1/*
2 * WPA Supplicant - Glue code to setup EAPOL and RSN modules
3 * Copyright (c) 2003-2012, 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 "includes.h"
10
11#include "common.h"
12#include "eapol_supp/eapol_supp_sm.h"
13#include "rsn_supp/wpa.h"
14#include "eloop.h"
15#include "config.h"
16#include "l2_packet/l2_packet.h"
17#include "common/wpa_common.h"
18#include "wpa_supplicant_i.h"
19#include "driver_i.h"
20#include "rsn_supp/pmksa_cache.h"
21#include "sme.h"
22#include "common/ieee802_11_defs.h"
23#include "common/wpa_ctrl.h"
24#include "wpas_glue.h"
25#include "wps_supplicant.h"
26#include "bss.h"
27#include "scan.h"
28#include "notify.h"
29
30
31#ifndef CONFIG_NO_CONFIG_BLOBS
32#if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
33static void wpa_supplicant_set_config_blob(void *ctx,
34					   struct wpa_config_blob *blob)
35{
36	struct wpa_supplicant *wpa_s = ctx;
37	wpa_config_set_blob(wpa_s->conf, blob);
38	if (wpa_s->conf->update_config) {
39		int ret = wpa_config_write(wpa_s->confname, wpa_s->conf);
40		if (ret) {
41			wpa_printf(MSG_DEBUG, "Failed to update config after "
42				   "blob set");
43		}
44	}
45}
46
47
48static const struct wpa_config_blob *
49wpa_supplicant_get_config_blob(void *ctx, const char *name)
50{
51	struct wpa_supplicant *wpa_s = ctx;
52	return wpa_config_get_blob(wpa_s->conf, name);
53}
54#endif /* defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA) */
55#endif /* CONFIG_NO_CONFIG_BLOBS */
56
57
58#if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
59static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
60			    const void *data, u16 data_len,
61			    size_t *msg_len, void **data_pos)
62{
63	struct ieee802_1x_hdr *hdr;
64
65	*msg_len = sizeof(*hdr) + data_len;
66	hdr = os_malloc(*msg_len);
67	if (hdr == NULL)
68		return NULL;
69
70	hdr->version = wpa_s->conf->eapol_version;
71	hdr->type = type;
72	hdr->length = host_to_be16(data_len);
73
74	if (data)
75		os_memcpy(hdr + 1, data, data_len);
76	else
77		os_memset(hdr + 1, 0, data_len);
78
79	if (data_pos)
80		*data_pos = hdr + 1;
81
82	return (u8 *) hdr;
83}
84
85
86/**
87 * wpa_ether_send - Send Ethernet frame
88 * @wpa_s: Pointer to wpa_supplicant data
89 * @dest: Destination MAC address
90 * @proto: Ethertype in host byte order
91 * @buf: Frame payload starting from IEEE 802.1X header
92 * @len: Frame payload length
93 * Returns: >=0 on success, <0 on failure
94 */
95static int wpa_ether_send(struct wpa_supplicant *wpa_s, const u8 *dest,
96			  u16 proto, const u8 *buf, size_t len)
97{
98	if (wpa_s->l2) {
99		return l2_packet_send(wpa_s->l2, dest, proto, buf, len);
100	}
101
102	return wpa_drv_send_eapol(wpa_s, dest, proto, buf, len);
103}
104#endif /* IEEE8021X_EAPOL || !CONFIG_NO_WPA */
105
106
107#ifdef IEEE8021X_EAPOL
108
109/**
110 * wpa_supplicant_eapol_send - Send IEEE 802.1X EAPOL packet to Authenticator
111 * @ctx: Pointer to wpa_supplicant data (wpa_s)
112 * @type: IEEE 802.1X packet type (IEEE802_1X_TYPE_*)
113 * @buf: EAPOL payload (after IEEE 802.1X header)
114 * @len: EAPOL payload length
115 * Returns: >=0 on success, <0 on failure
116 *
117 * This function adds Ethernet and IEEE 802.1X header and sends the EAPOL frame
118 * to the current Authenticator.
119 */
120static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf,
121				     size_t len)
122{
123	struct wpa_supplicant *wpa_s = ctx;
124	u8 *msg, *dst, bssid[ETH_ALEN];
125	size_t msglen;
126	int res;
127
128	/* TODO: could add l2_packet_sendmsg that allows fragments to avoid
129	 * extra copy here */
130
131	if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
132	    wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
133		/* Current SSID is not using IEEE 802.1X/EAP, so drop possible
134		 * EAPOL frames (mainly, EAPOL-Start) from EAPOL state
135		 * machines. */
136		wpa_printf(MSG_DEBUG, "WPA: drop TX EAPOL in non-IEEE 802.1X "
137			   "mode (type=%d len=%lu)", type,
138			   (unsigned long) len);
139		return -1;
140	}
141
142	if (pmksa_cache_get_current(wpa_s->wpa) &&
143	    type == IEEE802_1X_TYPE_EAPOL_START) {
144		/* Trying to use PMKSA caching - do not send EAPOL-Start frames
145		 * since they will trigger full EAPOL authentication. */
146		wpa_printf(MSG_DEBUG, "RSN: PMKSA caching - do not send "
147			   "EAPOL-Start");
148		return -1;
149	}
150
151	if (is_zero_ether_addr(wpa_s->bssid)) {
152		wpa_printf(MSG_DEBUG, "BSSID not set when trying to send an "
153			   "EAPOL frame");
154		if (wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
155		    !is_zero_ether_addr(bssid)) {
156			dst = bssid;
157			wpa_printf(MSG_DEBUG, "Using current BSSID " MACSTR
158				   " from the driver as the EAPOL destination",
159				   MAC2STR(dst));
160		} else {
161			dst = wpa_s->last_eapol_src;
162			wpa_printf(MSG_DEBUG, "Using the source address of the"
163				   " last received EAPOL frame " MACSTR " as "
164				   "the EAPOL destination",
165				   MAC2STR(dst));
166		}
167	} else {
168		/* BSSID was already set (from (Re)Assoc event, so use it as
169		 * the EAPOL destination. */
170		dst = wpa_s->bssid;
171	}
172
173	msg = wpa_alloc_eapol(wpa_s, type, buf, len, &msglen, NULL);
174	if (msg == NULL)
175		return -1;
176
177	wpa_printf(MSG_DEBUG, "TX EAPOL: dst=" MACSTR, MAC2STR(dst));
178	wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", msg, msglen);
179	res = wpa_ether_send(wpa_s, dst, ETH_P_EAPOL, msg, msglen);
180	os_free(msg);
181	return res;
182}
183
184
185/**
186 * wpa_eapol_set_wep_key - set WEP key for the driver
187 * @ctx: Pointer to wpa_supplicant data (wpa_s)
188 * @unicast: 1 = individual unicast key, 0 = broadcast key
189 * @keyidx: WEP key index (0..3)
190 * @key: Pointer to key data
191 * @keylen: Key length in bytes
192 * Returns: 0 on success or < 0 on error.
193 */
194static int wpa_eapol_set_wep_key(void *ctx, int unicast, int keyidx,
195				 const u8 *key, size_t keylen)
196{
197	struct wpa_supplicant *wpa_s = ctx;
198	if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
199		int cipher = (keylen == 5) ? WPA_CIPHER_WEP40 :
200			WPA_CIPHER_WEP104;
201		if (unicast)
202			wpa_s->pairwise_cipher = cipher;
203		else
204			wpa_s->group_cipher = cipher;
205	}
206	return wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
207			       unicast ? wpa_s->bssid : NULL,
208			       keyidx, unicast, NULL, 0, key, keylen);
209}
210
211
212static void wpa_supplicant_aborted_cached(void *ctx)
213{
214	struct wpa_supplicant *wpa_s = ctx;
215	wpa_sm_aborted_cached(wpa_s->wpa);
216}
217
218
219static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol, int success,
220				    void *ctx)
221{
222	struct wpa_supplicant *wpa_s = ctx;
223	int res, pmk_len;
224	u8 pmk[PMK_LEN];
225
226	wpa_printf(MSG_DEBUG, "EAPOL authentication completed %ssuccessfully",
227		   success ? "" : "un");
228
229	if (wpas_wps_eapol_cb(wpa_s) > 0)
230		return;
231
232	if (!success) {
233		/*
234		 * Make sure we do not get stuck here waiting for long EAPOL
235		 * timeout if the AP does not disconnect in case of
236		 * authentication failure.
237		 */
238		wpa_supplicant_req_auth_timeout(wpa_s, 2, 0);
239	}
240
241	if (!success || !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
242		return;
243
244	if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt))
245		return;
246
247	wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way "
248		   "handshake");
249
250	pmk_len = PMK_LEN;
251	if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
252#ifdef CONFIG_IEEE80211R
253		u8 buf[2 * PMK_LEN];
254		wpa_printf(MSG_DEBUG, "RSN: Use FT XXKey as PMK for "
255			   "driver-based 4-way hs and FT");
256		res = eapol_sm_get_key(eapol, buf, 2 * PMK_LEN);
257		if (res == 0) {
258			os_memcpy(pmk, buf + PMK_LEN, PMK_LEN);
259			os_memset(buf, 0, sizeof(buf));
260		}
261#else /* CONFIG_IEEE80211R */
262		res = -1;
263#endif /* CONFIG_IEEE80211R */
264	} else {
265		res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
266		if (res) {
267			/*
268			 * EAP-LEAP is an exception from other EAP methods: it
269			 * uses only 16-byte PMK.
270			 */
271			res = eapol_sm_get_key(eapol, pmk, 16);
272			pmk_len = 16;
273		}
274	}
275
276	if (res) {
277		wpa_printf(MSG_DEBUG, "Failed to get PMK from EAPOL state "
278			   "machines");
279		return;
280	}
281
282	wpa_hexdump_key(MSG_DEBUG, "RSN: Configure PMK for driver-based 4-way "
283			"handshake", pmk, pmk_len);
284
285	if (wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, NULL, 0, pmk,
286			    pmk_len)) {
287		wpa_printf(MSG_DEBUG, "Failed to set PMK to the driver");
288	}
289
290	wpa_supplicant_cancel_scan(wpa_s);
291	wpa_supplicant_cancel_auth_timeout(wpa_s);
292	wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
293
294}
295
296
297static void wpa_supplicant_notify_eapol_done(void *ctx)
298{
299	struct wpa_supplicant *wpa_s = ctx;
300	wpa_msg(wpa_s, MSG_DEBUG, "WPA: EAPOL processing complete");
301	if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
302		wpa_supplicant_set_state(wpa_s, WPA_4WAY_HANDSHAKE);
303	} else {
304		wpa_supplicant_cancel_auth_timeout(wpa_s);
305		wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
306	}
307}
308
309#endif /* IEEE8021X_EAPOL */
310
311
312#ifndef CONFIG_NO_WPA
313
314static int wpa_get_beacon_ie(struct wpa_supplicant *wpa_s)
315{
316	int ret = 0;
317	struct wpa_bss *curr = NULL, *bss;
318	struct wpa_ssid *ssid = wpa_s->current_ssid;
319	const u8 *ie;
320
321	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
322		if (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) != 0)
323			continue;
324		if (ssid == NULL ||
325		    ((bss->ssid_len == ssid->ssid_len &&
326		      os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) == 0) ||
327		     ssid->ssid_len == 0)) {
328			curr = bss;
329			break;
330		}
331	}
332
333	if (curr) {
334		ie = wpa_bss_get_vendor_ie(curr, WPA_IE_VENDOR_TYPE);
335		if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
336			ret = -1;
337
338		ie = wpa_bss_get_ie(curr, WLAN_EID_RSN);
339		if (wpa_sm_set_ap_rsn_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
340			ret = -1;
341	} else {
342		ret = -1;
343	}
344
345	return ret;
346}
347
348
349static int wpa_supplicant_get_beacon_ie(void *ctx)
350{
351	struct wpa_supplicant *wpa_s = ctx;
352	if (wpa_get_beacon_ie(wpa_s) == 0) {
353		return 0;
354	}
355
356	/* No WPA/RSN IE found in the cached scan results. Try to get updated
357	 * scan results from the driver. */
358	if (wpa_supplicant_update_scan_results(wpa_s) < 0)
359		return -1;
360
361	return wpa_get_beacon_ie(wpa_s);
362}
363
364
365static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
366			     const void *data, u16 data_len,
367			     size_t *msg_len, void **data_pos)
368{
369	return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
370}
371
372
373static int _wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
374			   const u8 *buf, size_t len)
375{
376	return wpa_ether_send(wpa_s, dest, proto, buf, len);
377}
378
379
380static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
381{
382	wpa_supplicant_cancel_auth_timeout(wpa_s);
383}
384
385
386static void _wpa_supplicant_set_state(void *wpa_s, enum wpa_states state)
387{
388	wpa_supplicant_set_state(wpa_s, state);
389}
390
391
392/**
393 * wpa_supplicant_get_state - Get the connection state
394 * @wpa_s: Pointer to wpa_supplicant data
395 * Returns: The current connection state (WPA_*)
396 */
397static enum wpa_states wpa_supplicant_get_state(struct wpa_supplicant *wpa_s)
398{
399	return wpa_s->wpa_state;
400}
401
402
403static enum wpa_states _wpa_supplicant_get_state(void *wpa_s)
404{
405	return wpa_supplicant_get_state(wpa_s);
406}
407
408
409static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code)
410{
411	wpa_supplicant_deauthenticate(wpa_s, reason_code);
412	/* Schedule a scan to make sure we continue looking for networks */
413	wpa_supplicant_req_scan(wpa_s, 5, 0);
414}
415
416
417static void * wpa_supplicant_get_network_ctx(void *wpa_s)
418{
419	return wpa_supplicant_get_ssid(wpa_s);
420}
421
422
423static int wpa_supplicant_get_bssid(void *ctx, u8 *bssid)
424{
425	struct wpa_supplicant *wpa_s = ctx;
426	return wpa_drv_get_bssid(wpa_s, bssid);
427}
428
429
430static int wpa_supplicant_set_key(void *_wpa_s, enum wpa_alg alg,
431				  const u8 *addr, int key_idx, int set_tx,
432				  const u8 *seq, size_t seq_len,
433				  const u8 *key, size_t key_len)
434{
435	struct wpa_supplicant *wpa_s = _wpa_s;
436	if (alg == WPA_ALG_TKIP && key_idx == 0 && key_len == 32) {
437		/* Clear the MIC error counter when setting a new PTK. */
438		wpa_s->mic_errors_seen = 0;
439	}
440#ifdef CONFIG_TESTING_GET_GTK
441	if (key_idx > 0 && addr && is_broadcast_ether_addr(addr) &&
442	    alg != WPA_ALG_NONE && key_len <= sizeof(wpa_s->last_gtk)) {
443		os_memcpy(wpa_s->last_gtk, key, key_len);
444		wpa_s->last_gtk_len = key_len;
445	}
446#endif /* CONFIG_TESTING_GET_GTK */
447	return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
448			       key, key_len);
449}
450
451
452static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
453					     int protection_type,
454					     int key_type)
455{
456	return wpa_drv_mlme_setprotection(wpa_s, addr, protection_type,
457					  key_type);
458}
459
460
461static int wpa_supplicant_add_pmkid(void *wpa_s,
462				    const u8 *bssid, const u8 *pmkid)
463{
464	return wpa_drv_add_pmkid(wpa_s, bssid, pmkid);
465}
466
467
468static int wpa_supplicant_remove_pmkid(void *wpa_s,
469				       const u8 *bssid, const u8 *pmkid)
470{
471	return wpa_drv_remove_pmkid(wpa_s, bssid, pmkid);
472}
473
474
475#ifdef CONFIG_IEEE80211R
476static int wpa_supplicant_update_ft_ies(void *ctx, const u8 *md,
477					const u8 *ies, size_t ies_len)
478{
479	struct wpa_supplicant *wpa_s = ctx;
480	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
481		return sme_update_ft_ies(wpa_s, md, ies, ies_len);
482	return wpa_drv_update_ft_ies(wpa_s, md, ies, ies_len);
483}
484
485
486static int wpa_supplicant_send_ft_action(void *ctx, u8 action,
487					 const u8 *target_ap,
488					 const u8 *ies, size_t ies_len)
489{
490	struct wpa_supplicant *wpa_s = ctx;
491	return wpa_drv_send_ft_action(wpa_s, action, target_ap, ies, ies_len);
492}
493
494
495static int wpa_supplicant_mark_authenticated(void *ctx, const u8 *target_ap)
496{
497	struct wpa_supplicant *wpa_s = ctx;
498	struct wpa_driver_auth_params params;
499	struct wpa_bss *bss;
500
501	bss = wpa_bss_get_bssid(wpa_s, target_ap);
502	if (bss == NULL)
503		return -1;
504
505	os_memset(&params, 0, sizeof(params));
506	params.bssid = target_ap;
507	params.freq = bss->freq;
508	params.ssid = bss->ssid;
509	params.ssid_len = bss->ssid_len;
510	params.auth_alg = WPA_AUTH_ALG_FT;
511	params.local_state_change = 1;
512	return wpa_drv_authenticate(wpa_s, &params);
513}
514#endif /* CONFIG_IEEE80211R */
515
516
517#ifdef CONFIG_TDLS
518
519static int wpa_supplicant_tdls_get_capa(void *ctx, int *tdls_supported,
520					int *tdls_ext_setup)
521{
522	struct wpa_supplicant *wpa_s = ctx;
523
524	*tdls_supported = 0;
525	*tdls_ext_setup = 0;
526
527	if (!wpa_s->drv_capa_known)
528		return -1;
529
530	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)
531		*tdls_supported = 1;
532
533	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP)
534		*tdls_ext_setup = 1;
535
536	return 0;
537}
538
539
540static int wpa_supplicant_send_tdls_mgmt(void *ctx, const u8 *dst,
541					 u8 action_code, u8 dialog_token,
542					 u16 status_code, const u8 *buf,
543					 size_t len)
544{
545	struct wpa_supplicant *wpa_s = ctx;
546	return wpa_drv_send_tdls_mgmt(wpa_s, dst, action_code, dialog_token,
547				      status_code, buf, len);
548}
549
550
551static int wpa_supplicant_tdls_oper(void *ctx, int oper, const u8 *peer)
552{
553	struct wpa_supplicant *wpa_s = ctx;
554	return wpa_drv_tdls_oper(wpa_s, oper, peer);
555}
556
557
558static int wpa_supplicant_tdls_peer_addset(
559	void *ctx, const u8 *peer, int add, u16 aid, u16 capability,
560	const u8 *supp_rates, size_t supp_rates_len,
561	const struct ieee80211_ht_capabilities *ht_capab,
562	const struct ieee80211_vht_capabilities *vht_capab,
563	u8 qosinfo, const u8 *ext_capab, size_t ext_capab_len)
564{
565	struct wpa_supplicant *wpa_s = ctx;
566	struct hostapd_sta_add_params params;
567
568	os_memset(&params, 0, sizeof(params));
569
570	params.addr = peer;
571	params.aid = aid;
572	params.capability = capability;
573	params.flags = WPA_STA_TDLS_PEER | WPA_STA_AUTHORIZED;
574
575	/*
576	 * TDLS Setup frames do not contain WMM IEs, hence need to depend on
577	 * qosinfo to check if the peer is WMM capable.
578	 */
579	if (qosinfo)
580		params.flags |= WPA_STA_WMM;
581
582	params.ht_capabilities = ht_capab;
583	params.vht_capabilities = vht_capab;
584	params.qosinfo = qosinfo;
585	params.listen_interval = 0;
586	params.supp_rates = supp_rates;
587	params.supp_rates_len = supp_rates_len;
588	params.set = !add;
589	params.ext_capab = ext_capab;
590	params.ext_capab_len = ext_capab_len;
591
592	return wpa_drv_sta_add(wpa_s, &params);
593}
594
595#endif /* CONFIG_TDLS */
596
597#endif /* CONFIG_NO_WPA */
598
599
600enum wpa_ctrl_req_type wpa_supplicant_ctrl_req_from_string(const char *field)
601{
602	if (os_strcmp(field, "IDENTITY") == 0)
603		return WPA_CTRL_REQ_EAP_IDENTITY;
604	else if (os_strcmp(field, "PASSWORD") == 0)
605		return WPA_CTRL_REQ_EAP_PASSWORD;
606	else if (os_strcmp(field, "NEW_PASSWORD") == 0)
607		return WPA_CTRL_REQ_EAP_NEW_PASSWORD;
608	else if (os_strcmp(field, "PIN") == 0)
609		return WPA_CTRL_REQ_EAP_PIN;
610	else if (os_strcmp(field, "OTP") == 0)
611		return WPA_CTRL_REQ_EAP_OTP;
612	else if (os_strcmp(field, "PASSPHRASE") == 0)
613		return WPA_CTRL_REQ_EAP_PASSPHRASE;
614	return WPA_CTRL_REQ_UNKNOWN;
615}
616
617
618const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field,
619					       const char *default_txt,
620					       const char **txt)
621{
622	const char *ret = NULL;
623
624	*txt = default_txt;
625
626	switch (field) {
627	case WPA_CTRL_REQ_EAP_IDENTITY:
628		*txt = "Identity";
629		ret = "IDENTITY";
630		break;
631	case WPA_CTRL_REQ_EAP_PASSWORD:
632		*txt = "Password";
633		ret = "PASSWORD";
634		break;
635	case WPA_CTRL_REQ_EAP_NEW_PASSWORD:
636		*txt = "New Password";
637		ret = "NEW_PASSWORD";
638		break;
639	case WPA_CTRL_REQ_EAP_PIN:
640		*txt = "PIN";
641		ret = "PIN";
642		break;
643	case WPA_CTRL_REQ_EAP_OTP:
644		ret = "OTP";
645		break;
646	case WPA_CTRL_REQ_EAP_PASSPHRASE:
647		*txt = "Private key passphrase";
648		ret = "PASSPHRASE";
649		break;
650	default:
651		break;
652	}
653
654	/* txt needs to be something */
655	if (*txt == NULL) {
656		wpa_printf(MSG_WARNING, "No message for request %d", field);
657		ret = NULL;
658	}
659
660	return ret;
661}
662
663#ifdef IEEE8021X_EAPOL
664#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
665static void wpa_supplicant_eap_param_needed(void *ctx,
666					    enum wpa_ctrl_req_type field,
667					    const char *default_txt)
668{
669	struct wpa_supplicant *wpa_s = ctx;
670	struct wpa_ssid *ssid = wpa_s->current_ssid;
671	const char *field_name, *txt = NULL;
672	char *buf;
673	size_t buflen;
674	int len;
675
676	if (ssid == NULL)
677		return;
678
679	wpas_notify_network_request(wpa_s, ssid, field, default_txt);
680
681	field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt,
682						       &txt);
683	if (field_name == NULL) {
684		wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed",
685			   field);
686		return;
687	}
688
689	wpas_notify_eap_status(wpa_s, "eap parameter needed", field_name);
690
691	buflen = 100 + os_strlen(txt) + ssid->ssid_len;
692	buf = os_malloc(buflen);
693	if (buf == NULL)
694		return;
695	len = os_snprintf(buf, buflen,
696			  WPA_CTRL_REQ "%s-%d:%s needed for SSID ",
697			  field_name, ssid->id, txt);
698	if (len < 0 || (size_t) len >= buflen) {
699		os_free(buf);
700		return;
701	}
702	if (ssid->ssid && buflen > len + ssid->ssid_len) {
703		os_memcpy(buf + len, ssid->ssid, ssid->ssid_len);
704		len += ssid->ssid_len;
705		buf[len] = '\0';
706	}
707	buf[buflen - 1] = '\0';
708	wpa_msg(wpa_s, MSG_INFO, "%s", buf);
709	os_free(buf);
710}
711#else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
712#define wpa_supplicant_eap_param_needed NULL
713#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
714
715
716static void wpa_supplicant_port_cb(void *ctx, int authorized)
717{
718	struct wpa_supplicant *wpa_s = ctx;
719#ifdef CONFIG_AP
720	if (wpa_s->ap_iface) {
721		wpa_printf(MSG_DEBUG, "AP mode active - skip EAPOL Supplicant "
722			   "port status: %s",
723			   authorized ? "Authorized" : "Unauthorized");
724		return;
725	}
726#endif /* CONFIG_AP */
727	wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s",
728		   authorized ? "Authorized" : "Unauthorized");
729	wpa_drv_set_supp_port(wpa_s, authorized);
730}
731
732
733static void wpa_supplicant_cert_cb(void *ctx, int depth, const char *subject,
734				   const char *cert_hash,
735				   const struct wpabuf *cert)
736{
737	struct wpa_supplicant *wpa_s = ctx;
738
739	wpas_notify_certification(wpa_s, depth, subject, cert_hash, cert);
740}
741
742
743static void wpa_supplicant_status_cb(void *ctx, const char *status,
744				     const char *parameter)
745{
746	struct wpa_supplicant *wpa_s = ctx;
747
748	wpas_notify_eap_status(wpa_s, status, parameter);
749}
750
751
752static void wpa_supplicant_set_anon_id(void *ctx, const u8 *id, size_t len)
753{
754	struct wpa_supplicant *wpa_s = ctx;
755	char *str;
756	int res;
757
758	wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity",
759			  id, len);
760
761	if (wpa_s->current_ssid == NULL)
762		return;
763
764	if (id == NULL) {
765		if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
766				   "NULL", 0) < 0)
767			return;
768	} else {
769		str = os_malloc(len * 2 + 1);
770		if (str == NULL)
771			return;
772		wpa_snprintf_hex(str, len * 2 + 1, id, len);
773		res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
774				     str, 0);
775		os_free(str);
776		if (res < 0)
777			return;
778	}
779
780	if (wpa_s->conf->update_config) {
781		res = wpa_config_write(wpa_s->confname, wpa_s->conf);
782		if (res) {
783			wpa_printf(MSG_DEBUG, "Failed to update config after "
784				   "anonymous_id update");
785		}
786	}
787}
788#endif /* IEEE8021X_EAPOL */
789
790
791int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s)
792{
793#ifdef IEEE8021X_EAPOL
794	struct eapol_ctx *ctx;
795	ctx = os_zalloc(sizeof(*ctx));
796	if (ctx == NULL) {
797		wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context.");
798		return -1;
799	}
800
801	ctx->ctx = wpa_s;
802	ctx->msg_ctx = wpa_s;
803	ctx->eapol_send_ctx = wpa_s;
804	ctx->preauth = 0;
805	ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done;
806	ctx->eapol_send = wpa_supplicant_eapol_send;
807	ctx->set_wep_key = wpa_eapol_set_wep_key;
808#ifndef CONFIG_NO_CONFIG_BLOBS
809	ctx->set_config_blob = wpa_supplicant_set_config_blob;
810	ctx->get_config_blob = wpa_supplicant_get_config_blob;
811#endif /* CONFIG_NO_CONFIG_BLOBS */
812	ctx->aborted_cached = wpa_supplicant_aborted_cached;
813	ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
814	ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
815	ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
816	ctx->wps = wpa_s->wps;
817	ctx->eap_param_needed = wpa_supplicant_eap_param_needed;
818	ctx->port_cb = wpa_supplicant_port_cb;
819	ctx->cb = wpa_supplicant_eapol_cb;
820	ctx->cert_cb = wpa_supplicant_cert_cb;
821	ctx->status_cb = wpa_supplicant_status_cb;
822	ctx->set_anon_id = wpa_supplicant_set_anon_id;
823	ctx->cb_ctx = wpa_s;
824	wpa_s->eapol = eapol_sm_init(ctx);
825	if (wpa_s->eapol == NULL) {
826		os_free(ctx);
827		wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state "
828			   "machines.");
829		return -1;
830	}
831#endif /* IEEE8021X_EAPOL */
832
833	return 0;
834}
835
836
837#ifndef CONFIG_NO_WPA
838static void wpa_supplicant_set_rekey_offload(void *ctx, const u8 *kek,
839					     const u8 *kck,
840					     const u8 *replay_ctr)
841{
842	struct wpa_supplicant *wpa_s = ctx;
843
844	wpa_drv_set_rekey_info(wpa_s, kek, kck, replay_ctr);
845}
846#endif /* CONFIG_NO_WPA */
847
848
849int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s)
850{
851#ifndef CONFIG_NO_WPA
852	struct wpa_sm_ctx *ctx;
853	ctx = os_zalloc(sizeof(*ctx));
854	if (ctx == NULL) {
855		wpa_printf(MSG_ERROR, "Failed to allocate WPA context.");
856		return -1;
857	}
858
859	ctx->ctx = wpa_s;
860	ctx->msg_ctx = wpa_s;
861	ctx->set_state = _wpa_supplicant_set_state;
862	ctx->get_state = _wpa_supplicant_get_state;
863	ctx->deauthenticate = _wpa_supplicant_deauthenticate;
864	ctx->set_key = wpa_supplicant_set_key;
865	ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
866	ctx->get_bssid = wpa_supplicant_get_bssid;
867	ctx->ether_send = _wpa_ether_send;
868	ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
869	ctx->alloc_eapol = _wpa_alloc_eapol;
870	ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
871	ctx->add_pmkid = wpa_supplicant_add_pmkid;
872	ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
873#ifndef CONFIG_NO_CONFIG_BLOBS
874	ctx->set_config_blob = wpa_supplicant_set_config_blob;
875	ctx->get_config_blob = wpa_supplicant_get_config_blob;
876#endif /* CONFIG_NO_CONFIG_BLOBS */
877	ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
878#ifdef CONFIG_IEEE80211R
879	ctx->update_ft_ies = wpa_supplicant_update_ft_ies;
880	ctx->send_ft_action = wpa_supplicant_send_ft_action;
881	ctx->mark_authenticated = wpa_supplicant_mark_authenticated;
882#endif /* CONFIG_IEEE80211R */
883#ifdef CONFIG_TDLS
884	ctx->tdls_get_capa = wpa_supplicant_tdls_get_capa;
885	ctx->send_tdls_mgmt = wpa_supplicant_send_tdls_mgmt;
886	ctx->tdls_oper = wpa_supplicant_tdls_oper;
887	ctx->tdls_peer_addset = wpa_supplicant_tdls_peer_addset;
888#endif /* CONFIG_TDLS */
889	ctx->set_rekey_offload = wpa_supplicant_set_rekey_offload;
890
891	wpa_s->wpa = wpa_sm_init(ctx);
892	if (wpa_s->wpa == NULL) {
893		wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
894			   "machine");
895		return -1;
896	}
897#endif /* CONFIG_NO_WPA */
898
899	return 0;
900}
901
902
903void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s,
904					struct wpa_ssid *ssid)
905{
906	struct rsn_supp_config conf;
907	if (ssid) {
908		os_memset(&conf, 0, sizeof(conf));
909		conf.network_ctx = ssid;
910		conf.peerkey_enabled = ssid->peerkey;
911		conf.allowed_pairwise_cipher = ssid->pairwise_cipher;
912#ifdef IEEE8021X_EAPOL
913		conf.proactive_key_caching = ssid->proactive_key_caching < 0 ?
914			wpa_s->conf->okc : ssid->proactive_key_caching;
915		conf.eap_workaround = ssid->eap_workaround;
916		conf.eap_conf_ctx = &ssid->eap;
917#endif /* IEEE8021X_EAPOL */
918		conf.ssid = ssid->ssid;
919		conf.ssid_len = ssid->ssid_len;
920		conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey;
921	}
922	wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL);
923}
924