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)1272 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
1273 struct wpa_ssid *ssid, struct wpa_bss *bss)
1274 {
1275 struct wpabuf *wps_ie;
1276
1277 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
1278 return -1;
1279
1280 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1281 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1282 if (!wps_ie) {
1283 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1284 return 0;
1285 }
1286
1287 if (!wps_is_selected_pbc_registrar(wps_ie)) {
1288 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1289 "without active PBC Registrar");
1290 wpabuf_free(wps_ie);
1291 return 0;
1292 }
1293
1294 /* TODO: overlap detection */
1295 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1296 "(Active PBC)");
1297 wpabuf_free(wps_ie);
1298 return 1;
1299 }
1300
1301 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1302 if (!wps_ie) {
1303 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1304 return 0;
1305 }
1306
1307 /*
1308 * Start with WPS APs that advertise our address as an
1309 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1310 * allow any WPS AP after couple of scans since some APs do not
1311 * set Selected Registrar attribute properly when using
1312 * external Registrar.
1313 */
1314 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1315 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1316 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1317 "without active PIN Registrar");
1318 wpabuf_free(wps_ie);
1319 return 0;
1320 }
1321 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1322 } else {
1323 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1324 "(Authorized MAC or Active PIN)");
1325 }
1326 wpabuf_free(wps_ie);
1327 return 1;
1328 }
1329
1330 if (wps_ie) {
1331 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1332 wpabuf_free(wps_ie);
1333 return 1;
1334 }
1335
1336 return -1;
1337 }
1338
1339
wpas_wps_ssid_wildcard_ok(struct wpa_supplicant * wpa_s,struct wpa_ssid * ssid,struct wpa_bss * bss)1340 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1341 struct wpa_ssid *ssid,
1342 struct wpa_bss *bss)
1343 {
1344 struct wpabuf *wps_ie = NULL;
1345 int ret = 0;
1346
1347 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1348 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1349 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1350 /* allow wildcard SSID for WPS PBC */
1351 ret = 1;
1352 }
1353 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1354 wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1355 if (wps_ie &&
1356 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1357 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1358 /* allow wildcard SSID for WPS PIN */
1359 ret = 1;
1360 }
1361 }
1362
1363 if (!ret && ssid->bssid_set &&
1364 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1365 /* allow wildcard SSID due to hardcoded BSSID match */
1366 ret = 1;
1367 }
1368
1369 #ifdef CONFIG_WPS_STRICT
1370 if (wps_ie) {
1371 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1372 0, bss->bssid) < 0)
1373 ret = 0;
1374 if (bss->beacon_ie_len) {
1375 struct wpabuf *bcn_wps;
1376 bcn_wps = wpa_bss_get_vendor_ie_multi_beacon(
1377 bss, WPS_IE_VENDOR_TYPE);
1378 if (bcn_wps == NULL) {
1379 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1380 "missing from AP Beacon");
1381 ret = 0;
1382 } else {
1383 if (wps_validate_beacon(wps_ie) < 0)
1384 ret = 0;
1385 wpabuf_free(bcn_wps);
1386 }
1387 }
1388 }
1389 #endif /* CONFIG_WPS_STRICT */
1390
1391 wpabuf_free(wps_ie);
1392
1393 return ret;
1394 }
1395
1396
wpas_wps_scan_pbc_overlap(struct wpa_supplicant * wpa_s,struct wpa_bss * selected,struct wpa_ssid * ssid)1397 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1398 struct wpa_bss *selected, struct wpa_ssid *ssid)
1399 {
1400 const u8 *sel_uuid, *uuid;
1401 struct wpabuf *wps_ie;
1402 int ret = 0;
1403 struct wpa_bss *bss;
1404
1405 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1406 return 0;
1407
1408 wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is "
1409 "present in scan results; selected BSSID " MACSTR,
1410 MAC2STR(selected->bssid));
1411
1412 /* Make sure that only one AP is in active PBC mode */
1413 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1414 if (wps_ie) {
1415 sel_uuid = wps_get_uuid_e(wps_ie);
1416 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS",
1417 sel_uuid, UUID_LEN);
1418 } else {
1419 wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include "
1420 "WPS IE?!");
1421 sel_uuid = NULL;
1422 }
1423
1424 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1425 struct wpabuf *ie;
1426 if (bss == selected)
1427 continue;
1428 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1429 if (!ie)
1430 continue;
1431 if (!wps_is_selected_pbc_registrar(ie)) {
1432 wpabuf_free(ie);
1433 continue;
1434 }
1435 wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: "
1436 MACSTR, MAC2STR(bss->bssid));
1437 uuid = wps_get_uuid_e(ie);
1438 wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS",
1439 uuid, UUID_LEN);
1440 if (sel_uuid == NULL || uuid == NULL ||
1441 os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) {
1442 ret = 1; /* PBC overlap */
1443 wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: "
1444 MACSTR " and " MACSTR,
1445 MAC2STR(selected->bssid),
1446 MAC2STR(bss->bssid));
1447 wpabuf_free(ie);
1448 break;
1449 }
1450
1451 /* TODO: verify that this is reasonable dual-band situation */
1452
1453 wpabuf_free(ie);
1454 }
1455
1456 wpabuf_free(wps_ie);
1457
1458 return ret;
1459 }
1460
1461
wpas_wps_notify_scan_results(struct wpa_supplicant * wpa_s)1462 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1463 {
1464 struct wpa_bss *bss;
1465 unsigned int pbc = 0, auth = 0, pin = 0, wps = 0;
1466
1467 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1468 return;
1469
1470 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1471 struct wpabuf *ie;
1472 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1473 if (!ie)
1474 continue;
1475 if (wps_is_selected_pbc_registrar(ie))
1476 pbc++;
1477 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1478 auth++;
1479 else if (wps_is_selected_pin_registrar(ie))
1480 pin++;
1481 else
1482 wps++;
1483 wpabuf_free(ie);
1484 }
1485
1486 if (pbc)
1487 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
1488 else if (auth)
1489 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH);
1490 else if (pin)
1491 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
1492 else if (wps)
1493 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1494 }
1495
1496
wpas_wps_searching(struct wpa_supplicant * wpa_s)1497 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1498 {
1499 struct wpa_ssid *ssid;
1500
1501 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1502 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1503 return 1;
1504 }
1505
1506 return 0;
1507 }
1508
1509
wpas_wps_scan_result_text(const u8 * ies,size_t ies_len,char * buf,char * end)1510 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1511 char *end)
1512 {
1513 struct wpabuf *wps_ie;
1514 int ret;
1515
1516 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1517 if (wps_ie == NULL)
1518 return 0;
1519
1520 ret = wps_attr_text(wps_ie, buf, end);
1521 wpabuf_free(wps_ie);
1522 return ret;
1523 }
1524
1525
wpas_wps_er_start(struct wpa_supplicant * wpa_s,const char * filter)1526 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1527 {
1528 #ifdef CONFIG_WPS_ER
1529 if (wpa_s->wps_er) {
1530 wps_er_refresh(wpa_s->wps_er);
1531 return 0;
1532 }
1533 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1534 if (wpa_s->wps_er == NULL)
1535 return -1;
1536 return 0;
1537 #else /* CONFIG_WPS_ER */
1538 return 0;
1539 #endif /* CONFIG_WPS_ER */
1540 }
1541
1542
wpas_wps_er_stop(struct wpa_supplicant * wpa_s)1543 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1544 {
1545 #ifdef CONFIG_WPS_ER
1546 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1547 wpa_s->wps_er = NULL;
1548 #endif /* CONFIG_WPS_ER */
1549 return 0;
1550 }
1551
1552
1553 #ifdef CONFIG_WPS_ER
wpas_wps_er_add_pin(struct wpa_supplicant * wpa_s,const u8 * addr,const char * uuid,const char * pin)1554 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1555 const char *uuid, const char *pin)
1556 {
1557 u8 u[UUID_LEN];
1558 int any = 0;
1559
1560 if (os_strcmp(uuid, "any") == 0)
1561 any = 1;
1562 else if (uuid_str2bin(uuid, u))
1563 return -1;
1564 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1565 any ? NULL : u,
1566 (const u8 *) pin, os_strlen(pin), 300);
1567 }
1568
1569
wpas_wps_er_pbc(struct wpa_supplicant * wpa_s,const char * uuid)1570 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1571 {
1572 u8 u[UUID_LEN];
1573
1574 if (uuid_str2bin(uuid, u))
1575 return -1;
1576 return wps_er_pbc(wpa_s->wps_er, u);
1577 }
1578
1579
wpas_wps_er_learn(struct wpa_supplicant * wpa_s,const char * uuid,const char * pin)1580 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1581 const char *pin)
1582 {
1583 u8 u[UUID_LEN];
1584
1585 if (uuid_str2bin(uuid, u))
1586 return -1;
1587 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1588 os_strlen(pin));
1589 }
1590
1591
wpas_wps_er_set_config(struct wpa_supplicant * wpa_s,const char * uuid,int id)1592 int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid,
1593 int id)
1594 {
1595 u8 u[UUID_LEN];
1596 struct wpa_ssid *ssid;
1597 struct wps_credential cred;
1598
1599 if (uuid_str2bin(uuid, u))
1600 return -1;
1601 ssid = wpa_config_get_network(wpa_s->conf, id);
1602 if (ssid == NULL || ssid->ssid == NULL)
1603 return -1;
1604
1605 os_memset(&cred, 0, sizeof(cred));
1606 if (ssid->ssid_len > 32)
1607 return -1;
1608 os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len);
1609 cred.ssid_len = ssid->ssid_len;
1610 if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
1611 cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ?
1612 WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK;
1613 if (ssid->pairwise_cipher & WPA_CIPHER_CCMP)
1614 cred.encr_type = WPS_ENCR_AES;
1615 else
1616 cred.encr_type = WPS_ENCR_TKIP;
1617 if (ssid->passphrase) {
1618 cred.key_len = os_strlen(ssid->passphrase);
1619 if (cred.key_len >= 64)
1620 return -1;
1621 os_memcpy(cred.key, ssid->passphrase, cred.key_len);
1622 } else if (ssid->psk_set) {
1623 cred.key_len = 32;
1624 os_memcpy(cred.key, ssid->psk, 32);
1625 } else
1626 return -1;
1627 } else {
1628 cred.auth_type = WPS_AUTH_OPEN;
1629 cred.encr_type = WPS_ENCR_NONE;
1630 }
1631 return wps_er_set_config(wpa_s->wps_er, u, &cred);
1632 }
1633
1634
wpas_wps_er_config(struct wpa_supplicant * wpa_s,const char * uuid,const char * pin,struct wps_new_ap_settings * settings)1635 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1636 const char *pin, struct wps_new_ap_settings *settings)
1637 {
1638 u8 u[UUID_LEN];
1639 struct wps_credential cred;
1640 size_t len;
1641
1642 if (uuid_str2bin(uuid, u))
1643 return -1;
1644 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1645 settings->encr == NULL || settings->key_hex == NULL)
1646 return -1;
1647
1648 os_memset(&cred, 0, sizeof(cred));
1649 len = os_strlen(settings->ssid_hex);
1650 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1651 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1652 return -1;
1653 cred.ssid_len = len / 2;
1654
1655 len = os_strlen(settings->key_hex);
1656 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1657 hexstr2bin(settings->key_hex, cred.key, len / 2))
1658 return -1;
1659 cred.key_len = len / 2;
1660
1661 if (os_strcmp(settings->auth, "OPEN") == 0)
1662 cred.auth_type = WPS_AUTH_OPEN;
1663 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1664 cred.auth_type = WPS_AUTH_WPAPSK;
1665 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1666 cred.auth_type = WPS_AUTH_WPA2PSK;
1667 else
1668 return -1;
1669
1670 if (os_strcmp(settings->encr, "NONE") == 0)
1671 cred.encr_type = WPS_ENCR_NONE;
1672 else if (os_strcmp(settings->encr, "WEP") == 0)
1673 cred.encr_type = WPS_ENCR_WEP;
1674 else if (os_strcmp(settings->encr, "TKIP") == 0)
1675 cred.encr_type = WPS_ENCR_TKIP;
1676 else if (os_strcmp(settings->encr, "CCMP") == 0)
1677 cred.encr_type = WPS_ENCR_AES;
1678 else
1679 return -1;
1680
1681 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1682 os_strlen(pin), &cred);
1683 }
1684
1685
1686 #ifdef CONFIG_WPS_NFC
wpas_wps_er_nfc_config_token(struct wpa_supplicant * wpa_s,int ndef,const char * uuid)1687 struct wpabuf * wpas_wps_er_nfc_config_token(struct wpa_supplicant *wpa_s,
1688 int ndef, const char *uuid)
1689 {
1690 struct wpabuf *ret;
1691 u8 u[UUID_LEN];
1692
1693 if (!wpa_s->wps_er)
1694 return NULL;
1695
1696 if (uuid_str2bin(uuid, u))
1697 return NULL;
1698
1699 ret = wps_er_nfc_config_token(wpa_s->wps_er, u);
1700 if (ndef && ret) {
1701 struct wpabuf *tmp;
1702 tmp = ndef_build_wifi(ret);
1703 wpabuf_free(ret);
1704 if (tmp == NULL)
1705 return NULL;
1706 ret = tmp;
1707 }
1708
1709 return ret;
1710 }
1711 #endif /* CONFIG_WPS_NFC */
1712
1713
1714 static int callbacks_pending = 0;
1715
wpas_wps_terminate_cb(void * ctx)1716 static void wpas_wps_terminate_cb(void *ctx)
1717 {
1718 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1719 if (--callbacks_pending <= 0)
1720 eloop_terminate();
1721 }
1722 #endif /* CONFIG_WPS_ER */
1723
1724
wpas_wps_terminate_pending(struct wpa_supplicant * wpa_s)1725 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1726 {
1727 #ifdef CONFIG_WPS_ER
1728 if (wpa_s->wps_er) {
1729 callbacks_pending++;
1730 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1731 wpa_s->wps_er = NULL;
1732 return 1;
1733 }
1734 #endif /* CONFIG_WPS_ER */
1735 return 0;
1736 }
1737
1738
wpas_wps_in_progress(struct wpa_supplicant * wpa_s)1739 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1740 {
1741 struct wpa_ssid *ssid;
1742
1743 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1744 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1745 return 1;
1746 }
1747
1748 return 0;
1749 }
1750
1751
wpas_wps_update_config(struct wpa_supplicant * wpa_s)1752 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1753 {
1754 struct wps_context *wps = wpa_s->wps;
1755
1756 if (wps == NULL)
1757 return;
1758
1759 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1760 wps->config_methods = wps_config_methods_str2bin(
1761 wpa_s->conf->config_methods);
1762 if ((wps->config_methods &
1763 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1764 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1765 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1766 "config methods are not allowed at the "
1767 "same time");
1768 wps->config_methods &= ~WPS_CONFIG_LABEL;
1769 }
1770 }
1771 wps->config_methods = wps_fix_config_methods(wps->config_methods);
1772 wps->dev.config_methods = wps->config_methods;
1773
1774 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
1775 os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type,
1776 WPS_DEV_TYPE_LEN);
1777
1778 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
1779 wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
1780 os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type,
1781 wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN);
1782 }
1783
1784 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION)
1785 wpas_wps_set_vendor_ext_m1(wpa_s, wps);
1786
1787 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1788 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1789
1790 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)
1791 wpas_wps_set_uuid(wpa_s, wps);
1792
1793 if (wpa_s->conf->changed_parameters &
1794 (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) {
1795 /* Update pointers to make sure they refer current values */
1796 wps->dev.device_name = wpa_s->conf->device_name;
1797 wps->dev.manufacturer = wpa_s->conf->manufacturer;
1798 wps->dev.model_name = wpa_s->conf->model_name;
1799 wps->dev.model_number = wpa_s->conf->model_number;
1800 wps->dev.serial_number = wpa_s->conf->serial_number;
1801 }
1802 }
1803
1804
1805 #ifdef CONFIG_WPS_NFC
1806
wpas_wps_nfc_token(struct wpa_supplicant * wpa_s,int ndef)1807 struct wpabuf * wpas_wps_nfc_token(struct wpa_supplicant *wpa_s, int ndef)
1808 {
1809 return wps_nfc_token_gen(ndef, &wpa_s->conf->wps_nfc_dev_pw_id,
1810 &wpa_s->conf->wps_nfc_dh_pubkey,
1811 &wpa_s->conf->wps_nfc_dh_privkey,
1812 &wpa_s->conf->wps_nfc_dev_pw);
1813 }
1814
1815
wpas_wps_start_nfc(struct wpa_supplicant * wpa_s,const u8 * bssid)1816 int wpas_wps_start_nfc(struct wpa_supplicant *wpa_s, const u8 *bssid)
1817 {
1818 struct wps_context *wps = wpa_s->wps;
1819 char pw[32 * 2 + 1];
1820
1821 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
1822 wpa_s->conf->wps_nfc_dh_privkey == NULL ||
1823 wpa_s->conf->wps_nfc_dev_pw == NULL)
1824 return -1;
1825
1826 dh5_free(wps->dh_ctx);
1827 wpabuf_free(wps->dh_pubkey);
1828 wpabuf_free(wps->dh_privkey);
1829 wps->dh_privkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
1830 wps->dh_pubkey = wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
1831 if (wps->dh_privkey == NULL || wps->dh_pubkey == NULL) {
1832 wps->dh_ctx = NULL;
1833 wpabuf_free(wps->dh_pubkey);
1834 wps->dh_pubkey = NULL;
1835 wpabuf_free(wps->dh_privkey);
1836 wps->dh_privkey = NULL;
1837 return -1;
1838 }
1839 wps->dh_ctx = dh5_init_fixed(wps->dh_privkey, wps->dh_pubkey);
1840 if (wps->dh_ctx == NULL)
1841 return -1;
1842
1843 wpa_snprintf_hex_uppercase(pw, sizeof(pw),
1844 wpabuf_head(wpa_s->conf->wps_nfc_dev_pw),
1845 wpabuf_len(wpa_s->conf->wps_nfc_dev_pw));
1846 return wpas_wps_start_pin(wpa_s, bssid, pw, 0,
1847 wpa_s->conf->wps_nfc_dev_pw_id);
1848 }
1849
1850
wpas_wps_use_cred(struct wpa_supplicant * wpa_s,struct wps_parse_attr * attr)1851 static int wpas_wps_use_cred(struct wpa_supplicant *wpa_s,
1852 struct wps_parse_attr *attr)
1853 {
1854 if (wps_oob_use_cred(wpa_s->wps, attr) < 0)
1855 return -1;
1856
1857 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
1858 return 0;
1859
1860 wpa_printf(MSG_DEBUG, "WPS: Request reconnection with new network "
1861 "based on the received credential added");
1862 wpa_s->normal_scans = 0;
1863 wpa_supplicant_reinit_autoscan(wpa_s);
1864 wpa_s->disconnected = 0;
1865 wpa_s->reassociate = 1;
1866 wpa_supplicant_req_scan(wpa_s, 0, 0);
1867
1868 return 0;
1869 }
1870
1871
1872 #ifdef CONFIG_WPS_ER
wpas_wps_add_nfc_password_token(struct wpa_supplicant * wpa_s,struct wps_parse_attr * attr)1873 static int wpas_wps_add_nfc_password_token(struct wpa_supplicant *wpa_s,
1874 struct wps_parse_attr *attr)
1875 {
1876 return wps_registrar_add_nfc_password_token(
1877 wpa_s->wps->registrar, attr->oob_dev_password,
1878 attr->oob_dev_password_len);
1879 }
1880 #endif /* CONFIG_WPS_ER */
1881
1882
wpas_wps_nfc_tag_process(struct wpa_supplicant * wpa_s,const struct wpabuf * wps)1883 static int wpas_wps_nfc_tag_process(struct wpa_supplicant *wpa_s,
1884 const struct wpabuf *wps)
1885 {
1886 struct wps_parse_attr attr;
1887
1888 wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1889
1890 if (wps_parse_msg(wps, &attr)) {
1891 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1892 return -1;
1893 }
1894
1895 if (attr.num_cred)
1896 return wpas_wps_use_cred(wpa_s, &attr);
1897
1898 #ifdef CONFIG_WPS_ER
1899 if (attr.oob_dev_password)
1900 return wpas_wps_add_nfc_password_token(wpa_s, &attr);
1901 #endif /* CONFIG_WPS_ER */
1902
1903 wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1904 return -1;
1905 }
1906
1907
wpas_wps_nfc_tag_read(struct wpa_supplicant * wpa_s,const struct wpabuf * data)1908 int wpas_wps_nfc_tag_read(struct wpa_supplicant *wpa_s,
1909 const struct wpabuf *data)
1910 {
1911 const struct wpabuf *wps = data;
1912 struct wpabuf *tmp = NULL;
1913 int ret;
1914
1915 if (wpabuf_len(data) < 4)
1916 return -1;
1917
1918 if (*wpabuf_head_u8(data) != 0x10) {
1919 /* Assume this contains full NDEF record */
1920 tmp = ndef_parse_wifi(data);
1921 if (tmp == NULL) {
1922 wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1923 return -1;
1924 }
1925 wps = tmp;
1926 }
1927
1928 ret = wpas_wps_nfc_tag_process(wpa_s, wps);
1929 wpabuf_free(tmp);
1930 return ret;
1931 }
1932
1933 #endif /* CONFIG_WPS_NFC */
1934
1935
1936 extern int wpa_debug_level;
1937
wpas_wps_dump_ap_info(struct wpa_supplicant * wpa_s)1938 static void wpas_wps_dump_ap_info(struct wpa_supplicant *wpa_s)
1939 {
1940 size_t i;
1941 struct os_time now;
1942
1943 if (wpa_debug_level > MSG_DEBUG)
1944 return;
1945
1946 if (wpa_s->wps_ap == NULL)
1947 return;
1948
1949 os_get_time(&now);
1950
1951 for (i = 0; i < wpa_s->num_wps_ap; i++) {
1952 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1953 struct wpa_blacklist *e = wpa_blacklist_get(wpa_s, ap->bssid);
1954
1955 wpa_printf(MSG_DEBUG, "WPS: AP[%d] " MACSTR " type=%d "
1956 "tries=%d last_attempt=%d sec ago blacklist=%d",
1957 (int) i, MAC2STR(ap->bssid), ap->type, ap->tries,
1958 ap->last_attempt.sec > 0 ?
1959 (int) now.sec - (int) ap->last_attempt.sec : -1,
1960 e ? e->count : 0);
1961 }
1962 }
1963
1964
wpas_wps_get_ap_info(struct wpa_supplicant * wpa_s,const u8 * bssid)1965 static struct wps_ap_info * wpas_wps_get_ap_info(struct wpa_supplicant *wpa_s,
1966 const u8 *bssid)
1967 {
1968 size_t i;
1969
1970 if (wpa_s->wps_ap == NULL)
1971 return NULL;
1972
1973 for (i = 0; i < wpa_s->num_wps_ap; i++) {
1974 struct wps_ap_info *ap = &wpa_s->wps_ap[i];
1975 if (os_memcmp(ap->bssid, bssid, ETH_ALEN) == 0)
1976 return ap;
1977 }
1978
1979 return NULL;
1980 }
1981
1982
wpas_wps_update_ap_info_bss(struct wpa_supplicant * wpa_s,struct wpa_scan_res * res)1983 static void wpas_wps_update_ap_info_bss(struct wpa_supplicant *wpa_s,
1984 struct wpa_scan_res *res)
1985 {
1986 struct wpabuf *wps;
1987 enum wps_ap_info_type type;
1988 struct wps_ap_info *ap;
1989 int r;
1990
1991 if (wpa_scan_get_vendor_ie(res, WPS_IE_VENDOR_TYPE) == NULL)
1992 return;
1993
1994 wps = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
1995 if (wps == NULL)
1996 return;
1997
1998 r = wps_is_addr_authorized(wps, wpa_s->own_addr, 1);
1999 if (r == 2)
2000 type = WPS_AP_SEL_REG_OUR;
2001 else if (r == 1)
2002 type = WPS_AP_SEL_REG;
2003 else
2004 type = WPS_AP_NOT_SEL_REG;
2005
2006 wpabuf_free(wps);
2007
2008 ap = wpas_wps_get_ap_info(wpa_s, res->bssid);
2009 if (ap) {
2010 if (ap->type != type) {
2011 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR
2012 " changed type %d -> %d",
2013 MAC2STR(res->bssid), ap->type, type);
2014 ap->type = type;
2015 if (type != WPS_AP_NOT_SEL_REG)
2016 wpa_blacklist_del(wpa_s, ap->bssid);
2017 }
2018 return;
2019 }
2020
2021 ap = os_realloc_array(wpa_s->wps_ap, wpa_s->num_wps_ap + 1,
2022 sizeof(struct wps_ap_info));
2023 if (ap == NULL)
2024 return;
2025
2026 wpa_s->wps_ap = ap;
2027 ap = &wpa_s->wps_ap[wpa_s->num_wps_ap];
2028 wpa_s->num_wps_ap++;
2029
2030 os_memset(ap, 0, sizeof(*ap));
2031 os_memcpy(ap->bssid, res->bssid, ETH_ALEN);
2032 ap->type = type;
2033 wpa_printf(MSG_DEBUG, "WPS: AP " MACSTR " type %d added",
2034 MAC2STR(ap->bssid), ap->type);
2035 }
2036
2037
wpas_wps_update_ap_info(struct wpa_supplicant * wpa_s,struct wpa_scan_results * scan_res)2038 void wpas_wps_update_ap_info(struct wpa_supplicant *wpa_s,
2039 struct wpa_scan_results *scan_res)
2040 {
2041 size_t i;
2042
2043 for (i = 0; i < scan_res->num; i++)
2044 wpas_wps_update_ap_info_bss(wpa_s, scan_res->res[i]);
2045
2046 wpas_wps_dump_ap_info(wpa_s);
2047 }
2048
2049
wpas_wps_notify_assoc(struct wpa_supplicant * wpa_s,const u8 * bssid)2050 void wpas_wps_notify_assoc(struct wpa_supplicant *wpa_s, const u8 *bssid)
2051 {
2052 struct wps_ap_info *ap;
2053 if (!wpa_s->wps_ap_iter)
2054 return;
2055 ap = wpas_wps_get_ap_info(wpa_s, bssid);
2056 if (ap == NULL)
2057 return;
2058 ap->tries++;
2059 os_get_time(&ap->last_attempt);
2060 }
2061