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nl80211: Work around mac80211 limitation on (re)auth when authenticated
[thirdparty/hostap.git] / src / drivers / driver_bsd.c
CommitLineData
6fc6879b
JM		 1/*
2 * WPA Supplicant - driver interaction with BSD net80211 layer
3 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
c5121837 4 * Copyright (c) 2004, 2Wire, Inc
6fc6879b
JM		 5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * Alternatively, this software may be distributed under the terms of BSD
11 * license.
12 *
13 * See README and COPYING for more details.
14 */
15
16#include "includes.h"
17#include <sys/ioctl.h>
18
19#include "common.h"
20#include "driver.h"
21#include "eloop.h"
22#include "ieee802_11_defs.h"
23
24#include <net/if.h>
898d6921
JR		 25
26#ifdef __NetBSD__
27#include <net/if_ether.h>
898d6921 28#else
6fc6879b 29#include <net/ethernet.h>
898d6921 30#endif
131289d8 31#include <net/route.h>
6fc6879b
JM		 32
33#include <net80211/ieee80211.h>
34#include <net80211/ieee80211_crypto.h>
35#include <net80211/ieee80211_ioctl.h>
131289d8
MH		 36#if __FreeBSD__
37#include <net80211/ieee80211_freebsd.h>
38#endif
39#if __NetBSD__
40#include <net80211/ieee80211_netbsd.h>
41#endif
42
66d4085f
RM		 43/* Generic functions for hostapd and wpa_supplicant */
44
45static int
46bsd_set80211var(int s, const char *ifname, int op, const void *arg, int arg_len)
47{
48 struct ieee80211req ireq;
49
50 os_memset(&ireq, 0, sizeof(ireq));
51 os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
52 ireq.i_type = op;
53 ireq.i_len = arg_len;
54 ireq.i_data = (void *) arg;
55
56 if (ioctl(s, SIOCS80211, &ireq) < 0) {
57 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
58 op, arg_len, strerror(errno));
59 return -1;
60 }
61 return 0;
62}
63
64static int
65bsd_get80211var(int s, const char *ifname, int op, void *arg, int arg_len)
66{
67 struct ieee80211req ireq;
68
69 os_memset(&ireq, 0, sizeof(ireq));
70 os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
71 ireq.i_type = op;
72 ireq.i_len = arg_len;
73 ireq.i_data = arg;
74
75 if (ioctl(s, SIOCG80211, &ireq) < 0) {
76 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
77 op, arg_len, strerror(errno));
78 return -1;
79 }
80 return ireq.i_len;
81}
82
83static int
84bsd_set80211param(int s, const char *ifname, int op, int arg)
85{
86 struct ieee80211req ireq;
87
88 os_memset(&ireq, 0, sizeof(ireq));
89 os_strlcpy(ireq.i_name, ifname, sizeof(ireq.i_name));
90 ireq.i_type = op;
91 ireq.i_val = arg;
92
93 if (ioctl(s, SIOCS80211, &ireq) < 0) {
94 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
95 op, arg, strerror(errno));
96 return -1;
97 }
98 return 0;
99}
100
101static int
102bsd_get_ssid(int s, const char *ifname, u8 *ssid)
103{
104#ifdef SIOCG80211NWID
105 struct ieee80211_nwid nwid;
106 struct ifreq ifr;
107
108 os_memset(&ifr, 0, sizeof(ifr));
109 os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
110 ifr.ifr_data = (void *)&nwid;
111 if (ioctl(s, SIOCG80211NWID, &ifr) < 0 ||
112 nwid.i_len > IEEE80211_NWID_LEN)
113 return -1;
114 os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
115 return nwid.i_len;
116#else
117 return bsd_get80211var(s, ifname, IEEE80211_IOC_SSID,
118 ssid, IEEE80211_NWID_LEN);
119#endif
120}
121
122static int
123bsd_set_ssid(int s, const char *ifname, const u8 *ssid, size_t ssid_len)
124{
125#ifdef SIOCS80211NWID
126 struct ieee80211_nwid nwid;
127 struct ifreq ifr;
128
129 os_memcpy(nwid.i_nwid, ssid, ssid_len);
130 nwid.i_len = ssid_len;
131 os_memset(&ifr, 0, sizeof(ifr));
132 os_strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
133 ifr.ifr_data = (void *)&nwid;
134 return ioctl(s, SIOCS80211NWID, &ifr);
135#else
136 return bsd_set80211var(s, ifname, IEEE80211_IOC_SSID, ssid, ssid_len);
137#endif
138}
139
140
131289d8 141#ifdef HOSTAPD
6fc6879b 142
c5121837
JM		 143/*
144 * Avoid conflicts with hostapd definitions by undefining couple of defines
145 * from net80211 header files.
146 */
147#undef RSN_VERSION
148#undef WPA_VERSION
149#undef WPA_OUI_TYPE
150
c5121837
JM		 151#include "l2_packet/l2_packet.h"
152#include "../../hostapd/hostapd.h"
153#include "../../hostapd/config.h"
154#include "../../hostapd/eapol_sm.h"
131289d8 155#include "../../hostapd/sta_flags.h"
c5121837
JM		 156
157struct bsd_driver_data {
158 struct hostapd_data *hapd; /* back pointer */
159
160 char iface[IFNAMSIZ + 1];
161 struct l2_packet_data *sock_xmit; /* raw packet xmit socket */
162 int ioctl_sock; /* socket for ioctl() use */
163 int wext_sock; /* socket for wireless events */
164};
165
731723a5
JM		 166static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
167 int reason_code);
c5121837
JM		 168
169static int
170set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
171{
66d4085f 172 return bsd_set80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
c5121837
JM		 173}
174
175static int
176get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
177{
66d4085f 178 return bsd_get80211var(drv->ioctl_sock, drv->iface, op, arg, arg_len);
c5121837
JM		 179}
180
181static int
182set80211param(struct bsd_driver_data *drv, int op, int arg)
183{
66d4085f 184 return bsd_set80211param(drv->ioctl_sock, drv->iface, op, arg);
c5121837
JM		 185}
186
187static const char *
188ether_sprintf(const u8 *addr)
189{
190 static char buf[sizeof(MACSTR)];
191
192 if (addr != NULL)
193 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
194 else
195 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
196 return buf;
197}
198
199/*
200 * Configure WPA parameters.
201 */
202static int
203bsd_configure_wpa(struct bsd_driver_data *drv)
204{
205 static const char *ciphernames[] =
206 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
207 struct hostapd_data *hapd = drv->hapd;
208 struct hostapd_bss_config *conf = hapd->conf;
209 int v;
210
211 switch (conf->wpa_group) {
212 case WPA_CIPHER_CCMP:
213 v = IEEE80211_CIPHER_AES_CCM;
214 break;
215 case WPA_CIPHER_TKIP:
216 v = IEEE80211_CIPHER_TKIP;
217 break;
218 case WPA_CIPHER_WEP104:
219 v = IEEE80211_CIPHER_WEP;
220 break;
221 case WPA_CIPHER_WEP40:
222 v = IEEE80211_CIPHER_WEP;
223 break;
224 case WPA_CIPHER_NONE:
225 v = IEEE80211_CIPHER_NONE;
226 break;
227 default:
228 printf("Unknown group key cipher %u\n",
229 conf->wpa_group);
230 return -1;
231 }
232 wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
233 __func__, ciphernames[v], v);
234 if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
235 printf("Unable to set group key cipher to %u (%s)\n",
236 v, ciphernames[v]);
237 return -1;
238 }
239 if (v == IEEE80211_CIPHER_WEP) {
240 /* key length is done only for specific ciphers */
241 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
242 if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
243 printf("Unable to set group key length to %u\n", v);
244 return -1;
245 }
246 }
247
248 v = 0;
249 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
250 v |= 1<<IEEE80211_CIPHER_AES_CCM;
251 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
252 v |= 1<<IEEE80211_CIPHER_TKIP;
253 if (conf->wpa_pairwise & WPA_CIPHER_NONE)
254 v |= 1<<IEEE80211_CIPHER_NONE;
255 wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
256 if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
257 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
258 return -1;
259 }
260
261 wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
262 __func__, conf->wpa_key_mgmt);
263 if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, conf->wpa_key_mgmt)) {
264 printf("Unable to set key management algorithms to 0x%x\n",
265 conf->wpa_key_mgmt);
266 return -1;
267 }
268
269 v = 0;
270 if (conf->rsn_preauth)
271 v |= BIT(0);
272 wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
273 __func__, conf->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__, conf->wpa);
280 if (set80211param(drv, IEEE80211_IOC_WPA, conf->wpa)) {
281 printf("Unable to set WPA to %u\n", conf->wpa);
282 return -1;
283 }
284 return 0;
285}
286
287
288static int
289bsd_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));
66d4085f 300 os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
c5121837
JM		 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 if (dev_up) {
318 memset(&ifr, 0, sizeof(ifr));
66d4085f 319 os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
c5121837
JM		 320 ifr.ifr_mtu = HOSTAPD_MTU;
321 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
322 perror("ioctl[SIOCSIFMTU]");
323 printf("Setting MTU failed - trying to survive with "
324 "current value\n");
325 }
326 }
327
328 return 0;
329}
330
331static int
332bsd_set_ieee8021x(const char *ifname, void *priv, int enabled)
333{
334 struct bsd_driver_data *drv = priv;
335 struct hostapd_data *hapd = drv->hapd;
336 struct hostapd_bss_config *conf = hapd->conf;
337
338 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
339
340 if (!enabled) {
341 /* XXX restore state */
342 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
343 IEEE80211_AUTH_AUTO);
344 }
345 if (!conf->wpa && !conf->ieee802_1x) {
346 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
347 HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
348 return -1;
349 }
350 if (conf->wpa && bsd_configure_wpa(drv) != 0) {
351 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
352 HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
353 return -1;
354 }
355 if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
356 (conf->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
357 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
358 HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
359 return -1;
360 }
361 return bsd_set_iface_flags(priv, 1);
362}
363
364static int
365bsd_set_privacy(const char *ifname, void *priv, int enabled)
366{
367 struct bsd_driver_data *drv = priv;
368
369 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
370
371 return set80211param(drv, IEEE80211_IOC_PRIVACY, enabled);
372}
373
374static int
375bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
376{
377 struct bsd_driver_data *drv = priv;
378 struct ieee80211req_mlme mlme;
379
380 wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
381 __func__, ether_sprintf(addr), authorized);
382
383 if (authorized)
384 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
385 else
386 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
387 mlme.im_reason = 0;
388 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
389 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
390}
391
392static int
393bsd_sta_set_flags(void *priv, const u8 *addr, int total_flags, int flags_or,
394 int flags_and)
395{
396 /* For now, only support setting Authorized flag */
397 if (flags_or & WLAN_STA_AUTHORIZED)
398 return bsd_set_sta_authorized(priv, addr, 1);
399 if (!(flags_and & WLAN_STA_AUTHORIZED))
400 return bsd_set_sta_authorized(priv, addr, 0);
401 return 0;
402}
403
404static int
405bsd_del_key(void *priv, const u8 *addr, int key_idx)
406{
407 struct bsd_driver_data *drv = priv;
408 struct ieee80211req_del_key wk;
409
410 wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
411 __func__, ether_sprintf(addr), key_idx);
412
413 memset(&wk, 0, sizeof(wk));
414 if (addr != NULL) {
415 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
416 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
417 } else {
418 wk.idk_keyix = key_idx;
419 }
420
421 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
422}
423
424static int
425bsd_set_key(const char *ifname, void *priv, wpa_alg alg,
426 const u8 *addr, int key_idx, int set_tx, const u8 *seq,
427 size_t seq_len, const u8 *key, size_t key_len)
428{
429 struct bsd_driver_data *drv = priv;
430 struct ieee80211req_key wk;
431 u_int8_t cipher;
432
433 if (alg == WPA_ALG_NONE)
434 return bsd_del_key(drv, addr, key_idx);
435
436 wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%s key_idx=%d",
437 __func__, alg, ether_sprintf(addr), key_idx);
438
439 if (alg == WPA_ALG_WEP)
440 cipher = IEEE80211_CIPHER_WEP;
441 else if (alg == WPA_ALG_TKIP)
442 cipher = IEEE80211_CIPHER_TKIP;
443 else if (alg == WPA_ALG_CCMP)
444 cipher = IEEE80211_CIPHER_AES_CCM;
445 else {
446 printf("%s: unknown/unsupported algorithm %d\n",
447 __func__, alg);
448 return -1;
449 }
450
451 if (key_len > sizeof(wk.ik_keydata)) {
92e63aaf 452 printf("%s: key length %d too big\n", __func__, (int) key_len);
c5121837
JM		 453 return -3;
454 }
455
456 memset(&wk, 0, sizeof(wk));
457 wk.ik_type = cipher;
458 wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
459 if (addr == NULL) {
460 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
461 wk.ik_keyix = key_idx;
462 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
463 } else {
464 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
465 wk.ik_keyix = IEEE80211_KEYIX_NONE;
466 }
467 wk.ik_keylen = key_len;
468 memcpy(wk.ik_keydata, key, key_len);
469
470 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
471}
472
473
474static int
475bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
476 u8 *seq)
477{
478 struct bsd_driver_data *drv = priv;
479 struct ieee80211req_key wk;
480
481 wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
482 __func__, ether_sprintf(addr), idx);
483
484 memset(&wk, 0, sizeof(wk));
485 if (addr == NULL)
486 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
487 else
488 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
489 wk.ik_keyix = idx;
490
491 if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
492 printf("Failed to get encryption.\n");
493 return -1;
494 }
495
496#ifdef WORDS_BIGENDIAN
497 {
498 /*
499 * wk.ik_keytsc is in host byte order (big endian), need to
500 * swap it to match with the byte order used in WPA.
501 */
502 int i;
503 u8 tmp[WPA_KEY_RSC_LEN];
504 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
505 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
506 seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
507 }
508 }
509#else /* WORDS_BIGENDIAN */
510 memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
511#endif /* WORDS_BIGENDIAN */
512 return 0;
513}
514
515
516static int
517bsd_flush(void *priv)
518{
519 u8 allsta[IEEE80211_ADDR_LEN];
520
521 memset(allsta, 0xff, IEEE80211_ADDR_LEN);
731723a5 522 return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
c5121837
JM		 523}
524
525
526static int
527bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
528 const u8 *addr)
529{
530 struct bsd_driver_data *drv = priv;
531 struct ieee80211req_sta_stats stats;
532
533 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
534 if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
535 /* XXX? do packets counts include non-data frames? */
536 data->rx_packets = stats.is_stats.ns_rx_data;
537 data->rx_bytes = stats.is_stats.ns_rx_bytes;
538 data->tx_packets = stats.is_stats.ns_tx_data;
539 data->tx_bytes = stats.is_stats.ns_tx_bytes;
540 }
541 return 0;
542}
543
544static int
545bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
546{
547 /*
548 * Do nothing; we setup parameters at startup that define the
549 * contents of the beacon information element.
550 */
551 return 0;
552}
553
554static int
731723a5 555bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
c5121837
JM		 556{
557 struct bsd_driver_data *drv = priv;
558 struct ieee80211req_mlme mlme;
559
560 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
561 __func__, ether_sprintf(addr), reason_code);
562
563 mlme.im_op = IEEE80211_MLME_DEAUTH;
564 mlme.im_reason = reason_code;
565 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
566 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
567}
568
569static int
731723a5
JM		 570bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
571 int reason_code)
c5121837
JM		 572{
573 struct bsd_driver_data *drv = priv;
574 struct ieee80211req_mlme mlme;
575
576 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
577 __func__, ether_sprintf(addr), reason_code);
578
579 mlme.im_op = IEEE80211_MLME_DISASSOC;
580 mlme.im_reason = reason_code;
581 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
582 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
583}
584
585static int
586bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
587{
588 struct hostapd_data *hapd = drv->hapd;
589 struct ieee80211req_wpaie ie;
590 int ielen = 0;
591 u8 *iebuf = NULL;
592
593 /*
594 * Fetch and validate any negotiated WPA/RSN parameters.
595 */
596 memset(&ie, 0, sizeof(ie));
597 memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
598 if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
599 printf("Failed to get WPA/RSN information element.\n");
600 goto no_ie;
601 }
602 iebuf = ie.wpa_ie;
603 ielen = ie.wpa_ie[1];
604 if (ielen == 0)
605 iebuf = NULL;
606 else
607 ielen += 2;
608
609no_ie:
610 return hostapd_notif_assoc(hapd, addr, iebuf, ielen);
611}
612
c5121837
JM		 613static void
614bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
615{
616 struct bsd_driver_data *drv = ctx;
617 struct hostapd_data *hapd = drv->hapd;
618 char buf[2048];
619 struct if_announcemsghdr *ifan;
620 struct rt_msghdr *rtm;
621 struct ieee80211_michael_event *mic;
622 struct ieee80211_join_event *join;
623 struct ieee80211_leave_event *leave;
624 int n;
625
626 n = read(sock, buf, sizeof(buf));
627 if (n < 0) {
628 if (errno != EINTR && errno != EAGAIN)
629 perror("read(PF_ROUTE)");
630 return;
631 }
632
633 rtm = (struct rt_msghdr *) buf;
634 if (rtm->rtm_version != RTM_VERSION) {
635 wpa_printf(MSG_DEBUG, "Routing message version %d not "
636 "understood\n", rtm->rtm_version);
637 return;
638 }
639 ifan = (struct if_announcemsghdr *) rtm;
640 switch (rtm->rtm_type) {
641 case RTM_IEEE80211:
642 switch (ifan->ifan_what) {
643 case RTM_IEEE80211_ASSOC:
644 case RTM_IEEE80211_REASSOC:
645 case RTM_IEEE80211_DISASSOC:
646 case RTM_IEEE80211_SCAN:
647 break;
648 case RTM_IEEE80211_LEAVE:
649 leave = (struct ieee80211_leave_event *) &ifan[1];
650 hostapd_notif_disassoc(drv->hapd, leave->iev_addr);
651 break;
652 case RTM_IEEE80211_JOIN:
653#ifdef RTM_IEEE80211_REJOIN
654 case RTM_IEEE80211_REJOIN:
655#endif
656 join = (struct ieee80211_join_event *) &ifan[1];
657 bsd_new_sta(drv, join->iev_addr);
658 break;
659 case RTM_IEEE80211_REPLAY:
660 /* ignore */
661 break;
662 case RTM_IEEE80211_MICHAEL:
663 mic = (struct ieee80211_michael_event *) &ifan[1];
664 wpa_printf(MSG_DEBUG,
665 "Michael MIC failure wireless event: "
666 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
667 MAC2STR(mic->iev_src));
668 hostapd_michael_mic_failure(hapd, mic->iev_src);
669 break;
670 }
671 break;
672 }
673}
674
675static int
676bsd_wireless_event_init(struct bsd_driver_data *drv)
677{
678 int s;
679
680 drv->wext_sock = -1;
681
682 s = socket(PF_ROUTE, SOCK_RAW, 0);
683 if (s < 0) {
684 perror("socket(PF_ROUTE,SOCK_RAW)");
685 return -1;
686 }
687 eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
688 drv->wext_sock = s;
689
690 return 0;
691}
692
693static void
694bsd_wireless_event_deinit(struct bsd_driver_data *drv)
695{
696 if (drv->wext_sock < 0)
697 return;
698 eloop_unregister_read_sock(drv->wext_sock);
699 close(drv->wext_sock);
700}
701
702
703static int
704bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
705 int encrypt, const u8 *own_addr)
706{
707 struct bsd_driver_data *drv = priv;
708 unsigned char buf[3000];
709 unsigned char *bp = buf;
710 struct l2_ethhdr *eth;
711 size_t len;
712 int status;
713
714 /*
715 * Prepend the Etherent header. If the caller left us
716 * space at the front we could just insert it but since
717 * we don't know we copy to a local buffer. Given the frequency
718 * and size of frames this probably doesn't matter.
719 */
720 len = data_len + sizeof(struct l2_ethhdr);
721 if (len > sizeof(buf)) {
722 bp = malloc(len);
723 if (bp == NULL) {
724 printf("EAPOL frame discarded, cannot malloc temp "
92e63aaf 725 "buffer of size %u!\n", (unsigned int) len);
c5121837
JM		 726 return -1;
727 }
728 }
729 eth = (struct l2_ethhdr *) bp;
730 memcpy(eth->h_dest, addr, ETH_ALEN);
731 memcpy(eth->h_source, own_addr, ETH_ALEN);
732 eth->h_proto = htons(ETH_P_EAPOL);
733 memcpy(eth+1, data, data_len);
734
735 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
736
737 status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
738
739 if (bp != buf)
740 free(bp);
741 return status;
742}
743
744static void
745handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
746{
747 struct bsd_driver_data *drv = ctx;
748 hostapd_eapol_receive(drv->hapd, src_addr,
749 buf + sizeof(struct l2_ethhdr),
750 len - sizeof(struct l2_ethhdr));
751}
752
753static int
66d4085f 754hostapd_bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
c5121837
JM		 755{
756 struct bsd_driver_data *drv = priv;
66d4085f 757 int ssid_len;
c5121837 758
66d4085f 759 ssid_len = bsd_get_ssid(drv->ioctl_sock, drv->iface, buf);
c5121837
JM		 760 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, ssid_len, buf);
761
762 return ssid_len;
763}
764
765static int
66d4085f 766hostapd_bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
c5121837
JM		 767{
768 struct bsd_driver_data *drv = priv;
769
770 wpa_printf(MSG_DEBUG, "%s: ssid=\"%.*s\"", __func__, len, buf);
771
66d4085f 772 return bsd_set_ssid(drv->ioctl_sock, drv->iface, buf, len);
c5121837
JM		 773}
774
775static void *
92f475b4 776bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
c5121837
JM		 777{
778 struct bsd_driver_data *drv;
779
780 drv = os_zalloc(sizeof(struct bsd_driver_data));
781 if (drv == NULL) {
782 printf("Could not allocate memory for bsd driver data\n");
783 goto bad;
784 }
785
786 drv->hapd = hapd;
787 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
788 if (drv->ioctl_sock < 0) {
789 perror("socket[PF_INET,SOCK_DGRAM]");
790 goto bad;
791 }
412036f5 792 memcpy(drv->iface, params->ifname, sizeof(drv->iface));
c5121837
JM		 793
794 drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
795 handle_read, drv, 1);
796 if (drv->sock_xmit == NULL)
797 goto bad;
412036f5 798 if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
c5121837
JM		 799 goto bad;
800
801 bsd_set_iface_flags(drv, 0); /* mark down during setup */
802 if (bsd_wireless_event_init(drv))
803 goto bad;
804
805 return drv;
806bad:
807 if (drv->sock_xmit != NULL)
808 l2_packet_deinit(drv->sock_xmit);
809 if (drv->ioctl_sock >= 0)
810 close(drv->ioctl_sock);
811 if (drv != NULL)
812 free(drv);
813 return NULL;
814}
815
816
817static void
818bsd_deinit(void *priv)
819{
820 struct bsd_driver_data *drv = priv;
821
822 bsd_wireless_event_deinit(drv);
823 (void) bsd_set_iface_flags(drv, 0);
824 if (drv->ioctl_sock >= 0)
825 close(drv->ioctl_sock);
826 if (drv->sock_xmit != NULL)
827 l2_packet_deinit(drv->sock_xmit);
828 free(drv);
829}
830
831const struct wpa_driver_ops wpa_driver_bsd_ops = {
832 .name = "bsd",
833 .hapd_init = bsd_init,
834 .hapd_deinit = bsd_deinit,
835 .set_ieee8021x = bsd_set_ieee8021x,
836 .set_privacy = bsd_set_privacy,
837 .hapd_set_key = bsd_set_key,
838 .get_seqnum = bsd_get_seqnum,
839 .flush = bsd_flush,
840 .set_generic_elem = bsd_set_opt_ie,
841 .sta_set_flags = bsd_sta_set_flags,
842 .read_sta_data = bsd_read_sta_driver_data,
843 .hapd_send_eapol = bsd_send_eapol,
844 .sta_disassoc = bsd_sta_disassoc,
845 .sta_deauth = bsd_sta_deauth,
66d4085f
RM		 846 .hapd_set_ssid = hostapd_bsd_set_ssid,
847 .hapd_get_ssid = hostapd_bsd_get_ssid,
c5121837
JM		 848};
849
850#else /* HOSTAPD */
851
6fc6879b
JM		 852struct wpa_driver_bsd_data {
853 int sock; /* open socket for 802.11 ioctls */
854 int route; /* routing socket for events */
855 char ifname[IFNAMSIZ+1]; /* interface name */
856 unsigned int ifindex; /* interface index */
857 void *ctx;
858 int prev_roaming; /* roaming state to restore on deinit */
859 int prev_privacy; /* privacy state to restore on deinit */
860 int prev_wpa; /* wpa state to restore on deinit */
861};
862
863static int
864set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
865{
66d4085f 866 return bsd_set80211var(drv->sock, drv->ifname, op, arg, arg_len);
6fc6879b
JM		 867}
868
869static int
870get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
871{
66d4085f 872 return bsd_get80211var(drv->sock, drv->ifname, op, arg, arg_len);
6fc6879b
JM		 873}
874
875static int
876set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
877{
66d4085f 878 return bsd_set80211param(drv->sock, drv->ifname, op, arg);
6fc6879b
JM		 879}
880
881static int
882get80211param(struct wpa_driver_bsd_data *drv, int op)
883{
884 struct ieee80211req ireq;
885
886 os_memset(&ireq, 0, sizeof(ireq));
66d4085f 887 os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
6fc6879b
JM		 888 ireq.i_type = op;
889
890 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
891 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
892 op, strerror(errno));
893 return -1;
894 }
895 return ireq.i_val;
896}
897
898static int
899getifflags(struct wpa_driver_bsd_data *drv, int *flags)
900{
901 struct ifreq ifr;
902
903 os_memset(&ifr, 0, sizeof(ifr));
904 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
905 if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
906 perror("SIOCGIFFLAGS");
907 return errno;
908 }
909 *flags = ifr.ifr_flags & 0xffff;
910 return 0;
911}
912
913static int
914setifflags(struct wpa_driver_bsd_data *drv, int flags)
915{
916 struct ifreq ifr;
917
918 os_memset(&ifr, 0, sizeof(ifr));
919 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
920 ifr.ifr_flags = flags & 0xffff;
921 if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
922 perror("SIOCSIFFLAGS");
923 return errno;
924 }
925 return 0;
926}
927
928static int
929wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
930{
931 struct wpa_driver_bsd_data *drv = priv;
66d4085f 932#ifdef SIOCG80211BSSID
a65f4a57 933 struct ieee80211_bssid bs;
6fc6879b 934
a65f4a57
MH		 935 os_strncpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
936 if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
937 return -1;
938 os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
939 return 0;
940#else
6fc6879b
JM		 941 return get80211var(drv, IEEE80211_IOC_BSSID,
942 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
a65f4a57 943#endif
6fc6879b
JM		 944}
945
946#if 0
947static int
948wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
949{
950 struct wpa_driver_bsd_data *drv = priv;
951
952 return set80211var(drv, IEEE80211_IOC_BSSID,
953 bssid, IEEE80211_ADDR_LEN);
954}
955#endif
956
957static int
958wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
959{
960 struct wpa_driver_bsd_data *drv = priv;
961
66d4085f 962 return bsd_get_ssid(drv->sock, drv->ifname, ssid);
6fc6879b
JM		 963}
964
965static int
4df91b3f 966wpa_driver_bsd_set_ssid(void *priv, const u8 *ssid,
6fc6879b
JM		 967 size_t ssid_len)
968{
969 struct wpa_driver_bsd_data *drv = priv;
970
66d4085f 971 return bsd_set_ssid(drv->sock, drv->ifname, ssid, ssid_len);
6fc6879b
JM		 972}
973
974static int
975wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
4df91b3f 976 const u8 *wpa_ie, size_t wpa_ie_len)
6fc6879b
JM		 977{
978 return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
979}
980
981static int
982wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
983{
984 struct wpa_driver_bsd_data *drv = priv;
985 int ret = 0;
986
987 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
988 __FUNCTION__, wpa, privacy);
989
990 if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
991 ret = -1;
992 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
993 ret = -1;
994 if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
995 ret = -1;
996
997 return ret;
998}
999
1000static int
1001wpa_driver_bsd_set_wpa(void *priv, int enabled)
1002{
1003 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1004
1005 return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
1006}
1007
1008static int
1009wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
1010 const unsigned char *addr)
1011{
1012 struct ieee80211req_del_key wk;
1013
1014 os_memset(&wk, 0, sizeof(wk));
1015 if (addr != NULL &&
1016 bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
1017 struct ether_addr ea;
1018
1019 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1020 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
1021 __func__, ether_ntoa(&ea), key_idx);
1022 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
1023 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
1024 } else {
1025 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
1026 wk.idk_keyix = key_idx;
1027 }
1028 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
1029}
1030
1031static int
1032wpa_driver_bsd_set_key(void *priv, wpa_alg alg,
1033 const unsigned char *addr, int key_idx, int set_tx,
1034 const u8 *seq, size_t seq_len,
1035 const u8 *key, size_t key_len)
1036{
1037 struct wpa_driver_bsd_data *drv = priv;
1038 struct ieee80211req_key wk;
1039 struct ether_addr ea;
1040 char *alg_name;
1041 u_int8_t cipher;
1042
1043 if (alg == WPA_ALG_NONE)
1044 return wpa_driver_bsd_del_key(drv, key_idx, addr);
1045
1046 switch (alg) {
1047 case WPA_ALG_WEP:
1048 alg_name = "WEP";
1049 cipher = IEEE80211_CIPHER_WEP;
1050 break;
1051 case WPA_ALG_TKIP:
1052 alg_name = "TKIP";
1053 cipher = IEEE80211_CIPHER_TKIP;
1054 break;
1055 case WPA_ALG_CCMP:
1056 alg_name = "CCMP";
1057 cipher = IEEE80211_CIPHER_AES_CCM;
1058 break;
1059 default:
1060 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
1061 __func__, alg);
1062 return -1;
1063 }
1064
1065 os_memcpy(&ea, addr, IEEE80211_ADDR_LEN);
1066 wpa_printf(MSG_DEBUG,
1067 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
1068 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
1069 seq_len, key_len);
1070
1071 if (seq_len > sizeof(u_int64_t)) {
1072 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
1073 __func__, seq_len);
1074 return -2;
1075 }
1076 if (key_len > sizeof(wk.ik_keydata)) {
1077 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
1078 __func__, key_len);
1079 return -3;
1080 }
1081
1082 os_memset(&wk, 0, sizeof(wk));
1083 wk.ik_type = cipher;
1084 wk.ik_flags = IEEE80211_KEY_RECV;
1085 if (set_tx)
1086 wk.ik_flags |= IEEE80211_KEY_XMIT;
1087 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
1088 /*
1089 * Deduce whether group/global or unicast key by checking
1090 * the address (yech). Note also that we can only mark global
1091 * keys default; doing this for a unicast key is an error.
1092 */
1093 if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
1094 wk.ik_flags |= IEEE80211_KEY_GROUP;
1095 wk.ik_keyix = key_idx;
1096 } else {
1097 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
1098 }
1099 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
1100 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
1101 wk.ik_keylen = key_len;
1102 os_memcpy(&wk.ik_keyrsc, seq, seq_len);
1103 os_memcpy(wk.ik_keydata, key, key_len);
1104
1105 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
1106}
1107
1108static int
1109wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
1110{
1111 struct wpa_driver_bsd_data *drv = priv;
1112
1113 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1114 return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1115}
1116
1117
1118static int
1119wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1120{
1121 struct wpa_driver_bsd_data *drv = priv;
1122
1123 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1124 return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1125}
1126
1127static int
1128wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1129{
1130 struct wpa_driver_bsd_data *drv = priv;
1131 struct ieee80211req_mlme mlme;
1132
1133 wpa_printf(MSG_DEBUG, "%s", __func__);
1134 os_memset(&mlme, 0, sizeof(mlme));
1135 mlme.im_op = IEEE80211_MLME_DEAUTH;
1136 mlme.im_reason = reason_code;
1137 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1138 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1139}
1140
1141static int
1142wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
1143{
1144 struct wpa_driver_bsd_data *drv = priv;
1145 struct ieee80211req_mlme mlme;
1146
1147 wpa_printf(MSG_DEBUG, "%s", __func__);
1148 os_memset(&mlme, 0, sizeof(mlme));
1149 mlme.im_op = IEEE80211_MLME_DISASSOC;
1150 mlme.im_reason = reason_code;
1151 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
1152 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
1153}
1154
1155static int
1156wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1157{
1158 struct wpa_driver_bsd_data *drv = priv;
1159 struct ieee80211req_mlme mlme;
1160 int privacy;
1161
1162 wpa_printf(MSG_DEBUG,
1163 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1164 , __func__
92e63aaf
JM		 1165 , (unsigned int) params->ssid_len, params->ssid
1166 , (unsigned int) params->wpa_ie_len
6fc6879b
JM		 1167 , params->pairwise_suite
1168 , params->group_suite
1169 , params->key_mgmt_suite
1170 );
1171
1172 /* XXX error handling is wrong but unclear what to do... */
1173 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1174 return -1;
6fc6879b
JM		 1175
1176 privacy = !(params->pairwise_suite == CIPHER_NONE &&
1177 params->group_suite == CIPHER_NONE &&
1178 params->key_mgmt_suite == KEY_MGMT_NONE &&
1179 params->wpa_ie_len == 0);
1180 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1181
1182 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1183 return -1;
1184
1185 if (params->wpa_ie_len &&
1186 set80211param(drv, IEEE80211_IOC_WPA,
1187 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1188 return -1;
1189
1190 os_memset(&mlme, 0, sizeof(mlme));
1191 mlme.im_op = IEEE80211_MLME_ASSOC;
6fc6879b
JM		 1192 if (params->ssid != NULL)
1193 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1194 mlme.im_ssid_len = params->ssid_len;
6fc6879b
JM		 1195 if (params->bssid != NULL)
1196 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1197 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1198 return -1;
1199 return 0;
1200}
1201
1202static int
1203wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1204{
1205 struct wpa_driver_bsd_data *drv = priv;
1206 int authmode;
1207
1208 if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
1209 (auth_alg & AUTH_ALG_SHARED_KEY))
1210 authmode = IEEE80211_AUTH_AUTO;
1211 else if (auth_alg & AUTH_ALG_SHARED_KEY)
1212 authmode = IEEE80211_AUTH_SHARED;
1213 else
1214 authmode = IEEE80211_AUTH_OPEN;
1215
1216 return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
1217}
1218
1219static int
1220wpa_driver_bsd_scan(void *priv, const u8 *ssid, size_t ssid_len)
1221{
1222 struct wpa_driver_bsd_data *drv = priv;
1223 int flags;
1224
1225 /* NB: interface must be marked UP to do a scan */
1226 if (getifflags(drv, &flags) != 0 || setifflags(drv, flags | IFF_UP) != 0)
1227 return -1;
1228
1229 /* set desired ssid before scan */
1230 if (wpa_driver_bsd_set_ssid(drv, ssid, ssid_len) < 0)
1231 return -1;
1232
1233 /* NB: net80211 delivers a scan complete event so no need to poll */
1234 return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1235}
1236
6fc6879b
JM		 1237static void
1238wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1239{
1240 struct wpa_driver_bsd_data *drv = sock_ctx;
1241 char buf[2048];
1242 struct if_announcemsghdr *ifan;
1243 struct if_msghdr *ifm;
1244 struct rt_msghdr *rtm;
1245 union wpa_event_data event;
1246 struct ieee80211_michael_event *mic;
1247 int n;
1248
1249 n = read(sock, buf, sizeof(buf));
1250 if (n < 0) {
1251 if (errno != EINTR && errno != EAGAIN)
1252 perror("read(PF_ROUTE)");
1253 return;
1254 }
1255
1256 rtm = (struct rt_msghdr *) buf;
1257 if (rtm->rtm_version != RTM_VERSION) {
1258 wpa_printf(MSG_DEBUG, "Routing message version %d not "
1259 "understood\n", rtm->rtm_version);
1260 return;
1261 }
1262 os_memset(&event, 0, sizeof(event));
1263 switch (rtm->rtm_type) {
1264 case RTM_IFANNOUNCE:
1265 ifan = (struct if_announcemsghdr *) rtm;
1266 if (ifan->ifan_index != drv->ifindex)
1267 break;
1268 strlcpy(event.interface_status.ifname, drv->ifname,
1269 sizeof(event.interface_status.ifname));
1270 switch (ifan->ifan_what) {
1271 case IFAN_DEPARTURE:
1272 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1273 default:
1274 return;
1275 }
1276 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1277 event.interface_status.ifname,
1278 ifan->ifan_what == IFAN_DEPARTURE ?
1279 "removed" : "added");
1280 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1281 break;
1282 case RTM_IEEE80211:
1283 ifan = (struct if_announcemsghdr *) rtm;
1284 if (ifan->ifan_index != drv->ifindex)
1285 break;
1286 switch (ifan->ifan_what) {
1287 case RTM_IEEE80211_ASSOC:
1288 case RTM_IEEE80211_REASSOC:
1289 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1290 break;
1291 case RTM_IEEE80211_DISASSOC:
1292 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1293 break;
1294 case RTM_IEEE80211_SCAN:
1295 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1296 break;
1297 case RTM_IEEE80211_REPLAY:
1298 /* ignore */
1299 break;
1300 case RTM_IEEE80211_MICHAEL:
1301 mic = (struct ieee80211_michael_event *) &ifan[1];
1302 wpa_printf(MSG_DEBUG,
1303 "Michael MIC failure wireless event: "
1304 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1305 MAC2STR(mic->iev_src));
1306
1307 os_memset(&event, 0, sizeof(event));
1308 event.michael_mic_failure.unicast =
1309 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1310 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1311 &event);
1312 break;
1313 }
1314 break;
1315 case RTM_IFINFO:
1316 ifm = (struct if_msghdr *) rtm;
1317 if (ifm->ifm_index != drv->ifindex)
1318 break;
1319 if ((rtm->rtm_flags & RTF_UP) == 0) {
1320 strlcpy(event.interface_status.ifname, drv->ifname,
1321 sizeof(event.interface_status.ifname));
1322 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1323 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1324 event.interface_status.ifname);
1325 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1326 }
1327 break;
1328 }
1329}
1330
a65f4a57
MH		 1331static void
1332wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1333 struct ieee80211req_scan_result *sr)
6fc6879b 1334{
a65f4a57
MH		 1335 struct wpa_scan_res *result, **tmp;
1336 size_t extra_len;
1337 u8 *pos;
6fc6879b 1338
a65f4a57
MH		 1339 extra_len = 2 + sr->isr_ssid_len;
1340 extra_len += 2 + sr->isr_nrates;
1341 extra_len += 3; /* ERP IE */
1342 extra_len += sr->isr_ie_len;
6fc6879b 1343
a65f4a57
MH		 1344 result = os_zalloc(sizeof(*result) + extra_len);
1345 if (result == NULL)
1346 return;
1347 os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1348 result->freq = sr->isr_freq;
1349 result->beacon_int = sr->isr_intval;
1350 result->caps = sr->isr_capinfo;
1351 result->qual = sr->isr_rssi;
1352 result->noise = sr->isr_noise;
6fc6879b 1353
a65f4a57 1354 pos = (u8 *)(result + 1);
6fc6879b 1355
a65f4a57
MH		 1356 *pos++ = WLAN_EID_SSID;
1357 *pos++ = sr->isr_ssid_len;
1358 os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1359 pos += sr->isr_ssid_len;
6fc6879b 1360
a65f4a57
MH		 1361 /*
1362 * Deal all rates as supported rate.
1363 * Because net80211 doesn't report extended supported rate or not.
1364 */
1365 *pos++ = WLAN_EID_SUPP_RATES;
1366 *pos++ = sr->isr_nrates;
1367 os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1368 pos += sr->isr_nrates;
6fc6879b 1369
a65f4a57
MH		 1370 *pos++ = WLAN_EID_ERP_INFO;
1371 *pos++ = 1;
1372 *pos++ = sr->isr_erp;
6fc6879b 1373
a65f4a57
MH		 1374 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1375 pos += sr->isr_ie_len;
6fc6879b 1376
a65f4a57
MH		 1377 result->ie_len = pos - (u8 *)(result + 1);
1378
1379 tmp = os_realloc(res->res,
1380 (res->num + 1) * sizeof(struct wpa_scan_res *));
1381 if (tmp == NULL) {
1382 os_free(result);
1383 return;
1384 }
1385 tmp[res->num++] = result;
1386 res->res = tmp;
6fc6879b
JM		 1387}
1388
a65f4a57
MH		 1389struct wpa_scan_results *
1390wpa_driver_bsd_get_scan_results2(void *priv)
6fc6879b 1391{
6fc6879b 1392 struct wpa_driver_bsd_data *drv = priv;
6fc6879b 1393 struct ieee80211req_scan_result *sr;
a65f4a57
MH		 1394 struct wpa_scan_results *res;
1395 int len, rest;
1396 uint8_t buf[24*1024], *pos;
6fc6879b 1397
a65f4a57 1398 len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
6fc6879b 1399 if (len < 0)
a65f4a57
MH		 1400 return NULL;
1401
1402 res = os_zalloc(sizeof(*res));
1403 if (res == NULL)
1404 return NULL;
6fc6879b 1405
a65f4a57
MH		 1406 pos = buf;
1407 rest = len;
1408 while (rest >= sizeof(struct ieee80211req_scan_result)) {
1409 sr = (struct ieee80211req_scan_result *)pos;
1410 wpa_driver_bsd_add_scan_entry(res, sr);
1411 pos += sr->isr_len;
1412 rest -= sr->isr_len;
6fc6879b 1413 }
6fc6879b 1414
a65f4a57
MH		 1415 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1416 len, (unsigned long)res->num);
6fc6879b 1417
a65f4a57 1418 return res;
6fc6879b
JM		 1419}
1420
1421static void *
1422wpa_driver_bsd_init(void *ctx, const char *ifname)
1423{
1424#define GETPARAM(drv, param, v) \
1425 (((v) = get80211param(drv, param)) != -1)
1426 struct wpa_driver_bsd_data *drv;
1427
1428 drv = os_zalloc(sizeof(*drv));
1429 if (drv == NULL)
1430 return NULL;
1431 /*
1432 * NB: We require the interface name be mappable to an index.
1433 * This implies we do not support having wpa_supplicant
1434 * wait for an interface to appear. This seems ok; that
1435 * doesn't belong here; it's really the job of devd.
1436 */
1437 drv->ifindex = if_nametoindex(ifname);
1438 if (drv->ifindex == 0) {
1439 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1440 __func__, ifname);
1441 goto fail1;
1442 }
1443 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1444 if (drv->sock < 0)
1445 goto fail1;
1446 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1447 if (drv->route < 0)
1448 goto fail;
1449 eloop_register_read_sock(drv->route,
1450 wpa_driver_bsd_event_receive, ctx, drv);
1451
1452 drv->ctx = ctx;
1453 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1454
1455 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1456 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1457 __func__, strerror(errno));
1458 goto fail;
1459 }
1460 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1461 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1462 __func__, strerror(errno));
1463 goto fail;
1464 }
1465 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1466 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1467 __func__, strerror(errno));
1468 goto fail;
1469 }
1470 if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
1471 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
1472 "roaming: %s", __func__, strerror(errno));
1473 goto fail;
1474 }
1475
1476 if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
1477 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
1478 __func__, strerror(errno));
1479 goto fail;
1480 }
1481
1482 return drv;
1483fail:
1484 close(drv->sock);
1485fail1:
1486 os_free(drv);
1487 return NULL;
1488#undef GETPARAM
1489}
1490
1491static void
1492wpa_driver_bsd_deinit(void *priv)
1493{
1494 struct wpa_driver_bsd_data *drv = priv;
1495 int flags;
1496
1497 eloop_unregister_read_sock(drv->route);
1498
1499 /* NB: mark interface down */
1500 if (getifflags(drv, &flags) == 0)
1501 (void) setifflags(drv, flags &~ IFF_UP);
1502
1503 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1504 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1505 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1506 __func__);
1507
1508 (void) close(drv->route); /* ioctl socket */
1509 (void) close(drv->sock); /* event socket */
1510 os_free(drv);
1511}
1512
1513
1514const struct wpa_driver_ops wpa_driver_bsd_ops = {
1515 .name = "bsd",
66d4085f 1516 .desc = "BSD 802.11 support",
6fc6879b
JM		 1517 .init = wpa_driver_bsd_init,
1518 .deinit = wpa_driver_bsd_deinit,
1519 .get_bssid = wpa_driver_bsd_get_bssid,
1520 .get_ssid = wpa_driver_bsd_get_ssid,
1521 .set_wpa = wpa_driver_bsd_set_wpa,
1522 .set_key = wpa_driver_bsd_set_key,
1523 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
1524 .set_drop_unencrypted = wpa_driver_bsd_set_drop_unencrypted,
1525 .scan = wpa_driver_bsd_scan,
a65f4a57 1526 .get_scan_results2 = wpa_driver_bsd_get_scan_results2,
6fc6879b
JM		 1527 .deauthenticate = wpa_driver_bsd_deauthenticate,
1528 .disassociate = wpa_driver_bsd_disassociate,
1529 .associate = wpa_driver_bsd_associate,
1530 .set_auth_alg = wpa_driver_bsd_set_auth_alg,
1531};
c5121837
JM		 1532
1533#endif /* HOSTAPD */
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