2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008, 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.
18 #include "ieee802_11_defs.h"
19 #include "ieee802_11_common.h"
20 #include "wpa_common.h"
22 #include "eap_peer/eap.h"
23 #include "wpa_supplicant_i.h"
29 #include "eap_common/eap_wsc_common.h"
30 #include "blacklist.h"
32 #include "wps_supplicant.h"
33 #include "dh_group5.h"
35 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
37 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
38 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
41 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
43 if (!wpa_s->wps_success &&
44 wpa_s->current_ssid &&
45 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
46 const u8 *bssid = wpa_s->bssid;
47 if (is_zero_ether_addr(bssid))
48 bssid = wpa_s->pending_bssid;
50 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
51 " did not succeed - continue trying to find "
52 "suitable AP", MAC2STR(bssid));
53 wpa_blacklist_add(wpa_s, bssid);
55 wpa_supplicant_deauthenticate(wpa_s,
56 WLAN_REASON_DEAUTH_LEAVING);
57 wpa_s->reassociate = 1;
58 wpa_supplicant_req_scan(wpa_s,
59 wpa_s->blacklist_cleared ? 5 : 0, 0);
60 wpa_s->blacklist_cleared = 0;
64 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
66 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
67 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
68 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
69 "try to associate with the received credential");
70 wpa_supplicant_deauthenticate(wpa_s,
71 WLAN_REASON_DEAUTH_LEAVING);
72 wpa_s->reassociate = 1;
73 wpa_supplicant_req_scan(wpa_s, 0, 0);
77 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
78 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
79 "for external credential processing");
80 wpas_clear_wps(wpa_s);
81 wpa_supplicant_deauthenticate(wpa_s,
82 WLAN_REASON_DEAUTH_LEAVING);
90 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
91 struct wpa_ssid *ssid,
92 const struct wps_credential *cred)
94 struct wpa_driver_capa capa;
96 struct wpa_scan_res *bss;
98 struct wpa_ie_data adv;
99 int wpa2 = 0, ccmp = 0;
102 * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
103 * case they are configured for mixed mode operation (WPA+WPA2 and
104 * TKIP+CCMP). Try to use scan results to figure out whether the AP
105 * actually supports stronger security and select that if the client
106 * has support for it, too.
109 if (wpa_drv_get_capa(wpa_s, &capa))
110 return; /* Unknown what driver supports */
112 if (wpa_supplicant_get_scan_results(wpa_s) || wpa_s->scan_res == NULL)
113 return; /* Could not get scan results for checking advertised
116 for (i = 0; i < wpa_s->scan_res->num; i++) {
117 bss = wpa_s->scan_res->res[i];
118 if (os_memcmp(bss->bssid, cred->mac_addr, ETH_ALEN) != 0)
120 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
123 if (ie[1] != ssid->ssid_len || ssid->ssid == NULL ||
124 os_memcmp(ie + 2, ssid->ssid, ssid->ssid_len) != 0)
127 wpa_printf(MSG_DEBUG, "WPS: AP found from scan results");
131 if (i == wpa_s->scan_res->num) {
132 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from scan "
133 "results - use credential as-is");
137 ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
138 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
140 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
143 ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
144 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
145 adv.pairwise_cipher & WPA_CIPHER_CCMP)
149 if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
150 (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
152 * TODO: This could be the initial AP configuration and the
153 * Beacon contents could change shortly. Should request a new
154 * scan and delay addition of the network until the updated
155 * scan results are available.
157 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
158 "support - use credential as-is");
162 if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
163 (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
164 (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
165 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
166 "based on scan results");
167 if (wpa_s->conf->ap_scan == 1)
168 ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
170 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
173 if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
174 (ssid->proto & WPA_PROTO_WPA) &&
175 (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
176 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
177 "based on scan results");
178 if (wpa_s->conf->ap_scan == 1)
179 ssid->proto |= WPA_PROTO_RSN;
181 ssid->proto = WPA_PROTO_RSN;
186 static int wpa_supplicant_wps_cred(void *ctx,
187 const struct wps_credential *cred)
189 struct wpa_supplicant *wpa_s = ctx;
190 struct wpa_ssid *ssid = wpa_s->current_ssid;
194 if ((wpa_s->conf->wps_cred_processing == 1 ||
195 wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
196 size_t blen = cred->cred_attr_len * 2 + 1;
197 char *buf = os_malloc(blen);
199 wpa_snprintf_hex(buf, blen,
200 cred->cred_attr, cred->cred_attr_len);
201 wpa_msg(wpa_s, MSG_INFO, "%s%s",
202 WPS_EVENT_CRED_RECEIVED, buf);
206 wpas_notify_wps_credential(wpa_s, cred);
208 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
210 wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
211 cred->cred_attr, cred->cred_attr_len);
213 if (wpa_s->conf->wps_cred_processing == 1)
216 wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
217 wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
219 wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
220 wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
221 wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
222 cred->key, cred->key_len);
223 wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
224 MAC2STR(cred->mac_addr));
226 auth_type = cred->auth_type;
227 if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
228 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
229 "auth_type into WPA2PSK");
230 auth_type = WPS_AUTH_WPA2PSK;
233 if (auth_type != WPS_AUTH_OPEN &&
234 auth_type != WPS_AUTH_SHARED &&
235 auth_type != WPS_AUTH_WPAPSK &&
236 auth_type != WPS_AUTH_WPA2PSK) {
237 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
238 "unsupported authentication type 0x%x",
243 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
244 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
245 "on the received credential");
246 os_free(ssid->eap.identity);
247 ssid->eap.identity = NULL;
248 ssid->eap.identity_len = 0;
249 os_free(ssid->eap.phase1);
250 ssid->eap.phase1 = NULL;
251 os_free(ssid->eap.eap_methods);
252 ssid->eap.eap_methods = NULL;
254 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
255 "received credential");
256 ssid = wpa_config_add_network(wpa_s->conf);
259 wpas_notify_network_added(wpa_s, ssid);
262 wpa_config_set_network_defaults(ssid);
265 ssid->ssid = os_malloc(cred->ssid_len);
267 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
268 ssid->ssid_len = cred->ssid_len;
271 switch (cred->encr_type) {
275 if (cred->key_len <= 0)
277 if (cred->key_len != 5 && cred->key_len != 13 &&
278 cred->key_len != 10 && cred->key_len != 26) {
279 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
280 "%lu", (unsigned long) cred->key_len);
283 if (cred->key_idx > NUM_WEP_KEYS) {
284 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
289 key_idx = cred->key_idx - 1;
290 if (cred->key_len == 10 || cred->key_len == 26) {
291 if (hexstr2bin((char *) cred->key,
292 ssid->wep_key[key_idx],
293 cred->key_len / 2) < 0) {
294 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
298 ssid->wep_key_len[key_idx] = cred->key_len / 2;
300 os_memcpy(ssid->wep_key[key_idx], cred->key,
302 ssid->wep_key_len[key_idx] = cred->key_len;
304 ssid->wep_tx_keyidx = key_idx;
307 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
310 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
316 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
317 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
320 case WPS_AUTH_SHARED:
321 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
322 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
325 case WPS_AUTH_WPAPSK:
326 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
327 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
328 ssid->proto = WPA_PROTO_WPA;
331 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
332 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
333 ssid->proto = WPA_PROTO_WPA;
336 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
337 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
338 ssid->proto = WPA_PROTO_RSN;
340 case WPS_AUTH_WPA2PSK:
341 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
342 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
343 ssid->proto = WPA_PROTO_RSN;
347 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
348 if (cred->key_len == 2 * PMK_LEN) {
349 if (hexstr2bin((const char *) cred->key, ssid->psk,
351 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
356 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
357 os_free(ssid->passphrase);
358 ssid->passphrase = os_malloc(cred->key_len + 1);
359 if (ssid->passphrase == NULL)
361 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
362 ssid->passphrase[cred->key_len] = '\0';
363 wpa_config_update_psk(ssid);
365 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
367 (unsigned long) cred->key_len);
372 wpas_wps_security_workaround(wpa_s, ssid, cred);
374 #ifndef CONFIG_NO_CONFIG_WRITE
375 if (wpa_s->conf->update_config &&
376 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
377 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
380 #endif /* CONFIG_NO_CONFIG_WRITE */
386 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
387 struct wps_event_m2d *m2d)
389 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
390 "dev_password_id=%d config_error=%d",
391 m2d->dev_password_id, m2d->config_error);
392 wpas_notify_wps_event_m2d(wpa_s, m2d);
396 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
397 struct wps_event_fail *fail)
399 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
400 wpas_clear_wps(wpa_s);
401 wpas_notify_wps_event_fail(wpa_s, fail);
405 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
407 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
408 wpa_s->wps_success = 1;
409 wpas_notify_wps_event_success(wpa_s);
413 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
414 union wps_event_data *data)
416 struct wpa_supplicant *wpa_s = ctx;
419 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
422 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
425 wpa_supplicant_wps_event_success(wpa_s);
427 case WPS_EV_PWD_AUTH_FAIL:
429 case WPS_EV_PBC_OVERLAP:
431 case WPS_EV_PBC_TIMEOUT:
437 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
439 if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
440 eap_is_wps_pin_enrollee(&ssid->eap))
441 return WPS_REQ_ENROLLEE;
443 return WPS_REQ_REGISTRAR;
447 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
450 struct wpa_ssid *ssid, *remove_ssid = NULL;
452 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
454 /* Remove any existing WPS network from configuration */
455 ssid = wpa_s->conf->ssid;
457 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
458 if (ssid == wpa_s->current_ssid) {
459 wpa_s->current_ssid = NULL;
461 wpas_notify_network_changed(wpa_s);
469 wpas_notify_network_removed(wpa_s, remove_ssid);
470 wpa_config_remove_network(wpa_s->conf, id);
476 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
478 struct wpa_supplicant *wpa_s = eloop_ctx;
479 wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
481 wpas_clear_wps(wpa_s);
485 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
486 int registrar, const u8 *bssid)
488 struct wpa_ssid *ssid;
490 ssid = wpa_config_add_network(wpa_s->conf);
493 wpas_notify_network_added(wpa_s, ssid);
494 wpa_config_set_network_defaults(ssid);
495 if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
496 wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
497 wpa_config_set(ssid, "identity", registrar ?
498 "\"" WSC_ID_REGISTRAR "\"" :
499 "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
500 wpas_notify_network_removed(wpa_s, ssid);
501 wpa_config_remove_network(wpa_s->conf, ssid->id);
507 struct wpa_scan_res *res;
509 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
512 /* Try to get SSID from scan results */
513 if (wpa_s->scan_res == NULL &&
514 wpa_supplicant_get_scan_results(wpa_s) < 0)
515 return ssid; /* Could not find any scan results */
517 for (i = 0; i < wpa_s->scan_res->num; i++) {
520 res = wpa_s->scan_res->res[i];
521 if (os_memcmp(bssid, res->bssid, ETH_ALEN) != 0)
524 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
528 ssid->ssid = os_malloc(ie[1]);
529 if (ssid->ssid == NULL)
531 os_memcpy(ssid->ssid, ie + 2, ie[1]);
532 ssid->ssid_len = ie[1];
541 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
542 struct wpa_ssid *selected)
544 struct wpa_ssid *ssid;
546 /* Mark all other networks disabled and trigger reassociation */
547 ssid = wpa_s->conf->ssid;
549 int was_disabled = ssid->disabled;
550 ssid->disabled = ssid != selected;
551 if (was_disabled != ssid->disabled)
552 wpas_notify_network_enabled_changed(wpa_s, ssid);
555 wpa_s->disconnected = 0;
556 wpa_s->reassociate = 1;
557 wpa_s->scan_runs = 0;
558 wpa_s->wps_success = 0;
559 wpa_s->blacklist_cleared = 0;
560 wpa_supplicant_req_scan(wpa_s, 0, 0);
564 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
566 struct wpa_ssid *ssid;
567 wpas_clear_wps(wpa_s);
568 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
571 wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
572 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
574 wpas_wps_reassoc(wpa_s, ssid);
579 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
582 struct wpa_ssid *ssid;
584 unsigned int rpin = 0;
586 wpas_clear_wps(wpa_s);
587 ssid = wpas_wps_add_network(wpa_s, 0, bssid);
591 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
593 rpin = wps_generate_pin();
594 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
596 wpa_config_set(ssid, "phase1", val, 0);
597 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
599 wpas_wps_reassoc(wpa_s, ssid);
604 #ifdef CONFIG_WPS_OOB
605 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
606 char *path, char *method, char *name)
608 struct wps_context *wps = wpa_s->wps;
609 struct oob_device_data *oob_dev;
611 oob_dev = wps_get_oob_device(device_type);
614 oob_dev->device_path = path;
615 oob_dev->device_name = name;
616 wps->oob_conf.oob_method = wps_get_oob_method(method);
618 if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
620 * Use pre-configured DH keys in order to be able to write the
621 * key hash into the OOB file.
623 wpabuf_free(wps->dh_pubkey);
624 wpabuf_free(wps->dh_privkey);
625 wps->dh_privkey = NULL;
626 wps->dh_pubkey = NULL;
627 dh5_free(wps->dh_ctx);
628 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
629 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
630 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
631 wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
632 "Diffie-Hellman handshake");
637 if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
638 wpas_clear_wps(wpa_s);
640 if (wps_process_oob(wps, oob_dev, 0) < 0)
643 if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
644 wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
645 wpas_wps_start_pin(wpa_s, NULL,
646 wpabuf_head(wps->oob_conf.dev_password)) < 0)
651 #endif /* CONFIG_WPS_OOB */
654 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
655 const char *pin, struct wps_new_ap_settings *settings)
657 struct wpa_ssid *ssid;
664 wpas_clear_wps(wpa_s);
665 ssid = wpas_wps_add_network(wpa_s, 1, bssid);
669 end = pos + sizeof(val);
670 res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
671 if (res < 0 || res >= end - pos)
675 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
676 "new_encr=%s new_key=%s",
677 settings->ssid_hex, settings->auth,
678 settings->encr, settings->key_hex);
679 if (res < 0 || res >= end - pos)
683 res = os_snprintf(pos, end - pos, "\"");
684 if (res < 0 || res >= end - pos)
686 wpa_config_set(ssid, "phase1", val, 0);
687 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
689 wpas_wps_reassoc(wpa_s, ssid);
694 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
697 wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
698 "STA " MACSTR, MAC2STR(mac_addr));
699 wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
707 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
708 const struct wps_device_data *dev)
710 char uuid[40], txt[400];
712 if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
714 wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
715 len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
716 " [%s|%s|%s|%s|%s|%d-%08X-%d]",
717 uuid, MAC2STR(dev->mac_addr), dev->device_name,
718 dev->manufacturer, dev->model_name,
719 dev->model_number, dev->serial_number,
720 dev->categ, dev->oui, dev->sub_categ);
721 if (len > 0 && len < (int) sizeof(txt))
722 wpa_printf(MSG_INFO, "%s", txt);
726 int wpas_wps_init(struct wpa_supplicant *wpa_s)
728 struct wps_context *wps;
729 struct wps_registrar_config rcfg;
731 wps = os_zalloc(sizeof(*wps));
735 wps->cred_cb = wpa_supplicant_wps_cred;
736 wps->event_cb = wpa_supplicant_wps_event;
739 wps->dev.device_name = wpa_s->conf->device_name;
740 wps->dev.manufacturer = wpa_s->conf->manufacturer;
741 wps->dev.model_name = wpa_s->conf->model_name;
742 wps->dev.model_number = wpa_s->conf->model_number;
743 wps->dev.serial_number = wpa_s->conf->serial_number;
744 if (wpa_s->conf->device_type) {
747 /* <categ>-<OUI>-<subcateg> */
748 wps->dev.categ = atoi(wpa_s->conf->device_type);
749 pos = os_strchr(wpa_s->conf->device_type, '-');
751 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
756 if (hexstr2bin(pos, oui, 4)) {
757 wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
761 wps->dev.oui = WPA_GET_BE32(oui);
762 pos = os_strchr(pos, '-');
764 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
769 wps->dev.sub_categ = atoi(pos);
771 wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
772 wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
773 os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
774 if (is_nil_uuid(wpa_s->conf->uuid)) {
775 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
776 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
777 wps->uuid, WPS_UUID_LEN);
779 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
781 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
782 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
784 os_memset(&rcfg, 0, sizeof(rcfg));
785 rcfg.new_psk_cb = wpas_wps_new_psk_cb;
786 rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
789 wps->registrar = wps_registrar_init(wps, &rcfg);
790 if (wps->registrar == NULL) {
791 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
802 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
804 eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
806 if (wpa_s->wps == NULL)
809 wps_registrar_deinit(wpa_s->wps->registrar);
810 wpabuf_free(wpa_s->wps->dh_pubkey);
811 wpabuf_free(wpa_s->wps->dh_privkey);
812 wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
813 wpabuf_free(wpa_s->wps->oob_conf.dev_password);
814 os_free(wpa_s->wps->network_key);
818 wps_er_deinit(wpa_s->wps_er);
819 wpa_s->wps_er = NULL;
823 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
824 struct wpa_ssid *ssid, struct wpa_scan_res *bss)
826 struct wpabuf *wps_ie;
828 if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
831 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
832 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
834 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
838 if (!wps_is_selected_pbc_registrar(wps_ie)) {
839 wpa_printf(MSG_DEBUG, " skip - WPS AP "
840 "without active PBC Registrar");
845 /* TODO: overlap detection */
846 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
852 if (eap_is_wps_pin_enrollee(&ssid->eap)) {
854 wpa_printf(MSG_DEBUG, " skip - non-WPS AP");
859 * Start with WPS APs that advertise active PIN Registrar and
860 * allow any WPS AP after third scan since some APs do not set
861 * Selected Registrar attribute properly when using external
864 if (!wps_is_selected_pin_registrar(wps_ie)) {
865 if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
866 wpa_printf(MSG_DEBUG, " skip - WPS AP "
867 "without active PIN Registrar");
871 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
873 wpa_printf(MSG_DEBUG, " selected based on WPS IE "
881 wpa_printf(MSG_DEBUG, " selected based on WPS IE");
890 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
891 struct wpa_ssid *ssid,
892 struct wpa_scan_res *bss)
894 struct wpabuf *wps_ie = NULL;
897 if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
898 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
899 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
900 /* allow wildcard SSID for WPS PBC */
903 } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
904 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
906 (wps_is_selected_pin_registrar(wps_ie) ||
907 wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
908 /* allow wildcard SSID for WPS PIN */
913 if (!ret && ssid->bssid_set &&
914 os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
915 /* allow wildcard SSID due to hardcoded BSSID match */
925 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
926 struct wpa_scan_res *selected,
927 struct wpa_ssid *ssid)
929 const u8 *sel_uuid, *uuid;
931 struct wpabuf *wps_ie;
934 if (!eap_is_wps_pbc_enrollee(&ssid->eap))
937 /* Make sure that only one AP is in active PBC mode */
938 wps_ie = wpa_scan_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
940 sel_uuid = wps_get_uuid_e(wps_ie);
944 for (i = 0; i < wpa_s->scan_res->num; i++) {
945 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
949 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
952 if (!wps_is_selected_pbc_registrar(ie)) {
956 uuid = wps_get_uuid_e(ie);
957 if (sel_uuid == NULL || uuid == NULL ||
958 os_memcmp(sel_uuid, uuid, 16) != 0) {
959 ret = 1; /* PBC overlap */
964 /* TODO: verify that this is reasonable dual-band situation */
975 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
979 if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
982 for (i = 0; i < wpa_s->scan_res->num; i++) {
983 struct wpa_scan_res *bss = wpa_s->scan_res->res[i];
985 ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
988 if (wps_is_selected_pbc_registrar(ie))
989 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC);
990 else if (wps_is_selected_pin_registrar(ie))
991 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN);
993 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE);
1000 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
1002 struct wpa_ssid *ssid;
1004 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1005 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
1013 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
1016 struct wpabuf *wps_ie;
1019 wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
1023 ret = wps_attr_text(wps_ie, buf, end);
1024 wpabuf_free(wps_ie);
1029 int wpas_wps_er_start(struct wpa_supplicant *wpa_s)
1031 #ifdef CONFIG_WPS_ER
1032 if (wpa_s->wps_er) {
1033 /* TODO: re-send ctrl_iface events for current data? */
1036 wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname);
1037 if (wpa_s->wps_er == NULL)
1040 #else /* CONFIG_WPS_ER */
1042 #endif /* CONFIG_WPS_ER */
1046 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
1048 #ifdef CONFIG_WPS_ER
1049 wps_er_deinit(wpa_s->wps_er);
1050 wpa_s->wps_er = NULL;
1051 #endif /* CONFIG_WPS_ER */