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driver_test: Remove forgotten, unused prototypes
[hostap-gosc2009.git] / src / drivers / driver_bsd.c
blob2b8361899cf3cb7aadad11ee2d5640a92691ad4f
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, enum 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 char buf[2048];
605 struct if_announcemsghdr *ifan;
606 struct rt_msghdr *rtm;
607 struct ieee80211_michael_event *mic;
608 struct ieee80211_join_event *join;
609 struct ieee80211_leave_event *leave;
610 int n;
611 union wpa_event_data data;
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 os_memset(&data, 0, sizeof(data));
656 data.michael_mic_failure.unicast = 1;
657 data.michael_mic_failure.src = mic->iev_src;
658 wpa_supplicant_event(drv->hapd,
659 EVENT_MICHAEL_MIC_FAILURE, &data);
660 break;
661 }
662 break;
663 }
664 }
665
666 static int
667 bsd_wireless_event_init(struct bsd_driver_data *drv)
668 {
669 int s;
670
671 drv->wext_sock = -1;
672
673 s = socket(PF_ROUTE, SOCK_RAW, 0);
674 if (s < 0) {
675 perror("socket(PF_ROUTE,SOCK_RAW)");
676 return -1;
677 }
678 eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
679 drv->wext_sock = s;
680
681 return 0;
682 }
683
684 static void
685 bsd_wireless_event_deinit(struct bsd_driver_data *drv)
686 {
687 if (drv->wext_sock < 0)
688 return;
689 eloop_unregister_read_sock(drv->wext_sock);
690 close(drv->wext_sock);
691 }
692
693
694 static int
695 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
696 int encrypt, const u8 *own_addr)
697 {
698 struct bsd_driver_data *drv = priv;
699 unsigned char buf[3000];
700 unsigned char *bp = buf;
701 struct l2_ethhdr *eth;
702 size_t len;
703 int status;
704
705 /*
706 * Prepend the Etherent header. If the caller left us
707 * space at the front we could just insert it but since
708 * we don't know we copy to a local buffer. Given the frequency
709 * and size of frames this probably doesn't matter.
710 */
711 len = data_len + sizeof(struct l2_ethhdr);
712 if (len > sizeof(buf)) {
713 bp = malloc(len);
714 if (bp == NULL) {
715 printf("EAPOL frame discarded, cannot malloc temp "
716 "buffer of size %u!\n", (unsigned int) len);
717 return -1;
718 }
719 }
720 eth = (struct l2_ethhdr *) bp;
721 memcpy(eth->h_dest, addr, ETH_ALEN);
722 memcpy(eth->h_source, own_addr, ETH_ALEN);
723 eth->h_proto = htons(ETH_P_EAPOL);
724 memcpy(eth+1, data, data_len);
725
726 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
727
728 status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
729
730 if (bp != buf)
731 free(bp);
732 return status;
733 }
734
735 static void
736 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
737 {
738 struct bsd_driver_data *drv = ctx;
739 hostapd_eapol_receive(drv->hapd, src_addr,
740 buf + sizeof(struct l2_ethhdr),
741 len - sizeof(struct l2_ethhdr));
742 }
743
744 static int
745 hostapd_bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
746 {
747 struct bsd_driver_data *drv = priv;
748 int ssid_len;
749
750 ssid_len = bsd_get_ssid(drv->ioctl_sock, drv->iface, buf);
751 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
752
753 return ssid_len;
754 }
755
756 static int
757 hostapd_bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
758 {
759 struct bsd_driver_data *drv = priv;
760
761 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
762
763 return bsd_set_ssid(drv->ioctl_sock, drv->iface, buf, len);
764 }
765
766 static void *
767 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
768 {
769 struct bsd_driver_data *drv;
770
771 drv = os_zalloc(sizeof(struct bsd_driver_data));
772 if (drv == NULL) {
773 printf("Could not allocate memory for bsd driver data\n");
774 goto bad;
775 }
776
777 drv->hapd = hapd;
778 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
779 if (drv->ioctl_sock < 0) {
780 perror("socket[PF_INET,SOCK_DGRAM]");
781 goto bad;
782 }
783 memcpy(drv->iface, params->ifname, sizeof(drv->iface));
784
785 drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
786 handle_read, drv, 1);
787 if (drv->sock_xmit == NULL)
788 goto bad;
789 if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
790 goto bad;
791
792 bsd_set_iface_flags(drv, 0); /* mark down during setup */
793 if (bsd_wireless_event_init(drv))
794 goto bad;
795
796 return drv;
797 bad:
798 if (drv->sock_xmit != NULL)
799 l2_packet_deinit(drv->sock_xmit);
800 if (drv->ioctl_sock >= 0)
801 close(drv->ioctl_sock);
802 if (drv != NULL)
803 free(drv);
804 return NULL;
805 }
806
807
808 static void
809 bsd_deinit(void *priv)
810 {
811 struct bsd_driver_data *drv = priv;
812
813 bsd_wireless_event_deinit(drv);
814 (void) bsd_set_iface_flags(drv, 0);
815 if (drv->ioctl_sock >= 0)
816 close(drv->ioctl_sock);
817 if (drv->sock_xmit != NULL)
818 l2_packet_deinit(drv->sock_xmit);
819 free(drv);
820 }
821
822 const struct wpa_driver_ops wpa_driver_bsd_ops = {
823 .name = "bsd",
824 .hapd_init = bsd_init,
825 .hapd_deinit = bsd_deinit,
826 .set_ieee8021x = bsd_set_ieee8021x,
827 .set_privacy = bsd_set_privacy,
828 .set_key = bsd_set_key,
829 .get_seqnum = bsd_get_seqnum,
830 .flush = bsd_flush,
831 .set_generic_elem = bsd_set_opt_ie,
832 .sta_set_flags = bsd_sta_set_flags,
833 .read_sta_data = bsd_read_sta_driver_data,
834 .hapd_send_eapol = bsd_send_eapol,
835 .sta_disassoc = bsd_sta_disassoc,
836 .sta_deauth = bsd_sta_deauth,
837 .hapd_set_ssid = hostapd_bsd_set_ssid,
838 .hapd_get_ssid = hostapd_bsd_get_ssid,
839 };
840
841 #else /* HOSTAPD */
842
843 struct wpa_driver_bsd_data {
844 int sock; /* open socket for 802.11 ioctls */
845 int route; /* routing socket for events */
846 char ifname[IFNAMSIZ+1]; /* interface name */
847 unsigned int ifindex; /* interface index */
848 void *ctx;
849 int prev_roaming; /* roaming state to restore on deinit */
850 int prev_privacy; /* privacy state to restore on deinit */
851 int prev_wpa; /* wpa state to restore on deinit */
852 };
853
854 static int
855 set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
856 {
857 return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
858 }
859
860 static int
861 get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
862 {
863 return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
864 }
865
866 static int
867 set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
868 {
869 return bsd_set80211param(drv->sock, drv->ifname, op, arg);
870 }
871
872 static int
873 get80211param(struct wpa_driver_bsd_data *drv, int op)
874 {
875 struct ieee80211req ireq;
876
877 os_memset(&ireq, 0, sizeof(ireq));
878 os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
879 ireq.i_type = op;
880
881 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
882 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
883 op, strerror(errno));
884 return -1;
885 }
886 return ireq.i_val;
887 }
888
889 static int
890 getifflags(struct wpa_driver_bsd_data *drv, int *flags)
891 {
892 struct ifreq ifr;
893
894 os_memset(&ifr, 0, sizeof(ifr));
895 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
896 if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
897 perror("SIOCGIFFLAGS");
898 return errno;
899 }
900 *flags = ifr.ifr_flags & 0xffff;
901 return 0;
902 }
903
904 static int
905 setifflags(struct wpa_driver_bsd_data *drv, int flags)
906 {
907 struct ifreq ifr;
908
909 os_memset(&ifr, 0, sizeof(ifr));
910 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
911 ifr.ifr_flags = flags & 0xffff;
912 if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
913 perror("SIOCSIFFLAGS");
914 return errno;
915 }
916 return 0;
917 }
918
919 static int
920 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
921 {
922 struct wpa_driver_bsd_data *drv = priv;
923 #ifdef SIOCG80211BSSID
924 struct ieee80211_bssid bs;
925
926 os_strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
927 if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
928 return -1;
929 os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
930 return 0;
931 #else
932 return get80211var(drv, IEEE80211_IOC_BSSID,
933 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
934 #endif
935 }
936
937 #if 0
938 static int
939 wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
940 {
941 struct wpa_driver_bsd_data *drv = priv;
942
943 return set80211var(drv, IEEE80211_IOC_BSSID,
944 bssid, IEEE80211_ADDR_LEN);
945 }
946 #endif
947
948 static int
949 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
950 {
951 struct wpa_driver_bsd_data *drv = priv;
952
953 return bsd_get_ssid(drv->sock, drv->ifname, ssid);
954 }
955
956 static int
957 wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
958 size_t ssid_len)
959 {
960 struct wpa_driver_bsd_data *drv = priv;
961
962 return bsd_set_ssid(drv->sock, drv->ifname, ssid, ssid_len);
963 }
964
965 static int
966 wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
967 const u8 *wpa_ie, size_t wpa_ie_len)
968 {
969 return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
970 }
971
972 static int
973 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
974 {
975 struct wpa_driver_bsd_data *drv = priv;
976 int ret = 0;
977
978 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
979 __FUNCTION__, wpa, privacy);
980
981 if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
982 ret = -1;
983 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
984 ret = -1;
985 if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
986 ret = -1;
987
988 return ret;
989 }
990
991 static int
992 wpa_driver_bsd_set_wpa(void *priv, int enabled)
993 {
994 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
995
996 return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
997 }
998
999 static int
1000 wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
1001 const unsigned char *addr)
1002 {
1003 struct ieee80211req_del_key wk;
1004
1005 os_memset(&wk, 0, sizeof(wk));
1006 if (addr != NULL &&
1007 bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
1008 struct ether_addr ea;
1009
1010 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1011 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
1012 __func__, ether_ntoa(&ea), key_idx);
1013 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1014 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
1015 } else {
1016 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
1017 wk.idk_keyix = key_idx;
1018 }
1019 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
1020 }
1021
1022 static int
1023 wpa_driver_bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
1024 const unsigned char *addr, int key_idx, int set_tx,
1025 const u8 *seq, size_t seq_len,
1026 const u8 *key, size_t key_len)
1027 {
1028 struct wpa_driver_bsd_data *drv = priv;
1029 struct ieee80211req_key wk;
1030 struct ether_addr ea;
1031 char *alg_name;
1032 u_int8_t cipher;
1033
1034 if (alg == WPA_ALG_NONE)
1035 return wpa_driver_bsd_del_key(drv, key_idx, addr);
1036
1037 switch (alg) {
1038 case WPA_ALG_WEP:
1039 alg_name = "WEP";
1040 cipher = IEEE80211_CIPHER_WEP;
1041 break;
1042 case WPA_ALG_TKIP:
1043 alg_name = "TKIP";
1044 cipher = IEEE80211_CIPHER_TKIP;
1045 break;
1046 case WPA_ALG_CCMP:
1047 alg_name = "CCMP";
1048 cipher = IEEE80211_CIPHER_AES_CCM;
1049 break;
1050 default:
1051 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1052 __func__, alg);
1053 return -1;
1054 }
1055
1056 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1057 wpa_printf(MSG_DEBUG,
1058 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
1059 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
1060 seq_len, key_len);
1061
1062 if (seq_len > sizeof(u_int64_t)) {
1063 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
1064 __func__, seq_len);
1065 return -2;
1066 }
1067 if (key_len > sizeof(wk.ik_keydata)) {
1068 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
1069 __func__, key_len);
1070 return -3;
1071 }
1072
1073 os_memset(&wk, 0, sizeof(wk));
1074 wk.ik_type = cipher;
1075 wk.ik_flags = IEEE80211_KEY_RECV;
1076 if (set_tx)
1077 wk.ik_flags |= IEEE80211_KEY_XMIT;
1078 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1079 /*
1080 * Deduce whether group/global or unicast key by checking
1081 * the address (yech). Note also that we can only mark global
1082 * keys default; doing this for a unicast key is an error.
1083 */
1084 if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
1085 wk.ik_flags |= IEEE80211_KEY_GROUP;
1086 wk.ik_keyix = key_idx;
1087 } else {
1088 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
1089 }
1090 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
1091 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
1092 wk.ik_keylen = key_len;
1093 os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1094 os_memcpy(wk.ik_keydata, key, key_len);
1095
1096 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
1097 }
1098
1099 static int
1100 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1101 {
1102 struct wpa_driver_bsd_data *drv = priv;
1103
1104 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1105 return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1106 }
1107
1108
1109 static int
1110 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1111 {
1112 struct wpa_driver_bsd_data *drv = priv;
1113
1114 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1115 return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1116 }
1117
1118 static int
1119 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1120 {
1121 struct wpa_driver_bsd_data *drv = priv;
1122 struct ieee80211req_mlme mlme;
1123
1124 wpa_printf(MSG_DEBUG, "%s", __func__);
1125 os_memset(&mlme, 0, sizeof(mlme));
1126 mlme.im_op = IEEE80211_MLME_DEAUTH;
1127 mlme.im_reason = reason_code;
1128 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1129 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1130 }
1131
1132 static int
1133 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
1134 {
1135 struct wpa_driver_bsd_data *drv = priv;
1136 struct ieee80211req_mlme mlme;
1137
1138 wpa_printf(MSG_DEBUG, "%s", __func__);
1139 os_memset(&mlme, 0, sizeof(mlme));
1140 mlme.im_op = IEEE80211_MLME_DISASSOC;
1141 mlme.im_reason = reason_code;
1142 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1143 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1144 }
1145
1146 static int
1147 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1148 {
1149 struct wpa_driver_bsd_data *drv = priv;
1150 int authmode;
1151
1152 if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1153 (auth_alg & AUTH_ALG_SHARED_KEY))
1154 authmode = IEEE80211_AUTH_AUTO;
1155 else if (auth_alg & AUTH_ALG_SHARED_KEY)
1156 authmode = IEEE80211_AUTH_SHARED;
1157 else
1158 authmode = IEEE80211_AUTH_OPEN;
1159
1160 return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1161 }
1162
1163 static int
1164 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1165 {
1166 struct wpa_driver_bsd_data *drv = priv;
1167 struct ieee80211req_mlme mlme;
1168 int privacy;
1169 int ret = 0;
1170
1171 wpa_printf(MSG_DEBUG,
1172 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1173 , __func__
1174 , (unsigned int) params->ssid_len, params->ssid
1175 , (unsigned int) params->wpa_ie_len
1176 , params->pairwise_suite
1177 , params->group_suite
1178 , params->key_mgmt_suite
1179 );
1180
1181 if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1182 < 0)
1183 ret = -1;
1184 if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1185 ret = -1;
1186 /* XXX error handling is wrong but unclear what to do... */
1187 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1188 return -1;
1189
1190 privacy = !(params->pairwise_suite == CIPHER_NONE &&
1191 params->group_suite == CIPHER_NONE &&
1192 params->key_mgmt_suite == KEY_MGMT_NONE &&
1193 params->wpa_ie_len == 0);
1194 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1195
1196 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1197 return -1;
1198
1199 if (params->wpa_ie_len &&
1200 set80211param(drv, IEEE80211_IOC_WPA,
1201 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1202 return -1;
1203
1204 os_memset(&mlme, 0, sizeof(mlme));
1205 mlme.im_op = IEEE80211_MLME_ASSOC;
1206 if (params->ssid != NULL)
1207 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1208 mlme.im_ssid_len = params->ssid_len;
1209 if (params->bssid != NULL)
1210 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1211 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1212 return -1;
1213 return ret;
1214 }
1215
1216 static int
1217 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1218 {
1219 struct wpa_driver_bsd_data *drv = priv;
1220 int flags;
1221 const u8 *ssid = params->ssids[0].ssid;
1222 size_t ssid_len = params->ssids[0].ssid_len;
1223
1224 /* NB: interface must be marked UP to do a scan */
1225 if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1226 return -1;
1227
1228 /* set desired ssid before scan */
1229 if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1230 return -1;
1231
1232 /* NB: net80211 delivers a scan complete event so no need to poll */
1233 return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1234 }
1235
1236 static void
1237 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1238 {
1239 struct wpa_driver_bsd_data *drv = sock_ctx;
1240 char buf[2048];
1241 struct if_announcemsghdr *ifan;
1242 struct if_msghdr *ifm;
1243 struct rt_msghdr *rtm;
1244 union wpa_event_data event;
1245 struct ieee80211_michael_event *mic;
1246 int n;
1247
1248 n = read(sock, buf, sizeof(buf));
1249 if (n < 0) {
1250 if (errno != EINTR && errno != EAGAIN)
1251 perror("read(PF_ROUTE)");
1252 return;
1253 }
1254
1255 rtm = (struct rt_msghdr *) buf;
1256 if (rtm->rtm_version != RTM_VERSION) {
1257 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1258 "understood\n", rtm->rtm_version);
1259 return;
1260 }
1261 os_memset(&event, 0, sizeof(event));
1262 switch (rtm->rtm_type) {
1263 case RTM_IFANNOUNCE:
1264 ifan = (struct if_announcemsghdr *) rtm;
1265 if (ifan->ifan_index != drv->ifindex)
1266 break;
1267 strlcpy(event.interface_status.ifname, drv->ifname,
1268 sizeof(event.interface_status.ifname));
1269 switch (ifan->ifan_what) {
1270 case IFAN_DEPARTURE:
1271 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1272 default:
1273 return;
1274 }
1275 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1276 event.interface_status.ifname,
1277 ifan->ifan_what == IFAN_DEPARTURE ?
1278 "removed" : "added");
1279 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1280 break;
1281 case RTM_IEEE80211:
1282 ifan = (struct if_announcemsghdr *) rtm;
1283 if (ifan->ifan_index != drv->ifindex)
1284 break;
1285 switch (ifan->ifan_what) {
1286 case RTM_IEEE80211_ASSOC:
1287 case RTM_IEEE80211_REASSOC:
1288 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1289 break;
1290 case RTM_IEEE80211_DISASSOC:
1291 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1292 break;
1293 case RTM_IEEE80211_SCAN:
1294 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1295 break;
1296 case RTM_IEEE80211_REPLAY:
1297 /* ignore */
1298 break;
1299 case RTM_IEEE80211_MICHAEL:
1300 mic = (struct ieee80211_michael_event *) &ifan[1];
1301 wpa_printf(MSG_DEBUG,
1302 "Michael MIC failure wireless event: "
1303 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1304 MAC2STR(mic->iev_src));
1305
1306 os_memset(&event, 0, sizeof(event));
1307 event.michael_mic_failure.unicast =
1308 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1309 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1310 &event);
1311 break;
1312 }
1313 break;
1314 case RTM_IFINFO:
1315 ifm = (struct if_msghdr *) rtm;
1316 if (ifm->ifm_index != drv->ifindex)
1317 break;
1318 if ((rtm->rtm_flags & RTF_UP) == 0) {
1319 strlcpy(event.interface_status.ifname, drv->ifname,
1320 sizeof(event.interface_status.ifname));
1321 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1322 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1323 event.interface_status.ifname);
1324 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1325 }
1326 break;
1327 }
1328 }
1329
1330 static void
1331 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1332 struct ieee80211req_scan_result *sr)
1333 {
1334 struct wpa_scan_res *result, **tmp;
1335 size_t extra_len;
1336 u8 *pos;
1337
1338 extra_len = 2 + sr->isr_ssid_len;
1339 extra_len += 2 + sr->isr_nrates;
1340 extra_len += 3; /* ERP IE */
1341 extra_len += sr->isr_ie_len;
1342
1343 result = os_zalloc(sizeof(*result) + extra_len);
1344 if (result == NULL)
1345 return;
1346 os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1347 result->freq = sr->isr_freq;
1348 result->beacon_int = sr->isr_intval;
1349 result->caps = sr->isr_capinfo;
1350 result->qual = sr->isr_rssi;
1351 result->noise = sr->isr_noise;
1352
1353 pos = (u8 *)(result + 1);
1354
1355 *pos++ = WLAN_EID_SSID;
1356 *pos++ = sr->isr_ssid_len;
1357 os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1358 pos += sr->isr_ssid_len;
1359
1360 /*
1361 * Deal all rates as supported rate.
1362 * Because net80211 doesn't report extended supported rate or not.
1363 */
1364 *pos++ = WLAN_EID_SUPP_RATES;
1365 *pos++ = sr->isr_nrates;
1366 os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1367 pos += sr->isr_nrates;
1368
1369 *pos++ = WLAN_EID_ERP_INFO;
1370 *pos++ = 1;
1371 *pos++ = sr->isr_erp;
1372
1373 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1374 pos += sr->isr_ie_len;
1375
1376 result->ie_len = pos - (u8 *)(result + 1);
1377
1378 tmp = os_realloc(res->res,
1379 (res->num + 1) * sizeof(struct wpa_scan_res *));
1380 if (tmp == NULL) {
1381 os_free(result);
1382 return;
1383 }
1384 tmp[res->num++] = result;
1385 res->res = tmp;
1386 }
1387
1388 struct wpa_scan_results *
1389 wpa_driver_bsd_get_scan_results2(void *priv)
1390 {
1391 struct wpa_driver_bsd_data *drv = priv;
1392 struct ieee80211req_scan_result *sr;
1393 struct wpa_scan_results *res;
1394 int len, rest;
1395 uint8_t buf[24*1024], *pos;
1396
1397 len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1398 if (len < 0)
1399 return NULL;
1400
1401 res = os_zalloc(sizeof(*res));
1402 if (res == NULL)
1403 return NULL;
1404
1405 pos = buf;
1406 rest = len;
1407 while (rest >= sizeof(struct ieee80211req_scan_result)) {
1408 sr = (struct ieee80211req_scan_result *)pos;
1409 wpa_driver_bsd_add_scan_entry(res, sr);
1410 pos += sr->isr_len;
1411 rest -= sr->isr_len;
1412 }
1413
1414 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1415 len, (unsigned long)res->num);
1416
1417 return res;
1418 }
1419
1420 static void *
1421 wpa_driver_bsd_init(void *ctx, const char *ifname)
1422 {
1423 #define GETPARAM(drv, param, v) \
1424 (((v) = get80211param(drv, param)) != -1)
1425 struct wpa_driver_bsd_data *drv;
1426
1427 drv = os_zalloc(sizeof(*drv));
1428 if (drv == NULL)
1429 return NULL;
1430 /*
1431 * NB: We require the interface name be mappable to an index.
1432 * This implies we do not support having wpa_supplicant
1433 * wait for an interface to appear. This seems ok; that
1434 * doesn't belong here; it's really the job of devd.
1435 */
1436 drv->ifindex = if_nametoindex(ifname);
1437 if (drv->ifindex == 0) {
1438 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1439 __func__, ifname);
1440 goto fail1;
1441 }
1442 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1443 if (drv->sock < 0)
1444 goto fail1;
1445 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1446 if (drv->route < 0)
1447 goto fail;
1448 eloop_register_read_sock(drv->route,
1449 wpa_driver_bsd_event_receive, ctx, drv);
1450
1451 drv->ctx = ctx;
1452 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1453
1454 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1455 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1456 __func__, strerror(errno));
1457 goto fail;
1458 }
1459 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1460 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1461 __func__, strerror(errno));
1462 goto fail;
1463 }
1464 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1465 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1466 __func__, strerror(errno));
1467 goto fail;
1468 }
1469 if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1470 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1471 "roaming: %s", __func__, strerror(errno));
1472 goto fail;
1473 }
1474
1475 if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1476 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1477 __func__, strerror(errno));
1478 goto fail;
1479 }
1480
1481 wpa_driver_bsd_set_wpa(drv, 1);
1482
1483 return drv;
1484 fail:
1485 close(drv->sock);
1486 fail1:
1487 os_free(drv);
1488 return NULL;
1489 #undef GETPARAM
1490 }
1491
1492 static void
1493 wpa_driver_bsd_deinit(void *priv)
1494 {
1495 struct wpa_driver_bsd_data *drv = priv;
1496 int flags;
1497
1498 wpa_driver_bsd_set_wpa(drv, 0);
1499 eloop_unregister_read_sock(drv->route);
1500
1501 /* NB: mark interface down */
1502 if (getifflags(drv, &flags) == 0)
1503 (void) setifflags(drv, flags &~ IFF_UP);
1504
1505 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1506 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1507 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1508 __func__);
1509
1510 (void) close(drv->route); /* ioctl socket */
1511 (void) close(drv->sock); /* event socket */
1512 os_free(drv);
1513 }
1514
1515
1516 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1517 .name = "bsd",
1518 .desc = "BSD 802.11 support",
1519 .init = wpa_driver_bsd_init,
1520 .deinit = wpa_driver_bsd_deinit,
1521 .get_bssid = wpa_driver_bsd_get_bssid,
1522 .get_ssid = wpa_driver_bsd_get_ssid,
1523 .set_key = wpa_driver_bsd_set_key,
1524 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
1525 .scan2 = wpa_driver_bsd_scan,
1526 .get_scan_results2 = wpa_driver_bsd_get_scan_results2,
1527 .deauthenticate = wpa_driver_bsd_deauthenticate,
1528 .disassociate = wpa_driver_bsd_disassociate,
1529 .associate = wpa_driver_bsd_associate,
1530 };
1531
1532 #endif /* HOSTAPD */