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Use generic driver event notification for AP mode assoc/disassoc
[hostap-gosc2009.git] / src / drivers / driver_bsd.c
blobab01370c952f7b8cd106ab224d751c9d713452ac
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 void
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 drv_event_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 drv_event_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 union wpa_event_data event;
740 os_memset(&event, 0, sizeof(event));
741 event.eapol_rx.src = src_addr;
742 event.eapol_rx.data = buf + sizeof(struct l2_ethhdr);
743 event.eapol_rx.data_len = len - sizeof(struct l2_ethhdr);
744 wpa_supplicant_event(drv->hapd, EVENT_EAPOL_RX, &event);
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, enum 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_set_auth_alg(void *priv, int auth_alg)
1151 {
1152 struct wpa_driver_bsd_data *drv = priv;
1153 int authmode;
1154
1155 if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1156 (auth_alg & AUTH_ALG_SHARED_KEY))
1157 authmode = IEEE80211_AUTH_AUTO;
1158 else if (auth_alg & AUTH_ALG_SHARED_KEY)
1159 authmode = IEEE80211_AUTH_SHARED;
1160 else
1161 authmode = IEEE80211_AUTH_OPEN;
1162
1163 return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1164 }
1165
1166 static int
1167 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1168 {
1169 struct wpa_driver_bsd_data *drv = priv;
1170 struct ieee80211req_mlme mlme;
1171 int privacy;
1172 int ret = 0;
1173
1174 wpa_printf(MSG_DEBUG,
1175 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1176 , __func__
1177 , (unsigned int) params->ssid_len, params->ssid
1178 , (unsigned int) params->wpa_ie_len
1179 , params->pairwise_suite
1180 , params->group_suite
1181 , params->key_mgmt_suite
1182 );
1183
1184 if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1185 < 0)
1186 ret = -1;
1187 if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1188 ret = -1;
1189 /* XXX error handling is wrong but unclear what to do... */
1190 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1191 return -1;
1192
1193 privacy = !(params->pairwise_suite == CIPHER_NONE &&
1194 params->group_suite == CIPHER_NONE &&
1195 params->key_mgmt_suite == KEY_MGMT_NONE &&
1196 params->wpa_ie_len == 0);
1197 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1198
1199 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1200 return -1;
1201
1202 if (params->wpa_ie_len &&
1203 set80211param(drv, IEEE80211_IOC_WPA,
1204 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1205 return -1;
1206
1207 os_memset(&mlme, 0, sizeof(mlme));
1208 mlme.im_op = IEEE80211_MLME_ASSOC;
1209 if (params->ssid != NULL)
1210 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1211 mlme.im_ssid_len = params->ssid_len;
1212 if (params->bssid != NULL)
1213 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1214 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1215 return -1;
1216 return ret;
1217 }
1218
1219 static int
1220 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1221 {
1222 struct wpa_driver_bsd_data *drv = priv;
1223 int flags;
1224 const u8 *ssid = params->ssids[0].ssid;
1225 size_t ssid_len = params->ssids[0].ssid_len;
1226
1227 /* NB: interface must be marked UP to do a scan */
1228 if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1229 return -1;
1230
1231 /* set desired ssid before scan */
1232 if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1233 return -1;
1234
1235 /* NB: net80211 delivers a scan complete event so no need to poll */
1236 return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1237 }
1238
1239 static void
1240 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1241 {
1242 struct wpa_driver_bsd_data *drv = sock_ctx;
1243 char buf[2048];
1244 struct if_announcemsghdr *ifan;
1245 struct if_msghdr *ifm;
1246 struct rt_msghdr *rtm;
1247 union wpa_event_data event;
1248 struct ieee80211_michael_event *mic;
1249 int n;
1250
1251 n = read(sock, buf, sizeof(buf));
1252 if (n < 0) {
1253 if (errno != EINTR && errno != EAGAIN)
1254 perror("read(PF_ROUTE)");
1255 return;
1256 }
1257
1258 rtm = (struct rt_msghdr *) buf;
1259 if (rtm->rtm_version != RTM_VERSION) {
1260 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1261 "understood\n", rtm->rtm_version);
1262 return;
1263 }
1264 os_memset(&event, 0, sizeof(event));
1265 switch (rtm->rtm_type) {
1266 case RTM_IFANNOUNCE:
1267 ifan = (struct if_announcemsghdr *) rtm;
1268 if (ifan->ifan_index != drv->ifindex)
1269 break;
1270 strlcpy(event.interface_status.ifname, drv->ifname,
1271 sizeof(event.interface_status.ifname));
1272 switch (ifan->ifan_what) {
1273 case IFAN_DEPARTURE:
1274 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1275 default:
1276 return;
1277 }
1278 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1279 event.interface_status.ifname,
1280 ifan->ifan_what == IFAN_DEPARTURE ?
1281 "removed" : "added");
1282 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1283 break;
1284 case RTM_IEEE80211:
1285 ifan = (struct if_announcemsghdr *) rtm;
1286 if (ifan->ifan_index != drv->ifindex)
1287 break;
1288 switch (ifan->ifan_what) {
1289 case RTM_IEEE80211_ASSOC:
1290 case RTM_IEEE80211_REASSOC:
1291 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1292 break;
1293 case RTM_IEEE80211_DISASSOC:
1294 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1295 break;
1296 case RTM_IEEE80211_SCAN:
1297 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1298 break;
1299 case RTM_IEEE80211_REPLAY:
1300 /* ignore */
1301 break;
1302 case RTM_IEEE80211_MICHAEL:
1303 mic = (struct ieee80211_michael_event *) &ifan[1];
1304 wpa_printf(MSG_DEBUG,
1305 "Michael MIC failure wireless event: "
1306 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1307 MAC2STR(mic->iev_src));
1308
1309 os_memset(&event, 0, sizeof(event));
1310 event.michael_mic_failure.unicast =
1311 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1312 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1313 &event);
1314 break;
1315 }
1316 break;
1317 case RTM_IFINFO:
1318 ifm = (struct if_msghdr *) rtm;
1319 if (ifm->ifm_index != drv->ifindex)
1320 break;
1321 if ((rtm->rtm_flags & RTF_UP) == 0) {
1322 strlcpy(event.interface_status.ifname, drv->ifname,
1323 sizeof(event.interface_status.ifname));
1324 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1325 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1326 event.interface_status.ifname);
1327 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1328 }
1329 break;
1330 }
1331 }
1332
1333 static void
1334 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1335 struct ieee80211req_scan_result *sr)
1336 {
1337 struct wpa_scan_res *result, **tmp;
1338 size_t extra_len;
1339 u8 *pos;
1340
1341 extra_len = 2 + sr->isr_ssid_len;
1342 extra_len += 2 + sr->isr_nrates;
1343 extra_len += 3; /* ERP IE */
1344 extra_len += sr->isr_ie_len;
1345
1346 result = os_zalloc(sizeof(*result) + extra_len);
1347 if (result == NULL)
1348 return;
1349 os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1350 result->freq = sr->isr_freq;
1351 result->beacon_int = sr->isr_intval;
1352 result->caps = sr->isr_capinfo;
1353 result->qual = sr->isr_rssi;
1354 result->noise = sr->isr_noise;
1355
1356 pos = (u8 *)(result + 1);
1357
1358 *pos++ = WLAN_EID_SSID;
1359 *pos++ = sr->isr_ssid_len;
1360 os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1361 pos += sr->isr_ssid_len;
1362
1363 /*
1364 * Deal all rates as supported rate.
1365 * Because net80211 doesn't report extended supported rate or not.
1366 */
1367 *pos++ = WLAN_EID_SUPP_RATES;
1368 *pos++ = sr->isr_nrates;
1369 os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1370 pos += sr->isr_nrates;
1371
1372 *pos++ = WLAN_EID_ERP_INFO;
1373 *pos++ = 1;
1374 *pos++ = sr->isr_erp;
1375
1376 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1377 pos += sr->isr_ie_len;
1378
1379 result->ie_len = pos - (u8 *)(result + 1);
1380
1381 tmp = os_realloc(res->res,
1382 (res->num + 1) * sizeof(struct wpa_scan_res *));
1383 if (tmp == NULL) {
1384 os_free(result);
1385 return;
1386 }
1387 tmp[res->num++] = result;
1388 res->res = tmp;
1389 }
1390
1391 struct wpa_scan_results *
1392 wpa_driver_bsd_get_scan_results2(void *priv)
1393 {
1394 struct wpa_driver_bsd_data *drv = priv;
1395 struct ieee80211req_scan_result *sr;
1396 struct wpa_scan_results *res;
1397 int len, rest;
1398 uint8_t buf[24*1024], *pos;
1399
1400 len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1401 if (len < 0)
1402 return NULL;
1403
1404 res = os_zalloc(sizeof(*res));
1405 if (res == NULL)
1406 return NULL;
1407
1408 pos = buf;
1409 rest = len;
1410 while (rest >= sizeof(struct ieee80211req_scan_result)) {
1411 sr = (struct ieee80211req_scan_result *)pos;
1412 wpa_driver_bsd_add_scan_entry(res, sr);
1413 pos += sr->isr_len;
1414 rest -= sr->isr_len;
1415 }
1416
1417 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1418 len, (unsigned long)res->num);
1419
1420 return res;
1421 }
1422
1423 static void *
1424 wpa_driver_bsd_init(void *ctx, const char *ifname)
1425 {
1426 #define GETPARAM(drv, param, v) \
1427 (((v) = get80211param(drv, param)) != -1)
1428 struct wpa_driver_bsd_data *drv;
1429
1430 drv = os_zalloc(sizeof(*drv));
1431 if (drv == NULL)
1432 return NULL;
1433 /*
1434 * NB: We require the interface name be mappable to an index.
1435 * This implies we do not support having wpa_supplicant
1436 * wait for an interface to appear. This seems ok; that
1437 * doesn't belong here; it's really the job of devd.
1438 */
1439 drv->ifindex = if_nametoindex(ifname);
1440 if (drv->ifindex == 0) {
1441 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1442 __func__, ifname);
1443 goto fail1;
1444 }
1445 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1446 if (drv->sock < 0)
1447 goto fail1;
1448 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1449 if (drv->route < 0)
1450 goto fail;
1451 eloop_register_read_sock(drv->route,
1452 wpa_driver_bsd_event_receive, ctx, drv);
1453
1454 drv->ctx = ctx;
1455 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1456
1457 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1458 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1459 __func__, strerror(errno));
1460 goto fail;
1461 }
1462 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1463 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1464 __func__, strerror(errno));
1465 goto fail;
1466 }
1467 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1468 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1469 __func__, strerror(errno));
1470 goto fail;
1471 }
1472 if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1473 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1474 "roaming: %s", __func__, strerror(errno));
1475 goto fail;
1476 }
1477
1478 if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1479 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1480 __func__, strerror(errno));
1481 goto fail;
1482 }
1483
1484 wpa_driver_bsd_set_wpa(drv, 1);
1485
1486 return drv;
1487 fail:
1488 close(drv->sock);
1489 fail1:
1490 os_free(drv);
1491 return NULL;
1492 #undef GETPARAM
1493 }
1494
1495 static void
1496 wpa_driver_bsd_deinit(void *priv)
1497 {
1498 struct wpa_driver_bsd_data *drv = priv;
1499 int flags;
1500
1501 wpa_driver_bsd_set_wpa(drv, 0);
1502 eloop_unregister_read_sock(drv->route);
1503
1504 /* NB: mark interface down */
1505 if (getifflags(drv, &flags) == 0)
1506 (void) setifflags(drv, flags &~ IFF_UP);
1507
1508 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1509 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1510 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1511 __func__);
1512
1513 (void) close(drv->route); /* ioctl socket */
1514 (void) close(drv->sock); /* event socket */
1515 os_free(drv);
1516 }
1517
1518
1519 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1520 .name = "bsd",
1521 .desc = "BSD 802.11 support",
1522 .init = wpa_driver_bsd_init,
1523 .deinit = wpa_driver_bsd_deinit,
1524 .get_bssid = wpa_driver_bsd_get_bssid,
1525 .get_ssid = wpa_driver_bsd_get_ssid,
1526 .set_key = wpa_driver_bsd_set_key,
1527 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
1528 .scan2 = wpa_driver_bsd_scan,
1529 .get_scan_results2 = wpa_driver_bsd_get_scan_results2,
1530 .deauthenticate = wpa_driver_bsd_deauthenticate,
1531 .disassociate = wpa_driver_bsd_disassociate,
1532 .associate = wpa_driver_bsd_associate,
1533 };
1534
1535 #endif /* HOSTAPD */