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[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 "common/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
158 struct bsd_driver_data {
159 struct hostapd_data *hapd; /* back pointer */
160
161 char iface[IFNAMSIZ + 1];
162 struct l2_packet_data *sock_xmit; /* raw packet xmit socket */
163 int ioctl_sock; /* socket for ioctl() use */
164 int wext_sock; /* socket for wireless events */
165 };
166
167 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
168 int reason_code);
169
170 static int
171 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
172 {
173 return bsd_set80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
174 }
175
176 static int
177 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
178 {
179 return bsd_get80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
180 }
181
182 static int
183 set80211param(struct bsd_driver_data *drv, int op, int arg)
184 {
185 return bsd_set80211param(drv->ioctl_sock, drv->iface, op, arg);
186 }
187
188 static const char *
189 ether_sprintf(const u8 *addr)
190 {
191 static char buf[sizeof(MACSTR)];
192
193 if (addr != NULL)
194 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
195 else
196 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
197 return buf;
198 }
199
200 /*
201 * Configure WPA parameters.
202 */
203 static int
204 bsd_configure_wpa(struct bsd_driver_data *drv, struct wpa_bss_params *params)
205 {
206 static const char *ciphernames[] =
207 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
208 int v;
209
210 switch (params->wpa_group) {
211 case WPA_CIPHER_CCMP:
212 v = IEEE80211_CIPHER_AES_CCM;
213 break;
214 case WPA_CIPHER_TKIP:
215 v = IEEE80211_CIPHER_TKIP;
216 break;
217 case WPA_CIPHER_WEP104:
218 v = IEEE80211_CIPHER_WEP;
219 break;
220 case WPA_CIPHER_WEP40:
221 v = IEEE80211_CIPHER_WEP;
222 break;
223 case WPA_CIPHER_NONE:
224 v = IEEE80211_CIPHER_NONE;
225 break;
226 default:
227 printf("Unknown group key cipher %u\n",
228 params->wpa_group);
229 return -1;
230 }
231 wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
232 __func__, ciphernames[v], v);
233 if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
234 printf("Unable to set group key cipher to %u (%s)\n",
235 v, ciphernames[v]);
236 return -1;
237 }
238 if (v == IEEE80211_CIPHER_WEP) {
239 /* key length is done only for specific ciphers */
240 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
241 if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
242 printf("Unable to set group key length to %u\n", v);
243 return -1;
244 }
245 }
246
247 v = 0;
248 if (params->wpa_pairwise & WPA_CIPHER_CCMP)
249 v |= 1<<IEEE80211_CIPHER_AES_CCM;
250 if (params->wpa_pairwise & WPA_CIPHER_TKIP)
251 v |= 1<<IEEE80211_CIPHER_TKIP;
252 if (params->wpa_pairwise & WPA_CIPHER_NONE)
253 v |= 1<<IEEE80211_CIPHER_NONE;
254 wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
255 if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
256 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
257 return -1;
258 }
259
260 wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
261 __func__, params->wpa_key_mgmt);
262 if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, params->wpa_key_mgmt))
263 {
264 printf("Unable to set key management algorithms to 0x%x\n",
265 params->wpa_key_mgmt);
266 return -1;
267 }
268
269 v = 0;
270 if (params->rsn_preauth)
271 v |= BIT(0);
272 wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
273 __func__, params->rsn_preauth);
274 if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
275 printf("Unable to set RSN capabilities to 0x%x\n", v);
276 return -1;
277 }
278
279 wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
280 if (set80211param(drv, IEEE80211_IOC_WPA, params->wpa)) {
281 printf("Unable to set WPA to %u\n", params->wpa);
282 return -1;
283 }
284 return 0;
285 }
286
287
288 static int
289 bsd_set_iface_flags(void *priv, int dev_up)
290 {
291 struct bsd_driver_data *drv = priv;
292 struct ifreq ifr;
293
294 wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
295
296 if (drv->ioctl_sock < 0)
297 return -1;
298
299 memset(&ifr, 0, sizeof(ifr));
300 os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
301
302 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
303 perror("ioctl[SIOCGIFFLAGS]");
304 return -1;
305 }
306
307 if (dev_up)
308 ifr.ifr_flags |= IFF_UP;
309 else
310 ifr.ifr_flags &= ~IFF_UP;
311
312 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
313 perror("ioctl[SIOCSIFFLAGS]");
314 return -1;
315 }
316
317 return 0;
318 }
319
320 static int
321 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
322 {
323 struct bsd_driver_data *drv = priv;
324
325 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
326
327 if (!params->enabled) {
328 /* XXX restore state */
329 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
330 IEEE80211_AUTH_AUTO);
331 }
332 if (!params->wpa && !params->ieee802_1x) {
333 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
334 HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
335 return -1;
336 }
337 if (params->wpa && bsd_configure_wpa(drv, params) != 0) {
338 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
339 HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
340 return -1;
341 }
342 if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
343 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
344 hostapd_logger(drv->hapd, NULL, HOSTAPD_MODULE_DRIVER,
345 HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
346 return -1;
347 }
348 return bsd_set_iface_flags(priv, 1);
349 }
350
351 static int
352 bsd_set_privacy(const char *ifname, void *priv, int enabled)
353 {
354 struct bsd_driver_data *drv = priv;
355
356 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
357
358 return set80211param(drv, IEEE80211_IOC_PRIVACY, enabled);
359 }
360
361 static int
362 bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
363 {
364 struct bsd_driver_data *drv = priv;
365 struct ieee80211req_mlme mlme;
366
367 wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
368 __func__, ether_sprintf(addr), authorized);
369
370 if (authorized)
371 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
372 else
373 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
374 mlme.im_reason = 0;
375 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
376 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
377 }
378
379 static int
380 bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
381 int flags_and)
382 {
383 /* For now, only support setting Authorized flag */
384 if (flags_or & WPA_STA_AUTHORIZED)
385 return bsd_set_sta_authorized(priv, addr, 1);
386 if (!(flags_and & WPA_STA_AUTHORIZED))
387 return bsd_set_sta_authorized(priv, addr, 0);
388 return 0;
389 }
390
391 static int
392 bsd_del_key(void *priv, const u8 *addr, int key_idx)
393 {
394 struct bsd_driver_data *drv = priv;
395 struct ieee80211req_del_key wk;
396
397 wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
398 __func__, ether_sprintf(addr), key_idx);
399
400 memset(&wk, 0, sizeof(wk));
401 if (addr != NULL) {
402 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
403 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
404 } else {
405 wk.idk_keyix = key_idx;
406 }
407
408 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
409 }
410
411 static int
412 bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
413 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
414 size_t seq_len, const u8 *key, size_t key_len)
415 {
416 struct bsd_driver_data *drv = priv;
417 struct ieee80211req_key wk;
418 u_int8_t cipher;
419
420 if (alg == WPA_ALG_NONE)
421 return bsd_del_key(drv, addr, key_idx);
422
423 wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
424 __func__, alg, ether_sprintf(addr), key_idx);
425
426 if (alg == WPA_ALG_WEP)
427 cipher = IEEE80211_CIPHER_WEP;
428 else if (alg == WPA_ALG_TKIP)
429 cipher = IEEE80211_CIPHER_TKIP;
430 else if (alg == WPA_ALG_CCMP)
431 cipher = IEEE80211_CIPHER_AES_CCM;
432 else {
433 printf("%s: unknown/unsupported algorithm %d\n",
434 __func__, alg);
435 return -1;
436 }
437
438 if (key_len > sizeof(wk.ik_keydata)) {
439 printf("%s: key length %d too big\n", __func__, (int) key_len);
440 return -3;
441 }
442
443 memset(&wk, 0, sizeof(wk));
444 wk.ik_type = cipher;
445 wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
446 if (addr == NULL) {
447 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
448 wk.ik_keyix = key_idx;
449 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
450 } else {
451 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
452 wk.ik_keyix = IEEE80211_KEYIX_NONE;
453 }
454 wk.ik_keylen = key_len;
455 memcpy(wk.ik_keydata, key, key_len);
456
457 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
458 }
459
460
461 static int
462 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
463 u8 *seq)
464 {
465 struct bsd_driver_data *drv = priv;
466 struct ieee80211req_key wk;
467
468 wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
469 __func__, ether_sprintf(addr), idx);
470
471 memset(&wk, 0, sizeof(wk));
472 if (addr == NULL)
473 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
474 else
475 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
476 wk.ik_keyix = idx;
477
478 if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
479 printf("Failed to get encryption.\n");
480 return -1;
481 }
482
483 #ifdef WORDS_BIGENDIAN
484 {
485 /*
486 * wk.ik_keytsc is in host byte order (big endian), need to
487 * swap it to match with the byte order used in WPA.
488 */
489 int i;
490 u8 tmp[WPA_KEY_RSC_LEN];
491 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
492 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
493 seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
494 }
495 }
496 #else /* WORDS_BIGENDIAN */
497 memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
498 #endif /* WORDS_BIGENDIAN */
499 return 0;
500 }
501
502
503 static int
504 bsd_flush(void *priv)
505 {
506 u8 allsta[IEEE80211_ADDR_LEN];
507
508 memset(allsta, 0xff, IEEE80211_ADDR_LEN);
509 return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
510 }
511
512
513 static int
514 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
515 const u8 *addr)
516 {
517 struct bsd_driver_data *drv = priv;
518 struct ieee80211req_sta_stats stats;
519
520 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
521 if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
522 /* XXX? do packets counts include non-data frames? */
523 data->rx_packets = stats.is_stats.ns_rx_data;
524 data->rx_bytes = stats.is_stats.ns_rx_bytes;
525 data->tx_packets = stats.is_stats.ns_tx_data;
526 data->tx_bytes = stats.is_stats.ns_tx_bytes;
527 }
528 return 0;
529 }
530
531 static int
532 bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
533 {
534 /*
535 * Do nothing; we setup parameters at startup that define the
536 * contents of the beacon information element.
537 */
538 return 0;
539 }
540
541 static int
542 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
543 {
544 struct bsd_driver_data *drv = priv;
545 struct ieee80211req_mlme mlme;
546
547 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
548 __func__, ether_sprintf(addr), reason_code);
549
550 mlme.im_op = IEEE80211_MLME_DEAUTH;
551 mlme.im_reason = reason_code;
552 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
553 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
554 }
555
556 static int
557 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
558 int reason_code)
559 {
560 struct bsd_driver_data *drv = priv;
561 struct ieee80211req_mlme mlme;
562
563 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
564 __func__, ether_sprintf(addr), reason_code);
565
566 mlme.im_op = IEEE80211_MLME_DISASSOC;
567 mlme.im_reason = reason_code;
568 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
569 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
570 }
571
572 static int
573 bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
574 {
575 struct hostapd_data *hapd = drv->hapd;
576 struct ieee80211req_wpaie ie;
577 int ielen = 0;
578 u8 *iebuf = NULL;
579
580 /*
581 * Fetch and validate any negotiated WPA/RSN parameters.
582 */
583 memset(&ie, 0, sizeof(ie));
584 memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
585 if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
586 printf("Failed to get WPA/RSN information element.\n");
587 goto no_ie;
588 }
589 iebuf = ie.wpa_ie;
590 ielen = ie.wpa_ie[1];
591 if (ielen == 0)
592 iebuf = NULL;
593 else
594 ielen += 2;
595
596 no_ie:
597 return hostapd_notif_assoc(hapd, addr, iebuf, ielen);
598 }
599
600 static void
601 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
602 {
603 struct bsd_driver_data *drv = ctx;
604 struct hostapd_data *hapd = drv->hapd;
605 char buf[2048];
606 struct if_announcemsghdr *ifan;
607 struct rt_msghdr *rtm;
608 struct ieee80211_michael_event *mic;
609 struct ieee80211_join_event *join;
610 struct ieee80211_leave_event *leave;
611 int n;
612
613 n = read(sock, buf, sizeof(buf));
614 if (n < 0) {
615 if (errno != EINTR && errno != EAGAIN)
616 perror("read(PF_ROUTE)");
617 return;
618 }
619
620 rtm = (struct rt_msghdr *) buf;
621 if (rtm->rtm_version != RTM_VERSION) {
622 wpa_printf(MSG_DEBUG, "Routing message version %d not "
623 "understood\n", rtm->rtm_version);
624 return;
625 }
626 ifan = (struct if_announcemsghdr *) rtm;
627 switch (rtm->rtm_type) {
628 case RTM_IEEE80211:
629 switch (ifan->ifan_what) {
630 case RTM_IEEE80211_ASSOC:
631 case RTM_IEEE80211_REASSOC:
632 case RTM_IEEE80211_DISASSOC:
633 case RTM_IEEE80211_SCAN:
634 break;
635 case RTM_IEEE80211_LEAVE:
636 leave = (struct ieee80211_leave_event *) &ifan[1];
637 hostapd_notif_disassoc(drv->hapd, leave->iev_addr);
638 break;
639 case RTM_IEEE80211_JOIN:
640 #ifdef RTM_IEEE80211_REJOIN
641 case RTM_IEEE80211_REJOIN:
642 #endif
643 join = (struct ieee80211_join_event *) &ifan[1];
644 bsd_new_sta(drv, join->iev_addr);
645 break;
646 case RTM_IEEE80211_REPLAY:
647 /* ignore */
648 break;
649 case RTM_IEEE80211_MICHAEL:
650 mic = (struct ieee80211_michael_event *) &ifan[1];
651 wpa_printf(MSG_DEBUG,
652 "Michael MIC failure wireless event: "
653 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
654 MAC2STR(mic->iev_src));
655 hostapd_michael_mic_failure(hapd, mic->iev_src);
656 break;
657 }
658 break;
659 }
660 }
661
662 static int
663 bsd_wireless_event_init(struct bsd_driver_data *drv)
664 {
665 int s;
666
667 drv->wext_sock = -1;
668
669 s = socket(PF_ROUTE, SOCK_RAW, 0);
670 if (s < 0) {
671 perror("socket(PF_ROUTE,SOCK_RAW)");
672 return -1;
673 }
674 eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
675 drv->wext_sock = s;
676
677 return 0;
678 }
679
680 static void
681 bsd_wireless_event_deinit(struct bsd_driver_data *drv)
682 {
683 if (drv->wext_sock < 0)
684 return;
685 eloop_unregister_read_sock(drv->wext_sock);
686 close(drv->wext_sock);
687 }
688
689
690 static int
691 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
692 int encrypt, const u8 *own_addr)
693 {
694 struct bsd_driver_data *drv = priv;
695 unsigned char buf[3000];
696 unsigned char *bp = buf;
697 struct l2_ethhdr *eth;
698 size_t len;
699 int status;
700
701 /*
702 * Prepend the Etherent header. If the caller left us
703 * space at the front we could just insert it but since
704 * we don't know we copy to a local buffer. Given the frequency
705 * and size of frames this probably doesn't matter.
706 */
707 len = data_len + sizeof(struct l2_ethhdr);
708 if (len > sizeof(buf)) {
709 bp = malloc(len);
710 if (bp == NULL) {
711 printf("EAPOL frame discarded, cannot malloc temp "
712 "buffer of size %u!\n", (unsigned int) len);
713 return -1;
714 }
715 }
716 eth = (struct l2_ethhdr *) bp;
717 memcpy(eth->h_dest, addr, ETH_ALEN);
718 memcpy(eth->h_source, own_addr, ETH_ALEN);
719 eth->h_proto = htons(ETH_P_EAPOL);
720 memcpy(eth+1, data, data_len);
721
722 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
723
724 status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
725
726 if (bp != buf)
727 free(bp);
728 return status;
729 }
730
731 static void
732 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
733 {
734 struct bsd_driver_data *drv = ctx;
735 hostapd_eapol_receive(drv->hapd, src_addr,
736 buf + sizeof(struct l2_ethhdr),
737 len - sizeof(struct l2_ethhdr));
738 }
739
740 static int
741 hostapd_bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
742 {
743 struct bsd_driver_data *drv = priv;
744 int ssid_len;
745
746 ssid_len = bsd_get_ssid(drv->ioctl_sock, drv->iface, buf);
747 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
748
749 return ssid_len;
750 }
751
752 static int
753 hostapd_bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
754 {
755 struct bsd_driver_data *drv = priv;
756
757 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
758
759 return bsd_set_ssid(drv->ioctl_sock, drv->iface, buf, len);
760 }
761
762 static void *
763 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
764 {
765 struct bsd_driver_data *drv;
766
767 drv = os_zalloc(sizeof(struct bsd_driver_data));
768 if (drv == NULL) {
769 printf("Could not allocate memory for bsd driver data\n");
770 goto bad;
771 }
772
773 drv->hapd = hapd;
774 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
775 if (drv->ioctl_sock < 0) {
776 perror("socket[PF_INET,SOCK_DGRAM]");
777 goto bad;
778 }
779 memcpy(drv->iface, params->ifname, sizeof(drv->iface));
780
781 drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
782 handle_read, drv, 1);
783 if (drv->sock_xmit == NULL)
784 goto bad;
785 if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
786 goto bad;
787
788 bsd_set_iface_flags(drv, 0); /* mark down during setup */
789 if (bsd_wireless_event_init(drv))
790 goto bad;
791
792 return drv;
793 bad:
794 if (drv->sock_xmit != NULL)
795 l2_packet_deinit(drv->sock_xmit);
796 if (drv->ioctl_sock >= 0)
797 close(drv->ioctl_sock);
798 if (drv != NULL)
799 free(drv);
800 return NULL;
801 }
802
803
804 static void
805 bsd_deinit(void *priv)
806 {
807 struct bsd_driver_data *drv = priv;
808
809 bsd_wireless_event_deinit(drv);
810 (void) bsd_set_iface_flags(drv, 0);
811 if (drv->ioctl_sock >= 0)
812 close(drv->ioctl_sock);
813 if (drv->sock_xmit != NULL)
814 l2_packet_deinit(drv->sock_xmit);
815 free(drv);
816 }
817
818 const struct wpa_driver_ops wpa_driver_bsd_ops = {
819 .name = "bsd",
820 .hapd_init = bsd_init,
821 .hapd_deinit = bsd_deinit,
822 .set_ieee8021x = bsd_set_ieee8021x,
823 .set_privacy = bsd_set_privacy,
824 .set_key = bsd_set_key,
825 .get_seqnum = bsd_get_seqnum,
826 .flush = bsd_flush,
827 .set_generic_elem = bsd_set_opt_ie,
828 .sta_set_flags = bsd_sta_set_flags,
829 .read_sta_data = bsd_read_sta_driver_data,
830 .hapd_send_eapol = bsd_send_eapol,
831 .sta_disassoc = bsd_sta_disassoc,
832 .sta_deauth = bsd_sta_deauth,
833 .hapd_set_ssid = hostapd_bsd_set_ssid,
834 .hapd_get_ssid = hostapd_bsd_get_ssid,
835 };
836
837 #else /* HOSTAPD */
838
839 struct wpa_driver_bsd_data {
840 int sock; /* open socket for 802.11 ioctls */
841 int route; /* routing socket for events */
842 char ifname[IFNAMSIZ+1]; /* interface name */
843 unsigned int ifindex; /* interface index */
844 void *ctx;
845 int prev_roaming; /* roaming state to restore on deinit */
846 int prev_privacy; /* privacy state to restore on deinit */
847 int prev_wpa; /* wpa state to restore on deinit */
848 };
849
850 static int
851 set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
852 {
853 return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
854 }
855
856 static int
857 get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
858 {
859 return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
860 }
861
862 static int
863 set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
864 {
865 return bsd_set80211param(drv->sock, drv->ifname, op, arg);
866 }
867
868 static int
869 get80211param(struct wpa_driver_bsd_data *drv, int op)
870 {
871 struct ieee80211req ireq;
872
873 os_memset(&ireq, 0, sizeof(ireq));
874 os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
875 ireq.i_type = op;
876
877 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
878 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
879 op, strerror(errno));
880 return -1;
881 }
882 return ireq.i_val;
883 }
884
885 static int
886 getifflags(struct wpa_driver_bsd_data *drv, int *flags)
887 {
888 struct ifreq ifr;
889
890 os_memset(&ifr, 0, sizeof(ifr));
891 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
892 if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
893 perror("SIOCGIFFLAGS");
894 return errno;
895 }
896 *flags = ifr.ifr_flags & 0xffff;
897 return 0;
898 }
899
900 static int
901 setifflags(struct wpa_driver_bsd_data *drv, int flags)
902 {
903 struct ifreq ifr;
904
905 os_memset(&ifr, 0, sizeof(ifr));
906 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
907 ifr.ifr_flags = flags & 0xffff;
908 if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
909 perror("SIOCSIFFLAGS");
910 return errno;
911 }
912 return 0;
913 }
914
915 static int
916 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
917 {
918 struct wpa_driver_bsd_data *drv = priv;
919 #ifdef SIOCG80211BSSID
920 struct ieee80211_bssid bs;
921
922 os_strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
923 if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
924 return -1;
925 os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
926 return 0;
927 #else
928 return get80211var(drv, IEEE80211_IOC_BSSID,
929 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
930 #endif
931 }
932
933 #if 0
934 static int
935 wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
936 {
937 struct wpa_driver_bsd_data *drv = priv;
938
939 return set80211var(drv, IEEE80211_IOC_BSSID,
940 bssid, IEEE80211_ADDR_LEN);
941 }
942 #endif
943
944 static int
945 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
946 {
947 struct wpa_driver_bsd_data *drv = priv;
948
949 return bsd_get_ssid(drv->sock, drv->ifname, ssid);
950 }
951
952 static int
953 wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
954 size_t ssid_len)
955 {
956 struct wpa_driver_bsd_data *drv = priv;
957
958 return bsd_set_ssid(drv->sock, drv->ifname, ssid, ssid_len);
959 }
960
961 static int
962 wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
963 const u8 *wpa_ie, size_t wpa_ie_len)
964 {
965 return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
966 }
967
968 static int
969 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
970 {
971 struct wpa_driver_bsd_data *drv = priv;
972 int ret = 0;
973
974 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
975 __FUNCTION__, wpa, privacy);
976
977 if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
978 ret = -1;
979 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
980 ret = -1;
981 if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
982 ret = -1;
983
984 return ret;
985 }
986
987 static int
988 wpa_driver_bsd_set_wpa(void *priv, int enabled)
989 {
990 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
991
992 return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
993 }
994
995 static int
996 wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
997 const unsigned char *addr)
998 {
999 struct ieee80211req_del_key wk;
1000
1001 os_memset(&wk, 0, sizeof(wk));
1002 if (addr != NULL &&
1003 bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
1004 struct ether_addr ea;
1005
1006 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1007 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
1008 __func__, ether_ntoa(&ea), key_idx);
1009 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1010 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
1011 } else {
1012 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
1013 wk.idk_keyix = key_idx;
1014 }
1015 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
1016 }
1017
1018 static int
1019 wpa_driver_bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
1020 const unsigned char *addr, int key_idx, int set_tx,
1021 const u8 *seq, size_t seq_len,
1022 const u8 *key, size_t key_len)
1023 {
1024 struct wpa_driver_bsd_data *drv = priv;
1025 struct ieee80211req_key wk;
1026 struct ether_addr ea;
1027 char *alg_name;
1028 u_int8_t cipher;
1029
1030 if (alg == WPA_ALG_NONE)
1031 return wpa_driver_bsd_del_key(drv, key_idx, addr);
1032
1033 switch (alg) {
1034 case WPA_ALG_WEP:
1035 alg_name = "WEP";
1036 cipher = IEEE80211_CIPHER_WEP;
1037 break;
1038 case WPA_ALG_TKIP:
1039 alg_name = "TKIP";
1040 cipher = IEEE80211_CIPHER_TKIP;
1041 break;
1042 case WPA_ALG_CCMP:
1043 alg_name = "CCMP";
1044 cipher = IEEE80211_CIPHER_AES_CCM;
1045 break;
1046 default:
1047 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1048 __func__, alg);
1049 return -1;
1050 }
1051
1052 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1053 wpa_printf(MSG_DEBUG,
1054 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
1055 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
1056 seq_len, key_len);
1057
1058 if (seq_len > sizeof(u_int64_t)) {
1059 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
1060 __func__, seq_len);
1061 return -2;
1062 }
1063 if (key_len > sizeof(wk.ik_keydata)) {
1064 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
1065 __func__, key_len);
1066 return -3;
1067 }
1068
1069 os_memset(&wk, 0, sizeof(wk));
1070 wk.ik_type = cipher;
1071 wk.ik_flags = IEEE80211_KEY_RECV;
1072 if (set_tx)
1073 wk.ik_flags |= IEEE80211_KEY_XMIT;
1074 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1075 /*
1076 * Deduce whether group/global or unicast key by checking
1077 * the address (yech). Note also that we can only mark global
1078 * keys default; doing this for a unicast key is an error.
1079 */
1080 if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
1081 wk.ik_flags |= IEEE80211_KEY_GROUP;
1082 wk.ik_keyix = key_idx;
1083 } else {
1084 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
1085 }
1086 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
1087 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
1088 wk.ik_keylen = key_len;
1089 os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1090 os_memcpy(wk.ik_keydata, key, key_len);
1091
1092 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
1093 }
1094
1095 static int
1096 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1097 {
1098 struct wpa_driver_bsd_data *drv = priv;
1099
1100 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1101 return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1102 }
1103
1104
1105 static int
1106 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1107 {
1108 struct wpa_driver_bsd_data *drv = priv;
1109
1110 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1111 return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1112 }
1113
1114 static int
1115 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1116 {
1117 struct wpa_driver_bsd_data *drv = priv;
1118 struct ieee80211req_mlme mlme;
1119
1120 wpa_printf(MSG_DEBUG, "%s", __func__);
1121 os_memset(&mlme, 0, sizeof(mlme));
1122 mlme.im_op = IEEE80211_MLME_DEAUTH;
1123 mlme.im_reason = reason_code;
1124 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1125 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1126 }
1127
1128 static int
1129 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
1130 {
1131 struct wpa_driver_bsd_data *drv = priv;
1132 struct ieee80211req_mlme mlme;
1133
1134 wpa_printf(MSG_DEBUG, "%s", __func__);
1135 os_memset(&mlme, 0, sizeof(mlme));
1136 mlme.im_op = IEEE80211_MLME_DISASSOC;
1137 mlme.im_reason = reason_code;
1138 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1139 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1140 }
1141
1142 static int
1143 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1144 {
1145 struct wpa_driver_bsd_data *drv = priv;
1146 int authmode;
1147
1148 if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1149 (auth_alg & AUTH_ALG_SHARED_KEY))
1150 authmode = IEEE80211_AUTH_AUTO;
1151 else if (auth_alg & AUTH_ALG_SHARED_KEY)
1152 authmode = IEEE80211_AUTH_SHARED;
1153 else
1154 authmode = IEEE80211_AUTH_OPEN;
1155
1156 return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1157 }
1158
1159 static int
1160 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1161 {
1162 struct wpa_driver_bsd_data *drv = priv;
1163 struct ieee80211req_mlme mlme;
1164 int privacy;
1165 int ret = 0;
1166
1167 wpa_printf(MSG_DEBUG,
1168 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1169 , __func__
1170 , (unsigned int) params->ssid_len, params->ssid
1171 , (unsigned int) params->wpa_ie_len
1172 , params->pairwise_suite
1173 , params->group_suite
1174 , params->key_mgmt_suite
1175 );
1176
1177 if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1178 < 0)
1179 ret = -1;
1180 if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1181 ret = -1;
1182 /* XXX error handling is wrong but unclear what to do... */
1183 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1184 return -1;
1185
1186 privacy = !(params->pairwise_suite == CIPHER_NONE &&
1187 params->group_suite == CIPHER_NONE &&
1188 params->key_mgmt_suite == KEY_MGMT_NONE &&
1189 params->wpa_ie_len == 0);
1190 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1191
1192 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1193 return -1;
1194
1195 if (params->wpa_ie_len &&
1196 set80211param(drv, IEEE80211_IOC_WPA,
1197 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1198 return -1;
1199
1200 os_memset(&mlme, 0, sizeof(mlme));
1201 mlme.im_op = IEEE80211_MLME_ASSOC;
1202 if (params->ssid != NULL)
1203 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1204 mlme.im_ssid_len = params->ssid_len;
1205 if (params->bssid != NULL)
1206 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1207 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1208 return -1;
1209 return ret;
1210 }
1211
1212 static int
1213 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1214 {
1215 struct wpa_driver_bsd_data *drv = priv;
1216 int flags;
1217 const u8 *ssid = params->ssids[0].ssid;
1218 size_t ssid_len = params->ssids[0].ssid_len;
1219
1220 /* NB: interface must be marked UP to do a scan */
1221 if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1222 return -1;
1223
1224 /* set desired ssid before scan */
1225 if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1226 return -1;
1227
1228 /* NB: net80211 delivers a scan complete event so no need to poll */
1229 return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1230 }
1231
1232 static void
1233 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1234 {
1235 struct wpa_driver_bsd_data *drv = sock_ctx;
1236 char buf[2048];
1237 struct if_announcemsghdr *ifan;
1238 struct if_msghdr *ifm;
1239 struct rt_msghdr *rtm;
1240 union wpa_event_data event;
1241 struct ieee80211_michael_event *mic;
1242 int n;
1243
1244 n = read(sock, buf, sizeof(buf));
1245 if (n < 0) {
1246 if (errno != EINTR && errno != EAGAIN)
1247 perror("read(PF_ROUTE)");
1248 return;
1249 }
1250
1251 rtm = (struct rt_msghdr *) buf;
1252 if (rtm->rtm_version != RTM_VERSION) {
1253 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1254 "understood\n", rtm->rtm_version);
1255 return;
1256 }
1257 os_memset(&event, 0, sizeof(event));
1258 switch (rtm->rtm_type) {
1259 case RTM_IFANNOUNCE:
1260 ifan = (struct if_announcemsghdr *) rtm;
1261 if (ifan->ifan_index != drv->ifindex)
1262 break;
1263 strlcpy(event.interface_status.ifname, drv->ifname,
1264 sizeof(event.interface_status.ifname));
1265 switch (ifan->ifan_what) {
1266 case IFAN_DEPARTURE:
1267 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1268 default:
1269 return;
1270 }
1271 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1272 event.interface_status.ifname,
1273 ifan->ifan_what == IFAN_DEPARTURE ?
1274 "removed" : "added");
1275 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1276 break;
1277 case RTM_IEEE80211:
1278 ifan = (struct if_announcemsghdr *) rtm;
1279 if (ifan->ifan_index != drv->ifindex)
1280 break;
1281 switch (ifan->ifan_what) {
1282 case RTM_IEEE80211_ASSOC:
1283 case RTM_IEEE80211_REASSOC:
1284 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1285 break;
1286 case RTM_IEEE80211_DISASSOC:
1287 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1288 break;
1289 case RTM_IEEE80211_SCAN:
1290 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1291 break;
1292 case RTM_IEEE80211_REPLAY:
1293 /* ignore */
1294 break;
1295 case RTM_IEEE80211_MICHAEL:
1296 mic = (struct ieee80211_michael_event *) &ifan[1];
1297 wpa_printf(MSG_DEBUG,
1298 "Michael MIC failure wireless event: "
1299 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1300 MAC2STR(mic->iev_src));
1301
1302 os_memset(&event, 0, sizeof(event));
1303 event.michael_mic_failure.unicast =
1304 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1305 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1306 &event);
1307 break;
1308 }
1309 break;
1310 case RTM_IFINFO:
1311 ifm = (struct if_msghdr *) rtm;
1312 if (ifm->ifm_index != drv->ifindex)
1313 break;
1314 if ((rtm->rtm_flags & RTF_UP) == 0) {
1315 strlcpy(event.interface_status.ifname, drv->ifname,
1316 sizeof(event.interface_status.ifname));
1317 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1318 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1319 event.interface_status.ifname);
1320 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1321 }
1322 break;
1323 }
1324 }
1325
1326 static void
1327 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1328 struct ieee80211req_scan_result *sr)
1329 {
1330 struct wpa_scan_res *result, **tmp;
1331 size_t extra_len;
1332 u8 *pos;
1333
1334 extra_len = 2 + sr->isr_ssid_len;
1335 extra_len += 2 + sr->isr_nrates;
1336 extra_len += 3; /* ERP IE */
1337 extra_len += sr->isr_ie_len;
1338
1339 result = os_zalloc(sizeof(*result) + extra_len);
1340 if (result == NULL)
1341 return;
1342 os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1343 result->freq = sr->isr_freq;
1344 result->beacon_int = sr->isr_intval;
1345 result->caps = sr->isr_capinfo;
1346 result->qual = sr->isr_rssi;
1347 result->noise = sr->isr_noise;
1348
1349 pos = (u8 *)(result + 1);
1350
1351 *pos++ = WLAN_EID_SSID;
1352 *pos++ = sr->isr_ssid_len;
1353 os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1354 pos += sr->isr_ssid_len;
1355
1356 /*
1357 * Deal all rates as supported rate.
1358 * Because net80211 doesn't report extended supported rate or not.
1359 */
1360 *pos++ = WLAN_EID_SUPP_RATES;
1361 *pos++ = sr->isr_nrates;
1362 os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1363 pos += sr->isr_nrates;
1364
1365 *pos++ = WLAN_EID_ERP_INFO;
1366 *pos++ = 1;
1367 *pos++ = sr->isr_erp;
1368
1369 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1370 pos += sr->isr_ie_len;
1371
1372 result->ie_len = pos - (u8 *)(result + 1);
1373
1374 tmp = os_realloc(res->res,
1375 (res->num + 1) * sizeof(struct wpa_scan_res *));
1376 if (tmp == NULL) {
1377 os_free(result);
1378 return;
1379 }
1380 tmp[res->num++] = result;
1381 res->res = tmp;
1382 }
1383
1384 struct wpa_scan_results *
1385 wpa_driver_bsd_get_scan_results2(void *priv)
1386 {
1387 struct wpa_driver_bsd_data *drv = priv;
1388 struct ieee80211req_scan_result *sr;
1389 struct wpa_scan_results *res;
1390 int len, rest;
1391 uint8_t buf[24*1024], *pos;
1392
1393 len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1394 if (len < 0)
1395 return NULL;
1396
1397 res = os_zalloc(sizeof(*res));
1398 if (res == NULL)
1399 return NULL;
1400
1401 pos = buf;
1402 rest = len;
1403 while (rest >= sizeof(struct ieee80211req_scan_result)) {
1404 sr = (struct ieee80211req_scan_result *)pos;
1405 wpa_driver_bsd_add_scan_entry(res, sr);
1406 pos += sr->isr_len;
1407 rest -= sr->isr_len;
1408 }
1409
1410 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1411 len, (unsigned long)res->num);
1412
1413 return res;
1414 }
1415
1416 static void *
1417 wpa_driver_bsd_init(void *ctx, const char *ifname)
1418 {
1419 #define GETPARAM(drv, param, v) \
1420 (((v) = get80211param(drv, param)) != -1)
1421 struct wpa_driver_bsd_data *drv;
1422
1423 drv = os_zalloc(sizeof(*drv));
1424 if (drv == NULL)
1425 return NULL;
1426 /*
1427 * NB: We require the interface name be mappable to an index.
1428 * This implies we do not support having wpa_supplicant
1429 * wait for an interface to appear. This seems ok; that
1430 * doesn't belong here; it's really the job of devd.
1431 */
1432 drv->ifindex = if_nametoindex(ifname);
1433 if (drv->ifindex == 0) {
1434 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1435 __func__, ifname);
1436 goto fail1;
1437 }
1438 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1439 if (drv->sock < 0)
1440 goto fail1;
1441 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1442 if (drv->route < 0)
1443 goto fail;
1444 eloop_register_read_sock(drv->route,
1445 wpa_driver_bsd_event_receive, ctx, drv);
1446
1447 drv->ctx = ctx;
1448 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1449
1450 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1451 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1452 __func__, strerror(errno));
1453 goto fail;
1454 }
1455 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1456 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1457 __func__, strerror(errno));
1458 goto fail;
1459 }
1460 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1461 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1462 __func__, strerror(errno));
1463 goto fail;
1464 }
1465 if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1466 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1467 "roaming: %s", __func__, strerror(errno));
1468 goto fail;
1469 }
1470
1471 if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1472 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1473 __func__, strerror(errno));
1474 goto fail;
1475 }
1476
1477 wpa_driver_bsd_set_wpa(drv, 1);
1478
1479 return drv;
1480 fail:
1481 close(drv->sock);
1482 fail1:
1483 os_free(drv);
1484 return NULL;
1485 #undef GETPARAM
1486 }
1487
1488 static void
1489 wpa_driver_bsd_deinit(void *priv)
1490 {
1491 struct wpa_driver_bsd_data *drv = priv;
1492 int flags;
1493
1494 wpa_driver_bsd_set_wpa(drv, 0);
1495 eloop_unregister_read_sock(drv->route);
1496
1497 /* NB: mark interface down */
1498 if (getifflags(drv, &flags) == 0)
1499 (void) setifflags(drv, flags &~ IFF_UP);
1500
1501 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1502 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1503 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1504 __func__);
1505
1506 (void) close(drv->route); /* ioctl socket */
1507 (void) close(drv->sock); /* event socket */
1508 os_free(drv);
1509 }
1510
1511
1512 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1513 .name = "bsd",
1514 .desc = "BSD 802.11 support",
1515 .init = wpa_driver_bsd_init,
1516 .deinit = wpa_driver_bsd_deinit,
1517 .get_bssid = wpa_driver_bsd_get_bssid,
1518 .get_ssid = wpa_driver_bsd_get_ssid,
1519 .set_key = wpa_driver_bsd_set_key,
1520 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
1521 .scan2 = wpa_driver_bsd_scan,
1522 .get_scan_results2 = wpa_driver_bsd_get_scan_results2,
1523 .deauthenticate = wpa_driver_bsd_deauthenticate,
1524 .disassociate = wpa_driver_bsd_disassociate,
1525 .associate = wpa_driver_bsd_associate,
1526 };
1527
1528 #endif /* HOSTAPD */
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