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 software may be distributed under the terms of the BSD license.
7  * See README for more details.
8  */
9 
10 #include "includes.h"
11 #include <sys/ioctl.h>
12 #include <sys/sysctl.h>
13 
14 #include "common.h"
15 #include "driver.h"
16 #include "eloop.h"
17 #include "common/ieee802_11_defs.h"
18 #include "common/wpa_common.h"
19 
20 #include <net/if.h>
21 #include <net/if_media.h>
22 
23 #ifdef __NetBSD__
24 #include <net/if_ether.h>
25 #else
26 #include <net/ethernet.h>
27 #endif
28 #include <net/route.h>
29 
30 #ifdef __DragonFly__
31 #include <netproto/802_11/ieee80211_ioctl.h>
32 #include <netproto/802_11/ieee80211_dragonfly.h>
33 #else /* __DragonFly__ */
34 #ifdef __GLIBC__
35 #include <netinet/ether.h>
36 #endif /* __GLIBC__ */
37 #include <net80211/ieee80211.h>
38 #include <net80211/ieee80211_ioctl.h>
39 #include <net80211/ieee80211_crypto.h>
40 #endif /* __DragonFly__ || __GLIBC__ */
41 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
42 #include <net80211/ieee80211_freebsd.h>
43 #endif
44 #if __NetBSD__
45 #include <net80211/ieee80211_netbsd.h>
46 #endif
47 
48 #include "l2_packet/l2_packet.h"
49 
50 struct bsd_driver_global {
51 	void		*ctx;
52 	int		sock;			/* socket for 802.11 ioctls */
53 	int		route;			/* routing socket for events */
54 	char		*event_buf;
55 	size_t		event_buf_len;
56 	struct dl_list	ifaces;			/* list of interfaces */
57 };
58 
59 struct bsd_driver_data {
60 	struct dl_list	list;
61 	struct bsd_driver_global *global;
62 	struct hostapd_data *hapd;	/* back pointer */
63 
64 	struct l2_packet_data *sock_xmit;/* raw packet xmit socket */
65 	char	ifname[IFNAMSIZ+1];	/* interface name */
66 	int	flags;
67 	unsigned int ifindex;		/* interface index */
68 	int	if_removed;		/* has the interface been removed? */
69 	void	*ctx;
70 	struct wpa_driver_capa capa;	/* driver capability */
71 	int	is_ap;			/* Access point mode */
72 	int	prev_roaming;	/* roaming state to restore on deinit */
73 	int	prev_privacy;	/* privacy state to restore on deinit */
74 	int	prev_wpa;	/* wpa state to restore on deinit */
75 	enum ieee80211_opmode opmode;	/* operation mode */
76 };
77 
78 /* Generic functions for hostapd and wpa_supplicant */
79 
80 static struct bsd_driver_data *
bsd_get_drvindex(void * priv,unsigned int ifindex)81 bsd_get_drvindex(void *priv, unsigned int ifindex)
82 {
83 	struct bsd_driver_global *global = priv;
84 	struct bsd_driver_data *drv;
85 
86 	dl_list_for_each(drv, &global->ifaces, struct bsd_driver_data, list) {
87 		if (drv->ifindex == ifindex)
88 			return drv;
89 	}
90 	return NULL;
91 }
92 
93 #ifndef HOSTAPD
94 static struct bsd_driver_data *
bsd_get_drvname(void * priv,const char * ifname)95 bsd_get_drvname(void *priv, const char *ifname)
96 {
97 	struct bsd_driver_global *global = priv;
98 	struct bsd_driver_data *drv;
99 
100 	dl_list_for_each(drv, &global->ifaces, struct bsd_driver_data, list) {
101 		if (os_strcmp(drv->ifname, ifname) == 0)
102 			return drv;
103 	}
104 	return NULL;
105 }
106 #endif /* HOSTAPD */
107 
108 static int
bsd_set80211(void * priv,int op,int val,const void * arg,int arg_len)109 bsd_set80211(void *priv, int op, int val, const void *arg, int arg_len)
110 {
111 	struct bsd_driver_data *drv = priv;
112 	struct ieee80211req ireq;
113 
114 	if (drv->ifindex == 0 || drv->if_removed)
115 		return -1;
116 
117 	os_memset(&ireq, 0, sizeof(ireq));
118 	os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
119 	ireq.i_type = op;
120 	ireq.i_val = val;
121 	ireq.i_data = (void *) arg;
122 	ireq.i_len = arg_len;
123 
124 	if (ioctl(drv->global->sock, SIOCS80211, &ireq) < 0) {
125 		wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, val=%u, "
126 			   "arg_len=%u]: %s", op, val, arg_len,
127 			   strerror(errno));
128 		return -1;
129 	}
130 	return 0;
131 }
132 
133 static int
bsd_get80211(void * priv,struct ieee80211req * ireq,int op,void * arg,int arg_len)134 bsd_get80211(void *priv, struct ieee80211req *ireq, int op, void *arg,
135 	     int arg_len)
136 {
137 	struct bsd_driver_data *drv = priv;
138 
139 	os_memset(ireq, 0, sizeof(*ireq));
140 	os_strlcpy(ireq->i_name, drv->ifname, sizeof(ireq->i_name));
141 	ireq->i_type = op;
142 	ireq->i_len = arg_len;
143 	ireq->i_data = arg;
144 
145 	if (ioctl(drv->global->sock, SIOCG80211, ireq) < 0) {
146 		wpa_printf(MSG_ERROR, "ioctl[SIOCG80211, op=%u, "
147 			   "arg_len=%u]: %s", op, arg_len, strerror(errno));
148 		return -1;
149 	}
150 	return 0;
151 }
152 
153 static int
get80211var(struct bsd_driver_data * drv,int op,void * arg,int arg_len)154 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
155 {
156 	struct ieee80211req ireq;
157 
158 	if (bsd_get80211(drv, &ireq, op, arg, arg_len) < 0)
159 		return -1;
160 	return ireq.i_len;
161 }
162 
163 static int
set80211var(struct bsd_driver_data * drv,int op,const void * arg,int arg_len)164 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
165 {
166 	return bsd_set80211(drv, op, 0, arg, arg_len);
167 }
168 
169 static int
set80211param(struct bsd_driver_data * drv,int op,int arg)170 set80211param(struct bsd_driver_data *drv, int op, int arg)
171 {
172 	return bsd_set80211(drv, op, arg, NULL, 0);
173 }
174 
175 static int
bsd_get_ssid(void * priv,u8 * ssid,int len)176 bsd_get_ssid(void *priv, u8 *ssid, int len)
177 {
178 	struct bsd_driver_data *drv = priv;
179 #ifdef SIOCG80211NWID
180 	struct ieee80211_nwid nwid;
181 	struct ifreq ifr;
182 
183 	os_memset(&ifr, 0, sizeof(ifr));
184 	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
185 	ifr.ifr_data = (void *)&nwid;
186 	if (ioctl(drv->global->sock, SIOCG80211NWID, &ifr) < 0 ||
187 	    nwid.i_len > IEEE80211_NWID_LEN)
188 		return -1;
189 	os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
190 	return nwid.i_len;
191 #else
192 	return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN);
193 #endif
194 }
195 
196 static int
bsd_set_ssid(void * priv,const u8 * ssid,int ssid_len)197 bsd_set_ssid(void *priv, const u8 *ssid, int ssid_len)
198 {
199 	struct bsd_driver_data *drv = priv;
200 #ifdef SIOCS80211NWID
201 	struct ieee80211_nwid nwid;
202 	struct ifreq ifr;
203 
204 	os_memcpy(nwid.i_nwid, ssid, ssid_len);
205 	nwid.i_len = ssid_len;
206 	os_memset(&ifr, 0, sizeof(ifr));
207 	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
208 	ifr.ifr_data = (void *)&nwid;
209 	return ioctl(drv->global->sock, SIOCS80211NWID, &ifr);
210 #else
211 	return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
212 #endif
213 }
214 
215 static int
bsd_get_if_media(void * priv)216 bsd_get_if_media(void *priv)
217 {
218 	struct bsd_driver_data *drv = priv;
219 	struct ifmediareq ifmr;
220 
221 	os_memset(&ifmr, 0, sizeof(ifmr));
222 	os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
223 
224 	if (ioctl(drv->global->sock, SIOCGIFMEDIA, &ifmr) < 0) {
225 		wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__,
226 			   strerror(errno));
227 		return -1;
228 	}
229 
230 	return ifmr.ifm_current;
231 }
232 
233 static int
bsd_set_if_media(void * priv,int media)234 bsd_set_if_media(void *priv, int media)
235 {
236 	struct bsd_driver_data *drv = priv;
237 	struct ifreq ifr;
238 
239 	os_memset(&ifr, 0, sizeof(ifr));
240 	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
241 	ifr.ifr_media = media;
242 
243 	if (ioctl(drv->global->sock, SIOCSIFMEDIA, &ifr) < 0) {
244 		wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__,
245 			   strerror(errno));
246 		return -1;
247 	}
248 
249 	return 0;
250 }
251 
252 static int
bsd_set_mediaopt(void * priv,uint32_t mask,uint32_t mode)253 bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode)
254 {
255 	int media = bsd_get_if_media(priv);
256 
257 	if (media < 0)
258 		return -1;
259 	media &= ~mask;
260 	media |= mode;
261 	if (bsd_set_if_media(priv, media) < 0)
262 		return -1;
263 	return 0;
264 }
265 
266 static int
bsd_del_key(void * priv,const u8 * addr,int key_idx)267 bsd_del_key(void *priv, const u8 *addr, int key_idx)
268 {
269 	struct ieee80211req_del_key wk;
270 
271 	os_memset(&wk, 0, sizeof(wk));
272 	if (addr == NULL) {
273 		wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx);
274 		wk.idk_keyix = key_idx;
275 	} else {
276 		wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__,
277 			   MAC2STR(addr));
278 		os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
279 		wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE;	/* XXX */
280 	}
281 
282 	return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
283 }
284 
285 static int
bsd_send_mlme_param(void * priv,const u8 op,const u16 reason,const u8 * addr)286 bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr)
287 {
288 	struct ieee80211req_mlme mlme;
289 
290 	os_memset(&mlme, 0, sizeof(mlme));
291 	mlme.im_op = op;
292 	mlme.im_reason = reason;
293 	os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
294 	return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
295 }
296 
297 static int
bsd_ctrl_iface(void * priv,int enable)298 bsd_ctrl_iface(void *priv, int enable)
299 {
300 	struct bsd_driver_data *drv = priv;
301 	struct ifreq ifr;
302 
303 	os_memset(&ifr, 0, sizeof(ifr));
304 	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
305 
306 	if (ioctl(drv->global->sock, SIOCGIFFLAGS, &ifr) < 0) {
307 		wpa_printf(MSG_ERROR, "ioctl[SIOCGIFFLAGS]: %s",
308 			   strerror(errno));
309 		return -1;
310 	}
311 	drv->flags = ifr.ifr_flags;
312 
313 	if (enable) {
314 		if (ifr.ifr_flags & IFF_UP)
315 			return 0;
316 		ifr.ifr_flags |= IFF_UP;
317 	} else {
318 		if (!(ifr.ifr_flags & IFF_UP))
319 			return 0;
320 		ifr.ifr_flags &= ~IFF_UP;
321 	}
322 
323 	if (ioctl(drv->global->sock, SIOCSIFFLAGS, &ifr) < 0) {
324 		wpa_printf(MSG_ERROR, "ioctl[SIOCSIFFLAGS]: %s",
325 			   strerror(errno));
326 		return -1;
327 	}
328 
329 	drv->flags = ifr.ifr_flags;
330 	return 0;
331 }
332 
333 static int
bsd_set_key(const char * ifname,void * priv,enum wpa_alg alg,const unsigned char * addr,int key_idx,int set_tx,const u8 * seq,size_t seq_len,const u8 * key,size_t key_len)334 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
335 	    const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
336 	    size_t seq_len, const u8 *key, size_t key_len)
337 {
338 	struct ieee80211req_key wk;
339 #ifdef IEEE80211_KEY_NOREPLAY
340 	struct bsd_driver_data *drv = priv;
341 #endif /* IEEE80211_KEY_NOREPLAY */
342 
343 	wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
344 		   "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
345 		   set_tx, seq_len, key_len);
346 
347 	if (alg == WPA_ALG_NONE) {
348 #ifndef HOSTAPD
349 		if (addr == NULL || is_broadcast_ether_addr(addr))
350 			return bsd_del_key(priv, NULL, key_idx);
351 		else
352 #endif /* HOSTAPD */
353 			return bsd_del_key(priv, addr, key_idx);
354 	}
355 
356 	os_memset(&wk, 0, sizeof(wk));
357 	switch (alg) {
358 	case WPA_ALG_WEP:
359 		wk.ik_type = IEEE80211_CIPHER_WEP;
360 		break;
361 	case WPA_ALG_TKIP:
362 		wk.ik_type = IEEE80211_CIPHER_TKIP;
363 		break;
364 	case WPA_ALG_CCMP:
365 		wk.ik_type = IEEE80211_CIPHER_AES_CCM;
366 		break;
367 	default:
368 		wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg);
369 		return -1;
370 	}
371 
372 	wk.ik_flags = IEEE80211_KEY_RECV;
373 	if (set_tx)
374 		wk.ik_flags |= IEEE80211_KEY_XMIT;
375 
376 	if (addr == NULL) {
377 		os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
378 		wk.ik_keyix = key_idx;
379 	} else {
380 		os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
381 		/*
382 		 * Deduce whether group/global or unicast key by checking
383 		 * the address (yech).  Note also that we can only mark global
384 		 * keys default; doing this for a unicast key is an error.
385 		 */
386 		if (is_broadcast_ether_addr(addr)) {
387 			wk.ik_flags |= IEEE80211_KEY_GROUP;
388 			wk.ik_keyix = key_idx;
389 		} else {
390 			wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
391 				key_idx;
392 		}
393 	}
394 	if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
395 		wk.ik_flags |= IEEE80211_KEY_DEFAULT;
396 #ifndef HOSTAPD
397 #ifdef IEEE80211_KEY_NOREPLAY
398 	/*
399 	 * Ignore replay failures in IBSS and AHDEMO mode.
400 	 */
401 	if (drv->opmode == IEEE80211_M_IBSS ||
402 	    drv->opmode == IEEE80211_M_AHDEMO)
403 		wk.ik_flags |= IEEE80211_KEY_NOREPLAY;
404 #endif /* IEEE80211_KEY_NOREPLAY */
405 #endif /* HOSTAPD */
406 	wk.ik_keylen = key_len;
407 	if (seq) {
408 #ifdef WORDS_BIGENDIAN
409 		/*
410 		 * wk.ik_keyrsc is in host byte order (big endian), need to
411 		 * swap it to match with the byte order used in WPA.
412 		 */
413 		int i;
414 		u8 *keyrsc = (u8 *) &wk.ik_keyrsc;
415 		for (i = 0; i < seq_len; i++)
416 			keyrsc[WPA_KEY_RSC_LEN - i - 1] = seq[i];
417 #else /* WORDS_BIGENDIAN */
418 		os_memcpy(&wk.ik_keyrsc, seq, seq_len);
419 #endif /* WORDS_BIGENDIAN */
420 	}
421 	os_memcpy(wk.ik_keydata, key, key_len);
422 
423 	return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
424 }
425 
426 static int
bsd_configure_wpa(void * priv,struct wpa_bss_params * params)427 bsd_configure_wpa(void *priv, struct wpa_bss_params *params)
428 {
429 #ifndef IEEE80211_IOC_APPIE
430 	static const char *ciphernames[] =
431 		{ "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
432 	int v;
433 
434 	switch (params->wpa_group) {
435 	case WPA_CIPHER_CCMP:
436 		v = IEEE80211_CIPHER_AES_CCM;
437 		break;
438 	case WPA_CIPHER_TKIP:
439 		v = IEEE80211_CIPHER_TKIP;
440 		break;
441 	case WPA_CIPHER_WEP104:
442 		v = IEEE80211_CIPHER_WEP;
443 		break;
444 	case WPA_CIPHER_WEP40:
445 		v = IEEE80211_CIPHER_WEP;
446 		break;
447 	case WPA_CIPHER_NONE:
448 		v = IEEE80211_CIPHER_NONE;
449 		break;
450 	default:
451 		wpa_printf(MSG_INFO, "Unknown group key cipher %u",
452 			   params->wpa_group);
453 		return -1;
454 	}
455 	wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
456 		   __func__, ciphernames[v], v);
457 	if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) {
458 		wpa_printf(MSG_INFO,
459 			   "Unable to set group key cipher to %u (%s)",
460 			   v, ciphernames[v]);
461 		return -1;
462 	}
463 	if (v == IEEE80211_CIPHER_WEP) {
464 		/* key length is done only for specific ciphers */
465 		v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
466 		if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) {
467 			wpa_printf(MSG_INFO,
468 				   "Unable to set group key length to %u", v);
469 			return -1;
470 		}
471 	}
472 
473 	v = 0;
474 	if (params->wpa_pairwise & WPA_CIPHER_CCMP)
475 		v |= 1<<IEEE80211_CIPHER_AES_CCM;
476 	if (params->wpa_pairwise & WPA_CIPHER_TKIP)
477 		v |= 1<<IEEE80211_CIPHER_TKIP;
478 	if (params->wpa_pairwise & WPA_CIPHER_NONE)
479 		v |= 1<<IEEE80211_CIPHER_NONE;
480 	wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
481 	if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) {
482 		wpa_printf(MSG_INFO,
483 			   "Unable to set pairwise key ciphers to 0x%x", v);
484 		return -1;
485 	}
486 
487 	wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
488 		   __func__, params->wpa_key_mgmt);
489 	if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS,
490 			  params->wpa_key_mgmt)) {
491 		wpa_printf(MSG_INFO,
492 			   "Unable to set key management algorithms to 0x%x",
493 			   params->wpa_key_mgmt);
494 		return -1;
495 	}
496 
497 	v = 0;
498 	if (params->rsn_preauth)
499 		v |= BIT(0);
500 	wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
501 		   __func__, params->rsn_preauth);
502 	if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) {
503 		wpa_printf(MSG_INFO, "Unable to set RSN capabilities to 0x%x",
504 			   v);
505 		return -1;
506 	}
507 #endif /* IEEE80211_IOC_APPIE */
508 
509 	wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
510 	if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) {
511 		wpa_printf(MSG_INFO, "Unable to set WPA to %u", params->wpa);
512 		return -1;
513 	}
514 	return 0;
515 }
516 
517 static int
bsd_set_ieee8021x(void * priv,struct wpa_bss_params * params)518 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
519 {
520 	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
521 
522 	if (!params->enabled) {
523 		/* XXX restore state */
524 		return set80211param(priv, IEEE80211_IOC_AUTHMODE,
525 				     IEEE80211_AUTH_AUTO);
526 	}
527 	if (!params->wpa && !params->ieee802_1x) {
528 		wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled",
529 			   __func__);
530 		return -1;
531 	}
532 	if (params->wpa && bsd_configure_wpa(priv, params) != 0) {
533 		wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state",
534 			   __func__);
535 		return -1;
536 	}
537 	if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
538 		(params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
539 		wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X",
540 			   __func__);
541 		return -1;
542 	}
543 	return bsd_ctrl_iface(priv, 1);
544 }
545 
546 static void
bsd_new_sta(void * priv,void * ctx,u8 addr[IEEE80211_ADDR_LEN])547 bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN])
548 {
549 	struct ieee80211req_wpaie ie;
550 	int ielen = 0;
551 	u8 *iebuf = NULL;
552 
553 	/*
554 	 * Fetch and validate any negotiated WPA/RSN parameters.
555 	 */
556 	memset(&ie, 0, sizeof(ie));
557 	memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
558 	if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
559 		wpa_printf(MSG_INFO,
560 			   "Failed to get WPA/RSN information element");
561 		goto no_ie;
562 	}
563 	iebuf = ie.wpa_ie;
564 	ielen = ie.wpa_ie[1];
565 	if (ielen == 0)
566 		iebuf = NULL;
567 	else
568 		ielen += 2;
569 
570 no_ie:
571 	drv_event_assoc(ctx, addr, iebuf, ielen, 0);
572 }
573 
574 static int
bsd_send_eapol(void * priv,const u8 * addr,const u8 * data,size_t data_len,int encrypt,const u8 * own_addr,u32 flags)575 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
576 	       int encrypt, const u8 *own_addr, u32 flags)
577 {
578 	struct bsd_driver_data *drv = priv;
579 
580 	wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len);
581 
582 	return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data,
583 			      data_len);
584 }
585 
586 static int
bsd_set_freq(void * priv,struct hostapd_freq_params * freq)587 bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
588 {
589 	struct bsd_driver_data *drv = priv;
590 #ifdef SIOCS80211CHANNEL
591 	struct ieee80211chanreq creq;
592 #endif /* SIOCS80211CHANNEL */
593 	u32 mode;
594 	int channel = freq->channel;
595 
596 	if (channel < 14) {
597 		mode =
598 #ifdef CONFIG_IEEE80211N
599 			freq->ht_enabled ? IFM_IEEE80211_11NG :
600 #endif /* CONFIG_IEEE80211N */
601 		        IFM_IEEE80211_11G;
602 	} else if (channel == 14) {
603 		mode = IFM_IEEE80211_11B;
604 	} else {
605 		mode =
606 #ifdef CONFIG_IEEE80211N
607 			freq->ht_enabled ? IFM_IEEE80211_11NA :
608 #endif /* CONFIG_IEEE80211N */
609 			IFM_IEEE80211_11A;
610 	}
611 	if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) {
612 		wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
613 			   __func__);
614 		return -1;
615 	}
616 
617 #ifdef SIOCS80211CHANNEL
618 	os_memset(&creq, 0, sizeof(creq));
619 	os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name));
620 	creq.i_channel = (u_int16_t)channel;
621 	return ioctl(drv->global->sock, SIOCS80211CHANNEL, &creq);
622 #else /* SIOCS80211CHANNEL */
623 	return set80211param(priv, IEEE80211_IOC_CHANNEL, channel);
624 #endif /* SIOCS80211CHANNEL */
625 }
626 
627 static int
bsd_set_opt_ie(void * priv,const u8 * ie,size_t ie_len)628 bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
629 {
630 #ifdef IEEE80211_IOC_APPIE
631 	wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__,
632 		   (unsigned long)ie_len);
633 	return bsd_set80211(priv, IEEE80211_IOC_APPIE, IEEE80211_APPIE_WPA,
634 			    ie, ie_len);
635 #endif /* IEEE80211_IOC_APPIE */
636 	return 0;
637 }
638 
639 static size_t
rtbuf_len(void)640 rtbuf_len(void)
641 {
642 	size_t len;
643 
644 	int mib[6] = {CTL_NET, AF_ROUTE, 0, AF_INET, NET_RT_DUMP, 0};
645 
646 	if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
647 		wpa_printf(MSG_WARNING, "%s failed: %s", __func__,
648 			   strerror(errno));
649 		len = 2048;
650 	}
651 
652 	return len;
653 }
654 
655 #ifdef HOSTAPD
656 
657 /*
658  * Avoid conflicts with hostapd definitions by undefining couple of defines
659  * from net80211 header files.
660  */
661 #undef RSN_VERSION
662 #undef WPA_VERSION
663 #undef WPA_OUI_TYPE
664 
665 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
666 			  u16 reason_code);
667 
668 static const char *
ether_sprintf(const u8 * addr)669 ether_sprintf(const u8 *addr)
670 {
671 	static char buf[sizeof(MACSTR)];
672 
673 	if (addr != NULL)
674 		snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
675 	else
676 		snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
677 	return buf;
678 }
679 
680 static int
bsd_set_privacy(void * priv,int enabled)681 bsd_set_privacy(void *priv, int enabled)
682 {
683 	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
684 
685 	return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
686 }
687 
688 static int
bsd_get_seqnum(const char * ifname,void * priv,const u8 * addr,int idx,u8 * seq)689 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
690 	       u8 *seq)
691 {
692 	struct ieee80211req_key wk;
693 
694 	wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
695 		   __func__, ether_sprintf(addr), idx);
696 
697 	memset(&wk, 0, sizeof(wk));
698 	if (addr == NULL)
699 		memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
700 	else
701 		memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
702 	wk.ik_keyix = idx;
703 
704 	if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
705 		wpa_printf(MSG_INFO, "Failed to get encryption");
706 		return -1;
707 	}
708 
709 #ifdef WORDS_BIGENDIAN
710 	{
711 		/*
712 		 * wk.ik_keytsc is in host byte order (big endian), need to
713 		 * swap it to match with the byte order used in WPA.
714 		 */
715 		int i;
716 		u8 tmp[WPA_KEY_RSC_LEN];
717 		memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
718 		for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
719 			seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
720 		}
721 	}
722 #else /* WORDS_BIGENDIAN */
723 	memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
724 #endif /* WORDS_BIGENDIAN */
725 	return 0;
726 }
727 
728 
729 static int
bsd_flush(void * priv)730 bsd_flush(void *priv)
731 {
732 	u8 allsta[IEEE80211_ADDR_LEN];
733 
734 	memset(allsta, 0xff, IEEE80211_ADDR_LEN);
735 	return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
736 }
737 
738 
739 static int
bsd_read_sta_driver_data(void * priv,struct hostap_sta_driver_data * data,const u8 * addr)740 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
741 			 const u8 *addr)
742 {
743 	struct ieee80211req_sta_stats stats;
744 
745 	memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
746 	if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats))
747 	    > 0) {
748 		/* XXX? do packets counts include non-data frames? */
749 		data->rx_packets = stats.is_stats.ns_rx_data;
750 		data->rx_bytes = stats.is_stats.ns_rx_bytes;
751 		data->tx_packets = stats.is_stats.ns_tx_data;
752 		data->tx_bytes = stats.is_stats.ns_tx_bytes;
753 	}
754 	return 0;
755 }
756 
757 static int
bsd_sta_deauth(void * priv,const u8 * own_addr,const u8 * addr,u16 reason_code)758 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, u16 reason_code)
759 {
760 	return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
761 				   addr);
762 }
763 
764 static int
bsd_sta_disassoc(void * priv,const u8 * own_addr,const u8 * addr,u16 reason_code)765 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
766 		 u16 reason_code)
767 {
768 	return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
769 				   addr);
770 }
771 
772 static void
bsd_wireless_event_receive(int sock,void * ctx,void * sock_ctx)773 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
774 {
775 	struct bsd_driver_global *global = sock_ctx;
776 	struct bsd_driver_data *drv;
777 	struct if_announcemsghdr *ifan;
778 	struct rt_msghdr *rtm;
779 	struct ieee80211_michael_event *mic;
780 	struct ieee80211_join_event *join;
781 	struct ieee80211_leave_event *leave;
782 	int n;
783 	union wpa_event_data data;
784 
785 	n = read(sock, global->event_buf, global->event_buf_len);
786 	if (n < 0) {
787 		if (errno != EINTR && errno != EAGAIN)
788 			wpa_printf(MSG_ERROR, "%s read() failed: %s",
789 				   __func__, strerror(errno));
790 		return;
791 	}
792 
793 	rtm = (struct rt_msghdr *) global->event_buf;
794 	if (rtm->rtm_version != RTM_VERSION) {
795 		wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
796 			   rtm->rtm_version);
797 		return;
798 	}
799 	switch (rtm->rtm_type) {
800 	case RTM_IEEE80211:
801 		ifan = (struct if_announcemsghdr *) rtm;
802 		drv = bsd_get_drvindex(global, ifan->ifan_index);
803 		if (drv == NULL)
804 			return;
805 		switch (ifan->ifan_what) {
806 		case RTM_IEEE80211_ASSOC:
807 		case RTM_IEEE80211_REASSOC:
808 		case RTM_IEEE80211_DISASSOC:
809 		case RTM_IEEE80211_SCAN:
810 			break;
811 		case RTM_IEEE80211_LEAVE:
812 			leave = (struct ieee80211_leave_event *) &ifan[1];
813 			drv_event_disassoc(drv->hapd, leave->iev_addr);
814 			break;
815 		case RTM_IEEE80211_JOIN:
816 #ifdef RTM_IEEE80211_REJOIN
817 		case RTM_IEEE80211_REJOIN:
818 #endif
819 			join = (struct ieee80211_join_event *) &ifan[1];
820 			bsd_new_sta(drv, drv->hapd, join->iev_addr);
821 			break;
822 		case RTM_IEEE80211_REPLAY:
823 			/* ignore */
824 			break;
825 		case RTM_IEEE80211_MICHAEL:
826 			mic = (struct ieee80211_michael_event *) &ifan[1];
827 			wpa_printf(MSG_DEBUG,
828 				"Michael MIC failure wireless event: "
829 				"keyix=%u src_addr=" MACSTR, mic->iev_keyix,
830 				MAC2STR(mic->iev_src));
831 			os_memset(&data, 0, sizeof(data));
832 			data.michael_mic_failure.unicast = 1;
833 			data.michael_mic_failure.src = mic->iev_src;
834 			wpa_supplicant_event(drv->hapd,
835 					     EVENT_MICHAEL_MIC_FAILURE, &data);
836 			break;
837 		}
838 		break;
839 	}
840 }
841 
842 static void
handle_read(void * ctx,const u8 * src_addr,const u8 * buf,size_t len)843 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
844 {
845 	struct bsd_driver_data *drv = ctx;
846 	drv_event_eapol_rx(drv->hapd, src_addr, buf, len);
847 }
848 
849 static void *
bsd_init(struct hostapd_data * hapd,struct wpa_init_params * params)850 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
851 {
852 	struct bsd_driver_data *drv;
853 
854 	drv = os_zalloc(sizeof(struct bsd_driver_data));
855 	if (drv == NULL) {
856 		wpa_printf(MSG_ERROR, "Could not allocate memory for bsd driver data");
857 		return NULL;
858 	}
859 
860 	drv->ifindex = if_nametoindex(params->ifname);
861 	if (drv->ifindex == 0) {
862 		wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
863 			   __func__, params->ifname);
864 		goto bad;
865 	}
866 
867 	drv->hapd = hapd;
868 	drv->global = params->global_priv;
869 	os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
870 
871 	drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
872 					handle_read, drv, 0);
873 	if (drv->sock_xmit == NULL)
874 		goto bad;
875 	if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
876 		goto bad;
877 
878 	/* mark down during setup */
879 	if (bsd_ctrl_iface(drv, 0) < 0)
880 		goto bad;
881 
882 	if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) {
883 		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
884 			   __func__);
885 		goto bad;
886 	}
887 
888 	dl_list_add(&drv->global->ifaces, &drv->list);
889 
890 	return drv;
891 bad:
892 	if (drv->sock_xmit != NULL)
893 		l2_packet_deinit(drv->sock_xmit);
894 	os_free(drv);
895 	return NULL;
896 }
897 
898 
899 static void
bsd_deinit(void * priv)900 bsd_deinit(void *priv)
901 {
902 	struct bsd_driver_data *drv = priv;
903 
904 	if (drv->ifindex != 0)
905 		bsd_ctrl_iface(drv, 0);
906 	if (drv->sock_xmit != NULL)
907 		l2_packet_deinit(drv->sock_xmit);
908 	os_free(drv);
909 }
910 
911 
912 static int
bsd_commit(void * priv)913 bsd_commit(void *priv)
914 {
915 	return bsd_ctrl_iface(priv, 1);
916 }
917 
918 
919 static int
bsd_set_sta_authorized(void * priv,const u8 * addr,unsigned int total_flags,unsigned int flags_or,unsigned int flags_and)920 bsd_set_sta_authorized(void *priv, const u8 *addr,
921 		       unsigned int total_flags, unsigned int flags_or,
922 		       unsigned int flags_and)
923 {
924 	int authorized = -1;
925 
926 	/* For now, only support setting Authorized flag */
927 	if (flags_or & WPA_STA_AUTHORIZED)
928 		authorized = 1;
929 	if (!(flags_and & WPA_STA_AUTHORIZED))
930 		authorized = 0;
931 
932 	if (authorized < 0)
933 		return 0;
934 
935 	return bsd_send_mlme_param(priv, authorized ?
936 				   IEEE80211_MLME_AUTHORIZE :
937 				   IEEE80211_MLME_UNAUTHORIZE, 0, addr);
938 }
939 #else /* HOSTAPD */
940 
941 static int
get80211param(struct bsd_driver_data * drv,int op)942 get80211param(struct bsd_driver_data *drv, int op)
943 {
944 	struct ieee80211req ireq;
945 
946 	if (bsd_get80211(drv, &ireq, op, NULL, 0) < 0)
947 		return -1;
948 	return ireq.i_val;
949 }
950 
951 static int
wpa_driver_bsd_get_bssid(void * priv,u8 * bssid)952 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
953 {
954 	struct bsd_driver_data *drv = priv;
955 #ifdef SIOCG80211BSSID
956 	struct ieee80211_bssid bs;
957 
958 	os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
959 	if (ioctl(drv->global->sock, SIOCG80211BSSID, &bs) < 0)
960 		return -1;
961 	os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
962 	return 0;
963 #else
964 	return get80211var(drv, IEEE80211_IOC_BSSID,
965 		bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
966 #endif
967 }
968 
969 static int
wpa_driver_bsd_get_ssid(void * priv,u8 * ssid)970 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
971 {
972 	struct bsd_driver_data *drv = priv;
973 	return bsd_get_ssid(drv, ssid, 0);
974 }
975 
976 static int
wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data * drv,const u8 * wpa_ie,size_t wpa_ie_len)977 wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie,
978 			  size_t wpa_ie_len)
979 {
980 #ifdef IEEE80211_IOC_APPIE
981 	return bsd_set_opt_ie(drv, wpa_ie, wpa_ie_len);
982 #else /* IEEE80211_IOC_APPIE */
983 	return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
984 #endif /* IEEE80211_IOC_APPIE */
985 }
986 
987 static int
wpa_driver_bsd_set_wpa_internal(void * priv,int wpa,int privacy)988 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
989 {
990 	int ret = 0;
991 
992 	wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
993 		__func__, wpa, privacy);
994 
995 	if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0)
996 		ret = -1;
997 	if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0)
998 		ret = -1;
999 	if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0)
1000 		ret = -1;
1001 
1002 	return ret;
1003 }
1004 
1005 static int
wpa_driver_bsd_set_wpa(void * priv,int enabled)1006 wpa_driver_bsd_set_wpa(void *priv, int enabled)
1007 {
1008 	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1009 
1010 	return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
1011 }
1012 
1013 static int
wpa_driver_bsd_set_countermeasures(void * priv,int enabled)1014 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1015 {
1016 	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1017 	return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1018 }
1019 
1020 
1021 static int
wpa_driver_bsd_set_drop_unencrypted(void * priv,int enabled)1022 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1023 {
1024 	wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1025 	return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1026 }
1027 
1028 static int
wpa_driver_bsd_deauthenticate(void * priv,const u8 * addr,u16 reason_code)1029 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, u16 reason_code)
1030 {
1031 	return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
1032 				   addr);
1033 }
1034 
1035 static int
wpa_driver_bsd_set_auth_alg(void * priv,int auth_alg)1036 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1037 {
1038 	int authmode;
1039 
1040 	if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
1041 	    (auth_alg & WPA_AUTH_ALG_SHARED))
1042 		authmode = IEEE80211_AUTH_AUTO;
1043 	else if (auth_alg & WPA_AUTH_ALG_SHARED)
1044 		authmode = IEEE80211_AUTH_SHARED;
1045 	else
1046 		authmode = IEEE80211_AUTH_OPEN;
1047 
1048 	return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode);
1049 }
1050 
1051 static void
handle_read(void * ctx,const u8 * src_addr,const u8 * buf,size_t len)1052 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1053 {
1054 	struct bsd_driver_data *drv = ctx;
1055 
1056 	drv_event_eapol_rx(drv->ctx, src_addr, buf, len);
1057 }
1058 
1059 static int
wpa_driver_bsd_associate(void * priv,struct wpa_driver_associate_params * params)1060 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1061 {
1062 	struct bsd_driver_data *drv = priv;
1063 	struct ieee80211req_mlme mlme;
1064 	u32 mode;
1065 	int privacy;
1066 	int ret = 0;
1067 
1068 	wpa_printf(MSG_DEBUG,
1069 		"%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1070 		, __func__
1071 		   , (unsigned int) params->ssid_len, params->ssid
1072 		, (unsigned int) params->wpa_ie_len
1073 		, params->pairwise_suite
1074 		, params->group_suite
1075 		, params->key_mgmt_suite
1076 	);
1077 
1078 	switch (params->mode) {
1079 	case IEEE80211_MODE_INFRA:
1080 		mode = 0 /* STA */;
1081 		break;
1082 	case IEEE80211_MODE_IBSS:
1083 		mode = IFM_IEEE80211_IBSS;
1084 		break;
1085 	case IEEE80211_MODE_AP:
1086 		mode = IFM_IEEE80211_HOSTAP;
1087 		break;
1088 	default:
1089 		wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__);
1090 		return -1;
1091 	}
1092 	if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) {
1093 		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1094 			   __func__);
1095 		return -1;
1096 	}
1097 
1098 	if (params->mode == IEEE80211_MODE_AP) {
1099 		drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
1100 						handle_read, drv, 0);
1101 		if (drv->sock_xmit == NULL)
1102 			return -1;
1103 		drv->is_ap = 1;
1104 		return 0;
1105 	}
1106 
1107 	if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1108 	    < 0)
1109 		ret = -1;
1110 	if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1111 		ret = -1;
1112 	/* XXX error handling is wrong but unclear what to do... */
1113 	if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1114 		return -1;
1115 
1116 	privacy = !(params->pairwise_suite == WPA_CIPHER_NONE &&
1117 	    params->group_suite == WPA_CIPHER_NONE &&
1118 	    params->key_mgmt_suite == WPA_KEY_MGMT_NONE &&
1119 	    params->wpa_ie_len == 0);
1120 	wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1121 
1122 	if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1123 		return -1;
1124 
1125 	if (params->wpa_ie_len &&
1126 	    set80211param(drv, IEEE80211_IOC_WPA,
1127 			  params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1128 		return -1;
1129 
1130 	os_memset(&mlme, 0, sizeof(mlme));
1131 	mlme.im_op = IEEE80211_MLME_ASSOC;
1132 	if (params->ssid != NULL)
1133 		os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1134 	mlme.im_ssid_len = params->ssid_len;
1135 	if (params->bssid != NULL)
1136 		os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1137 	if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1138 		return -1;
1139 	return ret;
1140 }
1141 
1142 static int
wpa_driver_bsd_scan(void * priv,struct wpa_driver_scan_params * params)1143 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1144 {
1145 	struct bsd_driver_data *drv = priv;
1146 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1147 	struct ieee80211_scan_req sr;
1148 	int i;
1149 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1150 
1151 	if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) {
1152 		wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1153 			   __func__);
1154 		return -1;
1155 	}
1156 
1157 	if (set80211param(drv, IEEE80211_IOC_ROAMING,
1158 			  IEEE80211_ROAMING_MANUAL) < 0) {
1159 		wpa_printf(MSG_ERROR, "%s: failed to set "
1160 			   "wpa_supplicant-based roaming: %s", __func__,
1161 			   strerror(errno));
1162 		return -1;
1163 	}
1164 
1165 	if (wpa_driver_bsd_set_wpa(drv, 1) < 0) {
1166 		wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__,
1167 			   strerror(errno));
1168 		return -1;
1169 	}
1170 
1171 	/* NB: interface must be marked UP to do a scan */
1172 	if (bsd_ctrl_iface(drv, 1) < 0)
1173 		return -1;
1174 
1175 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1176 	os_memset(&sr, 0, sizeof(sr));
1177 	sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE |
1178 		IEEE80211_IOC_SCAN_NOJOIN;
1179 	sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
1180 	if (params->num_ssids > 0) {
1181 		sr.sr_nssid = params->num_ssids;
1182 #if 0
1183 		/* Boundary check is done by upper layer */
1184 		if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
1185 			sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
1186 #endif
1187 
1188 		/* NB: check scan cache first */
1189 		sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
1190 	}
1191 	for (i = 0; i < sr.sr_nssid; i++) {
1192 		sr.sr_ssid[i].len = params->ssids[i].ssid_len;
1193 		os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
1194 			  sr.sr_ssid[i].len);
1195 	}
1196 
1197 	/* NB: net80211 delivers a scan complete event so no need to poll */
1198 	return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
1199 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1200 	/* set desired ssid before scan */
1201 	if (bsd_set_ssid(drv, params->ssids[0].ssid,
1202 			 params->ssids[0].ssid_len) < 0)
1203 		return -1;
1204 
1205 	/* NB: net80211 delivers a scan complete event so no need to poll */
1206 	return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1207 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1208 }
1209 
1210 static void
wpa_driver_bsd_event_receive(int sock,void * ctx,void * sock_ctx)1211 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1212 {
1213 	struct bsd_driver_global *global = sock_ctx;
1214 	struct bsd_driver_data *drv;
1215 	struct if_announcemsghdr *ifan;
1216 	struct if_msghdr *ifm;
1217 	struct rt_msghdr *rtm;
1218 	union wpa_event_data event;
1219 	struct ieee80211_michael_event *mic;
1220 	struct ieee80211_leave_event *leave;
1221 	struct ieee80211_join_event *join;
1222 	int n;
1223 
1224 	n = read(sock, global->event_buf, global->event_buf_len);
1225 	if (n < 0) {
1226 		if (errno != EINTR && errno != EAGAIN)
1227 			wpa_printf(MSG_ERROR, "%s read() failed: %s",
1228 				   __func__, strerror(errno));
1229 		return;
1230 	}
1231 
1232 	rtm = (struct rt_msghdr *) global->event_buf;
1233 	if (rtm->rtm_version != RTM_VERSION) {
1234 		wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
1235 			   rtm->rtm_version);
1236 		return;
1237 	}
1238 	os_memset(&event, 0, sizeof(event));
1239 	switch (rtm->rtm_type) {
1240 	case RTM_IFANNOUNCE:
1241 		ifan = (struct if_announcemsghdr *) rtm;
1242 		switch (ifan->ifan_what) {
1243 		case IFAN_DEPARTURE:
1244 			drv = bsd_get_drvindex(global, ifan->ifan_index);
1245 			if (drv)
1246 				drv->if_removed = 1;
1247 			event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1248 			break;
1249 		case IFAN_ARRIVAL:
1250 			drv = bsd_get_drvname(global, ifan->ifan_name);
1251 			if (drv) {
1252 				drv->ifindex = ifan->ifan_index;
1253 				drv->if_removed = 0;
1254 			}
1255 			event.interface_status.ievent = EVENT_INTERFACE_ADDED;
1256 			break;
1257 		default:
1258 			wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: unknown action");
1259 			return;
1260 		}
1261 		wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1262 			   ifan->ifan_name,
1263 			   ifan->ifan_what == IFAN_DEPARTURE ?
1264 				"removed" : "added");
1265 		os_strlcpy(event.interface_status.ifname, ifan->ifan_name,
1266 			   sizeof(event.interface_status.ifname));
1267 		if (drv) {
1268 			wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS,
1269 					     &event);
1270 			/*
1271 			 * Set ifindex to zero after sending the event as the
1272 			 * event might query the driver to ensure a match.
1273 			 */
1274 			if (ifan->ifan_what == IFAN_DEPARTURE)
1275 				drv->ifindex = 0;
1276 		} else {
1277 			wpa_supplicant_event_global(global->ctx,
1278 						    EVENT_INTERFACE_STATUS,
1279 						    &event);
1280 		}
1281 		break;
1282 	case RTM_IEEE80211:
1283 		ifan = (struct if_announcemsghdr *) rtm;
1284 		drv = bsd_get_drvindex(global, ifan->ifan_index);
1285 		if (drv == NULL)
1286 			return;
1287 		switch (ifan->ifan_what) {
1288 		case RTM_IEEE80211_ASSOC:
1289 		case RTM_IEEE80211_REASSOC:
1290 			if (drv->is_ap)
1291 				break;
1292 			wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
1293 			break;
1294 		case RTM_IEEE80211_DISASSOC:
1295 			if (drv->is_ap)
1296 				break;
1297 			wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
1298 			break;
1299 		case RTM_IEEE80211_SCAN:
1300 			if (drv->is_ap)
1301 				break;
1302 			wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS,
1303 					     NULL);
1304 			break;
1305 		case RTM_IEEE80211_LEAVE:
1306 			leave = (struct ieee80211_leave_event *) &ifan[1];
1307 			drv_event_disassoc(drv->ctx, leave->iev_addr);
1308 			break;
1309 		case RTM_IEEE80211_JOIN:
1310 #ifdef RTM_IEEE80211_REJOIN
1311 		case RTM_IEEE80211_REJOIN:
1312 #endif
1313 			join = (struct ieee80211_join_event *) &ifan[1];
1314 			bsd_new_sta(drv, drv->ctx, join->iev_addr);
1315 			break;
1316 		case RTM_IEEE80211_REPLAY:
1317 			/* ignore */
1318 			break;
1319 		case RTM_IEEE80211_MICHAEL:
1320 			mic = (struct ieee80211_michael_event *) &ifan[1];
1321 			wpa_printf(MSG_DEBUG,
1322 				"Michael MIC failure wireless event: "
1323 				"keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1324 				MAC2STR(mic->iev_src));
1325 
1326 			os_memset(&event, 0, sizeof(event));
1327 			event.michael_mic_failure.unicast =
1328 				!IEEE80211_IS_MULTICAST(mic->iev_dst);
1329 			wpa_supplicant_event(drv->ctx,
1330 					     EVENT_MICHAEL_MIC_FAILURE, &event);
1331 			break;
1332 		}
1333 		break;
1334 	case RTM_IFINFO:
1335 		ifm = (struct if_msghdr *) rtm;
1336 		drv = bsd_get_drvindex(global, ifm->ifm_index);
1337 		if (drv == NULL)
1338 			return;
1339 		if ((ifm->ifm_flags & IFF_UP) == 0 &&
1340 		    (drv->flags & IFF_UP) != 0) {
1341 			wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1342 				   drv->ifname);
1343 			wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_DISABLED,
1344 					     NULL);
1345 		} else if ((ifm->ifm_flags & IFF_UP) != 0 &&
1346 		    (drv->flags & IFF_UP) == 0) {
1347 			wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' UP",
1348 				   drv->ifname);
1349 			wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED,
1350 					     NULL);
1351 		}
1352 		drv->flags = ifm->ifm_flags;
1353 		break;
1354 	}
1355 }
1356 
1357 static void
wpa_driver_bsd_add_scan_entry(struct wpa_scan_results * res,struct ieee80211req_scan_result * sr)1358 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1359 			      struct ieee80211req_scan_result *sr)
1360 {
1361 	struct wpa_scan_res *result, **tmp;
1362 	size_t extra_len;
1363 	u8 *pos;
1364 
1365 	extra_len = 2 + sr->isr_ssid_len;
1366 	extra_len += 2 + sr->isr_nrates;
1367 	extra_len += 3; /* ERP IE */
1368 	extra_len += sr->isr_ie_len;
1369 
1370 	result = os_zalloc(sizeof(*result) + extra_len);
1371 	if (result == NULL)
1372 		return;
1373 	os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1374 	result->freq = sr->isr_freq;
1375 	result->beacon_int = sr->isr_intval;
1376 	result->caps = sr->isr_capinfo;
1377 	result->qual = sr->isr_rssi;
1378 	result->noise = sr->isr_noise;
1379 
1380 #ifdef __FreeBSD__
1381 	/*
1382 	 * the rssi value reported by the kernel is in 0.5dB steps relative to
1383 	 * the reported noise floor. see ieee80211_node.h for details.
1384 	 */
1385 	result->level = sr->isr_rssi / 2 + sr->isr_noise;
1386 #else
1387 	result->level = sr->isr_rssi;
1388 #endif
1389 
1390 	pos = (u8 *)(result + 1);
1391 
1392 	*pos++ = WLAN_EID_SSID;
1393 	*pos++ = sr->isr_ssid_len;
1394 	os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1395 	pos += sr->isr_ssid_len;
1396 
1397 	/*
1398 	 * Deal all rates as supported rate.
1399 	 * Because net80211 doesn't report extended supported rate or not.
1400 	 */
1401 	*pos++ = WLAN_EID_SUPP_RATES;
1402 	*pos++ = sr->isr_nrates;
1403 	os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1404 	pos += sr->isr_nrates;
1405 
1406 	*pos++ = WLAN_EID_ERP_INFO;
1407 	*pos++ = 1;
1408 	*pos++ = sr->isr_erp;
1409 
1410 #if defined(__DragonFly__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
1411 	os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len + sr->isr_meshid_len,
1412 		  sr->isr_ie_len);
1413 #else
1414 	os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1415 #endif
1416 	pos += sr->isr_ie_len;
1417 
1418 	result->ie_len = pos - (u8 *)(result + 1);
1419 
1420 	tmp = os_realloc_array(res->res, res->num + 1,
1421 			       sizeof(struct wpa_scan_res *));
1422 	if (tmp == NULL) {
1423 		os_free(result);
1424 		return;
1425 	}
1426 	tmp[res->num++] = result;
1427 	res->res = tmp;
1428 }
1429 
1430 struct wpa_scan_results *
wpa_driver_bsd_get_scan_results2(void * priv)1431 wpa_driver_bsd_get_scan_results2(void *priv)
1432 {
1433 	struct ieee80211req_scan_result *sr;
1434 	struct wpa_scan_results *res;
1435 	int len, rest;
1436 	uint8_t buf[24*1024], *pos;
1437 
1438 	len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1439 	if (len < 0)
1440 		return NULL;
1441 
1442 	res = os_zalloc(sizeof(*res));
1443 	if (res == NULL)
1444 		return NULL;
1445 
1446 	pos = buf;
1447 	rest = len;
1448 	while (rest >= sizeof(struct ieee80211req_scan_result)) {
1449 		sr = (struct ieee80211req_scan_result *)pos;
1450 		wpa_driver_bsd_add_scan_entry(res, sr);
1451 		pos += sr->isr_len;
1452 		rest -= sr->isr_len;
1453 	}
1454 
1455 	wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1456 		   len, (unsigned long)res->num);
1457 
1458 	return res;
1459 }
1460 
wpa_driver_bsd_capa(struct bsd_driver_data * drv)1461 static int wpa_driver_bsd_capa(struct bsd_driver_data *drv)
1462 {
1463 #ifdef IEEE80211_IOC_DEVCAPS
1464 /* kernel definitions copied from net80211/ieee80211_var.h */
1465 #define IEEE80211_CIPHER_WEP            0
1466 #define IEEE80211_CIPHER_TKIP           1
1467 #define IEEE80211_CIPHER_AES_CCM        3
1468 #define IEEE80211_CRYPTO_WEP            (1<<IEEE80211_CIPHER_WEP)
1469 #define IEEE80211_CRYPTO_TKIP           (1<<IEEE80211_CIPHER_TKIP)
1470 #define IEEE80211_CRYPTO_AES_CCM        (1<<IEEE80211_CIPHER_AES_CCM)
1471 #define IEEE80211_C_HOSTAP      0x00000400      /* CAPABILITY: HOSTAP avail */
1472 #define IEEE80211_C_WPA1        0x00800000      /* CAPABILITY: WPA1 avail */
1473 #define IEEE80211_C_WPA2        0x01000000      /* CAPABILITY: WPA2 avail */
1474 	struct ieee80211_devcaps_req devcaps;
1475 
1476 	if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps,
1477 			sizeof(devcaps)) < 0) {
1478 		wpa_printf(MSG_ERROR, "failed to IEEE80211_IOC_DEVCAPS: %s",
1479 			   strerror(errno));
1480 		return -1;
1481 	}
1482 
1483 	wpa_printf(MSG_DEBUG, "%s: drivercaps=0x%08x,cryptocaps=0x%08x",
1484 		   __func__, devcaps.dc_drivercaps, devcaps.dc_cryptocaps);
1485 
1486 	if (devcaps.dc_drivercaps & IEEE80211_C_WPA1)
1487 		drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1488 			WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1489 	if (devcaps.dc_drivercaps & IEEE80211_C_WPA2)
1490 		drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1491 			WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1492 
1493 	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_WEP)
1494 		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1495 			WPA_DRIVER_CAPA_ENC_WEP104;
1496 	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_TKIP)
1497 		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1498 	if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_AES_CCM)
1499 		drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1500 
1501 	if (devcaps.dc_drivercaps & IEEE80211_C_HOSTAP)
1502 		drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1503 #undef IEEE80211_CIPHER_WEP
1504 #undef IEEE80211_CIPHER_TKIP
1505 #undef IEEE80211_CIPHER_AES_CCM
1506 #undef IEEE80211_CRYPTO_WEP
1507 #undef IEEE80211_CRYPTO_TKIP
1508 #undef IEEE80211_CRYPTO_AES_CCM
1509 #undef IEEE80211_C_HOSTAP
1510 #undef IEEE80211_C_WPA1
1511 #undef IEEE80211_C_WPA2
1512 #else /* IEEE80211_IOC_DEVCAPS */
1513 	/* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1514 	drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1515 		WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1516 		WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1517 		WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1518 	drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1519 		WPA_DRIVER_CAPA_ENC_WEP104 |
1520 		WPA_DRIVER_CAPA_ENC_TKIP |
1521 		WPA_DRIVER_CAPA_ENC_CCMP;
1522 	drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1523 #endif /* IEEE80211_IOC_DEVCAPS */
1524 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1525 	drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID;
1526 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1527 	drv->capa.max_scan_ssids = 1;
1528 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1529 	drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1530 		WPA_DRIVER_AUTH_SHARED |
1531 		WPA_DRIVER_AUTH_LEAP;
1532 	return 0;
1533 }
1534 
1535 static enum ieee80211_opmode
get80211opmode(struct bsd_driver_data * drv)1536 get80211opmode(struct bsd_driver_data *drv)
1537 {
1538 	struct ifmediareq ifmr;
1539 
1540 	(void) memset(&ifmr, 0, sizeof(ifmr));
1541 	(void) os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
1542 
1543 	if (ioctl(drv->global->sock, SIOCGIFMEDIA, (caddr_t)&ifmr) >= 0) {
1544 		if (ifmr.ifm_current & IFM_IEEE80211_ADHOC) {
1545 			if (ifmr.ifm_current & IFM_FLAG0)
1546 				return IEEE80211_M_AHDEMO;
1547 			else
1548 				return IEEE80211_M_IBSS;
1549 		}
1550 		if (ifmr.ifm_current & IFM_IEEE80211_HOSTAP)
1551 			return IEEE80211_M_HOSTAP;
1552 		if (ifmr.ifm_current & IFM_IEEE80211_MONITOR)
1553 			return IEEE80211_M_MONITOR;
1554 #ifdef IEEE80211_M_MBSS
1555 		if (ifmr.ifm_current & IFM_IEEE80211_MBSS)
1556 			return IEEE80211_M_MBSS;
1557 #endif /* IEEE80211_M_MBSS */
1558 	}
1559 	return IEEE80211_M_STA;
1560 }
1561 
1562 static void *
wpa_driver_bsd_init(void * ctx,const char * ifname,void * priv)1563 wpa_driver_bsd_init(void *ctx, const char *ifname, void *priv)
1564 {
1565 #define	GETPARAM(drv, param, v) \
1566 	(((v) = get80211param(drv, param)) != -1)
1567 	struct bsd_driver_data *drv;
1568 
1569 	drv = os_zalloc(sizeof(*drv));
1570 	if (drv == NULL)
1571 		return NULL;
1572 
1573 	/*
1574 	 * NB: We require the interface name be mappable to an index.
1575 	 *     This implies we do not support having wpa_supplicant
1576 	 *     wait for an interface to appear.  This seems ok; that
1577 	 *     doesn't belong here; it's really the job of devd.
1578 	 */
1579 	drv->ifindex = if_nametoindex(ifname);
1580 	if (drv->ifindex == 0) {
1581 		wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1582 			   __func__, ifname);
1583 		goto fail;
1584 	}
1585 
1586 	drv->ctx = ctx;
1587 	drv->global = priv;
1588 	os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1589 
1590 	if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1591 		wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1592 			__func__, strerror(errno));
1593 		goto fail;
1594 	}
1595 	if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1596 		wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1597 			__func__, strerror(errno));
1598 		goto fail;
1599 	}
1600 	if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1601 		wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1602 			__func__, strerror(errno));
1603 		goto fail;
1604 	}
1605 
1606 	if (wpa_driver_bsd_capa(drv))
1607 		goto fail;
1608 
1609 	/* Down interface during setup. */
1610 	if (bsd_ctrl_iface(drv, 0) < 0)
1611 		goto fail;
1612 
1613 	drv->opmode = get80211opmode(drv);
1614 	dl_list_add(&drv->global->ifaces, &drv->list);
1615 
1616 	return drv;
1617 fail:
1618 	os_free(drv);
1619 	return NULL;
1620 #undef GETPARAM
1621 }
1622 
1623 static void
wpa_driver_bsd_deinit(void * priv)1624 wpa_driver_bsd_deinit(void *priv)
1625 {
1626 	struct bsd_driver_data *drv = priv;
1627 
1628 	if (drv->ifindex != 0 && !drv->if_removed) {
1629 		wpa_driver_bsd_set_wpa(drv, 0);
1630 
1631 		/* NB: mark interface down */
1632 		bsd_ctrl_iface(drv, 0);
1633 
1634 		wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa,
1635 						drv->prev_privacy);
1636 
1637 		if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)
1638 		    < 0)
1639 			wpa_printf(MSG_DEBUG,
1640 				   "%s: failed to restore roaming state",
1641 				   __func__);
1642 	}
1643 
1644 	if (drv->sock_xmit != NULL)
1645 		l2_packet_deinit(drv->sock_xmit);
1646 	dl_list_del(&drv->list);
1647 	os_free(drv);
1648 }
1649 
1650 static int
wpa_driver_bsd_get_capa(void * priv,struct wpa_driver_capa * capa)1651 wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa)
1652 {
1653 	struct bsd_driver_data *drv = priv;
1654 
1655 	os_memcpy(capa, &drv->capa, sizeof(*capa));
1656 	return 0;
1657 }
1658 #endif /* HOSTAPD */
1659 
1660 static void *
bsd_global_init(void * ctx)1661 bsd_global_init(void *ctx)
1662 {
1663 	struct bsd_driver_global *global;
1664 
1665 	global = os_zalloc(sizeof(*global));
1666 	if (global == NULL)
1667 		return NULL;
1668 
1669 	global->ctx = ctx;
1670 	dl_list_init(&global->ifaces);
1671 
1672 	global->sock = socket(PF_INET, SOCK_DGRAM, 0);
1673 	if (global->sock < 0) {
1674 		wpa_printf(MSG_ERROR, "socket[PF_INET,SOCK_DGRAM]: %s",
1675 			   strerror(errno));
1676 		goto fail1;
1677 	}
1678 
1679 	global->route = socket(PF_ROUTE, SOCK_RAW, 0);
1680 	if (global->route < 0) {
1681 		wpa_printf(MSG_ERROR, "socket[PF_ROUTE,SOCK_RAW]: %s",
1682 			   strerror(errno));
1683 		goto fail;
1684 	}
1685 
1686 	global->event_buf_len = rtbuf_len();
1687 	global->event_buf = os_malloc(global->event_buf_len);
1688 	if (global->event_buf == NULL) {
1689 		wpa_printf(MSG_ERROR, "%s: os_malloc() failed", __func__);
1690 		goto fail;
1691 	}
1692 
1693 #ifdef HOSTAPD
1694 	eloop_register_read_sock(global->route, bsd_wireless_event_receive,
1695 				 NULL, global);
1696 
1697 #else /* HOSTAPD */
1698 	eloop_register_read_sock(global->route, wpa_driver_bsd_event_receive,
1699 				 NULL, global);
1700 #endif /* HOSTAPD */
1701 
1702 	return global;
1703 
1704 fail:
1705 	close(global->sock);
1706 fail1:
1707 	os_free(global);
1708 	return NULL;
1709 }
1710 
1711 static void
bsd_global_deinit(void * priv)1712 bsd_global_deinit(void *priv)
1713 {
1714 	struct bsd_driver_global *global = priv;
1715 
1716 	eloop_unregister_read_sock(global->route);
1717 	(void) close(global->route);
1718 	(void) close(global->sock);
1719 	os_free(global);
1720 }
1721 
1722 
1723 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1724 	.name			= "bsd",
1725 	.desc			= "BSD 802.11 support",
1726 	.global_init		= bsd_global_init,
1727 	.global_deinit		= bsd_global_deinit,
1728 #ifdef HOSTAPD
1729 	.hapd_init		= bsd_init,
1730 	.hapd_deinit		= bsd_deinit,
1731 	.set_privacy		= bsd_set_privacy,
1732 	.get_seqnum		= bsd_get_seqnum,
1733 	.flush			= bsd_flush,
1734 	.read_sta_data		= bsd_read_sta_driver_data,
1735 	.sta_disassoc		= bsd_sta_disassoc,
1736 	.sta_deauth		= bsd_sta_deauth,
1737 	.sta_set_flags		= bsd_set_sta_authorized,
1738 	.commit			= bsd_commit,
1739 #else /* HOSTAPD */
1740 	.init2			= wpa_driver_bsd_init,
1741 	.deinit			= wpa_driver_bsd_deinit,
1742 	.get_bssid		= wpa_driver_bsd_get_bssid,
1743 	.get_ssid		= wpa_driver_bsd_get_ssid,
1744 	.set_countermeasures	= wpa_driver_bsd_set_countermeasures,
1745 	.scan2			= wpa_driver_bsd_scan,
1746 	.get_scan_results2	= wpa_driver_bsd_get_scan_results2,
1747 	.deauthenticate		= wpa_driver_bsd_deauthenticate,
1748 	.associate		= wpa_driver_bsd_associate,
1749 	.get_capa		= wpa_driver_bsd_get_capa,
1750 #endif /* HOSTAPD */
1751 	.set_freq		= bsd_set_freq,
1752 	.set_key		= bsd_set_key,
1753 	.set_ieee8021x		= bsd_set_ieee8021x,
1754 	.hapd_set_ssid		= bsd_set_ssid,
1755 	.hapd_get_ssid		= bsd_get_ssid,
1756 	.hapd_send_eapol	= bsd_send_eapol,
1757 	.set_generic_elem	= bsd_set_opt_ie,
1758 };
1759