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
12 * See README and COPYING for more details.
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"
29 #include "wpa_supplicant_i.h"
32 #include "blacklist.h"
35 #include "p2p_supplicant.h"
36 #include "wps_supplicant.h"
39 #ifndef WPS_PIN_SCAN_IGNORE_SEL_REG
40 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
41 #endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */
43 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
44 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
47 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
49 if (!wpa_s->wps_success &&
50 wpa_s->current_ssid &&
51 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
52 const u8 *bssid = wpa_s->bssid;
53 if (is_zero_ether_addr(bssid))
54 bssid = wpa_s->pending_bssid;
56 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
57 " did not succeed - continue trying to find "
58 "suitable AP", MAC2STR(bssid));
59 wpa_blacklist_add(wpa_s, bssid);
61 wpa_supplicant_deauthenticate(wpa_s,
62 WLAN_REASON_DEAUTH_LEAVING);
63 wpa_s->reassociate = 1;
64 wpa_supplicant_req_scan(wpa_s,
65 wpa_s->blacklist_cleared ? 5 : 0, 0);
66 wpa_s->blacklist_cleared = 0;
70 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
72 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
73 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
74 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
75 "try to associate with the received credential");
76 wpa_supplicant_deauthenticate(wpa_s,
77 WLAN_REASON_DEAUTH_LEAVING);
79 wpa_s->wps_freq = wpa_s->assoc_freq;
80 wpa_s->reassociate = 1;
81 wpa_supplicant_req_scan(wpa_s, 0, 0);
85 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
86 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
87 "for external credential processing");
88 wpas_clear_wps(wpa_s);
89 wpa_supplicant_deauthenticate(wpa_s,
90 WLAN_REASON_DEAUTH_LEAVING);
98 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
99 struct wpa_ssid *ssid,
100 const struct wps_credential *cred)
102 struct wpa_driver_capa capa;
105 struct wpa_ie_data adv;
106 int wpa2 = 0, ccmp = 0;
109 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
110 * case they are configured for mixed mode operation (WPA+WPA2 and
111 * TKIP+CCMP). Try to use scan results to figure out whether the AP
112 * actually supports stronger security and select that if the client
113 * has support for it, too.
116 if (wpa_drv_get_capa(wpa_s, &capa))
117 return; /* Unknown what driver supports */
119 bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
121 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
122 "table - use credential as-is");
126 wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
128 ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
129 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
131 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
134 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
135 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
136 adv.pairwise_cipher & WPA_CIPHER_CCMP)
140 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
141 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
143 * TODO: This could be the initial AP configuration and the
144 * Beacon contents could change shortly. Should request a new
145 * scan and delay addition of the network until the updated
146 * scan results are available.
148 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
149 "support - use credential as-is");
153 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
154 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
155 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
156 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
157 "based on scan results");
158 if (wpa_s->conf->ap_scan == 1)
159 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
161 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
164 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
165 (ssid->proto & WPA_PROTO_WPA) &&
166 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
167 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
168 "based on scan results");
169 if (wpa_s->conf->ap_scan == 1)
170 ssid->proto |= WPA_PROTO_RSN;
172 ssid->proto = WPA_PROTO_RSN;
177 static int wpa_supplicant_wps_cred(void *ctx,
178 const struct wps_credential *cred)
180 struct wpa_supplicant *wpa_s = ctx;
181 struct wpa_ssid *ssid = wpa_s->current_ssid;
185 if ((wpa_s->conf->wps_cred_processing == 1 ||
186 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
187 size_t blen = cred->cred_attr_len * 2 + 1;
188 char *buf = os_malloc(blen);
190 wpa_snprintf_hex(buf, blen,
191 cred->cred_attr, cred->cred_attr_len);
192 wpa_msg(wpa_s, MSG_INFO, "%s%s",
193 WPS_EVENT_CRED_RECEIVED, buf);
197 wpas_notify_wps_credential(wpa_s, cred);
199 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
201 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
202 cred->cred_attr, cred->cred_attr_len);
204 if (wpa_s->conf->wps_cred_processing == 1)
207 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
208 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
210 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
211 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
212 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
213 cred->key, cred->key_len);
214 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
215 MAC2STR(cred->mac_addr));
217 auth_type = cred->auth_type;
218 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
219 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
220 "auth_type into WPA2PSK");
221 auth_type = WPS_AUTH_WPA2PSK;
224 if (auth_type != WPS_AUTH_OPEN &&
225 auth_type != WPS_AUTH_SHARED &&
226 auth_type != WPS_AUTH_WPAPSK &&
227 auth_type != WPS_AUTH_WPA2PSK) {
228 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
229 "unsupported authentication type 0x%x",
234 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
235 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
236 "on the received credential");
237 os_free(ssid->eap.identity);
238 ssid->eap.identity = NULL;
239 ssid->eap.identity_len = 0;
240 os_free(ssid->eap.phase1);
241 ssid->eap.phase1 = NULL;
242 os_free(ssid->eap.eap_methods);
243 ssid->eap.eap_methods = NULL;
244 if (!ssid->p2p_group)
247 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
248 "received credential");
249 ssid = wpa_config_add_network(wpa_s->conf);
252 wpas_notify_network_added(wpa_s, ssid);
255 wpa_config_set_network_defaults(ssid);
258 ssid->ssid = os_malloc(cred->ssid_len);
260 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
261 ssid->ssid_len = cred->ssid_len;
264 switch (cred->encr_type) {
268 if (cred->key_len <= 0)
270 if (cred->key_len != 5 && cred->key_len != 13 &&
271 cred->key_len != 10 && cred->key_len != 26) {
272 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
273 "%lu", (unsigned long) cred->key_len);
276 if (cred->key_idx > NUM_WEP_KEYS) {
277 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
282 key_idx = cred->key_idx - 1;
283 if (cred->key_len == 10 || cred->key_len == 26) {
284 if (hexstr2bin((char *) cred->key,
285 ssid->wep_key[key_idx],
286 cred->key_len / 2) < 0) {
287 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
291 ssid->wep_key_len[key_idx] = cred->key_len / 2;
293 os_memcpy(ssid->wep_key[key_idx], cred->key,
295 ssid->wep_key_len[key_idx] = cred->key_len;
297 ssid->wep_tx_keyidx = key_idx;
300 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
303 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
309 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
310 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
313 case WPS_AUTH_SHARED:
314 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
315 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
318 case WPS_AUTH_WPAPSK:
319 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
320 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
321 ssid->proto = WPA_PROTO_WPA;
324 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
325 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
326 ssid->proto = WPA_PROTO_WPA;
329 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
330 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
331 ssid->proto = WPA_PROTO_RSN;
333 case WPS_AUTH_WPA2PSK:
334 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
335 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
336 ssid->proto = WPA_PROTO_RSN;
340 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
341 if (cred->key_len == 2 * PMK_LEN) {
342 if (hexstr2bin((const char *) cred->key, ssid->psk,
344 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
349 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
350 os_free(ssid->passphrase);
351 ssid->passphrase = os_malloc(cred->key_len + 1);
352 if (ssid->passphrase == NULL)
354 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
355 ssid->passphrase[cred->key_len] = '\0';
356 wpa_config_update_psk(ssid);
358 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
360 (unsigned long) cred->key_len);
365 wpas_wps_security_workaround(wpa_s, ssid, cred);
367 #ifndef CONFIG_NO_CONFIG_WRITE
368 if (wpa_s->conf->update_config &&
369 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
370 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
373 #endif /* CONFIG_NO_CONFIG_WRITE */
379 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
380 struct wps_event_m2d *m2d)
382 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
383 "dev_password_id=%d config_error=%d",
384 m2d->dev_password_id, m2d->config_error);
385 wpas_notify_wps_event_m2d(wpa_s, m2d);
389 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
390 struct wps_event_fail *fail)
392 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
393 wpas_clear_wps(wpa_s);
394 wpas_notify_wps_event_fail(wpa_s, fail);
398 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
400 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
401 wpa_s->wps_success = 1;
402 wpas_notify_wps_event_success(wpa_s);
404 wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0);
405 #endif /* CONFIG_P2P */
409 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
410 struct wps_event_er_ap *ap)
413 char dev_type[WPS_DEV_TYPE_BUFSIZE];
415 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
416 if (ap->pri_dev_type)
417 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
422 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
423 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
424 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
425 ap->friendly_name ? ap->friendly_name : "",
426 ap->manufacturer ? ap->manufacturer : "",
427 ap->model_description ? ap->model_description : "",
428 ap->model_name ? ap->model_name : "",
429 ap->manufacturer_url ? ap->manufacturer_url : "",
430 ap->model_url ? ap->model_url : "");
434 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
435 struct wps_event_er_ap *ap)
438 uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
439 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
443 static void wpa_supplicant_wps_event_er_enrollee_add(
444 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
447 char dev_type[WPS_DEV_TYPE_BUFSIZE];
449 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
450 if (enrollee->pri_dev_type)
451 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
456 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
457 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
459 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
460 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
461 enrollee->dev_name ? enrollee->dev_name : "",
462 enrollee->manufacturer ? enrollee->manufacturer : "",
463 enrollee->model_name ? enrollee->model_name : "",
464 enrollee->model_number ? enrollee->model_number : "",
465 enrollee->serial_number ? enrollee->serial_number : "");
469 static void wpa_supplicant_wps_event_er_enrollee_remove(
470 struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
473 uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
474 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
475 uuid_str, MAC2STR(enrollee->mac_addr));
479 static void wpa_supplicant_wps_event_er_ap_settings(
480 struct wpa_supplicant *wpa_s,
481 struct wps_event_er_ap_settings *ap_settings)
485 const struct wps_credential *cred = ap_settings->cred;
488 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
489 if (cred->key_len >= 8 && cred->key_len <= 64) {
490 os_memcpy(key_str, cred->key, cred->key_len);
491 key_str[cred->key_len] = '\0';
495 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
496 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
497 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
498 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
500 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
501 cred->auth_type, cred->encr_type, key_str);
505 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
506 union wps_event_data *data)
508 struct wpa_supplicant *wpa_s = ctx;
511 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
514 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
517 wpa_supplicant_wps_event_success(wpa_s);
519 case WPS_EV_PWD_AUTH_FAIL:
521 case WPS_EV_PBC_OVERLAP:
523 case WPS_EV_PBC_TIMEOUT:
525 case WPS_EV_ER_AP_ADD:
526 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
528 case WPS_EV_ER_AP_REMOVE:
529 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
531 case WPS_EV_ER_ENROLLEE_ADD:
532 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
535 case WPS_EV_ER_ENROLLEE_REMOVE:
536 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
539 case WPS_EV_ER_AP_SETTINGS:
540 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
547 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
549 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
550 eap_is_wps_pin_enrollee(&ssid->eap))
551 return WPS_REQ_ENROLLEE;
553 return WPS_REQ_REGISTRAR;
557 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
560 struct wpa_ssid *ssid, *remove_ssid = NULL;
562 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
564 /* Remove any existing WPS network from configuration */
565 ssid = wpa_s->conf->ssid;
567 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
568 if (ssid == wpa_s->current_ssid) {
569 wpa_s->current_ssid = NULL;
571 wpas_notify_network_changed(wpa_s);
579 wpas_notify_network_removed(wpa_s, remove_ssid);
580 wpa_config_remove_network(wpa_s->conf, id);
586 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
588 struct wpa_supplicant *wpa_s = eloop_ctx;
589 wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
591 wpas_clear_wps(wpa_s);
595 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
596 int registrar, const u8 *bssid)
598 struct wpa_ssid *ssid;
600 ssid = wpa_config_add_network(wpa_s->conf);
603 wpas_notify_network_added(wpa_s, ssid);
604 wpa_config_set_network_defaults(ssid);
606 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
607 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
608 wpa_config_set(ssid, "identity", registrar ?
609 "\"" WSC_ID_REGISTRAR "\"" :
610 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
611 wpas_notify_network_removed(wpa_s, ssid);
612 wpa_config_remove_network(wpa_s->conf, ssid->id);
620 #endif /* CONFIG_P2P */
622 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
626 * Note: With P2P, the SSID may change at the time the WPS
627 * provisioning is started, so better not filter the AP based
628 * on the current SSID in the scan results.
631 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
632 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
636 ssid->ssid = os_malloc(bss->ssid_len);
637 if (ssid->ssid == NULL)
639 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
640 ssid->ssid_len = bss->ssid_len;
641 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
643 ssid->ssid, ssid->ssid_len);
648 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
649 "for the AP; use wildcard");
654 #endif /* CONFIG_P2P */
661 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
662 struct wpa_ssid *selected)
664 struct wpa_ssid *ssid;
666 /* Mark all other networks disabled and trigger reassociation */
667 ssid = wpa_s->conf->ssid;
669 int was_disabled = ssid->disabled;
670 ssid->disabled = ssid != selected;
671 if (was_disabled != ssid->disabled)
672 wpas_notify_network_enabled_changed(wpa_s, ssid);
675 wpa_s->disconnected = 0;
676 wpa_s->reassociate = 1;
677 wpa_s->scan_runs = 0;
678 wpa_s->wps_success = 0;
679 wpa_s->blacklist_cleared = 0;
680 wpa_supplicant_req_scan(wpa_s, 0, 0);
684 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid,
687 struct wpa_ssid *ssid;
688 wpas_clear_wps(wpa_s);
689 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
693 ssid->p2p_group = p2p_group;
694 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
695 if (wpa_s->wps_fragment_size)
696 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
697 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
699 wpas_wps_reassoc(wpa_s, ssid);
704 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
705 const char *pin, int p2p_group, u16 dev_pw_id)
707 struct wpa_ssid *ssid;
709 unsigned int rpin = 0;
711 wpas_clear_wps(wpa_s);
712 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
716 ssid->p2p_group = p2p_group;
718 os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"",
721 rpin = wps_generate_pin();
722 os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"",
725 wpa_config_set(ssid, "phase1", val, 0);
726 if (wpa_s->wps_fragment_size)
727 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
728 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
730 wpas_wps_reassoc(wpa_s, ssid);
735 #ifdef CONFIG_WPS_OOB
736 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
737 char *path, char *method, char *name)
739 struct wps_context *wps = wpa_s->wps;
740 struct oob_device_data *oob_dev;
742 oob_dev = wps_get_oob_device(device_type);
745 oob_dev->device_path = path;
746 oob_dev->device_name = name;
747 wps->oob_conf.oob_method = wps_get_oob_method(method);
749 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
751 * Use pre-configured DH keys in order to be able to write the
752 * key hash into the OOB file.
754 wpabuf_free(wps->dh_pubkey);
755 wpabuf_free(wps->dh_privkey);
756 wps->dh_privkey = NULL;
757 wps->dh_pubkey = NULL;
758 dh5_free(wps->dh_ctx);
759 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
760 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
761 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
762 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
763 "Diffie-Hellman handshake");
768 if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
769 wpas_clear_wps(wpa_s);
771 if (wps_process_oob(wps, oob_dev, 0) < 0)
774 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
775 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
776 wpas_wps_start_pin(wpa_s, NULL,
777 wpabuf_head(wps->oob_conf.dev_password), 0) < 0)
782 #endif /* CONFIG_WPS_OOB */
785 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
786 const char *pin, struct wps_new_ap_settings *settings)
788 struct wpa_ssid *ssid;
795 wpas_clear_wps(wpa_s);
796 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
801 end = pos + sizeof(val);
802 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
803 if (res < 0 || res >= end - pos)
807 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
808 "new_encr=%s new_key=%s",
809 settings->ssid_hex, settings->auth,
810 settings->encr, settings->key_hex);
811 if (res < 0 || res >= end - pos)
815 res = os_snprintf(pos, end - pos, "\"");
816 if (res < 0 || res >= end - pos)
818 wpa_config_set(ssid, "phase1", val, 0);
819 if (wpa_s->wps_fragment_size)
820 ssid->eap.fragment_size = wpa_s->wps_fragment_size;
821 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
823 wpas_wps_reassoc(wpa_s, ssid);
828 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
831 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
832 "STA " MACSTR, MAC2STR(mac_addr));
833 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
841 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
842 const struct wps_device_data *dev)
844 char uuid[40], txt[400];
846 char devtype[WPS_DEV_TYPE_BUFSIZE];
847 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
849 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
850 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
851 " [%s|%s|%s|%s|%s|%s]",
852 uuid, MAC2STR(dev->mac_addr), dev->device_name,
853 dev->manufacturer, dev->model_name,
854 dev->model_number, dev->serial_number,
855 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
857 if (len > 0 && len < (int) sizeof(txt))
858 wpa_printf(MSG_INFO, "%s", txt);
862 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
863 u16 sel_reg_config_methods)
866 struct wpa_supplicant *wpa_s = ctx;
868 if (wpa_s->wps_er == NULL)
870 wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d "
871 "dev_password_id=%u sel_reg_config_methods=0x%x",
872 sel_reg, dev_passwd_id, sel_reg_config_methods);
873 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
874 sel_reg_config_methods);
875 #endif /* CONFIG_WPS_ER */
879 int wpas_wps_init(struct wpa_supplicant *wpa_s)
881 struct wps_context *wps;
882 struct wps_registrar_config rcfg;
884 wps = os_zalloc(sizeof(*wps));
888 wps->cred_cb = wpa_supplicant_wps_cred;
889 wps->event_cb = wpa_supplicant_wps_event;
892 wps->dev.device_name = wpa_s->conf->device_name;
893 wps->dev.manufacturer = wpa_s->conf->manufacturer;
894 wps->dev.model_name = wpa_s->conf->model_name;
895 wps->dev.model_number = wpa_s->conf->model_number;
896 wps->dev.serial_number = wpa_s->conf->serial_number;
897 wps->config_methods =
898 wps_config_methods_str2bin(wpa_s->conf->config_methods);
899 if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
900 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
901 wpa_printf(MSG_ERROR, "WPS: Both Label and Display config "
902 "methods are not allowed at the same time");
906 if (wpa_s->conf->device_type &&
907 wps_dev_type_str2bin(wpa_s->conf->device_type,
908 wps->dev.pri_dev_type) < 0) {
909 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
913 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
914 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
915 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
916 if (is_nil_uuid(wpa_s->conf->uuid)) {
917 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
918 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
919 wps->uuid, WPS_UUID_LEN);
921 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
923 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
924 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
926 os_memset(&rcfg, 0, sizeof(rcfg));
927 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
928 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
929 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
932 wps->registrar = wps_registrar_init(wps, &rcfg);
933 if (wps->registrar == NULL) {
934 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
945 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
947 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
949 if (wpa_s->wps == NULL)
953 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
954 wpa_s->wps_er = NULL;
955 #endif /* CONFIG_WPS_ER */
957 wps_registrar_deinit(wpa_s->wps->registrar);
958 wpabuf_free(wpa_s->wps->dh_pubkey);
959 wpabuf_free(wpa_s->wps->dh_privkey);
960 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
961 wpabuf_free(wpa_s->wps->oob_conf.dev_password);
962 os_free(wpa_s->wps->network_key);
968 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
969 struct wpa_ssid *ssid, struct wpa_scan_res *bss)
971 struct wpabuf *wps_ie;
973 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
976 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
977 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
979 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
983 if (!wps_is_selected_pbc_registrar(wps_ie)) {
984 wpa_printf(MSG_DEBUG, " skip - WPS AP "
985 "without active PBC Registrar");
990 /* TODO: overlap detection */
991 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
997 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
999 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
1004 * Start with WPS APs that advertise our address as an
1005 * authorized MAC (v2.0) or active PIN Registrar (v1.0) and
1006 * allow any WPS AP after couple of scans since some APs do not
1007 * set Selected Registrar attribute properly when using
1008 * external Registrar.
1010 if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) {
1011 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
1012 wpa_printf(MSG_DEBUG, " skip - WPS AP "
1013 "without active PIN Registrar");
1014 wpabuf_free(wps_ie);
1017 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1019 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
1020 "(Authorized MAC or Active PIN)");
1022 wpabuf_free(wps_ie);
1027 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
1028 wpabuf_free(wps_ie);
1036 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
1037 struct wpa_ssid *ssid,
1038 struct wpa_scan_res *bss)
1040 struct wpabuf *wps_ie = NULL;
1043 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1044 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1045 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1046 /* allow wildcard SSID for WPS PBC */
1049 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1050 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1052 (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) ||
1053 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1054 /* allow wildcard SSID for WPS PIN */
1059 if (!ret && ssid->bssid_set &&
1060 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1061 /* allow wildcard SSID due to hardcoded BSSID match */
1065 #ifdef CONFIG_WPS_STRICT
1067 if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len >
1070 if (bss->beacon_ie_len) {
1071 struct wpabuf *bcn_wps;
1072 bcn_wps = wpa_scan_get_vendor_ie_multi_beacon(
1073 bss, WPS_IE_VENDOR_TYPE);
1074 if (bcn_wps == NULL) {
1075 wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE "
1076 "missing from AP Beacon");
1079 if (wps_validate_beacon(wps_ie) < 0)
1081 wpabuf_free(bcn_wps);
1085 #endif /* CONFIG_WPS_STRICT */
1087 wpabuf_free(wps_ie);
1093 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1094 struct wpa_bss *selected, struct wpa_ssid *ssid)
1096 const u8 *sel_uuid, *uuid;
1097 struct wpabuf *wps_ie;
1099 struct wpa_bss *bss;
1101 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1104 /* Make sure that only one AP is in active PBC mode */
1105 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1107 sel_uuid = wps_get_uuid_e(wps_ie);
1111 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1113 if (bss == selected)
1115 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1118 if (!wps_is_selected_pbc_registrar(ie)) {
1122 uuid = wps_get_uuid_e(ie);
1123 if (sel_uuid == NULL || uuid == NULL ||
1124 os_memcmp(sel_uuid, uuid, 16) != 0) {
1125 ret = 1; /* PBC overlap */
1130 /* TODO: verify that this is reasonable dual-band situation */
1135 wpabuf_free(wps_ie);
1141 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1143 struct wpa_bss *bss;
1145 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1148 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1150 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1153 if (wps_is_selected_pbc_registrar(ie))
1154 wpa_msg_ctrl(wpa_s, MSG_INFO,
1155 WPS_EVENT_AP_AVAILABLE_PBC);
1156 else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0))
1157 wpa_msg_ctrl(wpa_s, MSG_INFO,
1158 WPS_EVENT_AP_AVAILABLE_AUTH);
1159 else if (wps_is_selected_pin_registrar(ie))
1160 wpa_msg_ctrl(wpa_s, MSG_INFO,
1161 WPS_EVENT_AP_AVAILABLE_PIN);
1163 wpa_msg_ctrl(wpa_s, MSG_INFO,
1164 WPS_EVENT_AP_AVAILABLE);
1171 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1173 struct wpa_ssid *ssid;
1175 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1176 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1184 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1187 struct wpabuf *wps_ie;
1190 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1194 ret = wps_attr_text(wps_ie, buf, end);
1195 wpabuf_free(wps_ie);
1200 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1202 #ifdef CONFIG_WPS_ER
1203 if (wpa_s->wps_er) {
1204 wps_er_refresh(wpa_s->wps_er);
1207 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1208 if (wpa_s->wps_er == NULL)
1211 #else /* CONFIG_WPS_ER */
1213 #endif /* CONFIG_WPS_ER */
1217 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1219 #ifdef CONFIG_WPS_ER
1220 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1221 wpa_s->wps_er = NULL;
1222 #endif /* CONFIG_WPS_ER */
1227 #ifdef CONFIG_WPS_ER
1228 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr,
1229 const char *uuid, const char *pin)
1234 if (os_strcmp(uuid, "any") == 0)
1236 else if (uuid_str2bin(uuid, u))
1238 return wps_registrar_add_pin(wpa_s->wps->registrar, addr,
1240 (const u8 *) pin, os_strlen(pin), 300);
1244 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1248 if (uuid_str2bin(uuid, u))
1250 return wps_er_pbc(wpa_s->wps_er, u);
1254 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1259 if (uuid_str2bin(uuid, u))
1261 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1266 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1267 const char *pin, struct wps_new_ap_settings *settings)
1270 struct wps_credential cred;
1273 if (uuid_str2bin(uuid, u))
1275 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1276 settings->encr == NULL || settings->key_hex == NULL)
1279 os_memset(&cred, 0, sizeof(cred));
1280 len = os_strlen(settings->ssid_hex);
1281 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1282 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1284 cred.ssid_len = len / 2;
1286 len = os_strlen(settings->key_hex);
1287 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1288 hexstr2bin(settings->key_hex, cred.key, len / 2))
1290 cred.key_len = len / 2;
1292 if (os_strcmp(settings->auth, "OPEN") == 0)
1293 cred.auth_type = WPS_AUTH_OPEN;
1294 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1295 cred.auth_type = WPS_AUTH_WPAPSK;
1296 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1297 cred.auth_type = WPS_AUTH_WPA2PSK;
1301 if (os_strcmp(settings->encr, "NONE") == 0)
1302 cred.encr_type = WPS_ENCR_NONE;
1303 else if (os_strcmp(settings->encr, "WEP") == 0)
1304 cred.encr_type = WPS_ENCR_WEP;
1305 else if (os_strcmp(settings->encr, "TKIP") == 0)
1306 cred.encr_type = WPS_ENCR_TKIP;
1307 else if (os_strcmp(settings->encr, "CCMP") == 0)
1308 cred.encr_type = WPS_ENCR_AES;
1312 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1313 os_strlen(pin), &cred);
1317 static void wpas_wps_terminate_cb(void *ctx)
1319 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1322 #endif /* CONFIG_WPS_ER */
1325 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1327 #ifdef CONFIG_WPS_ER
1328 if (wpa_s->wps_er) {
1329 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1330 wpa_s->wps_er = NULL;
1333 #endif /* CONFIG_WPS_ER */
1338 int wpas_wps_in_progress(struct wpa_supplicant *wpa_s)
1340 struct wpa_ssid *ssid;
1342 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1343 if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS)
1351 void wpas_wps_update_config(struct wpa_supplicant *wpa_s)
1353 struct wps_context *wps = wpa_s->wps;
1358 if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) {
1359 wps->config_methods = wps_config_methods_str2bin(
1360 wpa_s->conf->config_methods);
1361 if ((wps->config_methods &
1362 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) ==
1363 (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) {
1364 wpa_printf(MSG_ERROR, "WPS: Both Label and Display "
1365 "config methods are not allowed at the "
1367 wps->config_methods &= ~WPS_CONFIG_LABEL;
1371 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) {
1372 if (wpa_s->conf->device_type &&
1373 wps_dev_type_str2bin(wpa_s->conf->device_type,
1374 wps->dev.pri_dev_type) < 0)
1375 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
1378 if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION)
1379 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
1381 if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) {
1382 if (is_nil_uuid(wpa_s->conf->uuid)) {
1383 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
1384 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1385 "address", wps->uuid, WPS_UUID_LEN);
1387 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);