2 * Wi-Fi Protected Setup - Registrar
3 * Copyright (c) 2008-2009, 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 "ieee802_11_defs.h"
23 #include "wps_dev_attr.h"
28 #define WPS_WORKAROUNDS
31 struct wps_uuid_pin *next;
32 u8 uuid[WPS_UUID_LEN];
36 #define PIN_LOCKED BIT(0)
37 #define PIN_EXPIRES BIT(1)
39 struct os_time expiration;
43 static void wps_free_pin(struct wps_uuid_pin *pin)
50 static void wps_free_pins(struct wps_uuid_pin *pins)
52 struct wps_uuid_pin *pin, *prev;
63 struct wps_pbc_session {
64 struct wps_pbc_session *next;
66 u8 uuid_e[WPS_UUID_LEN];
67 struct os_time timestamp;
71 static void wps_free_pbc_sessions(struct wps_pbc_session *pbc)
73 struct wps_pbc_session *prev;
83 struct wps_registrar_device {
84 struct wps_registrar_device *next;
85 struct wps_device_data dev;
86 u8 uuid[WPS_UUID_LEN];
90 struct wps_registrar {
91 struct wps_context *wps;
94 int selected_registrar;
96 int (*new_psk_cb)(void *ctx, const u8 *mac_addr, const u8 *psk,
98 int (*set_ie_cb)(void *ctx, const u8 *beacon_ie, size_t beacon_ie_len,
99 const u8 *probe_resp_ie, size_t probe_resp_ie_len);
100 void (*pin_needed_cb)(void *ctx, const u8 *uuid_e,
101 const struct wps_device_data *dev);
102 void (*reg_success_cb)(void *ctx, const u8 *mac_addr,
104 void (*set_sel_reg_cb)(void *ctx, int sel_reg, u16 dev_passwd_id,
105 u16 sel_reg_config_methods);
108 struct wps_uuid_pin *pins;
109 struct wps_pbc_session *pbc_sessions;
112 struct wpabuf *extra_cred;
113 int disable_auto_conf;
114 int sel_reg_dev_password_id_override;
115 int sel_reg_config_methods_override;
118 struct wps_registrar_device *devices;
120 int force_pbc_overlap;
124 static int wps_set_ie(struct wps_registrar *reg);
125 static void wps_cb_set_sel_reg(struct wps_registrar *reg);
126 static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx);
127 static void wps_registrar_set_selected_timeout(void *eloop_ctx,
131 static void wps_free_devices(struct wps_registrar_device *dev)
133 struct wps_registrar_device *prev;
138 wps_device_data_free(&prev->dev);
144 static struct wps_registrar_device * wps_device_get(struct wps_registrar *reg,
147 struct wps_registrar_device *dev;
149 for (dev = reg->devices; dev; dev = dev->next) {
150 if (os_memcmp(dev->dev.mac_addr, addr, ETH_ALEN) == 0)
157 static void wps_device_clone_data(struct wps_device_data *dst,
158 struct wps_device_data *src)
160 os_memcpy(dst->mac_addr, src->mac_addr, ETH_ALEN);
161 dst->categ = src->categ;
163 dst->sub_categ = src->sub_categ;
165 #define WPS_STRDUP(n) \
167 dst->n = src->n ? os_strdup(src->n) : NULL
169 WPS_STRDUP(device_name);
170 WPS_STRDUP(manufacturer);
171 WPS_STRDUP(model_name);
172 WPS_STRDUP(model_number);
173 WPS_STRDUP(serial_number);
178 int wps_device_store(struct wps_registrar *reg,
179 struct wps_device_data *dev, const u8 *uuid)
181 struct wps_registrar_device *d;
183 d = wps_device_get(reg, dev->mac_addr);
185 d = os_zalloc(sizeof(*d));
188 d->next = reg->devices;
192 wps_device_clone_data(&d->dev, dev);
193 os_memcpy(d->uuid, uuid, WPS_UUID_LEN);
199 static void wps_registrar_add_pbc_session(struct wps_registrar *reg,
200 const u8 *addr, const u8 *uuid_e)
202 struct wps_pbc_session *pbc, *prev = NULL;
207 pbc = reg->pbc_sessions;
209 if (os_memcmp(pbc->addr, addr, ETH_ALEN) == 0 &&
210 os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0) {
212 prev->next = pbc->next;
214 reg->pbc_sessions = pbc->next;
222 pbc = os_zalloc(sizeof(*pbc));
225 os_memcpy(pbc->addr, addr, ETH_ALEN);
227 os_memcpy(pbc->uuid_e, uuid_e, WPS_UUID_LEN);
230 pbc->next = reg->pbc_sessions;
231 reg->pbc_sessions = pbc;
232 pbc->timestamp = now;
234 /* remove entries that have timed out */
239 if (now.sec > pbc->timestamp.sec + WPS_PBC_WALK_TIME) {
241 wps_free_pbc_sessions(pbc);
250 static void wps_registrar_remove_pbc_session(struct wps_registrar *reg,
251 const u8 *addr, const u8 *uuid_e)
253 struct wps_pbc_session *pbc, *prev = NULL;
255 pbc = reg->pbc_sessions;
257 if (os_memcmp(pbc->addr, addr, ETH_ALEN) == 0 &&
258 os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0) {
260 prev->next = pbc->next;
262 reg->pbc_sessions = pbc->next;
272 static int wps_registrar_pbc_overlap(struct wps_registrar *reg,
273 const u8 *addr, const u8 *uuid_e)
276 struct wps_pbc_session *pbc;
281 for (pbc = reg->pbc_sessions; pbc; pbc = pbc->next) {
282 if (now.sec > pbc->timestamp.sec + WPS_PBC_WALK_TIME)
284 if (addr == NULL || os_memcmp(addr, pbc->addr, ETH_ALEN) ||
286 os_memcmp(uuid_e, pbc->uuid_e, WPS_UUID_LEN))
293 return count > 1 ? 1 : 0;
297 static int wps_build_wps_state(struct wps_context *wps, struct wpabuf *msg)
299 wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)",
301 wpabuf_put_be16(msg, ATTR_WPS_STATE);
302 wpabuf_put_be16(msg, 1);
303 wpabuf_put_u8(msg, wps->wps_state);
308 #ifdef CONFIG_WPS_UPNP
309 static void wps_registrar_free_pending_m2(struct wps_context *wps)
311 struct upnp_pending_message *p, *p2, *prev = NULL;
314 if (p->type == WPS_M2 || p->type == WPS_M2D) {
316 wps->upnp_msgs = p->next;
318 prev->next = p->next;
319 wpa_printf(MSG_DEBUG, "WPS UPnP: Drop pending M2/M2D");
322 wpabuf_free(p2->msg);
330 #endif /* CONFIG_WPS_UPNP */
333 static int wps_build_ap_setup_locked(struct wps_context *wps,
336 if (wps->ap_setup_locked) {
337 wpa_printf(MSG_DEBUG, "WPS: * AP Setup Locked");
338 wpabuf_put_be16(msg, ATTR_AP_SETUP_LOCKED);
339 wpabuf_put_be16(msg, 1);
340 wpabuf_put_u8(msg, 1);
346 static int wps_build_selected_registrar(struct wps_registrar *reg,
349 if (!reg->selected_registrar)
351 wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar");
352 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
353 wpabuf_put_be16(msg, 1);
354 wpabuf_put_u8(msg, 1);
359 static int wps_build_sel_reg_dev_password_id(struct wps_registrar *reg,
362 u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
363 if (!reg->selected_registrar)
365 if (reg->sel_reg_dev_password_id_override >= 0)
366 id = reg->sel_reg_dev_password_id_override;
367 wpa_printf(MSG_DEBUG, "WPS: * Device Password ID (%d)", id);
368 wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
369 wpabuf_put_be16(msg, 2);
370 wpabuf_put_be16(msg, id);
375 static int wps_build_sel_reg_config_methods(struct wps_registrar *reg,
379 if (!reg->selected_registrar)
381 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
383 methods |= WPS_CONFIG_PUSHBUTTON;
384 if (reg->sel_reg_config_methods_override >= 0)
385 methods = reg->sel_reg_config_methods_override;
386 wpa_printf(MSG_DEBUG, "WPS: * Selected Registrar Config Methods (%x)",
388 wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
389 wpabuf_put_be16(msg, 2);
390 wpabuf_put_be16(msg, methods);
395 static int wps_build_probe_config_methods(struct wps_registrar *reg,
400 wpa_printf(MSG_DEBUG, "WPS: * Config Methods (%x)", methods);
401 wpabuf_put_be16(msg, ATTR_CONFIG_METHODS);
402 wpabuf_put_be16(msg, 2);
403 wpabuf_put_be16(msg, methods);
408 static int wps_build_config_methods_r(struct wps_registrar *reg,
412 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
414 methods |= WPS_CONFIG_PUSHBUTTON;
415 return wps_build_config_methods(msg, methods);
419 static int wps_build_resp_type(struct wps_registrar *reg, struct wpabuf *msg)
421 u8 resp = reg->wps->ap ? WPS_RESP_AP : WPS_RESP_REGISTRAR;
422 wpa_printf(MSG_DEBUG, "WPS: * Response Type (%d)", resp);
423 wpabuf_put_be16(msg, ATTR_RESPONSE_TYPE);
424 wpabuf_put_be16(msg, 1);
425 wpabuf_put_u8(msg, resp);
431 * wps_registrar_init - Initialize WPS Registrar data
432 * @wps: Pointer to longterm WPS context
433 * @cfg: Registrar configuration
434 * Returns: Pointer to allocated Registrar data or %NULL on failure
436 * This function is used to initialize WPS Registrar functionality. It can be
437 * used for a single Registrar run (e.g., when run in a supplicant) or multiple
438 * runs (e.g., when run as an internal Registrar in an AP). Caller is
439 * responsible for freeing the returned data with wps_registrar_deinit() when
440 * Registrar functionality is not needed anymore.
442 struct wps_registrar *
443 wps_registrar_init(struct wps_context *wps,
444 const struct wps_registrar_config *cfg)
446 struct wps_registrar *reg = os_zalloc(sizeof(*reg));
451 reg->new_psk_cb = cfg->new_psk_cb;
452 reg->set_ie_cb = cfg->set_ie_cb;
453 reg->pin_needed_cb = cfg->pin_needed_cb;
454 reg->reg_success_cb = cfg->reg_success_cb;
455 reg->set_sel_reg_cb = cfg->set_sel_reg_cb;
456 reg->cb_ctx = cfg->cb_ctx;
457 reg->skip_cred_build = cfg->skip_cred_build;
458 if (cfg->extra_cred) {
459 reg->extra_cred = wpabuf_alloc_copy(cfg->extra_cred,
460 cfg->extra_cred_len);
461 if (reg->extra_cred == NULL) {
466 reg->disable_auto_conf = cfg->disable_auto_conf;
467 reg->sel_reg_dev_password_id_override = -1;
468 reg->sel_reg_config_methods_override = -1;
469 reg->static_wep_only = cfg->static_wep_only;
471 if (wps_set_ie(reg)) {
472 wps_registrar_deinit(reg);
481 * wps_registrar_deinit - Deinitialize WPS Registrar data
482 * @reg: Registrar data from wps_registrar_init()
484 void wps_registrar_deinit(struct wps_registrar *reg)
488 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
489 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
490 wps_free_pins(reg->pins);
491 wps_free_pbc_sessions(reg->pbc_sessions);
492 wpabuf_free(reg->extra_cred);
493 wps_free_devices(reg->devices);
499 * wps_registrar_add_pin - Configure a new PIN for Registrar
500 * @reg: Registrar data from wps_registrar_init()
501 * @uuid: UUID-E or %NULL for wildcard (any UUID)
502 * @pin: PIN (Device Password)
503 * @pin_len: Length of pin in octets
504 * @timeout: Time (in seconds) when the PIN will be invalidated; 0 = no timeout
505 * Returns: 0 on success, -1 on failure
507 int wps_registrar_add_pin(struct wps_registrar *reg, const u8 *uuid,
508 const u8 *pin, size_t pin_len, int timeout)
510 struct wps_uuid_pin *p;
512 p = os_zalloc(sizeof(*p));
516 p->wildcard_uuid = 1;
518 os_memcpy(p->uuid, uuid, WPS_UUID_LEN);
519 p->pin = os_malloc(pin_len);
520 if (p->pin == NULL) {
524 os_memcpy(p->pin, pin, pin_len);
525 p->pin_len = pin_len;
528 p->flags |= PIN_EXPIRES;
529 os_get_time(&p->expiration);
530 p->expiration.sec += timeout;
536 wpa_printf(MSG_DEBUG, "WPS: A new PIN configured (timeout=%d)",
538 wpa_hexdump(MSG_DEBUG, "WPS: UUID", uuid, WPS_UUID_LEN);
539 wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: PIN", pin, pin_len);
540 reg->selected_registrar = 1;
543 wps_cb_set_sel_reg(reg);
544 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
545 eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
546 wps_registrar_set_selected_timeout,
553 static void wps_registrar_expire_pins(struct wps_registrar *reg)
555 struct wps_uuid_pin *pin, *prev, *del;
562 if ((pin->flags & PIN_EXPIRES) &&
563 os_time_before(&pin->expiration, &now)) {
565 reg->pins = pin->next;
567 prev->next = pin->next;
570 wpa_hexdump(MSG_DEBUG, "WPS: Expired PIN for UUID",
571 del->uuid, WPS_UUID_LEN);
582 * wps_registrar_invalidate_pin - Invalidate a PIN for a specific UUID-E
583 * @reg: Registrar data from wps_registrar_init()
585 * Returns: 0 on success, -1 on failure (e.g., PIN not found)
587 int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid)
589 struct wps_uuid_pin *pin, *prev;
594 if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
596 reg->pins = pin->next;
598 prev->next = pin->next;
599 wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
600 pin->uuid, WPS_UUID_LEN);
612 static const u8 * wps_registrar_get_pin(struct wps_registrar *reg,
613 const u8 *uuid, size_t *pin_len)
615 struct wps_uuid_pin *pin;
617 wps_registrar_expire_pins(reg);
621 if (!pin->wildcard_uuid &&
622 os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0)
628 /* Check for wildcard UUIDs since none of the UUID-specific
632 if (pin->wildcard_uuid == 1) {
633 wpa_printf(MSG_DEBUG, "WPS: Found a wildcard "
634 "PIN. Assigned it for this UUID-E");
635 pin->wildcard_uuid = 2;
636 os_memcpy(pin->uuid, uuid, WPS_UUID_LEN);
647 * Lock the PIN to avoid attacks based on concurrent re-use of the PIN
648 * that could otherwise avoid PIN invalidations.
650 if (pin->flags & PIN_LOCKED) {
651 wpa_printf(MSG_DEBUG, "WPS: Selected PIN locked - do not "
652 "allow concurrent re-use");
655 *pin_len = pin->pin_len;
656 pin->flags |= PIN_LOCKED;
662 * wps_registrar_unlock_pin - Unlock a PIN for a specific UUID-E
663 * @reg: Registrar data from wps_registrar_init()
665 * Returns: 0 on success, -1 on failure
667 * PINs are locked to enforce only one concurrent use. This function unlocks a
668 * PIN to allow it to be used again. If the specified PIN was configured using
669 * a wildcard UUID, it will be removed instead of allowing multiple uses.
671 int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid)
673 struct wps_uuid_pin *pin;
677 if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
678 if (pin->wildcard_uuid == 2) {
679 wpa_printf(MSG_DEBUG, "WPS: Invalidating used "
681 return wps_registrar_invalidate_pin(reg, uuid);
683 pin->flags &= ~PIN_LOCKED;
693 static void wps_registrar_stop_pbc(struct wps_registrar *reg)
695 reg->selected_registrar = 0;
698 wps_cb_set_sel_reg(reg);
702 static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx)
704 struct wps_registrar *reg = eloop_ctx;
706 wpa_printf(MSG_DEBUG, "WPS: PBC timed out - disable PBC mode");
707 wps_pbc_timeout_event(reg->wps);
708 wps_registrar_stop_pbc(reg);
713 * wps_registrar_button_pushed - Notify Registrar that AP button was pushed
714 * @reg: Registrar data from wps_registrar_init()
715 * Returns: 0 on success, -1 on failure
717 * This function is called on an AP when a push button is pushed to activate
718 * PBC mode. The PBC mode will be stopped after walk time (2 minutes) timeout
719 * or when a PBC registration is completed.
721 int wps_registrar_button_pushed(struct wps_registrar *reg)
723 if (wps_registrar_pbc_overlap(reg, NULL, NULL)) {
724 wpa_printf(MSG_DEBUG, "WPS: PBC overlap - do not start PBC "
726 wps_pbc_overlap_event(reg->wps);
729 wpa_printf(MSG_DEBUG, "WPS: Button pushed - PBC mode started");
730 reg->force_pbc_overlap = 0;
731 reg->selected_registrar = 1;
734 wps_cb_set_sel_reg(reg);
736 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
737 eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wps_registrar_pbc_timeout,
743 static void wps_registrar_pbc_completed(struct wps_registrar *reg)
745 wpa_printf(MSG_DEBUG, "WPS: PBC completed - stopping PBC mode");
746 eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
747 wps_registrar_stop_pbc(reg);
750 static void wps_registrar_pin_completed(struct wps_registrar *reg)
752 wpa_printf(MSG_DEBUG, "WPS: PIN completed using internal Registrar");
753 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
754 reg->selected_registrar = 0;
756 wps_cb_set_sel_reg(reg);
761 * wps_registrar_probe_req_rx - Notify Registrar of Probe Request
762 * @reg: Registrar data from wps_registrar_init()
763 * @addr: MAC address of the Probe Request sender
764 * @wps_data: WPS IE contents
766 * This function is called on an AP when a Probe Request with WPS IE is
767 * received. This is used to track PBC mode use and to detect possible overlap
768 * situation with other WPS APs.
770 void wps_registrar_probe_req_rx(struct wps_registrar *reg, const u8 *addr,
771 const struct wpabuf *wps_data)
773 struct wps_parse_attr attr;
776 wpa_hexdump_buf(MSG_MSGDUMP,
777 "WPS: Probe Request with WPS data received",
780 if (wps_parse_msg(wps_data, &attr) < 0)
782 if (!wps_version_supported(attr.version)) {
783 wpa_printf(MSG_DEBUG, "WPS: Unsupported ProbeReq WPS IE "
784 "version 0x%x", attr.version ? *attr.version : 0);
788 if (attr.config_methods == NULL) {
789 wpa_printf(MSG_DEBUG, "WPS: No Config Methods attribute in "
794 methods = WPA_GET_BE16(attr.config_methods);
795 if (!(methods & WPS_CONFIG_PUSHBUTTON))
796 return; /* Not PBC */
798 wpa_printf(MSG_DEBUG, "WPS: Probe Request for PBC received from "
799 MACSTR, MAC2STR(addr));
801 wps_registrar_add_pbc_session(reg, addr, attr.uuid_e);
802 if (wps_registrar_pbc_overlap(reg, addr, attr.uuid_e)) {
803 wpa_printf(MSG_DEBUG, "WPS: PBC session overlap detected");
804 reg->force_pbc_overlap = 1;
805 wps_pbc_overlap_event(reg->wps);
810 static int wps_cb_new_psk(struct wps_registrar *reg, const u8 *mac_addr,
811 const u8 *psk, size_t psk_len)
813 if (reg->new_psk_cb == NULL)
816 return reg->new_psk_cb(reg->cb_ctx, mac_addr, psk, psk_len);
820 static void wps_cb_pin_needed(struct wps_registrar *reg, const u8 *uuid_e,
821 const struct wps_device_data *dev)
823 if (reg->pin_needed_cb == NULL)
826 reg->pin_needed_cb(reg->cb_ctx, uuid_e, dev);
830 static void wps_cb_reg_success(struct wps_registrar *reg, const u8 *mac_addr,
833 if (reg->reg_success_cb == NULL)
836 reg->reg_success_cb(reg->cb_ctx, mac_addr, uuid_e);
840 static int wps_cb_set_ie(struct wps_registrar *reg,
841 const struct wpabuf *beacon_ie,
842 const struct wpabuf *probe_resp_ie)
844 if (reg->set_ie_cb == NULL)
847 return reg->set_ie_cb(reg->cb_ctx, wpabuf_head(beacon_ie),
848 wpabuf_len(beacon_ie),
849 wpabuf_head(probe_resp_ie),
850 wpabuf_len(probe_resp_ie));
854 static void wps_cb_set_sel_reg(struct wps_registrar *reg)
857 if (reg->set_sel_reg_cb == NULL)
860 if (reg->selected_registrar) {
861 methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
863 methods |= WPS_CONFIG_PUSHBUTTON;
866 reg->set_sel_reg_cb(reg->cb_ctx, reg->selected_registrar,
867 reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT,
872 /* Encapsulate WPS IE data with one (or more, if needed) IE headers */
873 static struct wpabuf * wps_ie_encapsulate(struct wpabuf *data)
878 ie = wpabuf_alloc(wpabuf_len(data) + 100);
884 pos = wpabuf_head(data);
885 end = pos + wpabuf_len(data);
888 size_t frag_len = end - pos;
891 wpabuf_put_u8(ie, WLAN_EID_VENDOR_SPECIFIC);
892 wpabuf_put_u8(ie, 4 + frag_len);
893 wpabuf_put_be32(ie, WPS_DEV_OUI_WFA);
894 wpabuf_put_data(ie, pos, frag_len);
904 static int wps_set_ie(struct wps_registrar *reg)
906 struct wpabuf *beacon;
907 struct wpabuf *probe;
910 wpa_printf(MSG_DEBUG, "WPS: Build Beacon and Probe Response IEs");
912 beacon = wpabuf_alloc(300);
915 probe = wpabuf_alloc(400);
921 if (wps_build_version(beacon) ||
922 wps_build_wps_state(reg->wps, beacon) ||
923 wps_build_ap_setup_locked(reg->wps, beacon) ||
924 wps_build_selected_registrar(reg, beacon) ||
925 wps_build_sel_reg_dev_password_id(reg, beacon) ||
926 wps_build_sel_reg_config_methods(reg, beacon) ||
927 wps_build_version(probe) ||
928 wps_build_wps_state(reg->wps, probe) ||
929 wps_build_ap_setup_locked(reg->wps, probe) ||
930 wps_build_selected_registrar(reg, probe) ||
931 wps_build_sel_reg_dev_password_id(reg, probe) ||
932 wps_build_sel_reg_config_methods(reg, probe) ||
933 wps_build_resp_type(reg, probe) ||
934 wps_build_uuid_e(probe, reg->wps->uuid) ||
935 wps_build_device_attrs(®->wps->dev, probe) ||
936 wps_build_probe_config_methods(reg, probe) ||
937 wps_build_rf_bands(®->wps->dev, probe)) {
943 beacon = wps_ie_encapsulate(beacon);
944 probe = wps_ie_encapsulate(probe);
946 if (!beacon || !probe) {
952 if (reg->static_wep_only) {
954 * Windows XP and Vista clients can get confused about
955 * EAP-Identity/Request when they probe the network with
956 * EAPOL-Start. In such a case, they may assume the network is
957 * using IEEE 802.1X and prompt user for a certificate while
958 * the correct (non-WPS) behavior would be to ask for the
959 * static WEP key. As a workaround, use Microsoft Provisioning
960 * IE to advertise that legacy 802.1X is not supported.
962 const u8 ms_wps[7] = {
963 WLAN_EID_VENDOR_SPECIFIC, 5,
964 /* Microsoft Provisioning IE (00:50:f2:5) */
966 0x00 /* no legacy 802.1X or MS WPS */
968 wpa_printf(MSG_DEBUG, "WPS: Add Microsoft Provisioning IE "
969 "into Beacon/Probe Response frames");
970 wpabuf_put_data(beacon, ms_wps, sizeof(ms_wps));
971 wpabuf_put_data(probe, ms_wps, sizeof(ms_wps));
974 ret = wps_cb_set_ie(reg, beacon, probe);
982 static int wps_get_dev_password(struct wps_data *wps)
987 os_free(wps->dev_password);
988 wps->dev_password = NULL;
991 wpa_printf(MSG_DEBUG, "WPS: Use default PIN for PBC");
992 pin = (const u8 *) "00000000";
995 pin = wps_registrar_get_pin(wps->wps->registrar, wps->uuid_e,
999 wpa_printf(MSG_DEBUG, "WPS: No Device Password available for "
1001 wps_cb_pin_needed(wps->wps->registrar, wps->uuid_e,
1006 wps->dev_password = os_malloc(pin_len);
1007 if (wps->dev_password == NULL)
1009 os_memcpy(wps->dev_password, pin, pin_len);
1010 wps->dev_password_len = pin_len;
1016 static int wps_build_uuid_r(struct wps_data *wps, struct wpabuf *msg)
1018 wpa_printf(MSG_DEBUG, "WPS: * UUID-R");
1019 wpabuf_put_be16(msg, ATTR_UUID_R);
1020 wpabuf_put_be16(msg, WPS_UUID_LEN);
1021 wpabuf_put_data(msg, wps->uuid_r, WPS_UUID_LEN);
1026 static int wps_build_r_hash(struct wps_data *wps, struct wpabuf *msg)
1032 if (os_get_random(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
1034 wpa_hexdump(MSG_DEBUG, "WPS: R-S1", wps->snonce, WPS_SECRET_NONCE_LEN);
1035 wpa_hexdump(MSG_DEBUG, "WPS: R-S2",
1036 wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN);
1038 if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) {
1039 wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for "
1040 "R-Hash derivation");
1044 wpa_printf(MSG_DEBUG, "WPS: * R-Hash1");
1045 wpabuf_put_be16(msg, ATTR_R_HASH1);
1046 wpabuf_put_be16(msg, SHA256_MAC_LEN);
1047 hash = wpabuf_put(msg, SHA256_MAC_LEN);
1048 /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */
1049 addr[0] = wps->snonce;
1050 len[0] = WPS_SECRET_NONCE_LEN;
1051 addr[1] = wps->psk1;
1052 len[1] = WPS_PSK_LEN;
1053 addr[2] = wpabuf_head(wps->dh_pubkey_e);
1054 len[2] = wpabuf_len(wps->dh_pubkey_e);
1055 addr[3] = wpabuf_head(wps->dh_pubkey_r);
1056 len[3] = wpabuf_len(wps->dh_pubkey_r);
1057 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1058 wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", hash, SHA256_MAC_LEN);
1060 wpa_printf(MSG_DEBUG, "WPS: * R-Hash2");
1061 wpabuf_put_be16(msg, ATTR_R_HASH2);
1062 wpabuf_put_be16(msg, SHA256_MAC_LEN);
1063 hash = wpabuf_put(msg, SHA256_MAC_LEN);
1064 /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */
1065 addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN;
1066 addr[1] = wps->psk2;
1067 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1068 wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", hash, SHA256_MAC_LEN);
1074 static int wps_build_r_snonce1(struct wps_data *wps, struct wpabuf *msg)
1076 wpa_printf(MSG_DEBUG, "WPS: * R-SNonce1");
1077 wpabuf_put_be16(msg, ATTR_R_SNONCE1);
1078 wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1079 wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN);
1084 static int wps_build_r_snonce2(struct wps_data *wps, struct wpabuf *msg)
1086 wpa_printf(MSG_DEBUG, "WPS: * R-SNonce2");
1087 wpabuf_put_be16(msg, ATTR_R_SNONCE2);
1088 wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1089 wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN,
1090 WPS_SECRET_NONCE_LEN);
1095 static int wps_build_cred_network_idx(struct wpabuf *msg,
1096 struct wps_credential *cred)
1098 wpa_printf(MSG_DEBUG, "WPS: * Network Index");
1099 wpabuf_put_be16(msg, ATTR_NETWORK_INDEX);
1100 wpabuf_put_be16(msg, 1);
1101 wpabuf_put_u8(msg, 1);
1106 static int wps_build_cred_ssid(struct wpabuf *msg,
1107 struct wps_credential *cred)
1109 wpa_printf(MSG_DEBUG, "WPS: * SSID");
1110 wpabuf_put_be16(msg, ATTR_SSID);
1111 wpabuf_put_be16(msg, cred->ssid_len);
1112 wpabuf_put_data(msg, cred->ssid, cred->ssid_len);
1117 static int wps_build_cred_auth_type(struct wpabuf *msg,
1118 struct wps_credential *cred)
1120 wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)",
1122 wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
1123 wpabuf_put_be16(msg, 2);
1124 wpabuf_put_be16(msg, cred->auth_type);
1129 static int wps_build_cred_encr_type(struct wpabuf *msg,
1130 struct wps_credential *cred)
1132 wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)",
1134 wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
1135 wpabuf_put_be16(msg, 2);
1136 wpabuf_put_be16(msg, cred->encr_type);
1141 static int wps_build_cred_network_key(struct wpabuf *msg,
1142 struct wps_credential *cred)
1144 wpa_printf(MSG_DEBUG, "WPS: * Network Key");
1145 wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
1146 wpabuf_put_be16(msg, cred->key_len);
1147 wpabuf_put_data(msg, cred->key, cred->key_len);
1152 static int wps_build_cred_mac_addr(struct wpabuf *msg,
1153 struct wps_credential *cred)
1155 wpa_printf(MSG_DEBUG, "WPS: * MAC Address (" MACSTR ")",
1156 MAC2STR(cred->mac_addr));
1157 wpabuf_put_be16(msg, ATTR_MAC_ADDR);
1158 wpabuf_put_be16(msg, ETH_ALEN);
1159 wpabuf_put_data(msg, cred->mac_addr, ETH_ALEN);
1164 static int wps_build_credential(struct wpabuf *msg,
1165 struct wps_credential *cred)
1167 if (wps_build_cred_network_idx(msg, cred) ||
1168 wps_build_cred_ssid(msg, cred) ||
1169 wps_build_cred_auth_type(msg, cred) ||
1170 wps_build_cred_encr_type(msg, cred) ||
1171 wps_build_cred_network_key(msg, cred) ||
1172 wps_build_cred_mac_addr(msg, cred))
1178 int wps_build_cred(struct wps_data *wps, struct wpabuf *msg)
1180 struct wpabuf *cred;
1182 if (wps->wps->registrar->skip_cred_build)
1183 goto skip_cred_build;
1185 wpa_printf(MSG_DEBUG, "WPS: * Credential");
1186 os_memset(&wps->cred, 0, sizeof(wps->cred));
1188 os_memcpy(wps->cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
1189 wps->cred.ssid_len = wps->wps->ssid_len;
1191 /* Select the best authentication and encryption type */
1192 if (wps->auth_type & WPS_AUTH_WPA2PSK)
1193 wps->auth_type = WPS_AUTH_WPA2PSK;
1194 else if (wps->auth_type & WPS_AUTH_WPAPSK)
1195 wps->auth_type = WPS_AUTH_WPAPSK;
1196 else if (wps->auth_type & WPS_AUTH_OPEN)
1197 wps->auth_type = WPS_AUTH_OPEN;
1198 else if (wps->auth_type & WPS_AUTH_SHARED)
1199 wps->auth_type = WPS_AUTH_SHARED;
1201 wpa_printf(MSG_DEBUG, "WPS: Unsupported auth_type 0x%x",
1205 wps->cred.auth_type = wps->auth_type;
1207 if (wps->auth_type == WPS_AUTH_WPA2PSK ||
1208 wps->auth_type == WPS_AUTH_WPAPSK) {
1209 if (wps->encr_type & WPS_ENCR_AES)
1210 wps->encr_type = WPS_ENCR_AES;
1211 else if (wps->encr_type & WPS_ENCR_TKIP)
1212 wps->encr_type = WPS_ENCR_TKIP;
1214 wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1215 "type for WPA/WPA2");
1219 if (wps->encr_type & WPS_ENCR_WEP)
1220 wps->encr_type = WPS_ENCR_WEP;
1221 else if (wps->encr_type & WPS_ENCR_NONE)
1222 wps->encr_type = WPS_ENCR_NONE;
1224 wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1225 "type for non-WPA/WPA2 mode");
1229 wps->cred.encr_type = wps->encr_type;
1230 /* Set MAC address in the Credential to be the AP's address (BSSID) */
1231 os_memcpy(wps->cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN);
1233 if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->wps->ap &&
1234 !wps->wps->registrar->disable_auto_conf) {
1236 /* Generate a random passphrase */
1237 if (os_get_random(r, sizeof(r)) < 0)
1239 os_free(wps->new_psk);
1240 wps->new_psk = base64_encode(r, sizeof(r), &wps->new_psk_len);
1241 if (wps->new_psk == NULL)
1243 wps->new_psk_len--; /* remove newline */
1244 while (wps->new_psk_len &&
1245 wps->new_psk[wps->new_psk_len - 1] == '=')
1247 wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Generated passphrase",
1248 wps->new_psk, wps->new_psk_len);
1249 os_memcpy(wps->cred.key, wps->new_psk, wps->new_psk_len);
1250 wps->cred.key_len = wps->new_psk_len;
1251 } else if (wps->wps->network_key) {
1252 os_memcpy(wps->cred.key, wps->wps->network_key,
1253 wps->wps->network_key_len);
1254 wps->cred.key_len = wps->wps->network_key_len;
1255 } else if (wps->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
1257 /* Generate a random per-device PSK */
1258 os_free(wps->new_psk);
1259 wps->new_psk_len = 32;
1260 wps->new_psk = os_malloc(wps->new_psk_len);
1261 if (wps->new_psk == NULL)
1263 if (os_get_random(wps->new_psk, wps->new_psk_len) < 0) {
1264 os_free(wps->new_psk);
1265 wps->new_psk = NULL;
1268 wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK",
1269 wps->new_psk, wps->new_psk_len);
1270 wpa_snprintf_hex(hex, sizeof(hex), wps->new_psk,
1272 os_memcpy(wps->cred.key, hex, wps->new_psk_len * 2);
1273 wps->cred.key_len = wps->new_psk_len * 2;
1276 cred = wpabuf_alloc(200);
1280 if (wps_build_credential(cred, &wps->cred)) {
1285 wpabuf_put_be16(msg, ATTR_CRED);
1286 wpabuf_put_be16(msg, wpabuf_len(cred));
1287 wpabuf_put_buf(msg, cred);
1291 if (wps->wps->registrar->extra_cred) {
1292 wpa_printf(MSG_DEBUG, "WPS: * Credential (pre-configured)");
1293 wpabuf_put_buf(msg, wps->wps->registrar->extra_cred);
1300 static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *msg)
1302 wpa_printf(MSG_DEBUG, "WPS: * AP Settings");
1304 if (wps_build_credential(msg, &wps->cred))
1311 static struct wpabuf * wps_build_m2(struct wps_data *wps)
1315 if (os_get_random(wps->nonce_r, WPS_NONCE_LEN) < 0)
1317 wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce",
1318 wps->nonce_r, WPS_NONCE_LEN);
1319 wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN);
1321 wpa_printf(MSG_DEBUG, "WPS: Building Message M2");
1322 msg = wpabuf_alloc(1000);
1326 if (wps_build_version(msg) ||
1327 wps_build_msg_type(msg, WPS_M2) ||
1328 wps_build_enrollee_nonce(wps, msg) ||
1329 wps_build_registrar_nonce(wps, msg) ||
1330 wps_build_uuid_r(wps, msg) ||
1331 wps_build_public_key(wps, msg) ||
1332 wps_derive_keys(wps) ||
1333 wps_build_auth_type_flags(wps, msg) ||
1334 wps_build_encr_type_flags(wps, msg) ||
1335 wps_build_conn_type_flags(wps, msg) ||
1336 wps_build_config_methods_r(wps->wps->registrar, msg) ||
1337 wps_build_device_attrs(&wps->wps->dev, msg) ||
1338 wps_build_rf_bands(&wps->wps->dev, msg) ||
1339 wps_build_assoc_state(wps, msg) ||
1340 wps_build_config_error(msg, WPS_CFG_NO_ERROR) ||
1341 wps_build_dev_password_id(msg, wps->dev_pw_id) ||
1342 wps_build_os_version(&wps->wps->dev, msg) ||
1343 wps_build_authenticator(wps, msg)) {
1348 wps->state = RECV_M3;
1353 static struct wpabuf * wps_build_m2d(struct wps_data *wps)
1356 u16 err = wps->config_error;
1358 wpa_printf(MSG_DEBUG, "WPS: Building Message M2D");
1359 msg = wpabuf_alloc(1000);
1363 if (wps->wps->ap && wps->wps->ap_setup_locked &&
1364 err == WPS_CFG_NO_ERROR)
1365 err = WPS_CFG_SETUP_LOCKED;
1367 if (wps_build_version(msg) ||
1368 wps_build_msg_type(msg, WPS_M2D) ||
1369 wps_build_enrollee_nonce(wps, msg) ||
1370 wps_build_registrar_nonce(wps, msg) ||
1371 wps_build_uuid_r(wps, msg) ||
1372 wps_build_auth_type_flags(wps, msg) ||
1373 wps_build_encr_type_flags(wps, msg) ||
1374 wps_build_conn_type_flags(wps, msg) ||
1375 wps_build_config_methods_r(wps->wps->registrar, msg) ||
1376 wps_build_device_attrs(&wps->wps->dev, msg) ||
1377 wps_build_rf_bands(&wps->wps->dev, msg) ||
1378 wps_build_assoc_state(wps, msg) ||
1379 wps_build_config_error(msg, err) ||
1380 wps_build_os_version(&wps->wps->dev, msg)) {
1385 wps->state = RECV_M2D_ACK;
1390 static struct wpabuf * wps_build_m4(struct wps_data *wps)
1392 struct wpabuf *msg, *plain;
1394 wpa_printf(MSG_DEBUG, "WPS: Building Message M4");
1396 wps_derive_psk(wps, wps->dev_password, wps->dev_password_len);
1398 plain = wpabuf_alloc(200);
1402 msg = wpabuf_alloc(1000);
1408 if (wps_build_version(msg) ||
1409 wps_build_msg_type(msg, WPS_M4) ||
1410 wps_build_enrollee_nonce(wps, msg) ||
1411 wps_build_r_hash(wps, msg) ||
1412 wps_build_r_snonce1(wps, plain) ||
1413 wps_build_key_wrap_auth(wps, plain) ||
1414 wps_build_encr_settings(wps, msg, plain) ||
1415 wps_build_authenticator(wps, msg)) {
1422 wps->state = RECV_M5;
1427 static struct wpabuf * wps_build_m6(struct wps_data *wps)
1429 struct wpabuf *msg, *plain;
1431 wpa_printf(MSG_DEBUG, "WPS: Building Message M6");
1433 plain = wpabuf_alloc(200);
1437 msg = wpabuf_alloc(1000);
1443 if (wps_build_version(msg) ||
1444 wps_build_msg_type(msg, WPS_M6) ||
1445 wps_build_enrollee_nonce(wps, msg) ||
1446 wps_build_r_snonce2(wps, plain) ||
1447 wps_build_key_wrap_auth(wps, plain) ||
1448 wps_build_encr_settings(wps, msg, plain) ||
1449 wps_build_authenticator(wps, msg)) {
1456 wps->wps_pin_revealed = 1;
1457 wps->state = RECV_M7;
1462 static struct wpabuf * wps_build_m8(struct wps_data *wps)
1464 struct wpabuf *msg, *plain;
1466 wpa_printf(MSG_DEBUG, "WPS: Building Message M8");
1468 plain = wpabuf_alloc(500);
1472 msg = wpabuf_alloc(1000);
1478 if (wps_build_version(msg) ||
1479 wps_build_msg_type(msg, WPS_M8) ||
1480 wps_build_enrollee_nonce(wps, msg) ||
1481 (wps->wps->ap && wps_build_cred(wps, plain)) ||
1482 (!wps->wps->ap && wps_build_ap_settings(wps, plain)) ||
1483 wps_build_key_wrap_auth(wps, plain) ||
1484 wps_build_encr_settings(wps, msg, plain) ||
1485 wps_build_authenticator(wps, msg)) {
1492 wps->state = RECV_DONE;
1497 static struct wpabuf * wps_build_wsc_ack(struct wps_data *wps)
1501 wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_ACK");
1503 msg = wpabuf_alloc(1000);
1507 if (wps_build_version(msg) ||
1508 wps_build_msg_type(msg, WPS_WSC_ACK) ||
1509 wps_build_enrollee_nonce(wps, msg) ||
1510 wps_build_registrar_nonce(wps, msg)) {
1519 static struct wpabuf * wps_build_wsc_nack(struct wps_data *wps)
1523 wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_NACK");
1525 msg = wpabuf_alloc(1000);
1529 if (wps_build_version(msg) ||
1530 wps_build_msg_type(msg, WPS_WSC_NACK) ||
1531 wps_build_enrollee_nonce(wps, msg) ||
1532 wps_build_registrar_nonce(wps, msg) ||
1533 wps_build_config_error(msg, wps->config_error)) {
1542 struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
1543 enum wsc_op_code *op_code)
1547 #ifdef CONFIG_WPS_UPNP
1548 if (wps->wps->wps_upnp) {
1549 struct upnp_pending_message *p, *prev = NULL;
1550 if (wps->ext_reg > 1)
1551 wps_registrar_free_pending_m2(wps->wps);
1552 p = wps->wps->upnp_msgs;
1553 /* TODO: check pending message MAC address */
1554 while (p && p->next) {
1559 wpa_printf(MSG_DEBUG, "WPS: Use pending message from "
1564 wps->wps->upnp_msgs = NULL;
1568 if (wps->ext_reg == 0)
1574 wpa_printf(MSG_DEBUG, "WPS: Using external Registrar, but no "
1575 "pending message available");
1578 #endif /* CONFIG_WPS_UPNP */
1580 switch (wps->state) {
1582 if (wps_get_dev_password(wps) < 0)
1583 msg = wps_build_m2d(wps);
1585 msg = wps_build_m2(wps);
1589 msg = wps_build_m2d(wps);
1593 msg = wps_build_m4(wps);
1597 msg = wps_build_m6(wps);
1601 msg = wps_build_m8(wps);
1605 msg = wps_build_wsc_ack(wps);
1609 msg = wps_build_wsc_nack(wps);
1610 *op_code = WSC_NACK;
1613 wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building "
1614 "a message", wps->state);
1619 if (*op_code == WSC_MSG && msg) {
1620 /* Save a copy of the last message for Authenticator derivation
1622 wpabuf_free(wps->last_msg);
1623 wps->last_msg = wpabuf_dup(msg);
1630 static int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce)
1632 if (e_nonce == NULL) {
1633 wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received");
1637 os_memcpy(wps->nonce_e, e_nonce, WPS_NONCE_LEN);
1638 wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce",
1639 wps->nonce_e, WPS_NONCE_LEN);
1645 static int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce)
1647 if (r_nonce == NULL) {
1648 wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received");
1652 if (os_memcmp(wps->nonce_r, r_nonce, WPS_NONCE_LEN) != 0) {
1653 wpa_printf(MSG_DEBUG, "WPS: Invalid Registrar Nonce received");
1661 static int wps_process_uuid_e(struct wps_data *wps, const u8 *uuid_e)
1663 if (uuid_e == NULL) {
1664 wpa_printf(MSG_DEBUG, "WPS: No UUID-E received");
1668 os_memcpy(wps->uuid_e, uuid_e, WPS_UUID_LEN);
1669 wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", wps->uuid_e, WPS_UUID_LEN);
1675 static int wps_process_dev_password_id(struct wps_data *wps, const u8 *pw_id)
1677 if (pw_id == NULL) {
1678 wpa_printf(MSG_DEBUG, "WPS: No Device Password ID received");
1682 wps->dev_pw_id = WPA_GET_BE16(pw_id);
1683 wpa_printf(MSG_DEBUG, "WPS: Device Password ID %d", wps->dev_pw_id);
1689 static int wps_process_e_hash1(struct wps_data *wps, const u8 *e_hash1)
1691 if (e_hash1 == NULL) {
1692 wpa_printf(MSG_DEBUG, "WPS: No E-Hash1 received");
1696 os_memcpy(wps->peer_hash1, e_hash1, WPS_HASH_LEN);
1697 wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", wps->peer_hash1, WPS_HASH_LEN);
1703 static int wps_process_e_hash2(struct wps_data *wps, const u8 *e_hash2)
1705 if (e_hash2 == NULL) {
1706 wpa_printf(MSG_DEBUG, "WPS: No E-Hash2 received");
1710 os_memcpy(wps->peer_hash2, e_hash2, WPS_HASH_LEN);
1711 wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", wps->peer_hash2, WPS_HASH_LEN);
1717 static int wps_process_e_snonce1(struct wps_data *wps, const u8 *e_snonce1)
1719 u8 hash[SHA256_MAC_LEN];
1723 if (e_snonce1 == NULL) {
1724 wpa_printf(MSG_DEBUG, "WPS: No E-SNonce1 received");
1728 wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce1", e_snonce1,
1729 WPS_SECRET_NONCE_LEN);
1731 /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */
1732 addr[0] = e_snonce1;
1733 len[0] = WPS_SECRET_NONCE_LEN;
1734 addr[1] = wps->psk1;
1735 len[1] = WPS_PSK_LEN;
1736 addr[2] = wpabuf_head(wps->dh_pubkey_e);
1737 len[2] = wpabuf_len(wps->dh_pubkey_e);
1738 addr[3] = wpabuf_head(wps->dh_pubkey_r);
1739 len[3] = wpabuf_len(wps->dh_pubkey_r);
1740 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1742 if (os_memcmp(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) {
1743 wpa_printf(MSG_DEBUG, "WPS: E-Hash1 derived from E-S1 does "
1744 "not match with the pre-committed value");
1745 wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
1746 wps_pwd_auth_fail_event(wps->wps, 0, 1);
1750 wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the first "
1751 "half of the device password");
1757 static int wps_process_e_snonce2(struct wps_data *wps, const u8 *e_snonce2)
1759 u8 hash[SHA256_MAC_LEN];
1763 if (e_snonce2 == NULL) {
1764 wpa_printf(MSG_DEBUG, "WPS: No E-SNonce2 received");
1768 wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce2", e_snonce2,
1769 WPS_SECRET_NONCE_LEN);
1771 /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */
1772 addr[0] = e_snonce2;
1773 len[0] = WPS_SECRET_NONCE_LEN;
1774 addr[1] = wps->psk2;
1775 len[1] = WPS_PSK_LEN;
1776 addr[2] = wpabuf_head(wps->dh_pubkey_e);
1777 len[2] = wpabuf_len(wps->dh_pubkey_e);
1778 addr[3] = wpabuf_head(wps->dh_pubkey_r);
1779 len[3] = wpabuf_len(wps->dh_pubkey_r);
1780 hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1782 if (os_memcmp(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) {
1783 wpa_printf(MSG_DEBUG, "WPS: E-Hash2 derived from E-S2 does "
1784 "not match with the pre-committed value");
1785 wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
1786 wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
1787 wps_pwd_auth_fail_event(wps->wps, 0, 2);
1791 wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the second "
1792 "half of the device password");
1793 wps->wps_pin_revealed = 0;
1794 wps_registrar_unlock_pin(wps->wps->registrar, wps->uuid_e);
1800 static int wps_process_mac_addr(struct wps_data *wps, const u8 *mac_addr)
1802 if (mac_addr == NULL) {
1803 wpa_printf(MSG_DEBUG, "WPS: No MAC Address received");
1807 wpa_printf(MSG_DEBUG, "WPS: Enrollee MAC Address " MACSTR,
1809 os_memcpy(wps->mac_addr_e, mac_addr, ETH_ALEN);
1810 os_memcpy(wps->peer_dev.mac_addr, mac_addr, ETH_ALEN);
1816 static int wps_process_pubkey(struct wps_data *wps, const u8 *pk,
1819 if (pk == NULL || pk_len == 0) {
1820 wpa_printf(MSG_DEBUG, "WPS: No Public Key received");
1824 #ifdef CONFIG_WPS_OOB
1825 if (wps->wps->oob_conf.pubkey_hash != NULL) {
1827 u8 hash[WPS_HASH_LEN];
1830 sha256_vector(1, addr, &pk_len, hash);
1832 wpabuf_head(wps->wps->oob_conf.pubkey_hash),
1833 WPS_OOB_PUBKEY_HASH_LEN) != 0) {
1834 wpa_printf(MSG_ERROR, "WPS: Public Key hash error");
1838 #endif /* CONFIG_WPS_OOB */
1840 wpabuf_free(wps->dh_pubkey_e);
1841 wps->dh_pubkey_e = wpabuf_alloc_copy(pk, pk_len);
1842 if (wps->dh_pubkey_e == NULL)
1849 static int wps_process_auth_type_flags(struct wps_data *wps, const u8 *auth)
1854 wpa_printf(MSG_DEBUG, "WPS: No Authentication Type flags "
1859 auth_types = WPA_GET_BE16(auth);
1861 wpa_printf(MSG_DEBUG, "WPS: Enrollee Authentication Type flags 0x%x",
1863 wps->auth_type = wps->wps->auth_types & auth_types;
1864 if (wps->auth_type == 0) {
1865 wpa_printf(MSG_DEBUG, "WPS: No match in supported "
1866 "authentication types (own 0x%x Enrollee 0x%x)",
1867 wps->wps->auth_types, auth_types);
1868 #ifdef WPS_WORKAROUNDS
1870 * Some deployed implementations seem to advertise incorrect
1871 * information in this attribute. For example, Linksys WRT350N
1872 * seems to have a byteorder bug that breaks this negotiation.
1873 * In order to interoperate with existing implementations,
1874 * assume that the Enrollee supports everything we do.
1876 wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
1877 "does not advertise supported authentication types "
1879 wps->auth_type = wps->wps->auth_types;
1880 #else /* WPS_WORKAROUNDS */
1882 #endif /* WPS_WORKAROUNDS */
1889 static int wps_process_encr_type_flags(struct wps_data *wps, const u8 *encr)
1894 wpa_printf(MSG_DEBUG, "WPS: No Encryption Type flags "
1899 encr_types = WPA_GET_BE16(encr);
1901 wpa_printf(MSG_DEBUG, "WPS: Enrollee Encryption Type flags 0x%x",
1903 wps->encr_type = wps->wps->encr_types & encr_types;
1904 if (wps->encr_type == 0) {
1905 wpa_printf(MSG_DEBUG, "WPS: No match in supported "
1906 "encryption types (own 0x%x Enrollee 0x%x)",
1907 wps->wps->encr_types, encr_types);
1908 #ifdef WPS_WORKAROUNDS
1910 * Some deployed implementations seem to advertise incorrect
1911 * information in this attribute. For example, Linksys WRT350N
1912 * seems to have a byteorder bug that breaks this negotiation.
1913 * In order to interoperate with existing implementations,
1914 * assume that the Enrollee supports everything we do.
1916 wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
1917 "does not advertise supported encryption types "
1919 wps->encr_type = wps->wps->encr_types;
1920 #else /* WPS_WORKAROUNDS */
1922 #endif /* WPS_WORKAROUNDS */
1929 static int wps_process_conn_type_flags(struct wps_data *wps, const u8 *conn)
1932 wpa_printf(MSG_DEBUG, "WPS: No Connection Type flags "
1937 wpa_printf(MSG_DEBUG, "WPS: Enrollee Connection Type flags 0x%x",
1944 static int wps_process_config_methods(struct wps_data *wps, const u8 *methods)
1948 if (methods == NULL) {
1949 wpa_printf(MSG_DEBUG, "WPS: No Config Methods received");
1953 m = WPA_GET_BE16(methods);
1955 wpa_printf(MSG_DEBUG, "WPS: Enrollee Config Methods 0x%x", m);
1961 static int wps_process_wps_state(struct wps_data *wps, const u8 *state)
1963 if (state == NULL) {
1964 wpa_printf(MSG_DEBUG, "WPS: No Wi-Fi Protected Setup State "
1969 wpa_printf(MSG_DEBUG, "WPS: Enrollee Wi-Fi Protected Setup State %d",
1976 static int wps_process_assoc_state(struct wps_data *wps, const u8 *assoc)
1980 if (assoc == NULL) {
1981 wpa_printf(MSG_DEBUG, "WPS: No Association State received");
1985 a = WPA_GET_BE16(assoc);
1986 wpa_printf(MSG_DEBUG, "WPS: Enrollee Association State %d", a);
1992 static int wps_process_config_error(struct wps_data *wps, const u8 *err)
1997 wpa_printf(MSG_DEBUG, "WPS: No Configuration Error received");
2001 e = WPA_GET_BE16(err);
2002 wpa_printf(MSG_DEBUG, "WPS: Enrollee Configuration Error %d", e);
2008 static enum wps_process_res wps_process_m1(struct wps_data *wps,
2009 struct wps_parse_attr *attr)
2011 wpa_printf(MSG_DEBUG, "WPS: Received M1");
2013 if (wps->state != RECV_M1) {
2014 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2015 "receiving M1", wps->state);
2019 if (wps_process_uuid_e(wps, attr->uuid_e) ||
2020 wps_process_mac_addr(wps, attr->mac_addr) ||
2021 wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
2022 wps_process_pubkey(wps, attr->public_key, attr->public_key_len) ||
2023 wps_process_auth_type_flags(wps, attr->auth_type_flags) ||
2024 wps_process_encr_type_flags(wps, attr->encr_type_flags) ||
2025 wps_process_conn_type_flags(wps, attr->conn_type_flags) ||
2026 wps_process_config_methods(wps, attr->config_methods) ||
2027 wps_process_wps_state(wps, attr->wps_state) ||
2028 wps_process_device_attrs(&wps->peer_dev, attr) ||
2029 wps_process_rf_bands(&wps->peer_dev, attr->rf_bands) ||
2030 wps_process_assoc_state(wps, attr->assoc_state) ||
2031 wps_process_dev_password_id(wps, attr->dev_password_id) ||
2032 wps_process_config_error(wps, attr->config_error) ||
2033 wps_process_os_version(&wps->peer_dev, attr->os_version))
2036 if (wps->dev_pw_id < 0x10 &&
2037 wps->dev_pw_id != DEV_PW_DEFAULT &&
2038 wps->dev_pw_id != DEV_PW_USER_SPECIFIED &&
2039 wps->dev_pw_id != DEV_PW_MACHINE_SPECIFIED &&
2040 wps->dev_pw_id != DEV_PW_REGISTRAR_SPECIFIED &&
2041 (wps->dev_pw_id != DEV_PW_PUSHBUTTON ||
2042 !wps->wps->registrar->pbc)) {
2043 wpa_printf(MSG_DEBUG, "WPS: Unsupported Device Password ID %d",
2045 wps->state = SEND_M2D;
2046 return WPS_CONTINUE;
2049 #ifdef CONFIG_WPS_OOB
2050 if (wps->dev_pw_id >= 0x10 &&
2051 wps->dev_pw_id != wps->wps->oob_dev_pw_id) {
2052 wpa_printf(MSG_DEBUG, "WPS: OOB Device Password ID "
2053 "%d mismatch", wps->dev_pw_id);
2054 wps->state = SEND_M2D;
2055 return WPS_CONTINUE;
2057 #endif /* CONFIG_WPS_OOB */
2059 if (wps->dev_pw_id == DEV_PW_PUSHBUTTON) {
2060 if (wps->wps->registrar->force_pbc_overlap ||
2061 wps_registrar_pbc_overlap(wps->wps->registrar,
2062 wps->mac_addr_e, wps->uuid_e)) {
2063 wpa_printf(MSG_DEBUG, "WPS: PBC overlap - deny PBC "
2065 wps->state = SEND_M2D;
2066 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2067 wps_pbc_overlap_event(wps->wps);
2068 wps->wps->registrar->force_pbc_overlap = 1;
2069 return WPS_CONTINUE;
2071 wps_registrar_add_pbc_session(wps->wps->registrar,
2072 wps->mac_addr_e, wps->uuid_e);
2076 wps->state = SEND_M2;
2077 return WPS_CONTINUE;
2081 static enum wps_process_res wps_process_m3(struct wps_data *wps,
2082 const struct wpabuf *msg,
2083 struct wps_parse_attr *attr)
2085 wpa_printf(MSG_DEBUG, "WPS: Received M3");
2087 if (wps->state != RECV_M3) {
2088 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2089 "receiving M3", wps->state);
2090 wps->state = SEND_WSC_NACK;
2091 return WPS_CONTINUE;
2094 if (wps->pbc && wps->wps->registrar->force_pbc_overlap) {
2095 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2097 wps->state = SEND_WSC_NACK;
2098 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2099 return WPS_CONTINUE;
2102 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2103 wps_process_authenticator(wps, attr->authenticator, msg) ||
2104 wps_process_e_hash1(wps, attr->e_hash1) ||
2105 wps_process_e_hash2(wps, attr->e_hash2)) {
2106 wps->state = SEND_WSC_NACK;
2107 return WPS_CONTINUE;
2110 wps->state = SEND_M4;
2111 return WPS_CONTINUE;
2115 static enum wps_process_res wps_process_m5(struct wps_data *wps,
2116 const struct wpabuf *msg,
2117 struct wps_parse_attr *attr)
2119 struct wpabuf *decrypted;
2120 struct wps_parse_attr eattr;
2122 wpa_printf(MSG_DEBUG, "WPS: Received M5");
2124 if (wps->state != RECV_M5) {
2125 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2126 "receiving M5", wps->state);
2127 wps->state = SEND_WSC_NACK;
2128 return WPS_CONTINUE;
2131 if (wps->pbc && wps->wps->registrar->force_pbc_overlap) {
2132 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2134 wps->state = SEND_WSC_NACK;
2135 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2136 return WPS_CONTINUE;
2139 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2140 wps_process_authenticator(wps, attr->authenticator, msg)) {
2141 wps->state = SEND_WSC_NACK;
2142 return WPS_CONTINUE;
2145 decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2146 attr->encr_settings_len);
2147 if (decrypted == NULL) {
2148 wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
2149 "Settings attribute");
2150 wps->state = SEND_WSC_NACK;
2151 return WPS_CONTINUE;
2154 wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2156 if (wps_parse_msg(decrypted, &eattr) < 0 ||
2157 wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2158 wps_process_e_snonce1(wps, eattr.e_snonce1)) {
2159 wpabuf_free(decrypted);
2160 wps->state = SEND_WSC_NACK;
2161 return WPS_CONTINUE;
2163 wpabuf_free(decrypted);
2165 wps->state = SEND_M6;
2166 return WPS_CONTINUE;
2170 static void wps_sta_cred_cb(struct wps_data *wps)
2173 * Update credential to only include a single authentication and
2174 * encryption type in case the AP configuration includes more than one
2177 if (wps->cred.auth_type & WPS_AUTH_WPA2PSK)
2178 wps->cred.auth_type = WPS_AUTH_WPA2PSK;
2179 else if (wps->cred.auth_type & WPS_AUTH_WPAPSK)
2180 wps->cred.auth_type = WPS_AUTH_WPAPSK;
2181 if (wps->cred.encr_type & WPS_ENCR_AES)
2182 wps->cred.encr_type = WPS_ENCR_AES;
2183 else if (wps->cred.encr_type & WPS_ENCR_TKIP)
2184 wps->cred.encr_type = WPS_ENCR_TKIP;
2185 wpa_printf(MSG_DEBUG, "WPS: Update local configuration based on the "
2186 "AP configuration");
2187 if (wps->wps->cred_cb)
2188 wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
2192 static void wps_cred_update(struct wps_credential *dst,
2193 struct wps_credential *src)
2195 os_memcpy(dst->ssid, src->ssid, sizeof(dst->ssid));
2196 dst->ssid_len = src->ssid_len;
2197 dst->auth_type = src->auth_type;
2198 dst->encr_type = src->encr_type;
2199 dst->key_idx = src->key_idx;
2200 os_memcpy(dst->key, src->key, sizeof(dst->key));
2201 dst->key_len = src->key_len;
2205 static int wps_process_ap_settings_r(struct wps_data *wps,
2206 struct wps_parse_attr *attr)
2211 /* AP Settings Attributes in M7 when Enrollee is an AP */
2212 if (wps_process_ap_settings(attr, &wps->cred) < 0)
2215 wpa_printf(MSG_INFO, "WPS: Received old AP configuration from AP");
2217 if (wps->new_ap_settings) {
2218 wpa_printf(MSG_INFO, "WPS: Update AP configuration based on "
2220 wps_cred_update(&wps->cred, wps->new_ap_settings);
2224 * Use the AP PIN only to receive the current AP settings, not
2225 * to reconfigure the AP.
2227 wps_sta_cred_cb(wps);
2233 static enum wps_process_res wps_process_m7(struct wps_data *wps,
2234 const struct wpabuf *msg,
2235 struct wps_parse_attr *attr)
2237 struct wpabuf *decrypted;
2238 struct wps_parse_attr eattr;
2240 wpa_printf(MSG_DEBUG, "WPS: Received M7");
2242 if (wps->state != RECV_M7) {
2243 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2244 "receiving M7", wps->state);
2245 wps->state = SEND_WSC_NACK;
2246 return WPS_CONTINUE;
2249 if (wps->pbc && wps->wps->registrar->force_pbc_overlap) {
2250 wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2252 wps->state = SEND_WSC_NACK;
2253 wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2254 return WPS_CONTINUE;
2257 if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2258 wps_process_authenticator(wps, attr->authenticator, msg)) {
2259 wps->state = SEND_WSC_NACK;
2260 return WPS_CONTINUE;
2263 decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2264 attr->encr_settings_len);
2265 if (decrypted == NULL) {
2266 wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
2267 "Settings attribute");
2268 wps->state = SEND_WSC_NACK;
2269 return WPS_CONTINUE;
2272 wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2274 if (wps_parse_msg(decrypted, &eattr) < 0 ||
2275 wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2276 wps_process_e_snonce2(wps, eattr.e_snonce2) ||
2277 wps_process_ap_settings_r(wps, &eattr)) {
2278 wpabuf_free(decrypted);
2279 wps->state = SEND_WSC_NACK;
2280 return WPS_CONTINUE;
2283 wpabuf_free(decrypted);
2285 wps->state = SEND_M8;
2286 return WPS_CONTINUE;
2290 static enum wps_process_res wps_process_wsc_msg(struct wps_data *wps,
2291 const struct wpabuf *msg)
2293 struct wps_parse_attr attr;
2294 enum wps_process_res ret = WPS_CONTINUE;
2296 wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG");
2298 if (wps_parse_msg(msg, &attr) < 0)
2301 if (!wps_version_supported(attr.version)) {
2302 wpa_printf(MSG_DEBUG, "WPS: Unsupported message version 0x%x",
2303 attr.version ? *attr.version : 0);
2307 if (attr.msg_type == NULL) {
2308 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2312 if (*attr.msg_type != WPS_M1 &&
2313 (attr.registrar_nonce == NULL ||
2314 os_memcmp(wps->nonce_r, attr.registrar_nonce,
2315 WPS_NONCE_LEN != 0))) {
2316 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2320 switch (*attr.msg_type) {
2322 #ifdef CONFIG_WPS_UPNP
2323 if (wps->wps->wps_upnp && attr.mac_addr) {
2324 /* Remove old pending messages when starting new run */
2325 wps_free_pending_msgs(wps->wps->upnp_msgs);
2326 wps->wps->upnp_msgs = NULL;
2328 upnp_wps_device_send_wlan_event(
2329 wps->wps->wps_upnp, attr.mac_addr,
2330 UPNP_WPS_WLANEVENT_TYPE_EAP, msg);
2332 #endif /* CONFIG_WPS_UPNP */
2333 ret = wps_process_m1(wps, &attr);
2336 ret = wps_process_m3(wps, msg, &attr);
2337 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2338 wps_fail_event(wps->wps, WPS_M3);
2341 ret = wps_process_m5(wps, msg, &attr);
2342 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2343 wps_fail_event(wps->wps, WPS_M5);
2346 ret = wps_process_m7(wps, msg, &attr);
2347 if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2348 wps_fail_event(wps->wps, WPS_M7);
2351 wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d",
2356 if (ret == WPS_CONTINUE) {
2357 /* Save a copy of the last message for Authenticator derivation
2359 wpabuf_free(wps->last_msg);
2360 wps->last_msg = wpabuf_dup(msg);
2367 static enum wps_process_res wps_process_wsc_ack(struct wps_data *wps,
2368 const struct wpabuf *msg)
2370 struct wps_parse_attr attr;
2372 wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK");
2374 if (wps_parse_msg(msg, &attr) < 0)
2377 if (!wps_version_supported(attr.version)) {
2378 wpa_printf(MSG_DEBUG, "WPS: Unsupported message version 0x%x",
2379 attr.version ? *attr.version : 0);
2383 if (attr.msg_type == NULL) {
2384 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2388 if (*attr.msg_type != WPS_WSC_ACK) {
2389 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
2394 #ifdef CONFIG_WPS_UPNP
2395 if (wps->wps->wps_upnp && wps->ext_reg && wps->state == RECV_M2D_ACK &&
2396 upnp_wps_subscribers(wps->wps->wps_upnp)) {
2397 if (wps->wps->upnp_msgs)
2398 return WPS_CONTINUE;
2399 wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
2400 "external Registrar");
2403 #endif /* CONFIG_WPS_UPNP */
2405 if (attr.registrar_nonce == NULL ||
2406 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
2408 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2412 if (attr.enrollee_nonce == NULL ||
2413 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
2414 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
2418 if (wps->state == RECV_M2D_ACK) {
2419 #ifdef CONFIG_WPS_UPNP
2420 if (wps->wps->wps_upnp &&
2421 upnp_wps_subscribers(wps->wps->wps_upnp)) {
2422 if (wps->wps->upnp_msgs)
2423 return WPS_CONTINUE;
2424 if (wps->ext_reg == 0)
2426 wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
2427 "external Registrar");
2430 #endif /* CONFIG_WPS_UPNP */
2432 wpa_printf(MSG_DEBUG, "WPS: No more registrars available - "
2433 "terminate negotiation");
2440 static enum wps_process_res wps_process_wsc_nack(struct wps_data *wps,
2441 const struct wpabuf *msg)
2443 struct wps_parse_attr attr;
2446 wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
2448 old_state = wps->state;
2449 wps->state = SEND_WSC_NACK;
2451 if (wps_parse_msg(msg, &attr) < 0)
2454 if (!wps_version_supported(attr.version)) {
2455 wpa_printf(MSG_DEBUG, "WPS: Unsupported message version 0x%x",
2456 attr.version ? *attr.version : 0);
2460 if (attr.msg_type == NULL) {
2461 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2465 if (*attr.msg_type != WPS_WSC_NACK) {
2466 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
2471 #ifdef CONFIG_WPS_UPNP
2472 if (wps->wps->wps_upnp && wps->ext_reg) {
2473 wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
2474 "Registrar terminated by the Enrollee");
2477 #endif /* CONFIG_WPS_UPNP */
2479 if (attr.registrar_nonce == NULL ||
2480 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
2482 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2486 if (attr.enrollee_nonce == NULL ||
2487 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
2488 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
2492 if (attr.config_error == NULL) {
2493 wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute "
2498 wpa_printf(MSG_DEBUG, "WPS: Enrollee terminated negotiation with "
2499 "Configuration Error %d", WPA_GET_BE16(attr.config_error));
2501 switch (old_state) {
2503 wps_fail_event(wps->wps, WPS_M2);
2506 wps_fail_event(wps->wps, WPS_M4);
2509 wps_fail_event(wps->wps, WPS_M6);
2512 wps_fail_event(wps->wps, WPS_M8);
2522 static enum wps_process_res wps_process_wsc_done(struct wps_data *wps,
2523 const struct wpabuf *msg)
2525 struct wps_parse_attr attr;
2527 wpa_printf(MSG_DEBUG, "WPS: Received WSC_Done");
2529 if (wps->state != RECV_DONE &&
2530 (!wps->wps->wps_upnp || !wps->ext_reg)) {
2531 wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2532 "receiving WSC_Done", wps->state);
2536 if (wps_parse_msg(msg, &attr) < 0)
2539 if (!wps_version_supported(attr.version)) {
2540 wpa_printf(MSG_DEBUG, "WPS: Unsupported message version 0x%x",
2541 attr.version ? *attr.version : 0);
2545 if (attr.msg_type == NULL) {
2546 wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2550 if (*attr.msg_type != WPS_WSC_DONE) {
2551 wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
2556 #ifdef CONFIG_WPS_UPNP
2557 if (wps->wps->wps_upnp && wps->ext_reg) {
2558 wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
2559 "Registrar completed successfully");
2560 wps_device_store(wps->wps->registrar, &wps->peer_dev,
2564 #endif /* CONFIG_WPS_UPNP */
2566 if (attr.registrar_nonce == NULL ||
2567 os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
2569 wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2573 if (attr.enrollee_nonce == NULL ||
2574 os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
2575 wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
2579 wpa_printf(MSG_DEBUG, "WPS: Negotiation completed successfully");
2580 wps_device_store(wps->wps->registrar, &wps->peer_dev,
2583 if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->new_psk &&
2584 wps->wps->ap && !wps->wps->registrar->disable_auto_conf) {
2585 struct wps_credential cred;
2587 wpa_printf(MSG_DEBUG, "WPS: Moving to Configured state based "
2588 "on first Enrollee connection");
2590 os_memset(&cred, 0, sizeof(cred));
2591 os_memcpy(cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
2592 cred.ssid_len = wps->wps->ssid_len;
2593 cred.auth_type = WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK;
2594 cred.encr_type = WPS_ENCR_TKIP | WPS_ENCR_AES;
2595 os_memcpy(cred.key, wps->new_psk, wps->new_psk_len);
2596 cred.key_len = wps->new_psk_len;
2598 wps->wps->wps_state = WPS_STATE_CONFIGURED;
2599 wpa_hexdump_ascii_key(MSG_DEBUG,
2600 "WPS: Generated random passphrase",
2601 wps->new_psk, wps->new_psk_len);
2602 if (wps->wps->cred_cb)
2603 wps->wps->cred_cb(wps->wps->cb_ctx, &cred);
2605 os_free(wps->new_psk);
2606 wps->new_psk = NULL;
2610 wps_sta_cred_cb(wps);
2613 if (wps_cb_new_psk(wps->wps->registrar, wps->mac_addr_e,
2614 wps->new_psk, wps->new_psk_len)) {
2615 wpa_printf(MSG_DEBUG, "WPS: Failed to configure the "
2618 os_free(wps->new_psk);
2619 wps->new_psk = NULL;
2622 wps_cb_reg_success(wps->wps->registrar, wps->mac_addr_e, wps->uuid_e);
2625 wps_registrar_remove_pbc_session(wps->wps->registrar,
2626 wps->mac_addr_e, wps->uuid_e);
2627 wps_registrar_pbc_completed(wps->wps->registrar);
2629 wps_registrar_pin_completed(wps->wps->registrar);
2632 wps_success_event(wps->wps);
2638 enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
2639 enum wsc_op_code op_code,
2640 const struct wpabuf *msg)
2642 enum wps_process_res ret;
2644 wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu "
2646 (unsigned long) wpabuf_len(msg), op_code);
2648 #ifdef CONFIG_WPS_UPNP
2649 if (wps->wps->wps_upnp && op_code == WSC_MSG && wps->ext_reg == 1) {
2650 struct wps_parse_attr attr;
2651 if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type &&
2652 *attr.msg_type == WPS_M3)
2653 wps->ext_reg = 2; /* past M2/M2D phase */
2655 if (wps->ext_reg > 1)
2656 wps_registrar_free_pending_m2(wps->wps);
2657 if (wps->wps->wps_upnp && wps->ext_reg &&
2658 wps->wps->upnp_msgs == NULL &&
2659 (op_code == WSC_MSG || op_code == WSC_Done)) {
2660 struct wps_parse_attr attr;
2662 if (wps_parse_msg(msg, &attr) < 0 || attr.msg_type == NULL)
2665 type = *attr.msg_type;
2666 wpa_printf(MSG_DEBUG, "WPS: Sending received message (type %d)"
2667 " to external Registrar for processing", type);
2668 upnp_wps_device_send_wlan_event(wps->wps->wps_upnp,
2670 UPNP_WPS_WLANEVENT_TYPE_EAP,
2672 if (op_code == WSC_MSG)
2674 } else if (wps->wps->wps_upnp && wps->ext_reg && op_code == WSC_MSG) {
2675 wpa_printf(MSG_DEBUG, "WPS: Skip internal processing - using "
2676 "external Registrar");
2677 return WPS_CONTINUE;
2679 #endif /* CONFIG_WPS_UPNP */
2683 return wps_process_wsc_msg(wps, msg);
2685 return wps_process_wsc_ack(wps, msg);
2687 return wps_process_wsc_nack(wps, msg);
2689 ret = wps_process_wsc_done(wps, msg);
2690 if (ret == WPS_FAILURE) {
2691 wps->state = SEND_WSC_NACK;
2692 wps_fail_event(wps->wps, WPS_WSC_DONE);
2696 wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code);
2702 int wps_registrar_update_ie(struct wps_registrar *reg)
2704 return wps_set_ie(reg);
2708 static void wps_registrar_set_selected_timeout(void *eloop_ctx,
2711 struct wps_registrar *reg = eloop_ctx;
2713 wpa_printf(MSG_DEBUG, "WPS: SetSelectedRegistrar timed out - "
2714 "unselect Registrar");
2715 reg->selected_registrar = 0;
2717 reg->sel_reg_dev_password_id_override = -1;
2718 reg->sel_reg_config_methods_override = -1;
2720 wps_cb_set_sel_reg(reg);
2725 * wps_registrar_set_selected_registrar - Notification of SetSelectedRegistrar
2726 * @reg: Registrar data from wps_registrar_init()
2727 * @msg: Received message from SetSelectedRegistrar
2728 * Returns: 0 on success, -1 on failure
2730 * This function is called when an AP receives a SetSelectedRegistrar UPnP
2733 int wps_registrar_set_selected_registrar(struct wps_registrar *reg,
2734 const struct wpabuf *msg)
2736 struct wps_parse_attr attr;
2738 wpa_hexdump_buf(MSG_MSGDUMP, "WPS: SetSelectedRegistrar attributes",
2741 if (wps_parse_msg(msg, &attr) < 0)
2743 if (!wps_version_supported(attr.version)) {
2744 wpa_printf(MSG_DEBUG, "WPS: Unsupported SetSelectedRegistrar "
2745 "version 0x%x", attr.version ? *attr.version : 0);
2749 if (attr.selected_registrar == NULL ||
2750 *attr.selected_registrar == 0) {
2751 wpa_printf(MSG_DEBUG, "WPS: SetSelectedRegistrar: Disable "
2752 "Selected Registrar");
2753 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg,
2755 wps_registrar_set_selected_timeout(reg, NULL);
2759 reg->selected_registrar = 1;
2760 reg->sel_reg_dev_password_id_override = attr.dev_password_id ?
2761 WPA_GET_BE16(attr.dev_password_id) : DEV_PW_DEFAULT;
2762 reg->sel_reg_config_methods_override = attr.sel_reg_config_methods ?
2763 WPA_GET_BE16(attr.sel_reg_config_methods) : -1;
2766 eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
2767 eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
2768 wps_registrar_set_selected_timeout,
2774 int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
2775 char *buf, size_t buflen)
2777 struct wps_registrar_device *d;
2781 d = wps_device_get(reg, addr);
2784 if (uuid_bin2str(d->uuid, uuid, sizeof(uuid)))
2787 ret = os_snprintf(buf + len, buflen - len,
2789 "wpsPrimaryDeviceType=%u-%08X-%u\n"
2790 "wpsDeviceName=%s\n"
2791 "wpsManufacturer=%s\n"
2793 "wpsModelNumber=%s\n"
2794 "wpsSerialNumber=%s\n",
2796 d->dev.categ, d->dev.oui, d->dev.sub_categ,
2797 d->dev.device_name ? d->dev.device_name : "",
2798 d->dev.manufacturer ? d->dev.manufacturer : "",
2799 d->dev.model_name ? d->dev.model_name : "",
2800 d->dev.model_number ? d->dev.model_number : "",
2801 d->dev.serial_number ? d->dev.serial_number : "");
2802 if (ret < 0 || (size_t) ret >= buflen - len)