Check for SYS/GL during library init. Reason is that
[AROS.git] / workbench / network / WirelessManager / wpa_supplicant / wps_supplicant.c
blobba94d330b46379c7adc47890f9745419496a9585
1 /*
2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008-2010, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
12 * See README and COPYING for more details.
15 #include "includes.h"
17 #include "common.h"
18 #include "eloop.h"
19 #include "uuid.h"
20 #include "crypto/dh_group5.h"
21 #include "common/ieee802_11_defs.h"
22 #include "common/ieee802_11_common.h"
23 #include "common/wpa_common.h"
24 #include "common/wpa_ctrl.h"
25 #include "eap_common/eap_wsc_common.h"
26 #include "eap_peer/eap.h"
27 #include "rsn_supp/wpa.h"
28 #include "config.h"
29 #include "wpa_supplicant_i.h"
30 #include "driver_i.h"
31 #include "notify.h"
32 #include "blacklist.h"
33 #include "bss.h"
34 #include "scan.h"
35 #include "wps_supplicant.h"
38 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
40 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
41 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
44 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
46 if (!wpa_s->wps_success &&
47 wpa_s->current_ssid &&
48 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
49 const u8 *bssid = wpa_s->bssid;
50 if (is_zero_ether_addr(bssid))
51 bssid = wpa_s->pending_bssid;
53 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
54 " did not succeed - continue trying to find "
55 "suitable AP", MAC2STR(bssid));
56 wpa_blacklist_add(wpa_s, bssid);
58 wpa_supplicant_deauthenticate(wpa_s,
59 WLAN_REASON_DEAUTH_LEAVING);
60 wpa_s->reassociate = 1;
61 wpa_supplicant_req_scan(wpa_s,
62 wpa_s->blacklist_cleared ? 5 : 0, 0);
63 wpa_s->blacklist_cleared = 0;
64 return 1;
67 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
69 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
70 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
71 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
72 "try to associate with the received credential");
73 wpa_supplicant_deauthenticate(wpa_s,
74 WLAN_REASON_DEAUTH_LEAVING);
75 wpa_s->after_wps = 5;
76 wpa_s->wps_freq = wpa_s->assoc_freq;
77 wpa_s->reassociate = 1;
78 wpa_supplicant_req_scan(wpa_s, 0, 0);
79 return 1;
82 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
83 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
84 "for external credential processing");
85 wpas_clear_wps(wpa_s);
86 wpa_supplicant_deauthenticate(wpa_s,
87 WLAN_REASON_DEAUTH_LEAVING);
88 return 1;
91 return 0;
95 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
96 struct wpa_ssid *ssid,
97 const struct wps_credential *cred)
99 struct wpa_driver_capa capa;
100 struct wpa_bss *bss;
101 const u8 *ie;
102 struct wpa_ie_data adv;
103 int wpa2 = 0, ccmp = 0;
106 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
107 * case they are configured for mixed mode operation (WPA+WPA2 and
108 * TKIP+CCMP). Try to use scan results to figure out whether the AP
109 * actually supports stronger security and select that if the client
110 * has support for it, too.
113 if (wpa_drv_get_capa(wpa_s, &capa))
114 return; /* Unknown what driver supports */
116 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
117 if (bss == NULL) {
118 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
119 "table - use credential as-is");
120 return;
123 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
125 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
126 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
127 wpa2 = 1;
128 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
129 ccmp = 1;
130 } else {
131 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
132 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
133 adv.pairwise_cipher & WPA_CIPHER_CCMP)
134 ccmp = 1;
137 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
138 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
140 * TODO: This could be the initial AP configuration and the
141 * Beacon contents could change shortly. Should request a new
142 * scan and delay addition of the network until the updated
143 * scan results are available.
145 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
146 "support - use credential as-is");
147 return;
150 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
151 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
152 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
153 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
154 "based on scan results");
155 if (wpa_s->conf->ap_scan == 1)
156 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
157 else
158 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
161 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
162 (ssid->proto & WPA_PROTO_WPA) &&
163 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
164 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
165 "based on scan results");
166 if (wpa_s->conf->ap_scan == 1)
167 ssid->proto |= WPA_PROTO_RSN;
168 else
169 ssid->proto = WPA_PROTO_RSN;
174 static int wpa_supplicant_wps_cred(void *ctx,
175 const struct wps_credential *cred)
177 struct wpa_supplicant *wpa_s = ctx;
178 struct wpa_ssid *ssid = wpa_s->current_ssid;
179 u8 key_idx = 0;
180 u16 auth_type;
182 if ((wpa_s->conf->wps_cred_processing == 1 ||
183 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
184 size_t blen = cred->cred_attr_len * 2 + 1;
185 char *buf = os_malloc(blen);
186 if (buf) {
187 wpa_snprintf_hex(buf, blen,
188 cred->cred_attr, cred->cred_attr_len);
189 wpa_msg(wpa_s, MSG_INFO, "%s%s",
190 WPS_EVENT_CRED_RECEIVED, buf);
191 os_free(buf);
194 wpas_notify_wps_credential(wpa_s, cred);
195 } else
196 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
198 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
199 cred->cred_attr, cred->cred_attr_len);
201 if (wpa_s->conf->wps_cred_processing == 1)
202 return 0;
204 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
205 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
206 cred->auth_type);
207 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
208 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
209 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
210 cred->key, cred->key_len);
211 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
212 MAC2STR(cred->mac_addr));
214 auth_type = cred->auth_type;
215 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
216 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
217 "auth_type into WPA2PSK");
218 auth_type = WPS_AUTH_WPA2PSK;
221 if (auth_type != WPS_AUTH_OPEN &&
222 auth_type != WPS_AUTH_SHARED &&
223 auth_type != WPS_AUTH_WPAPSK &&
224 auth_type != WPS_AUTH_WPA2PSK) {
225 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
226 "unsupported authentication type 0x%x",
227 auth_type);
228 return 0;
231 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
232 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
233 "on the received credential");
234 os_free(ssid->eap.identity);
235 ssid->eap.identity = NULL;
236 ssid->eap.identity_len = 0;
237 os_free(ssid->eap.phase1);
238 ssid->eap.phase1 = NULL;
239 os_free(ssid->eap.eap_methods);
240 ssid->eap.eap_methods = NULL;
241 } else {
242 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
243 "received credential");
244 ssid = wpa_config_add_network(wpa_s->conf);
245 if (ssid == NULL)
246 return -1;
247 wpas_notify_network_added(wpa_s, ssid);
250 wpa_config_set_network_defaults(ssid);
252 os_free(ssid->ssid);
253 ssid->ssid = os_malloc(cred->ssid_len);
254 if (ssid->ssid) {
255 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
256 ssid->ssid_len = cred->ssid_len;
259 switch (cred->encr_type) {
260 case WPS_ENCR_NONE:
261 break;
262 case WPS_ENCR_WEP:
263 if (cred->key_len <= 0)
264 break;
265 if (cred->key_len != 5 && cred->key_len != 13 &&
266 cred->key_len != 10 && cred->key_len != 26) {
267 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
268 "%lu", (unsigned long) cred->key_len);
269 return -1;
271 if (cred->key_idx > NUM_WEP_KEYS) {
272 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
273 cred->key_idx);
274 return -1;
276 if (cred->key_idx)
277 key_idx = cred->key_idx - 1;
278 if (cred->key_len == 10 || cred->key_len == 26) {
279 if (hexstr2bin((char *) cred->key,
280 ssid->wep_key[key_idx],
281 cred->key_len / 2) < 0) {
282 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
283 "%d", key_idx);
284 return -1;
286 ssid->wep_key_len[key_idx] = cred->key_len / 2;
287 } else {
288 os_memcpy(ssid->wep_key[key_idx], cred->key,
289 cred->key_len);
290 ssid->wep_key_len[key_idx] = cred->key_len;
292 ssid->wep_tx_keyidx = key_idx;
293 break;
294 case WPS_ENCR_TKIP:
295 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
296 break;
297 case WPS_ENCR_AES:
298 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
299 break;
302 switch (auth_type) {
303 case WPS_AUTH_OPEN:
304 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
305 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
306 ssid->proto = 0;
307 break;
308 case WPS_AUTH_SHARED:
309 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
310 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
311 ssid->proto = 0;
312 break;
313 case WPS_AUTH_WPAPSK:
314 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
315 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
316 ssid->proto = WPA_PROTO_WPA;
317 break;
318 case WPS_AUTH_WPA:
319 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
320 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
321 ssid->proto = WPA_PROTO_WPA;
322 break;
323 case WPS_AUTH_WPA2:
324 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
325 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
326 ssid->proto = WPA_PROTO_RSN;
327 break;
328 case WPS_AUTH_WPA2PSK:
329 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
330 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
331 ssid->proto = WPA_PROTO_RSN;
332 break;
335 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
336 if (cred->key_len == 2 * PMK_LEN) {
337 if (hexstr2bin((const char *) cred->key, ssid->psk,
338 PMK_LEN)) {
339 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
340 "Key");
341 return -1;
343 ssid->psk_set = 1;
344 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
345 os_free(ssid->passphrase);
346 ssid->passphrase = os_malloc(cred->key_len + 1);
347 if (ssid->passphrase == NULL)
348 return -1;
349 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
350 ssid->passphrase[cred->key_len] = '\0';
351 wpa_config_update_psk(ssid);
352 } else {
353 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
354 "length %lu",
355 (unsigned long) cred->key_len);
356 return -1;
360 wpas_wps_security_workaround(wpa_s, ssid, cred);
362 #ifndef CONFIG_NO_CONFIG_WRITE
363 if (wpa_s->conf->update_config &&
364 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
365 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
366 return -1;
368 #endif /* CONFIG_NO_CONFIG_WRITE */
370 return 0;
374 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
375 struct wps_event_m2d *m2d)
377 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
378 "dev_password_id=%d config_error=%d",
379 m2d->dev_password_id, m2d->config_error);
380 wpas_notify_wps_event_m2d(wpa_s, m2d);
384 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
385 struct wps_event_fail *fail)
387 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
388 wpas_clear_wps(wpa_s);
389 wpas_notify_wps_event_fail(wpa_s, fail);
393 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
395 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
396 wpa_s->wps_success = 1;
397 wpas_notify_wps_event_success(wpa_s);
401 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
402 struct wps_event_er_ap *ap)
404 char uuid_str[100];
405 char dev_type[WPS_DEV_TYPE_BUFSIZE];
407 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
408 if (ap->pri_dev_type)
409 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
410 sizeof(dev_type));
411 else
412 dev_type[0] = '\0';
414 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
415 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
416 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
417 ap->friendly_name ? ap->friendly_name : "",
418 ap->manufacturer ? ap->manufacturer : "",
419 ap->model_description ? ap->model_description : "",
420 ap->model_name ? ap->model_name : "",
421 ap->manufacturer_url ? ap->manufacturer_url : "",
422 ap->model_url ? ap->model_url : "");
426 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
427 struct wps_event_er_ap *ap)
429 char uuid_str[100];
430 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
431 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
435 static void wpa_supplicant_wps_event_er_enrollee_add(
436 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
438 char uuid_str[100];
439 char dev_type[WPS_DEV_TYPE_BUFSIZE];
441 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
442 if (enrollee->pri_dev_type)
443 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
444 sizeof(dev_type));
445 else
446 dev_type[0] = '\0';
448 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
449 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
450 "|%s|%s|%s|%s|%s|",
451 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
452 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
453 enrollee->dev_name ? enrollee->dev_name : "",
454 enrollee->manufacturer ? enrollee->manufacturer : "",
455 enrollee->model_name ? enrollee->model_name : "",
456 enrollee->model_number ? enrollee->model_number : "",
457 enrollee->serial_number ? enrollee->serial_number : "");
461 static void wpa_supplicant_wps_event_er_enrollee_remove(
462 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
464 char uuid_str[100];
465 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
466 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
467 uuid_str, MAC2STR(enrollee->mac_addr));
471 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
472 union wps_event_data *data)
474 struct wpa_supplicant *wpa_s = ctx;
475 switch (event) {
476 case WPS_EV_M2D:
477 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
478 break;
479 case WPS_EV_FAIL:
480 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
481 break;
482 case WPS_EV_SUCCESS:
483 wpa_supplicant_wps_event_success(wpa_s);
484 break;
485 case WPS_EV_PWD_AUTH_FAIL:
486 break;
487 case WPS_EV_PBC_OVERLAP:
488 break;
489 case WPS_EV_PBC_TIMEOUT:
490 break;
491 case WPS_EV_ER_AP_ADD:
492 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
493 break;
494 case WPS_EV_ER_AP_REMOVE:
495 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
496 break;
497 case WPS_EV_ER_ENROLLEE_ADD:
498 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
499 &data->enrollee);
500 break;
501 case WPS_EV_ER_ENROLLEE_REMOVE:
502 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
503 &data->enrollee);
504 break;
509 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
511 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
512 eap_is_wps_pin_enrollee(&ssid->eap))
513 return WPS_REQ_ENROLLEE;
514 else
515 return WPS_REQ_REGISTRAR;
519 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
521 int id;
522 struct wpa_ssid *ssid, *remove_ssid = NULL;
524 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
526 /* Remove any existing WPS network from configuration */
527 ssid = wpa_s->conf->ssid;
528 while (ssid) {
529 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
530 if (ssid == wpa_s->current_ssid) {
531 wpa_s->current_ssid = NULL;
532 if (ssid != NULL)
533 wpas_notify_network_changed(wpa_s);
535 id = ssid->id;
536 remove_ssid = ssid;
537 } else
538 id = -1;
539 ssid = ssid->next;
540 if (id >= 0) {
541 wpas_notify_network_removed(wpa_s, remove_ssid);
542 wpa_config_remove_network(wpa_s->conf, id);
548 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
550 struct wpa_supplicant *wpa_s = eloop_ctx;
551 wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
552 "out");
553 wpas_clear_wps(wpa_s);
557 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
558 int registrar, const u8 *bssid)
560 struct wpa_ssid *ssid;
562 ssid = wpa_config_add_network(wpa_s->conf);
563 if (ssid == NULL)
564 return NULL;
565 wpas_notify_network_added(wpa_s, ssid);
566 wpa_config_set_network_defaults(ssid);
567 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
568 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
569 wpa_config_set(ssid, "identity", registrar ?
570 "\"" WSC_ID_REGISTRAR "\"" :
571 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
572 wpas_notify_network_removed(wpa_s, ssid);
573 wpa_config_remove_network(wpa_s->conf, ssid->id);
574 return NULL;
577 if (bssid) {
578 struct wpa_bss *bss;
579 int count = 0;
581 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
582 ssid->bssid_set = 1;
584 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
585 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
586 continue;
588 os_free(ssid->ssid);
589 ssid->ssid = os_malloc(bss->ssid_len);
590 if (ssid->ssid == NULL)
591 break;
592 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
593 ssid->ssid_len = bss->ssid_len;
594 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
595 "scan results",
596 ssid->ssid, ssid->ssid_len);
597 count++;
600 if (count > 1) {
601 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
602 "for the AP; use wildcard");
603 os_free(ssid->ssid);
604 ssid->ssid = NULL;
605 ssid->ssid_len = 0;
609 return ssid;
613 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
614 struct wpa_ssid *selected)
616 struct wpa_ssid *ssid;
618 /* Mark all other networks disabled and trigger reassociation */
619 ssid = wpa_s->conf->ssid;
620 while (ssid) {
621 int was_disabled = ssid->disabled;
622 ssid->disabled = ssid != selected;
623 if (was_disabled != ssid->disabled)
624 wpas_notify_network_enabled_changed(wpa_s, ssid);
625 ssid = ssid->next;
627 wpa_s->disconnected = 0;
628 wpa_s->reassociate = 1;
629 wpa_s->scan_runs = 0;
630 wpa_s->wps_success = 0;
631 wpa_s->blacklist_cleared = 0;
632 wpa_supplicant_req_scan(wpa_s, 0, 0);
636 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
638 struct wpa_ssid *ssid;
639 wpas_clear_wps(wpa_s);
640 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
641 if (ssid == NULL)
642 return -1;
643 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
644 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
645 wpa_s, NULL);
646 wpas_wps_reassoc(wpa_s, ssid);
647 return 0;
651 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
652 const char *pin)
654 struct wpa_ssid *ssid;
655 char val[128];
656 unsigned int rpin = 0;
658 wpas_clear_wps(wpa_s);
659 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
660 if (ssid == NULL)
661 return -1;
662 if (pin)
663 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
664 else {
665 rpin = wps_generate_pin();
666 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
668 wpa_config_set(ssid, "phase1", val, 0);
669 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
670 wpa_s, NULL);
671 wpas_wps_reassoc(wpa_s, ssid);
672 return rpin;
676 #ifdef CONFIG_WPS_OOB
677 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
678 char *path, char *method, char *name)
680 struct wps_context *wps = wpa_s->wps;
681 struct oob_device_data *oob_dev;
683 oob_dev = wps_get_oob_device(device_type);
684 if (oob_dev == NULL)
685 return -1;
686 oob_dev->device_path = path;
687 oob_dev->device_name = name;
688 wps->oob_conf.oob_method = wps_get_oob_method(method);
690 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
692 * Use pre-configured DH keys in order to be able to write the
693 * key hash into the OOB file.
695 wpabuf_free(wps->dh_pubkey);
696 wpabuf_free(wps->dh_privkey);
697 wps->dh_privkey = NULL;
698 wps->dh_pubkey = NULL;
699 dh5_free(wps->dh_ctx);
700 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
701 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
702 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
703 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
704 "Diffie-Hellman handshake");
705 return -1;
709 if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
710 wpas_clear_wps(wpa_s);
712 if (wps_process_oob(wps, oob_dev, 0) < 0)
713 return -1;
715 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
716 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
717 wpas_wps_start_pin(wpa_s, NULL,
718 wpabuf_head(wps->oob_conf.dev_password)) < 0)
719 return -1;
721 return 0;
723 #endif /* CONFIG_WPS_OOB */
726 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
727 const char *pin, struct wps_new_ap_settings *settings)
729 struct wpa_ssid *ssid;
730 char val[200];
731 char *pos, *end;
732 int res;
734 if (!pin)
735 return -1;
736 wpas_clear_wps(wpa_s);
737 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
738 if (ssid == NULL)
739 return -1;
740 pos = val;
741 end = pos + sizeof(val);
742 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
743 if (res < 0 || res >= end - pos)
744 return -1;
745 pos += res;
746 if (settings) {
747 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
748 "new_encr=%s new_key=%s",
749 settings->ssid_hex, settings->auth,
750 settings->encr, settings->key_hex);
751 if (res < 0 || res >= end - pos)
752 return -1;
753 pos += res;
755 res = os_snprintf(pos, end - pos, "\"");
756 if (res < 0 || res >= end - pos)
757 return -1;
758 wpa_config_set(ssid, "phase1", val, 0);
759 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
760 wpa_s, NULL);
761 wpas_wps_reassoc(wpa_s, ssid);
762 return 0;
766 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
767 size_t psk_len)
769 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
770 "STA " MACSTR, MAC2STR(mac_addr));
771 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
773 /* TODO */
775 return 0;
779 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
780 const struct wps_device_data *dev)
782 char uuid[40], txt[400];
783 int len;
784 char devtype[WPS_DEV_TYPE_BUFSIZE];
785 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
786 return;
787 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
788 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
789 " [%s|%s|%s|%s|%s|%s]",
790 uuid, MAC2STR(dev->mac_addr), dev->device_name,
791 dev->manufacturer, dev->model_name,
792 dev->model_number, dev->serial_number,
793 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
794 sizeof(devtype)));
795 if (len > 0 && len < (int) sizeof(txt))
796 wpa_printf(MSG_INFO, "%s", txt);
800 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
801 u16 sel_reg_config_methods)
803 #ifdef CONFIG_WPS_ER
804 struct wpa_supplicant *wpa_s = ctx;
806 if (wpa_s->wps_er == NULL)
807 return;
808 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
809 sel_reg_config_methods);
810 #endif /* CONFIG_WPS_ER */
814 int wpas_wps_init(struct wpa_supplicant *wpa_s)
816 struct wps_context *wps;
817 struct wps_registrar_config rcfg;
819 wps = os_zalloc(sizeof(*wps));
820 if (wps == NULL)
821 return -1;
823 wps->cred_cb = wpa_supplicant_wps_cred;
824 wps->event_cb = wpa_supplicant_wps_event;
825 wps->cb_ctx = wpa_s;
827 wps->dev.device_name = wpa_s->conf->device_name;
828 wps->dev.manufacturer = wpa_s->conf->manufacturer;
829 wps->dev.model_name = wpa_s->conf->model_name;
830 wps->dev.model_number = wpa_s->conf->model_number;
831 wps->dev.serial_number = wpa_s->conf->serial_number;
832 wps->config_methods =
833 wps_config_methods_str2bin(wpa_s->conf->config_methods);
834 if (wpa_s->conf->device_type &&
835 wps_dev_type_str2bin(wpa_s->conf->device_type,
836 wps->dev.pri_dev_type) < 0) {
837 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
838 os_free(wps);
839 return -1;
841 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
842 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
843 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
844 if (is_nil_uuid(wpa_s->conf->uuid)) {
845 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
846 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
847 wps->uuid, WPS_UUID_LEN);
848 } else
849 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
851 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
852 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
854 os_memset(&rcfg, 0, sizeof(rcfg));
855 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
856 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
857 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
858 rcfg.cb_ctx = wpa_s;
860 wps->registrar = wps_registrar_init(wps, &rcfg);
861 if (wps->registrar == NULL) {
862 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
863 os_free(wps);
864 return -1;
867 wpa_s->wps = wps;
869 return 0;
873 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
875 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
877 if (wpa_s->wps == NULL)
878 return;
880 #ifdef CONFIG_WPS_ER
881 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
882 wpa_s->wps_er = NULL;
883 #endif /* CONFIG_WPS_ER */
885 wps_registrar_deinit(wpa_s->wps->registrar);
886 wpabuf_free(wpa_s->wps->dh_pubkey);
887 wpabuf_free(wpa_s->wps->dh_privkey);
888 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
889 wpabuf_free(wpa_s->wps->oob_conf.dev_password);
890 os_free(wpa_s->wps->network_key);
891 os_free(wpa_s->wps);
892 wpa_s->wps = NULL;
896 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
897 struct wpa_ssid *ssid, struct wpa_scan_res *bss)
899 struct wpabuf *wps_ie;
901 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
902 return -1;
904 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
905 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
906 if (!wps_ie) {
907 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
908 return 0;
911 if (!wps_is_selected_pbc_registrar(wps_ie)) {
912 wpa_printf(MSG_DEBUG, " skip - WPS AP "
913 "without active PBC Registrar");
914 wpabuf_free(wps_ie);
915 return 0;
918 /* TODO: overlap detection */
919 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
920 "(Active PBC)");
921 wpabuf_free(wps_ie);
922 return 1;
925 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
926 if (!wps_ie) {
927 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
928 return 0;
932 * Start with WPS APs that advertise active PIN Registrar and
933 * allow any WPS AP after third scan since some APs do not set
934 * Selected Registrar attribute properly when using external
935 * Registrar.
937 if (!wps_is_selected_pin_registrar(wps_ie)) {
938 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
939 wpa_printf(MSG_DEBUG, " skip - WPS AP "
940 "without active PIN Registrar");
941 wpabuf_free(wps_ie);
942 return 0;
944 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
945 } else {
946 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
947 "(Active PIN)");
949 wpabuf_free(wps_ie);
950 return 1;
953 if (wps_ie) {
954 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
955 wpabuf_free(wps_ie);
956 return 1;
959 return -1;
963 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
964 struct wpa_ssid *ssid,
965 struct wpa_scan_res *bss)
967 struct wpabuf *wps_ie = NULL;
968 int ret = 0;
970 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
971 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
972 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
973 /* allow wildcard SSID for WPS PBC */
974 ret = 1;
976 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
977 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
978 if (wps_ie &&
979 (wps_is_selected_pin_registrar(wps_ie) ||
980 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
981 /* allow wildcard SSID for WPS PIN */
982 ret = 1;
986 if (!ret && ssid->bssid_set &&
987 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
988 /* allow wildcard SSID due to hardcoded BSSID match */
989 ret = 1;
992 wpabuf_free(wps_ie);
994 return ret;
998 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
999 struct wpa_bss *selected, struct wpa_ssid *ssid)
1001 const u8 *sel_uuid, *uuid;
1002 struct wpabuf *wps_ie;
1003 int ret = 0;
1004 struct wpa_bss *bss;
1006 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1007 return 0;
1009 /* Make sure that only one AP is in active PBC mode */
1010 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1011 if (wps_ie)
1012 sel_uuid = wps_get_uuid_e(wps_ie);
1013 else
1014 sel_uuid = NULL;
1016 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1017 struct wpabuf *ie;
1018 if (bss == selected)
1019 continue;
1020 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1021 if (!ie)
1022 continue;
1023 if (!wps_is_selected_pbc_registrar(ie)) {
1024 wpabuf_free(ie);
1025 continue;
1027 uuid = wps_get_uuid_e(ie);
1028 if (sel_uuid == NULL || uuid == NULL ||
1029 os_memcmp(sel_uuid, uuid, 16) != 0) {
1030 ret = 1; /* PBC overlap */
1031 wpabuf_free(ie);
1032 break;
1035 /* TODO: verify that this is reasonable dual-band situation */
1037 wpabuf_free(ie);
1040 wpabuf_free(wps_ie);
1042 return ret;
1046 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1048 struct wpa_bss *bss;
1050 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1051 return;
1053 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1054 struct wpabuf *ie;
1055 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1056 if (!ie)
1057 continue;
1058 if (wps_is_selected_pbc_registrar(ie))
1059 wpa_msg_ctrl(wpa_s, MSG_INFO,
1060 WPS_EVENT_AP_AVAILABLE_PBC);
1061 else if (wps_is_selected_pin_registrar(ie))
1062 wpa_msg_ctrl(wpa_s, MSG_INFO,
1063 WPS_EVENT_AP_AVAILABLE_PIN);
1064 else
1065 wpa_msg_ctrl(wpa_s, MSG_INFO,
1066 WPS_EVENT_AP_AVAILABLE);
1067 wpabuf_free(ie);
1068 break;
1073 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1075 struct wpa_ssid *ssid;
1077 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1078 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1079 return 1;
1082 return 0;
1086 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1087 char *end)
1089 struct wpabuf *wps_ie;
1090 int ret;
1092 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1093 if (wps_ie == NULL)
1094 return 0;
1096 ret = wps_attr_text(wps_ie, buf, end);
1097 wpabuf_free(wps_ie);
1098 return ret;
1102 int wpas_wps_er_start(struct wpa_supplicant *wpa_s)
1104 #ifdef CONFIG_WPS_ER
1105 if (wpa_s->wps_er) {
1106 wps_er_refresh(wpa_s->wps_er);
1107 return 0;
1109 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname);
1110 if (wpa_s->wps_er == NULL)
1111 return -1;
1112 return 0;
1113 #else /* CONFIG_WPS_ER */
1114 return 0;
1115 #endif /* CONFIG_WPS_ER */
1119 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1121 #ifdef CONFIG_WPS_ER
1122 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1123 wpa_s->wps_er = NULL;
1124 #endif /* CONFIG_WPS_ER */
1125 return 0;
1129 #ifdef CONFIG_WPS_ER
1130 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const char *uuid,
1131 const char *pin)
1133 u8 u[UUID_LEN];
1134 int any = 0;
1136 if (os_strcmp(uuid, "any") == 0)
1137 any = 1;
1138 else if (uuid_str2bin(uuid, u))
1139 return -1;
1140 return wps_registrar_add_pin(wpa_s->wps->registrar, any ? NULL : u,
1141 (const u8 *) pin, os_strlen(pin), 300);
1145 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1147 u8 u[UUID_LEN];
1149 if (uuid_str2bin(uuid, u))
1150 return -1;
1151 return wps_er_pbc(wpa_s->wps_er, u);
1155 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1156 const char *pin)
1158 u8 u[UUID_LEN];
1160 if (uuid_str2bin(uuid, u))
1161 return -1;
1162 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1163 os_strlen(pin));
1167 static void wpas_wps_terminate_cb(void *ctx)
1169 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1170 eloop_terminate();
1172 #endif /* CONFIG_WPS_ER */
1175 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1177 #ifdef CONFIG_WPS_ER
1178 if (wpa_s->wps_er) {
1179 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1180 wpa_s->wps_er = NULL;
1181 return 1;
1183 #endif /* CONFIG_WPS_ER */
1184 return 0;