1/*
2 * WPA Supplicant - driver interaction with BSD net80211 layer
3 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
4 * Copyright (c) 2004, 2Wire, Inc
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Alternatively, this software may be distributed under the terms of BSD
11 * license.
12 *
13 * See README and COPYING for more details.
14 */
15
16#include "includes.h"
17#include <sys/ioctl.h>
18
19#include "common.h"
20#include "driver.h"
21#include "eloop.h"
22#include "common/ieee802_11_defs.h"
23
24#include <net/if.h>
25#include <net/if_media.h>
26
27#ifdef __NetBSD__
28#include <net/if_ether.h>
29#else
30#include <net/ethernet.h>
31#endif
32#include <net/route.h>
33
34#ifdef __DragonFly__
35#include <netproto/802_11/ieee80211_ioctl.h>
36#include <netproto/802_11/ieee80211_dragonfly.h>
37#else /* __DragonFly__ */
38#ifdef __GLIBC__
39#include <netinet/ether.h>
40#endif /* __GLIBC__ */
41#include <net80211/ieee80211.h>
42#include <net80211/ieee80211_ioctl.h>
43#include <net80211/ieee80211_crypto.h>
44#endif /* __DragonFly__ || __GLIBC__ */
45#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
46#include <net80211/ieee80211_freebsd.h>
47#endif
48#if __NetBSD__
49#include <net80211/ieee80211_netbsd.h>
50#endif
51
52#include "l2_packet/l2_packet.h"
53
54struct bsd_driver_data {
55	struct hostapd_data *hapd;	/* back pointer */
56
57	int	sock;			/* open socket for 802.11 ioctls */
58	struct l2_packet_data *sock_xmit;/* raw packet xmit socket */
59	int	route;			/* routing socket for events */
60	char	ifname[IFNAMSIZ+1];	/* interface name */
61	int	flags;
62	unsigned int ifindex;		/* interface index */
63	void	*ctx;
64	struct wpa_driver_capa capa;	/* driver capability */
65	int	is_ap;			/* Access point mode */
66	int	prev_roaming;	/* roaming state to restore on deinit */
67	int	prev_privacy;	/* privacy state to restore on deinit */
68	int	prev_wpa;	/* wpa state to restore on deinit */
69};
70
71/* Generic functions for hostapd and wpa_supplicant */
72
73static int
74bsd_set80211(void *priv, int op, int val, const void *arg, int arg_len)
75{
76	struct bsd_driver_data *drv = priv;
77	struct ieee80211req ireq;
78
79	os_memset(&ireq, 0, sizeof(ireq));
80	os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
81	ireq.i_type = op;
82	ireq.i_val = val;
83	ireq.i_data = (void *) arg;
84	ireq.i_len = arg_len;
85
86	if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
87		wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, val=%u, "
88			   "arg_len=%u]: %s", op, val, arg_len,
89			   strerror(errno));
90		return -1;
91	}
92	return 0;
93}
94
95static int
96bsd_get80211(void *priv, struct ieee80211req *ireq, int op, void *arg,
97	     int arg_len)
98{
99	struct bsd_driver_data *drv = priv;
100
101	os_memset(ireq, 0, sizeof(*ireq));
102	os_strlcpy(ireq->i_name, drv->ifname, sizeof(ireq->i_name));
103	ireq->i_type = op;
104	ireq->i_len = arg_len;
105	ireq->i_data = arg;
106
107	if (ioctl(drv->sock, SIOCG80211, ireq) < 0) {
108		wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, "
109			   "arg_len=%u]: %s", op, arg_len, strerror(errno));
110		return -1;
111	}
112	return 0;
113}
114
115static int
116get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
117{
118	struct ieee80211req ireq;
119
120	if (bsd_get80211(drv, &ireq, op, arg, arg_len) < 0)
121		return -1;
122	return ireq.i_len;
123}
124
125static int
126set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
127{
128	return bsd_set80211(drv, op, 0, arg, arg_len);
129}
130
131static int
132set80211param(struct bsd_driver_data *drv, int op, int arg)
133{
134	return bsd_set80211(drv, op, arg, NULL, 0);
135}
136
137static int
138bsd_get_ssid(void *priv, u8 *ssid, int len)
139{
140	struct bsd_driver_data *drv = priv;
141#ifdef SIOCG80211NWID
142	struct ieee80211_nwid nwid;
143	struct ifreq ifr;
144
145	os_memset(&ifr, 0, sizeof(ifr));
146	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
147	ifr.ifr_data = (void *)&nwid;
148	if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 ||
149	    nwid.i_len > IEEE80211_NWID_LEN)
150		return -1;
151	os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
152	return nwid.i_len;
153#else
154	return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN);
155#endif
156}
157
158static int
159bsd_set_ssid(void *priv, const u8 *ssid, int ssid_len)
160{
161	struct bsd_driver_data *drv = priv;
162#ifdef SIOCS80211NWID
163	struct ieee80211_nwid nwid;
164	struct ifreq ifr;
165
166	os_memcpy(nwid.i_nwid, ssid, ssid_len);
167	nwid.i_len = ssid_len;
168	os_memset(&ifr, 0, sizeof(ifr));
169	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
170	ifr.ifr_data = (void *)&nwid;
171	return ioctl(drv->sock, SIOCS80211NWID, &ifr);
172#else
173	return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
174#endif
175}
176
177static int
178bsd_get_if_media(void *priv)
179{
180	struct bsd_driver_data *drv = priv;
181	struct ifmediareq ifmr;
182
183	os_memset(&ifmr, 0, sizeof(ifmr));
184	os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
185
186	if (ioctl(drv->sock, SIOCGIFMEDIA, &ifmr) < 0) {
187		wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__,
188			   strerror(errno));
189		return -1;
190	}
191
192	return ifmr.ifm_current;
193}
194
195static int
196bsd_set_if_media(void *priv, int media)
197{
198	struct bsd_driver_data *drv = priv;
199	struct ifreq ifr;
200
201	os_memset(&ifr, 0, sizeof(ifr));
202	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
203	ifr.ifr_media = media;
204
205	if (ioctl(drv->sock, SIOCSIFMEDIA, &ifr) < 0) {
206		wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__,
207			   strerror(errno));
208		return -1;
209	}
210
211	return 0;
212}
213
214static int
215bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode)
216{
217	int media = bsd_get_if_media(priv);
218
219	if (media < 0)
220		return -1;
221	media &= ~mask;
222	media |= mode;
223	if (bsd_set_if_media(priv, media) < 0)
224		return -1;
225	return 0;
226}
227
228static int
229bsd_del_key(void *priv, const u8 *addr, int key_idx)
230{
231	struct ieee80211req_del_key wk;
232
233	os_memset(&wk, 0, sizeof(wk));
234	if (addr == NULL) {
235		wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx);
236		wk.idk_keyix = key_idx;
237	} else {
238		wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__,
239			   MAC2STR(addr));
240		os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
241		wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE;	/* XXX */
242	}
243
244	return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
245}
246
247static int
248bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr)
249{
250	struct ieee80211req_mlme mlme;
251
252	os_memset(&mlme, 0, sizeof(mlme));
253	mlme.im_op = op;
254	mlme.im_reason = reason;
255	os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
256	return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
257}
258
259static int
260bsd_ctrl_iface(void *priv, int enable)
261{
262	struct bsd_driver_data *drv = priv;
263	struct ifreq ifr;
264
265	os_memset(&ifr, 0, sizeof(ifr));
266	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
267
268	if (ioctl(drv->sock, SIOCGIFFLAGS, &ifr) < 0) {
269		perror("ioctl[SIOCGIFFLAGS]");
270		return -1;
271	}
272
273	if (enable)
274		ifr.ifr_flags |= IFF_UP;
275	else
276		ifr.ifr_flags &= ~IFF_UP;
277
278	if (ioctl(drv->sock, SIOCSIFFLAGS, &ifr) < 0) {
279		perror("ioctl[SIOCSIFFLAGS]");
280		return -1;
281	}
282
283	return 0;
284}
285
286static int
287bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
288	    const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
289	    size_t seq_len, const u8 *key, size_t key_len)
290{
291	struct ieee80211req_key wk;
292
293	wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
294		   "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
295		   set_tx, seq_len, key_len);
296
297	if (alg == WPA_ALG_NONE) {
298#ifndef HOSTAPD
299		if (addr == NULL ||
300		    os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
301			      IEEE80211_ADDR_LEN) == 0)
302			return bsd_del_key(priv, NULL, key_idx);
303		else
304#endif /* HOSTAPD */
305			return bsd_del_key(priv, addr, key_idx);
306	}
307
308	os_memset(&wk, 0, sizeof(wk));
309	switch (alg) {
310	case WPA_ALG_WEP:
311		wk.ik_type = IEEE80211_CIPHER_WEP;
312		break;
313	case WPA_ALG_TKIP:
314		wk.ik_type = IEEE80211_CIPHER_TKIP;
315		break;
316	case WPA_ALG_CCMP:
317		wk.ik_type = IEEE80211_CIPHER_AES_CCM;
318		break;
319	default:
320		wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg);
321		return -1;
322	}
323
324	wk.ik_flags = IEEE80211_KEY_RECV;
325	if (set_tx)
326		wk.ik_flags |= IEEE80211_KEY_XMIT;
327
328	if (addr == NULL) {
329		os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
330		wk.ik_keyix = key_idx;
331	} else {
332		os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
333		/*
334		 * Deduce whether group/global or unicast key by checking
335		 * the address (yech).  Note also that we can only mark global
336		 * keys default; doing this for a unicast key is an error.
337		 */
338		if (os_memcmp(addr, "\xff\xff\xff\xff\xff\xff",
339			      IEEE80211_ADDR_LEN) == 0) {
340			wk.ik_flags |= IEEE80211_KEY_GROUP;
341			wk.ik_keyix = key_idx;
342		} else {
343			wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
344				key_idx;
345		}
346	}
347	if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
348		wk.ik_flags |= IEEE80211_KEY_DEFAULT;
349	wk.ik_keylen = key_len;
350#ifdef WORDS_BIGENDIAN
351#define WPA_KEY_RSC_LEN 8
352	{
353		size_t i;
354		u8 tmp[WPA_KEY_RSC_LEN];
355		os_memset(tmp, 0, sizeof(tmp));
356		for (i = 0; i < seq_len; i++)
357			tmp[WPA_KEY_RSC_LEN - i - 1] = seq[i];
358		os_memcpy(&wk.ik_keyrsc, tmp, WPA_KEY_RSC_LEN);
359	}
360#else /* WORDS_BIGENDIAN */
361	os_memcpy(&wk.ik_keyrsc, seq, seq_len);
362#endif /* WORDS_BIGENDIAN */
363	os_memcpy(wk.ik_keydata, key, key_len);
364
365	return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
366}
367
368static int
369bsd_configure_wpa(void *priv, struct wpa_bss_params *params)
370{
371#ifndef IEEE80211_IOC_APPIE
372	static const char *ciphernames[] =
373		{ "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
374	int v;
375
376	switch (params->wpa_group) {
377	case WPA_CIPHER_CCMP:
378		v = IEEE80211_CIPHER_AES_CCM;
379		break;
380	case WPA_CIPHER_TKIP:
381		v = IEEE80211_CIPHER_TKIP;
382		break;
383	case WPA_CIPHER_WEP104:
384		v = IEEE80211_CIPHER_WEP;
385		break;
386	case WPA_CIPHER_WEP40:
387		v = IEEE80211_CIPHER_WEP;
388		break;
389	case WPA_CIPHER_NONE:
390		v = IEEE80211_CIPHER_NONE;
391		break;
392	default:
393		printf("Unknown group key cipher %u\n",
394			params->wpa_group);
395		return -1;
396	}
397	wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
398		   __func__, ciphernames[v], v);
399	if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) {
400		printf("Unable to set group key cipher to %u (%s)\n",
401			v, ciphernames[v]);
402		return -1;
403	}
404	if (v == IEEE80211_CIPHER_WEP) {
405		/* key length is done only for specific ciphers */
406		v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
407		if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) {
408			printf("Unable to set group key length to %u\n", v);
409			return -1;
410		}
411	}
412
413	v = 0;
414	if (params->wpa_pairwise & WPA_CIPHER_CCMP)
415		v |= 1<<IEEE80211_CIPHER_AES_CCM;
416	if (params->wpa_pairwise & WPA_CIPHER_TKIP)
417		v |= 1<<IEEE80211_CIPHER_TKIP;
418	if (params->wpa_pairwise & WPA_CIPHER_NONE)
419		v |= 1<<IEEE80211_CIPHER_NONE;
420	wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
421	if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) {
422		printf("Unable to set pairwise key ciphers to 0x%x\n", v);
423		return -1;
424	}
425
426	wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
427		   __func__, params->wpa_key_mgmt);
428	if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS,
429			  params->wpa_key_mgmt)) {
430		printf("Unable to set key management algorithms to 0x%x\n",
431			params->wpa_key_mgmt);
432		return -1;
433	}
434
435	v = 0;
436	if (params->rsn_preauth)
437		v |= BIT(0);
438	wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
439		   __func__, params->rsn_preauth);
440	if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) {
441		printf("Unable to set RSN capabilities to 0x%x\n", v);
442		return -1;
443	}
444#endif /* IEEE80211_IOC_APPIE */
445
446	wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
447	if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) {
448		printf("Unable to set WPA to %u\n", params->wpa);
449		return -1;
450	}
451	return 0;
452}
453
454static int
455bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
456{
457	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
458
459	if (!params->enabled) {
460		/* XXX restore state */
461		return set80211param(priv, IEEE80211_IOC_AUTHMODE,
462				     IEEE80211_AUTH_AUTO);
463	}
464	if (!params->wpa && !params->ieee802_1x) {
465		wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled",
466			   __func__);
467		return -1;
468	}
469	if (params->wpa && bsd_configure_wpa(priv, params) != 0) {
470		wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state",
471			   __func__);
472		return -1;
473	}
474	if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
475		(params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
476		wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X",
477			   __func__);
478		return -1;
479	}
480	return bsd_ctrl_iface(priv, 1);
481}
482
483static int
484bsd_set_sta_authorized(void *priv, const u8 *addr,
485		       int total_flags, int flags_or, int flags_and)
486{
487	int authorized = -1;
488
489	/* For now, only support setting Authorized flag */
490	if (flags_or & WPA_STA_AUTHORIZED)
491		authorized = 1;
492	if (!(flags_and & WPA_STA_AUTHORIZED))
493		authorized = 0;
494
495	if (authorized < 0)
496		return 0;
497
498	return bsd_send_mlme_param(priv, authorized ?
499				   IEEE80211_MLME_AUTHORIZE :
500				   IEEE80211_MLME_UNAUTHORIZE, 0, addr);
501}
502
503static void
504bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN])
505{
506	struct ieee80211req_wpaie ie;
507	int ielen = 0;
508	u8 *iebuf = NULL;
509
510	/*
511	 * Fetch and validate any negotiated WPA/RSN parameters.
512	 */
513	memset(&ie, 0, sizeof(ie));
514	memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
515	if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
516		printf("Failed to get WPA/RSN information element.\n");
517		goto no_ie;
518	}
519	iebuf = ie.wpa_ie;
520	ielen = ie.wpa_ie[1];
521	if (ielen == 0)
522		iebuf = NULL;
523	else
524		ielen += 2;
525
526no_ie:
527	drv_event_assoc(ctx, addr, iebuf, ielen);
528}
529
530static int
531bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
532	       int encrypt, const u8 *own_addr)
533{
534	struct bsd_driver_data *drv = priv;
535
536	wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len);
537
538	return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data,
539			      data_len);
540}
541
542static int
543bsd_set_freq(void *priv, u16 channel)
544{
545	struct bsd_driver_data *drv = priv;
546#ifdef SIOCS80211CHANNEL
547	struct ieee80211chanreq creq;
548#endif /* SIOCS80211CHANNEL */
549	u32 mode;
550
551	if (channel < 14)
552		mode = IFM_IEEE80211_11G;
553	else if (channel == 14)
554		mode = IFM_IEEE80211_11B;
555	else
556		mode = IFM_IEEE80211_11A;
557	if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) {
558		wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
559			   __func__);
560		return -1;
561	}
562
563#ifdef SIOCS80211CHANNEL
564	os_memset(&creq, 0, sizeof(creq));
565	os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name));
566	creq.i_channel = channel;
567	return ioctl(drv->sock, SIOCS80211CHANNEL, &creq);
568#else /* SIOCS80211CHANNEL */
569	return set80211param(priv, IEEE80211_IOC_CHANNEL, channel);
570#endif /* SIOCS80211CHANNEL */
571}
572
573static int
574bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
575{
576#ifdef IEEE80211_IOC_APPIE
577	wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__,
578		   (unsigned long)ie_len);
579	return bsd_set80211(priv, IEEE80211_IOC_APPIE, IEEE80211_APPIE_WPA,
580			    ie, ie_len);
581#endif /* IEEE80211_IOC_APPIE */
582	return 0;
583}
584
585
586#ifdef HOSTAPD
587
588/*
589 * Avoid conflicts with hostapd definitions by undefining couple of defines
590 * from net80211 header files.
591 */
592#undef RSN_VERSION
593#undef WPA_VERSION
594#undef WPA_OUI_TYPE
595
596static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
597			  int reason_code);
598
599static const char *
600ether_sprintf(const u8 *addr)
601{
602	static char buf[sizeof(MACSTR)];
603
604	if (addr != NULL)
605		snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
606	else
607		snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
608	return buf;
609}
610
611static int
612bsd_set_privacy(void *priv, int enabled)
613{
614	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
615
616	return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
617}
618
619static int
620bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
621	       u8 *seq)
622{
623	struct ieee80211req_key wk;
624
625	wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
626		   __func__, ether_sprintf(addr), idx);
627
628	memset(&wk, 0, sizeof(wk));
629	if (addr == NULL)
630		memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
631	else
632		memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
633	wk.ik_keyix = idx;
634
635	if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
636		printf("Failed to get encryption.\n");
637		return -1;
638	}
639
640#ifdef WORDS_BIGENDIAN
641#ifndef WPA_KEY_RSC_LEN
642#define WPA_KEY_RSC_LEN 8
643#endif
644	{
645		/*
646		 * wk.ik_keytsc is in host byte order (big endian), need to
647		 * swap it to match with the byte order used in WPA.
648		 */
649		int i;
650		u8 tmp[WPA_KEY_RSC_LEN];
651		memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
652		for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
653			seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
654		}
655	}
656#else /* WORDS_BIGENDIAN */
657	memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
658#endif /* WORDS_BIGENDIAN */
659	return 0;
660}
661
662
663static int
664bsd_flush(void *priv)
665{
666	u8 allsta[IEEE80211_ADDR_LEN];
667
668	memset(allsta, 0xff, IEEE80211_ADDR_LEN);
669	return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
670}
671
672
673static int
674bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
675			 const u8 *addr)
676{
677	struct ieee80211req_sta_stats stats;
678
679	memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
680	if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats))
681	    > 0) {
682		/* XXX? do packets counts include non-data frames? */
683		data->rx_packets = stats.is_stats.ns_rx_data;
684		data->rx_bytes = stats.is_stats.ns_rx_bytes;
685		data->tx_packets = stats.is_stats.ns_tx_data;
686		data->tx_bytes = stats.is_stats.ns_tx_bytes;
687	}
688	return 0;
689}
690
691static int
692bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
693{
694	return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
695				   addr);
696}
697
698static int
699bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
700		 int reason_code)
701{
702	return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
703				   addr);
704}
705
706static void
707bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
708{
709	struct bsd_driver_data *drv = ctx;
710	char buf[2048];
711	struct if_announcemsghdr *ifan;
712	struct rt_msghdr *rtm;
713	struct ieee80211_michael_event *mic;
714	struct ieee80211_join_event *join;
715	struct ieee80211_leave_event *leave;
716	int n;
717	union wpa_event_data data;
718
719	n = read(sock, buf, sizeof(buf));
720	if (n < 0) {
721		if (errno != EINTR && errno != EAGAIN)
722			perror("read(PF_ROUTE)");
723		return;
724	}
725
726	rtm = (struct rt_msghdr *) buf;
727	if (rtm->rtm_version != RTM_VERSION) {
728		wpa_printf(MSG_DEBUG, "Routing message version %d not "
729			"understood\n", rtm->rtm_version);
730		return;
731	}
732	ifan = (struct if_announcemsghdr *) rtm;
733	switch (rtm->rtm_type) {
734	case RTM_IEEE80211:
735		switch (ifan->ifan_what) {
736		case RTM_IEEE80211_ASSOC:
737		case RTM_IEEE80211_REASSOC:
738		case RTM_IEEE80211_DISASSOC:
739		case RTM_IEEE80211_SCAN:
740			break;
741		case RTM_IEEE80211_LEAVE:
742			leave = (struct ieee80211_leave_event *) &ifan[1];
743			drv_event_disassoc(drv->hapd, leave->iev_addr);
744			break;
745		case RTM_IEEE80211_JOIN:
746#ifdef RTM_IEEE80211_REJOIN
747		case RTM_IEEE80211_REJOIN:
748#endif
749			join = (struct ieee80211_join_event *) &ifan[1];
750			bsd_new_sta(drv, drv->hapd, join->iev_addr);
751			break;
752		case RTM_IEEE80211_REPLAY:
753			/* ignore */
754			break;
755		case RTM_IEEE80211_MICHAEL:
756			mic = (struct ieee80211_michael_event *) &ifan[1];
757			wpa_printf(MSG_DEBUG,
758				"Michael MIC failure wireless event: "
759				"keyix=%u src_addr=" MACSTR, mic->iev_keyix,
760				MAC2STR(mic->iev_src));
761			os_memset(&data, 0, sizeof(data));
762			data.michael_mic_failure.unicast = 1;
763			data.michael_mic_failure.src = mic->iev_src;
764			wpa_supplicant_event(drv->hapd,
765					     EVENT_MICHAEL_MIC_FAILURE, &data);
766			break;
767		}
768		break;
769	}
770}
771
772static void
773handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
774{
775	struct bsd_driver_data *drv = ctx;
776	drv_event_eapol_rx(drv->hapd, src_addr, buf, len);
777}
778
779static int
780hostapd_bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
781{
782	return bsd_set_freq(priv, freq->channel);
783}
784
785static void *
786bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
787{
788	struct bsd_driver_data *drv;
789
790	drv = os_zalloc(sizeof(struct bsd_driver_data));
791	if (drv == NULL) {
792		printf("Could not allocate memory for bsd driver data\n");
793		goto bad;
794	}
795
796	drv->hapd = hapd;
797	drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
798	if (drv->sock < 0) {
799		perror("socket[PF_INET,SOCK_DGRAM]");
800		goto bad;
801	}
802	os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
803
804	drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
805					handle_read, drv, 0);
806	if (drv->sock_xmit == NULL)
807		goto bad;
808	if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
809		goto bad;
810
811	/* mark down during setup */
812	if (bsd_ctrl_iface(drv, 0) < 0)
813		goto bad;
814
815	drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
816	if (drv->route < 0) {
817		perror("socket(PF_ROUTE,SOCK_RAW)");
818		goto bad;
819	}
820	eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv,
821				 NULL);
822
823	if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) {
824		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
825			   __func__);
826		goto bad;
827	}
828
829	return drv;
830bad:
831	if (drv->sock_xmit != NULL)
832		l2_packet_deinit(drv->sock_xmit);
833	if (drv->sock >= 0)
834		close(drv->sock);
835	if (drv != NULL)
836		os_free(drv);
837	return NULL;
838}
839
840
841static void
842bsd_deinit(void *priv)
843{
844	struct bsd_driver_data *drv = priv;
845
846	if (drv->route >= 0) {
847		eloop_unregister_read_sock(drv->route);
848		close(drv->route);
849	}
850	bsd_ctrl_iface(drv, 0);
851	if (drv->sock >= 0)
852		close(drv->sock);
853	if (drv->sock_xmit != NULL)
854		l2_packet_deinit(drv->sock_xmit);
855	os_free(drv);
856}
857
858#else /* HOSTAPD */
859
860static int
861get80211param(struct bsd_driver_data *drv, int op)
862{
863	struct ieee80211req ireq;
864
865	if (bsd_get80211(drv, &ireq, op, NULL, 0) < 0)
866		return -1;
867	return ireq.i_val;
868}
869
870static int
871wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
872{
873	struct bsd_driver_data *drv = priv;
874#ifdef SIOCG80211BSSID
875	struct ieee80211_bssid bs;
876
877	os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
878	if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
879		return -1;
880	os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
881	return 0;
882#else
883	return get80211var(drv, IEEE80211_IOC_BSSID,
884		bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
885#endif
886}
887
888static int
889wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
890{
891	struct bsd_driver_data *drv = priv;
892	return bsd_get_ssid(drv, ssid, 0);
893}
894
895static int
896wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie,
897			  size_t wpa_ie_len)
898{
899#ifdef IEEE80211_IOC_APPIE
900	return bsd_set_opt_ie(drv, wpa_ie, wpa_ie_len);
901#else /* IEEE80211_IOC_APPIE */
902	return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
903#endif /* IEEE80211_IOC_APPIE */
904}
905
906static int
907wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
908{
909	int ret = 0;
910
911	wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
912		__func__, wpa, privacy);
913
914	if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0)
915		ret = -1;
916	if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0)
917		ret = -1;
918	if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0)
919		ret = -1;
920
921	return ret;
922}
923
924static int
925wpa_driver_bsd_set_wpa(void *priv, int enabled)
926{
927	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
928
929	return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
930}
931
932static int
933wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
934{
935	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
936	return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
937}
938
939
940static int
941wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
942{
943	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
944	return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
945}
946
947static int
948wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
949{
950	return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
951				   addr);
952}
953
954static int
955wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
956{
957	return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
958				   addr);
959}
960
961static int
962wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
963{
964	int authmode;
965
966	if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
967	    (auth_alg & WPA_AUTH_ALG_SHARED))
968		authmode = IEEE80211_AUTH_AUTO;
969	else if (auth_alg & WPA_AUTH_ALG_SHARED)
970		authmode = IEEE80211_AUTH_SHARED;
971	else
972		authmode = IEEE80211_AUTH_OPEN;
973
974	return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode);
975}
976
977static void
978handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
979{
980	struct bsd_driver_data *drv = ctx;
981
982	drv_event_eapol_rx(drv->ctx, src_addr, buf, len);
983}
984
985static int
986wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
987{
988	struct bsd_driver_data *drv = priv;
989	struct ieee80211req_mlme mlme;
990	u32 mode;
991	u16 channel;
992	int privacy;
993	int ret = 0;
994
995	wpa_printf(MSG_DEBUG,
996		"%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
997		, __func__
998		   , (unsigned int) params->ssid_len, params->ssid
999		, (unsigned int) params->wpa_ie_len
1000		, params->pairwise_suite
1001		, params->group_suite
1002		, params->key_mgmt_suite
1003	);
1004
1005	switch (params->mode) {
1006	case IEEE80211_MODE_INFRA:
1007		mode = 0 /* STA */;
1008		break;
1009	case IEEE80211_MODE_IBSS:
1010		mode = IFM_IEEE80211_IBSS;
1011		break;
1012	case IEEE80211_MODE_AP:
1013		mode = IFM_IEEE80211_HOSTAP;
1014		break;
1015	default:
1016		wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__);
1017		return -1;
1018	}
1019	if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) {
1020		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1021			   __func__);
1022		return -1;
1023	}
1024
1025	if (params->mode == IEEE80211_MODE_AP) {
1026		if (params->freq >= 2412 && params->freq <= 2472)
1027			channel = (params->freq - 2407) / 5;
1028		else if (params->freq == 2484)
1029			channel = 14;
1030		else if ((params->freq >= 5180 && params->freq <= 5240) ||
1031			 (params->freq >= 5745 && params->freq <= 5825))
1032			channel = (params->freq - 5000) / 5;
1033		else
1034			channel = 0;
1035		if (bsd_set_freq(drv, channel) < 0)
1036			return -1;
1037
1038		drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
1039						handle_read, drv, 0);
1040		if (drv->sock_xmit == NULL)
1041			return -1;
1042		drv->is_ap = 1;
1043		return 0;
1044	}
1045
1046	if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1047	    < 0)
1048		ret = -1;
1049	if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1050		ret = -1;
1051	/* XXX error handling is wrong but unclear what to do... */
1052	if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1053		return -1;
1054
1055	privacy = !(params->pairwise_suite == CIPHER_NONE &&
1056	    params->group_suite == CIPHER_NONE &&
1057	    params->key_mgmt_suite == KEY_MGMT_NONE &&
1058	    params->wpa_ie_len == 0);
1059	wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1060
1061	if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1062		return -1;
1063
1064	if (params->wpa_ie_len &&
1065	    set80211param(drv, IEEE80211_IOC_WPA,
1066			  params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1067		return -1;
1068
1069	os_memset(&mlme, 0, sizeof(mlme));
1070	mlme.im_op = IEEE80211_MLME_ASSOC;
1071	if (params->ssid != NULL)
1072		os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1073	mlme.im_ssid_len = params->ssid_len;
1074	if (params->bssid != NULL)
1075		os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1076	if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1077		return -1;
1078	return ret;
1079}
1080
1081static int
1082wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1083{
1084	struct bsd_driver_data *drv = priv;
1085#ifdef IEEE80211_IOC_SCAN_MAX_SSID
1086	struct ieee80211_scan_req sr;
1087	int i;
1088#endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1089
1090	if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) {
1091		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1092			   __func__);
1093		return -1;
1094	}
1095
1096	if (set80211param(drv, IEEE80211_IOC_ROAMING,
1097			  IEEE80211_ROAMING_MANUAL) < 0) {
1098		wpa_printf(MSG_ERROR, "%s: failed to set "
1099			   "wpa_supplicant-based roaming: %s", __func__,
1100			   strerror(errno));
1101		return -1;
1102	}
1103
1104	if (wpa_driver_bsd_set_wpa(drv, 1) < 0) {
1105		wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__,
1106			   strerror(errno));
1107		return -1;
1108	}
1109
1110	/* NB: interface must be marked UP to do a scan */
1111	if (bsd_ctrl_iface(drv, 1) < 0)
1112		return -1;
1113
1114#ifdef IEEE80211_IOC_SCAN_MAX_SSID
1115	os_memset(&sr, 0, sizeof(sr));
1116	sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE |
1117		IEEE80211_IOC_SCAN_NOJOIN;
1118	sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
1119	if (params->num_ssids > 0) {
1120		sr.sr_nssid = params->num_ssids;
1121#if 0
1122		/* Boundary check is done by upper layer */
1123		if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
1124			sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
1125#endif
1126
1127		/* NB: check scan cache first */
1128		sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
1129	}
1130	for (i = 0; i < sr.sr_nssid; i++) {
1131		sr.sr_ssid[i].len = params->ssids[i].ssid_len;
1132		os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
1133			  sr.sr_ssid[i].len);
1134	}
1135
1136	/* NB: net80211 delivers a scan complete event so no need to poll */
1137	return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
1138#else /* IEEE80211_IOC_SCAN_MAX_SSID */
1139	/* set desired ssid before scan */
1140	if (bsd_set_ssid(drv, params->ssids[0].ssid,
1141			 params->ssids[0].ssid_len) < 0)
1142		return -1;
1143
1144	/* NB: net80211 delivers a scan complete event so no need to poll */
1145	return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1146#endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1147}
1148
1149static void
1150wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1151{
1152	struct bsd_driver_data *drv = sock_ctx;
1153	char buf[2048];
1154	struct if_announcemsghdr *ifan;
1155	struct if_msghdr *ifm;
1156	struct rt_msghdr *rtm;
1157	union wpa_event_data event;
1158	struct ieee80211_michael_event *mic;
1159	struct ieee80211_leave_event *leave;
1160	struct ieee80211_join_event *join;
1161	int n;
1162
1163	n = read(sock, buf, sizeof(buf));
1164	if (n < 0) {
1165		if (errno != EINTR && errno != EAGAIN)
1166			perror("read(PF_ROUTE)");
1167		return;
1168	}
1169
1170	rtm = (struct rt_msghdr *) buf;
1171	if (rtm->rtm_version != RTM_VERSION) {
1172		wpa_printf(MSG_DEBUG, "Routing message version %d not "
1173			"understood\n", rtm->rtm_version);
1174		return;
1175	}
1176	os_memset(&event, 0, sizeof(event));
1177	switch (rtm->rtm_type) {
1178	case RTM_IFANNOUNCE:
1179		ifan = (struct if_announcemsghdr *) rtm;
1180		if (ifan->ifan_index != drv->ifindex)
1181			break;
1182		os_strlcpy(event.interface_status.ifname, drv->ifname,
1183			   sizeof(event.interface_status.ifname));
1184		switch (ifan->ifan_what) {
1185		case IFAN_DEPARTURE:
1186			event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1187		default:
1188			event.interface_status.ievent = EVENT_INTERFACE_ADDED;
1189			break;
1190		}
1191		wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s (%d)",
1192			   event.interface_status.ifname,
1193			   ifan->ifan_what == IFAN_DEPARTURE ?
1194				"removed" : "added", ifan->ifan_what);
1195		wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1196		return;
1197	case RTM_IEEE80211:
1198		ifan = (struct if_announcemsghdr *) rtm;
1199		if (ifan->ifan_index != drv->ifindex)
1200			break;
1201		switch (ifan->ifan_what) {
1202		case RTM_IEEE80211_ASSOC:
1203		case RTM_IEEE80211_REASSOC:
1204			if (drv->is_ap)
1205				break;
1206			wpa_printf(MSG_DEBUG, "RTM_IEEE80211: (re)assoc (%d)",
1207			    ifan->ifan_what);
1208			wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1209			break;
1210		case RTM_IEEE80211_DISASSOC:
1211			if (drv->is_ap)
1212				break;
1213			wpa_printf(MSG_DEBUG, "RTM_IEEE80211: disassoc (%d)",
1214			    ifan->ifan_what);
1215			wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1216			break;
1217		case RTM_IEEE80211_SCAN:
1218			if (drv->is_ap)
1219				break;
1220			wpa_printf(MSG_DEBUG, "RTM_IEEE80211: scan result (%d)",
1221			    ifan->ifan_what);
1222			wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1223			break;
1224		case RTM_IEEE80211_LEAVE:
1225			leave = (struct ieee80211_leave_event *) &ifan[1];
1226			drv_event_disassoc(ctx, leave->iev_addr);
1227			break;
1228		case RTM_IEEE80211_JOIN:
1229#ifdef RTM_IEEE80211_REJOIN
1230		case RTM_IEEE80211_REJOIN:
1231#endif
1232			join = (struct ieee80211_join_event *) &ifan[1];
1233			bsd_new_sta(drv, ctx, join->iev_addr);
1234			break;
1235		case RTM_IEEE80211_REPLAY:
1236			wpa_printf(MSG_DEBUG, "RTM_IEEE80211: replay (%d)",
1237			    ifan->ifan_what);
1238			/* ignore */
1239			break;
1240		case RTM_IEEE80211_MICHAEL:
1241			mic = (struct ieee80211_michael_event *) &ifan[1];
1242			wpa_printf(MSG_DEBUG,
1243				"Michael MIC failure wireless event: "
1244				"keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1245				MAC2STR(mic->iev_src));
1246
1247			os_memset(&event, 0, sizeof(event));
1248			event.michael_mic_failure.unicast =
1249				!IEEE80211_IS_MULTICAST(mic->iev_dst);
1250			wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1251				&event);
1252			break;
1253		default:
1254			wpa_printf(MSG_DEBUG, "RTM_IEEE80211: ??? (%d)",
1255			    ifan->ifan_what);
1256			break;
1257		}
1258		break;
1259	case RTM_IFINFO:
1260		ifm = (struct if_msghdr *) rtm;
1261		if (ifm->ifm_index != drv->ifindex)
1262			break;
1263		if ((ifm->ifm_flags & IFF_UP) == 0 &&
1264		    (drv->flags & IFF_UP) != 0) {
1265			os_strlcpy(event.interface_status.ifname, drv->ifname,
1266				   sizeof(event.interface_status.ifname));
1267			event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1268			wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1269				   event.interface_status.ifname);
1270			wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1271		} else if ((ifm->ifm_flags & IFF_UP) != 0 &&
1272		    (drv->flags & IFF_UP) == 0) {
1273			os_strlcpy(event.interface_status.ifname, drv->ifname,
1274				sizeof(event.interface_status.ifname));
1275			event.interface_status.ievent = EVENT_INTERFACE_ADDED;
1276			wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' UP",
1277				   event.interface_status.ifname);
1278			wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1279		} else {
1280			os_strlcpy(event.interface_status.ifname, drv->ifname,
1281				sizeof(event.interface_status.ifname));
1282			wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' "
1283			    "if=%x drv=%x", event.interface_status.ifname,
1284			    ifm->ifm_flags, drv->flags);
1285 		}
1286		drv->flags = ifm->ifm_flags;
1287		break;
1288#ifdef RTM_OIFINFO
1289	case RTM_OIFINFO:
1290		wpa_printf(MSG_DEBUG, "RTM_OIFINFO ignored");
1291		break;
1292#endif
1293#ifdef RTM_OOIFINFO
1294	case RTM_OOIFINFO:
1295		wpa_printf(MSG_DEBUG, "RTM_OOIFINFO ignored");
1296		break;
1297#endif
1298#ifdef RTM_LOSING
1299	case RTM_LOSING:
1300		wpa_printf(MSG_DEBUG, "RTM_LOSING ignored");
1301		break;
1302#endif
1303#ifdef RTM_MISS
1304	case RTM_MISS:
1305		wpa_printf(MSG_DEBUG, "RTM_MISS ignored");
1306		break;
1307#endif
1308	default:
1309		wpa_printf(MSG_DEBUG, "RTM_???: %d", rtm->rtm_type);
1310		break;
1311	}
1312}
1313
1314static void
1315wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1316			      struct ieee80211req_scan_result *sr)
1317{
1318	struct wpa_scan_res *result, **tmp;
1319	size_t extra_len;
1320	u8 *pos;
1321
1322	extra_len = 2 + sr->isr_ssid_len;
1323	extra_len += 2 + sr->isr_nrates;
1324	extra_len += 3; /* ERP IE */
1325	extra_len += sr->isr_ie_len;
1326
1327	result = os_zalloc(sizeof(*result) + extra_len);
1328	if (result == NULL)
1329		return;
1330	os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1331	result->freq = sr->isr_freq;
1332	result->beacon_int = sr->isr_intval;
1333	result->caps = sr->isr_capinfo;
1334	result->qual = sr->isr_rssi;
1335	result->noise = sr->isr_noise;
1336
1337	pos = (u8 *)(result + 1);
1338
1339	*pos++ = WLAN_EID_SSID;
1340	*pos++ = sr->isr_ssid_len;
1341	os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1342	pos += sr->isr_ssid_len;
1343
1344	/*
1345	 * Deal all rates as supported rate.
1346	 * Because net80211 doesn't report extended supported rate or not.
1347	 */
1348	*pos++ = WLAN_EID_SUPP_RATES;
1349	*pos++ = sr->isr_nrates;
1350	os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1351	pos += sr->isr_nrates;
1352
1353	*pos++ = WLAN_EID_ERP_INFO;
1354	*pos++ = 1;
1355	*pos++ = sr->isr_erp;
1356
1357	os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1358	pos += sr->isr_ie_len;
1359
1360	result->ie_len = pos - (u8 *)(result + 1);
1361
1362	tmp = os_realloc(res->res,
1363			 (res->num + 1) * sizeof(struct wpa_scan_res *));
1364	if (tmp == NULL) {
1365		os_free(result);
1366		return;
1367	}
1368	tmp[res->num++] = result;
1369	res->res = tmp;
1370}
1371
1372struct wpa_scan_results *
1373wpa_driver_bsd_get_scan_results2(void *priv)
1374{
1375	struct ieee80211req_scan_result *sr;
1376	struct wpa_scan_results *res;
1377	int len, rest;
1378	uint8_t buf[24*1024], *pos;
1379
1380	len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1381	if (len < 0)
1382		return NULL;
1383
1384	res = os_zalloc(sizeof(*res));
1385	if (res == NULL)
1386		return NULL;
1387
1388	pos = buf;
1389	rest = len;
1390	while (rest >= sizeof(struct ieee80211req_scan_result)) {
1391		sr = (struct ieee80211req_scan_result *)pos;
1392		wpa_driver_bsd_add_scan_entry(res, sr);
1393		pos += sr->isr_len;
1394		rest -= sr->isr_len;
1395	}
1396
1397	wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1398		   len, (unsigned long)res->num);
1399
1400	return res;
1401}
1402
1403static int wpa_driver_bsd_capa(struct bsd_driver_data *drv)
1404{
1405#ifdef IEEE80211_IOC_DEVCAPS
1406/* kernel definitions copied from net80211/ieee80211_var.h */
1407#define IEEE80211_CIPHER_WEP            0
1408#define IEEE80211_CIPHER_TKIP           1
1409#define IEEE80211_CIPHER_AES_CCM        3
1410#define IEEE80211_CRYPTO_WEP            (1<<IEEE80211_CIPHER_WEP)
1411#define IEEE80211_CRYPTO_TKIP           (1<<IEEE80211_CIPHER_TKIP)
1412#define IEEE80211_CRYPTO_AES_CCM        (1<<IEEE80211_CIPHER_AES_CCM)
1413#define IEEE80211_C_HOSTAP      0x00000400      /* CAPABILITY: HOSTAP avail */
1414#define IEEE80211_C_WPA1        0x00800000      /* CAPABILITY: WPA1 avail */
1415#define IEEE80211_C_WPA2        0x01000000      /* CAPABILITY: WPA2 avail */
1416	struct ieee80211_devcaps_req devcaps;
1417
1418	if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps,
1419			sizeof(devcaps)) < 0) {
1420		wpa_printf(MSG_ERROR, "failed to IEEE80211_IOC_DEVCAPS: %s",
1421			   strerror(errno));
1422		return -1;
1423	}
1424
1425	wpa_printf(MSG_DEBUG, "%s: drivercaps=0x%08x,cryptocaps=0x%08x",
1426		   __func__, devcaps.dc_drivercaps, devcaps.dc_cryptocaps);
1427
1428	if (devcaps.dc_drivercaps & IEEE80211_C_WPA1)
1429		drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1430			WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1431	if (devcaps.dc_drivercaps & IEEE80211_C_WPA2)
1432		drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1433			WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1434
1435	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_WEP)
1436		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1437			WPA_DRIVER_CAPA_ENC_WEP104;
1438	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_TKIP)
1439		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1440	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_AES_CCM)
1441		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1442
1443	if (devcaps.dc_drivercaps & IEEE80211_C_HOSTAP)
1444		drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1445#undef IEEE80211_CIPHER_WEP
1446#undef IEEE80211_CIPHER_TKIP
1447#undef IEEE80211_CIPHER_AES_CCM
1448#undef IEEE80211_CRYPTO_WEP
1449#undef IEEE80211_CRYPTO_TKIP
1450#undef IEEE80211_CRYPTO_AES_CCM
1451#undef IEEE80211_C_HOSTAP
1452#undef IEEE80211_C_WPA1
1453#undef IEEE80211_C_WPA2
1454#else /* IEEE80211_IOC_DEVCAPS */
1455	/* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1456	drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1457		WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1458		WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1459		WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1460	drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1461		WPA_DRIVER_CAPA_ENC_WEP104 |
1462		WPA_DRIVER_CAPA_ENC_TKIP |
1463		WPA_DRIVER_CAPA_ENC_CCMP;
1464	drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1465#endif /* IEEE80211_IOC_DEVCAPS */
1466#ifdef IEEE80211_IOC_SCAN_MAX_SSID
1467	drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID;
1468#else /* IEEE80211_IOC_SCAN_MAX_SSID */
1469	drv->capa.max_scan_ssids = 1;
1470#endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1471	drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1472		WPA_DRIVER_AUTH_SHARED |
1473		WPA_DRIVER_AUTH_LEAP;
1474	return 0;
1475}
1476
1477static void *
1478wpa_driver_bsd_init(void *ctx, const char *ifname)
1479{
1480#define	GETPARAM(drv, param, v) \
1481	(((v) = get80211param(drv, param)) != -1)
1482	struct bsd_driver_data *drv;
1483
1484	drv = os_zalloc(sizeof(*drv));
1485	if (drv == NULL)
1486		return NULL;
1487	/*
1488	 * NB: We require the interface name be mappable to an index.
1489	 *     This implies we do not support having wpa_supplicant
1490	 *     wait for an interface to appear.  This seems ok; that
1491	 *     doesn't belong here; it's really the job of devd.
1492	 */
1493	drv->ifindex = if_nametoindex(ifname);
1494	if (drv->ifindex == 0) {
1495		wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1496			   __func__, ifname);
1497		goto fail1;
1498	}
1499	drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1500	if (drv->sock < 0)
1501		goto fail1;
1502	drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1503	if (drv->route < 0)
1504		goto fail;
1505	eloop_register_read_sock(drv->route,
1506		wpa_driver_bsd_event_receive, ctx, drv);
1507
1508	drv->ctx = ctx;
1509	os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1510
1511	/* Down interface during setup. */
1512	if (bsd_ctrl_iface(drv, 0) < 0)
1513		goto fail;
1514
1515	if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1516		wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1517			__func__, strerror(errno));
1518		goto fail;
1519	}
1520	if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1521		wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1522			__func__, strerror(errno));
1523		goto fail;
1524	}
1525	if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1526		wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1527			__func__, strerror(errno));
1528		goto fail;
1529	}
1530
1531	if (wpa_driver_bsd_capa(drv))
1532		goto fail;
1533
1534	return drv;
1535fail:
1536	close(drv->sock);
1537fail1:
1538	os_free(drv);
1539	return NULL;
1540#undef GETPARAM
1541}
1542
1543static void
1544wpa_driver_bsd_deinit(void *priv)
1545{
1546	struct bsd_driver_data *drv = priv;
1547
1548	wpa_driver_bsd_set_wpa(drv, 0);
1549	eloop_unregister_read_sock(drv->route);
1550
1551	/* NB: mark interface down */
1552	bsd_ctrl_iface(drv, 0);
1553
1554	wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1555	if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1556		wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1557			__func__);
1558
1559	if (drv->sock_xmit != NULL)
1560		l2_packet_deinit(drv->sock_xmit);
1561	(void) close(drv->route);		/* ioctl socket */
1562	(void) close(drv->sock);		/* event socket */
1563	os_free(drv);
1564}
1565
1566static int
1567wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa)
1568{
1569	struct bsd_driver_data *drv = priv;
1570
1571	os_memcpy(capa, &drv->capa, sizeof(*capa));
1572	return 0;
1573}
1574#endif /* HOSTAPD */
1575
1576
1577const struct wpa_driver_ops wpa_driver_bsd_ops = {
1578	.name			= "bsd",
1579	.desc			= "BSD 802.11 support",
1580#ifdef HOSTAPD
1581	.hapd_init		= bsd_init,
1582	.hapd_deinit		= bsd_deinit,
1583	.set_privacy		= bsd_set_privacy,
1584	.get_seqnum		= bsd_get_seqnum,
1585	.flush			= bsd_flush,
1586	.read_sta_data		= bsd_read_sta_driver_data,
1587	.sta_disassoc		= bsd_sta_disassoc,
1588	.sta_deauth		= bsd_sta_deauth,
1589	.set_freq		= hostapd_bsd_set_freq,
1590#else /* HOSTAPD */
1591	.init			= wpa_driver_bsd_init,
1592	.deinit			= wpa_driver_bsd_deinit,
1593	.get_bssid		= wpa_driver_bsd_get_bssid,
1594	.get_ssid		= wpa_driver_bsd_get_ssid,
1595	.set_countermeasures	= wpa_driver_bsd_set_countermeasures,
1596	.scan2			= wpa_driver_bsd_scan,
1597	.get_scan_results2	= wpa_driver_bsd_get_scan_results2,
1598	.deauthenticate		= wpa_driver_bsd_deauthenticate,
1599	.disassociate		= wpa_driver_bsd_disassociate,
1600	.associate		= wpa_driver_bsd_associate,
1601	.get_capa		= wpa_driver_bsd_get_capa,
1602#endif /* HOSTAPD */
1603	.set_key		= bsd_set_key,
1604	.set_ieee8021x		= bsd_set_ieee8021x,
1605	.hapd_set_ssid		= bsd_set_ssid,
1606	.hapd_get_ssid		= bsd_get_ssid,
1607	.hapd_send_eapol	= bsd_send_eapol,
1608	.sta_set_flags		= bsd_set_sta_authorized,
1609	.set_generic_elem	= bsd_set_opt_ie,
1610};
1611