1/*
2 * Wi-Fi Protected Setup - Registrar
3 * Copyright (c) 2008-2013, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#include "utils/includes.h"
10
11#include "utils/common.h"
12#include "utils/base64.h"
13#include "utils/eloop.h"
14#include "utils/uuid.h"
15#include "utils/list.h"
16#include "crypto/crypto.h"
17#include "crypto/sha256.h"
18#include "crypto/random.h"
19#include "common/ieee802_11_defs.h"
20#include "wps_i.h"
21#include "wps_dev_attr.h"
22#include "wps_upnp.h"
23#include "wps_upnp_i.h"
24
25#ifndef CONFIG_WPS_STRICT
26#define WPS_WORKAROUNDS
27#endif /* CONFIG_WPS_STRICT */
28
29#ifdef CONFIG_WPS_NFC
30
31struct wps_nfc_pw_token {
32	struct dl_list list;
33	u8 pubkey_hash[WPS_OOB_PUBKEY_HASH_LEN];
34	u16 pw_id;
35	u8 dev_pw[WPS_OOB_DEVICE_PASSWORD_LEN * 2 + 1];
36	size_t dev_pw_len;
37};
38
39
40static void wps_remove_nfc_pw_token(struct wps_nfc_pw_token *token)
41{
42	dl_list_del(&token->list);
43	os_free(token);
44}
45
46
47static void wps_free_nfc_pw_tokens(struct dl_list *tokens, u16 pw_id)
48{
49	struct wps_nfc_pw_token *token, *prev;
50	dl_list_for_each_safe(token, prev, tokens, struct wps_nfc_pw_token,
51			      list) {
52		if (pw_id == 0 || pw_id == token->pw_id)
53			wps_remove_nfc_pw_token(token);
54	}
55}
56
57
58static struct wps_nfc_pw_token * wps_get_nfc_pw_token(struct dl_list *tokens,
59						      u16 pw_id)
60{
61	struct wps_nfc_pw_token *token;
62	dl_list_for_each(token, tokens, struct wps_nfc_pw_token, list) {
63		if (pw_id == token->pw_id)
64			return token;
65	}
66	return NULL;
67}
68
69#else /* CONFIG_WPS_NFC */
70
71#define wps_free_nfc_pw_tokens(t, p) do { } while (0)
72
73#endif /* CONFIG_WPS_NFC */
74
75
76struct wps_uuid_pin {
77	struct dl_list list;
78	u8 uuid[WPS_UUID_LEN];
79	int wildcard_uuid;
80	u8 *pin;
81	size_t pin_len;
82#define PIN_LOCKED BIT(0)
83#define PIN_EXPIRES BIT(1)
84	int flags;
85	struct os_time expiration;
86	u8 enrollee_addr[ETH_ALEN];
87};
88
89
90static void wps_free_pin(struct wps_uuid_pin *pin)
91{
92	os_free(pin->pin);
93	os_free(pin);
94}
95
96
97static void wps_remove_pin(struct wps_uuid_pin *pin)
98{
99	dl_list_del(&pin->list);
100	wps_free_pin(pin);
101}
102
103
104static void wps_free_pins(struct dl_list *pins)
105{
106	struct wps_uuid_pin *pin, *prev;
107	dl_list_for_each_safe(pin, prev, pins, struct wps_uuid_pin, list)
108		wps_remove_pin(pin);
109}
110
111
112struct wps_pbc_session {
113	struct wps_pbc_session *next;
114	u8 addr[ETH_ALEN];
115	u8 uuid_e[WPS_UUID_LEN];
116	struct os_time timestamp;
117};
118
119
120static void wps_free_pbc_sessions(struct wps_pbc_session *pbc)
121{
122	struct wps_pbc_session *prev;
123
124	while (pbc) {
125		prev = pbc;
126		pbc = pbc->next;
127		os_free(prev);
128	}
129}
130
131
132struct wps_registrar_device {
133	struct wps_registrar_device *next;
134	struct wps_device_data dev;
135	u8 uuid[WPS_UUID_LEN];
136};
137
138
139struct wps_registrar {
140	struct wps_context *wps;
141
142	int pbc;
143	int selected_registrar;
144
145	int (*new_psk_cb)(void *ctx, const u8 *mac_addr, const u8 *p2p_dev_addr,
146			  const u8 *psk, size_t psk_len);
147	int (*set_ie_cb)(void *ctx, struct wpabuf *beacon_ie,
148			 struct wpabuf *probe_resp_ie);
149	void (*pin_needed_cb)(void *ctx, const u8 *uuid_e,
150			      const struct wps_device_data *dev);
151	void (*reg_success_cb)(void *ctx, const u8 *mac_addr,
152			       const u8 *uuid_e, const u8 *dev_pw,
153			       size_t dev_pw_len);
154	void (*set_sel_reg_cb)(void *ctx, int sel_reg, u16 dev_passwd_id,
155			       u16 sel_reg_config_methods);
156	void (*enrollee_seen_cb)(void *ctx, const u8 *addr, const u8 *uuid_e,
157				 const u8 *pri_dev_type, u16 config_methods,
158				 u16 dev_password_id, u8 request_type,
159				 const char *dev_name);
160	void *cb_ctx;
161
162	struct dl_list pins;
163	struct dl_list nfc_pw_tokens;
164	struct wps_pbc_session *pbc_sessions;
165
166	int skip_cred_build;
167	struct wpabuf *extra_cred;
168	int disable_auto_conf;
169	int sel_reg_union;
170	int sel_reg_dev_password_id_override;
171	int sel_reg_config_methods_override;
172	int static_wep_only;
173	int dualband;
174	int force_per_enrollee_psk;
175
176	struct wps_registrar_device *devices;
177
178	int force_pbc_overlap;
179
180	u8 authorized_macs[WPS_MAX_AUTHORIZED_MACS][ETH_ALEN];
181	u8 authorized_macs_union[WPS_MAX_AUTHORIZED_MACS][ETH_ALEN];
182
183	u8 p2p_dev_addr[ETH_ALEN];
184
185	u8 pbc_ignore_uuid[WPS_UUID_LEN];
186	struct os_time pbc_ignore_start;
187};
188
189
190static int wps_set_ie(struct wps_registrar *reg);
191static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx);
192static void wps_registrar_set_selected_timeout(void *eloop_ctx,
193					       void *timeout_ctx);
194static void wps_registrar_remove_pin(struct wps_registrar *reg,
195				     struct wps_uuid_pin *pin);
196
197
198static void wps_registrar_add_authorized_mac(struct wps_registrar *reg,
199					     const u8 *addr)
200{
201	int i;
202	wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC " MACSTR,
203		   MAC2STR(addr));
204	for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
205		if (os_memcmp(reg->authorized_macs[i], addr, ETH_ALEN) == 0) {
206			wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was "
207				   "already in the list");
208			return; /* already in list */
209		}
210	for (i = WPS_MAX_AUTHORIZED_MACS - 1; i > 0; i--)
211		os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i - 1],
212			  ETH_ALEN);
213	os_memcpy(reg->authorized_macs[0], addr, ETH_ALEN);
214	wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
215		    (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
216}
217
218
219static void wps_registrar_remove_authorized_mac(struct wps_registrar *reg,
220						const u8 *addr)
221{
222	int i;
223	wpa_printf(MSG_DEBUG, "WPS: Remove authorized MAC " MACSTR,
224		   MAC2STR(addr));
225	for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++) {
226		if (os_memcmp(reg->authorized_macs, addr, ETH_ALEN) == 0)
227			break;
228	}
229	if (i == WPS_MAX_AUTHORIZED_MACS) {
230		wpa_printf(MSG_DEBUG, "WPS: Authorized MAC was not in the "
231			   "list");
232		return; /* not in the list */
233	}
234	for (; i + 1 < WPS_MAX_AUTHORIZED_MACS; i++)
235		os_memcpy(reg->authorized_macs[i], reg->authorized_macs[i + 1],
236			  ETH_ALEN);
237	os_memset(reg->authorized_macs[WPS_MAX_AUTHORIZED_MACS - 1], 0,
238		  ETH_ALEN);
239	wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs",
240		    (u8 *) reg->authorized_macs, sizeof(reg->authorized_macs));
241}
242
243
244static void wps_free_devices(struct wps_registrar_device *dev)
245{
246	struct wps_registrar_device *prev;
247
248	while (dev) {
249		prev = dev;
250		dev = dev->next;
251		wps_device_data_free(&prev->dev);
252		os_free(prev);
253	}
254}
255
256
257static struct wps_registrar_device * wps_device_get(struct wps_registrar *reg,
258						    const u8 *addr)
259{
260	struct wps_registrar_device *dev;
261
262	for (dev = reg->devices; dev; dev = dev->next) {
263		if (os_memcmp(dev->dev.mac_addr, addr, ETH_ALEN) == 0)
264			return dev;
265	}
266	return NULL;
267}
268
269
270static void wps_device_clone_data(struct wps_device_data *dst,
271				  struct wps_device_data *src)
272{
273	os_memcpy(dst->mac_addr, src->mac_addr, ETH_ALEN);
274	os_memcpy(dst->pri_dev_type, src->pri_dev_type, WPS_DEV_TYPE_LEN);
275
276#define WPS_STRDUP(n) \
277	os_free(dst->n); \
278	dst->n = src->n ? os_strdup(src->n) : NULL
279
280	WPS_STRDUP(device_name);
281	WPS_STRDUP(manufacturer);
282	WPS_STRDUP(model_name);
283	WPS_STRDUP(model_number);
284	WPS_STRDUP(serial_number);
285#undef WPS_STRDUP
286}
287
288
289int wps_device_store(struct wps_registrar *reg,
290		     struct wps_device_data *dev, const u8 *uuid)
291{
292	struct wps_registrar_device *d;
293
294	d = wps_device_get(reg, dev->mac_addr);
295	if (d == NULL) {
296		d = os_zalloc(sizeof(*d));
297		if (d == NULL)
298			return -1;
299		d->next = reg->devices;
300		reg->devices = d;
301	}
302
303	wps_device_clone_data(&d->dev, dev);
304	os_memcpy(d->uuid, uuid, WPS_UUID_LEN);
305
306	return 0;
307}
308
309
310static void wps_registrar_add_pbc_session(struct wps_registrar *reg,
311					  const u8 *addr, const u8 *uuid_e)
312{
313	struct wps_pbc_session *pbc, *prev = NULL;
314	struct os_time now;
315
316	os_get_time(&now);
317
318	pbc = reg->pbc_sessions;
319	while (pbc) {
320		if (os_memcmp(pbc->addr, addr, ETH_ALEN) == 0 &&
321		    os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0) {
322			if (prev)
323				prev->next = pbc->next;
324			else
325				reg->pbc_sessions = pbc->next;
326			break;
327		}
328		prev = pbc;
329		pbc = pbc->next;
330	}
331
332	if (!pbc) {
333		pbc = os_zalloc(sizeof(*pbc));
334		if (pbc == NULL)
335			return;
336		os_memcpy(pbc->addr, addr, ETH_ALEN);
337		if (uuid_e)
338			os_memcpy(pbc->uuid_e, uuid_e, WPS_UUID_LEN);
339	}
340
341	pbc->next = reg->pbc_sessions;
342	reg->pbc_sessions = pbc;
343	pbc->timestamp = now;
344
345	/* remove entries that have timed out */
346	prev = pbc;
347	pbc = pbc->next;
348
349	while (pbc) {
350		if (now.sec > pbc->timestamp.sec + WPS_PBC_WALK_TIME) {
351			prev->next = NULL;
352			wps_free_pbc_sessions(pbc);
353			break;
354		}
355		prev = pbc;
356		pbc = pbc->next;
357	}
358}
359
360
361static void wps_registrar_remove_pbc_session(struct wps_registrar *reg,
362					     const u8 *uuid_e,
363					     const u8 *p2p_dev_addr)
364{
365	struct wps_pbc_session *pbc, *prev = NULL, *tmp;
366
367	pbc = reg->pbc_sessions;
368	while (pbc) {
369		if (os_memcmp(pbc->uuid_e, uuid_e, WPS_UUID_LEN) == 0 ||
370#ifdef ANDROID_P2P
371		    (p2p_dev_addr && !is_zero_ether_addr(pbc->addr) &&
372		     os_memcmp(pbc->addr, p2p_dev_addr, ETH_ALEN) ==
373#else
374		    (p2p_dev_addr && !is_zero_ether_addr(reg->p2p_dev_addr) &&
375		     os_memcmp(reg->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
376#endif
377		     0)) {
378			if (prev)
379				prev->next = pbc->next;
380			else
381				reg->pbc_sessions = pbc->next;
382			tmp = pbc;
383			pbc = pbc->next;
384			wpa_printf(MSG_DEBUG, "WPS: Removing PBC session for "
385				   "addr=" MACSTR, MAC2STR(tmp->addr));
386			wpa_hexdump(MSG_DEBUG, "WPS: Removed UUID-E",
387				    tmp->uuid_e, WPS_UUID_LEN);
388			os_free(tmp);
389			continue;
390		}
391		prev = pbc;
392		pbc = pbc->next;
393	}
394}
395
396
397int wps_registrar_pbc_overlap(struct wps_registrar *reg,
398			      const u8 *addr, const u8 *uuid_e)
399{
400	int count = 0;
401	struct wps_pbc_session *pbc;
402	struct wps_pbc_session *first = NULL;
403	struct os_time now;
404
405	os_get_time(&now);
406
407	wpa_printf(MSG_DEBUG, "WPS: Checking active PBC sessions for overlap");
408
409	if (uuid_e) {
410		wpa_printf(MSG_DEBUG, "WPS: Add one for the requested UUID");
411		wpa_hexdump(MSG_DEBUG, "WPS: Requested UUID",
412			    uuid_e, WPS_UUID_LEN);
413		count++;
414	}
415
416	for (pbc = reg->pbc_sessions; pbc; pbc = pbc->next) {
417		wpa_printf(MSG_DEBUG, "WPS: Consider PBC session with " MACSTR,
418			   MAC2STR(pbc->addr));
419		wpa_hexdump(MSG_DEBUG, "WPS: UUID-E",
420			    pbc->uuid_e, WPS_UUID_LEN);
421		if (now.sec > pbc->timestamp.sec + WPS_PBC_WALK_TIME) {
422			wpa_printf(MSG_DEBUG, "WPS: PBC walk time has "
423				   "expired");
424			break;
425		}
426		if (first &&
427		    os_memcmp(pbc->uuid_e, first->uuid_e, WPS_UUID_LEN) == 0) {
428			wpa_printf(MSG_DEBUG, "WPS: Same Enrollee");
429			continue; /* same Enrollee */
430		}
431		if (uuid_e == NULL ||
432		    os_memcmp(uuid_e, pbc->uuid_e, WPS_UUID_LEN)) {
433			wpa_printf(MSG_DEBUG, "WPS: New Enrollee");
434			count++;
435		}
436		if (first == NULL)
437			first = pbc;
438	}
439
440	wpa_printf(MSG_DEBUG, "WPS: %u active PBC session(s) found", count);
441
442	return count > 1 ? 1 : 0;
443}
444
445
446static int wps_build_wps_state(struct wps_context *wps, struct wpabuf *msg)
447{
448	wpa_printf(MSG_DEBUG, "WPS:  * Wi-Fi Protected Setup State (%d)",
449		   wps->wps_state);
450	wpabuf_put_be16(msg, ATTR_WPS_STATE);
451	wpabuf_put_be16(msg, 1);
452	wpabuf_put_u8(msg, wps->wps_state);
453	return 0;
454}
455
456
457#ifdef CONFIG_WPS_UPNP
458static void wps_registrar_free_pending_m2(struct wps_context *wps)
459{
460	struct upnp_pending_message *p, *p2, *prev = NULL;
461	p = wps->upnp_msgs;
462	while (p) {
463		if (p->type == WPS_M2 || p->type == WPS_M2D) {
464			if (prev == NULL)
465				wps->upnp_msgs = p->next;
466			else
467				prev->next = p->next;
468			wpa_printf(MSG_DEBUG, "WPS UPnP: Drop pending M2/M2D");
469			p2 = p;
470			p = p->next;
471			wpabuf_free(p2->msg);
472			os_free(p2);
473			continue;
474		}
475		prev = p;
476		p = p->next;
477	}
478}
479#endif /* CONFIG_WPS_UPNP */
480
481
482static int wps_build_ap_setup_locked(struct wps_context *wps,
483				     struct wpabuf *msg)
484{
485	if (wps->ap_setup_locked && wps->ap_setup_locked != 2) {
486		wpa_printf(MSG_DEBUG, "WPS:  * AP Setup Locked");
487		wpabuf_put_be16(msg, ATTR_AP_SETUP_LOCKED);
488		wpabuf_put_be16(msg, 1);
489		wpabuf_put_u8(msg, 1);
490	}
491	return 0;
492}
493
494
495static int wps_build_selected_registrar(struct wps_registrar *reg,
496					struct wpabuf *msg)
497{
498	if (!reg->sel_reg_union)
499		return 0;
500	wpa_printf(MSG_DEBUG, "WPS:  * Selected Registrar");
501	wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR);
502	wpabuf_put_be16(msg, 1);
503	wpabuf_put_u8(msg, 1);
504	return 0;
505}
506
507
508static int wps_build_sel_reg_dev_password_id(struct wps_registrar *reg,
509					     struct wpabuf *msg)
510{
511	u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
512	if (!reg->sel_reg_union)
513		return 0;
514	if (reg->sel_reg_dev_password_id_override >= 0)
515		id = reg->sel_reg_dev_password_id_override;
516	wpa_printf(MSG_DEBUG, "WPS:  * Device Password ID (%d)", id);
517	wpabuf_put_be16(msg, ATTR_DEV_PASSWORD_ID);
518	wpabuf_put_be16(msg, 2);
519	wpabuf_put_be16(msg, id);
520	return 0;
521}
522
523
524static int wps_build_sel_pbc_reg_uuid_e(struct wps_registrar *reg,
525					struct wpabuf *msg)
526{
527	u16 id = reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT;
528	if (!reg->sel_reg_union)
529		return 0;
530	if (reg->sel_reg_dev_password_id_override >= 0)
531		id = reg->sel_reg_dev_password_id_override;
532	if (id != DEV_PW_PUSHBUTTON || !reg->dualband)
533		return 0;
534	return wps_build_uuid_e(msg, reg->wps->uuid);
535}
536
537
538static void wps_set_pushbutton(u16 *methods, u16 conf_methods)
539{
540	*methods |= WPS_CONFIG_PUSHBUTTON;
541#ifdef CONFIG_WPS2
542	if ((conf_methods & WPS_CONFIG_VIRT_PUSHBUTTON) ==
543	    WPS_CONFIG_VIRT_PUSHBUTTON)
544		*methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
545	if ((conf_methods & WPS_CONFIG_PHY_PUSHBUTTON) ==
546	    WPS_CONFIG_PHY_PUSHBUTTON)
547		*methods |= WPS_CONFIG_PHY_PUSHBUTTON;
548	if ((*methods & WPS_CONFIG_VIRT_PUSHBUTTON) !=
549	    WPS_CONFIG_VIRT_PUSHBUTTON &&
550	    (*methods & WPS_CONFIG_PHY_PUSHBUTTON) !=
551	    WPS_CONFIG_PHY_PUSHBUTTON) {
552		/*
553		 * Required to include virtual/physical flag, but we were not
554		 * configured with push button type, so have to default to one
555		 * of them.
556		 */
557		*methods |= WPS_CONFIG_PHY_PUSHBUTTON;
558	}
559#endif /* CONFIG_WPS2 */
560}
561
562
563static int wps_build_sel_reg_config_methods(struct wps_registrar *reg,
564					    struct wpabuf *msg)
565{
566	u16 methods;
567	if (!reg->sel_reg_union)
568		return 0;
569	methods = reg->wps->config_methods;
570	methods &= ~WPS_CONFIG_PUSHBUTTON;
571#ifdef CONFIG_WPS2
572	methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
573		     WPS_CONFIG_PHY_PUSHBUTTON);
574#endif /* CONFIG_WPS2 */
575	if (reg->pbc)
576		wps_set_pushbutton(&methods, reg->wps->config_methods);
577	if (reg->sel_reg_config_methods_override >= 0)
578		methods = reg->sel_reg_config_methods_override;
579	wpa_printf(MSG_DEBUG, "WPS:  * Selected Registrar Config Methods (%x)",
580		   methods);
581	wpabuf_put_be16(msg, ATTR_SELECTED_REGISTRAR_CONFIG_METHODS);
582	wpabuf_put_be16(msg, 2);
583	wpabuf_put_be16(msg, methods);
584	return 0;
585}
586
587
588static int wps_build_probe_config_methods(struct wps_registrar *reg,
589					  struct wpabuf *msg)
590{
591	u16 methods;
592	/*
593	 * These are the methods that the AP supports as an Enrollee for adding
594	 * external Registrars.
595	 */
596	methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
597#ifdef CONFIG_WPS2
598	methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
599		     WPS_CONFIG_PHY_PUSHBUTTON);
600#endif /* CONFIG_WPS2 */
601	wpa_printf(MSG_DEBUG, "WPS:  * Config Methods (%x)", methods);
602	wpabuf_put_be16(msg, ATTR_CONFIG_METHODS);
603	wpabuf_put_be16(msg, 2);
604	wpabuf_put_be16(msg, methods);
605	return 0;
606}
607
608
609static int wps_build_config_methods_r(struct wps_registrar *reg,
610				      struct wpabuf *msg)
611{
612	return wps_build_config_methods(msg, reg->wps->config_methods);
613}
614
615
616const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count)
617{
618	*count = 0;
619
620#ifdef CONFIG_WPS2
621	while (*count < WPS_MAX_AUTHORIZED_MACS) {
622		if (is_zero_ether_addr(reg->authorized_macs_union[*count]))
623			break;
624		(*count)++;
625	}
626#endif /* CONFIG_WPS2 */
627
628	return (const u8 *) reg->authorized_macs_union;
629}
630
631
632/**
633 * wps_registrar_init - Initialize WPS Registrar data
634 * @wps: Pointer to longterm WPS context
635 * @cfg: Registrar configuration
636 * Returns: Pointer to allocated Registrar data or %NULL on failure
637 *
638 * This function is used to initialize WPS Registrar functionality. It can be
639 * used for a single Registrar run (e.g., when run in a supplicant) or multiple
640 * runs (e.g., when run as an internal Registrar in an AP). Caller is
641 * responsible for freeing the returned data with wps_registrar_deinit() when
642 * Registrar functionality is not needed anymore.
643 */
644struct wps_registrar *
645wps_registrar_init(struct wps_context *wps,
646		   const struct wps_registrar_config *cfg)
647{
648	struct wps_registrar *reg = os_zalloc(sizeof(*reg));
649	if (reg == NULL)
650		return NULL;
651
652	dl_list_init(&reg->pins);
653	dl_list_init(&reg->nfc_pw_tokens);
654	reg->wps = wps;
655	reg->new_psk_cb = cfg->new_psk_cb;
656	reg->set_ie_cb = cfg->set_ie_cb;
657	reg->pin_needed_cb = cfg->pin_needed_cb;
658	reg->reg_success_cb = cfg->reg_success_cb;
659	reg->set_sel_reg_cb = cfg->set_sel_reg_cb;
660	reg->enrollee_seen_cb = cfg->enrollee_seen_cb;
661	reg->cb_ctx = cfg->cb_ctx;
662	reg->skip_cred_build = cfg->skip_cred_build;
663	if (cfg->extra_cred) {
664		reg->extra_cred = wpabuf_alloc_copy(cfg->extra_cred,
665						    cfg->extra_cred_len);
666		if (reg->extra_cred == NULL) {
667			os_free(reg);
668			return NULL;
669		}
670	}
671	reg->disable_auto_conf = cfg->disable_auto_conf;
672	reg->sel_reg_dev_password_id_override = -1;
673	reg->sel_reg_config_methods_override = -1;
674	reg->static_wep_only = cfg->static_wep_only;
675	reg->dualband = cfg->dualband;
676	reg->force_per_enrollee_psk = cfg->force_per_enrollee_psk;
677
678	if (wps_set_ie(reg)) {
679		wps_registrar_deinit(reg);
680		return NULL;
681	}
682
683	return reg;
684}
685
686
687/**
688 * wps_registrar_deinit - Deinitialize WPS Registrar data
689 * @reg: Registrar data from wps_registrar_init()
690 */
691void wps_registrar_deinit(struct wps_registrar *reg)
692{
693	if (reg == NULL)
694		return;
695	eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
696	eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
697	wps_free_pins(&reg->pins);
698	wps_free_nfc_pw_tokens(&reg->nfc_pw_tokens, 0);
699	wps_free_pbc_sessions(reg->pbc_sessions);
700	wpabuf_free(reg->extra_cred);
701	wps_free_devices(reg->devices);
702	os_free(reg);
703}
704
705
706static void wps_registrar_invalidate_unused(struct wps_registrar *reg)
707{
708	struct wps_uuid_pin *pin;
709
710	dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
711		if (pin->wildcard_uuid == 1 && !(pin->flags & PIN_LOCKED)) {
712			wpa_printf(MSG_DEBUG, "WPS: Invalidate previously "
713				   "configured wildcard PIN");
714			wps_registrar_remove_pin(reg, pin);
715			break;
716		}
717	}
718}
719
720
721/**
722 * wps_registrar_add_pin - Configure a new PIN for Registrar
723 * @reg: Registrar data from wps_registrar_init()
724 * @addr: Enrollee MAC address or %NULL if not known
725 * @uuid: UUID-E or %NULL for wildcard (any UUID)
726 * @pin: PIN (Device Password)
727 * @pin_len: Length of pin in octets
728 * @timeout: Time (in seconds) when the PIN will be invalidated; 0 = no timeout
729 * Returns: 0 on success, -1 on failure
730 */
731int wps_registrar_add_pin(struct wps_registrar *reg, const u8 *addr,
732			  const u8 *uuid, const u8 *pin, size_t pin_len,
733			  int timeout)
734{
735	struct wps_uuid_pin *p;
736
737	p = os_zalloc(sizeof(*p));
738	if (p == NULL)
739		return -1;
740	if (addr)
741		os_memcpy(p->enrollee_addr, addr, ETH_ALEN);
742	if (uuid == NULL)
743		p->wildcard_uuid = 1;
744	else
745		os_memcpy(p->uuid, uuid, WPS_UUID_LEN);
746	p->pin = os_malloc(pin_len);
747	if (p->pin == NULL) {
748		os_free(p);
749		return -1;
750	}
751	os_memcpy(p->pin, pin, pin_len);
752	p->pin_len = pin_len;
753
754	if (timeout) {
755		p->flags |= PIN_EXPIRES;
756		os_get_time(&p->expiration);
757		p->expiration.sec += timeout;
758	}
759
760	if (p->wildcard_uuid)
761		wps_registrar_invalidate_unused(reg);
762
763	dl_list_add(&reg->pins, &p->list);
764
765	wpa_printf(MSG_DEBUG, "WPS: A new PIN configured (timeout=%d)",
766		   timeout);
767	wpa_hexdump(MSG_DEBUG, "WPS: UUID", uuid, WPS_UUID_LEN);
768	wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: PIN", pin, pin_len);
769	reg->selected_registrar = 1;
770	reg->pbc = 0;
771	if (addr)
772		wps_registrar_add_authorized_mac(reg, addr);
773	else
774		wps_registrar_add_authorized_mac(
775			reg, (u8 *) "\xff\xff\xff\xff\xff\xff");
776	wps_registrar_selected_registrar_changed(reg, 0);
777	eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
778	eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
779			       wps_registrar_set_selected_timeout,
780			       reg, NULL);
781
782	return 0;
783}
784
785
786static void wps_registrar_remove_pin(struct wps_registrar *reg,
787				     struct wps_uuid_pin *pin)
788{
789	u8 *addr;
790	u8 bcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
791
792	if (is_zero_ether_addr(pin->enrollee_addr))
793		addr = bcast;
794	else
795		addr = pin->enrollee_addr;
796	wps_registrar_remove_authorized_mac(reg, addr);
797	wps_remove_pin(pin);
798	wps_registrar_selected_registrar_changed(reg, 0);
799}
800
801
802static void wps_registrar_expire_pins(struct wps_registrar *reg)
803{
804	struct wps_uuid_pin *pin, *prev;
805	struct os_time now;
806
807	os_get_time(&now);
808	dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
809	{
810		if ((pin->flags & PIN_EXPIRES) &&
811		    os_time_before(&pin->expiration, &now)) {
812			wpa_hexdump(MSG_DEBUG, "WPS: Expired PIN for UUID",
813				    pin->uuid, WPS_UUID_LEN);
814			wps_registrar_remove_pin(reg, pin);
815		}
816	}
817}
818
819
820/**
821 * wps_registrar_invalidate_wildcard_pin - Invalidate a wildcard PIN
822 * @reg: Registrar data from wps_registrar_init()
823 * @dev_pw: PIN to search for or %NULL to match any
824 * @dev_pw_len: Length of dev_pw in octets
825 * Returns: 0 on success, -1 if not wildcard PIN is enabled
826 */
827static int wps_registrar_invalidate_wildcard_pin(struct wps_registrar *reg,
828						 const u8 *dev_pw,
829						 size_t dev_pw_len)
830{
831	struct wps_uuid_pin *pin, *prev;
832
833	dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
834	{
835		if (dev_pw && pin->pin &&
836		    (dev_pw_len != pin->pin_len ||
837		     os_memcmp(dev_pw, pin->pin, dev_pw_len) != 0))
838			continue; /* different PIN */
839		if (pin->wildcard_uuid) {
840			wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
841				    pin->uuid, WPS_UUID_LEN);
842			wps_registrar_remove_pin(reg, pin);
843			return 0;
844		}
845	}
846
847	return -1;
848}
849
850
851/**
852 * wps_registrar_invalidate_pin - Invalidate a PIN for a specific UUID-E
853 * @reg: Registrar data from wps_registrar_init()
854 * @uuid: UUID-E
855 * Returns: 0 on success, -1 on failure (e.g., PIN not found)
856 */
857int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid)
858{
859	struct wps_uuid_pin *pin, *prev;
860
861	dl_list_for_each_safe(pin, prev, &reg->pins, struct wps_uuid_pin, list)
862	{
863		if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
864			wpa_hexdump(MSG_DEBUG, "WPS: Invalidated PIN for UUID",
865				    pin->uuid, WPS_UUID_LEN);
866			wps_registrar_remove_pin(reg, pin);
867			return 0;
868		}
869	}
870
871	return -1;
872}
873
874
875static const u8 * wps_registrar_get_pin(struct wps_registrar *reg,
876					const u8 *uuid, size_t *pin_len)
877{
878	struct wps_uuid_pin *pin, *found = NULL;
879
880	wps_registrar_expire_pins(reg);
881
882	dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
883		if (!pin->wildcard_uuid &&
884		    os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
885			found = pin;
886			break;
887		}
888	}
889
890	if (!found) {
891		/* Check for wildcard UUIDs since none of the UUID-specific
892		 * PINs matched */
893		dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
894			if (pin->wildcard_uuid == 1 ||
895			    pin->wildcard_uuid == 2) {
896				wpa_printf(MSG_DEBUG, "WPS: Found a wildcard "
897					   "PIN. Assigned it for this UUID-E");
898				pin->wildcard_uuid++;
899				os_memcpy(pin->uuid, uuid, WPS_UUID_LEN);
900				found = pin;
901				break;
902			}
903		}
904	}
905
906	if (!found)
907		return NULL;
908
909	/*
910	 * Lock the PIN to avoid attacks based on concurrent re-use of the PIN
911	 * that could otherwise avoid PIN invalidations.
912	 */
913	if (found->flags & PIN_LOCKED) {
914		wpa_printf(MSG_DEBUG, "WPS: Selected PIN locked - do not "
915			   "allow concurrent re-use");
916		return NULL;
917	}
918	*pin_len = found->pin_len;
919	found->flags |= PIN_LOCKED;
920	return found->pin;
921}
922
923
924/**
925 * wps_registrar_unlock_pin - Unlock a PIN for a specific UUID-E
926 * @reg: Registrar data from wps_registrar_init()
927 * @uuid: UUID-E
928 * Returns: 0 on success, -1 on failure
929 *
930 * PINs are locked to enforce only one concurrent use. This function unlocks a
931 * PIN to allow it to be used again. If the specified PIN was configured using
932 * a wildcard UUID, it will be removed instead of allowing multiple uses.
933 */
934int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid)
935{
936	struct wps_uuid_pin *pin;
937
938	dl_list_for_each(pin, &reg->pins, struct wps_uuid_pin, list) {
939		if (os_memcmp(pin->uuid, uuid, WPS_UUID_LEN) == 0) {
940			if (pin->wildcard_uuid == 3) {
941				wpa_printf(MSG_DEBUG, "WPS: Invalidating used "
942					   "wildcard PIN");
943				return wps_registrar_invalidate_pin(reg, uuid);
944			}
945			pin->flags &= ~PIN_LOCKED;
946			return 0;
947		}
948	}
949
950	return -1;
951}
952
953
954static void wps_registrar_stop_pbc(struct wps_registrar *reg)
955{
956	reg->selected_registrar = 0;
957	reg->pbc = 0;
958	os_memset(reg->p2p_dev_addr, 0, ETH_ALEN);
959	wps_registrar_remove_authorized_mac(reg,
960					    (u8 *) "\xff\xff\xff\xff\xff\xff");
961	wps_registrar_selected_registrar_changed(reg, 0);
962}
963
964
965static void wps_registrar_pbc_timeout(void *eloop_ctx, void *timeout_ctx)
966{
967	struct wps_registrar *reg = eloop_ctx;
968
969	wpa_printf(MSG_DEBUG, "WPS: PBC timed out - disable PBC mode");
970	wps_pbc_timeout_event(reg->wps);
971	wps_registrar_stop_pbc(reg);
972}
973
974
975/**
976 * wps_registrar_button_pushed - Notify Registrar that AP button was pushed
977 * @reg: Registrar data from wps_registrar_init()
978 * @p2p_dev_addr: Limit allowed PBC devices to the specified P2P device, %NULL
979 *	indicates no such filtering
980 * Returns: 0 on success, -1 on failure, -2 on session overlap
981 *
982 * This function is called on an AP when a push button is pushed to activate
983 * PBC mode. The PBC mode will be stopped after walk time (2 minutes) timeout
984 * or when a PBC registration is completed. If more than one Enrollee in active
985 * PBC mode has been detected during the monitor time (previous 2 minutes), the
986 * PBC mode is not activated and -2 is returned to indicate session overlap.
987 * This is skipped if a specific Enrollee is selected.
988 */
989int wps_registrar_button_pushed(struct wps_registrar *reg,
990				const u8 *p2p_dev_addr)
991{
992	if (p2p_dev_addr == NULL &&
993	    wps_registrar_pbc_overlap(reg, NULL, NULL)) {
994		wpa_printf(MSG_DEBUG, "WPS: PBC overlap - do not start PBC "
995			   "mode");
996		wps_pbc_overlap_event(reg->wps);
997		return -2;
998	}
999	wpa_printf(MSG_DEBUG, "WPS: Button pushed - PBC mode started");
1000	reg->force_pbc_overlap = 0;
1001	reg->selected_registrar = 1;
1002	reg->pbc = 1;
1003	if (p2p_dev_addr)
1004		os_memcpy(reg->p2p_dev_addr, p2p_dev_addr, ETH_ALEN);
1005	else
1006		os_memset(reg->p2p_dev_addr, 0, ETH_ALEN);
1007	wps_registrar_add_authorized_mac(reg,
1008					 (u8 *) "\xff\xff\xff\xff\xff\xff");
1009	wps_registrar_selected_registrar_changed(reg, 0);
1010
1011	wps_pbc_active_event(reg->wps);
1012	eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
1013	eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1014	eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wps_registrar_pbc_timeout,
1015			       reg, NULL);
1016	return 0;
1017}
1018
1019
1020static void wps_registrar_pbc_completed(struct wps_registrar *reg)
1021{
1022	wpa_printf(MSG_DEBUG, "WPS: PBC completed - stopping PBC mode");
1023	eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1024	wps_registrar_stop_pbc(reg);
1025	wps_pbc_disable_event(reg->wps);
1026}
1027
1028
1029static void wps_registrar_pin_completed(struct wps_registrar *reg)
1030{
1031	wpa_printf(MSG_DEBUG, "WPS: PIN completed using internal Registrar");
1032	eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
1033	reg->selected_registrar = 0;
1034	wps_registrar_selected_registrar_changed(reg, 0);
1035}
1036
1037
1038void wps_registrar_complete(struct wps_registrar *registrar, const u8 *uuid_e,
1039			    const u8 *dev_pw, size_t dev_pw_len)
1040{
1041	if (registrar->pbc) {
1042		wps_registrar_remove_pbc_session(registrar,
1043						 uuid_e, NULL);
1044		wps_registrar_pbc_completed(registrar);
1045		os_get_time(&registrar->pbc_ignore_start);
1046		os_memcpy(registrar->pbc_ignore_uuid, uuid_e, WPS_UUID_LEN);
1047	} else {
1048		wps_registrar_pin_completed(registrar);
1049	}
1050
1051	if (dev_pw &&
1052	    wps_registrar_invalidate_wildcard_pin(registrar, dev_pw,
1053						  dev_pw_len) == 0) {
1054		wpa_hexdump_key(MSG_DEBUG, "WPS: Invalidated wildcard PIN",
1055				dev_pw, dev_pw_len);
1056	}
1057}
1058
1059
1060int wps_registrar_wps_cancel(struct wps_registrar *reg)
1061{
1062	if (reg->pbc) {
1063		wpa_printf(MSG_DEBUG, "WPS: PBC is set - cancelling it");
1064		wps_registrar_pbc_timeout(reg, NULL);
1065		eloop_cancel_timeout(wps_registrar_pbc_timeout, reg, NULL);
1066		return 1;
1067	} else if (reg->selected_registrar) {
1068		/* PIN Method */
1069		wpa_printf(MSG_DEBUG, "WPS: PIN is set - cancelling it");
1070		wps_registrar_pin_completed(reg);
1071		wps_registrar_invalidate_wildcard_pin(reg, NULL, 0);
1072		return 1;
1073	}
1074	return 0;
1075}
1076
1077
1078/**
1079 * wps_registrar_probe_req_rx - Notify Registrar of Probe Request
1080 * @reg: Registrar data from wps_registrar_init()
1081 * @addr: MAC address of the Probe Request sender
1082 * @wps_data: WPS IE contents
1083 *
1084 * This function is called on an AP when a Probe Request with WPS IE is
1085 * received. This is used to track PBC mode use and to detect possible overlap
1086 * situation with other WPS APs.
1087 */
1088void wps_registrar_probe_req_rx(struct wps_registrar *reg, const u8 *addr,
1089				const struct wpabuf *wps_data,
1090				int p2p_wildcard)
1091{
1092	struct wps_parse_attr attr;
1093	int skip_add = 0;
1094
1095	wpa_hexdump_buf(MSG_MSGDUMP,
1096			"WPS: Probe Request with WPS data received",
1097			wps_data);
1098
1099	if (wps_parse_msg(wps_data, &attr) < 0)
1100		return;
1101
1102	if (attr.config_methods == NULL) {
1103		wpa_printf(MSG_DEBUG, "WPS: No Config Methods attribute in "
1104			   "Probe Request");
1105		return;
1106	}
1107
1108	if (attr.dev_password_id == NULL) {
1109		wpa_printf(MSG_DEBUG, "WPS: No Device Password Id attribute "
1110			   "in Probe Request");
1111		return;
1112	}
1113
1114	if (reg->enrollee_seen_cb && attr.uuid_e &&
1115	    attr.primary_dev_type && attr.request_type && !p2p_wildcard) {
1116		char *dev_name = NULL;
1117		if (attr.dev_name) {
1118			dev_name = os_zalloc(attr.dev_name_len + 1);
1119			if (dev_name) {
1120				os_memcpy(dev_name, attr.dev_name,
1121					  attr.dev_name_len);
1122			}
1123		}
1124		reg->enrollee_seen_cb(reg->cb_ctx, addr, attr.uuid_e,
1125				      attr.primary_dev_type,
1126				      WPA_GET_BE16(attr.config_methods),
1127				      WPA_GET_BE16(attr.dev_password_id),
1128				      *attr.request_type, dev_name);
1129		os_free(dev_name);
1130	}
1131
1132	if (WPA_GET_BE16(attr.dev_password_id) != DEV_PW_PUSHBUTTON)
1133		return; /* Not PBC */
1134
1135	wpa_printf(MSG_DEBUG, "WPS: Probe Request for PBC received from "
1136		   MACSTR, MAC2STR(addr));
1137	if (attr.uuid_e == NULL) {
1138		wpa_printf(MSG_DEBUG, "WPS: Invalid Probe Request WPS IE: No "
1139			   "UUID-E included");
1140		return;
1141	}
1142	wpa_hexdump(MSG_DEBUG, "WPS: UUID-E from Probe Request", attr.uuid_e,
1143		    WPS_UUID_LEN);
1144
1145#ifdef WPS_WORKAROUNDS
1146	if (reg->pbc_ignore_start.sec &&
1147	    os_memcmp(attr.uuid_e, reg->pbc_ignore_uuid, WPS_UUID_LEN) == 0) {
1148		struct os_time now, dur;
1149		os_get_time(&now);
1150		os_time_sub(&now, &reg->pbc_ignore_start, &dur);
1151		if (dur.sec >= 0 && dur.sec < 5) {
1152			wpa_printf(MSG_DEBUG, "WPS: Ignore PBC activation "
1153				   "based on Probe Request from the Enrollee "
1154				   "that just completed PBC provisioning");
1155			skip_add = 1;
1156		} else
1157			reg->pbc_ignore_start.sec = 0;
1158	}
1159#endif /* WPS_WORKAROUNDS */
1160
1161	if (!skip_add)
1162		wps_registrar_add_pbc_session(reg, addr, attr.uuid_e);
1163	if (wps_registrar_pbc_overlap(reg, addr, attr.uuid_e)) {
1164		wpa_printf(MSG_DEBUG, "WPS: PBC session overlap detected");
1165		reg->force_pbc_overlap = 1;
1166		wps_pbc_overlap_event(reg->wps);
1167	}
1168}
1169
1170
1171static int wps_cb_new_psk(struct wps_registrar *reg, const u8 *mac_addr,
1172			  const u8 *p2p_dev_addr, const u8 *psk, size_t psk_len)
1173{
1174	if (reg->new_psk_cb == NULL)
1175		return 0;
1176
1177	return reg->new_psk_cb(reg->cb_ctx, mac_addr, p2p_dev_addr, psk,
1178			       psk_len);
1179}
1180
1181
1182static void wps_cb_pin_needed(struct wps_registrar *reg, const u8 *uuid_e,
1183			      const struct wps_device_data *dev)
1184{
1185	if (reg->pin_needed_cb == NULL)
1186		return;
1187
1188	reg->pin_needed_cb(reg->cb_ctx, uuid_e, dev);
1189}
1190
1191
1192static void wps_cb_reg_success(struct wps_registrar *reg, const u8 *mac_addr,
1193			       const u8 *uuid_e, const u8 *dev_pw,
1194			       size_t dev_pw_len)
1195{
1196	if (reg->reg_success_cb == NULL)
1197		return;
1198
1199	reg->reg_success_cb(reg->cb_ctx, mac_addr, uuid_e, dev_pw, dev_pw_len);
1200}
1201
1202
1203static int wps_cb_set_ie(struct wps_registrar *reg, struct wpabuf *beacon_ie,
1204			 struct wpabuf *probe_resp_ie)
1205{
1206	return reg->set_ie_cb(reg->cb_ctx, beacon_ie, probe_resp_ie);
1207}
1208
1209
1210static void wps_cb_set_sel_reg(struct wps_registrar *reg)
1211{
1212	u16 methods = 0;
1213	if (reg->set_sel_reg_cb == NULL)
1214		return;
1215
1216	if (reg->selected_registrar) {
1217		methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
1218#ifdef CONFIG_WPS2
1219		methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
1220			     WPS_CONFIG_PHY_PUSHBUTTON);
1221#endif /* CONFIG_WPS2 */
1222		if (reg->pbc)
1223			wps_set_pushbutton(&methods, reg->wps->config_methods);
1224	}
1225
1226	wpa_printf(MSG_DEBUG, "WPS: wps_cb_set_sel_reg: sel_reg=%d "
1227		   "config_methods=0x%x pbc=%d methods=0x%x",
1228		   reg->selected_registrar, reg->wps->config_methods,
1229		   reg->pbc, methods);
1230
1231	reg->set_sel_reg_cb(reg->cb_ctx, reg->selected_registrar,
1232			    reg->pbc ? DEV_PW_PUSHBUTTON : DEV_PW_DEFAULT,
1233			    methods);
1234}
1235
1236
1237static int wps_set_ie(struct wps_registrar *reg)
1238{
1239	struct wpabuf *beacon;
1240	struct wpabuf *probe;
1241	const u8 *auth_macs;
1242	size_t count;
1243	size_t vendor_len = 0;
1244	int i;
1245
1246	if (reg->set_ie_cb == NULL)
1247		return 0;
1248
1249	for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
1250		if (reg->wps->dev.vendor_ext[i]) {
1251			vendor_len += 2 + 2;
1252			vendor_len += wpabuf_len(reg->wps->dev.vendor_ext[i]);
1253		}
1254	}
1255
1256	beacon = wpabuf_alloc(400 + vendor_len);
1257	if (beacon == NULL)
1258		return -1;
1259	probe = wpabuf_alloc(500 + vendor_len);
1260	if (probe == NULL) {
1261		wpabuf_free(beacon);
1262		return -1;
1263	}
1264
1265	auth_macs = wps_authorized_macs(reg, &count);
1266
1267	wpa_printf(MSG_DEBUG, "WPS: Build Beacon IEs");
1268
1269	if (wps_build_version(beacon) ||
1270	    wps_build_wps_state(reg->wps, beacon) ||
1271	    wps_build_ap_setup_locked(reg->wps, beacon) ||
1272	    wps_build_selected_registrar(reg, beacon) ||
1273	    wps_build_sel_reg_dev_password_id(reg, beacon) ||
1274	    wps_build_sel_reg_config_methods(reg, beacon) ||
1275	    wps_build_sel_pbc_reg_uuid_e(reg, beacon) ||
1276	    (reg->dualband && wps_build_rf_bands(&reg->wps->dev, beacon, 0)) ||
1277	    wps_build_wfa_ext(beacon, 0, auth_macs, count) ||
1278	    wps_build_vendor_ext(&reg->wps->dev, beacon)) {
1279		wpabuf_free(beacon);
1280		wpabuf_free(probe);
1281		return -1;
1282	}
1283
1284#ifdef CONFIG_P2P
1285	if (wps_build_dev_name(&reg->wps->dev, beacon) ||
1286	    wps_build_primary_dev_type(&reg->wps->dev, beacon)) {
1287		wpabuf_free(beacon);
1288		wpabuf_free(probe);
1289		return -1;
1290	}
1291#endif /* CONFIG_P2P */
1292
1293	wpa_printf(MSG_DEBUG, "WPS: Build Probe Response IEs");
1294
1295	if (wps_build_version(probe) ||
1296	    wps_build_wps_state(reg->wps, probe) ||
1297	    wps_build_ap_setup_locked(reg->wps, probe) ||
1298	    wps_build_selected_registrar(reg, probe) ||
1299	    wps_build_sel_reg_dev_password_id(reg, probe) ||
1300	    wps_build_sel_reg_config_methods(reg, probe) ||
1301	    wps_build_resp_type(probe, reg->wps->ap ? WPS_RESP_AP :
1302				WPS_RESP_REGISTRAR) ||
1303	    wps_build_uuid_e(probe, reg->wps->uuid) ||
1304	    wps_build_device_attrs(&reg->wps->dev, probe) ||
1305	    wps_build_probe_config_methods(reg, probe) ||
1306	    (reg->dualband && wps_build_rf_bands(&reg->wps->dev, probe, 0)) ||
1307	    wps_build_wfa_ext(probe, 0, auth_macs, count) ||
1308	    wps_build_vendor_ext(&reg->wps->dev, probe)) {
1309		wpabuf_free(beacon);
1310		wpabuf_free(probe);
1311		return -1;
1312	}
1313
1314	beacon = wps_ie_encapsulate(beacon);
1315	probe = wps_ie_encapsulate(probe);
1316
1317	if (!beacon || !probe) {
1318		wpabuf_free(beacon);
1319		wpabuf_free(probe);
1320		return -1;
1321	}
1322
1323	if (reg->static_wep_only) {
1324		/*
1325		 * Windows XP and Vista clients can get confused about
1326		 * EAP-Identity/Request when they probe the network with
1327		 * EAPOL-Start. In such a case, they may assume the network is
1328		 * using IEEE 802.1X and prompt user for a certificate while
1329		 * the correct (non-WPS) behavior would be to ask for the
1330		 * static WEP key. As a workaround, use Microsoft Provisioning
1331		 * IE to advertise that legacy 802.1X is not supported.
1332		 */
1333		const u8 ms_wps[7] = {
1334			WLAN_EID_VENDOR_SPECIFIC, 5,
1335			/* Microsoft Provisioning IE (00:50:f2:5) */
1336			0x00, 0x50, 0xf2, 5,
1337			0x00 /* no legacy 802.1X or MS WPS */
1338		};
1339		wpa_printf(MSG_DEBUG, "WPS: Add Microsoft Provisioning IE "
1340			   "into Beacon/Probe Response frames");
1341		wpabuf_put_data(beacon, ms_wps, sizeof(ms_wps));
1342		wpabuf_put_data(probe, ms_wps, sizeof(ms_wps));
1343	}
1344
1345	return wps_cb_set_ie(reg, beacon, probe);
1346}
1347
1348
1349static int wps_get_dev_password(struct wps_data *wps)
1350{
1351	const u8 *pin;
1352	size_t pin_len = 0;
1353
1354	os_free(wps->dev_password);
1355	wps->dev_password = NULL;
1356
1357	if (wps->pbc) {
1358		wpa_printf(MSG_DEBUG, "WPS: Use default PIN for PBC");
1359		pin = (const u8 *) "00000000";
1360		pin_len = 8;
1361#ifdef CONFIG_WPS_NFC
1362	} else if (wps->nfc_pw_token) {
1363		wpa_printf(MSG_DEBUG, "WPS: Use OOB Device Password from NFC "
1364			   "Password Token");
1365		pin = wps->nfc_pw_token->dev_pw;
1366		pin_len = wps->nfc_pw_token->dev_pw_len;
1367#endif /* CONFIG_WPS_NFC */
1368	} else {
1369		pin = wps_registrar_get_pin(wps->wps->registrar, wps->uuid_e,
1370					    &pin_len);
1371		if (pin && wps->dev_pw_id >= 0x10) {
1372			wpa_printf(MSG_DEBUG, "WPS: No match for OOB Device "
1373				   "Password ID, but PIN found");
1374			/*
1375			 * See whether Enrollee is willing to use PIN instead.
1376			 */
1377			wps->dev_pw_id = DEV_PW_DEFAULT;
1378		}
1379	}
1380	if (pin == NULL) {
1381		wpa_printf(MSG_DEBUG, "WPS: No Device Password available for "
1382			   "the Enrollee");
1383		wps_cb_pin_needed(wps->wps->registrar, wps->uuid_e,
1384				  &wps->peer_dev);
1385		return -1;
1386	}
1387
1388	wps->dev_password = os_malloc(pin_len);
1389	if (wps->dev_password == NULL)
1390		return -1;
1391	os_memcpy(wps->dev_password, pin, pin_len);
1392	wps->dev_password_len = pin_len;
1393
1394	return 0;
1395}
1396
1397
1398static int wps_build_uuid_r(struct wps_data *wps, struct wpabuf *msg)
1399{
1400	wpa_printf(MSG_DEBUG, "WPS:  * UUID-R");
1401	wpabuf_put_be16(msg, ATTR_UUID_R);
1402	wpabuf_put_be16(msg, WPS_UUID_LEN);
1403	wpabuf_put_data(msg, wps->uuid_r, WPS_UUID_LEN);
1404	return 0;
1405}
1406
1407
1408static int wps_build_r_hash(struct wps_data *wps, struct wpabuf *msg)
1409{
1410	u8 *hash;
1411	const u8 *addr[4];
1412	size_t len[4];
1413
1414	if (random_get_bytes(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
1415		return -1;
1416	wpa_hexdump(MSG_DEBUG, "WPS: R-S1", wps->snonce, WPS_SECRET_NONCE_LEN);
1417	wpa_hexdump(MSG_DEBUG, "WPS: R-S2",
1418		    wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN);
1419
1420	if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) {
1421		wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for "
1422			   "R-Hash derivation");
1423		return -1;
1424	}
1425
1426	wpa_printf(MSG_DEBUG, "WPS:  * R-Hash1");
1427	wpabuf_put_be16(msg, ATTR_R_HASH1);
1428	wpabuf_put_be16(msg, SHA256_MAC_LEN);
1429	hash = wpabuf_put(msg, SHA256_MAC_LEN);
1430	/* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */
1431	addr[0] = wps->snonce;
1432	len[0] = WPS_SECRET_NONCE_LEN;
1433	addr[1] = wps->psk1;
1434	len[1] = WPS_PSK_LEN;
1435	addr[2] = wpabuf_head(wps->dh_pubkey_e);
1436	len[2] = wpabuf_len(wps->dh_pubkey_e);
1437	addr[3] = wpabuf_head(wps->dh_pubkey_r);
1438	len[3] = wpabuf_len(wps->dh_pubkey_r);
1439	hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1440	wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", hash, SHA256_MAC_LEN);
1441
1442	wpa_printf(MSG_DEBUG, "WPS:  * R-Hash2");
1443	wpabuf_put_be16(msg, ATTR_R_HASH2);
1444	wpabuf_put_be16(msg, SHA256_MAC_LEN);
1445	hash = wpabuf_put(msg, SHA256_MAC_LEN);
1446	/* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */
1447	addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN;
1448	addr[1] = wps->psk2;
1449	hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
1450	wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", hash, SHA256_MAC_LEN);
1451
1452	return 0;
1453}
1454
1455
1456static int wps_build_r_snonce1(struct wps_data *wps, struct wpabuf *msg)
1457{
1458	wpa_printf(MSG_DEBUG, "WPS:  * R-SNonce1");
1459	wpabuf_put_be16(msg, ATTR_R_SNONCE1);
1460	wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1461	wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN);
1462	return 0;
1463}
1464
1465
1466static int wps_build_r_snonce2(struct wps_data *wps, struct wpabuf *msg)
1467{
1468	wpa_printf(MSG_DEBUG, "WPS:  * R-SNonce2");
1469	wpabuf_put_be16(msg, ATTR_R_SNONCE2);
1470	wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
1471	wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN,
1472			WPS_SECRET_NONCE_LEN);
1473	return 0;
1474}
1475
1476
1477static int wps_build_cred_network_idx(struct wpabuf *msg,
1478				      const struct wps_credential *cred)
1479{
1480	wpa_printf(MSG_DEBUG, "WPS:  * Network Index (1)");
1481	wpabuf_put_be16(msg, ATTR_NETWORK_INDEX);
1482	wpabuf_put_be16(msg, 1);
1483	wpabuf_put_u8(msg, 1);
1484	return 0;
1485}
1486
1487
1488static int wps_build_cred_ssid(struct wpabuf *msg,
1489			       const struct wps_credential *cred)
1490{
1491	wpa_printf(MSG_DEBUG, "WPS:  * SSID");
1492	wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID for Credential",
1493			  cred->ssid, cred->ssid_len);
1494	wpabuf_put_be16(msg, ATTR_SSID);
1495	wpabuf_put_be16(msg, cred->ssid_len);
1496	wpabuf_put_data(msg, cred->ssid, cred->ssid_len);
1497	return 0;
1498}
1499
1500
1501static int wps_build_cred_auth_type(struct wpabuf *msg,
1502				    const struct wps_credential *cred)
1503{
1504	wpa_printf(MSG_DEBUG, "WPS:  * Authentication Type (0x%x)",
1505		   cred->auth_type);
1506	wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
1507	wpabuf_put_be16(msg, 2);
1508	wpabuf_put_be16(msg, cred->auth_type);
1509	return 0;
1510}
1511
1512
1513static int wps_build_cred_encr_type(struct wpabuf *msg,
1514				    const struct wps_credential *cred)
1515{
1516	wpa_printf(MSG_DEBUG, "WPS:  * Encryption Type (0x%x)",
1517		   cred->encr_type);
1518	wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
1519	wpabuf_put_be16(msg, 2);
1520	wpabuf_put_be16(msg, cred->encr_type);
1521	return 0;
1522}
1523
1524
1525static int wps_build_cred_network_key(struct wpabuf *msg,
1526				      const struct wps_credential *cred)
1527{
1528	wpa_printf(MSG_DEBUG, "WPS:  * Network Key (len=%d)",
1529		   (int) cred->key_len);
1530	wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
1531			cred->key, cred->key_len);
1532	wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
1533	wpabuf_put_be16(msg, cred->key_len);
1534	wpabuf_put_data(msg, cred->key, cred->key_len);
1535	return 0;
1536}
1537
1538
1539static int wps_build_credential(struct wpabuf *msg,
1540				const struct wps_credential *cred)
1541{
1542	if (wps_build_cred_network_idx(msg, cred) ||
1543	    wps_build_cred_ssid(msg, cred) ||
1544	    wps_build_cred_auth_type(msg, cred) ||
1545	    wps_build_cred_encr_type(msg, cred) ||
1546	    wps_build_cred_network_key(msg, cred) ||
1547	    wps_build_mac_addr(msg, cred->mac_addr))
1548		return -1;
1549	return 0;
1550}
1551
1552
1553int wps_build_credential_wrap(struct wpabuf *msg,
1554			      const struct wps_credential *cred)
1555{
1556	struct wpabuf *wbuf;
1557	wbuf = wpabuf_alloc(200);
1558	if (wbuf == NULL)
1559		return -1;
1560	if (wps_build_credential(wbuf, cred)) {
1561		wpabuf_free(wbuf);
1562		return -1;
1563	}
1564	wpabuf_put_be16(msg, ATTR_CRED);
1565	wpabuf_put_be16(msg, wpabuf_len(wbuf));
1566	wpabuf_put_buf(msg, wbuf);
1567	wpabuf_free(wbuf);
1568	return 0;
1569}
1570
1571
1572int wps_build_cred(struct wps_data *wps, struct wpabuf *msg)
1573{
1574	struct wpabuf *cred;
1575
1576	if (wps->wps->registrar->skip_cred_build)
1577		goto skip_cred_build;
1578
1579	wpa_printf(MSG_DEBUG, "WPS:  * Credential");
1580	if (wps->use_cred) {
1581		os_memcpy(&wps->cred, wps->use_cred, sizeof(wps->cred));
1582		goto use_provided;
1583	}
1584	os_memset(&wps->cred, 0, sizeof(wps->cred));
1585
1586	os_memcpy(wps->cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
1587	wps->cred.ssid_len = wps->wps->ssid_len;
1588
1589	/* Select the best authentication and encryption type */
1590	if (wps->auth_type & WPS_AUTH_WPA2PSK)
1591		wps->auth_type = WPS_AUTH_WPA2PSK;
1592	else if (wps->auth_type & WPS_AUTH_WPAPSK)
1593		wps->auth_type = WPS_AUTH_WPAPSK;
1594	else if (wps->auth_type & WPS_AUTH_OPEN)
1595		wps->auth_type = WPS_AUTH_OPEN;
1596	else if (wps->auth_type & WPS_AUTH_SHARED)
1597		wps->auth_type = WPS_AUTH_SHARED;
1598	else {
1599		wpa_printf(MSG_DEBUG, "WPS: Unsupported auth_type 0x%x",
1600			   wps->auth_type);
1601		return -1;
1602	}
1603	wps->cred.auth_type = wps->auth_type;
1604
1605	if (wps->auth_type == WPS_AUTH_WPA2PSK ||
1606	    wps->auth_type == WPS_AUTH_WPAPSK) {
1607		if (wps->encr_type & WPS_ENCR_AES)
1608			wps->encr_type = WPS_ENCR_AES;
1609		else if (wps->encr_type & WPS_ENCR_TKIP)
1610			wps->encr_type = WPS_ENCR_TKIP;
1611		else {
1612			wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1613				   "type for WPA/WPA2");
1614			return -1;
1615		}
1616	} else {
1617		if (wps->encr_type & WPS_ENCR_WEP)
1618			wps->encr_type = WPS_ENCR_WEP;
1619		else if (wps->encr_type & WPS_ENCR_NONE)
1620			wps->encr_type = WPS_ENCR_NONE;
1621		else {
1622			wpa_printf(MSG_DEBUG, "WPS: No suitable encryption "
1623				   "type for non-WPA/WPA2 mode");
1624			return -1;
1625		}
1626	}
1627	wps->cred.encr_type = wps->encr_type;
1628	/*
1629	 * Set MAC address in the Credential to be the Enrollee's MAC address
1630	 */
1631	os_memcpy(wps->cred.mac_addr, wps->mac_addr_e, ETH_ALEN);
1632
1633	if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->wps->ap &&
1634	    !wps->wps->registrar->disable_auto_conf) {
1635		u8 r[16];
1636		/* Generate a random passphrase */
1637		if (random_get_bytes(r, sizeof(r)) < 0)
1638			return -1;
1639		os_free(wps->new_psk);
1640		wps->new_psk = base64_encode(r, sizeof(r), &wps->new_psk_len);
1641		if (wps->new_psk == NULL)
1642			return -1;
1643		wps->new_psk_len--; /* remove newline */
1644		while (wps->new_psk_len &&
1645		       wps->new_psk[wps->new_psk_len - 1] == '=')
1646			wps->new_psk_len--;
1647		wpa_hexdump_ascii_key(MSG_DEBUG, "WPS: Generated passphrase",
1648				      wps->new_psk, wps->new_psk_len);
1649		os_memcpy(wps->cred.key, wps->new_psk, wps->new_psk_len);
1650		wps->cred.key_len = wps->new_psk_len;
1651	} else if (!wps->wps->registrar->force_per_enrollee_psk &&
1652		   wps->use_psk_key && wps->wps->psk_set) {
1653		char hex[65];
1654		wpa_printf(MSG_DEBUG, "WPS: Use PSK format for Network Key");
1655		wpa_snprintf_hex(hex, sizeof(hex), wps->wps->psk, 32);
1656		os_memcpy(wps->cred.key, hex, 32 * 2);
1657		wps->cred.key_len = 32 * 2;
1658	} else if (!wps->wps->registrar->force_per_enrollee_psk &&
1659		   wps->wps->network_key) {
1660		os_memcpy(wps->cred.key, wps->wps->network_key,
1661			  wps->wps->network_key_len);
1662		wps->cred.key_len = wps->wps->network_key_len;
1663	} else if (wps->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
1664		char hex[65];
1665		/* Generate a random per-device PSK */
1666		os_free(wps->new_psk);
1667		wps->new_psk_len = 32;
1668		wps->new_psk = os_malloc(wps->new_psk_len);
1669		if (wps->new_psk == NULL)
1670			return -1;
1671		if (random_get_bytes(wps->new_psk, wps->new_psk_len) < 0) {
1672			os_free(wps->new_psk);
1673			wps->new_psk = NULL;
1674			return -1;
1675		}
1676		wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK",
1677				wps->new_psk, wps->new_psk_len);
1678		wpa_snprintf_hex(hex, sizeof(hex), wps->new_psk,
1679				 wps->new_psk_len);
1680		os_memcpy(wps->cred.key, hex, wps->new_psk_len * 2);
1681		wps->cred.key_len = wps->new_psk_len * 2;
1682	}
1683
1684use_provided:
1685#ifdef CONFIG_WPS_TESTING
1686	if (wps_testing_dummy_cred)
1687		cred = wpabuf_alloc(200);
1688	else
1689		cred = NULL;
1690	if (cred) {
1691		struct wps_credential dummy;
1692		wpa_printf(MSG_DEBUG, "WPS: Add dummy credential");
1693		os_memset(&dummy, 0, sizeof(dummy));
1694		os_memcpy(dummy.ssid, "dummy", 5);
1695		dummy.ssid_len = 5;
1696		dummy.auth_type = WPS_AUTH_WPA2PSK;
1697		dummy.encr_type = WPS_ENCR_AES;
1698		os_memcpy(dummy.key, "dummy psk", 9);
1699		dummy.key_len = 9;
1700		os_memcpy(dummy.mac_addr, wps->mac_addr_e, ETH_ALEN);
1701		wps_build_credential(cred, &dummy);
1702		wpa_hexdump_buf(MSG_DEBUG, "WPS: Dummy Credential", cred);
1703
1704		wpabuf_put_be16(msg, ATTR_CRED);
1705		wpabuf_put_be16(msg, wpabuf_len(cred));
1706		wpabuf_put_buf(msg, cred);
1707
1708		wpabuf_free(cred);
1709	}
1710#endif /* CONFIG_WPS_TESTING */
1711
1712	cred = wpabuf_alloc(200);
1713	if (cred == NULL)
1714		return -1;
1715
1716	if (wps_build_credential(cred, &wps->cred)) {
1717		wpabuf_free(cred);
1718		return -1;
1719	}
1720
1721	wpabuf_put_be16(msg, ATTR_CRED);
1722	wpabuf_put_be16(msg, wpabuf_len(cred));
1723	wpabuf_put_buf(msg, cred);
1724	wpabuf_free(cred);
1725
1726skip_cred_build:
1727	if (wps->wps->registrar->extra_cred) {
1728		wpa_printf(MSG_DEBUG, "WPS:  * Credential (pre-configured)");
1729		wpabuf_put_buf(msg, wps->wps->registrar->extra_cred);
1730	}
1731
1732	return 0;
1733}
1734
1735
1736static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *msg)
1737{
1738	wpa_printf(MSG_DEBUG, "WPS:  * AP Settings");
1739
1740	if (wps_build_credential(msg, &wps->cred))
1741		return -1;
1742
1743	return 0;
1744}
1745
1746
1747static struct wpabuf * wps_build_ap_cred(struct wps_data *wps)
1748{
1749	struct wpabuf *msg, *plain;
1750
1751	msg = wpabuf_alloc(1000);
1752	if (msg == NULL)
1753		return NULL;
1754
1755	plain = wpabuf_alloc(200);
1756	if (plain == NULL) {
1757		wpabuf_free(msg);
1758		return NULL;
1759	}
1760
1761	if (wps_build_ap_settings(wps, plain)) {
1762		wpabuf_free(plain);
1763		wpabuf_free(msg);
1764		return NULL;
1765	}
1766
1767	wpabuf_put_be16(msg, ATTR_CRED);
1768	wpabuf_put_be16(msg, wpabuf_len(plain));
1769	wpabuf_put_buf(msg, plain);
1770	wpabuf_free(plain);
1771
1772	return msg;
1773}
1774
1775
1776static struct wpabuf * wps_build_m2(struct wps_data *wps)
1777{
1778	struct wpabuf *msg;
1779
1780	if (random_get_bytes(wps->nonce_r, WPS_NONCE_LEN) < 0)
1781		return NULL;
1782	wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce",
1783		    wps->nonce_r, WPS_NONCE_LEN);
1784	wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN);
1785
1786	wpa_printf(MSG_DEBUG, "WPS: Building Message M2");
1787	msg = wpabuf_alloc(1000);
1788	if (msg == NULL)
1789		return NULL;
1790
1791	if (wps_build_version(msg) ||
1792	    wps_build_msg_type(msg, WPS_M2) ||
1793	    wps_build_enrollee_nonce(wps, msg) ||
1794	    wps_build_registrar_nonce(wps, msg) ||
1795	    wps_build_uuid_r(wps, msg) ||
1796	    wps_build_public_key(wps, msg) ||
1797	    wps_derive_keys(wps) ||
1798	    wps_build_auth_type_flags(wps, msg) ||
1799	    wps_build_encr_type_flags(wps, msg) ||
1800	    wps_build_conn_type_flags(wps, msg) ||
1801	    wps_build_config_methods_r(wps->wps->registrar, msg) ||
1802	    wps_build_device_attrs(&wps->wps->dev, msg) ||
1803	    wps_build_rf_bands(&wps->wps->dev, msg,
1804			       wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
1805	    wps_build_assoc_state(wps, msg) ||
1806	    wps_build_config_error(msg, WPS_CFG_NO_ERROR) ||
1807	    wps_build_dev_password_id(msg, wps->dev_pw_id) ||
1808	    wps_build_os_version(&wps->wps->dev, msg) ||
1809	    wps_build_wfa_ext(msg, 0, NULL, 0) ||
1810	    wps_build_authenticator(wps, msg)) {
1811		wpabuf_free(msg);
1812		return NULL;
1813	}
1814
1815	wps->int_reg = 1;
1816	wps->state = RECV_M3;
1817	return msg;
1818}
1819
1820
1821static struct wpabuf * wps_build_m2d(struct wps_data *wps)
1822{
1823	struct wpabuf *msg;
1824	u16 err = wps->config_error;
1825
1826	wpa_printf(MSG_DEBUG, "WPS: Building Message M2D");
1827	msg = wpabuf_alloc(1000);
1828	if (msg == NULL)
1829		return NULL;
1830
1831	if (wps->wps->ap && wps->wps->ap_setup_locked &&
1832	    err == WPS_CFG_NO_ERROR)
1833		err = WPS_CFG_SETUP_LOCKED;
1834
1835	if (wps_build_version(msg) ||
1836	    wps_build_msg_type(msg, WPS_M2D) ||
1837	    wps_build_enrollee_nonce(wps, msg) ||
1838	    wps_build_registrar_nonce(wps, msg) ||
1839	    wps_build_uuid_r(wps, msg) ||
1840	    wps_build_auth_type_flags(wps, msg) ||
1841	    wps_build_encr_type_flags(wps, msg) ||
1842	    wps_build_conn_type_flags(wps, msg) ||
1843	    wps_build_config_methods_r(wps->wps->registrar, msg) ||
1844	    wps_build_device_attrs(&wps->wps->dev, msg) ||
1845	    wps_build_rf_bands(&wps->wps->dev, msg,
1846			       wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
1847	    wps_build_assoc_state(wps, msg) ||
1848	    wps_build_config_error(msg, err) ||
1849	    wps_build_os_version(&wps->wps->dev, msg) ||
1850	    wps_build_wfa_ext(msg, 0, NULL, 0)) {
1851		wpabuf_free(msg);
1852		return NULL;
1853	}
1854
1855	wps->state = RECV_M2D_ACK;
1856	return msg;
1857}
1858
1859
1860static struct wpabuf * wps_build_m4(struct wps_data *wps)
1861{
1862	struct wpabuf *msg, *plain;
1863
1864	wpa_printf(MSG_DEBUG, "WPS: Building Message M4");
1865
1866	wps_derive_psk(wps, wps->dev_password, wps->dev_password_len);
1867
1868	plain = wpabuf_alloc(200);
1869	if (plain == NULL)
1870		return NULL;
1871
1872	msg = wpabuf_alloc(1000);
1873	if (msg == NULL) {
1874		wpabuf_free(plain);
1875		return NULL;
1876	}
1877
1878	if (wps_build_version(msg) ||
1879	    wps_build_msg_type(msg, WPS_M4) ||
1880	    wps_build_enrollee_nonce(wps, msg) ||
1881	    wps_build_r_hash(wps, msg) ||
1882	    wps_build_r_snonce1(wps, plain) ||
1883	    wps_build_key_wrap_auth(wps, plain) ||
1884	    wps_build_encr_settings(wps, msg, plain) ||
1885	    wps_build_wfa_ext(msg, 0, NULL, 0) ||
1886	    wps_build_authenticator(wps, msg)) {
1887		wpabuf_free(plain);
1888		wpabuf_free(msg);
1889		return NULL;
1890	}
1891	wpabuf_free(plain);
1892
1893	wps->state = RECV_M5;
1894	return msg;
1895}
1896
1897
1898static struct wpabuf * wps_build_m6(struct wps_data *wps)
1899{
1900	struct wpabuf *msg, *plain;
1901
1902	wpa_printf(MSG_DEBUG, "WPS: Building Message M6");
1903
1904	plain = wpabuf_alloc(200);
1905	if (plain == NULL)
1906		return NULL;
1907
1908	msg = wpabuf_alloc(1000);
1909	if (msg == NULL) {
1910		wpabuf_free(plain);
1911		return NULL;
1912	}
1913
1914	if (wps_build_version(msg) ||
1915	    wps_build_msg_type(msg, WPS_M6) ||
1916	    wps_build_enrollee_nonce(wps, msg) ||
1917	    wps_build_r_snonce2(wps, plain) ||
1918	    wps_build_key_wrap_auth(wps, plain) ||
1919	    wps_build_encr_settings(wps, msg, plain) ||
1920	    wps_build_wfa_ext(msg, 0, NULL, 0) ||
1921	    wps_build_authenticator(wps, msg)) {
1922		wpabuf_free(plain);
1923		wpabuf_free(msg);
1924		return NULL;
1925	}
1926	wpabuf_free(plain);
1927
1928	wps->wps_pin_revealed = 1;
1929	wps->state = RECV_M7;
1930	return msg;
1931}
1932
1933
1934static struct wpabuf * wps_build_m8(struct wps_data *wps)
1935{
1936	struct wpabuf *msg, *plain;
1937
1938	wpa_printf(MSG_DEBUG, "WPS: Building Message M8");
1939
1940	plain = wpabuf_alloc(500);
1941	if (plain == NULL)
1942		return NULL;
1943
1944	msg = wpabuf_alloc(1000);
1945	if (msg == NULL) {
1946		wpabuf_free(plain);
1947		return NULL;
1948	}
1949
1950	if (wps_build_version(msg) ||
1951	    wps_build_msg_type(msg, WPS_M8) ||
1952	    wps_build_enrollee_nonce(wps, msg) ||
1953	    ((wps->wps->ap || wps->er) && wps_build_cred(wps, plain)) ||
1954	    (!wps->wps->ap && !wps->er && wps_build_ap_settings(wps, plain)) ||
1955	    wps_build_key_wrap_auth(wps, plain) ||
1956	    wps_build_encr_settings(wps, msg, plain) ||
1957	    wps_build_wfa_ext(msg, 0, NULL, 0) ||
1958	    wps_build_authenticator(wps, msg)) {
1959		wpabuf_free(plain);
1960		wpabuf_free(msg);
1961		return NULL;
1962	}
1963	wpabuf_free(plain);
1964
1965	wps->state = RECV_DONE;
1966	return msg;
1967}
1968
1969
1970struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
1971				      enum wsc_op_code *op_code)
1972{
1973	struct wpabuf *msg;
1974
1975#ifdef CONFIG_WPS_UPNP
1976	if (!wps->int_reg && wps->wps->wps_upnp) {
1977		struct upnp_pending_message *p, *prev = NULL;
1978		if (wps->ext_reg > 1)
1979			wps_registrar_free_pending_m2(wps->wps);
1980		p = wps->wps->upnp_msgs;
1981		/* TODO: check pending message MAC address */
1982		while (p && p->next) {
1983			prev = p;
1984			p = p->next;
1985		}
1986		if (p) {
1987			wpa_printf(MSG_DEBUG, "WPS: Use pending message from "
1988				   "UPnP");
1989			if (prev)
1990				prev->next = NULL;
1991			else
1992				wps->wps->upnp_msgs = NULL;
1993			msg = p->msg;
1994			switch (p->type) {
1995			case WPS_WSC_ACK:
1996				*op_code = WSC_ACK;
1997				break;
1998			case WPS_WSC_NACK:
1999				*op_code = WSC_NACK;
2000				break;
2001			default:
2002				*op_code = WSC_MSG;
2003				break;
2004			}
2005			os_free(p);
2006			if (wps->ext_reg == 0)
2007				wps->ext_reg = 1;
2008			return msg;
2009		}
2010	}
2011	if (wps->ext_reg) {
2012		wpa_printf(MSG_DEBUG, "WPS: Using external Registrar, but no "
2013			   "pending message available");
2014		return NULL;
2015	}
2016#endif /* CONFIG_WPS_UPNP */
2017
2018	switch (wps->state) {
2019	case SEND_M2:
2020		if (wps_get_dev_password(wps) < 0)
2021			msg = wps_build_m2d(wps);
2022		else
2023			msg = wps_build_m2(wps);
2024		*op_code = WSC_MSG;
2025		break;
2026	case SEND_M2D:
2027		msg = wps_build_m2d(wps);
2028		*op_code = WSC_MSG;
2029		break;
2030	case SEND_M4:
2031		msg = wps_build_m4(wps);
2032		*op_code = WSC_MSG;
2033		break;
2034	case SEND_M6:
2035		msg = wps_build_m6(wps);
2036		*op_code = WSC_MSG;
2037		break;
2038	case SEND_M8:
2039		msg = wps_build_m8(wps);
2040		*op_code = WSC_MSG;
2041		break;
2042	case RECV_DONE:
2043		msg = wps_build_wsc_ack(wps);
2044		*op_code = WSC_ACK;
2045		break;
2046	case SEND_WSC_NACK:
2047		msg = wps_build_wsc_nack(wps);
2048		*op_code = WSC_NACK;
2049		break;
2050	default:
2051		wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building "
2052			   "a message", wps->state);
2053		msg = NULL;
2054		break;
2055	}
2056
2057	if (*op_code == WSC_MSG && msg) {
2058		/* Save a copy of the last message for Authenticator derivation
2059		 */
2060		wpabuf_free(wps->last_msg);
2061		wps->last_msg = wpabuf_dup(msg);
2062	}
2063
2064	return msg;
2065}
2066
2067
2068static int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce)
2069{
2070	if (e_nonce == NULL) {
2071		wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received");
2072		return -1;
2073	}
2074
2075	os_memcpy(wps->nonce_e, e_nonce, WPS_NONCE_LEN);
2076	wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce",
2077		    wps->nonce_e, WPS_NONCE_LEN);
2078
2079	return 0;
2080}
2081
2082
2083static int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce)
2084{
2085	if (r_nonce == NULL) {
2086		wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received");
2087		return -1;
2088	}
2089
2090	if (os_memcmp(wps->nonce_r, r_nonce, WPS_NONCE_LEN) != 0) {
2091		wpa_printf(MSG_DEBUG, "WPS: Invalid Registrar Nonce received");
2092		return -1;
2093	}
2094
2095	return 0;
2096}
2097
2098
2099static int wps_process_uuid_e(struct wps_data *wps, const u8 *uuid_e)
2100{
2101	if (uuid_e == NULL) {
2102		wpa_printf(MSG_DEBUG, "WPS: No UUID-E received");
2103		return -1;
2104	}
2105
2106	os_memcpy(wps->uuid_e, uuid_e, WPS_UUID_LEN);
2107	wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", wps->uuid_e, WPS_UUID_LEN);
2108
2109	return 0;
2110}
2111
2112
2113static int wps_process_dev_password_id(struct wps_data *wps, const u8 *pw_id)
2114{
2115	if (pw_id == NULL) {
2116		wpa_printf(MSG_DEBUG, "WPS: No Device Password ID received");
2117		return -1;
2118	}
2119
2120	wps->dev_pw_id = WPA_GET_BE16(pw_id);
2121	wpa_printf(MSG_DEBUG, "WPS: Device Password ID %d", wps->dev_pw_id);
2122
2123	return 0;
2124}
2125
2126
2127static int wps_process_e_hash1(struct wps_data *wps, const u8 *e_hash1)
2128{
2129	if (e_hash1 == NULL) {
2130		wpa_printf(MSG_DEBUG, "WPS: No E-Hash1 received");
2131		return -1;
2132	}
2133
2134	os_memcpy(wps->peer_hash1, e_hash1, WPS_HASH_LEN);
2135	wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", wps->peer_hash1, WPS_HASH_LEN);
2136
2137	return 0;
2138}
2139
2140
2141static int wps_process_e_hash2(struct wps_data *wps, const u8 *e_hash2)
2142{
2143	if (e_hash2 == NULL) {
2144		wpa_printf(MSG_DEBUG, "WPS: No E-Hash2 received");
2145		return -1;
2146	}
2147
2148	os_memcpy(wps->peer_hash2, e_hash2, WPS_HASH_LEN);
2149	wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", wps->peer_hash2, WPS_HASH_LEN);
2150
2151	return 0;
2152}
2153
2154
2155static int wps_process_e_snonce1(struct wps_data *wps, const u8 *e_snonce1)
2156{
2157	u8 hash[SHA256_MAC_LEN];
2158	const u8 *addr[4];
2159	size_t len[4];
2160
2161	if (e_snonce1 == NULL) {
2162		wpa_printf(MSG_DEBUG, "WPS: No E-SNonce1 received");
2163		return -1;
2164	}
2165
2166	wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce1", e_snonce1,
2167			WPS_SECRET_NONCE_LEN);
2168
2169	/* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */
2170	addr[0] = e_snonce1;
2171	len[0] = WPS_SECRET_NONCE_LEN;
2172	addr[1] = wps->psk1;
2173	len[1] = WPS_PSK_LEN;
2174	addr[2] = wpabuf_head(wps->dh_pubkey_e);
2175	len[2] = wpabuf_len(wps->dh_pubkey_e);
2176	addr[3] = wpabuf_head(wps->dh_pubkey_r);
2177	len[3] = wpabuf_len(wps->dh_pubkey_r);
2178	hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
2179
2180	if (os_memcmp(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) {
2181		wpa_printf(MSG_DEBUG, "WPS: E-Hash1 derived from E-S1 does "
2182			   "not match with the pre-committed value");
2183		wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
2184		wps_pwd_auth_fail_event(wps->wps, 0, 1, wps->mac_addr_e);
2185		return -1;
2186	}
2187
2188	wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the first "
2189		   "half of the device password");
2190
2191	return 0;
2192}
2193
2194
2195static int wps_process_e_snonce2(struct wps_data *wps, const u8 *e_snonce2)
2196{
2197	u8 hash[SHA256_MAC_LEN];
2198	const u8 *addr[4];
2199	size_t len[4];
2200
2201	if (e_snonce2 == NULL) {
2202		wpa_printf(MSG_DEBUG, "WPS: No E-SNonce2 received");
2203		return -1;
2204	}
2205
2206	wpa_hexdump_key(MSG_DEBUG, "WPS: E-SNonce2", e_snonce2,
2207			WPS_SECRET_NONCE_LEN);
2208
2209	/* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */
2210	addr[0] = e_snonce2;
2211	len[0] = WPS_SECRET_NONCE_LEN;
2212	addr[1] = wps->psk2;
2213	len[1] = WPS_PSK_LEN;
2214	addr[2] = wpabuf_head(wps->dh_pubkey_e);
2215	len[2] = wpabuf_len(wps->dh_pubkey_e);
2216	addr[3] = wpabuf_head(wps->dh_pubkey_r);
2217	len[3] = wpabuf_len(wps->dh_pubkey_r);
2218	hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
2219
2220	if (os_memcmp(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) {
2221		wpa_printf(MSG_DEBUG, "WPS: E-Hash2 derived from E-S2 does "
2222			   "not match with the pre-committed value");
2223		wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2224		wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
2225		wps_pwd_auth_fail_event(wps->wps, 0, 2, wps->mac_addr_e);
2226		return -1;
2227	}
2228
2229	wpa_printf(MSG_DEBUG, "WPS: Enrollee proved knowledge of the second "
2230		   "half of the device password");
2231	wps->wps_pin_revealed = 0;
2232	wps_registrar_unlock_pin(wps->wps->registrar, wps->uuid_e);
2233
2234	/*
2235	 * In case wildcard PIN is used and WPS handshake succeeds in the first
2236	 * attempt, wps_registrar_unlock_pin() would not free the PIN, so make
2237	 * sure the PIN gets invalidated here.
2238	 */
2239	wps_registrar_invalidate_pin(wps->wps->registrar, wps->uuid_e);
2240
2241	return 0;
2242}
2243
2244
2245static int wps_process_mac_addr(struct wps_data *wps, const u8 *mac_addr)
2246{
2247	if (mac_addr == NULL) {
2248		wpa_printf(MSG_DEBUG, "WPS: No MAC Address received");
2249		return -1;
2250	}
2251
2252	wpa_printf(MSG_DEBUG, "WPS: Enrollee MAC Address " MACSTR,
2253		   MAC2STR(mac_addr));
2254	os_memcpy(wps->mac_addr_e, mac_addr, ETH_ALEN);
2255	os_memcpy(wps->peer_dev.mac_addr, mac_addr, ETH_ALEN);
2256
2257	return 0;
2258}
2259
2260
2261static int wps_process_pubkey(struct wps_data *wps, const u8 *pk,
2262			      size_t pk_len)
2263{
2264	if (pk == NULL || pk_len == 0) {
2265		wpa_printf(MSG_DEBUG, "WPS: No Public Key received");
2266		return -1;
2267	}
2268
2269	wpabuf_free(wps->dh_pubkey_e);
2270	wps->dh_pubkey_e = wpabuf_alloc_copy(pk, pk_len);
2271	if (wps->dh_pubkey_e == NULL)
2272		return -1;
2273
2274	return 0;
2275}
2276
2277
2278static int wps_process_auth_type_flags(struct wps_data *wps, const u8 *auth)
2279{
2280	u16 auth_types;
2281
2282	if (auth == NULL) {
2283		wpa_printf(MSG_DEBUG, "WPS: No Authentication Type flags "
2284			   "received");
2285		return -1;
2286	}
2287
2288	auth_types = WPA_GET_BE16(auth);
2289
2290	wpa_printf(MSG_DEBUG, "WPS: Enrollee Authentication Type flags 0x%x",
2291		   auth_types);
2292	wps->auth_type = wps->wps->auth_types & auth_types;
2293	if (wps->auth_type == 0) {
2294		wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2295			   "authentication types (own 0x%x Enrollee 0x%x)",
2296			   wps->wps->auth_types, auth_types);
2297#ifdef WPS_WORKAROUNDS
2298		/*
2299		 * Some deployed implementations seem to advertise incorrect
2300		 * information in this attribute. For example, Linksys WRT350N
2301		 * seems to have a byteorder bug that breaks this negotiation.
2302		 * In order to interoperate with existing implementations,
2303		 * assume that the Enrollee supports everything we do.
2304		 */
2305		wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2306			   "does not advertise supported authentication types "
2307			   "correctly");
2308		wps->auth_type = wps->wps->auth_types;
2309#else /* WPS_WORKAROUNDS */
2310		return -1;
2311#endif /* WPS_WORKAROUNDS */
2312	}
2313
2314	return 0;
2315}
2316
2317
2318static int wps_process_encr_type_flags(struct wps_data *wps, const u8 *encr)
2319{
2320	u16 encr_types;
2321
2322	if (encr == NULL) {
2323		wpa_printf(MSG_DEBUG, "WPS: No Encryption Type flags "
2324			   "received");
2325		return -1;
2326	}
2327
2328	encr_types = WPA_GET_BE16(encr);
2329
2330	wpa_printf(MSG_DEBUG, "WPS: Enrollee Encryption Type flags 0x%x",
2331		   encr_types);
2332	wps->encr_type = wps->wps->encr_types & encr_types;
2333	if (wps->encr_type == 0) {
2334		wpa_printf(MSG_DEBUG, "WPS: No match in supported "
2335			   "encryption types (own 0x%x Enrollee 0x%x)",
2336			   wps->wps->encr_types, encr_types);
2337#ifdef WPS_WORKAROUNDS
2338		/*
2339		 * Some deployed implementations seem to advertise incorrect
2340		 * information in this attribute. For example, Linksys WRT350N
2341		 * seems to have a byteorder bug that breaks this negotiation.
2342		 * In order to interoperate with existing implementations,
2343		 * assume that the Enrollee supports everything we do.
2344		 */
2345		wpa_printf(MSG_DEBUG, "WPS: Workaround - assume Enrollee "
2346			   "does not advertise supported encryption types "
2347			   "correctly");
2348		wps->encr_type = wps->wps->encr_types;
2349#else /* WPS_WORKAROUNDS */
2350		return -1;
2351#endif /* WPS_WORKAROUNDS */
2352	}
2353
2354	return 0;
2355}
2356
2357
2358static int wps_process_conn_type_flags(struct wps_data *wps, const u8 *conn)
2359{
2360	if (conn == NULL) {
2361		wpa_printf(MSG_DEBUG, "WPS: No Connection Type flags "
2362			   "received");
2363		return -1;
2364	}
2365
2366	wpa_printf(MSG_DEBUG, "WPS: Enrollee Connection Type flags 0x%x",
2367		   *conn);
2368
2369	return 0;
2370}
2371
2372
2373static int wps_process_config_methods(struct wps_data *wps, const u8 *methods)
2374{
2375	u16 m;
2376
2377	if (methods == NULL) {
2378		wpa_printf(MSG_DEBUG, "WPS: No Config Methods received");
2379		return -1;
2380	}
2381
2382	m = WPA_GET_BE16(methods);
2383
2384	wpa_printf(MSG_DEBUG, "WPS: Enrollee Config Methods 0x%x"
2385		   "%s%s%s%s%s%s%s%s%s", m,
2386		   m & WPS_CONFIG_USBA ? " [USBA]" : "",
2387		   m & WPS_CONFIG_ETHERNET ? " [Ethernet]" : "",
2388		   m & WPS_CONFIG_LABEL ? " [Label]" : "",
2389		   m & WPS_CONFIG_DISPLAY ? " [Display]" : "",
2390		   m & WPS_CONFIG_EXT_NFC_TOKEN ? " [Ext NFC Token]" : "",
2391		   m & WPS_CONFIG_INT_NFC_TOKEN ? " [Int NFC Token]" : "",
2392		   m & WPS_CONFIG_NFC_INTERFACE ? " [NFC]" : "",
2393		   m & WPS_CONFIG_PUSHBUTTON ? " [PBC]" : "",
2394		   m & WPS_CONFIG_KEYPAD ? " [Keypad]" : "");
2395
2396	if (!(m & WPS_CONFIG_DISPLAY) && !wps->use_psk_key) {
2397		/*
2398		 * The Enrollee does not have a display so it is unlikely to be
2399		 * able to show the passphrase to a user and as such, could
2400		 * benefit from receiving PSK to reduce key derivation time.
2401		 */
2402		wpa_printf(MSG_DEBUG, "WPS: Prefer PSK format key due to "
2403			   "Enrollee not supporting display");
2404		wps->use_psk_key = 1;
2405	}
2406
2407	return 0;
2408}
2409
2410
2411static int wps_process_wps_state(struct wps_data *wps, const u8 *state)
2412{
2413	if (state == NULL) {
2414		wpa_printf(MSG_DEBUG, "WPS: No Wi-Fi Protected Setup State "
2415			   "received");
2416		return -1;
2417	}
2418
2419	wpa_printf(MSG_DEBUG, "WPS: Enrollee Wi-Fi Protected Setup State %d",
2420		   *state);
2421
2422	return 0;
2423}
2424
2425
2426static int wps_process_assoc_state(struct wps_data *wps, const u8 *assoc)
2427{
2428	u16 a;
2429
2430	if (assoc == NULL) {
2431		wpa_printf(MSG_DEBUG, "WPS: No Association State received");
2432		return -1;
2433	}
2434
2435	a = WPA_GET_BE16(assoc);
2436	wpa_printf(MSG_DEBUG, "WPS: Enrollee Association State %d", a);
2437
2438	return 0;
2439}
2440
2441
2442static int wps_process_config_error(struct wps_data *wps, const u8 *err)
2443{
2444	u16 e;
2445
2446	if (err == NULL) {
2447		wpa_printf(MSG_DEBUG, "WPS: No Configuration Error received");
2448		return -1;
2449	}
2450
2451	e = WPA_GET_BE16(err);
2452	wpa_printf(MSG_DEBUG, "WPS: Enrollee Configuration Error %d", e);
2453
2454	return 0;
2455}
2456
2457
2458static int wps_registrar_p2p_dev_addr_match(struct wps_data *wps)
2459{
2460#ifdef CONFIG_P2P
2461	struct wps_registrar *reg = wps->wps->registrar;
2462
2463	if (is_zero_ether_addr(reg->p2p_dev_addr))
2464		return 1; /* no filtering in use */
2465
2466	if (os_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ETH_ALEN) != 0) {
2467		wpa_printf(MSG_DEBUG, "WPS: No match on P2P Device Address "
2468			   "filtering for PBC: expected " MACSTR " was "
2469			   MACSTR " - indicate PBC session overlap",
2470			   MAC2STR(reg->p2p_dev_addr),
2471			   MAC2STR(wps->p2p_dev_addr));
2472		return 0;
2473	}
2474#endif /* CONFIG_P2P */
2475	return 1;
2476}
2477
2478
2479static int wps_registrar_skip_overlap(struct wps_data *wps)
2480{
2481#ifdef CONFIG_P2P
2482	struct wps_registrar *reg = wps->wps->registrar;
2483
2484	if (is_zero_ether_addr(reg->p2p_dev_addr))
2485		return 0; /* no specific Enrollee selected */
2486
2487	if (os_memcmp(reg->p2p_dev_addr, wps->p2p_dev_addr, ETH_ALEN) == 0) {
2488		wpa_printf(MSG_DEBUG, "WPS: Skip PBC overlap due to selected "
2489			   "Enrollee match");
2490		return 1;
2491	}
2492#endif /* CONFIG_P2P */
2493	return 0;
2494}
2495
2496
2497static enum wps_process_res wps_process_m1(struct wps_data *wps,
2498					   struct wps_parse_attr *attr)
2499{
2500	wpa_printf(MSG_DEBUG, "WPS: Received M1");
2501
2502	if (wps->state != RECV_M1) {
2503		wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2504			   "receiving M1", wps->state);
2505		return WPS_FAILURE;
2506	}
2507
2508	if (wps_process_uuid_e(wps, attr->uuid_e) ||
2509	    wps_process_mac_addr(wps, attr->mac_addr) ||
2510	    wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
2511	    wps_process_pubkey(wps, attr->public_key, attr->public_key_len) ||
2512	    wps_process_auth_type_flags(wps, attr->auth_type_flags) ||
2513	    wps_process_encr_type_flags(wps, attr->encr_type_flags) ||
2514	    wps_process_conn_type_flags(wps, attr->conn_type_flags) ||
2515	    wps_process_config_methods(wps, attr->config_methods) ||
2516	    wps_process_wps_state(wps, attr->wps_state) ||
2517	    wps_process_device_attrs(&wps->peer_dev, attr) ||
2518	    wps_process_rf_bands(&wps->peer_dev, attr->rf_bands) ||
2519	    wps_process_assoc_state(wps, attr->assoc_state) ||
2520	    wps_process_dev_password_id(wps, attr->dev_password_id) ||
2521	    wps_process_config_error(wps, attr->config_error) ||
2522	    wps_process_os_version(&wps->peer_dev, attr->os_version))
2523		return WPS_FAILURE;
2524
2525	if (wps->dev_pw_id < 0x10 &&
2526	    wps->dev_pw_id != DEV_PW_DEFAULT &&
2527	    wps->dev_pw_id != DEV_PW_USER_SPECIFIED &&
2528	    wps->dev_pw_id != DEV_PW_MACHINE_SPECIFIED &&
2529	    wps->dev_pw_id != DEV_PW_REGISTRAR_SPECIFIED &&
2530	    (wps->dev_pw_id != DEV_PW_PUSHBUTTON ||
2531	     !wps->wps->registrar->pbc)) {
2532		wpa_printf(MSG_DEBUG, "WPS: Unsupported Device Password ID %d",
2533			   wps->dev_pw_id);
2534		wps->state = SEND_M2D;
2535		return WPS_CONTINUE;
2536	}
2537
2538#ifdef CONFIG_WPS_NFC
2539	if (wps->dev_pw_id >= 0x10) {
2540		struct wps_nfc_pw_token *token;
2541		const u8 *addr[1];
2542		u8 hash[WPS_HASH_LEN];
2543
2544		token = wps_get_nfc_pw_token(
2545			&wps->wps->registrar->nfc_pw_tokens, wps->dev_pw_id);
2546		if (token) {
2547			wpa_printf(MSG_DEBUG, "WPS: Found matching NFC "
2548				   "Password Token");
2549			dl_list_del(&token->list);
2550			wps->nfc_pw_token = token;
2551
2552			addr[0] = attr->public_key;
2553			sha256_vector(1, addr, &attr->public_key_len, hash);
2554			if (os_memcmp(hash, wps->nfc_pw_token->pubkey_hash,
2555				      WPS_OOB_PUBKEY_HASH_LEN) != 0) {
2556				wpa_printf(MSG_ERROR, "WPS: Public Key hash "
2557					   "mismatch");
2558				return WPS_FAILURE;
2559			}
2560		}
2561	}
2562#endif /* CONFIG_WPS_NFC */
2563
2564	if (wps->dev_pw_id == DEV_PW_PUSHBUTTON) {
2565		if ((wps->wps->registrar->force_pbc_overlap ||
2566		     wps_registrar_pbc_overlap(wps->wps->registrar,
2567					       wps->mac_addr_e, wps->uuid_e) ||
2568		     !wps_registrar_p2p_dev_addr_match(wps)) &&
2569		    !wps_registrar_skip_overlap(wps)) {
2570			wpa_printf(MSG_DEBUG, "WPS: PBC overlap - deny PBC "
2571				   "negotiation");
2572			wps->state = SEND_M2D;
2573			wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2574			wps_pbc_overlap_event(wps->wps);
2575			wps_fail_event(wps->wps, WPS_M1,
2576				       WPS_CFG_MULTIPLE_PBC_DETECTED,
2577				       WPS_EI_NO_ERROR, wps->mac_addr_e);
2578			wps->wps->registrar->force_pbc_overlap = 1;
2579			return WPS_CONTINUE;
2580		}
2581		wps_registrar_add_pbc_session(wps->wps->registrar,
2582					      wps->mac_addr_e, wps->uuid_e);
2583		wps->pbc = 1;
2584	}
2585
2586#ifdef WPS_WORKAROUNDS
2587	/*
2588	 * It looks like Mac OS X 10.6.3 and 10.6.4 do not like Network Key in
2589	 * passphrase format. To avoid interop issues, force PSK format to be
2590	 * used.
2591	 */
2592	if (!wps->use_psk_key &&
2593	    wps->peer_dev.manufacturer &&
2594	    os_strncmp(wps->peer_dev.manufacturer, "Apple ", 6) == 0 &&
2595	    wps->peer_dev.model_name &&
2596	    os_strcmp(wps->peer_dev.model_name, "AirPort") == 0) {
2597		wpa_printf(MSG_DEBUG, "WPS: Workaround - Force Network Key in "
2598			   "PSK format");
2599		wps->use_psk_key = 1;
2600	}
2601#endif /* WPS_WORKAROUNDS */
2602
2603	wps->state = SEND_M2;
2604	return WPS_CONTINUE;
2605}
2606
2607
2608static enum wps_process_res wps_process_m3(struct wps_data *wps,
2609					   const struct wpabuf *msg,
2610					   struct wps_parse_attr *attr)
2611{
2612	wpa_printf(MSG_DEBUG, "WPS: Received M3");
2613
2614	if (wps->state != RECV_M3) {
2615		wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2616			   "receiving M3", wps->state);
2617		wps->state = SEND_WSC_NACK;
2618		return WPS_CONTINUE;
2619	}
2620
2621	if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2622	    !wps_registrar_skip_overlap(wps)) {
2623		wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2624			   "session overlap");
2625		wps->state = SEND_WSC_NACK;
2626		wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2627		return WPS_CONTINUE;
2628	}
2629
2630	if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2631	    wps_process_authenticator(wps, attr->authenticator, msg) ||
2632	    wps_process_e_hash1(wps, attr->e_hash1) ||
2633	    wps_process_e_hash2(wps, attr->e_hash2)) {
2634		wps->state = SEND_WSC_NACK;
2635		return WPS_CONTINUE;
2636	}
2637
2638	wps->state = SEND_M4;
2639	return WPS_CONTINUE;
2640}
2641
2642
2643static enum wps_process_res wps_process_m5(struct wps_data *wps,
2644					   const struct wpabuf *msg,
2645					   struct wps_parse_attr *attr)
2646{
2647	struct wpabuf *decrypted;
2648	struct wps_parse_attr eattr;
2649
2650	wpa_printf(MSG_DEBUG, "WPS: Received M5");
2651
2652	if (wps->state != RECV_M5) {
2653		wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2654			   "receiving M5", wps->state);
2655		wps->state = SEND_WSC_NACK;
2656		return WPS_CONTINUE;
2657	}
2658
2659	if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2660	    !wps_registrar_skip_overlap(wps)) {
2661		wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2662			   "session overlap");
2663		wps->state = SEND_WSC_NACK;
2664		wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2665		return WPS_CONTINUE;
2666	}
2667
2668	if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2669	    wps_process_authenticator(wps, attr->authenticator, msg)) {
2670		wps->state = SEND_WSC_NACK;
2671		return WPS_CONTINUE;
2672	}
2673
2674	decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2675					      attr->encr_settings_len);
2676	if (decrypted == NULL) {
2677		wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
2678			   "Settings attribute");
2679		wps->state = SEND_WSC_NACK;
2680		return WPS_CONTINUE;
2681	}
2682
2683	if (wps_validate_m5_encr(decrypted, attr->version2 != NULL) < 0) {
2684		wpabuf_free(decrypted);
2685		wps->state = SEND_WSC_NACK;
2686		return WPS_CONTINUE;
2687	}
2688
2689	wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2690		   "attribute");
2691	if (wps_parse_msg(decrypted, &eattr) < 0 ||
2692	    wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2693	    wps_process_e_snonce1(wps, eattr.e_snonce1)) {
2694		wpabuf_free(decrypted);
2695		wps->state = SEND_WSC_NACK;
2696		return WPS_CONTINUE;
2697	}
2698	wpabuf_free(decrypted);
2699
2700	wps->state = SEND_M6;
2701	return WPS_CONTINUE;
2702}
2703
2704
2705static void wps_sta_cred_cb(struct wps_data *wps)
2706{
2707	/*
2708	 * Update credential to only include a single authentication and
2709	 * encryption type in case the AP configuration includes more than one
2710	 * option.
2711	 */
2712	if (wps->cred.auth_type & WPS_AUTH_WPA2PSK)
2713		wps->cred.auth_type = WPS_AUTH_WPA2PSK;
2714	else if (wps->cred.auth_type & WPS_AUTH_WPAPSK)
2715		wps->cred.auth_type = WPS_AUTH_WPAPSK;
2716	if (wps->cred.encr_type & WPS_ENCR_AES)
2717		wps->cred.encr_type = WPS_ENCR_AES;
2718	else if (wps->cred.encr_type & WPS_ENCR_TKIP)
2719		wps->cred.encr_type = WPS_ENCR_TKIP;
2720	wpa_printf(MSG_DEBUG, "WPS: Update local configuration based on the "
2721		   "AP configuration");
2722	if (wps->wps->cred_cb)
2723		wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
2724}
2725
2726
2727static void wps_cred_update(struct wps_credential *dst,
2728			    struct wps_credential *src)
2729{
2730	os_memcpy(dst->ssid, src->ssid, sizeof(dst->ssid));
2731	dst->ssid_len = src->ssid_len;
2732	dst->auth_type = src->auth_type;
2733	dst->encr_type = src->encr_type;
2734	dst->key_idx = src->key_idx;
2735	os_memcpy(dst->key, src->key, sizeof(dst->key));
2736	dst->key_len = src->key_len;
2737}
2738
2739
2740static int wps_process_ap_settings_r(struct wps_data *wps,
2741				     struct wps_parse_attr *attr)
2742{
2743	struct wpabuf *msg;
2744
2745	if (wps->wps->ap || wps->er)
2746		return 0;
2747
2748	/* AP Settings Attributes in M7 when Enrollee is an AP */
2749	if (wps_process_ap_settings(attr, &wps->cred) < 0)
2750		return -1;
2751
2752	wpa_printf(MSG_INFO, "WPS: Received old AP configuration from AP");
2753
2754	if (wps->new_ap_settings) {
2755		wpa_printf(MSG_INFO, "WPS: Update AP configuration based on "
2756			   "new settings");
2757		wps_cred_update(&wps->cred, wps->new_ap_settings);
2758		return 0;
2759	} else {
2760		/*
2761		 * Use the AP PIN only to receive the current AP settings, not
2762		 * to reconfigure the AP.
2763		 */
2764
2765		/*
2766		 * Clear selected registrar here since we do not get to
2767		 * WSC_Done in this protocol run.
2768		 */
2769		wps_registrar_pin_completed(wps->wps->registrar);
2770
2771		msg = wps_build_ap_cred(wps);
2772		if (msg == NULL)
2773			return -1;
2774		wps->cred.cred_attr = wpabuf_head(msg);
2775		wps->cred.cred_attr_len = wpabuf_len(msg);
2776
2777		if (wps->ap_settings_cb) {
2778			wps->ap_settings_cb(wps->ap_settings_cb_ctx,
2779					    &wps->cred);
2780			wpabuf_free(msg);
2781			return 1;
2782		}
2783		wps_sta_cred_cb(wps);
2784
2785		wps->cred.cred_attr = NULL;
2786		wps->cred.cred_attr_len = 0;
2787		wpabuf_free(msg);
2788
2789		return 1;
2790	}
2791}
2792
2793
2794static enum wps_process_res wps_process_m7(struct wps_data *wps,
2795					   const struct wpabuf *msg,
2796					   struct wps_parse_attr *attr)
2797{
2798	struct wpabuf *decrypted;
2799	struct wps_parse_attr eattr;
2800
2801	wpa_printf(MSG_DEBUG, "WPS: Received M7");
2802
2803	if (wps->state != RECV_M7) {
2804		wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
2805			   "receiving M7", wps->state);
2806		wps->state = SEND_WSC_NACK;
2807		return WPS_CONTINUE;
2808	}
2809
2810	if (wps->pbc && wps->wps->registrar->force_pbc_overlap &&
2811	    !wps_registrar_skip_overlap(wps)) {
2812		wpa_printf(MSG_DEBUG, "WPS: Reject negotiation due to PBC "
2813			   "session overlap");
2814		wps->state = SEND_WSC_NACK;
2815		wps->config_error = WPS_CFG_MULTIPLE_PBC_DETECTED;
2816		return WPS_CONTINUE;
2817	}
2818
2819	if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
2820	    wps_process_authenticator(wps, attr->authenticator, msg)) {
2821		wps->state = SEND_WSC_NACK;
2822		return WPS_CONTINUE;
2823	}
2824
2825	decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
2826					      attr->encr_settings_len);
2827	if (decrypted == NULL) {
2828		wpa_printf(MSG_DEBUG, "WPS: Failed to decrypt Encrypted "
2829			   "Settings attribute");
2830		wps->state = SEND_WSC_NACK;
2831		return WPS_CONTINUE;
2832	}
2833
2834	if (wps_validate_m7_encr(decrypted, wps->wps->ap || wps->er,
2835				 attr->version2 != NULL) < 0) {
2836		wpabuf_free(decrypted);
2837		wps->state = SEND_WSC_NACK;
2838		return WPS_CONTINUE;
2839	}
2840
2841	wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
2842		   "attribute");
2843	if (wps_parse_msg(decrypted, &eattr) < 0 ||
2844	    wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
2845	    wps_process_e_snonce2(wps, eattr.e_snonce2) ||
2846	    wps_process_ap_settings_r(wps, &eattr)) {
2847		wpabuf_free(decrypted);
2848		wps->state = SEND_WSC_NACK;
2849		return WPS_CONTINUE;
2850	}
2851
2852	wpabuf_free(decrypted);
2853
2854	wps->state = SEND_M8;
2855	return WPS_CONTINUE;
2856}
2857
2858
2859static enum wps_process_res wps_process_wsc_msg(struct wps_data *wps,
2860						const struct wpabuf *msg)
2861{
2862	struct wps_parse_attr attr;
2863	enum wps_process_res ret = WPS_CONTINUE;
2864
2865	wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG");
2866
2867	if (wps_parse_msg(msg, &attr) < 0)
2868		return WPS_FAILURE;
2869
2870	if (attr.msg_type == NULL) {
2871		wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2872		wps->state = SEND_WSC_NACK;
2873		return WPS_CONTINUE;
2874	}
2875
2876	if (*attr.msg_type != WPS_M1 &&
2877	    (attr.registrar_nonce == NULL ||
2878	     os_memcmp(wps->nonce_r, attr.registrar_nonce,
2879		       WPS_NONCE_LEN) != 0)) {
2880		wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2881		return WPS_FAILURE;
2882	}
2883
2884	switch (*attr.msg_type) {
2885	case WPS_M1:
2886		if (wps_validate_m1(msg) < 0)
2887			return WPS_FAILURE;
2888#ifdef CONFIG_WPS_UPNP
2889		if (wps->wps->wps_upnp && attr.mac_addr) {
2890			/* Remove old pending messages when starting new run */
2891			wps_free_pending_msgs(wps->wps->upnp_msgs);
2892			wps->wps->upnp_msgs = NULL;
2893
2894			upnp_wps_device_send_wlan_event(
2895				wps->wps->wps_upnp, attr.mac_addr,
2896				UPNP_WPS_WLANEVENT_TYPE_EAP, msg);
2897		}
2898#endif /* CONFIG_WPS_UPNP */
2899		ret = wps_process_m1(wps, &attr);
2900		break;
2901	case WPS_M3:
2902		if (wps_validate_m3(msg) < 0)
2903			return WPS_FAILURE;
2904		ret = wps_process_m3(wps, msg, &attr);
2905		if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2906			wps_fail_event(wps->wps, WPS_M3, wps->config_error,
2907				       wps->error_indication, wps->mac_addr_e);
2908		break;
2909	case WPS_M5:
2910		if (wps_validate_m5(msg) < 0)
2911			return WPS_FAILURE;
2912		ret = wps_process_m5(wps, msg, &attr);
2913		if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2914			wps_fail_event(wps->wps, WPS_M5, wps->config_error,
2915				       wps->error_indication, wps->mac_addr_e);
2916		break;
2917	case WPS_M7:
2918		if (wps_validate_m7(msg) < 0)
2919			return WPS_FAILURE;
2920		ret = wps_process_m7(wps, msg, &attr);
2921		if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
2922			wps_fail_event(wps->wps, WPS_M7, wps->config_error,
2923				       wps->error_indication, wps->mac_addr_e);
2924		break;
2925	default:
2926		wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d",
2927			   *attr.msg_type);
2928		return WPS_FAILURE;
2929	}
2930
2931	if (ret == WPS_CONTINUE) {
2932		/* Save a copy of the last message for Authenticator derivation
2933		 */
2934		wpabuf_free(wps->last_msg);
2935		wps->last_msg = wpabuf_dup(msg);
2936	}
2937
2938	return ret;
2939}
2940
2941
2942static enum wps_process_res wps_process_wsc_ack(struct wps_data *wps,
2943						const struct wpabuf *msg)
2944{
2945	struct wps_parse_attr attr;
2946
2947	wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK");
2948
2949	if (wps_parse_msg(msg, &attr) < 0)
2950		return WPS_FAILURE;
2951
2952	if (attr.msg_type == NULL) {
2953		wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
2954		return WPS_FAILURE;
2955	}
2956
2957	if (*attr.msg_type != WPS_WSC_ACK) {
2958		wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
2959			   *attr.msg_type);
2960		return WPS_FAILURE;
2961	}
2962
2963#ifdef CONFIG_WPS_UPNP
2964	if (wps->wps->wps_upnp && wps->ext_reg && wps->state == RECV_M2D_ACK &&
2965	    upnp_wps_subscribers(wps->wps->wps_upnp)) {
2966		if (wps->wps->upnp_msgs)
2967			return WPS_CONTINUE;
2968		wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
2969			   "external Registrar");
2970		return WPS_PENDING;
2971	}
2972#endif /* CONFIG_WPS_UPNP */
2973
2974	if (attr.registrar_nonce == NULL ||
2975	    os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
2976	{
2977		wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
2978		return WPS_FAILURE;
2979	}
2980
2981	if (attr.enrollee_nonce == NULL ||
2982	    os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
2983		wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
2984		return WPS_FAILURE;
2985	}
2986
2987	if (wps->state == RECV_M2D_ACK) {
2988#ifdef CONFIG_WPS_UPNP
2989		if (wps->wps->wps_upnp &&
2990		    upnp_wps_subscribers(wps->wps->wps_upnp)) {
2991			if (wps->wps->upnp_msgs)
2992				return WPS_CONTINUE;
2993			if (wps->ext_reg == 0)
2994				wps->ext_reg = 1;
2995			wpa_printf(MSG_DEBUG, "WPS: Wait for response from an "
2996				   "external Registrar");
2997			return WPS_PENDING;
2998		}
2999#endif /* CONFIG_WPS_UPNP */
3000
3001		wpa_printf(MSG_DEBUG, "WPS: No more registrars available - "
3002			   "terminate negotiation");
3003	}
3004
3005	return WPS_FAILURE;
3006}
3007
3008
3009static enum wps_process_res wps_process_wsc_nack(struct wps_data *wps,
3010						 const struct wpabuf *msg)
3011{
3012	struct wps_parse_attr attr;
3013	int old_state;
3014	u16 config_error;
3015
3016	wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
3017
3018	old_state = wps->state;
3019	wps->state = SEND_WSC_NACK;
3020
3021	if (wps_parse_msg(msg, &attr) < 0)
3022		return WPS_FAILURE;
3023
3024	if (attr.msg_type == NULL) {
3025		wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3026		return WPS_FAILURE;
3027	}
3028
3029	if (*attr.msg_type != WPS_WSC_NACK) {
3030		wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3031			   *attr.msg_type);
3032		return WPS_FAILURE;
3033	}
3034
3035#ifdef CONFIG_WPS_UPNP
3036	if (wps->wps->wps_upnp && wps->ext_reg) {
3037		wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
3038			   "Registrar terminated by the Enrollee");
3039		return WPS_FAILURE;
3040	}
3041#endif /* CONFIG_WPS_UPNP */
3042
3043	if (attr.registrar_nonce == NULL ||
3044	    os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
3045	{
3046		wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3047		return WPS_FAILURE;
3048	}
3049
3050	if (attr.enrollee_nonce == NULL ||
3051	    os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
3052		wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3053		return WPS_FAILURE;
3054	}
3055
3056	if (attr.config_error == NULL) {
3057		wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute "
3058			   "in WSC_NACK");
3059		return WPS_FAILURE;
3060	}
3061
3062	config_error = WPA_GET_BE16(attr.config_error);
3063	wpa_printf(MSG_DEBUG, "WPS: Enrollee terminated negotiation with "
3064		   "Configuration Error %d", config_error);
3065
3066	switch (old_state) {
3067	case RECV_M3:
3068		wps_fail_event(wps->wps, WPS_M2, config_error,
3069			       wps->error_indication, wps->mac_addr_e);
3070		break;
3071	case RECV_M5:
3072		wps_fail_event(wps->wps, WPS_M4, config_error,
3073			       wps->error_indication, wps->mac_addr_e);
3074		break;
3075	case RECV_M7:
3076		wps_fail_event(wps->wps, WPS_M6, config_error,
3077			       wps->error_indication, wps->mac_addr_e);
3078		break;
3079	case RECV_DONE:
3080		wps_fail_event(wps->wps, WPS_M8, config_error,
3081			       wps->error_indication, wps->mac_addr_e);
3082		break;
3083	default:
3084		break;
3085	}
3086
3087	return WPS_FAILURE;
3088}
3089
3090
3091static enum wps_process_res wps_process_wsc_done(struct wps_data *wps,
3092						 const struct wpabuf *msg)
3093{
3094	struct wps_parse_attr attr;
3095
3096	wpa_printf(MSG_DEBUG, "WPS: Received WSC_Done");
3097
3098	if (wps->state != RECV_DONE &&
3099	    (!wps->wps->wps_upnp || !wps->ext_reg)) {
3100		wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
3101			   "receiving WSC_Done", wps->state);
3102		return WPS_FAILURE;
3103	}
3104
3105	if (wps_parse_msg(msg, &attr) < 0)
3106		return WPS_FAILURE;
3107
3108	if (attr.msg_type == NULL) {
3109		wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
3110		return WPS_FAILURE;
3111	}
3112
3113	if (*attr.msg_type != WPS_WSC_DONE) {
3114		wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
3115			   *attr.msg_type);
3116		return WPS_FAILURE;
3117	}
3118
3119#ifdef CONFIG_WPS_UPNP
3120	if (wps->wps->wps_upnp && wps->ext_reg) {
3121		wpa_printf(MSG_DEBUG, "WPS: Negotiation using external "
3122			   "Registrar completed successfully");
3123		wps_device_store(wps->wps->registrar, &wps->peer_dev,
3124				 wps->uuid_e);
3125		return WPS_DONE;
3126	}
3127#endif /* CONFIG_WPS_UPNP */
3128
3129	if (attr.registrar_nonce == NULL ||
3130	    os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN) != 0)
3131	{
3132		wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
3133		return WPS_FAILURE;
3134	}
3135
3136	if (attr.enrollee_nonce == NULL ||
3137	    os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN) != 0) {
3138		wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
3139		return WPS_FAILURE;
3140	}
3141
3142	wpa_printf(MSG_DEBUG, "WPS: Negotiation completed successfully");
3143	wps_device_store(wps->wps->registrar, &wps->peer_dev,
3144			 wps->uuid_e);
3145
3146	if (wps->wps->wps_state == WPS_STATE_NOT_CONFIGURED && wps->new_psk &&
3147	    wps->wps->ap && !wps->wps->registrar->disable_auto_conf) {
3148		struct wps_credential cred;
3149
3150		wpa_printf(MSG_DEBUG, "WPS: Moving to Configured state based "
3151			   "on first Enrollee connection");
3152
3153		os_memset(&cred, 0, sizeof(cred));
3154		os_memcpy(cred.ssid, wps->wps->ssid, wps->wps->ssid_len);
3155		cred.ssid_len = wps->wps->ssid_len;
3156		cred.auth_type = WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK;
3157		cred.encr_type = WPS_ENCR_TKIP | WPS_ENCR_AES;
3158		os_memcpy(cred.key, wps->new_psk, wps->new_psk_len);
3159		cred.key_len = wps->new_psk_len;
3160
3161		wps->wps->wps_state = WPS_STATE_CONFIGURED;
3162		wpa_hexdump_ascii_key(MSG_DEBUG,
3163				      "WPS: Generated random passphrase",
3164				      wps->new_psk, wps->new_psk_len);
3165		if (wps->wps->cred_cb)
3166			wps->wps->cred_cb(wps->wps->cb_ctx, &cred);
3167
3168		os_free(wps->new_psk);
3169		wps->new_psk = NULL;
3170	}
3171
3172	if (!wps->wps->ap && !wps->er)
3173		wps_sta_cred_cb(wps);
3174
3175	if (wps->new_psk) {
3176		if (wps_cb_new_psk(wps->wps->registrar, wps->mac_addr_e,
3177				   wps->p2p_dev_addr, wps->new_psk,
3178				   wps->new_psk_len)) {
3179			wpa_printf(MSG_DEBUG, "WPS: Failed to configure the "
3180				   "new PSK");
3181		}
3182		os_free(wps->new_psk);
3183		wps->new_psk = NULL;
3184	}
3185
3186	wps_cb_reg_success(wps->wps->registrar, wps->mac_addr_e, wps->uuid_e,
3187			   wps->dev_password, wps->dev_password_len);
3188
3189	if (wps->pbc) {
3190		wps_registrar_remove_pbc_session(wps->wps->registrar,
3191						 wps->uuid_e,
3192						 wps->p2p_dev_addr);
3193		wps_registrar_pbc_completed(wps->wps->registrar);
3194		os_get_time(&wps->wps->registrar->pbc_ignore_start);
3195		os_memcpy(wps->wps->registrar->pbc_ignore_uuid, wps->uuid_e,
3196			  WPS_UUID_LEN);
3197	} else {
3198		wps_registrar_pin_completed(wps->wps->registrar);
3199	}
3200	/* TODO: maintain AuthorizedMACs somewhere separately for each ER and
3201	 * merge them into APs own list.. */
3202
3203	wps_success_event(wps->wps, wps->mac_addr_e);
3204
3205	return WPS_DONE;
3206}
3207
3208
3209enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
3210					       enum wsc_op_code op_code,
3211					       const struct wpabuf *msg)
3212{
3213	enum wps_process_res ret;
3214
3215	wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu "
3216		   "op_code=%d)",
3217		   (unsigned long) wpabuf_len(msg), op_code);
3218
3219#ifdef CONFIG_WPS_UPNP
3220	if (wps->wps->wps_upnp && op_code == WSC_MSG && wps->ext_reg == 1) {
3221		struct wps_parse_attr attr;
3222		if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type &&
3223		    *attr.msg_type == WPS_M3)
3224			wps->ext_reg = 2; /* past M2/M2D phase */
3225	}
3226	if (wps->ext_reg > 1)
3227		wps_registrar_free_pending_m2(wps->wps);
3228	if (wps->wps->wps_upnp && wps->ext_reg &&
3229	    wps->wps->upnp_msgs == NULL &&
3230	    (op_code == WSC_MSG || op_code == WSC_Done || op_code == WSC_NACK))
3231	{
3232		struct wps_parse_attr attr;
3233		int type;
3234		if (wps_parse_msg(msg, &attr) < 0 || attr.msg_type == NULL)
3235			type = -1;
3236		else
3237			type = *attr.msg_type;
3238		wpa_printf(MSG_DEBUG, "WPS: Sending received message (type %d)"
3239			   " to external Registrar for processing", type);
3240		upnp_wps_device_send_wlan_event(wps->wps->wps_upnp,
3241						wps->mac_addr_e,
3242						UPNP_WPS_WLANEVENT_TYPE_EAP,
3243						msg);
3244		if (op_code == WSC_MSG)
3245			return WPS_PENDING;
3246	} else if (wps->wps->wps_upnp && wps->ext_reg && op_code == WSC_MSG) {
3247		wpa_printf(MSG_DEBUG, "WPS: Skip internal processing - using "
3248			   "external Registrar");
3249		return WPS_CONTINUE;
3250	}
3251#endif /* CONFIG_WPS_UPNP */
3252
3253	switch (op_code) {
3254	case WSC_MSG:
3255		return wps_process_wsc_msg(wps, msg);
3256	case WSC_ACK:
3257		if (wps_validate_wsc_ack(msg) < 0)
3258			return WPS_FAILURE;
3259		return wps_process_wsc_ack(wps, msg);
3260	case WSC_NACK:
3261		if (wps_validate_wsc_nack(msg) < 0)
3262			return WPS_FAILURE;
3263		return wps_process_wsc_nack(wps, msg);
3264	case WSC_Done:
3265		if (wps_validate_wsc_done(msg) < 0)
3266			return WPS_FAILURE;
3267		ret = wps_process_wsc_done(wps, msg);
3268		if (ret == WPS_FAILURE) {
3269			wps->state = SEND_WSC_NACK;
3270			wps_fail_event(wps->wps, WPS_WSC_DONE,
3271				       wps->config_error,
3272				       wps->error_indication, wps->mac_addr_e);
3273		}
3274		return ret;
3275	default:
3276		wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code);
3277		return WPS_FAILURE;
3278	}
3279}
3280
3281
3282int wps_registrar_update_ie(struct wps_registrar *reg)
3283{
3284	return wps_set_ie(reg);
3285}
3286
3287
3288static void wps_registrar_set_selected_timeout(void *eloop_ctx,
3289					       void *timeout_ctx)
3290{
3291	struct wps_registrar *reg = eloop_ctx;
3292
3293	wpa_printf(MSG_DEBUG, "WPS: Selected Registrar timeout - "
3294		   "unselect internal Registrar");
3295	reg->selected_registrar = 0;
3296	reg->pbc = 0;
3297	wps_registrar_selected_registrar_changed(reg, 0);
3298}
3299
3300
3301#ifdef CONFIG_WPS_UPNP
3302static void wps_registrar_sel_reg_add(struct wps_registrar *reg,
3303				      struct subscription *s)
3304{
3305	int i, j;
3306	wpa_printf(MSG_DEBUG, "WPS: External Registrar selected (dev_pw_id=%d "
3307		   "config_methods=0x%x)",
3308		   s->dev_password_id, s->config_methods);
3309	reg->sel_reg_union = 1;
3310	if (reg->sel_reg_dev_password_id_override != DEV_PW_PUSHBUTTON)
3311		reg->sel_reg_dev_password_id_override = s->dev_password_id;
3312	if (reg->sel_reg_config_methods_override == -1)
3313		reg->sel_reg_config_methods_override = 0;
3314	reg->sel_reg_config_methods_override |= s->config_methods;
3315	for (i = 0; i < WPS_MAX_AUTHORIZED_MACS; i++)
3316		if (is_zero_ether_addr(reg->authorized_macs_union[i]))
3317			break;
3318	for (j = 0; i < WPS_MAX_AUTHORIZED_MACS && j < WPS_MAX_AUTHORIZED_MACS;
3319	     j++) {
3320		if (is_zero_ether_addr(s->authorized_macs[j]))
3321			break;
3322		wpa_printf(MSG_DEBUG, "WPS: Add authorized MAC into union: "
3323			   MACSTR, MAC2STR(s->authorized_macs[j]));
3324		os_memcpy(reg->authorized_macs_union[i],
3325			  s->authorized_macs[j], ETH_ALEN);
3326		i++;
3327	}
3328	wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union",
3329		    (u8 *) reg->authorized_macs_union,
3330		    sizeof(reg->authorized_macs_union));
3331}
3332#endif /* CONFIG_WPS_UPNP */
3333
3334
3335static void wps_registrar_sel_reg_union(struct wps_registrar *reg)
3336{
3337#ifdef CONFIG_WPS_UPNP
3338	struct subscription *s;
3339
3340	if (reg->wps->wps_upnp == NULL)
3341		return;
3342
3343	dl_list_for_each(s, &reg->wps->wps_upnp->subscriptions,
3344			 struct subscription, list) {
3345		struct subscr_addr *sa;
3346		sa = dl_list_first(&s->addr_list, struct subscr_addr, list);
3347		if (sa) {
3348			wpa_printf(MSG_DEBUG, "WPS: External Registrar %s:%d",
3349				   inet_ntoa(sa->saddr.sin_addr),
3350				   ntohs(sa->saddr.sin_port));
3351		}
3352		if (s->selected_registrar)
3353			wps_registrar_sel_reg_add(reg, s);
3354		else
3355			wpa_printf(MSG_DEBUG, "WPS: External Registrar not "
3356				   "selected");
3357	}
3358#endif /* CONFIG_WPS_UPNP */
3359}
3360
3361
3362/**
3363 * wps_registrar_selected_registrar_changed - SetSelectedRegistrar change
3364 * @reg: Registrar data from wps_registrar_init()
3365 *
3366 * This function is called when selected registrar state changes, e.g., when an
3367 * AP receives a SetSelectedRegistrar UPnP message.
3368 */
3369void wps_registrar_selected_registrar_changed(struct wps_registrar *reg,
3370					      u16 dev_pw_id)
3371{
3372	wpa_printf(MSG_DEBUG, "WPS: Selected registrar information changed");
3373
3374	reg->sel_reg_union = reg->selected_registrar;
3375	reg->sel_reg_dev_password_id_override = -1;
3376	reg->sel_reg_config_methods_override = -1;
3377	os_memcpy(reg->authorized_macs_union, reg->authorized_macs,
3378		  WPS_MAX_AUTHORIZED_MACS * ETH_ALEN);
3379	wpa_hexdump(MSG_DEBUG, "WPS: Authorized MACs union (start with own)",
3380		    (u8 *) reg->authorized_macs_union,
3381		    sizeof(reg->authorized_macs_union));
3382	if (reg->selected_registrar) {
3383		u16 methods;
3384
3385		methods = reg->wps->config_methods & ~WPS_CONFIG_PUSHBUTTON;
3386#ifdef CONFIG_WPS2
3387		methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
3388			     WPS_CONFIG_PHY_PUSHBUTTON);
3389#endif /* CONFIG_WPS2 */
3390		if (reg->pbc) {
3391			reg->sel_reg_dev_password_id_override =
3392				DEV_PW_PUSHBUTTON;
3393			wps_set_pushbutton(&methods, reg->wps->config_methods);
3394		} else if (dev_pw_id)
3395			reg->sel_reg_dev_password_id_override = dev_pw_id;
3396		wpa_printf(MSG_DEBUG, "WPS: Internal Registrar selected "
3397			   "(pbc=%d)", reg->pbc);
3398		reg->sel_reg_config_methods_override = methods;
3399	} else
3400		wpa_printf(MSG_DEBUG, "WPS: Internal Registrar not selected");
3401
3402	wps_registrar_sel_reg_union(reg);
3403
3404	wps_set_ie(reg);
3405	wps_cb_set_sel_reg(reg);
3406}
3407
3408
3409int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
3410			   char *buf, size_t buflen)
3411{
3412	struct wps_registrar_device *d;
3413	int len = 0, ret;
3414	char uuid[40];
3415	char devtype[WPS_DEV_TYPE_BUFSIZE];
3416
3417	d = wps_device_get(reg, addr);
3418	if (d == NULL)
3419		return 0;
3420	if (uuid_bin2str(d->uuid, uuid, sizeof(uuid)))
3421		return 0;
3422
3423	ret = os_snprintf(buf + len, buflen - len,
3424			  "wpsUuid=%s\n"
3425			  "wpsPrimaryDeviceType=%s\n"
3426			  "wpsDeviceName=%s\n"
3427			  "wpsManufacturer=%s\n"
3428			  "wpsModelName=%s\n"
3429			  "wpsModelNumber=%s\n"
3430			  "wpsSerialNumber=%s\n",
3431			  uuid,
3432			  wps_dev_type_bin2str(d->dev.pri_dev_type, devtype,
3433					       sizeof(devtype)),
3434			  d->dev.device_name ? d->dev.device_name : "",
3435			  d->dev.manufacturer ? d->dev.manufacturer : "",
3436			  d->dev.model_name ? d->dev.model_name : "",
3437			  d->dev.model_number ? d->dev.model_number : "",
3438			  d->dev.serial_number ? d->dev.serial_number : "");
3439	if (ret < 0 || (size_t) ret >= buflen - len)
3440		return len;
3441	len += ret;
3442
3443	return len;
3444}
3445
3446
3447int wps_registrar_config_ap(struct wps_registrar *reg,
3448			    struct wps_credential *cred)
3449{
3450#ifdef CONFIG_WPS2
3451	printf("encr_type=0x%x\n", cred->encr_type);
3452	if (!(cred->encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP |
3453				 WPS_ENCR_AES))) {
3454		if (cred->encr_type & WPS_ENCR_WEP) {
3455			wpa_printf(MSG_INFO, "WPS: Reject new AP settings "
3456				   "due to WEP configuration");
3457			return -1;
3458		}
3459
3460		wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to "
3461			   "invalid encr_type 0x%x", cred->encr_type);
3462		return -1;
3463	}
3464
3465	if ((cred->encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) ==
3466	    WPS_ENCR_TKIP) {
3467		wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> "
3468			   "TKIP+AES");
3469		cred->encr_type |= WPS_ENCR_AES;
3470	}
3471
3472	if ((cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) ==
3473	    WPS_AUTH_WPAPSK) {
3474		wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> "
3475			   "WPAPSK+WPA2PSK");
3476		cred->auth_type |= WPS_AUTH_WPA2PSK;
3477	}
3478#endif /* CONFIG_WPS2 */
3479
3480	if (reg->wps->cred_cb)
3481		return reg->wps->cred_cb(reg->wps->cb_ctx, cred);
3482
3483	return -1;
3484}
3485
3486
3487#ifdef CONFIG_WPS_NFC
3488
3489int wps_registrar_add_nfc_pw_token(struct wps_registrar *reg,
3490				   const u8 *pubkey_hash, u16 pw_id,
3491				   const u8 *dev_pw, size_t dev_pw_len)
3492{
3493	struct wps_nfc_pw_token *token;
3494
3495	if (dev_pw_len > WPS_OOB_DEVICE_PASSWORD_LEN)
3496		return -1;
3497
3498	wps_free_nfc_pw_tokens(&reg->nfc_pw_tokens, pw_id);
3499
3500	token = os_zalloc(sizeof(*token));
3501	if (token == NULL)
3502		return -1;
3503
3504	os_memcpy(token->pubkey_hash, pubkey_hash, WPS_OOB_PUBKEY_HASH_LEN);
3505	token->pw_id = pw_id;
3506	wpa_snprintf_hex_uppercase((char *) token->dev_pw,
3507				   sizeof(token->dev_pw),
3508				   dev_pw, dev_pw_len);
3509	token->dev_pw_len = dev_pw_len * 2;
3510
3511	dl_list_add(&reg->nfc_pw_tokens, &token->list);
3512
3513	reg->selected_registrar = 1;
3514	reg->pbc = 0;
3515	wps_registrar_add_authorized_mac(reg,
3516					 (u8 *) "\xff\xff\xff\xff\xff\xff");
3517	wps_registrar_selected_registrar_changed(reg, pw_id);
3518	eloop_cancel_timeout(wps_registrar_set_selected_timeout, reg, NULL);
3519	eloop_register_timeout(WPS_PBC_WALK_TIME, 0,
3520			       wps_registrar_set_selected_timeout,
3521			       reg, NULL);
3522
3523	wpa_printf(MSG_DEBUG, "WPS: Added NFC Device Password %u to Registrar",
3524		   pw_id);
3525
3526	return 0;
3527}
3528
3529
3530int wps_registrar_add_nfc_password_token(struct wps_registrar *reg,
3531					 const u8 *oob_dev_pw,
3532					 size_t oob_dev_pw_len)
3533{
3534	const u8 *pos, *hash, *dev_pw;
3535	u16 id;
3536	size_t dev_pw_len;
3537
3538	if (oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2 +
3539	    WPS_OOB_DEVICE_PASSWORD_MIN_LEN ||
3540	    oob_dev_pw_len > WPS_OOB_PUBKEY_HASH_LEN + 2 +
3541	    WPS_OOB_DEVICE_PASSWORD_LEN)
3542		return -1;
3543
3544	hash = oob_dev_pw;
3545	pos = oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN;
3546	id = WPA_GET_BE16(pos);
3547	dev_pw = pos + 2;
3548	dev_pw_len = oob_dev_pw + oob_dev_pw_len - dev_pw;
3549
3550	wpa_printf(MSG_DEBUG, "WPS: Add NFC Password Token for Password ID %u",
3551		   id);
3552
3553	wpa_hexdump(MSG_DEBUG, "WPS: Public Key Hash",
3554		    hash, WPS_OOB_PUBKEY_HASH_LEN);
3555	wpa_hexdump_key(MSG_DEBUG, "WPS: Device Password", dev_pw, dev_pw_len);
3556
3557	return wps_registrar_add_nfc_pw_token(reg, hash, id, dev_pw,
3558					      dev_pw_len);
3559}
3560
3561
3562void wps_registrar_remove_nfc_pw_token(struct wps_registrar *reg,
3563				       struct wps_nfc_pw_token *token)
3564{
3565	wps_registrar_remove_authorized_mac(reg,
3566					    (u8 *) "\xff\xff\xff\xff\xff\xff");
3567	wps_registrar_selected_registrar_changed(reg, 0);
3568}
3569
3570#endif /* CONFIG_WPS_NFC */
3571