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Hook {wpa_supplicant, hostapd} 0.5.8 into building.
[dragonfly/port-amd64.git] / usr.sbin / 802_11 / hostapd / driver_dragonfly.c
blobdc401bc5c5488e09a62b7069eb0bad8f6feda349
1 /*
2 * Host AP - 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 * $FreeBSD: src/usr.sbin/wpa/hostapd/driver_freebsd.c,v 1.6 2007/07/09 16:26:48 sam Exp $
16 * $DragonFly: src/usr.sbin/802_11/hostapd/driver_dragonfly.c,v 1.3 2007/08/07 11:25:36 sephe Exp $
17 */
18 #include <sys/endian.h>
19 #include <stdlib.h>
20 #include <stdio.h>
21 #include <unistd.h>
22 #include <string.h>
23 #include <sys/ioctl.h>
24 #include <errno.h>
25
26 #include <sys/socket.h>
27 #include <net/if.h>
28 #include <netinet/in.h>
29
30 #include <netproto/802_11/ieee80211.h>
31 #include <netproto/802_11/ieee80211_crypto.h>
32 #include <netproto/802_11/ieee80211_ioctl.h>
33
34 #include "hostapd.h"
35 #include "driver.h"
36 #include "ieee802_1x.h"
37 #include "eloop.h"
38 #include "sta_info.h"
39 #include "l2_packet.h"
40
41 #include "eapol_sm.h"
42 #include "wpa.h"
43 #include "radius.h"
44 #include "ieee802_11.h"
45 #include "common.h"
46 #include "hostap_common.h"
47
48 struct bsd_driver_data {
49 struct driver_ops ops; /* base class */
50 struct hostapd_data *hapd; /* back pointer */
51
52 char iface[IFNAMSIZ + 1];
53 struct l2_packet_data *sock_xmit; /* raw packet xmit socket */
54 int ioctl_sock; /* socket for ioctl() use */
55 int wext_sock; /* socket for wireless events */
56 };
57
58 static const struct driver_ops bsd_driver_ops;
59
60 static int bsd_sta_deauth(void *priv, const u8 *addr, int reason_code);
61
62 static int
63 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
64 {
65 struct ieee80211req ireq;
66
67 memset(&ireq, 0, sizeof(ireq));
68 strncpy(ireq.i_name, drv->iface, IFNAMSIZ);
69 ireq.i_type = op;
70 ireq.i_len = arg_len;
71 ireq.i_data = (void *) arg;
72
73 if (ioctl(drv->ioctl_sock, SIOCS80211, &ireq) < 0) {
74 perror("ioctl[SIOCS80211]");
75 return -1;
76 }
77 return 0;
78 }
79
80 static int
81 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
82 {
83 struct ieee80211req ireq;
84
85 memset(&ireq, 0, sizeof(ireq));
86 strncpy(ireq.i_name, drv->iface, IFNAMSIZ);
87 ireq.i_type = op;
88 ireq.i_len = arg_len;
89 ireq.i_data = arg;
90
91 if (ioctl(drv->ioctl_sock, SIOCG80211, &ireq) < 0) {
92 perror("ioctl[SIOCG80211]");
93 return -1;
94 }
95 return ireq.i_len;
96 }
97
98 static int
99 set80211param(struct bsd_driver_data *drv, int op, int arg)
100 {
101 struct ieee80211req ireq;
102
103 memset(&ireq, 0, sizeof(ireq));
104 strncpy(ireq.i_name, drv->iface, IFNAMSIZ);
105 ireq.i_type = op;
106 ireq.i_val = arg;
107
108 if (ioctl(drv->ioctl_sock, SIOCS80211, &ireq) < 0) {
109 perror("ioctl[SIOCS80211]");
110 return -1;
111 }
112 return 0;
113 }
114
115 static const char *
116 ether_sprintf(const u8 *addr)
117 {
118 static char buf[sizeof(MACSTR)];
119
120 if (addr != NULL)
121 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
122 else
123 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
124 return buf;
125 }
126
127 /*
128 * Configure WPA parameters.
129 */
130 static int
131 bsd_configure_wpa(struct bsd_driver_data *drv)
132 {
133 static const char *ciphernames[] =
134 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "*BAD*", "CKIP", "NONE" };
135 struct hostapd_data *hapd = drv->hapd;
136 struct hostapd_bss_config *conf = hapd->conf;
137 int v;
138
139 switch (conf->wpa_group) {
140 case WPA_CIPHER_CCMP:
141 v = IEEE80211_CIPHER_AES_CCM;
142 break;
143 case WPA_CIPHER_TKIP:
144 v = IEEE80211_CIPHER_TKIP;
145 break;
146 case WPA_CIPHER_WEP104:
147 v = IEEE80211_CIPHER_WEP;
148 break;
149 case WPA_CIPHER_WEP40:
150 v = IEEE80211_CIPHER_WEP;
151 break;
152 case WPA_CIPHER_NONE:
153 v = IEEE80211_CIPHER_NONE;
154 break;
155 default:
156 printf("Unknown group key cipher %u\n",
157 conf->wpa_group);
158 return -1;
159 }
160 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
161 "%s: group key cipher=%s (%u)\n", __func__, ciphernames[v], v);
162 if (set80211param(drv, IEEE80211_IOC_MCASTCIPHER, v)) {
163 printf("Unable to set group key cipher to %u (%s)\n",
164 v, ciphernames[v]);
165 return -1;
166 }
167 if (v == IEEE80211_CIPHER_WEP) {
168 /* key length is done only for specific ciphers */
169 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
170 if (set80211param(drv, IEEE80211_IOC_MCASTKEYLEN, v)) {
171 printf("Unable to set group key length to %u\n", v);
172 return -1;
173 }
174 }
175
176 v = 0;
177 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
178 v |= 1<<IEEE80211_CIPHER_AES_CCM;
179 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
180 v |= 1<<IEEE80211_CIPHER_TKIP;
181 if (conf->wpa_pairwise & WPA_CIPHER_NONE)
182 v |= 1<<IEEE80211_CIPHER_NONE;
183 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
184 "%s: pairwise key ciphers=0x%x\n", __func__, v);
185 if (set80211param(drv, IEEE80211_IOC_UCASTCIPHERS, v)) {
186 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
187 return -1;
188 }
189
190 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
191 "%s: key management algorithms=0x%x\n",
192 __func__, conf->wpa_key_mgmt);
193 if (set80211param(drv, IEEE80211_IOC_KEYMGTALGS, conf->wpa_key_mgmt)) {
194 printf("Unable to set key management algorithms to 0x%x\n",
195 conf->wpa_key_mgmt);
196 return -1;
197 }
198
199 v = 0;
200 if (conf->rsn_preauth)
201 v |= BIT(0);
202 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
203 "%s: rsn capabilities=0x%x\n", __func__, conf->rsn_preauth);
204 if (set80211param(drv, IEEE80211_IOC_RSNCAPS, v)) {
205 printf("Unable to set RSN capabilities to 0x%x\n", v);
206 return -1;
207 }
208
209 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
210 "%s: enable WPA= 0x%x\n", __func__, conf->wpa);
211 if (set80211param(drv, IEEE80211_IOC_WPA, conf->wpa)) {
212 printf("Unable to set WPA to %u\n", conf->wpa);
213 return -1;
214 }
215 return 0;
216 }
217
218
219 static int
220 bsd_set_iface_flags(void *priv, int dev_up)
221 {
222 struct bsd_driver_data *drv = priv;
223 struct hostapd_data *hapd = drv->hapd;
224 struct ifreq ifr;
225
226 HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
227 "%s: dev_up=%d\n", __func__, dev_up);
228
229 if (drv->ioctl_sock < 0)
230 return -1;
231
232 memset(&ifr, 0, sizeof(ifr));
233 snprintf(ifr.ifr_name, IFNAMSIZ, "%s", drv->iface);
234
235 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
236 perror("ioctl[SIOCGIFFLAGS]");
237 return -1;
238 }
239
240 if (dev_up)
241 ifr.ifr_flags |= IFF_UP;
242 else
243 ifr.ifr_flags &= ~IFF_UP;
244
245 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
246 perror("ioctl[SIOCSIFFLAGS]");
247 return -1;
248 }
249
250 if (dev_up) {
251 memset(&ifr, 0, sizeof(ifr));
252 snprintf(ifr.ifr_name, IFNAMSIZ, "%s", drv->iface);
253 ifr.ifr_mtu = HOSTAPD_MTU;
254 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
255 perror("ioctl[SIOCSIFMTU]");
256 printf("Setting MTU failed - trying to survive with "
257 "current value\n");
258 }
259 }
260
261 return 0;
262 }
263
264 static int
265 bsd_set_ieee8021x(const char *ifname, void *priv, int enabled)
266 {
267 struct bsd_driver_data *drv = priv;
268 struct hostapd_data *hapd = drv->hapd;
269 struct hostapd_bss_config *conf = hapd->conf;
270
271 HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
272 "%s: enabled=%d\n", __func__, enabled);
273
274 if (!enabled) {
275 /* XXX restore state */
276 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
277 IEEE80211_AUTH_AUTO);
278 }
279 if (!conf->wpa && !conf->ieee802_1x) {
280 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
281 HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
282 return -1;
283 }
284 if (conf->wpa && bsd_configure_wpa(drv) != 0) {
285 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
286 HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
287 return -1;
288 }
289 if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
290 (conf->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
291 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
292 HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
293 return -1;
294 }
295 return bsd_set_iface_flags(priv, 1);
296 }
297
298 static int
299 bsd_set_privacy(const char *ifname, void *priv, int enabled)
300 {
301 struct bsd_driver_data *drv = priv;
302 struct hostapd_data *hapd = drv->hapd;
303
304 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
305 "%s: enabled=%d\n", __func__, enabled);
306
307 return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
308 }
309
310 static int
311 bsd_set_sta_authorized(void *priv, const u8 *addr, int authorized)
312 {
313 struct bsd_driver_data *drv = priv;
314 struct hostapd_data *hapd = drv->hapd;
315 struct ieee80211req_mlme mlme;
316
317 HOSTAPD_DEBUG(HOSTAPD_DEBUG_VERBOSE,
318 "%s: addr=%s authorized=%d\n",
319 __func__, ether_sprintf(addr), authorized);
320
321 if (authorized)
322 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
323 else
324 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
325 mlme.im_reason = 0;
326 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
327 return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
328 }
329
330 static int
331 bsd_sta_set_flags(void *priv, const u8 *addr, int flags_or, int flags_and)
332 {
333 /* For now, only support setting Authorized flag */
334 if (flags_or & WLAN_STA_AUTHORIZED)
335 return bsd_set_sta_authorized(priv, addr, 1);
336 if (!(flags_and & WLAN_STA_AUTHORIZED))
337 return bsd_set_sta_authorized(priv, addr, 0);
338 return 0;
339 }
340
341 static int
342 bsd_del_key(void *priv, const unsigned char *addr, int key_idx)
343 {
344 struct bsd_driver_data *drv = priv;
345 struct hostapd_data *hapd = drv->hapd;
346 struct ieee80211req_del_key wk;
347
348 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
349 "%s: addr=%s key_idx=%d\n",
350 __func__, ether_sprintf(addr), key_idx);
351
352 memset(&wk, 0, sizeof(wk));
353 if (addr != NULL) {
354 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
355 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
356 } else {
357 wk.idk_keyix = key_idx;
358 }
359
360 return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
361 }
362
363 static int
364 bsd_set_key(const char *ifname, void *priv, const char *alg,
365 const u8 *addr, int key_idx,
366 const u8 *key, size_t key_len, int txkey)
367 {
368 struct bsd_driver_data *drv = priv;
369 struct hostapd_data *hapd = drv->hapd;
370 struct ieee80211req_key wk;
371 u_int8_t cipher;
372
373 if (strcmp(alg, "none") == 0)
374 return bsd_del_key(priv, addr, key_idx);
375
376 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
377 "%s: alg=%s addr=%s key_idx=%d\n",
378 __func__, alg, ether_sprintf(addr), key_idx);
379
380 if (strcmp(alg, "WEP") == 0)
381 cipher = IEEE80211_CIPHER_WEP;
382 else if (strcmp(alg, "TKIP") == 0)
383 cipher = IEEE80211_CIPHER_TKIP;
384 else if (strcmp(alg, "CCMP") == 0)
385 cipher = IEEE80211_CIPHER_AES_CCM;
386 else {
387 printf("%s: unknown/unsupported algorithm %s\n",
388 __func__, alg);
389 return -1;
390 }
391
392 if (key_len > sizeof(wk.ik_keydata)) {
393 printf("%s: key length %d too big\n", __func__, key_len);
394 return -3;
395 }
396
397 memset(&wk, 0, sizeof(wk));
398 wk.ik_type = cipher;
399 wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
400 if (addr == NULL) {
401 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
402 wk.ik_keyix = key_idx;
403 wk.ik_flags |= IEEE80211_KEY_DEFAULT | IEEE80211_KEY_GROUP;
404 } else {
405 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
406 wk.ik_keyix = IEEE80211_KEYIX_NONE;
407 }
408 wk.ik_keylen = key_len;
409 memcpy(wk.ik_keydata, key, key_len);
410
411 return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
412 }
413
414
415 static int
416 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
417 u8 *seq)
418 {
419 struct bsd_driver_data *drv = priv;
420 struct hostapd_data *hapd = drv->hapd;
421 struct ieee80211req_key wk;
422
423 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
424 "%s: addr=%s idx=%d\n", __func__, ether_sprintf(addr), idx);
425
426 memset(&wk, 0, sizeof(wk));
427 if (addr == NULL)
428 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
429 else
430 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
431 wk.ik_keyix = idx;
432
433 if (get80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
434 printf("Failed to get encryption.\n");
435 return -1;
436 } else {
437 /* NB: upper layer expects tsc in network order */
438 wk.ik_keytsc = htole64(wk.ik_keytsc);
439 memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
440 return 0;
441 }
442 }
443
444
445 static int
446 bsd_flush(void *priv)
447 {
448 u8 allsta[IEEE80211_ADDR_LEN];
449
450 memset(allsta, 0xff, IEEE80211_ADDR_LEN);
451 return bsd_sta_deauth(priv, allsta, IEEE80211_REASON_AUTH_LEAVE);
452 }
453
454
455 static int
456 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
457 const u8 *addr)
458 {
459 struct bsd_driver_data *drv = priv;
460 struct ieee80211req_sta_stats stats;
461
462 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
463 if (get80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats)) > 0) {
464 /* XXX? do packets counts include non-data frames? */
465 data->rx_packets = stats.is_stats.ns_rx_data;
466 data->rx_bytes = stats.is_stats.ns_rx_bytes;
467 data->tx_packets = stats.is_stats.ns_tx_data;
468 data->tx_bytes = stats.is_stats.ns_tx_bytes;
469 }
470 return 0;
471 }
472
473 static int
474 bsd_sta_clear_stats(void *priv, const u8 *addr)
475 {
476 struct bsd_driver_data *drv = priv;
477 struct hostapd_data *hapd = drv->hapd;
478 struct ieee80211req_sta_stats stats;
479
480 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "%s: addr=%s\n",
481 __func__, ether_sprintf(addr));
482
483 /* zero station statistics */
484 memset(&stats, 0, sizeof(stats));
485 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
486 return set80211var(drv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats));
487 }
488
489 static int
490 bsd_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
491 {
492 /*
493 * Do nothing; we setup parameters at startup that define the
494 * contents of the beacon information element.
495 */
496 return 0;
497 }
498
499 static int
500 bsd_sta_deauth(void *priv, const u8 *addr, int reason_code)
501 {
502 struct bsd_driver_data *drv = priv;
503 struct hostapd_data *hapd = drv->hapd;
504 struct ieee80211req_mlme mlme;
505
506 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
507 "%s: addr=%s reason_code=%d\n",
508 __func__, ether_sprintf(addr), reason_code);
509
510 mlme.im_op = IEEE80211_MLME_DEAUTH;
511 mlme.im_reason = reason_code;
512 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
513 return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
514 }
515
516 static int
517 bsd_sta_disassoc(void *priv, const u8 *addr, int reason_code)
518 {
519 struct bsd_driver_data *drv = priv;
520 struct hostapd_data *hapd = drv->hapd;
521 struct ieee80211req_mlme mlme;
522
523 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL,
524 "%s: addr=%s reason_code=%d\n",
525 __func__, ether_sprintf(addr), reason_code);
526
527 mlme.im_reason = reason_code;
528 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
529 return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
530 }
531
532 static int
533 bsd_del_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
534 {
535 struct hostapd_data *hapd = drv->hapd;
536 struct hostapd_bss_config *conf = hapd->conf;
537 struct sta_info *sta;
538
539 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
540 HOSTAPD_LEVEL_INFO, "deassociated");
541
542 sta = ap_get_sta(hapd, addr);
543 if (sta != NULL) {
544 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
545 if (conf->wpa)
546 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
547 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
548 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
549 ap_free_sta(hapd, sta);
550 }
551 return 0;
552 }
553
554 static int
555 bsd_new_sta(struct bsd_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
556 {
557 struct hostapd_data *hapd = drv->hapd;
558 struct hostapd_bss_config *conf = hapd->conf;
559 struct sta_info *sta;
560 struct ieee80211req_wpaie ie;
561 int new_assoc, ielen, res;
562
563 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
564 HOSTAPD_LEVEL_INFO, "associated");
565
566 sta = ap_sta_add(hapd, addr);
567 if (sta == NULL)
568 return -1;
569 /*
570 * Fetch and validate any negotiated WPA/RSN parameters.
571 */
572 if (conf->wpa) {
573 memset(&ie, 0, sizeof(ie));
574 memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
575 if (get80211var(drv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
576 printf("Failed to get WPA/RSN information element.\n");
577 return -1; /* XXX not right */
578 }
579 if (ie.wpa_ie[1] == 0) {
580 printf("No WPA/RSN information element for station!\n");
581 return -1; /* XXX not right */
582 }
583 if (sta->wpa_sm == NULL)
584 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
585 sta->addr);
586 if (sta->wpa_sm == NULL) {
587 printf("Failed to initialize WPA state machine\n");
588 return -1;
589 }
590 ielen = 2 + ie.wpa_ie[1];
591 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
592 ie.wpa_ie, ielen);
593 if (res != WPA_IE_OK) {
594 printf("WPA/RSN information element rejected? "
595 "(res %u)\n", res);
596 return -1;
597 }
598 }
599
600 /*
601 * Now that the internal station state is setup
602 * kick the authenticator into action.
603 */
604 new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
605 sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
606 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
607 hostapd_new_assoc_sta(hapd, sta, !new_assoc);
608 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
609
610 return 0;
611 }
612
613 #include <net/route.h>
614 #include <netproto/802_11/ieee80211_dragonfly.h>
615
616 static void
617 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
618 {
619 struct bsd_driver_data *drv = ctx;
620 struct hostapd_data *hapd = drv->hapd;
621 char buf[2048];
622 struct if_announcemsghdr *ifan;
623 struct rt_msghdr *rtm;
624 struct ieee80211_michael_event *mic;
625 struct ieee80211_join_event *join;
626 struct ieee80211_leave_event *leave;
627 int n;
628
629 n = read(sock, buf, sizeof(buf));
630 if (n < 0) {
631 if (errno != EINTR && errno != EAGAIN)
632 perror("read(PF_ROUTE)");
633 return;
634 }
635
636 rtm = (struct rt_msghdr *) buf;
637 if (rtm->rtm_version != RTM_VERSION) {
638 wpa_printf(MSG_DEBUG, "Routing message version %d not "
639 "understood\n", rtm->rtm_version);
640 return;
641 }
642 ifan = (struct if_announcemsghdr *) rtm;
643 switch (rtm->rtm_type) {
644 case RTM_IEEE80211:
645 switch (ifan->ifan_what) {
646 case RTM_IEEE80211_ASSOC:
647 case RTM_IEEE80211_REASSOC:
648 case RTM_IEEE80211_DISASSOC:
649 case RTM_IEEE80211_SCAN:
650 break;
651 case RTM_IEEE80211_LEAVE:
652 leave = (struct ieee80211_leave_event *) &ifan[1];
653 bsd_del_sta(drv, leave->iev_addr);
654 break;
655 case RTM_IEEE80211_JOIN:
656 #ifdef RTM_IEEE80211_REJOIN
657 case RTM_IEEE80211_REJOIN:
658 #endif
659 join = (struct ieee80211_join_event *) &ifan[1];
660 bsd_new_sta(drv, join->iev_addr);
661 break;
662 case RTM_IEEE80211_REPLAY:
663 /* ignore */
664 break;
665 case RTM_IEEE80211_MICHAEL:
666 mic = (struct ieee80211_michael_event *) &ifan[1];
667 wpa_printf(MSG_DEBUG,
668 "Michael MIC failure wireless event: "
669 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
670 MAC2STR(mic->iev_src));
671 ieee80211_michael_mic_failure(hapd, mic->iev_src, 1);
672 break;
673 }
674 break;
675 }
676 }
677
678 static int
679 bsd_wireless_event_init(void *priv)
680 {
681 struct bsd_driver_data *drv = priv;
682 int s;
683
684 drv->wext_sock = -1;
685
686 s = socket(PF_ROUTE, SOCK_RAW, 0);
687 if (s < 0) {
688 perror("socket(PF_ROUTE,SOCK_RAW)");
689 return -1;
690 }
691 eloop_register_read_sock(s, bsd_wireless_event_receive, drv, NULL);
692 drv->wext_sock = s;
693
694 return 0;
695 }
696
697 static void
698 bsd_wireless_event_deinit(void *priv)
699 {
700 struct bsd_driver_data *drv = priv;
701
702 if (drv != NULL) {
703 if (drv->wext_sock < 0)
704 return;
705 eloop_unregister_read_sock(drv->wext_sock);
706 close(drv->wext_sock);
707 }
708 }
709
710
711 static int
712 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
713 int encrypt, const u8 *own_addr)
714 {
715 struct bsd_driver_data *drv = priv;
716 struct hostapd_data *hapd = drv->hapd;
717 unsigned char buf[3000];
718 unsigned char *bp = buf;
719 struct l2_ethhdr *eth;
720 size_t len;
721 int status;
722
723 /*
724 * Prepend the Etherent header. If the caller left us
725 * space at the front we could just insert it but since
726 * we don't know we copy to a local buffer. Given the frequency
727 * and size of frames this probably doesn't matter.
728 */
729 len = data_len + sizeof(struct l2_ethhdr);
730 if (len > sizeof(buf)) {
731 bp = malloc(len);
732 if (bp == NULL) {
733 printf("EAPOL frame discarded, cannot malloc temp "
734 "buffer of size %u!\n", len);
735 return -1;
736 }
737 }
738 eth = (struct l2_ethhdr *) bp;
739 memcpy(eth->h_dest, addr, ETH_ALEN);
740 memcpy(eth->h_source, own_addr, ETH_ALEN);
741 eth->h_proto = htons(ETH_P_EAPOL);
742 memcpy(eth+1, data, data_len);
743
744 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
745
746 status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
747
748 if (bp != buf)
749 free(bp);
750 return status;
751 }
752
753 static void
754 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
755 {
756 struct bsd_driver_data *drv = ctx;
757 struct hostapd_data *hapd = drv->hapd;
758 struct sta_info *sta;
759
760 sta = ap_get_sta(hapd, src_addr);
761 if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
762 printf("Data frame from not associated STA %s\n",
763 ether_sprintf(src_addr));
764 /* XXX cannot happen */
765 return;
766 }
767 ieee802_1x_receive(hapd, src_addr, buf + sizeof(struct l2_ethhdr),
768 len - sizeof(struct l2_ethhdr));
769 }
770
771 static int
772 bsd_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
773 {
774 struct bsd_driver_data *drv = priv;
775 struct hostapd_data *hapd = drv->hapd;
776 int ssid_len = get80211var(priv, IEEE80211_IOC_SSID, buf, len);
777
778 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "%s: ssid=\"%.*s\"\n",
779 __func__, ssid_len, buf);
780
781 return ssid_len;
782 }
783
784 static int
785 bsd_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
786 {
787 struct bsd_driver_data *drv = priv;
788 struct hostapd_data *hapd = drv->hapd;
789
790 HOSTAPD_DEBUG(HOSTAPD_DEBUG_MINIMAL, "%s: ssid=\"%.*s\"\n",
791 __func__, len, buf);
792
793 return set80211var(priv, IEEE80211_IOC_SSID, buf, len);
794 }
795
796 static int
797 bsd_set_countermeasures(void *priv, int enabled)
798 {
799 struct bsd_driver_data *drv = priv;
800
801 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
802 return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
803 }
804
805 static int
806 bsd_init(struct hostapd_data *hapd)
807 {
808 struct bsd_driver_data *drv;
809
810 drv = malloc(sizeof(struct bsd_driver_data));
811 if (drv == NULL) {
812 printf("Could not allocate memory for bsd driver data\n");
813 goto bad;
814 }
815
816 memset(drv, 0, sizeof(*drv));
817 drv->ops = bsd_driver_ops;
818 drv->hapd = hapd;
819 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
820 if (drv->ioctl_sock < 0) {
821 perror("socket[PF_INET,SOCK_DGRAM]");
822 goto bad;
823 }
824 memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
825
826 drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
827 handle_read, drv, 1);
828 if (drv->sock_xmit == NULL)
829 goto bad;
830 if (l2_packet_get_own_addr(drv->sock_xmit, hapd->own_addr))
831 goto bad;
832
833 bsd_set_iface_flags(drv, 0); /* mark down during setup */
834
835 hapd->driver = &drv->ops;
836 return 0;
837 bad:
838 if (drv != NULL) {
839 if (drv->sock_xmit != NULL)
840 l2_packet_deinit(drv->sock_xmit);
841 if (drv->ioctl_sock >= 0)
842 close(drv->ioctl_sock);
843 free(drv);
844 }
845 return -1;
846 }
847
848
849 static void
850 bsd_deinit(void *priv)
851 {
852 struct bsd_driver_data *drv = priv;
853
854 drv->hapd->driver = NULL;
855
856 (void) bsd_set_iface_flags(drv, 0);
857 if (drv->ioctl_sock >= 0)
858 close(drv->ioctl_sock);
859 if (drv->sock_xmit != NULL)
860 l2_packet_deinit(drv->sock_xmit);
861 free(drv);
862 }
863
864 static const struct driver_ops bsd_driver_ops = {
865 .name = "bsd",
866 .init = bsd_init,
867 .deinit = bsd_deinit,
868 .set_ieee8021x = bsd_set_ieee8021x,
869 .set_privacy = bsd_set_privacy,
870 .set_encryption = bsd_set_key,
871 .get_seqnum = bsd_get_seqnum,
872 .flush = bsd_flush,
873 .set_generic_elem = bsd_set_opt_ie,
874 .wireless_event_init = bsd_wireless_event_init,
875 .wireless_event_deinit = bsd_wireless_event_deinit,
876 .sta_set_flags = bsd_sta_set_flags,
877 .read_sta_data = bsd_read_sta_driver_data,
878 .send_eapol = bsd_send_eapol,
879 .sta_disassoc = bsd_sta_disassoc,
880 .sta_deauth = bsd_sta_deauth,
881 .set_ssid = bsd_set_ssid,
882 .get_ssid = bsd_get_ssid,
883 .set_countermeasures = bsd_set_countermeasures,
884 .sta_clear_stats = bsd_sta_clear_stats,
885 };
886
887 void bsd_driver_register(void)
888 {
889 driver_register(bsd_driver_ops.name, &bsd_driver_ops);
890 }
A repo for keeping AMD64 port code before merging with the master