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Fix hostapd and wpa_supplicant comipilation on NetBSD 4.0.1
[thirdparty/hostap.git] / src / drivers / driver_bsd.c
CommitLineData
6fc6879b
JM		 1/*
2 * WPA Supplicant - driver interaction with BSD net80211 layer
3 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
c5121837 4 * Copyright (c) 2004, 2Wire, Inc
6fc6879b
JM		 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 "ieee802_11_defs.h"
23
24#include <net/if.h>
898d6921
JR		 25
26#ifdef __NetBSD__
27#include <net/if_ether.h>
28#define COMPAT_FREEBSD_NET80211
29#else
6fc6879b 30#include <net/ethernet.h>
898d6921 31#endif
131289d8 32#include <net/route.h>
6fc6879b
JM		 33
34#include <net80211/ieee80211.h>
35#include <net80211/ieee80211_crypto.h>
36#include <net80211/ieee80211_ioctl.h>
131289d8
MH		 37#if __FreeBSD__
38#include <net80211/ieee80211_freebsd.h>
39#endif
40#if __NetBSD__
41#include <net80211/ieee80211_netbsd.h>
42#endif
43
44#ifdef HOSTAPD
6fc6879b 45
c5121837
JM		 46/*
47 * Avoid conflicts with hostapd definitions by undefining couple of defines
48 * from net80211 header files.
49 */
50#undef RSN_VERSION
51#undef WPA_VERSION
52#undef WPA_OUI_TYPE
53
c5121837
JM		 54#include "l2_packet/l2_packet.h"
55#include "../../hostapd/hostapd.h"
56#include "../../hostapd/config.h"
57#include "../../hostapd/eapol_sm.h"
131289d8 58#include "../../hostapd/sta_flags.h"
c5121837
JM		 59
60struct bsd_driver_data {
61 struct hostapd_data *hapd; /* back pointer */
62
63 char iface[IFNAMSIZ + 1];
64 struct l2_packet_data *sock_xmit; /* raw packet xmit socket */
65 int ioctl_sock; /* socket for ioctl() use */
66 int wext_sock; /* socket for wireless events */
67};
68
731723a5
JM		 69static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
70 int reason_code);
c5121837
JM		 71
72static int
73set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
74{
75 struct ieee80211req ireq;
76
77 memset(&ireq, 0, sizeof(ireq));
78 os_strlcpy(ireq.i_name, drv->iface, IFNAMSIZ);
79 ireq.i_type = op;
80 ireq.i_len = arg_len;
81 ireq.i_data = (void *) arg;
82
83 if (ioctl(drv->ioctl_sock, SIOCS80211, &ireq) < 0) {
84 perror("ioctl[SIOCS80211]");
85 return -1;
86 }
87 return 0;
88}
89
90static int
91get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
92{
93 struct ieee80211req ireq;
94
95 memset(&ireq, 0, sizeof(ireq));
96 os_strlcpy(ireq.i_name, drv->iface, IFNAMSIZ);
97 ireq.i_type = op;
98 ireq.i_len = arg_len;
99 ireq.i_data = arg;
100
101 if (ioctl(drv->ioctl_sock, SIOCG80211, &ireq) < 0) {
102 perror("ioctl[SIOCG80211]");
103 return -1;
104 }
105 return ireq.i_len;
106}
107
108static int
109set80211param(struct bsd_driver_data *drv, int op, int arg)
110{
111 struct ieee80211req ireq;
112
113 memset(&ireq, 0, sizeof(ireq));
114 os_strlcpy(ireq.i_name, drv->iface, IFNAMSIZ);
115 ireq.i_type = op;
116 ireq.i_val = arg;
117
118 if (ioctl(drv->ioctl_sock, SIOCS80211, &ireq) < 0) {
119 perror("ioctl[SIOCS80211]");
120 return -1;
121 }
122 return 0;
123}
124
125static const char *
126ether_sprintf(const u8 *addr)
127{
128 static char buf[sizeof(MACSTR)];
129
130 if (addr != NULL)
131 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
132 else
133 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
134 return buf;
135}
136
137/*
138 * Configure WPA parameters.
139 */
140static int
141bsd_configure_wpa(struct bsd_driver_data *drv)
142{
143 static const char *ciphernames[] =
144 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
145 struct hostapd_data *hapd = drv->hapd;
146 struct hostapd_bss_config *conf = hapd->conf;
147 int v;
148
149 switch (conf->wpa_group) {
150 case WPA_CIPHER_CCMP:
151 v = IEEE80211_CIPHER_AES_CCM;
152 break;
153 case WPA_CIPHER_TKIP:
154 v = IEEE80211_CIPHER_TKIP;
155 break;
156 case WPA_CIPHER_WEP104:
157 v = IEEE80211_CIPHER_WEP;
158 break;
159 case WPA_CIPHER_WEP40:
160 v = IEEE80211_CIPHER_WEP;
161 break;
162 case WPA_CIPHER_NONE:
163 v = IEEE80211_CIPHER_NONE;
164 break;
165 default:
166 printf("Unknown group key cipher %u\n",
167 conf->wpa_group);
168 return -1;
169 }
170 wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
171 __func__, ciphernames[v], v);
172 if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
173 printf("Unable to set group key cipher to %u (%s)\n",
174 v, ciphernames[v]);
175 return -1;
176 }
177 if (v == IEEE80211_CIPHER_WEP) {
178 /* key length is done only for specific ciphers */
179 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
180 if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
181 printf("Unable to set group key length to %u\n", v);
182 return -1;
183 }
184 }
185
186 v = 0;
187 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
188 v |= 1<<IEEE80211_CIPHER_AES_CCM;
189 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
190 v |= 1<<IEEE80211_CIPHER_TKIP;
191 if (conf->wpa_pairwise & WPA_CIPHER_NONE)
192 v |= 1<<IEEE80211_CIPHER_NONE;
193 wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
194 if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
195 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
196 return -1;
197 }
198
199 wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
200 __func__, conf->wpa_key_mgmt);
201 if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, conf->wpa_key_mgmt)) {
202 printf("Unable to set key management algorithms to 0x%x\n",
203 conf->wpa_key_mgmt);
204 return -1;
205 }
206
207 v = 0;
208 if (conf->rsn_preauth)
209 v |= BIT(0);
210 wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
211 __func__, conf->rsn_preauth);
212 if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
213 printf("Unable to set RSN capabilities to 0x%x\n", v);
214 return -1;
215 }
216
217 wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, conf->wpa);
218 if (set80211param(drv, IEEE80211_IOC_WPA, conf->wpa)) {
219 printf("Unable to set WPA to %u\n", conf->wpa);
220 return -1;
221 }
222 return 0;
223}
224
225
226static int
227bsd_set_iface_flags(void *priv, int dev_up)
228{
229 struct bsd_driver_data *drv = priv;
230 struct ifreq ifr;
231
232 wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
233
234 if (drv->ioctl_sock < 0)
235 return -1;
236
237 memset(&ifr, 0, sizeof(ifr));
238 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
239
240 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
241 perror("ioctl[SIOCGIFFLAGS]");
242 return -1;
243 }
244
245 if (dev_up)
246 ifr.ifr_flags |= IFF_UP;
247 else
248 ifr.ifr_flags &= ~IFF_UP;
249
250 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
251 perror("ioctl[SIOCSIFFLAGS]");
252 return -1;
253 }
254
255 if (dev_up) {
256 memset(&ifr, 0, sizeof(ifr));
257 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
258 ifr.ifr_mtu = HOSTAPD_MTU;
259 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
260 perror("ioctl[SIOCSIFMTU]");
261 printf("Setting MTU failed - trying to survive with "
262 "current value\n");
263 }
264 }
265
266 return 0;
267}
268
269static int
270bsd_set_ieee8021x(const char *ifname, void *priv, int enabled)
271{
272 struct bsd_driver_data *drv = priv;
273 struct hostapd_data *hapd = drv->hapd;
274 struct hostapd_bss_config *conf = hapd->conf;
275
276 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
277
278 if (!enabled) {
279 /* XXX restore state */
280 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
281 IEEE80211_AUTH_AUTO);
282 }
283 if (!conf->wpa && !conf->ieee802_1x) {
284 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
285 HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
286 return -1;
287 }
288 if (conf->wpa && bsd_configure_wpa(drv) != 0) {
289 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
290 HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
291 return -1;
292 }
293 if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
294 (conf->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
295 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
296 HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
297 return -1;
298 }
299 return bsd_set_iface_flags(priv, 1);
300}
301
302static int
303bsd_set_privacy(const char *ifname, void *priv, int enabled)
304{
305 struct bsd_driver_data *drv = priv;
306
307 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
308
309 return set80211param(drv, IEEE80211_IOC_PRIVACY, enabled);
310}
311
312static int
313bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
314{
315 struct bsd_driver_data *drv = priv;
316 struct ieee80211req_mlme mlme;
317
318 wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
319 __func__, ether_sprintf(addr), authorized);
320
321 if (authorized)
322 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
323 else
324 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
325 mlme.im_reason = 0;
326 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
327 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
328}
329
330static int
331bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
332 int flags_and)
333{
334 /* For now, only support setting Authorized flag */
335 if (flags_or & WLAN_STA_AUTHORIZED)
336 return bsd_set_sta_authorized(priv, addr, 1);
337 if (!(flags_and & WLAN_STA_AUTHORIZED))
338 return bsd_set_sta_authorized(priv, addr, 0);
339 return 0;
340}
341
342static int
343bsd_del_key(void *priv, const u8 *addr, int key_idx)
344{
345 struct bsd_driver_data *drv = priv;
346 struct ieee80211req_del_key wk;
347
348 wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
349 __func__, ether_sprintf(addr), key_idx);
350
351 memset(&wk, 0, sizeof(wk));
352 if (addr != NULL) {
353 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
354 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
355 } else {
356 wk.idk_keyix = key_idx;
357 }
358
359 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
360}
361
362static int
363bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
364 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
365 size_t seq_len, const u8 *key, size_t key_len)
366{
367 struct bsd_driver_data *drv = priv;
368 struct ieee80211req_key wk;
369 u_int8_t cipher;
370
371 if (alg == WPA_ALG_NONE)
372 return bsd_del_key(drv, addr, key_idx);
373
374 wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
375 __func__, alg, ether_sprintf(addr), key_idx);
376
377 if (alg == WPA_ALG_WEP)
378 cipher = IEEE80211_CIPHER_WEP;
379 else if (alg == WPA_ALG_TKIP)
380 cipher = IEEE80211_CIPHER_TKIP;
381 else if (alg == WPA_ALG_CCMP)
382 cipher = IEEE80211_CIPHER_AES_CCM;
383 else {
384 printf("%s: unknown/unsupported algorithm %d\n",
385 __func__, alg);
386 return -1;
387 }
388
389 if (key_len > sizeof(wk.ik_keydata)) {
390 printf("%s: key length %d too big\n", __func__, key_len);
391 return -3;
392 }
393
394 memset(&wk, 0, sizeof(wk));
395 wk.ik_type = cipher;
396 wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
397 if (addr == NULL) {
398 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
399 wk.ik_keyix = key_idx;
400 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
401 } else {
402 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
403 wk.ik_keyix = IEEE80211_KEYIX_NONE;
404 }
405 wk.ik_keylen = key_len;
406 memcpy(wk.ik_keydata, key, key_len);
407
408 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
409}
410
411
412static int
413bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
414 u8 *seq)
415{
416 struct bsd_driver_data *drv = priv;
417 struct ieee80211req_key wk;
418
419 wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
420 __func__, ether_sprintf(addr), idx);
421
422 memset(&wk, 0, sizeof(wk));
423 if (addr == NULL)
424 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
425 else
426 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
427 wk.ik_keyix = idx;
428
429 if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
430 printf("Failed to get encryption.\n");
431 return -1;
432 }
433
434#ifdef WORDS_BIGENDIAN
435 {
436 /*
437 * wk.ik_keytsc is in host byte order (big endian), need to
438 * swap it to match with the byte order used in WPA.
439 */
440 int i;
441 u8 tmp[WPA_KEY_RSC_LEN];
442 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
443 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
444 seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
445 }
446 }
447#else /* WORDS_BIGENDIAN */
448 memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
449#endif /* WORDS_BIGENDIAN */
450 return 0;
451}
452
453
454static int
455bsd_flush(void *priv)
456{
457 u8 allsta[IEEE80211_ADDR_LEN];
458
459 memset(allsta, 0xff, IEEE80211_ADDR_LEN);
731723a5 460 return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
c5121837
JM		 461}
462
463
464static int
465bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
466 const u8 *addr)
467{
468 struct bsd_driver_data *drv = priv;
469 struct ieee80211req_sta_stats stats;
470
471 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
472 if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
473 /* XXX? do packets counts include non-data frames? */
474 data->rx_packets = stats.is_stats.ns_rx_data;
475 data->rx_bytes = stats.is_stats.ns_rx_bytes;
476 data->tx_packets = stats.is_stats.ns_tx_data;
477 data->tx_bytes = stats.is_stats.ns_tx_bytes;
478 }
479 return 0;
480}
481
482static int
483bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
484{
485 /*
486 * Do nothing; we setup parameters at startup that define the
487 * contents of the beacon information element.
488 */
489 return 0;
490}
491
492static int
731723a5 493bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
c5121837
JM		 494{
495 struct bsd_driver_data *drv = priv;
496 struct ieee80211req_mlme mlme;
497
498 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
499 __func__, ether_sprintf(addr), reason_code);
500
501 mlme.im_op = IEEE80211_MLME_DEAUTH;
502 mlme.im_reason = reason_code;
503 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
504 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
505}
506
507static int
731723a5
JM		 508bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
509 int reason_code)
c5121837
JM		 510{
511 struct bsd_driver_data *drv = priv;
512 struct ieee80211req_mlme mlme;
513
514 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
515 __func__, ether_sprintf(addr), reason_code);
516
517 mlme.im_op = IEEE80211_MLME_DISASSOC;
518 mlme.im_reason = reason_code;
519 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
520 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
521}
522
523static int
524bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
525{
526 struct hostapd_data *hapd = drv->hapd;
527 struct ieee80211req_wpaie ie;
528 int ielen = 0;
529 u8 *iebuf = NULL;
530
531 /*
532 * Fetch and validate any negotiated WPA/RSN parameters.
533 */
534 memset(&ie, 0, sizeof(ie));
535 memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
536 if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
537 printf("Failed to get WPA/RSN information element.\n");
538 goto no_ie;
539 }
540 iebuf = ie.wpa_ie;
541 ielen = ie.wpa_ie[1];
542 if (ielen == 0)
543 iebuf = NULL;
544 else
545 ielen += 2;
546
547no_ie:
548 return hostapd_notif_assoc(hapd, addr, iebuf, ielen);
549}
550
c5121837
JM		 551static void
552bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
553{
554 struct bsd_driver_data *drv = ctx;
555 struct hostapd_data *hapd = drv->hapd;
556 char buf[2048];
557 struct if_announcemsghdr *ifan;
558 struct rt_msghdr *rtm;
559 struct ieee80211_michael_event *mic;
560 struct ieee80211_join_event *join;
561 struct ieee80211_leave_event *leave;
562 int n;
563
564 n = read(sock, buf, sizeof(buf));
565 if (n < 0) {
566 if (errno != EINTR && errno != EAGAIN)
567 perror("read(PF_ROUTE)");
568 return;
569 }
570
571 rtm = (struct rt_msghdr *) buf;
572 if (rtm->rtm_version != RTM_VERSION) {
573 wpa_printf(MSG_DEBUG, "Routing message version %d not "
574 "understood\n", rtm->rtm_version);
575 return;
576 }
577 ifan = (struct if_announcemsghdr *) rtm;
578 switch (rtm->rtm_type) {
579 case RTM_IEEE80211:
580 switch (ifan->ifan_what) {
581 case RTM_IEEE80211_ASSOC:
582 case RTM_IEEE80211_REASSOC:
583 case RTM_IEEE80211_DISASSOC:
584 case RTM_IEEE80211_SCAN:
585 break;
586 case RTM_IEEE80211_LEAVE:
587 leave = (struct ieee80211_leave_event *) &ifan[1];
588 hostapd_notif_disassoc(drv->hapd, leave->iev_addr);
589 break;
590 case RTM_IEEE80211_JOIN:
591#ifdef RTM_IEEE80211_REJOIN
592 case RTM_IEEE80211_REJOIN:
593#endif
594 join = (struct ieee80211_join_event *) &ifan[1];
595 bsd_new_sta(drv, join->iev_addr);
596 break;
597 case RTM_IEEE80211_REPLAY:
598 /* ignore */
599 break;
600 case RTM_IEEE80211_MICHAEL:
601 mic = (struct ieee80211_michael_event *) &ifan[1];
602 wpa_printf(MSG_DEBUG,
603 "Michael MIC failure wireless event: "
604 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
605 MAC2STR(mic->iev_src));
606 hostapd_michael_mic_failure(hapd, mic->iev_src);
607 break;
608 }
609 break;
610 }
611}
612
613static int
614bsd_wireless_event_init(struct bsd_driver_data *drv)
615{
616 int s;
617
618 drv->wext_sock = -1;
619
620 s = socket(PF_ROUTE, SOCK_RAW, 0);
621 if (s < 0) {
622 perror("socket(PF_ROUTE,SOCK_RAW)");
623 return -1;
624 }
625 eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
626 drv->wext_sock = s;
627
628 return 0;
629}
630
631static void
632bsd_wireless_event_deinit(struct bsd_driver_data *drv)
633{
634 if (drv->wext_sock < 0)
635 return;
636 eloop_unregister_read_sock(drv->wext_sock);
637 close(drv->wext_sock);
638}
639
640
641static int
642bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
643 int encrypt, const u8 *own_addr)
644{
645 struct bsd_driver_data *drv = priv;
646 unsigned char buf[3000];
647 unsigned char *bp = buf;
648 struct l2_ethhdr *eth;
649 size_t len;
650 int status;
651
652 /*
653 * Prepend the Etherent header. If the caller left us
654 * space at the front we could just insert it but since
655 * we don't know we copy to a local buffer. Given the frequency
656 * and size of frames this probably doesn't matter.
657 */
658 len = data_len + sizeof(struct l2_ethhdr);
659 if (len > sizeof(buf)) {
660 bp = malloc(len);
661 if (bp == NULL) {
662 printf("EAPOL frame discarded, cannot malloc temp "
663 "buffer of size %u!\n", len);
664 return -1;
665 }
666 }
667 eth = (struct l2_ethhdr *) bp;
668 memcpy(eth->h_dest, addr, ETH_ALEN);
669 memcpy(eth->h_source, own_addr, ETH_ALEN);
670 eth->h_proto = htons(ETH_P_EAPOL);
671 memcpy(eth+1, data, data_len);
672
673 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
674
675 status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
676
677 if (bp != buf)
678 free(bp);
679 return status;
680}
681
682static void
683handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
684{
685 struct bsd_driver_data *drv = ctx;
686 hostapd_eapol_receive(drv->hapd, src_addr,
687 buf + sizeof(struct l2_ethhdr),
688 len - sizeof(struct l2_ethhdr));
689}
690
691static int
692bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
693{
694 struct bsd_driver_data *drv = priv;
695 int ssid_len = get80211var(drv, IEEE80211_IOC_SSID, buf, len);
696
697 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
698
699 return ssid_len;
700}
701
702static int
703bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
704{
705 struct bsd_driver_data *drv = priv;
706
707 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
708
709 return set80211var(drv, IEEE80211_IOC_SSID, buf, len);
710}
711
712static void *
92f475b4 713bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
c5121837
JM		 714{
715 struct bsd_driver_data *drv;
716
717 drv = os_zalloc(sizeof(struct bsd_driver_data));
718 if (drv == NULL) {
719 printf("Could not allocate memory for bsd driver data\n");
720 goto bad;
721 }
722
723 drv->hapd = hapd;
724 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
725 if (drv->ioctl_sock < 0) {
726 perror("socket[PF_INET,SOCK_DGRAM]");
727 goto bad;
728 }
412036f5 729 memcpy(drv->iface, params->ifname, sizeof(drv->iface));
c5121837
JM		 730
731 drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
732 handle_read, drv, 1);
733 if (drv->sock_xmit == NULL)
734 goto bad;
412036f5 735 if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
c5121837
JM		 736 goto bad;
737
738 bsd_set_iface_flags(drv, 0); /* mark down during setup */
739 if (bsd_wireless_event_init(drv))
740 goto bad;
741
742 return drv;
743bad:
744 if (drv->sock_xmit != NULL)
745 l2_packet_deinit(drv->sock_xmit);
746 if (drv->ioctl_sock >= 0)
747 close(drv->ioctl_sock);
748 if (drv != NULL)
749 free(drv);
750 return NULL;
751}
752
753
754static void
755bsd_deinit(void *priv)
756{
757 struct bsd_driver_data *drv = priv;
758
759 bsd_wireless_event_deinit(drv);
760 (void) bsd_set_iface_flags(drv, 0);
761 if (drv->ioctl_sock >= 0)
762 close(drv->ioctl_sock);
763 if (drv->sock_xmit != NULL)
764 l2_packet_deinit(drv->sock_xmit);
765 free(drv);
766}
767
768const struct wpa_driver_ops wpa_driver_bsd_ops = {
769 .name = "bsd",
770 .hapd_init = bsd_init,
771 .hapd_deinit = bsd_deinit,
772 .set_ieee8021x = bsd_set_ieee8021x,
773 .set_privacy = bsd_set_privacy,
774 .hapd_set_key = bsd_set_key,
775 .get_seqnum = bsd_get_seqnum,
776 .flush = bsd_flush,
777 .set_generic_elem = bsd_set_opt_ie,
778 .sta_set_flags = bsd_sta_set_flags,
779 .read_sta_data = bsd_read_sta_driver_data,
780 .hapd_send_eapol = bsd_send_eapol,
781 .sta_disassoc = bsd_sta_disassoc,
782 .sta_deauth = bsd_sta_deauth,
783 .hapd_set_ssid = bsd_set_ssid,
784 .hapd_get_ssid = bsd_get_ssid,
785};
786
787#else /* HOSTAPD */
788
6fc6879b
JM		 789struct wpa_driver_bsd_data {
790 int sock; /* open socket for 802.11 ioctls */
791 int route; /* routing socket for events */
792 char ifname[IFNAMSIZ+1]; /* interface name */
793 unsigned int ifindex; /* interface index */
794 void *ctx;
795 int prev_roaming; /* roaming state to restore on deinit */
796 int prev_privacy; /* privacy state to restore on deinit */
797 int prev_wpa; /* wpa state to restore on deinit */
798};
799
800static int
801set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
802{
803 struct ieee80211req ireq;
804
805 os_memset(&ireq, 0, sizeof(ireq));
806 os_strlcpy(ireq.i_name, drv->ifname, IFNAMSIZ);
807 ireq.i_type = op;
808 ireq.i_len = arg_len;
809 ireq.i_data = (void *) arg;
810
811 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
812 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
813 op, arg_len, strerror(errno));
814 return -1;
815 }
816 return 0;
817}
818
819static int
820get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
821{
822 struct ieee80211req ireq;
823
824 os_memset(&ireq, 0, sizeof(ireq));
825 os_strlcpy(ireq.i_name, drv->ifname, IFNAMSIZ);
826 ireq.i_type = op;
827 ireq.i_len = arg_len;
828 ireq.i_data = arg;
829
830 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
831 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
832 op, arg_len, strerror(errno));
833 return -1;
834 }
835 return ireq.i_len;
836}
837
838static int
839set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
840{
841 struct ieee80211req ireq;
842
843 os_memset(&ireq, 0, sizeof(ireq));
844 os_strlcpy(ireq.i_name, drv->ifname, IFNAMSIZ);
845 ireq.i_type = op;
846 ireq.i_val = arg;
847
848 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
849 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
850 op, arg, strerror(errno));
851 return -1;
852 }
853 return 0;
854}
855
856static int
857get80211param(struct wpa_driver_bsd_data *drv, int op)
858{
859 struct ieee80211req ireq;
860
861 os_memset(&ireq, 0, sizeof(ireq));
862 os_strlcpy(ireq.i_name, drv->ifname, IFNAMSIZ);
863 ireq.i_type = op;
864
865 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
866 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
867 op, strerror(errno));
868 return -1;
869 }
870 return ireq.i_val;
871}
872
873static int
874getifflags(struct wpa_driver_bsd_data *drv, int *flags)
875{
876 struct ifreq ifr;
877
878 os_memset(&ifr, 0, sizeof(ifr));
879 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
880 if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
881 perror("SIOCGIFFLAGS");
882 return errno;
883 }
884 *flags = ifr.ifr_flags & 0xffff;
885 return 0;
886}
887
888static int
889setifflags(struct wpa_driver_bsd_data *drv, int flags)
890{
891 struct ifreq ifr;
892
893 os_memset(&ifr, 0, sizeof(ifr));
894 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
895 ifr.ifr_flags = flags & 0xffff;
896 if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
897 perror("SIOCSIFFLAGS");
898 return errno;
899 }
900 return 0;
901}
902
903static int
904wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
905{
906 struct wpa_driver_bsd_data *drv = priv;
907
908 return get80211var(drv, IEEE80211_IOC_BSSID,
909 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
910}
911
912#if 0
913static int
914wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
915{
916 struct wpa_driver_bsd_data *drv = priv;
917
918 return set80211var(drv, IEEE80211_IOC_BSSID,
919 bssid, IEEE80211_ADDR_LEN);
920}
921#endif
922
923static int
924wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
925{
926 struct wpa_driver_bsd_data *drv = priv;
927
928 return get80211var(drv, IEEE80211_IOC_SSID,
929 ssid, IEEE80211_NWID_LEN);
930}
931
932static int
4df91b3f 933wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
6fc6879b
JM		 934 size_t ssid_len)
935{
936 struct wpa_driver_bsd_data *drv = priv;
937
938 return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
939}
940
941static int
942wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
4df91b3f 943 const u8 *wpa_ie, size_t wpa_ie_len)
6fc6879b
JM		 944{
945 return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
946}
947
948static int
949wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
950{
951 struct wpa_driver_bsd_data *drv = priv;
952 int ret = 0;
953
954 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
955 __FUNCTION__, wpa, privacy);
956
957 if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
958 ret = -1;
959 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
960 ret = -1;
961 if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
962 ret = -1;
963
964 return ret;
965}
966
967static int
968wpa_driver_bsd_set_wpa(void *priv, int enabled)
969{
970 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
971
972 return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
973}
974
975static int
976wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
977 const unsigned char *addr)
978{
979 struct ieee80211req_del_key wk;
980
981 os_memset(&wk, 0, sizeof(wk));
982 if (addr != NULL &&
983 bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
984 struct ether_addr ea;
985
986 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
987 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
988 __func__, ether_ntoa(&ea), key_idx);
989 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
990 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
991 } else {
992 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
993 wk.idk_keyix = key_idx;
994 }
995 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
996}
997
998static int
999wpa_driver_bsd_set_key(void *priv, wpa_alg alg,
1000 const unsigned char *addr, int key_idx, int set_tx,
1001 const u8 *seq, size_t seq_len,
1002 const u8 *key, size_t key_len)
1003{
1004 struct wpa_driver_bsd_data *drv = priv;
1005 struct ieee80211req_key wk;
1006 struct ether_addr ea;
1007 char *alg_name;
1008 u_int8_t cipher;
1009
1010 if (alg == WPA_ALG_NONE)
1011 return wpa_driver_bsd_del_key(drv, key_idx, addr);
1012
1013 switch (alg) {
1014 case WPA_ALG_WEP:
1015 alg_name = "WEP";
1016 cipher = IEEE80211_CIPHER_WEP;
1017 break;
1018 case WPA_ALG_TKIP:
1019 alg_name = "TKIP";
1020 cipher = IEEE80211_CIPHER_TKIP;
1021 break;
1022 case WPA_ALG_CCMP:
1023 alg_name = "CCMP";
1024 cipher = IEEE80211_CIPHER_AES_CCM;
1025 break;
1026 default:
1027 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1028 __func__, alg);
1029 return -1;
1030 }
1031
1032 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1033 wpa_printf(MSG_DEBUG,
1034 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
1035 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
1036 seq_len, key_len);
1037
1038 if (seq_len > sizeof(u_int64_t)) {
1039 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
1040 __func__, seq_len);
1041 return -2;
1042 }
1043 if (key_len > sizeof(wk.ik_keydata)) {
1044 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
1045 __func__, key_len);
1046 return -3;
1047 }
1048
1049 os_memset(&wk, 0, sizeof(wk));
1050 wk.ik_type = cipher;
1051 wk.ik_flags = IEEE80211_KEY_RECV;
1052 if (set_tx)
1053 wk.ik_flags |= IEEE80211_KEY_XMIT;
1054 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1055 /*
1056 * Deduce whether group/global or unicast key by checking
1057 * the address (yech). Note also that we can only mark global
1058 * keys default; doing this for a unicast key is an error.
1059 */
1060 if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
1061 wk.ik_flags |= IEEE80211_KEY_GROUP;
1062 wk.ik_keyix = key_idx;
1063 } else {
1064 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
1065 }
1066 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
1067 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
1068 wk.ik_keylen = key_len;
1069 os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1070 os_memcpy(wk.ik_keydata, key, key_len);
1071
1072 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
1073}
1074
1075static int
1076wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1077{
1078 struct wpa_driver_bsd_data *drv = priv;
1079
1080 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1081 return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1082}
1083
1084
1085static int
1086wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1087{
1088 struct wpa_driver_bsd_data *drv = priv;
1089
1090 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1091 return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1092}
1093
1094static int
1095wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1096{
1097 struct wpa_driver_bsd_data *drv = priv;
1098 struct ieee80211req_mlme mlme;
1099
1100 wpa_printf(MSG_DEBUG, "%s", __func__);
1101 os_memset(&mlme, 0, sizeof(mlme));
1102 mlme.im_op = IEEE80211_MLME_DEAUTH;
1103 mlme.im_reason = reason_code;
1104 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1105 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1106}
1107
1108static int
1109wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
1110{
1111 struct wpa_driver_bsd_data *drv = priv;
1112 struct ieee80211req_mlme mlme;
1113
1114 wpa_printf(MSG_DEBUG, "%s", __func__);
1115 os_memset(&mlme, 0, sizeof(mlme));
1116 mlme.im_op = IEEE80211_MLME_DISASSOC;
1117 mlme.im_reason = reason_code;
1118 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1119 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1120}
1121
1122static int
1123wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1124{
1125 struct wpa_driver_bsd_data *drv = priv;
1126 struct ieee80211req_mlme mlme;
1127 int privacy;
1128
1129 wpa_printf(MSG_DEBUG,
1130 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1131 , __func__
1132 , params->ssid_len, params->ssid
1133 , params->wpa_ie_len
1134 , params->pairwise_suite
1135 , params->group_suite
1136 , params->key_mgmt_suite
1137 );
1138
1139 /* XXX error handling is wrong but unclear what to do... */
1140 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1141 return -1;
1142#ifndef NEW_FREEBSD_MLME_ASSOC
1143 if (wpa_driver_bsd_set_ssid(drv, params->ssid, params->ssid_len) < 0)
1144 return -1;
1145#endif
1146
1147 privacy = !(params->pairwise_suite == CIPHER_NONE &&
1148 params->group_suite == CIPHER_NONE &&
1149 params->key_mgmt_suite == KEY_MGMT_NONE &&
1150 params->wpa_ie_len == 0);
1151 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1152
1153 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1154 return -1;
1155
1156 if (params->wpa_ie_len &&
1157 set80211param(drv, IEEE80211_IOC_WPA,
1158 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1159 return -1;
1160
1161 os_memset(&mlme, 0, sizeof(mlme));
1162 mlme.im_op = IEEE80211_MLME_ASSOC;
1163#ifdef NEW_FREEBSD_MLME_ASSOC
1164 if (params->ssid != NULL)
1165 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1166 mlme.im_ssid_len = params->ssid_len;
1167#endif
1168 if (params->bssid != NULL)
1169 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1170 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1171 return -1;
1172 return 0;
1173}
1174
1175static int
1176wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1177{
1178 struct wpa_driver_bsd_data *drv = priv;
1179 int authmode;
1180
1181 if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1182 (auth_alg & AUTH_ALG_SHARED_KEY))
1183 authmode = IEEE80211_AUTH_AUTO;
1184 else if (auth_alg & AUTH_ALG_SHARED_KEY)
1185 authmode = IEEE80211_AUTH_SHARED;
1186 else
1187 authmode = IEEE80211_AUTH_OPEN;
1188
1189 return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1190}
1191
1192static int
1193wpa_driver_bsd_scan(void *priv, const u8 *ssid, size_t ssid_len)
1194{
1195 struct wpa_driver_bsd_data *drv = priv;
1196 int flags;
1197
1198 /* NB: interface must be marked UP to do a scan */
1199 if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1200 return -1;
1201
1202 /* set desired ssid before scan */
1203 if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1204 return -1;
1205
1206 /* NB: net80211 delivers a scan complete event so no need to poll */
1207 return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1208}
1209
6fc6879b
JM		 1210static void
1211wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1212{
1213 struct wpa_driver_bsd_data *drv = sock_ctx;
1214 char buf[2048];
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 int n;
1221
1222 n = read(sock, buf, sizeof(buf));
1223 if (n < 0) {
1224 if (errno != EINTR && errno != EAGAIN)
1225 perror("read(PF_ROUTE)");
1226 return;
1227 }
1228
1229 rtm = (struct rt_msghdr *) buf;
1230 if (rtm->rtm_version != RTM_VERSION) {
1231 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1232 "understood\n", rtm->rtm_version);
1233 return;
1234 }
1235 os_memset(&event, 0, sizeof(event));
1236 switch (rtm->rtm_type) {
1237 case RTM_IFANNOUNCE:
1238 ifan = (struct if_announcemsghdr *) rtm;
1239 if (ifan->ifan_index != drv->ifindex)
1240 break;
1241 strlcpy(event.interface_status.ifname, drv->ifname,
1242 sizeof(event.interface_status.ifname));
1243 switch (ifan->ifan_what) {
1244 case IFAN_DEPARTURE:
1245 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1246 default:
1247 return;
1248 }
1249 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1250 event.interface_status.ifname,
1251 ifan->ifan_what == IFAN_DEPARTURE ?
1252 "removed" : "added");
1253 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1254 break;
1255 case RTM_IEEE80211:
1256 ifan = (struct if_announcemsghdr *) rtm;
1257 if (ifan->ifan_index != drv->ifindex)
1258 break;
1259 switch (ifan->ifan_what) {
1260 case RTM_IEEE80211_ASSOC:
1261 case RTM_IEEE80211_REASSOC:
1262 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1263 break;
1264 case RTM_IEEE80211_DISASSOC:
1265 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1266 break;
1267 case RTM_IEEE80211_SCAN:
1268 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1269 break;
1270 case RTM_IEEE80211_REPLAY:
1271 /* ignore */
1272 break;
1273 case RTM_IEEE80211_MICHAEL:
1274 mic = (struct ieee80211_michael_event *) &ifan[1];
1275 wpa_printf(MSG_DEBUG,
1276 "Michael MIC failure wireless event: "
1277 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1278 MAC2STR(mic->iev_src));
1279
1280 os_memset(&event, 0, sizeof(event));
1281 event.michael_mic_failure.unicast =
1282 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1283 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1284 &event);
1285 break;
1286 }
1287 break;
1288 case RTM_IFINFO:
1289 ifm = (struct if_msghdr *) rtm;
1290 if (ifm->ifm_index != drv->ifindex)
1291 break;
1292 if ((rtm->rtm_flags & RTF_UP) == 0) {
1293 strlcpy(event.interface_status.ifname, drv->ifname,
1294 sizeof(event.interface_status.ifname));
1295 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1296 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1297 event.interface_status.ifname);
1298 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1299 }
1300 break;
1301 }
1302}
1303
1304/* Compare function for sorting scan results. Return >0 if @b is consider
1305 * better. */
1306static int
1307wpa_scan_result_compar(const void *a, const void *b)
1308{
1309 const struct wpa_scan_result *wa = a;
1310 const struct wpa_scan_result *wb = b;
1311
1312 /* WPA/WPA2 support preferred */
1313 if ((wb->wpa_ie_len || wb->rsn_ie_len) &&
1314 !(wa->wpa_ie_len || wa->rsn_ie_len))
1315 return 1;
1316 if (!(wb->wpa_ie_len || wb->rsn_ie_len) &&
1317 (wa->wpa_ie_len || wa->rsn_ie_len))
1318 return -1;
1319
1320 /* privacy support preferred */
1321 if ((wa->caps & IEEE80211_CAPINFO_PRIVACY) &&
1322 (wb->caps & IEEE80211_CAPINFO_PRIVACY) == 0)
1323 return 1;
1324 if ((wa->caps & IEEE80211_CAPINFO_PRIVACY) == 0 &&
1325 (wb->caps & IEEE80211_CAPINFO_PRIVACY))
1326 return -1;
1327
1328 /* best/max rate preferred if signal level close enough XXX */
1329 if (wa->maxrate != wb->maxrate && abs(wb->level - wa->level) < 5)
1330 return wb->maxrate - wa->maxrate;
1331
1332 /* use freq for channel preference */
1333
1334 /* all things being equal, use signal level */
1335 return wb->level - wa->level;
1336}
1337
1338static int
1339getmaxrate(uint8_t rates[15], uint8_t nrates)
1340{
1341 int i, maxrate = -1;
1342
1343 for (i = 0; i < nrates; i++) {
1344 int rate = rates[i] & IEEE80211_RATE_VAL;
1345 if (rate > maxrate)
1346 rate = maxrate;
1347 }
1348 return maxrate;
1349}
1350
1351/* unalligned little endian access */
1352#define LE_READ_4(p) \
1353 ((u_int32_t) \
1354 ((((const u_int8_t *)(p))[0] ) | \
1355 (((const u_int8_t *)(p))[1] << 8) | \
1356 (((const u_int8_t *)(p))[2] << 16) | \
1357 (((const u_int8_t *)(p))[3] << 24)))
1358
1359static int __inline
1360iswpaoui(const u_int8_t *frm)
1361{
1362 return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI);
1363}
1364
1365static int
1366wpa_driver_bsd_get_scan_results(void *priv,
1367 struct wpa_scan_result *results,
1368 size_t max_size)
1369{
1370#define min(a,b) ((a)>(b)?(b):(a))
1371 struct wpa_driver_bsd_data *drv = priv;
1372 uint8_t buf[24*1024];
1373 uint8_t *cp, *vp;
1374 struct ieee80211req_scan_result *sr;
1375 struct wpa_scan_result *wsr;
1376 int len, ielen;
1377
1378 os_memset(results, 0, max_size * sizeof(struct wpa_scan_result));
1379
1380 len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, sizeof(buf));
1381 if (len < 0)
1382 return -1;
1383 cp = buf;
1384 wsr = results;
1385 while (len >= sizeof(struct ieee80211req_scan_result)) {
1386 sr = (struct ieee80211req_scan_result *) cp;
1387 os_memcpy(wsr->bssid, sr->isr_bssid, IEEE80211_ADDR_LEN);
1388 wsr->ssid_len = sr->isr_ssid_len;
1389 wsr->freq = sr->isr_freq;
1390 wsr->noise = sr->isr_noise;
1391 wsr->qual = sr->isr_rssi;
1392 wsr->level = 0; /* XXX? */
1393 wsr->caps = sr->isr_capinfo;
1394 wsr->maxrate = getmaxrate(sr->isr_rates, sr->isr_nrates);
1395 vp = (u_int8_t *)(sr+1);
1396 os_memcpy(wsr->ssid, vp, sr->isr_ssid_len);
1397 if (sr->isr_ie_len > 0) {
1398 vp += sr->isr_ssid_len;
1399 ielen = sr->isr_ie_len;
1400 while (ielen > 0) {
1401 switch (vp[0]) {
1402 case IEEE80211_ELEMID_VENDOR:
1403 if (!iswpaoui(vp))
1404 break;
1405 wsr->wpa_ie_len =
1406 min(2+vp[1], SSID_MAX_WPA_IE_LEN);
1407 os_memcpy(wsr->wpa_ie, vp,
1408 wsr->wpa_ie_len);
1409 break;
1410 case IEEE80211_ELEMID_RSN:
1411 wsr->rsn_ie_len =
1412 min(2+vp[1], SSID_MAX_WPA_IE_LEN);
1413 os_memcpy(wsr->rsn_ie, vp,
1414 wsr->rsn_ie_len);
1415 break;
1416 }
1417 ielen -= 2+vp[1];
1418 vp += 2+vp[1];
1419 }
1420 }
1421
1422 cp += sr->isr_len, len -= sr->isr_len;
1423 wsr++;
1424 }
1425 qsort(results, wsr - results, sizeof(struct wpa_scan_result),
1426 wpa_scan_result_compar);
1427
1428 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%d BSSes)",
1429 len, wsr - results);
1430
1431 return wsr - results;
1432#undef min
1433}
1434
1435static void *
1436wpa_driver_bsd_init(void *ctx, const char *ifname)
1437{
1438#define GETPARAM(drv, param, v) \
1439 (((v) = get80211param(drv, param)) != -1)
1440 struct wpa_driver_bsd_data *drv;
1441
1442 drv = os_zalloc(sizeof(*drv));
1443 if (drv == NULL)
1444 return NULL;
1445 /*
1446 * NB: We require the interface name be mappable to an index.
1447 * This implies we do not support having wpa_supplicant
1448 * wait for an interface to appear. This seems ok; that
1449 * doesn't belong here; it's really the job of devd.
1450 */
1451 drv->ifindex = if_nametoindex(ifname);
1452 if (drv->ifindex == 0) {
1453 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1454 __func__, ifname);
1455 goto fail1;
1456 }
1457 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1458 if (drv->sock < 0)
1459 goto fail1;
1460 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1461 if (drv->route < 0)
1462 goto fail;
1463 eloop_register_read_sock(drv->route,
1464 wpa_driver_bsd_event_receive, ctx, drv);
1465
1466 drv->ctx = ctx;
1467 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1468
1469 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1470 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1471 __func__, strerror(errno));
1472 goto fail;
1473 }
1474 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1475 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1476 __func__, strerror(errno));
1477 goto fail;
1478 }
1479 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1480 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1481 __func__, strerror(errno));
1482 goto fail;
1483 }
1484 if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1485 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1486 "roaming: %s", __func__, strerror(errno));
1487 goto fail;
1488 }
1489
1490 if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1491 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1492 __func__, strerror(errno));
1493 goto fail;
1494 }
1495
1496 return drv;
1497fail:
1498 close(drv->sock);
1499fail1:
1500 os_free(drv);
1501 return NULL;
1502#undef GETPARAM
1503}
1504
1505static void
1506wpa_driver_bsd_deinit(void *priv)
1507{
1508 struct wpa_driver_bsd_data *drv = priv;
1509 int flags;
1510
1511 eloop_unregister_read_sock(drv->route);
1512
1513 /* NB: mark interface down */
1514 if (getifflags(drv, &flags) == 0)
1515 (void) setifflags(drv, flags &~ IFF_UP);
1516
1517 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1518 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1519 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1520 __func__);
1521
1522 (void) close(drv->route); /* ioctl socket */
1523 (void) close(drv->sock); /* event socket */
1524 os_free(drv);
1525}
1526
1527
1528const struct wpa_driver_ops wpa_driver_bsd_ops = {
1529 .name = "bsd",
1530 .desc = "BSD 802.11 support (Atheros, etc.)",
1531 .init = wpa_driver_bsd_init,
1532 .deinit = wpa_driver_bsd_deinit,
1533 .get_bssid = wpa_driver_bsd_get_bssid,
1534 .get_ssid = wpa_driver_bsd_get_ssid,
1535 .set_wpa = wpa_driver_bsd_set_wpa,
1536 .set_key = wpa_driver_bsd_set_key,
1537 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
1538 .set_drop_unencrypted = wpa_driver_bsd_set_drop_unencrypted,
1539 .scan = wpa_driver_bsd_scan,
1540 .get_scan_results = wpa_driver_bsd_get_scan_results,
1541 .deauthenticate = wpa_driver_bsd_deauthenticate,
1542 .disassociate = wpa_driver_bsd_disassociate,
1543 .associate = wpa_driver_bsd_associate,
1544 .set_auth_alg = wpa_driver_bsd_set_auth_alg,
1545};
c5121837
JM		 1546
1547#endif /* HOSTAPD */
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