1/*
2 * hostapd / WPS integration
3 * Copyright (c) 2008-2012, 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/eloop.h"
13#include "utils/uuid.h"
14#include "common/wpa_ctrl.h"
15#include "common/ieee802_11_defs.h"
16#include "common/ieee802_11_common.h"
17#include "eapol_auth/eapol_auth_sm.h"
18#include "eapol_auth/eapol_auth_sm_i.h"
19#include "wps/wps.h"
20#include "wps/wps_defs.h"
21#include "wps/wps_dev_attr.h"
22#include "wps/wps_attr_parse.h"
23#include "hostapd.h"
24#include "ap_config.h"
25#include "ap_drv_ops.h"
26#include "beacon.h"
27#include "sta_info.h"
28#include "wps_hostapd.h"
29
30
31#ifdef CONFIG_WPS_UPNP
32#include "wps/wps_upnp.h"
33static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
34				 struct wps_context *wps);
35static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
36#endif /* CONFIG_WPS_UPNP */
37
38static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
39				    const u8 *bssid,
40				    const u8 *ie, size_t ie_len,
41				    int ssi_signal);
42static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
43static void hostapd_wps_nfc_clear(struct wps_context *wps);
44
45
46struct wps_for_each_data {
47	int (*func)(struct hostapd_data *h, void *ctx);
48	void *ctx;
49	struct hostapd_data *calling_hapd;
50};
51
52
53static int wps_for_each(struct hostapd_iface *iface, void *ctx)
54{
55	struct wps_for_each_data *data = ctx;
56	size_t j;
57
58	if (iface == NULL)
59		return 0;
60	for (j = 0; j < iface->num_bss; j++) {
61		struct hostapd_data *hapd = iface->bss[j];
62		int ret;
63
64		if (hapd != data->calling_hapd &&
65		    (hapd->conf->wps_independent ||
66		     data->calling_hapd->conf->wps_independent))
67			continue;
68
69		ret = data->func(hapd, data->ctx);
70		if (ret)
71			return ret;
72	}
73
74	return 0;
75}
76
77
78static int hostapd_wps_for_each(struct hostapd_data *hapd,
79				int (*func)(struct hostapd_data *h, void *ctx),
80				void *ctx)
81{
82	struct hostapd_iface *iface = hapd->iface;
83	struct wps_for_each_data data;
84	data.func = func;
85	data.ctx = ctx;
86	data.calling_hapd = hapd;
87	if (iface->interfaces == NULL ||
88	    iface->interfaces->for_each_interface == NULL)
89		return wps_for_each(iface, &data);
90	return iface->interfaces->for_each_interface(iface->interfaces,
91						     wps_for_each, &data);
92}
93
94
95static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
96				  const u8 *p2p_dev_addr, const u8 *psk,
97				  size_t psk_len)
98{
99	struct hostapd_data *hapd = ctx;
100	struct hostapd_wpa_psk *p;
101	struct hostapd_ssid *ssid = &hapd->conf->ssid;
102
103	if (is_zero_ether_addr(p2p_dev_addr)) {
104		wpa_printf(MSG_DEBUG,
105			   "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
106			   MAC2STR(mac_addr));
107	} else {
108		wpa_printf(MSG_DEBUG,
109			   "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
110			   " P2P Device Addr " MACSTR,
111			   MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
112	}
113	wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
114
115	if (psk_len != PMK_LEN) {
116		wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
117			   (unsigned long) psk_len);
118		return -1;
119	}
120
121	/* Add the new PSK to runtime PSK list */
122	p = os_zalloc(sizeof(*p));
123	if (p == NULL)
124		return -1;
125	os_memcpy(p->addr, mac_addr, ETH_ALEN);
126	os_memcpy(p->p2p_dev_addr, p2p_dev_addr, ETH_ALEN);
127	os_memcpy(p->psk, psk, PMK_LEN);
128
129	if (hapd->new_psk_cb) {
130		hapd->new_psk_cb(hapd->new_psk_cb_ctx, mac_addr, p2p_dev_addr,
131				 psk, psk_len);
132	}
133
134	p->next = ssid->wpa_psk;
135	ssid->wpa_psk = p;
136
137	if (ssid->wpa_psk_file) {
138		FILE *f;
139		char hex[PMK_LEN * 2 + 1];
140		/* Add the new PSK to PSK list file */
141		f = fopen(ssid->wpa_psk_file, "a");
142		if (f == NULL) {
143			wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
144				   "'%s'", ssid->wpa_psk_file);
145			return -1;
146		}
147
148		wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
149		fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
150		fclose(f);
151	}
152
153	return 0;
154}
155
156
157static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
158				 struct wpabuf *probe_resp_ie)
159{
160	struct hostapd_data *hapd = ctx;
161	wpabuf_free(hapd->wps_beacon_ie);
162	hapd->wps_beacon_ie = beacon_ie;
163	wpabuf_free(hapd->wps_probe_resp_ie);
164	hapd->wps_probe_resp_ie = probe_resp_ie;
165	if (hapd->beacon_set_done)
166		ieee802_11_set_beacon(hapd);
167	return hostapd_set_ap_wps_ie(hapd);
168}
169
170
171static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
172				      const struct wps_device_data *dev)
173{
174	struct hostapd_data *hapd = ctx;
175	char uuid[40], txt[400];
176	int len;
177	char devtype[WPS_DEV_TYPE_BUFSIZE];
178	if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
179		return;
180	wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
181	len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
182			  "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
183			  uuid, MAC2STR(dev->mac_addr), dev->device_name,
184			  dev->manufacturer, dev->model_name,
185			  dev->model_number, dev->serial_number,
186			  wps_dev_type_bin2str(dev->pri_dev_type, devtype,
187					       sizeof(devtype)));
188	if (!os_snprintf_error(sizeof(txt), len))
189		wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
190
191	if (hapd->conf->wps_pin_requests) {
192		FILE *f;
193		struct os_time t;
194		f = fopen(hapd->conf->wps_pin_requests, "a");
195		if (f == NULL)
196			return;
197		os_get_time(&t);
198		fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
199			"\t%s\n",
200			t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
201			dev->manufacturer, dev->model_name, dev->model_number,
202			dev->serial_number,
203			wps_dev_type_bin2str(dev->pri_dev_type, devtype,
204					     sizeof(devtype)));
205		fclose(f);
206	}
207}
208
209
210struct wps_stop_reg_data {
211	struct hostapd_data *current_hapd;
212	const u8 *uuid_e;
213	const u8 *dev_pw;
214	size_t dev_pw_len;
215};
216
217static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx)
218{
219	struct wps_stop_reg_data *data = ctx;
220	if (hapd != data->current_hapd && hapd->wps != NULL)
221		wps_registrar_complete(hapd->wps->registrar, data->uuid_e,
222				       data->dev_pw, data->dev_pw_len);
223	return 0;
224}
225
226
227static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
228				       const u8 *uuid_e, const u8 *dev_pw,
229				       size_t dev_pw_len)
230{
231	struct hostapd_data *hapd = ctx;
232	char uuid[40];
233	struct wps_stop_reg_data data;
234	if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
235		return;
236	wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
237		MAC2STR(mac_addr), uuid);
238	if (hapd->wps_reg_success_cb)
239		hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
240					 mac_addr, uuid_e);
241	data.current_hapd = hapd;
242	data.uuid_e = uuid_e;
243	data.dev_pw = dev_pw;
244	data.dev_pw_len = dev_pw_len;
245	hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
246}
247
248
249static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
250					 const u8 *uuid_e,
251					 const u8 *pri_dev_type,
252					 u16 config_methods,
253					 u16 dev_password_id, u8 request_type,
254					 const char *dev_name)
255{
256	struct hostapd_data *hapd = ctx;
257	char uuid[40];
258	char devtype[WPS_DEV_TYPE_BUFSIZE];
259	if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
260		return;
261	if (dev_name == NULL)
262		dev_name = "";
263	wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
264		     " %s %s 0x%x %u %u [%s]",
265		     MAC2STR(addr), uuid,
266		     wps_dev_type_bin2str(pri_dev_type, devtype,
267					  sizeof(devtype)),
268		     config_methods, dev_password_id, request_type, dev_name);
269}
270
271
272static int str_starts(const char *str, const char *start)
273{
274	return os_strncmp(str, start, os_strlen(start)) == 0;
275}
276
277
278static void wps_reload_config(void *eloop_data, void *user_ctx)
279{
280	struct hostapd_iface *iface = eloop_data;
281
282	wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
283	if (iface->interfaces == NULL ||
284	    iface->interfaces->reload_config(iface) < 0) {
285		wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
286			   "configuration");
287	}
288}
289
290
291void hostapd_wps_eap_completed(struct hostapd_data *hapd)
292{
293	/*
294	 * Reduce race condition of the station trying to reconnect immediately
295	 * after AP reconfiguration through WPS by rescheduling the reload
296	 * timeout to happen after EAP completion rather than the originally
297	 * scheduled 100 ms after new configuration became known.
298	 */
299	if (eloop_deplete_timeout(0, 0, wps_reload_config, hapd->iface, NULL) ==
300	    1)
301		wpa_printf(MSG_DEBUG, "WPS: Reschedule immediate configuration reload");
302}
303
304
305static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
306			      size_t attr_len)
307{
308	size_t blen = attr_len * 2 + 1;
309	char *buf = os_malloc(blen);
310	if (buf) {
311		wpa_snprintf_hex(buf, blen, attr, attr_len);
312		wpa_msg(hapd->msg_ctx, MSG_INFO,
313			WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
314		os_free(buf);
315	}
316}
317
318
319static int hapd_wps_reconfig_in_memory(struct hostapd_data *hapd,
320				       const struct wps_credential *cred)
321{
322	struct hostapd_bss_config *bss = hapd->conf;
323
324	wpa_printf(MSG_DEBUG, "WPS: Updating in-memory configuration");
325
326	bss->wps_state = 2;
327	if (cred->ssid_len <= SSID_MAX_LEN) {
328		os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len);
329		bss->ssid.ssid_len = cred->ssid_len;
330		bss->ssid.ssid_set = 1;
331	}
332
333	if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
334	    (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
335		bss->wpa = 3;
336	else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
337		bss->wpa = 2;
338	else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
339		bss->wpa = 1;
340	else
341		bss->wpa = 0;
342
343	if (bss->wpa) {
344		if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA))
345			bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X;
346		if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
347			bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
348
349		bss->wpa_pairwise = 0;
350		if (cred->encr_type & WPS_ENCR_AES) {
351			if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
352				bss->wpa_pairwise |= WPA_CIPHER_GCMP;
353			else
354				bss->wpa_pairwise |= WPA_CIPHER_CCMP;
355		}
356		if (cred->encr_type & WPS_ENCR_TKIP)
357			bss->wpa_pairwise |= WPA_CIPHER_TKIP;
358		bss->rsn_pairwise = bss->wpa_pairwise;
359		bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
360							    bss->wpa_pairwise,
361							    bss->rsn_pairwise);
362
363		if (cred->key_len >= 8 && cred->key_len < 64) {
364			os_free(bss->ssid.wpa_passphrase);
365			bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1);
366			if (bss->ssid.wpa_passphrase)
367				os_memcpy(bss->ssid.wpa_passphrase, cred->key,
368					  cred->key_len);
369			hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk);
370		} else if (cred->key_len == 64) {
371			hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk);
372			bss->ssid.wpa_psk =
373				os_zalloc(sizeof(struct hostapd_wpa_psk));
374			if (bss->ssid.wpa_psk &&
375			    hexstr2bin((const char *) cred->key,
376				       bss->ssid.wpa_psk->psk, PMK_LEN) == 0) {
377				bss->ssid.wpa_psk->group = 1;
378				os_free(bss->ssid.wpa_passphrase);
379				bss->ssid.wpa_passphrase = NULL;
380			}
381		}
382		bss->auth_algs = 1;
383	} else {
384		/*
385		 * WPS 2.0 does not allow WEP to be configured, so no need to
386		 * process that option here either.
387		 */
388		bss->auth_algs = 1;
389	}
390
391	/* Schedule configuration reload after short period of time to allow
392	 * EAP-WSC to be finished.
393	 */
394	eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
395			       NULL);
396
397	return 0;
398}
399
400
401static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
402{
403	const struct wps_credential *cred = ctx;
404	FILE *oconf, *nconf;
405	size_t len, i;
406	char *tmp_fname;
407	char buf[1024];
408	int multi_bss;
409	int wpa;
410
411	if (hapd->wps == NULL)
412		return 0;
413
414	wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
415			cred->cred_attr, cred->cred_attr_len);
416
417	wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
418	wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
419	wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
420		   cred->auth_type);
421	wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
422	wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
423	wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
424			cred->key, cred->key_len);
425	wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
426		   MAC2STR(cred->mac_addr));
427
428	if ((hapd->conf->wps_cred_processing == 1 ||
429	     hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
430		hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len);
431	} else if (hapd->conf->wps_cred_processing == 1 ||
432		   hapd->conf->wps_cred_processing == 2) {
433		struct wpabuf *attr;
434		attr = wpabuf_alloc(200);
435		if (attr && wps_build_credential_wrap(attr, cred) == 0)
436			hapd_new_ap_event(hapd, wpabuf_head_u8(attr),
437					  wpabuf_len(attr));
438		wpabuf_free(attr);
439	} else
440		wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
441
442	if (hapd->conf->wps_cred_processing == 1)
443		return 0;
444
445	os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
446	hapd->wps->ssid_len = cred->ssid_len;
447	hapd->wps->encr_types = cred->encr_type;
448	hapd->wps->auth_types = cred->auth_type;
449	hapd->wps->ap_encr_type = cred->encr_type;
450	hapd->wps->ap_auth_type = cred->auth_type;
451	if (cred->key_len == 0) {
452		os_free(hapd->wps->network_key);
453		hapd->wps->network_key = NULL;
454		hapd->wps->network_key_len = 0;
455	} else {
456		if (hapd->wps->network_key == NULL ||
457		    hapd->wps->network_key_len < cred->key_len) {
458			hapd->wps->network_key_len = 0;
459			os_free(hapd->wps->network_key);
460			hapd->wps->network_key = os_malloc(cred->key_len);
461			if (hapd->wps->network_key == NULL)
462				return -1;
463		}
464		hapd->wps->network_key_len = cred->key_len;
465		os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
466	}
467	hapd->wps->wps_state = WPS_STATE_CONFIGURED;
468
469	if (hapd->iface->config_fname == NULL)
470		return hapd_wps_reconfig_in_memory(hapd, cred);
471	len = os_strlen(hapd->iface->config_fname) + 5;
472	tmp_fname = os_malloc(len);
473	if (tmp_fname == NULL)
474		return -1;
475	os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
476
477	oconf = fopen(hapd->iface->config_fname, "r");
478	if (oconf == NULL) {
479		wpa_printf(MSG_WARNING, "WPS: Could not open current "
480			   "configuration file");
481		os_free(tmp_fname);
482		return -1;
483	}
484
485	nconf = fopen(tmp_fname, "w");
486	if (nconf == NULL) {
487		wpa_printf(MSG_WARNING, "WPS: Could not write updated "
488			   "configuration file");
489		os_free(tmp_fname);
490		fclose(oconf);
491		return -1;
492	}
493
494	fprintf(nconf, "# WPS configuration - START\n");
495
496	fprintf(nconf, "wps_state=2\n");
497
498	if (is_hex(cred->ssid, cred->ssid_len)) {
499		fprintf(nconf, "ssid2=");
500		for (i = 0; i < cred->ssid_len; i++)
501			fprintf(nconf, "%02x", cred->ssid[i]);
502		fprintf(nconf, "\n");
503	} else {
504		fprintf(nconf, "ssid=");
505		for (i = 0; i < cred->ssid_len; i++)
506			fputc(cred->ssid[i], nconf);
507		fprintf(nconf, "\n");
508	}
509
510	if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
511	    (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
512		wpa = 3;
513	else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
514		wpa = 2;
515	else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
516		wpa = 1;
517	else
518		wpa = 0;
519
520	if (wpa) {
521		char *prefix;
522		fprintf(nconf, "wpa=%d\n", wpa);
523
524		fprintf(nconf, "wpa_key_mgmt=");
525		prefix = "";
526		if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
527			fprintf(nconf, "WPA-EAP");
528			prefix = " ";
529		}
530		if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
531			fprintf(nconf, "%sWPA-PSK", prefix);
532		fprintf(nconf, "\n");
533
534		fprintf(nconf, "wpa_pairwise=");
535		prefix = "";
536		if (cred->encr_type & WPS_ENCR_AES) {
537			if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
538				fprintf(nconf, "GCMP");
539			else
540				fprintf(nconf, "CCMP");
541
542			prefix = " ";
543		}
544		if (cred->encr_type & WPS_ENCR_TKIP) {
545			fprintf(nconf, "%sTKIP", prefix);
546		}
547		fprintf(nconf, "\n");
548
549		if (cred->key_len >= 8 && cred->key_len < 64) {
550			fprintf(nconf, "wpa_passphrase=");
551			for (i = 0; i < cred->key_len; i++)
552				fputc(cred->key[i], nconf);
553			fprintf(nconf, "\n");
554		} else if (cred->key_len == 64) {
555			fprintf(nconf, "wpa_psk=");
556			for (i = 0; i < cred->key_len; i++)
557				fputc(cred->key[i], nconf);
558			fprintf(nconf, "\n");
559		} else {
560			wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
561				   "for WPA/WPA2",
562				   (unsigned long) cred->key_len);
563		}
564
565		fprintf(nconf, "auth_algs=1\n");
566	} else {
567		/*
568		 * WPS 2.0 does not allow WEP to be configured, so no need to
569		 * process that option here either.
570		 */
571		fprintf(nconf, "auth_algs=1\n");
572	}
573
574	fprintf(nconf, "# WPS configuration - END\n");
575
576	multi_bss = 0;
577	while (fgets(buf, sizeof(buf), oconf)) {
578		if (os_strncmp(buf, "bss=", 4) == 0)
579			multi_bss = 1;
580		if (!multi_bss &&
581		    (str_starts(buf, "ssid=") ||
582		     str_starts(buf, "ssid2=") ||
583		     str_starts(buf, "auth_algs=") ||
584		     str_starts(buf, "wep_default_key=") ||
585		     str_starts(buf, "wep_key") ||
586		     str_starts(buf, "wps_state=") ||
587		     str_starts(buf, "wpa=") ||
588		     str_starts(buf, "wpa_psk=") ||
589		     str_starts(buf, "wpa_pairwise=") ||
590		     str_starts(buf, "rsn_pairwise=") ||
591		     str_starts(buf, "wpa_key_mgmt=") ||
592		     str_starts(buf, "wpa_passphrase="))) {
593			fprintf(nconf, "#WPS# %s", buf);
594		} else
595			fprintf(nconf, "%s", buf);
596	}
597
598	fclose(nconf);
599	fclose(oconf);
600
601	if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
602		wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
603			   "configuration file: %s", strerror(errno));
604		os_free(tmp_fname);
605		return -1;
606	}
607
608	os_free(tmp_fname);
609
610	/* Schedule configuration reload after short period of time to allow
611	 * EAP-WSC to be finished.
612	 */
613	eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
614			       NULL);
615
616	wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
617
618	return 0;
619}
620
621
622static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
623{
624	struct hostapd_data *hapd = ctx;
625	return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
626}
627
628
629static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
630{
631	struct hostapd_data *hapd = eloop_data;
632
633	if (hapd->conf->ap_setup_locked)
634		return;
635	if (hapd->ap_pin_failures_consecutive >= 10)
636		return;
637
638	wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
639	wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
640	hapd->wps->ap_setup_locked = 0;
641	wps_registrar_update_ie(hapd->wps->registrar);
642}
643
644
645static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
646{
647	struct wps_event_pwd_auth_fail *data = ctx;
648
649	if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
650		return 0;
651
652	/*
653	 * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
654	 * for some time if this happens multiple times to slow down brute
655	 * force attacks.
656	 */
657	hapd->ap_pin_failures++;
658	hapd->ap_pin_failures_consecutive++;
659	wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
660		   "(%u consecutive)",
661		   hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
662	if (hapd->ap_pin_failures < 3)
663		return 0;
664
665	wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
666	hapd->wps->ap_setup_locked = 1;
667
668	wps_registrar_update_ie(hapd->wps->registrar);
669
670	if (!hapd->conf->ap_setup_locked &&
671	    hapd->ap_pin_failures_consecutive >= 10) {
672		/*
673		 * In indefinite lockdown - disable automatic AP PIN
674		 * reenablement.
675		 */
676		eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
677		wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
678	} else if (!hapd->conf->ap_setup_locked) {
679		if (hapd->ap_pin_lockout_time == 0)
680			hapd->ap_pin_lockout_time = 60;
681		else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
682			 (hapd->ap_pin_failures % 3) == 0)
683			hapd->ap_pin_lockout_time *= 2;
684
685		wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
686			   hapd->ap_pin_lockout_time);
687		eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
688		eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
689				       hostapd_wps_reenable_ap_pin, hapd,
690				       NULL);
691	}
692
693	return 0;
694}
695
696
697static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
698				  struct wps_event_pwd_auth_fail *data)
699{
700	/* Update WPS Status - Authentication Failure */
701	wpa_printf(MSG_DEBUG, "WPS: Authentication failure update");
702	hapd->wps_stats.status = WPS_STATUS_FAILURE;
703	hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE;
704	os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN);
705
706	hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
707}
708
709
710static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
711{
712	if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
713		return 0;
714
715	if (hapd->ap_pin_failures_consecutive == 0)
716		return 0;
717
718	wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
719		   "- total validation failures %u (%u consecutive)",
720		   hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
721	hapd->ap_pin_failures_consecutive = 0;
722
723	return 0;
724}
725
726
727static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
728{
729	hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
730}
731
732
733static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd)
734{
735	/* Update WPS Status - PBC Overlap */
736	hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP;
737}
738
739
740static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd)
741{
742	/* Update WPS PBC Status:PBC Timeout */
743	hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT;
744}
745
746
747static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd)
748{
749	/* Update WPS PBC status - Active */
750	hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE;
751}
752
753
754static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd)
755{
756	/* Update WPS PBC status - Active */
757	hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
758}
759
760
761static void hostapd_wps_event_success(struct hostapd_data *hapd,
762				      struct wps_event_success *success)
763{
764	/* Update WPS status - Success */
765	hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
766	hapd->wps_stats.status = WPS_STATUS_SUCCESS;
767	os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN);
768}
769
770
771static void hostapd_wps_event_fail(struct hostapd_data *hapd,
772				   struct wps_event_fail *fail)
773{
774	/* Update WPS status - Failure */
775	hapd->wps_stats.status = WPS_STATUS_FAILURE;
776	os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN);
777
778	hapd->wps_stats.failure_reason = fail->error_indication;
779
780	if (fail->error_indication > 0 &&
781	    fail->error_indication < NUM_WPS_EI_VALUES) {
782		wpa_msg(hapd->msg_ctx, MSG_INFO,
783			WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
784			fail->msg, fail->config_error, fail->error_indication,
785			wps_ei_str(fail->error_indication));
786	} else {
787		wpa_msg(hapd->msg_ctx, MSG_INFO,
788			WPS_EVENT_FAIL "msg=%d config_error=%d",
789			fail->msg, fail->config_error);
790	}
791}
792
793
794static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
795				 union wps_event_data *data)
796{
797	struct hostapd_data *hapd = ctx;
798
799	switch (event) {
800	case WPS_EV_M2D:
801		wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
802		break;
803	case WPS_EV_FAIL:
804		hostapd_wps_event_fail(hapd, &data->fail);
805		break;
806	case WPS_EV_SUCCESS:
807		hostapd_wps_event_success(hapd, &data->success);
808		wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
809		break;
810	case WPS_EV_PWD_AUTH_FAIL:
811		hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
812		break;
813	case WPS_EV_PBC_OVERLAP:
814		hostapd_wps_event_pbc_overlap(hapd);
815		wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
816		break;
817	case WPS_EV_PBC_TIMEOUT:
818		hostapd_wps_event_pbc_timeout(hapd);
819		wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
820		break;
821	case WPS_EV_PBC_ACTIVE:
822		hostapd_wps_event_pbc_active(hapd);
823		wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE);
824		break;
825	case WPS_EV_PBC_DISABLE:
826		hostapd_wps_event_pbc_disable(hapd);
827		wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE);
828		break;
829	case WPS_EV_ER_AP_ADD:
830		break;
831	case WPS_EV_ER_AP_REMOVE:
832		break;
833	case WPS_EV_ER_ENROLLEE_ADD:
834		break;
835	case WPS_EV_ER_ENROLLEE_REMOVE:
836		break;
837	case WPS_EV_ER_AP_SETTINGS:
838		break;
839	case WPS_EV_ER_SET_SELECTED_REGISTRAR:
840		break;
841	case WPS_EV_AP_PIN_SUCCESS:
842		hostapd_wps_ap_pin_success(hapd);
843		break;
844	}
845	if (hapd->wps_event_cb)
846		hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
847}
848
849
850static int hostapd_wps_rf_band_cb(void *ctx)
851{
852	struct hostapd_data *hapd = ctx;
853
854	return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
855		WPS_RF_50GHZ :
856		hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ?
857		WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
858}
859
860
861static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only)
862{
863	wpabuf_free(hapd->wps_beacon_ie);
864	hapd->wps_beacon_ie = NULL;
865
866	wpabuf_free(hapd->wps_probe_resp_ie);
867	hapd->wps_probe_resp_ie = NULL;
868
869	if (deinit_only) {
870		hostapd_reset_ap_wps_ie(hapd);
871		return;
872	}
873
874	hostapd_set_ap_wps_ie(hapd);
875}
876
877
878static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
879{
880	const u8 **uuid = ctx;
881	size_t j;
882
883	if (iface == NULL)
884		return 0;
885	for (j = 0; j < iface->num_bss; j++) {
886		struct hostapd_data *hapd = iface->bss[j];
887		if (hapd->wps && !hapd->conf->wps_independent &&
888		    !is_nil_uuid(hapd->wps->uuid)) {
889			*uuid = hapd->wps->uuid;
890			return 1;
891		}
892	}
893
894	return 0;
895}
896
897
898static const u8 * get_own_uuid(struct hostapd_iface *iface)
899{
900	const u8 *uuid;
901	if (iface->interfaces == NULL ||
902	    iface->interfaces->for_each_interface == NULL)
903		return NULL;
904	uuid = NULL;
905	iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
906					      &uuid);
907	return uuid;
908}
909
910
911static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
912{
913	int *count= ctx;
914	(*count)++;
915	return 0;
916}
917
918
919static int interface_count(struct hostapd_iface *iface)
920{
921	int count = 0;
922	if (iface->interfaces == NULL ||
923	    iface->interfaces->for_each_interface == NULL)
924		return 0;
925	iface->interfaces->for_each_interface(iface->interfaces,
926					      count_interface_cb, &count);
927	return count;
928}
929
930
931static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
932				      struct wps_context *wps)
933{
934	int i;
935
936	for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
937		wpabuf_free(wps->dev.vendor_ext[i]);
938		wps->dev.vendor_ext[i] = NULL;
939
940		if (hapd->conf->wps_vendor_ext[i] == NULL)
941			continue;
942
943		wps->dev.vendor_ext[i] =
944			wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
945		if (wps->dev.vendor_ext[i] == NULL) {
946			while (--i >= 0)
947				wpabuf_free(wps->dev.vendor_ext[i]);
948			return -1;
949		}
950	}
951
952	return 0;
953}
954
955
956static void hostapd_free_wps(struct wps_context *wps)
957{
958	int i;
959
960	for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
961		wpabuf_free(wps->dev.vendor_ext[i]);
962	wps_device_data_free(&wps->dev);
963	os_free(wps->network_key);
964	hostapd_wps_nfc_clear(wps);
965	wpabuf_free(wps->dh_pubkey);
966	wpabuf_free(wps->dh_privkey);
967	os_free(wps);
968}
969
970
971int hostapd_init_wps(struct hostapd_data *hapd,
972		     struct hostapd_bss_config *conf)
973{
974	struct wps_context *wps;
975	struct wps_registrar_config cfg;
976
977	if (conf->wps_state == 0) {
978		hostapd_wps_clear_ies(hapd, 0);
979		return 0;
980	}
981
982	wps = os_zalloc(sizeof(*wps));
983	if (wps == NULL)
984		return -1;
985
986	wps->cred_cb = hostapd_wps_cred_cb;
987	wps->event_cb = hostapd_wps_event_cb;
988	wps->rf_band_cb = hostapd_wps_rf_band_cb;
989	wps->cb_ctx = hapd;
990
991	os_memset(&cfg, 0, sizeof(cfg));
992	wps->wps_state = hapd->conf->wps_state;
993	wps->ap_setup_locked = hapd->conf->ap_setup_locked;
994	if (is_nil_uuid(hapd->conf->uuid)) {
995		const u8 *uuid;
996		uuid = get_own_uuid(hapd->iface);
997		if (uuid && !conf->wps_independent) {
998			os_memcpy(wps->uuid, uuid, UUID_LEN);
999			wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
1000				    "interface", wps->uuid, UUID_LEN);
1001		} else {
1002			uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
1003			wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1004				    "address", wps->uuid, UUID_LEN);
1005		}
1006	} else {
1007		os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
1008		wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
1009			    wps->uuid, UUID_LEN);
1010	}
1011	wps->ssid_len = hapd->conf->ssid.ssid_len;
1012	os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
1013	wps->ap = 1;
1014	os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
1015	wps->dev.device_name = hapd->conf->device_name ?
1016		os_strdup(hapd->conf->device_name) : NULL;
1017	wps->dev.manufacturer = hapd->conf->manufacturer ?
1018		os_strdup(hapd->conf->manufacturer) : NULL;
1019	wps->dev.model_name = hapd->conf->model_name ?
1020		os_strdup(hapd->conf->model_name) : NULL;
1021	wps->dev.model_number = hapd->conf->model_number ?
1022		os_strdup(hapd->conf->model_number) : NULL;
1023	wps->dev.serial_number = hapd->conf->serial_number ?
1024		os_strdup(hapd->conf->serial_number) : NULL;
1025	wps->config_methods =
1026		wps_config_methods_str2bin(hapd->conf->config_methods);
1027	if ((wps->config_methods &
1028	     (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1029	      WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1030		wpa_printf(MSG_INFO, "WPS: Converting display to "
1031			   "virtual_display for WPS 2.0 compliance");
1032		wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1033	}
1034	if ((wps->config_methods &
1035	     (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1036	      WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1037		wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1038			   "virtual_push_button for WPS 2.0 compliance");
1039		wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1040	}
1041	os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
1042		  WPS_DEV_TYPE_LEN);
1043
1044	if (hostapd_wps_set_vendor_ext(hapd, wps) < 0)
1045		goto fail;
1046
1047	wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
1048
1049	if (conf->wps_rf_bands) {
1050		wps->dev.rf_bands = conf->wps_rf_bands;
1051	} else {
1052		wps->dev.rf_bands =
1053			hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
1054			WPS_RF_50GHZ :
1055			hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ?
1056			WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
1057	}
1058
1059	if (conf->wpa & WPA_PROTO_RSN) {
1060		if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1061			wps->auth_types |= WPS_AUTH_WPA2PSK;
1062		if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1063			wps->auth_types |= WPS_AUTH_WPA2;
1064
1065		if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP))
1066			wps->encr_types |= WPS_ENCR_AES;
1067		if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
1068			wps->encr_types |= WPS_ENCR_TKIP;
1069	}
1070
1071	if (conf->wpa & WPA_PROTO_WPA) {
1072		if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1073			wps->auth_types |= WPS_AUTH_WPAPSK;
1074		if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1075			wps->auth_types |= WPS_AUTH_WPA;
1076
1077		if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
1078			wps->encr_types |= WPS_ENCR_AES;
1079		if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
1080			wps->encr_types |= WPS_ENCR_TKIP;
1081	}
1082
1083	if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
1084		wps->encr_types |= WPS_ENCR_NONE;
1085		wps->auth_types |= WPS_AUTH_OPEN;
1086	}
1087
1088	if (conf->ssid.wpa_psk_file) {
1089		/* Use per-device PSKs */
1090	} else if (conf->ssid.wpa_passphrase) {
1091		wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
1092		wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
1093	} else if (conf->ssid.wpa_psk) {
1094		wps->network_key = os_malloc(2 * PMK_LEN + 1);
1095		if (wps->network_key == NULL)
1096			goto fail;
1097		wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
1098				 conf->ssid.wpa_psk->psk, PMK_LEN);
1099		wps->network_key_len = 2 * PMK_LEN;
1100	} else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
1101		wps->network_key = os_malloc(conf->ssid.wep.len[0]);
1102		if (wps->network_key == NULL)
1103			goto fail;
1104		os_memcpy(wps->network_key, conf->ssid.wep.key[0],
1105			  conf->ssid.wep.len[0]);
1106		wps->network_key_len = conf->ssid.wep.len[0];
1107	}
1108
1109	if (conf->ssid.wpa_psk) {
1110		os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
1111		wps->psk_set = 1;
1112	}
1113
1114	wps->ap_auth_type = wps->auth_types;
1115	wps->ap_encr_type = wps->encr_types;
1116	if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
1117		/* Override parameters to enable security by default */
1118		wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1119		wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1120	}
1121
1122	wps->ap_settings = conf->ap_settings;
1123	wps->ap_settings_len = conf->ap_settings_len;
1124
1125	cfg.new_psk_cb = hostapd_wps_new_psk_cb;
1126	cfg.set_ie_cb = hostapd_wps_set_ie_cb;
1127	cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
1128	cfg.reg_success_cb = hostapd_wps_reg_success_cb;
1129	cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
1130	cfg.cb_ctx = hapd;
1131	cfg.skip_cred_build = conf->skip_cred_build;
1132	cfg.extra_cred = conf->extra_cred;
1133	cfg.extra_cred_len = conf->extra_cred_len;
1134	cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
1135		conf->skip_cred_build;
1136	if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
1137		cfg.static_wep_only = 1;
1138	cfg.dualband = interface_count(hapd->iface) > 1;
1139	if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) ==
1140	    (WPS_RF_50GHZ | WPS_RF_24GHZ))
1141		cfg.dualband = 1;
1142	if (cfg.dualband)
1143		wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
1144	cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk;
1145
1146	wps->registrar = wps_registrar_init(wps, &cfg);
1147	if (wps->registrar == NULL) {
1148		wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
1149		goto fail;
1150	}
1151
1152#ifdef CONFIG_WPS_UPNP
1153	wps->friendly_name = hapd->conf->friendly_name;
1154	wps->manufacturer_url = hapd->conf->manufacturer_url;
1155	wps->model_description = hapd->conf->model_description;
1156	wps->model_url = hapd->conf->model_url;
1157	wps->upc = hapd->conf->upc;
1158#endif /* CONFIG_WPS_UPNP */
1159
1160	hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
1161
1162	hapd->wps = wps;
1163
1164	return 0;
1165
1166fail:
1167	hostapd_free_wps(wps);
1168	return -1;
1169}
1170
1171
1172int hostapd_init_wps_complete(struct hostapd_data *hapd)
1173{
1174	struct wps_context *wps = hapd->wps;
1175
1176	if (wps == NULL)
1177		return 0;
1178
1179#ifdef CONFIG_WPS_UPNP
1180	if (hostapd_wps_upnp_init(hapd, wps) < 0) {
1181		wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
1182		wps_registrar_deinit(wps->registrar);
1183		hostapd_free_wps(wps);
1184		hapd->wps = NULL;
1185		return -1;
1186	}
1187#endif /* CONFIG_WPS_UPNP */
1188
1189	return 0;
1190}
1191
1192
1193static void hostapd_wps_nfc_clear(struct wps_context *wps)
1194{
1195#ifdef CONFIG_WPS_NFC
1196	wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps);
1197	wps->ap_nfc_dev_pw_id = 0;
1198	wpabuf_free(wps->ap_nfc_dh_pubkey);
1199	wps->ap_nfc_dh_pubkey = NULL;
1200	wpabuf_free(wps->ap_nfc_dh_privkey);
1201	wps->ap_nfc_dh_privkey = NULL;
1202	wpabuf_free(wps->ap_nfc_dev_pw);
1203	wps->ap_nfc_dev_pw = NULL;
1204#endif /* CONFIG_WPS_NFC */
1205}
1206
1207
1208void hostapd_deinit_wps(struct hostapd_data *hapd)
1209{
1210	eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1211	eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1212	eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL);
1213	if (hapd->wps == NULL) {
1214		hostapd_wps_clear_ies(hapd, 1);
1215		return;
1216	}
1217#ifdef CONFIG_WPS_UPNP
1218	hostapd_wps_upnp_deinit(hapd);
1219#endif /* CONFIG_WPS_UPNP */
1220	wps_registrar_deinit(hapd->wps->registrar);
1221	wps_free_pending_msgs(hapd->wps->upnp_msgs);
1222	hostapd_free_wps(hapd->wps);
1223	hapd->wps = NULL;
1224	hostapd_wps_clear_ies(hapd, 1);
1225}
1226
1227
1228void hostapd_update_wps(struct hostapd_data *hapd)
1229{
1230	if (hapd->wps == NULL)
1231		return;
1232
1233#ifdef CONFIG_WPS_UPNP
1234	hapd->wps->friendly_name = hapd->conf->friendly_name;
1235	hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1236	hapd->wps->model_description = hapd->conf->model_description;
1237	hapd->wps->model_url = hapd->conf->model_url;
1238	hapd->wps->upc = hapd->conf->upc;
1239#endif /* CONFIG_WPS_UPNP */
1240
1241	hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1242
1243	if (hapd->conf->wps_state)
1244		wps_registrar_update_ie(hapd->wps->registrar);
1245	else
1246		hostapd_deinit_wps(hapd);
1247}
1248
1249
1250struct wps_add_pin_data {
1251	const u8 *addr;
1252	const u8 *uuid;
1253	const u8 *pin;
1254	size_t pin_len;
1255	int timeout;
1256	int added;
1257};
1258
1259
1260static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1261{
1262	struct wps_add_pin_data *data = ctx;
1263	int ret;
1264
1265	if (hapd->wps == NULL)
1266		return 0;
1267	ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1268				    data->uuid, data->pin, data->pin_len,
1269				    data->timeout);
1270	if (ret == 0)
1271		data->added++;
1272	return ret;
1273}
1274
1275
1276int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1277			const char *uuid, const char *pin, int timeout)
1278{
1279	u8 u[UUID_LEN];
1280	struct wps_add_pin_data data;
1281
1282	data.addr = addr;
1283	data.uuid = u;
1284	data.pin = (const u8 *) pin;
1285	data.pin_len = os_strlen(pin);
1286	data.timeout = timeout;
1287	data.added = 0;
1288
1289	if (os_strcmp(uuid, "any") == 0)
1290		data.uuid = NULL;
1291	else {
1292		if (uuid_str2bin(uuid, u))
1293			return -1;
1294		data.uuid = u;
1295	}
1296	if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1297		return -1;
1298	return data.added ? 0 : -1;
1299}
1300
1301
1302static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1303{
1304	const u8 *p2p_dev_addr = ctx;
1305	if (hapd->wps == NULL)
1306		return -1;
1307	return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1308}
1309
1310
1311int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1312			      const u8 *p2p_dev_addr)
1313{
1314	return hostapd_wps_for_each(hapd, wps_button_pushed,
1315				    (void *) p2p_dev_addr);
1316}
1317
1318
1319static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1320{
1321	if (hapd->wps == NULL)
1322		return -1;
1323
1324	wps_registrar_wps_cancel(hapd->wps->registrar);
1325	ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1326
1327	return 0;
1328}
1329
1330
1331int hostapd_wps_cancel(struct hostapd_data *hapd)
1332{
1333	return hostapd_wps_for_each(hapd, wps_cancel, NULL);
1334}
1335
1336
1337static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1338				    const u8 *bssid,
1339				    const u8 *ie, size_t ie_len,
1340				    int ssi_signal)
1341{
1342	struct hostapd_data *hapd = ctx;
1343	struct wpabuf *wps_ie;
1344	struct ieee802_11_elems elems;
1345
1346	if (hapd->wps == NULL)
1347		return 0;
1348
1349	if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1350		wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1351			   MACSTR, MAC2STR(addr));
1352		return 0;
1353	}
1354
1355	if (elems.ssid && elems.ssid_len > 0 &&
1356	    (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1357	     os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1358	     0))
1359		return 0; /* Not for us */
1360
1361	wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1362	if (wps_ie == NULL)
1363		return 0;
1364	if (wps_validate_probe_req(wps_ie, addr) < 0) {
1365		wpabuf_free(wps_ie);
1366		return 0;
1367	}
1368
1369	if (wpabuf_len(wps_ie) > 0) {
1370		int p2p_wildcard = 0;
1371#ifdef CONFIG_P2P
1372		if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1373		    os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1374			      P2P_WILDCARD_SSID_LEN) == 0)
1375			p2p_wildcard = 1;
1376#endif /* CONFIG_P2P */
1377		wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1378					   p2p_wildcard);
1379#ifdef CONFIG_WPS_UPNP
1380		/* FIX: what exactly should be included in the WLANEvent?
1381		 * WPS attributes? Full ProbeReq frame? */
1382		if (!p2p_wildcard)
1383			upnp_wps_device_send_wlan_event(
1384				hapd->wps_upnp, addr,
1385				UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1386#endif /* CONFIG_WPS_UPNP */
1387	}
1388
1389	wpabuf_free(wps_ie);
1390
1391	return 0;
1392}
1393
1394
1395#ifdef CONFIG_WPS_UPNP
1396
1397static int hostapd_rx_req_put_wlan_response(
1398	void *priv, enum upnp_wps_wlanevent_type ev_type,
1399	const u8 *mac_addr, const struct wpabuf *msg,
1400	enum wps_msg_type msg_type)
1401{
1402	struct hostapd_data *hapd = priv;
1403	struct sta_info *sta;
1404	struct upnp_pending_message *p;
1405
1406	wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1407		   MACSTR, ev_type, MAC2STR(mac_addr));
1408	wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1409		    wpabuf_head(msg), wpabuf_len(msg));
1410	if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1411		wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1412			   "PutWLANResponse WLANEventType %d", ev_type);
1413		return -1;
1414	}
1415
1416	/*
1417	 * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1418	 * server implementation for delivery to the peer.
1419	 */
1420
1421	sta = ap_get_sta(hapd, mac_addr);
1422#ifndef CONFIG_WPS_STRICT
1423	if (!sta) {
1424		/*
1425		 * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1426		 * Pick STA that is in an ongoing WPS registration without
1427		 * checking the MAC address.
1428		 */
1429		wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1430			   "on NewWLANEventMAC; try wildcard match");
1431		for (sta = hapd->sta_list; sta; sta = sta->next) {
1432			if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1433				break;
1434		}
1435	}
1436#endif /* CONFIG_WPS_STRICT */
1437
1438	if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1439		wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1440		return 0;
1441	}
1442
1443	if (!sta->eapol_sm) {
1444		/*
1445		 * This can happen, e.g., if an ER sends an extra message after
1446		 * the station has disassociated (but not fully
1447		 * deauthenticated).
1448		 */
1449		wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized");
1450		return 0;
1451	}
1452
1453	p = os_zalloc(sizeof(*p));
1454	if (p == NULL)
1455		return -1;
1456	os_memcpy(p->addr, sta->addr, ETH_ALEN);
1457	p->msg = wpabuf_dup(msg);
1458	p->type = msg_type;
1459	p->next = hapd->wps->upnp_msgs;
1460	hapd->wps->upnp_msgs = p;
1461
1462	return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1463}
1464
1465
1466static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1467				 struct wps_context *wps)
1468{
1469	struct upnp_wps_device_ctx *ctx;
1470
1471	if (!hapd->conf->upnp_iface)
1472		return 0;
1473	ctx = os_zalloc(sizeof(*ctx));
1474	if (ctx == NULL)
1475		return -1;
1476
1477	ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1478	if (hapd->conf->ap_pin)
1479		ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1480
1481	hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1482					      hapd->conf->upnp_iface);
1483	if (hapd->wps_upnp == NULL)
1484		return -1;
1485	wps->wps_upnp = hapd->wps_upnp;
1486
1487	return 0;
1488}
1489
1490
1491static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1492{
1493	upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1494}
1495
1496#endif /* CONFIG_WPS_UPNP */
1497
1498
1499int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1500			    char *buf, size_t buflen)
1501{
1502	if (hapd->wps == NULL)
1503		return 0;
1504	return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1505}
1506
1507
1508static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1509{
1510	struct hostapd_data *hapd = eloop_data;
1511	wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1512	hostapd_wps_ap_pin_disable(hapd);
1513	wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1514}
1515
1516
1517static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1518{
1519	wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1520	hapd->ap_pin_failures = 0;
1521	hapd->ap_pin_failures_consecutive = 0;
1522	hapd->conf->ap_setup_locked = 0;
1523	if (hapd->wps->ap_setup_locked) {
1524		wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1525		hapd->wps->ap_setup_locked = 0;
1526		wps_registrar_update_ie(hapd->wps->registrar);
1527	}
1528	eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1529	if (timeout > 0)
1530		eloop_register_timeout(timeout, 0,
1531				       hostapd_wps_ap_pin_timeout, hapd, NULL);
1532}
1533
1534
1535static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1536{
1537	os_free(hapd->conf->ap_pin);
1538	hapd->conf->ap_pin = NULL;
1539#ifdef CONFIG_WPS_UPNP
1540	upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1541#endif /* CONFIG_WPS_UPNP */
1542	eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1543	return 0;
1544}
1545
1546
1547void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1548{
1549	wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1550	hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1551}
1552
1553
1554struct wps_ap_pin_data {
1555	char pin_txt[9];
1556	int timeout;
1557};
1558
1559
1560static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1561{
1562	struct wps_ap_pin_data *data = ctx;
1563	os_free(hapd->conf->ap_pin);
1564	hapd->conf->ap_pin = os_strdup(data->pin_txt);
1565#ifdef CONFIG_WPS_UPNP
1566	upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1567#endif /* CONFIG_WPS_UPNP */
1568	hostapd_wps_ap_pin_enable(hapd, data->timeout);
1569	return 0;
1570}
1571
1572
1573const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1574{
1575	unsigned int pin;
1576	struct wps_ap_pin_data data;
1577
1578	pin = wps_generate_pin();
1579	os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1580	data.timeout = timeout;
1581	hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1582	return hapd->conf->ap_pin;
1583}
1584
1585
1586const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1587{
1588	return hapd->conf->ap_pin;
1589}
1590
1591
1592int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1593			   int timeout)
1594{
1595	struct wps_ap_pin_data data;
1596	int ret;
1597
1598	ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1599	if (os_snprintf_error(sizeof(data.pin_txt), ret))
1600		return -1;
1601	data.timeout = timeout;
1602	return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1603}
1604
1605
1606static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1607{
1608	if (hapd->wps)
1609		wps_registrar_update_ie(hapd->wps->registrar);
1610	return 0;
1611}
1612
1613
1614void hostapd_wps_update_ie(struct hostapd_data *hapd)
1615{
1616	hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1617}
1618
1619
1620int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1621			  const char *auth, const char *encr, const char *key)
1622{
1623	struct wps_credential cred;
1624	size_t len;
1625
1626	os_memset(&cred, 0, sizeof(cred));
1627
1628	len = os_strlen(ssid);
1629	if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1630	    hexstr2bin(ssid, cred.ssid, len / 2))
1631		return -1;
1632	cred.ssid_len = len / 2;
1633
1634	if (os_strncmp(auth, "OPEN", 4) == 0)
1635		cred.auth_type = WPS_AUTH_OPEN;
1636	else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1637		cred.auth_type = WPS_AUTH_WPAPSK;
1638	else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1639		cred.auth_type = WPS_AUTH_WPA2PSK;
1640	else
1641		return -1;
1642
1643	if (encr) {
1644		if (os_strncmp(encr, "NONE", 4) == 0)
1645			cred.encr_type = WPS_ENCR_NONE;
1646		else if (os_strncmp(encr, "TKIP", 4) == 0)
1647			cred.encr_type = WPS_ENCR_TKIP;
1648		else if (os_strncmp(encr, "CCMP", 4) == 0)
1649			cred.encr_type = WPS_ENCR_AES;
1650		else
1651			return -1;
1652	} else
1653		cred.encr_type = WPS_ENCR_NONE;
1654
1655	if (key) {
1656		len = os_strlen(key);
1657		if ((len & 1) || len > 2 * sizeof(cred.key) ||
1658		    hexstr2bin(key, cred.key, len / 2))
1659			return -1;
1660		cred.key_len = len / 2;
1661	}
1662
1663	return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1664}
1665
1666
1667#ifdef CONFIG_WPS_NFC
1668
1669struct wps_nfc_password_token_data {
1670	const u8 *oob_dev_pw;
1671	size_t oob_dev_pw_len;
1672	int added;
1673};
1674
1675
1676static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1677{
1678	struct wps_nfc_password_token_data *data = ctx;
1679	int ret;
1680
1681	if (hapd->wps == NULL)
1682		return 0;
1683	ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1684						   data->oob_dev_pw,
1685						   data->oob_dev_pw_len);
1686	if (ret == 0)
1687		data->added++;
1688	return ret;
1689}
1690
1691
1692static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1693					      struct wps_parse_attr *attr)
1694{
1695	struct wps_nfc_password_token_data data;
1696
1697	data.oob_dev_pw = attr->oob_dev_password;
1698	data.oob_dev_pw_len = attr->oob_dev_password_len;
1699	data.added = 0;
1700	if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1701		return -1;
1702	return data.added ? 0 : -1;
1703}
1704
1705
1706static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1707				       const struct wpabuf *wps)
1708{
1709	struct wps_parse_attr attr;
1710
1711	wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1712
1713	if (wps_parse_msg(wps, &attr)) {
1714		wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1715		return -1;
1716	}
1717
1718	if (attr.oob_dev_password)
1719		return hostapd_wps_add_nfc_password_token(hapd, &attr);
1720
1721	wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1722	return -1;
1723}
1724
1725
1726int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1727			     const struct wpabuf *data)
1728{
1729	const struct wpabuf *wps = data;
1730	struct wpabuf *tmp = NULL;
1731	int ret;
1732
1733	if (wpabuf_len(data) < 4)
1734		return -1;
1735
1736	if (*wpabuf_head_u8(data) != 0x10) {
1737		/* Assume this contains full NDEF record */
1738		tmp = ndef_parse_wifi(data);
1739		if (tmp == NULL) {
1740			wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1741			return -1;
1742		}
1743		wps = tmp;
1744	}
1745
1746	ret = hostapd_wps_nfc_tag_process(hapd, wps);
1747	wpabuf_free(tmp);
1748	return ret;
1749}
1750
1751
1752struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1753					     int ndef)
1754{
1755	struct wpabuf *ret;
1756
1757	if (hapd->wps == NULL)
1758		return NULL;
1759
1760	ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd),
1761			       hapd->iconf->channel);
1762	if (ndef && ret) {
1763		struct wpabuf *tmp;
1764		tmp = ndef_build_wifi(ret);
1765		wpabuf_free(ret);
1766		if (tmp == NULL)
1767			return NULL;
1768		ret = tmp;
1769	}
1770
1771	return ret;
1772}
1773
1774
1775struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef)
1776{
1777	struct wpabuf *ret;
1778
1779	if (hapd->wps == NULL)
1780		return NULL;
1781
1782	if (hapd->conf->wps_nfc_dh_pubkey == NULL) {
1783		struct wps_context *wps = hapd->wps;
1784		if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey,
1785				   &hapd->conf->wps_nfc_dh_privkey) < 0)
1786			return NULL;
1787		hostapd_wps_nfc_clear(wps);
1788		wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
1789		wps->ap_nfc_dh_pubkey =
1790			wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1791		wps->ap_nfc_dh_privkey =
1792			wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1793		if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
1794			hostapd_wps_nfc_clear(wps);
1795			return NULL;
1796		}
1797	}
1798
1799	ret = wps_build_nfc_handover_sel(hapd->wps,
1800					 hapd->conf->wps_nfc_dh_pubkey,
1801					 hapd->own_addr, hapd->iface->freq);
1802
1803	if (ndef && ret) {
1804		struct wpabuf *tmp;
1805		tmp = ndef_build_wifi(ret);
1806		wpabuf_free(ret);
1807		if (tmp == NULL)
1808			return NULL;
1809		ret = tmp;
1810	}
1811
1812	return ret;
1813}
1814
1815
1816int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd,
1817				    const struct wpabuf *req,
1818				    const struct wpabuf *sel)
1819{
1820	struct wpabuf *wps;
1821	int ret = -1;
1822	u16 wsc_len;
1823	const u8 *pos;
1824	struct wpabuf msg;
1825	struct wps_parse_attr attr;
1826	u16 dev_pw_id;
1827
1828	/*
1829	 * Enrollee/station is always initiator of the NFC connection handover,
1830	 * so use the request message here to find Enrollee public key hash.
1831	 */
1832	wps = ndef_parse_wifi(req);
1833	if (wps == NULL)
1834		return -1;
1835	wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
1836		   "payload from NFC connection handover");
1837	wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
1838	if (wpabuf_len(wps) < 2) {
1839		wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
1840			   "Message");
1841		goto out;
1842	}
1843	pos = wpabuf_head(wps);
1844	wsc_len = WPA_GET_BE16(pos);
1845	if (wsc_len > wpabuf_len(wps) - 2) {
1846		wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
1847			   "in rt Wi-Fi Handover Request Message", wsc_len);
1848		goto out;
1849	}
1850	pos += 2;
1851
1852	wpa_hexdump(MSG_DEBUG,
1853		    "WPS: WSC attributes in Wi-Fi Handover Request Message",
1854		    pos, wsc_len);
1855	if (wsc_len < wpabuf_len(wps) - 2) {
1856		wpa_hexdump(MSG_DEBUG,
1857			    "WPS: Ignore extra data after WSC attributes",
1858			    pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
1859	}
1860
1861	wpabuf_set(&msg, pos, wsc_len);
1862	ret = wps_parse_msg(&msg, &attr);
1863	if (ret < 0) {
1864		wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
1865			   "Wi-Fi Handover Request Message");
1866		goto out;
1867	}
1868
1869	if (attr.oob_dev_password == NULL ||
1870	    attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
1871		wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
1872			   "included in Wi-Fi Handover Request Message");
1873		ret = -1;
1874		goto out;
1875	}
1876
1877	if (attr.uuid_e == NULL) {
1878		wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
1879			   "Handover Request Message");
1880		ret = -1;
1881		goto out;
1882	}
1883
1884	wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
1885
1886	wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
1887		    attr.oob_dev_password, attr.oob_dev_password_len);
1888	dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
1889				 WPS_OOB_PUBKEY_HASH_LEN);
1890	if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
1891		wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
1892			   "%u in Wi-Fi Handover Request Message", dev_pw_id);
1893		ret = -1;
1894		goto out;
1895	}
1896	wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
1897		    attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
1898
1899	ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar,
1900					     attr.oob_dev_password,
1901					     DEV_PW_NFC_CONNECTION_HANDOVER,
1902					     NULL, 0, 1);
1903
1904out:
1905	wpabuf_free(wps);
1906	return ret;
1907}
1908
1909
1910struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1911{
1912	if (hapd->conf->wps_nfc_pw_from_config) {
1913		return wps_nfc_token_build(ndef,
1914					   hapd->conf->wps_nfc_dev_pw_id,
1915					   hapd->conf->wps_nfc_dh_pubkey,
1916					   hapd->conf->wps_nfc_dev_pw);
1917	}
1918
1919	return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1920				 &hapd->conf->wps_nfc_dh_pubkey,
1921				 &hapd->conf->wps_nfc_dh_privkey,
1922				 &hapd->conf->wps_nfc_dev_pw);
1923}
1924
1925
1926int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1927{
1928	struct wps_context *wps = hapd->wps;
1929	struct wpabuf *pw;
1930
1931	if (wps == NULL)
1932		return -1;
1933
1934	if (!hapd->conf->wps_nfc_dh_pubkey ||
1935	    !hapd->conf->wps_nfc_dh_privkey ||
1936	    !hapd->conf->wps_nfc_dev_pw ||
1937	    !hapd->conf->wps_nfc_dev_pw_id)
1938		return -1;
1939
1940	hostapd_wps_nfc_clear(wps);
1941	wpa_printf(MSG_DEBUG,
1942		   "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)",
1943		   hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps);
1944	wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1945	wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1946	wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1947	pw = hapd->conf->wps_nfc_dev_pw;
1948	wps->ap_nfc_dev_pw = wpabuf_alloc(
1949		wpabuf_len(pw) * 2 + 1);
1950	if (wps->ap_nfc_dev_pw) {
1951		wpa_snprintf_hex_uppercase(
1952			(char *) wpabuf_put(wps->ap_nfc_dev_pw,
1953					    wpabuf_len(pw) * 2),
1954			wpabuf_len(pw) * 2 + 1,
1955			wpabuf_head(pw), wpabuf_len(pw));
1956	}
1957
1958	if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
1959	    !wps->ap_nfc_dev_pw) {
1960		hostapd_wps_nfc_clear(wps);
1961		return -1;
1962	}
1963
1964	return 0;
1965}
1966
1967
1968void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
1969{
1970	wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s",
1971		   hapd->conf->iface);
1972	hostapd_wps_nfc_clear(hapd->wps);
1973}
1974
1975#endif /* CONFIG_WPS_NFC */
1976