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 "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;
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);
76 wpa_s->wps_freq = wpa_s->assoc_freq;
77 wpa_s->reassociate = 1;
78 wpa_supplicant_req_scan(wpa_s, 0, 0);
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);
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;
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);
118 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
119 "table - use credential as-is");
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) {
128 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
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)
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");
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;
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;
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;
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);
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);
194 wpas_notify_wps_credential(wpa_s, cred);
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)
204 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
205 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
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",
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;
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);
247 wpas_notify_network_added(wpa_s, ssid);
250 wpa_config_set_network_defaults(ssid);
253 ssid->ssid = os_malloc(cred->ssid_len);
255 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
256 ssid->ssid_len = cred->ssid_len;
259 switch (cred->encr_type) {
263 if (cred->key_len <= 0)
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);
271 if (cred->key_idx > NUM_WEP_KEYS) {
272 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
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 "
286 ssid->wep_key_len[key_idx] = cred->key_len / 2;
288 os_memcpy(ssid->wep_key[key_idx], cred->key,
290 ssid->wep_key_len[key_idx] = cred->key_len;
292 ssid->wep_tx_keyidx = key_idx;
295 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
298 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
304 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
305 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
308 case WPS_AUTH_SHARED:
309 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
310 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
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;
319 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
320 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
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_RSN;
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;
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,
339 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
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)
349 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
350 ssid->passphrase[cred->key_len] = '\0';
351 wpa_config_update_psk(ssid);
353 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
355 (unsigned long) cred->key_len);
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");
368 #endif /* CONFIG_NO_CONFIG_WRITE */
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)
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,
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)
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)
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,
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 "
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)
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_er_ap_settings(
472 struct wpa_supplicant *wpa_s,
473 struct wps_event_er_ap_settings *ap_settings)
477 const struct wps_credential *cred = ap_settings->cred;
480 if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
481 if (cred->key_len >= 8 && cred->key_len <= 64) {
482 os_memcpy(key_str, cred->key, cred->key_len);
483 key_str[cred->key_len] = '\0';
487 uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str));
488 /* Use wpa_msg_ctrl to avoid showing the key in debug log */
489 wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS
490 "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x "
492 uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len),
493 cred->auth_type, cred->encr_type, key_str);
497 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
498 union wps_event_data *data)
500 struct wpa_supplicant *wpa_s = ctx;
503 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
506 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
509 wpa_supplicant_wps_event_success(wpa_s);
511 case WPS_EV_PWD_AUTH_FAIL:
513 case WPS_EV_PBC_OVERLAP:
515 case WPS_EV_PBC_TIMEOUT:
517 case WPS_EV_ER_AP_ADD:
518 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
520 case WPS_EV_ER_AP_REMOVE:
521 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
523 case WPS_EV_ER_ENROLLEE_ADD:
524 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
527 case WPS_EV_ER_ENROLLEE_REMOVE:
528 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
531 case WPS_EV_ER_AP_SETTINGS:
532 wpa_supplicant_wps_event_er_ap_settings(wpa_s,
539 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
541 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
542 eap_is_wps_pin_enrollee(&ssid->eap))
543 return WPS_REQ_ENROLLEE;
545 return WPS_REQ_REGISTRAR;
549 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
552 struct wpa_ssid *ssid, *remove_ssid = NULL;
554 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
556 /* Remove any existing WPS network from configuration */
557 ssid = wpa_s->conf->ssid;
559 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
560 if (ssid == wpa_s->current_ssid) {
561 wpa_s->current_ssid = NULL;
563 wpas_notify_network_changed(wpa_s);
571 wpas_notify_network_removed(wpa_s, remove_ssid);
572 wpa_config_remove_network(wpa_s->conf, id);
578 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
580 struct wpa_supplicant *wpa_s = eloop_ctx;
581 wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
583 wpas_clear_wps(wpa_s);
587 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
588 int registrar, const u8 *bssid)
590 struct wpa_ssid *ssid;
592 ssid = wpa_config_add_network(wpa_s->conf);
595 wpas_notify_network_added(wpa_s, ssid);
596 wpa_config_set_network_defaults(ssid);
597 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
598 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
599 wpa_config_set(ssid, "identity", registrar ?
600 "\"" WSC_ID_REGISTRAR "\"" :
601 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
602 wpas_notify_network_removed(wpa_s, ssid);
603 wpa_config_remove_network(wpa_s->conf, ssid->id);
611 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
614 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
615 if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
619 ssid->ssid = os_malloc(bss->ssid_len);
620 if (ssid->ssid == NULL)
622 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
623 ssid->ssid_len = bss->ssid_len;
624 wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
626 ssid->ssid, ssid->ssid_len);
631 wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
632 "for the AP; use wildcard");
643 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
644 struct wpa_ssid *selected)
646 struct wpa_ssid *ssid;
648 /* Mark all other networks disabled and trigger reassociation */
649 ssid = wpa_s->conf->ssid;
651 int was_disabled = ssid->disabled;
652 ssid->disabled = ssid != selected;
653 if (was_disabled != ssid->disabled)
654 wpas_notify_network_enabled_changed(wpa_s, ssid);
657 wpa_s->disconnected = 0;
658 wpa_s->reassociate = 1;
659 wpa_s->scan_runs = 0;
660 wpa_s->wps_success = 0;
661 wpa_s->blacklist_cleared = 0;
662 wpa_supplicant_req_scan(wpa_s, 0, 0);
666 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
668 struct wpa_ssid *ssid;
669 wpas_clear_wps(wpa_s);
670 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
673 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
674 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
676 wpas_wps_reassoc(wpa_s, ssid);
681 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
684 struct wpa_ssid *ssid;
686 unsigned int rpin = 0;
688 wpas_clear_wps(wpa_s);
689 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
693 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
695 rpin = wps_generate_pin();
696 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
698 wpa_config_set(ssid, "phase1", val, 0);
699 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
701 wpas_wps_reassoc(wpa_s, ssid);
706 #ifdef CONFIG_WPS_OOB
707 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
708 char *path, char *method, char *name)
710 struct wps_context *wps = wpa_s->wps;
711 struct oob_device_data *oob_dev;
713 oob_dev = wps_get_oob_device(device_type);
716 oob_dev->device_path = path;
717 oob_dev->device_name = name;
718 wps->oob_conf.oob_method = wps_get_oob_method(method);
720 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
722 * Use pre-configured DH keys in order to be able to write the
723 * key hash into the OOB file.
725 wpabuf_free(wps->dh_pubkey);
726 wpabuf_free(wps->dh_privkey);
727 wps->dh_privkey = NULL;
728 wps->dh_pubkey = NULL;
729 dh5_free(wps->dh_ctx);
730 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
731 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
732 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
733 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
734 "Diffie-Hellman handshake");
739 if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
740 wpas_clear_wps(wpa_s);
742 if (wps_process_oob(wps, oob_dev, 0) < 0)
745 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
746 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
747 wpas_wps_start_pin(wpa_s, NULL,
748 wpabuf_head(wps->oob_conf.dev_password)) < 0)
753 #endif /* CONFIG_WPS_OOB */
756 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
757 const char *pin, struct wps_new_ap_settings *settings)
759 struct wpa_ssid *ssid;
766 wpas_clear_wps(wpa_s);
767 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
771 end = pos + sizeof(val);
772 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
773 if (res < 0 || res >= end - pos)
777 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
778 "new_encr=%s new_key=%s",
779 settings->ssid_hex, settings->auth,
780 settings->encr, settings->key_hex);
781 if (res < 0 || res >= end - pos)
785 res = os_snprintf(pos, end - pos, "\"");
786 if (res < 0 || res >= end - pos)
788 wpa_config_set(ssid, "phase1", val, 0);
789 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
791 wpas_wps_reassoc(wpa_s, ssid);
796 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
799 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
800 "STA " MACSTR, MAC2STR(mac_addr));
801 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
809 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
810 const struct wps_device_data *dev)
812 char uuid[40], txt[400];
814 char devtype[WPS_DEV_TYPE_BUFSIZE];
815 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
817 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
818 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
819 " [%s|%s|%s|%s|%s|%s]",
820 uuid, MAC2STR(dev->mac_addr), dev->device_name,
821 dev->manufacturer, dev->model_name,
822 dev->model_number, dev->serial_number,
823 wps_dev_type_bin2str(dev->pri_dev_type, devtype,
825 if (len > 0 && len < (int) sizeof(txt))
826 wpa_printf(MSG_INFO, "%s", txt);
830 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
831 u16 sel_reg_config_methods)
834 struct wpa_supplicant *wpa_s = ctx;
836 if (wpa_s->wps_er == NULL)
838 wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
839 sel_reg_config_methods);
840 #endif /* CONFIG_WPS_ER */
844 int wpas_wps_init(struct wpa_supplicant *wpa_s)
846 struct wps_context *wps;
847 struct wps_registrar_config rcfg;
849 wps = os_zalloc(sizeof(*wps));
853 wps->cred_cb = wpa_supplicant_wps_cred;
854 wps->event_cb = wpa_supplicant_wps_event;
857 wps->dev.device_name = wpa_s->conf->device_name;
858 wps->dev.manufacturer = wpa_s->conf->manufacturer;
859 wps->dev.model_name = wpa_s->conf->model_name;
860 wps->dev.model_number = wpa_s->conf->model_number;
861 wps->dev.serial_number = wpa_s->conf->serial_number;
862 wps->config_methods =
863 wps_config_methods_str2bin(wpa_s->conf->config_methods);
864 if (wpa_s->conf->device_type &&
865 wps_dev_type_str2bin(wpa_s->conf->device_type,
866 wps->dev.pri_dev_type) < 0) {
867 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
871 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
872 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
873 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
874 if (is_nil_uuid(wpa_s->conf->uuid)) {
875 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
876 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
877 wps->uuid, WPS_UUID_LEN);
879 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
881 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
882 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
884 os_memset(&rcfg, 0, sizeof(rcfg));
885 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
886 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
887 rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
890 wps->registrar = wps_registrar_init(wps, &rcfg);
891 if (wps->registrar == NULL) {
892 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
903 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
905 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
907 if (wpa_s->wps == NULL)
911 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
912 wpa_s->wps_er = NULL;
913 #endif /* CONFIG_WPS_ER */
915 wps_registrar_deinit(wpa_s->wps->registrar);
916 wpabuf_free(wpa_s->wps->dh_pubkey);
917 wpabuf_free(wpa_s->wps->dh_privkey);
918 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
919 wpabuf_free(wpa_s->wps->oob_conf.dev_password);
920 os_free(wpa_s->wps->network_key);
926 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
927 struct wpa_ssid *ssid, struct wpa_scan_res *bss)
929 struct wpabuf *wps_ie;
931 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
934 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
935 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
937 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
941 if (!wps_is_selected_pbc_registrar(wps_ie)) {
942 wpa_printf(MSG_DEBUG, " skip - WPS AP "
943 "without active PBC Registrar");
948 /* TODO: overlap detection */
949 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
955 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
957 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
962 * Start with WPS APs that advertise active PIN Registrar and
963 * allow any WPS AP after third scan since some APs do not set
964 * Selected Registrar attribute properly when using external
967 if (!wps_is_selected_pin_registrar(wps_ie)) {
968 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
969 wpa_printf(MSG_DEBUG, " skip - WPS AP "
970 "without active PIN Registrar");
974 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
976 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
984 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
993 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
994 struct wpa_ssid *ssid,
995 struct wpa_scan_res *bss)
997 struct wpabuf *wps_ie = NULL;
1000 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
1001 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1002 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
1003 /* allow wildcard SSID for WPS PBC */
1006 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
1007 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1009 (wps_is_selected_pin_registrar(wps_ie) ||
1010 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
1011 /* allow wildcard SSID for WPS PIN */
1016 if (!ret && ssid->bssid_set &&
1017 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
1018 /* allow wildcard SSID due to hardcoded BSSID match */
1022 wpabuf_free(wps_ie);
1028 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
1029 struct wpa_bss *selected, struct wpa_ssid *ssid)
1031 const u8 *sel_uuid, *uuid;
1032 struct wpabuf *wps_ie;
1034 struct wpa_bss *bss;
1036 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
1039 /* Make sure that only one AP is in active PBC mode */
1040 wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
1042 sel_uuid = wps_get_uuid_e(wps_ie);
1046 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1048 if (bss == selected)
1050 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1053 if (!wps_is_selected_pbc_registrar(ie)) {
1057 uuid = wps_get_uuid_e(ie);
1058 if (sel_uuid == NULL || uuid == NULL ||
1059 os_memcmp(sel_uuid, uuid, 16) != 0) {
1060 ret = 1; /* PBC overlap */
1065 /* TODO: verify that this is reasonable dual-band situation */
1070 wpabuf_free(wps_ie);
1076 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
1078 struct wpa_bss *bss;
1080 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
1083 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1085 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
1088 if (wps_is_selected_pbc_registrar(ie))
1089 wpa_msg_ctrl(wpa_s, MSG_INFO,
1090 WPS_EVENT_AP_AVAILABLE_PBC);
1091 else if (wps_is_selected_pin_registrar(ie))
1092 wpa_msg_ctrl(wpa_s, MSG_INFO,
1093 WPS_EVENT_AP_AVAILABLE_PIN);
1095 wpa_msg_ctrl(wpa_s, MSG_INFO,
1096 WPS_EVENT_AP_AVAILABLE);
1103 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1105 struct wpa_ssid *ssid;
1107 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1108 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1116 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1119 struct wpabuf *wps_ie;
1122 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1126 ret = wps_attr_text(wps_ie, buf, end);
1127 wpabuf_free(wps_ie);
1132 int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter)
1134 #ifdef CONFIG_WPS_ER
1135 if (wpa_s->wps_er) {
1136 wps_er_refresh(wpa_s->wps_er);
1139 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter);
1140 if (wpa_s->wps_er == NULL)
1143 #else /* CONFIG_WPS_ER */
1145 #endif /* CONFIG_WPS_ER */
1149 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1151 #ifdef CONFIG_WPS_ER
1152 wps_er_deinit(wpa_s->wps_er, NULL, NULL);
1153 wpa_s->wps_er = NULL;
1154 #endif /* CONFIG_WPS_ER */
1159 #ifdef CONFIG_WPS_ER
1160 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const char *uuid,
1166 if (os_strcmp(uuid, "any") == 0)
1168 else if (uuid_str2bin(uuid, u))
1170 return wps_registrar_add_pin(wpa_s->wps->registrar, any ? NULL : u,
1171 (const u8 *) pin, os_strlen(pin), 300);
1175 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
1179 if (uuid_str2bin(uuid, u))
1181 return wps_er_pbc(wpa_s->wps_er, u);
1185 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
1190 if (uuid_str2bin(uuid, u))
1192 return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
1197 int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid,
1198 const char *pin, struct wps_new_ap_settings *settings)
1201 struct wps_credential cred;
1204 if (uuid_str2bin(uuid, u))
1206 if (settings->ssid_hex == NULL || settings->auth == NULL ||
1207 settings->encr == NULL || settings->key_hex == NULL)
1210 os_memset(&cred, 0, sizeof(cred));
1211 len = os_strlen(settings->ssid_hex);
1212 if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1213 hexstr2bin(settings->ssid_hex, cred.ssid, len / 2))
1215 cred.ssid_len = len / 2;
1217 len = os_strlen(settings->key_hex);
1218 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1219 hexstr2bin(settings->key_hex, cred.key, len / 2))
1221 cred.key_len = len / 2;
1223 if (os_strcmp(settings->auth, "OPEN") == 0)
1224 cred.auth_type = WPS_AUTH_OPEN;
1225 else if (os_strcmp(settings->auth, "WPAPSK") == 0)
1226 cred.auth_type = WPS_AUTH_WPAPSK;
1227 else if (os_strcmp(settings->auth, "WPA2PSK") == 0)
1228 cred.auth_type = WPS_AUTH_WPA2PSK;
1232 if (os_strcmp(settings->encr, "NONE") == 0)
1233 cred.encr_type = WPS_ENCR_NONE;
1234 else if (os_strcmp(settings->encr, "WEP") == 0)
1235 cred.encr_type = WPS_ENCR_WEP;
1236 else if (os_strcmp(settings->encr, "TKIP") == 0)
1237 cred.encr_type = WPS_ENCR_TKIP;
1238 else if (os_strcmp(settings->encr, "CCMP") == 0)
1239 cred.encr_type = WPS_ENCR_AES;
1243 return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin,
1244 os_strlen(pin), &cred);
1248 static void wpas_wps_terminate_cb(void *ctx)
1250 wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
1253 #endif /* CONFIG_WPS_ER */
1256 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
1258 #ifdef CONFIG_WPS_ER
1259 if (wpa_s->wps_er) {
1260 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
1261 wpa_s->wps_er = NULL;
1264 #endif /* CONFIG_WPS_ER */