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Remove deprecated driver_ops handlers
[thirdparty/hostap.git] / src / drivers / driver_bsd.c
1 /*
2 * WPA Supplicant - driver interaction with BSD net80211 layer
3 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
4 * Copyright (c) 2004, 2Wire, Inc
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Alternatively, this software may be distributed under the terms of BSD
11 * license.
12 *
13 * See README and COPYING for more details.
14 */
15
16 #include "includes.h"
17 #include <sys/ioctl.h>
18
19 #include "common.h"
20 #include "driver.h"
21 #include "eloop.h"
22 #include "ieee802_11_defs.h"
23
24 #include <net/if.h>
25
26 #ifdef __NetBSD__
27 #include <net/if_ether.h>
28 #else
29 #include <net/ethernet.h>
30 #endif
31 #include <net/route.h>
32
33 #ifdef __DragonFly__
34 #include <netproto/802_11/ieee80211_ioctl.h>
35 #include <netproto/802_11/ieee80211_dragonfly.h>
36 #else /* __DragonFly__ */
37 #include <net80211/ieee80211.h>
38 #include <net80211/ieee80211_crypto.h>
39 #include <net80211/ieee80211_ioctl.h>
40 #endif /* __DragonFly__ */
41 #if __FreeBSD__
42 #include <net80211/ieee80211_freebsd.h>
43 #endif
44 #if __NetBSD__
45 #include <net80211/ieee80211_netbsd.h>
46 #endif
47
48 /* Generic functions for hostapd and wpa_supplicant */
49
50 static int
51 bsd_set80211var(int s, const char *ifname, int op, const void *arg, int arg_len)
52 {
53 struct ieee80211req ireq;
54
55 os_memset(&ireq, 0, sizeof(ireq));
56 os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
57 ireq.i_type = op;
58 ireq.i_len = arg_len;
59 ireq.i_data = (void *) arg;
60
61 if (ioctl(s, SIOCS80211, &ireq) < 0) {
62 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
63 op, arg_len, strerror(errno));
64 return -1;
65 }
66 return 0;
67 }
68
69 static int
70 bsd_get80211var(int s, const char *ifname, int op, void *arg, int arg_len)
71 {
72 struct ieee80211req ireq;
73
74 os_memset(&ireq, 0, sizeof(ireq));
75 os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
76 ireq.i_type = op;
77 ireq.i_len = arg_len;
78 ireq.i_data = arg;
79
80 if (ioctl(s, SIOCG80211, &ireq) < 0) {
81 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
82 op, arg_len, strerror(errno));
83 return -1;
84 }
85 return ireq.i_len;
86 }
87
88 static int
89 bsd_set80211param(int s, const char *ifname, int op, int arg)
90 {
91 struct ieee80211req ireq;
92
93 os_memset(&ireq, 0, sizeof(ireq));
94 os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
95 ireq.i_type = op;
96 ireq.i_val = arg;
97
98 if (ioctl(s, SIOCS80211, &ireq) < 0) {
99 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
100 op, arg, strerror(errno));
101 return -1;
102 }
103 return 0;
104 }
105
106 static int
107 bsd_get_ssid(int s, const char *ifname, u8 *ssid)
108 {
109 #ifdef SIOCG80211NWID
110 struct ieee80211_nwid nwid;
111 struct ifreq ifr;
112
113 os_memset(&ifr, 0, sizeof(ifr));
114 os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
115 ifr.ifr_data = (void *)&nwid;
116 if (ioctl(s, SIOCG80211NWID, &ifr) < 0 ||
117 nwid.i_len > IEEE80211_NWID_LEN)
118 return -1;
119 os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
120 return nwid.i_len;
121 #else
122 return bsd_get80211var(s, ifname, IEEE80211_IOC_SSID,
123 ssid, IEEE80211_NWID_LEN);
124 #endif
125 }
126
127 static int
128 bsd_set_ssid(int s, const char *ifname, const u8 *ssid, size_t ssid_len)
129 {
130 #ifdef SIOCS80211NWID
131 struct ieee80211_nwid nwid;
132 struct ifreq ifr;
133
134 os_memcpy(nwid.i_nwid, ssid, ssid_len);
135 nwid.i_len = ssid_len;
136 os_memset(&ifr, 0, sizeof(ifr));
137 os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
138 ifr.ifr_data = (void *)&nwid;
139 return ioctl(s, SIOCS80211NWID, &ifr);
140 #else
141 return bsd_set80211var(s, ifname, IEEE80211_IOC_SSID, ssid, ssid_len);
142 #endif
143 }
144
145
146 #ifdef HOSTAPD
147
148 /*
149 * Avoid conflicts with hostapd definitions by undefining couple of defines
150 * from net80211 header files.
151 */
152 #undef RSN_VERSION
153 #undef WPA_VERSION
154 #undef WPA_OUI_TYPE
155
156 #include "l2_packet/l2_packet.h"
157 #include "../../hostapd/hostapd.h"
158 #include "../../hostapd/config.h"
159 #include "../../hostapd/eapol_sm.h"
160 #include "../../hostapd/sta_flags.h"
161
162 struct bsd_driver_data {
163 struct hostapd_data *hapd; /* back pointer */
164
165 char iface[IFNAMSIZ + 1];
166 struct l2_packet_data *sock_xmit; /* raw packet xmit socket */
167 int ioctl_sock; /* socket for ioctl() use */
168 int wext_sock; /* socket for wireless events */
169 };
170
171 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
172 int reason_code);
173
174 static int
175 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
176 {
177 return bsd_set80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
178 }
179
180 static int
181 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
182 {
183 return bsd_get80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
184 }
185
186 static int
187 set80211param(struct bsd_driver_data *drv, int op, int arg)
188 {
189 return bsd_set80211param(drv->ioctl_sock, drv->iface, op, arg);
190 }
191
192 static const char *
193 ether_sprintf(const u8 *addr)
194 {
195 static char buf[sizeof(MACSTR)];
196
197 if (addr != NULL)
198 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
199 else
200 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
201 return buf;
202 }
203
204 /*
205 * Configure WPA parameters.
206 */
207 static int
208 bsd_configure_wpa(struct bsd_driver_data *drv)
209 {
210 static const char *ciphernames[] =
211 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
212 struct hostapd_data *hapd = drv->hapd;
213 struct hostapd_bss_config *conf = hapd->conf;
214 int v;
215
216 switch (conf->wpa_group) {
217 case WPA_CIPHER_CCMP:
218 v = IEEE80211_CIPHER_AES_CCM;
219 break;
220 case WPA_CIPHER_TKIP:
221 v = IEEE80211_CIPHER_TKIP;
222 break;
223 case WPA_CIPHER_WEP104:
224 v = IEEE80211_CIPHER_WEP;
225 break;
226 case WPA_CIPHER_WEP40:
227 v = IEEE80211_CIPHER_WEP;
228 break;
229 case WPA_CIPHER_NONE:
230 v = IEEE80211_CIPHER_NONE;
231 break;
232 default:
233 printf("Unknown group key cipher %u\n",
234 conf->wpa_group);
235 return -1;
236 }
237 wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
238 __func__, ciphernames[v], v);
239 if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
240 printf("Unable to set group key cipher to %u (%s)\n",
241 v, ciphernames[v]);
242 return -1;
243 }
244 if (v == IEEE80211_CIPHER_WEP) {
245 /* key length is done only for specific ciphers */
246 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
247 if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
248 printf("Unable to set group key length to %u\n", v);
249 return -1;
250 }
251 }
252
253 v = 0;
254 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
255 v |= 1<<IEEE80211_CIPHER_AES_CCM;
256 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
257 v |= 1<<IEEE80211_CIPHER_TKIP;
258 if (conf->wpa_pairwise & WPA_CIPHER_NONE)
259 v |= 1<<IEEE80211_CIPHER_NONE;
260 wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
261 if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
262 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
263 return -1;
264 }
265
266 wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
267 __func__, conf->wpa_key_mgmt);
268 if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, conf->wpa_key_mgmt)) {
269 printf("Unable to set key management algorithms to 0x%x\n",
270 conf->wpa_key_mgmt);
271 return -1;
272 }
273
274 v = 0;
275 if (conf->rsn_preauth)
276 v |= BIT(0);
277 wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
278 __func__, conf->rsn_preauth);
279 if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
280 printf("Unable to set RSN capabilities to 0x%x\n", v);
281 return -1;
282 }
283
284 wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, conf->wpa);
285 if (set80211param(drv, IEEE80211_IOC_WPA, conf->wpa)) {
286 printf("Unable to set WPA to %u\n", conf->wpa);
287 return -1;
288 }
289 return 0;
290 }
291
292
293 static int
294 bsd_set_iface_flags(void *priv, int dev_up)
295 {
296 struct bsd_driver_data *drv = priv;
297 struct ifreq ifr;
298
299 wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
300
301 if (drv->ioctl_sock < 0)
302 return -1;
303
304 memset(&ifr, 0, sizeof(ifr));
305 os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
306
307 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
308 perror("ioctl[SIOCGIFFLAGS]");
309 return -1;
310 }
311
312 if (dev_up)
313 ifr.ifr_flags |= IFF_UP;
314 else
315 ifr.ifr_flags &= ~IFF_UP;
316
317 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
318 perror("ioctl[SIOCSIFFLAGS]");
319 return -1;
320 }
321
322 return 0;
323 }
324
325 static int
326 bsd_set_ieee8021x(const char *ifname, void *priv, int enabled)
327 {
328 struct bsd_driver_data *drv = priv;
329 struct hostapd_data *hapd = drv->hapd;
330 struct hostapd_bss_config *conf = hapd->conf;
331
332 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
333
334 if (!enabled) {
335 /* XXX restore state */
336 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
337 IEEE80211_AUTH_AUTO);
338 }
339 if (!conf->wpa && !conf->ieee802_1x) {
340 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
341 HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
342 return -1;
343 }
344 if (conf->wpa && bsd_configure_wpa(drv) != 0) {
345 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
346 HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
347 return -1;
348 }
349 if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
350 (conf->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
351 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
352 HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
353 return -1;
354 }
355 return bsd_set_iface_flags(priv, 1);
356 }
357
358 static int
359 bsd_set_privacy(const char *ifname, void *priv, int enabled)
360 {
361 struct bsd_driver_data *drv = priv;
362
363 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
364
365 return set80211param(drv, IEEE80211_IOC_PRIVACY, enabled);
366 }
367
368 static int
369 bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
370 {
371 struct bsd_driver_data *drv = priv;
372 struct ieee80211req_mlme mlme;
373
374 wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
375 __func__, ether_sprintf(addr), authorized);
376
377 if (authorized)
378 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
379 else
380 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
381 mlme.im_reason = 0;
382 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
383 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
384 }
385
386 static int
387 bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
388 int flags_and)
389 {
390 /* For now, only support setting Authorized flag */
391 if (flags_or & WLAN_STA_AUTHORIZED)
392 return bsd_set_sta_authorized(priv, addr, 1);
393 if (!(flags_and & WLAN_STA_AUTHORIZED))
394 return bsd_set_sta_authorized(priv, addr, 0);
395 return 0;
396 }
397
398 static int
399 bsd_del_key(void *priv, const u8 *addr, int key_idx)
400 {
401 struct bsd_driver_data *drv = priv;
402 struct ieee80211req_del_key wk;
403
404 wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
405 __func__, ether_sprintf(addr), key_idx);
406
407 memset(&wk, 0, sizeof(wk));
408 if (addr != NULL) {
409 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
410 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
411 } else {
412 wk.idk_keyix = key_idx;
413 }
414
415 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
416 }
417
418 static int
419 bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
420 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
421 size_t seq_len, const u8 *key, size_t key_len)
422 {
423 struct bsd_driver_data *drv = priv;
424 struct ieee80211req_key wk;
425 u_int8_t cipher;
426
427 if (alg == WPA_ALG_NONE)
428 return bsd_del_key(drv, addr, key_idx);
429
430 wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
431 __func__, alg, ether_sprintf(addr), key_idx);
432
433 if (alg == WPA_ALG_WEP)
434 cipher = IEEE80211_CIPHER_WEP;
435 else if (alg == WPA_ALG_TKIP)
436 cipher = IEEE80211_CIPHER_TKIP;
437 else if (alg == WPA_ALG_CCMP)
438 cipher = IEEE80211_CIPHER_AES_CCM;
439 else {
440 printf("%s: unknown/unsupported algorithm %d\n",
441 __func__, alg);
442 return -1;
443 }
444
445 if (key_len > sizeof(wk.ik_keydata)) {
446 printf("%s: key length %d too big\n", __func__, (int) key_len);
447 return -3;
448 }
449
450 memset(&wk, 0, sizeof(wk));
451 wk.ik_type = cipher;
452 wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
453 if (addr == NULL) {
454 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
455 wk.ik_keyix = key_idx;
456 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
457 } else {
458 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
459 wk.ik_keyix = IEEE80211_KEYIX_NONE;
460 }
461 wk.ik_keylen = key_len;
462 memcpy(wk.ik_keydata, key, key_len);
463
464 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
465 }
466
467
468 static int
469 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
470 u8 *seq)
471 {
472 struct bsd_driver_data *drv = priv;
473 struct ieee80211req_key wk;
474
475 wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
476 __func__, ether_sprintf(addr), idx);
477
478 memset(&wk, 0, sizeof(wk));
479 if (addr == NULL)
480 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
481 else
482 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
483 wk.ik_keyix = idx;
484
485 if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
486 printf("Failed to get encryption.\n");
487 return -1;
488 }
489
490 #ifdef WORDS_BIGENDIAN
491 {
492 /*
493 * wk.ik_keytsc is in host byte order (big endian), need to
494 * swap it to match with the byte order used in WPA.
495 */
496 int i;
497 u8 tmp[WPA_KEY_RSC_LEN];
498 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
499 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
500 seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
501 }
502 }
503 #else /* WORDS_BIGENDIAN */
504 memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
505 #endif /* WORDS_BIGENDIAN */
506 return 0;
507 }
508
509
510 static int
511 bsd_flush(void *priv)
512 {
513 u8 allsta[IEEE80211_ADDR_LEN];
514
515 memset(allsta, 0xff, IEEE80211_ADDR_LEN);
516 return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
517 }
518
519
520 static int
521 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
522 const u8 *addr)
523 {
524 struct bsd_driver_data *drv = priv;
525 struct ieee80211req_sta_stats stats;
526
527 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
528 if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
529 /* XXX? do packets counts include non-data frames? */
530 data->rx_packets = stats.is_stats.ns_rx_data;
531 data->rx_bytes = stats.is_stats.ns_rx_bytes;
532 data->tx_packets = stats.is_stats.ns_tx_data;
533 data->tx_bytes = stats.is_stats.ns_tx_bytes;
534 }
535 return 0;
536 }
537
538 static int
539 bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
540 {
541 /*
542 * Do nothing; we setup parameters at startup that define the
543 * contents of the beacon information element.
544 */
545 return 0;
546 }
547
548 static int
549 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
550 {
551 struct bsd_driver_data *drv = priv;
552 struct ieee80211req_mlme mlme;
553
554 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
555 __func__, ether_sprintf(addr), reason_code);
556
557 mlme.im_op = IEEE80211_MLME_DEAUTH;
558 mlme.im_reason = reason_code;
559 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
560 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
561 }
562
563 static int
564 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
565 int reason_code)
566 {
567 struct bsd_driver_data *drv = priv;
568 struct ieee80211req_mlme mlme;
569
570 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
571 __func__, ether_sprintf(addr), reason_code);
572
573 mlme.im_op = IEEE80211_MLME_DISASSOC;
574 mlme.im_reason = reason_code;
575 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
576 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
577 }
578
579 static int
580 bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
581 {
582 struct hostapd_data *hapd = drv->hapd;
583 struct ieee80211req_wpaie ie;
584 int ielen = 0;
585 u8 *iebuf = NULL;
586
587 /*
588 * Fetch and validate any negotiated WPA/RSN parameters.
589 */
590 memset(&ie, 0, sizeof(ie));
591 memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
592 if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
593 printf("Failed to get WPA/RSN information element.\n");
594 goto no_ie;
595 }
596 iebuf = ie.wpa_ie;
597 ielen = ie.wpa_ie[1];
598 if (ielen == 0)
599 iebuf = NULL;
600 else
601 ielen += 2;
602
603 no_ie:
604 return hostapd_notif_assoc(hapd, addr, iebuf, ielen);
605 }
606
607 static void
608 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
609 {
610 struct bsd_driver_data *drv = ctx;
611 struct hostapd_data *hapd = drv->hapd;
612 char buf[2048];
613 struct if_announcemsghdr *ifan;
614 struct rt_msghdr *rtm;
615 struct ieee80211_michael_event *mic;
616 struct ieee80211_join_event *join;
617 struct ieee80211_leave_event *leave;
618 int n;
619
620 n = read(sock, buf, sizeof(buf));
621 if (n < 0) {
622 if (errno != EINTR && errno != EAGAIN)
623 perror("read(PF_ROUTE)");
624 return;
625 }
626
627 rtm = (struct rt_msghdr *) buf;
628 if (rtm->rtm_version != RTM_VERSION) {
629 wpa_printf(MSG_DEBUG, "Routing message version %d not "
630 "understood\n", rtm->rtm_version);
631 return;
632 }
633 ifan = (struct if_announcemsghdr *) rtm;
634 switch (rtm->rtm_type) {
635 case RTM_IEEE80211:
636 switch (ifan->ifan_what) {
637 case RTM_IEEE80211_ASSOC:
638 case RTM_IEEE80211_REASSOC:
639 case RTM_IEEE80211_DISASSOC:
640 case RTM_IEEE80211_SCAN:
641 break;
642 case RTM_IEEE80211_LEAVE:
643 leave = (struct ieee80211_leave_event *) &ifan[1];
644 hostapd_notif_disassoc(drv->hapd, leave->iev_addr);
645 break;
646 case RTM_IEEE80211_JOIN:
647 #ifdef RTM_IEEE80211_REJOIN
648 case RTM_IEEE80211_REJOIN:
649 #endif
650 join = (struct ieee80211_join_event *) &ifan[1];
651 bsd_new_sta(drv, join->iev_addr);
652 break;
653 case RTM_IEEE80211_REPLAY:
654 /* ignore */
655 break;
656 case RTM_IEEE80211_MICHAEL:
657 mic = (struct ieee80211_michael_event *) &ifan[1];
658 wpa_printf(MSG_DEBUG,
659 "Michael MIC failure wireless event: "
660 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
661 MAC2STR(mic->iev_src));
662 hostapd_michael_mic_failure(hapd, mic->iev_src);
663 break;
664 }
665 break;
666 }
667 }
668
669 static int
670 bsd_wireless_event_init(struct bsd_driver_data *drv)
671 {
672 int s;
673
674 drv->wext_sock = -1;
675
676 s = socket(PF_ROUTE, SOCK_RAW, 0);
677 if (s < 0) {
678 perror("socket(PF_ROUTE,SOCK_RAW)");
679 return -1;
680 }
681 eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
682 drv->wext_sock = s;
683
684 return 0;
685 }
686
687 static void
688 bsd_wireless_event_deinit(struct bsd_driver_data *drv)
689 {
690 if (drv->wext_sock < 0)
691 return;
692 eloop_unregister_read_sock(drv->wext_sock);
693 close(drv->wext_sock);
694 }
695
696
697 static int
698 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
699 int encrypt, const u8 *own_addr)
700 {
701 struct bsd_driver_data *drv = priv;
702 unsigned char buf[3000];
703 unsigned char *bp = buf;
704 struct l2_ethhdr *eth;
705 size_t len;
706 int status;
707
708 /*
709 * Prepend the Etherent header. If the caller left us
710 * space at the front we could just insert it but since
711 * we don't know we copy to a local buffer. Given the frequency
712 * and size of frames this probably doesn't matter.
713 */
714 len = data_len + sizeof(struct l2_ethhdr);
715 if (len > sizeof(buf)) {
716 bp = malloc(len);
717 if (bp == NULL) {
718 printf("EAPOL frame discarded, cannot malloc temp "
719 "buffer of size %u!\n", (unsigned int) len);
720 return -1;
721 }
722 }
723 eth = (struct l2_ethhdr *) bp;
724 memcpy(eth->h_dest, addr, ETH_ALEN);
725 memcpy(eth->h_source, own_addr, ETH_ALEN);
726 eth->h_proto = htons(ETH_P_EAPOL);
727 memcpy(eth+1, data, data_len);
728
729 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
730
731 status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
732
733 if (bp != buf)
734 free(bp);
735 return status;
736 }
737
738 static void
739 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
740 {
741 struct bsd_driver_data *drv = ctx;
742 hostapd_eapol_receive(drv->hapd, src_addr,
743 buf + sizeof(struct l2_ethhdr),
744 len - sizeof(struct l2_ethhdr));
745 }
746
747 static int
748 hostapd_bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
749 {
750 struct bsd_driver_data *drv = priv;
751 int ssid_len;
752
753 ssid_len = bsd_get_ssid(drv->ioctl_sock, drv->iface, buf);
754 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
755
756 return ssid_len;
757 }
758
759 static int
760 hostapd_bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
761 {
762 struct bsd_driver_data *drv = priv;
763
764 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
765
766 return bsd_set_ssid(drv->ioctl_sock, drv->iface, buf, len);
767 }
768
769 static void *
770 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
771 {
772 struct bsd_driver_data *drv;
773
774 drv = os_zalloc(sizeof(struct bsd_driver_data));
775 if (drv == NULL) {
776 printf("Could not allocate memory for bsd driver data\n");
777 goto bad;
778 }
779
780 drv->hapd = hapd;
781 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
782 if (drv->ioctl_sock < 0) {
783 perror("socket[PF_INET,SOCK_DGRAM]");
784 goto bad;
785 }
786 memcpy(drv->iface, params->ifname, sizeof(drv->iface));
787
788 drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
789 handle_read, drv, 1);
790 if (drv->sock_xmit == NULL)
791 goto bad;
792 if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
793 goto bad;
794
795 bsd_set_iface_flags(drv, 0); /* mark down during setup */
796 if (bsd_wireless_event_init(drv))
797 goto bad;
798
799 return drv;
800 bad:
801 if (drv->sock_xmit != NULL)
802 l2_packet_deinit(drv->sock_xmit);
803 if (drv->ioctl_sock >= 0)
804 close(drv->ioctl_sock);
805 if (drv != NULL)
806 free(drv);
807 return NULL;
808 }
809
810
811 static void
812 bsd_deinit(void *priv)
813 {
814 struct bsd_driver_data *drv = priv;
815
816 bsd_wireless_event_deinit(drv);
817 (void) bsd_set_iface_flags(drv, 0);
818 if (drv->ioctl_sock >= 0)
819 close(drv->ioctl_sock);
820 if (drv->sock_xmit != NULL)
821 l2_packet_deinit(drv->sock_xmit);
822 free(drv);
823 }
824
825 const struct wpa_driver_ops wpa_driver_bsd_ops = {
826 .name = "bsd",
827 .hapd_init = bsd_init,
828 .hapd_deinit = bsd_deinit,
829 .set_ieee8021x = bsd_set_ieee8021x,
830 .set_privacy = bsd_set_privacy,
831 .set_key = bsd_set_key,
832 .get_seqnum = bsd_get_seqnum,
833 .flush = bsd_flush,
834 .set_generic_elem = bsd_set_opt_ie,
835 .sta_set_flags = bsd_sta_set_flags,
836 .read_sta_data = bsd_read_sta_driver_data,
837 .hapd_send_eapol = bsd_send_eapol,
838 .sta_disassoc = bsd_sta_disassoc,
839 .sta_deauth = bsd_sta_deauth,
840 .hapd_set_ssid = hostapd_bsd_set_ssid,
841 .hapd_get_ssid = hostapd_bsd_get_ssid,
842 };
843
844 #else /* HOSTAPD */
845
846 struct wpa_driver_bsd_data {
847 int sock; /* open socket for 802.11 ioctls */
848 int route; /* routing socket for events */
849 char ifname[IFNAMSIZ+1]; /* interface name */
850 unsigned int ifindex; /* interface index */
851 void *ctx;
852 int prev_roaming; /* roaming state to restore on deinit */
853 int prev_privacy; /* privacy state to restore on deinit */
854 int prev_wpa; /* wpa state to restore on deinit */
855 };
856
857 static int
858 set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
859 {
860 return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
861 }
862
863 static int
864 get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
865 {
866 return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
867 }
868
869 static int
870 set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
871 {
872 return bsd_set80211param(drv->sock, drv->ifname, op, arg);
873 }
874
875 static int
876 get80211param(struct wpa_driver_bsd_data *drv, int op)
877 {
878 struct ieee80211req ireq;
879
880 os_memset(&ireq, 0, sizeof(ireq));
881 os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
882 ireq.i_type = op;
883
884 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
885 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
886 op, strerror(errno));
887 return -1;
888 }
889 return ireq.i_val;
890 }
891
892 static int
893 getifflags(struct wpa_driver_bsd_data *drv, int *flags)
894 {
895 struct ifreq ifr;
896
897 os_memset(&ifr, 0, sizeof(ifr));
898 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
899 if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
900 perror("SIOCGIFFLAGS");
901 return errno;
902 }
903 *flags = ifr.ifr_flags & 0xffff;
904 return 0;
905 }
906
907 static int
908 setifflags(struct wpa_driver_bsd_data *drv, int flags)
909 {
910 struct ifreq ifr;
911
912 os_memset(&ifr, 0, sizeof(ifr));
913 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
914 ifr.ifr_flags = flags & 0xffff;
915 if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
916 perror("SIOCSIFFLAGS");
917 return errno;
918 }
919 return 0;
920 }
921
922 static int
923 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
924 {
925 struct wpa_driver_bsd_data *drv = priv;
926 #ifdef SIOCG80211BSSID
927 struct ieee80211_bssid bs;
928
929 os_strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
930 if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
931 return -1;
932 os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
933 return 0;
934 #else
935 return get80211var(drv, IEEE80211_IOC_BSSID,
936 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
937 #endif
938 }
939
940 #if 0
941 static int
942 wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
943 {
944 struct wpa_driver_bsd_data *drv = priv;
945
946 return set80211var(drv, IEEE80211_IOC_BSSID,
947 bssid, IEEE80211_ADDR_LEN);
948 }
949 #endif
950
951 static int
952 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
953 {
954 struct wpa_driver_bsd_data *drv = priv;
955
956 return bsd_get_ssid(drv->sock, drv->ifname, ssid);
957 }
958
959 static int
960 wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
961 size_t ssid_len)
962 {
963 struct wpa_driver_bsd_data *drv = priv;
964
965 return bsd_set_ssid(drv->sock, drv->ifname, ssid, ssid_len);
966 }
967
968 static int
969 wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
970 const u8 *wpa_ie, size_t wpa_ie_len)
971 {
972 return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
973 }
974
975 static int
976 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
977 {
978 struct wpa_driver_bsd_data *drv = priv;
979 int ret = 0;
980
981 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
982 __FUNCTION__, wpa, privacy);
983
984 if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
985 ret = -1;
986 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
987 ret = -1;
988 if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
989 ret = -1;
990
991 return ret;
992 }
993
994 static int
995 wpa_driver_bsd_set_wpa(void *priv, int enabled)
996 {
997 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
998
999 return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
1000 }
1001
1002 static int
1003 wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
1004 const unsigned char *addr)
1005 {
1006 struct ieee80211req_del_key wk;
1007
1008 os_memset(&wk, 0, sizeof(wk));
1009 if (addr != NULL &&
1010 bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
1011 struct ether_addr ea;
1012
1013 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1014 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
1015 __func__, ether_ntoa(&ea), key_idx);
1016 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1017 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
1018 } else {
1019 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
1020 wk.idk_keyix = key_idx;
1021 }
1022 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
1023 }
1024
1025 static int
1026 wpa_driver_bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
1027 const unsigned char *addr, int key_idx, int set_tx,
1028 const u8 *seq, size_t seq_len,
1029 const u8 *key, size_t key_len)
1030 {
1031 struct wpa_driver_bsd_data *drv = priv;
1032 struct ieee80211req_key wk;
1033 struct ether_addr ea;
1034 char *alg_name;
1035 u_int8_t cipher;
1036
1037 if (alg == WPA_ALG_NONE)
1038 return wpa_driver_bsd_del_key(drv, key_idx, addr);
1039
1040 switch (alg) {
1041 case WPA_ALG_WEP:
1042 alg_name = "WEP";
1043 cipher = IEEE80211_CIPHER_WEP;
1044 break;
1045 case WPA_ALG_TKIP:
1046 alg_name = "TKIP";
1047 cipher = IEEE80211_CIPHER_TKIP;
1048 break;
1049 case WPA_ALG_CCMP:
1050 alg_name = "CCMP";
1051 cipher = IEEE80211_CIPHER_AES_CCM;
1052 break;
1053 default:
1054 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1055 __func__, alg);
1056 return -1;
1057 }
1058
1059 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1060 wpa_printf(MSG_DEBUG,
1061 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
1062 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
1063 seq_len, key_len);
1064
1065 if (seq_len > sizeof(u_int64_t)) {
1066 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
1067 __func__, seq_len);
1068 return -2;
1069 }
1070 if (key_len > sizeof(wk.ik_keydata)) {
1071 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
1072 __func__, key_len);
1073 return -3;
1074 }
1075
1076 os_memset(&wk, 0, sizeof(wk));
1077 wk.ik_type = cipher;
1078 wk.ik_flags = IEEE80211_KEY_RECV;
1079 if (set_tx)
1080 wk.ik_flags |= IEEE80211_KEY_XMIT;
1081 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1082 /*
1083 * Deduce whether group/global or unicast key by checking
1084 * the address (yech). Note also that we can only mark global
1085 * keys default; doing this for a unicast key is an error.
1086 */
1087 if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
1088 wk.ik_flags |= IEEE80211_KEY_GROUP;
1089 wk.ik_keyix = key_idx;
1090 } else {
1091 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
1092 }
1093 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
1094 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
1095 wk.ik_keylen = key_len;
1096 os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1097 os_memcpy(wk.ik_keydata, key, key_len);
1098
1099 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
1100 }
1101
1102 static int
1103 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1104 {
1105 struct wpa_driver_bsd_data *drv = priv;
1106
1107 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1108 return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1109 }
1110
1111
1112 static int
1113 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1114 {
1115 struct wpa_driver_bsd_data *drv = priv;
1116
1117 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1118 return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1119 }
1120
1121 static int
1122 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1123 {
1124 struct wpa_driver_bsd_data *drv = priv;
1125 struct ieee80211req_mlme mlme;
1126
1127 wpa_printf(MSG_DEBUG, "%s", __func__);
1128 os_memset(&mlme, 0, sizeof(mlme));
1129 mlme.im_op = IEEE80211_MLME_DEAUTH;
1130 mlme.im_reason = reason_code;
1131 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1132 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1133 }
1134
1135 static int
1136 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
1137 {
1138 struct wpa_driver_bsd_data *drv = priv;
1139 struct ieee80211req_mlme mlme;
1140
1141 wpa_printf(MSG_DEBUG, "%s", __func__);
1142 os_memset(&mlme, 0, sizeof(mlme));
1143 mlme.im_op = IEEE80211_MLME_DISASSOC;
1144 mlme.im_reason = reason_code;
1145 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1146 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1147 }
1148
1149 static int
1150 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1151 {
1152 struct wpa_driver_bsd_data *drv = priv;
1153 struct ieee80211req_mlme mlme;
1154 int privacy;
1155 int ret = 0;
1156
1157 wpa_printf(MSG_DEBUG,
1158 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1159 , __func__
1160 , (unsigned int) params->ssid_len, params->ssid
1161 , (unsigned int) params->wpa_ie_len
1162 , params->pairwise_suite
1163 , params->group_suite
1164 , params->key_mgmt_suite
1165 );
1166
1167 if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1168 < 0)
1169 ret = -1;
1170 if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1171 ret = -1;
1172 /* XXX error handling is wrong but unclear what to do... */
1173 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1174 return -1;
1175
1176 privacy = !(params->pairwise_suite == CIPHER_NONE &&
1177 params->group_suite == CIPHER_NONE &&
1178 params->key_mgmt_suite == KEY_MGMT_NONE &&
1179 params->wpa_ie_len == 0);
1180 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1181
1182 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1183 return -1;
1184
1185 if (params->wpa_ie_len &&
1186 set80211param(drv, IEEE80211_IOC_WPA,
1187 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1188 return -1;
1189
1190 os_memset(&mlme, 0, sizeof(mlme));
1191 mlme.im_op = IEEE80211_MLME_ASSOC;
1192 if (params->ssid != NULL)
1193 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1194 mlme.im_ssid_len = params->ssid_len;
1195 if (params->bssid != NULL)
1196 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1197 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1198 return -1;
1199 return ret;
1200 }
1201
1202 static int
1203 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1204 {
1205 struct wpa_driver_bsd_data *drv = priv;
1206 int authmode;
1207
1208 if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1209 (auth_alg & AUTH_ALG_SHARED_KEY))
1210 authmode = IEEE80211_AUTH_AUTO;
1211 else if (auth_alg & AUTH_ALG_SHARED_KEY)
1212 authmode = IEEE80211_AUTH_SHARED;
1213 else
1214 authmode = IEEE80211_AUTH_OPEN;
1215
1216 return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1217 }
1218
1219 static int
1220 wpa_driver_bsd_scan(void *priv, const u8 *ssid, size_t ssid_len)
1221 {
1222 struct wpa_driver_bsd_data *drv = priv;
1223 int flags;
1224
1225 /* NB: interface must be marked UP to do a scan */
1226 if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1227 return -1;
1228
1229 /* set desired ssid before scan */
1230 if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1231 return -1;
1232
1233 /* NB: net80211 delivers a scan complete event so no need to poll */
1234 return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1235 }
1236
1237 static void
1238 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1239 {
1240 struct wpa_driver_bsd_data *drv = sock_ctx;
1241 char buf[2048];
1242 struct if_announcemsghdr *ifan;
1243 struct if_msghdr *ifm;
1244 struct rt_msghdr *rtm;
1245 union wpa_event_data event;
1246 struct ieee80211_michael_event *mic;
1247 int n;
1248
1249 n = read(sock, buf, sizeof(buf));
1250 if (n < 0) {
1251 if (errno != EINTR && errno != EAGAIN)
1252 perror("read(PF_ROUTE)");
1253 return;
1254 }
1255
1256 rtm = (struct rt_msghdr *) buf;
1257 if (rtm->rtm_version != RTM_VERSION) {
1258 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1259 "understood\n", rtm->rtm_version);
1260 return;
1261 }
1262 os_memset(&event, 0, sizeof(event));
1263 switch (rtm->rtm_type) {
1264 case RTM_IFANNOUNCE:
1265 ifan = (struct if_announcemsghdr *) rtm;
1266 if (ifan->ifan_index != drv->ifindex)
1267 break;
1268 strlcpy(event.interface_status.ifname, drv->ifname,
1269 sizeof(event.interface_status.ifname));
1270 switch (ifan->ifan_what) {
1271 case IFAN_DEPARTURE:
1272 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1273 default:
1274 return;
1275 }
1276 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1277 event.interface_status.ifname,
1278 ifan->ifan_what == IFAN_DEPARTURE ?
1279 "removed" : "added");
1280 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1281 break;
1282 case RTM_IEEE80211:
1283 ifan = (struct if_announcemsghdr *) rtm;
1284 if (ifan->ifan_index != drv->ifindex)
1285 break;
1286 switch (ifan->ifan_what) {
1287 case RTM_IEEE80211_ASSOC:
1288 case RTM_IEEE80211_REASSOC:
1289 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1290 break;
1291 case RTM_IEEE80211_DISASSOC:
1292 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1293 break;
1294 case RTM_IEEE80211_SCAN:
1295 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1296 break;
1297 case RTM_IEEE80211_REPLAY:
1298 /* ignore */
1299 break;
1300 case RTM_IEEE80211_MICHAEL:
1301 mic = (struct ieee80211_michael_event *) &ifan[1];
1302 wpa_printf(MSG_DEBUG,
1303 "Michael MIC failure wireless event: "
1304 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1305 MAC2STR(mic->iev_src));
1306
1307 os_memset(&event, 0, sizeof(event));
1308 event.michael_mic_failure.unicast =
1309 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1310 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1311 &event);
1312 break;
1313 }
1314 break;
1315 case RTM_IFINFO:
1316 ifm = (struct if_msghdr *) rtm;
1317 if (ifm->ifm_index != drv->ifindex)
1318 break;
1319 if ((rtm->rtm_flags & RTF_UP) == 0) {
1320 strlcpy(event.interface_status.ifname, drv->ifname,
1321 sizeof(event.interface_status.ifname));
1322 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1323 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1324 event.interface_status.ifname);
1325 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1326 }
1327 break;
1328 }
1329 }
1330
1331 static void
1332 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1333 struct ieee80211req_scan_result *sr)
1334 {
1335 struct wpa_scan_res *result, **tmp;
1336 size_t extra_len;
1337 u8 *pos;
1338
1339 extra_len = 2 + sr->isr_ssid_len;
1340 extra_len += 2 + sr->isr_nrates;
1341 extra_len += 3; /* ERP IE */
1342 extra_len += sr->isr_ie_len;
1343
1344 result = os_zalloc(sizeof(*result) + extra_len);
1345 if (result == NULL)
1346 return;
1347 os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1348 result->freq = sr->isr_freq;
1349 result->beacon_int = sr->isr_intval;
1350 result->caps = sr->isr_capinfo;
1351 result->qual = sr->isr_rssi;
1352 result->noise = sr->isr_noise;
1353
1354 pos = (u8 *)(result + 1);
1355
1356 *pos++ = WLAN_EID_SSID;
1357 *pos++ = sr->isr_ssid_len;
1358 os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1359 pos += sr->isr_ssid_len;
1360
1361 /*
1362 * Deal all rates as supported rate.
1363 * Because net80211 doesn't report extended supported rate or not.
1364 */
1365 *pos++ = WLAN_EID_SUPP_RATES;
1366 *pos++ = sr->isr_nrates;
1367 os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1368 pos += sr->isr_nrates;
1369
1370 *pos++ = WLAN_EID_ERP_INFO;
1371 *pos++ = 1;
1372 *pos++ = sr->isr_erp;
1373
1374 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1375 pos += sr->isr_ie_len;
1376
1377 result->ie_len = pos - (u8 *)(result + 1);
1378
1379 tmp = os_realloc(res->res,
1380 (res->num + 1) * sizeof(struct wpa_scan_res *));
1381 if (tmp == NULL) {
1382 os_free(result);
1383 return;
1384 }
1385 tmp[res->num++] = result;
1386 res->res = tmp;
1387 }
1388
1389 struct wpa_scan_results *
1390 wpa_driver_bsd_get_scan_results2(void *priv)
1391 {
1392 struct wpa_driver_bsd_data *drv = priv;
1393 struct ieee80211req_scan_result *sr;
1394 struct wpa_scan_results *res;
1395 int len, rest;
1396 uint8_t buf[24*1024], *pos;
1397
1398 len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1399 if (len < 0)
1400 return NULL;
1401
1402 res = os_zalloc(sizeof(*res));
1403 if (res == NULL)
1404 return NULL;
1405
1406 pos = buf;
1407 rest = len;
1408 while (rest >= sizeof(struct ieee80211req_scan_result)) {
1409 sr = (struct ieee80211req_scan_result *)pos;
1410 wpa_driver_bsd_add_scan_entry(res, sr);
1411 pos += sr->isr_len;
1412 rest -= sr->isr_len;
1413 }
1414
1415 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1416 len, (unsigned long)res->num);
1417
1418 return res;
1419 }
1420
1421 static void *
1422 wpa_driver_bsd_init(void *ctx, const char *ifname)
1423 {
1424 #define GETPARAM(drv, param, v) \
1425 (((v) = get80211param(drv, param)) != -1)
1426 struct wpa_driver_bsd_data *drv;
1427
1428 drv = os_zalloc(sizeof(*drv));
1429 if (drv == NULL)
1430 return NULL;
1431 /*
1432 * NB: We require the interface name be mappable to an index.
1433 * This implies we do not support having wpa_supplicant
1434 * wait for an interface to appear. This seems ok; that
1435 * doesn't belong here; it's really the job of devd.
1436 */
1437 drv->ifindex = if_nametoindex(ifname);
1438 if (drv->ifindex == 0) {
1439 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1440 __func__, ifname);
1441 goto fail1;
1442 }
1443 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1444 if (drv->sock < 0)
1445 goto fail1;
1446 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1447 if (drv->route < 0)
1448 goto fail;
1449 eloop_register_read_sock(drv->route,
1450 wpa_driver_bsd_event_receive, ctx, drv);
1451
1452 drv->ctx = ctx;
1453 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1454
1455 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1456 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1457 __func__, strerror(errno));
1458 goto fail;
1459 }
1460 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1461 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1462 __func__, strerror(errno));
1463 goto fail;
1464 }
1465 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1466 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1467 __func__, strerror(errno));
1468 goto fail;
1469 }
1470 if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1471 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1472 "roaming: %s", __func__, strerror(errno));
1473 goto fail;
1474 }
1475
1476 if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1477 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1478 __func__, strerror(errno));
1479 goto fail;
1480 }
1481
1482 wpa_driver_bsd_set_wpa(drv, 1);
1483
1484 return drv;
1485 fail:
1486 close(drv->sock);
1487 fail1:
1488 os_free(drv);
1489 return NULL;
1490 #undef GETPARAM
1491 }
1492
1493 static void
1494 wpa_driver_bsd_deinit(void *priv)
1495 {
1496 struct wpa_driver_bsd_data *drv = priv;
1497 int flags;
1498
1499 wpa_driver_bsd_set_wpa(drv, 0);
1500 eloop_unregister_read_sock(drv->route);
1501
1502 /* NB: mark interface down */
1503 if (getifflags(drv, &flags) == 0)
1504 (void) setifflags(drv, flags &~ IFF_UP);
1505
1506 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1507 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1508 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1509 __func__);
1510
1511 (void) close(drv->route); /* ioctl socket */
1512 (void) close(drv->sock); /* event socket */
1513 os_free(drv);
1514 }
1515
1516
1517 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1518 .name = "bsd",
1519 .desc = "BSD 802.11 support",
1520 .init = wpa_driver_bsd_init,
1521 .deinit = wpa_driver_bsd_deinit,
1522 .get_bssid = wpa_driver_bsd_get_bssid,
1523 .get_ssid = wpa_driver_bsd_get_ssid,
1524 .set_key = wpa_driver_bsd_set_key,
1525 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
1526 .scan = wpa_driver_bsd_scan,
1527 .get_scan_results2 = wpa_driver_bsd_get_scan_results2,
1528 .deauthenticate = wpa_driver_bsd_deauthenticate,
1529 .disassociate = wpa_driver_bsd_disassociate,
1530 .associate = wpa_driver_bsd_associate,
1531 };
1532
1533 #endif /* HOSTAPD */
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