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bsd: Mark define sta_set_flags() only for hostapd
[thirdparty/hostap.git] / src / drivers / driver_bsd.c
1 /*
2 * WPA Supplicant - driver interaction with BSD net80211 layer
3 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
4 * Copyright (c) 2004, 2Wire, Inc
5 *
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
8 */
9
10 #include "includes.h"
11 #include <sys/ioctl.h>
12 #include <sys/sysctl.h>
13
14 #include "common.h"
15 #include "driver.h"
16 #include "eloop.h"
17 #include "common/ieee802_11_defs.h"
18 #include "common/wpa_common.h"
19
20 #include <net/if.h>
21 #include <net/if_media.h>
22
23 #ifdef __NetBSD__
24 #include <net/if_ether.h>
25 #else
26 #include <net/ethernet.h>
27 #endif
28 #include <net/route.h>
29
30 #ifdef __DragonFly__
31 #include <netproto/802_11/ieee80211_ioctl.h>
32 #include <netproto/802_11/ieee80211_dragonfly.h>
33 #else /* __DragonFly__ */
34 #ifdef __GLIBC__
35 #include <netinet/ether.h>
36 #endif /* __GLIBC__ */
37 #include <net80211/ieee80211.h>
38 #include <net80211/ieee80211_ioctl.h>
39 #include <net80211/ieee80211_crypto.h>
40 #endif /* __DragonFly__ || __GLIBC__ */
41 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
42 #include <net80211/ieee80211_freebsd.h>
43 #endif
44 #if __NetBSD__
45 #include <net80211/ieee80211_netbsd.h>
46 #endif
47
48 #include "l2_packet/l2_packet.h"
49
50 struct bsd_driver_data {
51 struct hostapd_data *hapd; /* back pointer */
52
53 int sock; /* open socket for 802.11 ioctls */
54 struct l2_packet_data *sock_xmit;/* raw packet xmit socket */
55 int route; /* routing socket for events */
56 char ifname[IFNAMSIZ+1]; /* interface name */
57 unsigned int ifindex; /* interface index */
58 void *ctx;
59 struct wpa_driver_capa capa; /* driver capability */
60 int is_ap; /* Access point mode */
61 int prev_roaming; /* roaming state to restore on deinit */
62 int prev_privacy; /* privacy state to restore on deinit */
63 int prev_wpa; /* wpa state to restore on deinit */
64 enum ieee80211_opmode opmode; /* operation mode */
65 };
66
67 /* Generic functions for hostapd and wpa_supplicant */
68
69 static enum ieee80211_opmode
70 get80211opmode(struct bsd_driver_data *drv)
71 {
72 struct ifmediareq ifmr;
73
74 (void) memset(&ifmr, 0, sizeof(ifmr));
75 (void) strncpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
76
77 if (ioctl(drv->sock, SIOCGIFMEDIA, (caddr_t)&ifmr) >= 0) {
78 if (ifmr.ifm_current & IFM_IEEE80211_ADHOC) {
79 if (ifmr.ifm_current & IFM_FLAG0)
80 return IEEE80211_M_AHDEMO;
81 else
82 return IEEE80211_M_IBSS;
83 }
84 if (ifmr.ifm_current & IFM_IEEE80211_HOSTAP)
85 return IEEE80211_M_HOSTAP;
86 if (ifmr.ifm_current & IFM_IEEE80211_MONITOR)
87 return IEEE80211_M_MONITOR;
88 if (ifmr.ifm_current & IFM_IEEE80211_MBSS)
89 return IEEE80211_M_MBSS;
90 }
91 return IEEE80211_M_STA;
92 }
93
94
95 static int
96 bsd_set80211(void *priv, int op, int val, const void *arg, int arg_len)
97 {
98 struct bsd_driver_data *drv = priv;
99 struct ieee80211req ireq;
100
101 os_memset(&ireq, 0, sizeof(ireq));
102 os_strlcpy(ireq.i_name, drv->ifname, sizeof(ireq.i_name));
103 ireq.i_type = op;
104 ireq.i_val = val;
105 ireq.i_data = (void *) arg;
106 ireq.i_len = arg_len;
107
108 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
109 wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, val=%u, "
110 "arg_len=%u]: %s", op, val, arg_len,
111 strerror(errno));
112 return -1;
113 }
114 return 0;
115 }
116
117 static int
118 bsd_get80211(void *priv, struct ieee80211req *ireq, int op, void *arg,
119 int arg_len)
120 {
121 struct bsd_driver_data *drv = priv;
122
123 os_memset(ireq, 0, sizeof(*ireq));
124 os_strlcpy(ireq->i_name, drv->ifname, sizeof(ireq->i_name));
125 ireq->i_type = op;
126 ireq->i_len = arg_len;
127 ireq->i_data = arg;
128
129 if (ioctl(drv->sock, SIOCG80211, ireq) < 0) {
130 wpa_printf(MSG_ERROR, "ioctl[SIOCS80211, op=%u, "
131 "arg_len=%u]: %s", op, arg_len, strerror(errno));
132 return -1;
133 }
134 return 0;
135 }
136
137 static int
138 get80211var(struct bsd_driver_data *drv, int op, void *arg, int arg_len)
139 {
140 struct ieee80211req ireq;
141
142 if (bsd_get80211(drv, &ireq, op, arg, arg_len) < 0)
143 return -1;
144 return ireq.i_len;
145 }
146
147 static int
148 set80211var(struct bsd_driver_data *drv, int op, const void *arg, int arg_len)
149 {
150 return bsd_set80211(drv, op, 0, arg, arg_len);
151 }
152
153 static int
154 set80211param(struct bsd_driver_data *drv, int op, int arg)
155 {
156 return bsd_set80211(drv, op, arg, NULL, 0);
157 }
158
159 static int
160 bsd_get_ssid(void *priv, u8 *ssid, int len)
161 {
162 struct bsd_driver_data *drv = priv;
163 #ifdef SIOCG80211NWID
164 struct ieee80211_nwid nwid;
165 struct ifreq ifr;
166
167 os_memset(&ifr, 0, sizeof(ifr));
168 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
169 ifr.ifr_data = (void *)&nwid;
170 if (ioctl(drv->sock, SIOCG80211NWID, &ifr) < 0 ||
171 nwid.i_len > IEEE80211_NWID_LEN)
172 return -1;
173 os_memcpy(ssid, nwid.i_nwid, nwid.i_len);
174 return nwid.i_len;
175 #else
176 return get80211var(drv, IEEE80211_IOC_SSID, ssid, IEEE80211_NWID_LEN);
177 #endif
178 }
179
180 static int
181 bsd_set_ssid(void *priv, const u8 *ssid, int ssid_len)
182 {
183 struct bsd_driver_data *drv = priv;
184 #ifdef SIOCS80211NWID
185 struct ieee80211_nwid nwid;
186 struct ifreq ifr;
187
188 os_memcpy(nwid.i_nwid, ssid, ssid_len);
189 nwid.i_len = ssid_len;
190 os_memset(&ifr, 0, sizeof(ifr));
191 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
192 ifr.ifr_data = (void *)&nwid;
193 return ioctl(drv->sock, SIOCS80211NWID, &ifr);
194 #else
195 return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
196 #endif
197 }
198
199 static int
200 bsd_get_if_media(void *priv)
201 {
202 struct bsd_driver_data *drv = priv;
203 struct ifmediareq ifmr;
204
205 os_memset(&ifmr, 0, sizeof(ifmr));
206 os_strlcpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
207
208 if (ioctl(drv->sock, SIOCGIFMEDIA, &ifmr) < 0) {
209 wpa_printf(MSG_ERROR, "%s: SIOCGIFMEDIA %s", __func__,
210 strerror(errno));
211 return -1;
212 }
213
214 return ifmr.ifm_current;
215 }
216
217 static int
218 bsd_set_if_media(void *priv, int media)
219 {
220 struct bsd_driver_data *drv = priv;
221 struct ifreq ifr;
222
223 os_memset(&ifr, 0, sizeof(ifr));
224 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
225 ifr.ifr_media = media;
226
227 if (ioctl(drv->sock, SIOCSIFMEDIA, &ifr) < 0) {
228 wpa_printf(MSG_ERROR, "%s: SIOCSIFMEDIA %s", __func__,
229 strerror(errno));
230 return -1;
231 }
232
233 return 0;
234 }
235
236 static int
237 bsd_set_mediaopt(void *priv, uint32_t mask, uint32_t mode)
238 {
239 int media = bsd_get_if_media(priv);
240
241 if (media < 0)
242 return -1;
243 media &= ~mask;
244 media |= mode;
245 if (bsd_set_if_media(priv, media) < 0)
246 return -1;
247 return 0;
248 }
249
250 static int
251 bsd_del_key(void *priv, const u8 *addr, int key_idx)
252 {
253 struct ieee80211req_del_key wk;
254
255 os_memset(&wk, 0, sizeof(wk));
256 if (addr == NULL) {
257 wpa_printf(MSG_DEBUG, "%s: key_idx=%d", __func__, key_idx);
258 wk.idk_keyix = key_idx;
259 } else {
260 wpa_printf(MSG_DEBUG, "%s: addr=" MACSTR, __func__,
261 MAC2STR(addr));
262 os_memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
263 wk.idk_keyix = (u_int8_t) IEEE80211_KEYIX_NONE; /* XXX */
264 }
265
266 return set80211var(priv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
267 }
268
269 static int
270 bsd_send_mlme_param(void *priv, const u8 op, const u16 reason, const u8 *addr)
271 {
272 struct ieee80211req_mlme mlme;
273
274 os_memset(&mlme, 0, sizeof(mlme));
275 mlme.im_op = op;
276 mlme.im_reason = reason;
277 os_memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
278 return set80211var(priv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
279 }
280
281 static int
282 bsd_ctrl_iface(void *priv, int enable)
283 {
284 struct bsd_driver_data *drv = priv;
285 struct ifreq ifr;
286
287 os_memset(&ifr, 0, sizeof(ifr));
288 os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
289
290 if (ioctl(drv->sock, SIOCGIFFLAGS, &ifr) < 0) {
291 perror("ioctl[SIOCGIFFLAGS]");
292 return -1;
293 }
294
295 if (enable) {
296 if (ifr.ifr_flags & IFF_UP)
297 return 0;
298 ifr.ifr_flags |= IFF_UP;
299 } else {
300 if (!(ifr.ifr_flags & IFF_UP))
301 return 0;
302 ifr.ifr_flags &= ~IFF_UP;
303 }
304
305 if (ioctl(drv->sock, SIOCSIFFLAGS, &ifr) < 0) {
306 perror("ioctl[SIOCSIFFLAGS]");
307 return -1;
308 }
309
310 return 0;
311 }
312
313 static int
314 bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
315 const unsigned char *addr, int key_idx, int set_tx, const u8 *seq,
316 size_t seq_len, const u8 *key, size_t key_len)
317 {
318 struct ieee80211req_key wk;
319 struct bsd_driver_data *drv = priv;
320
321 wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
322 "seq_len=%zu key_len=%zu", __func__, alg, addr, key_idx,
323 set_tx, seq_len, key_len);
324
325 if (alg == WPA_ALG_NONE) {
326 #ifndef HOSTAPD
327 if (addr == NULL || is_broadcast_ether_addr(addr))
328 return bsd_del_key(priv, NULL, key_idx);
329 else
330 #endif /* HOSTAPD */
331 return bsd_del_key(priv, addr, key_idx);
332 }
333
334 os_memset(&wk, 0, sizeof(wk));
335 switch (alg) {
336 case WPA_ALG_WEP:
337 wk.ik_type = IEEE80211_CIPHER_WEP;
338 break;
339 case WPA_ALG_TKIP:
340 wk.ik_type = IEEE80211_CIPHER_TKIP;
341 break;
342 case WPA_ALG_CCMP:
343 wk.ik_type = IEEE80211_CIPHER_AES_CCM;
344 break;
345 default:
346 wpa_printf(MSG_ERROR, "%s: unknown alg=%d", __func__, alg);
347 return -1;
348 }
349
350 wk.ik_flags = IEEE80211_KEY_RECV;
351 if (set_tx)
352 wk.ik_flags |= IEEE80211_KEY_XMIT;
353
354 if (addr == NULL) {
355 os_memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
356 wk.ik_keyix = key_idx;
357 } else {
358 os_memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
359 /*
360 * Deduce whether group/global or unicast key by checking
361 * the address (yech). Note also that we can only mark global
362 * keys default; doing this for a unicast key is an error.
363 */
364 if (is_broadcast_ether_addr(addr)) {
365 wk.ik_flags |= IEEE80211_KEY_GROUP;
366 wk.ik_keyix = key_idx;
367 } else {
368 wk.ik_keyix = key_idx == 0 ? IEEE80211_KEYIX_NONE :
369 key_idx;
370 }
371 }
372 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
373 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
374 #ifndef HOSTAPD
375 /*
376 * Ignore replay failures in IBSS and AHDEMO mode.
377 */
378 if (drv->opmode == IEEE80211_M_IBSS ||
379 drv->opmode == IEEE80211_M_AHDEMO)
380 wk.ik_flags |= IEEE80211_KEY_NOREPLAY;
381 #endif /* HOSTAPD */
382 wk.ik_keylen = key_len;
383 if (seq) {
384 #ifdef WORDS_BIGENDIAN
385 /*
386 * wk.ik_keyrsc is in host byte order (big endian), need to
387 * swap it to match with the byte order used in WPA.
388 */
389 int i;
390 u8 *keyrsc = (u8 *) &wk.ik_keyrsc;
391 for (i = 0; i < seq_len; i++)
392 keyrsc[WPA_KEY_RSC_LEN - i - 1] = seq[i];
393 #else /* WORDS_BIGENDIAN */
394 os_memcpy(&wk.ik_keyrsc, seq, seq_len);
395 #endif /* WORDS_BIGENDIAN */
396 }
397 os_memcpy(wk.ik_keydata, key, key_len);
398
399 return set80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
400 }
401
402 static int
403 bsd_configure_wpa(void *priv, struct wpa_bss_params *params)
404 {
405 #ifndef IEEE80211_IOC_APPIE
406 static const char *ciphernames[] =
407 { "WEP", "TKIP", "AES-OCB", "AES-CCM", "CKIP", "NONE" };
408 int v;
409
410 switch (params->wpa_group) {
411 case WPA_CIPHER_CCMP:
412 v = IEEE80211_CIPHER_AES_CCM;
413 break;
414 case WPA_CIPHER_TKIP:
415 v = IEEE80211_CIPHER_TKIP;
416 break;
417 case WPA_CIPHER_WEP104:
418 v = IEEE80211_CIPHER_WEP;
419 break;
420 case WPA_CIPHER_WEP40:
421 v = IEEE80211_CIPHER_WEP;
422 break;
423 case WPA_CIPHER_NONE:
424 v = IEEE80211_CIPHER_NONE;
425 break;
426 default:
427 printf("Unknown group key cipher %u\n",
428 params->wpa_group);
429 return -1;
430 }
431 wpa_printf(MSG_DEBUG, "%s: group key cipher=%s (%u)",
432 __func__, ciphernames[v], v);
433 if (set80211param(priv, IEEE80211_IOC_MCASTCIPHER, v)) {
434 printf("Unable to set group key cipher to %u (%s)\n",
435 v, ciphernames[v]);
436 return -1;
437 }
438 if (v == IEEE80211_CIPHER_WEP) {
439 /* key length is done only for specific ciphers */
440 v = (params->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
441 if (set80211param(priv, IEEE80211_IOC_MCASTKEYLEN, v)) {
442 printf("Unable to set group key length to %u\n", v);
443 return -1;
444 }
445 }
446
447 v = 0;
448 if (params->wpa_pairwise & WPA_CIPHER_CCMP)
449 v |= 1<<IEEE80211_CIPHER_AES_CCM;
450 if (params->wpa_pairwise & WPA_CIPHER_TKIP)
451 v |= 1<<IEEE80211_CIPHER_TKIP;
452 if (params->wpa_pairwise & WPA_CIPHER_NONE)
453 v |= 1<<IEEE80211_CIPHER_NONE;
454 wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
455 if (set80211param(priv, IEEE80211_IOC_UCASTCIPHERS, v)) {
456 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
457 return -1;
458 }
459
460 wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
461 __func__, params->wpa_key_mgmt);
462 if (set80211param(priv, IEEE80211_IOC_KEYMGTALGS,
463 params->wpa_key_mgmt)) {
464 printf("Unable to set key management algorithms to 0x%x\n",
465 params->wpa_key_mgmt);
466 return -1;
467 }
468
469 v = 0;
470 if (params->rsn_preauth)
471 v |= BIT(0);
472 wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
473 __func__, params->rsn_preauth);
474 if (set80211param(priv, IEEE80211_IOC_RSNCAPS, v)) {
475 printf("Unable to set RSN capabilities to 0x%x\n", v);
476 return -1;
477 }
478 #endif /* IEEE80211_IOC_APPIE */
479
480 wpa_printf(MSG_DEBUG, "%s: enable WPA= 0x%x", __func__, params->wpa);
481 if (set80211param(priv, IEEE80211_IOC_WPA, params->wpa)) {
482 printf("Unable to set WPA to %u\n", params->wpa);
483 return -1;
484 }
485 return 0;
486 }
487
488 static int
489 bsd_set_ieee8021x(void *priv, struct wpa_bss_params *params)
490 {
491 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, params->enabled);
492
493 if (!params->enabled) {
494 /* XXX restore state */
495 return set80211param(priv, IEEE80211_IOC_AUTHMODE,
496 IEEE80211_AUTH_AUTO);
497 }
498 if (!params->wpa && !params->ieee802_1x) {
499 wpa_printf(MSG_ERROR, "%s: No 802.1X or WPA enabled",
500 __func__);
501 return -1;
502 }
503 if (params->wpa && bsd_configure_wpa(priv, params) != 0) {
504 wpa_printf(MSG_ERROR, "%s: Failed to configure WPA state",
505 __func__);
506 return -1;
507 }
508 if (set80211param(priv, IEEE80211_IOC_AUTHMODE,
509 (params->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
510 wpa_printf(MSG_ERROR, "%s: Failed to enable WPA/802.1X",
511 __func__);
512 return -1;
513 }
514 return bsd_ctrl_iface(priv, 1);
515 }
516
517 #ifdef HOSTAPD
518 static int
519 bsd_set_sta_authorized(void *priv, const u8 *addr,
520 int total_flags, int flags_or, int flags_and)
521 {
522 int authorized = -1;
523
524 /* For now, only support setting Authorized flag */
525 if (flags_or & WPA_STA_AUTHORIZED)
526 authorized = 1;
527 if (!(flags_and & WPA_STA_AUTHORIZED))
528 authorized = 0;
529
530 if (authorized < 0)
531 return 0;
532
533 return bsd_send_mlme_param(priv, authorized ?
534 IEEE80211_MLME_AUTHORIZE :
535 IEEE80211_MLME_UNAUTHORIZE, 0, addr);
536 }
537 #endif /* HOSTAPD */
538
539 static void
540 bsd_new_sta(void *priv, void *ctx, u8 addr[IEEE80211_ADDR_LEN])
541 {
542 struct ieee80211req_wpaie ie;
543 int ielen = 0;
544 u8 *iebuf = NULL;
545
546 /*
547 * Fetch and validate any negotiated WPA/RSN parameters.
548 */
549 memset(&ie, 0, sizeof(ie));
550 memcpy(ie.wpa_macaddr, addr, IEEE80211_ADDR_LEN);
551 if (get80211var(priv, IEEE80211_IOC_WPAIE, &ie, sizeof(ie)) < 0) {
552 printf("Failed to get WPA/RSN information element.\n");
553 goto no_ie;
554 }
555 iebuf = ie.wpa_ie;
556 ielen = ie.wpa_ie[1];
557 if (ielen == 0)
558 iebuf = NULL;
559 else
560 ielen += 2;
561
562 no_ie:
563 drv_event_assoc(ctx, addr, iebuf, ielen, 0);
564 }
565
566 static int
567 bsd_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
568 int encrypt, const u8 *own_addr, u32 flags)
569 {
570 struct bsd_driver_data *drv = priv;
571
572 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", data, data_len);
573
574 return l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, data,
575 data_len);
576 }
577
578 static int
579 bsd_set_freq(void *priv, struct hostapd_freq_params *freq)
580 {
581 struct bsd_driver_data *drv = priv;
582 #ifdef SIOCS80211CHANNEL
583 struct ieee80211chanreq creq;
584 #endif /* SIOCS80211CHANNEL */
585 u32 mode;
586 int channel = freq->channel;
587
588 if (channel < 14) {
589 mode =
590 #ifdef CONFIG_IEEE80211N
591 freq->ht_enabled ? IFM_IEEE80211_11NG :
592 #endif /* CONFIG_IEEE80211N */
593 IFM_IEEE80211_11G;
594 } else if (channel == 14) {
595 mode = IFM_IEEE80211_11B;
596 } else {
597 mode =
598 #ifdef CONFIG_IEEE80211N
599 freq->ht_enabled ? IFM_IEEE80211_11NA :
600 #endif /* CONFIG_IEEE80211N */
601 IFM_IEEE80211_11A;
602 }
603 if (bsd_set_mediaopt(drv, IFM_MMASK, mode) < 0) {
604 wpa_printf(MSG_ERROR, "%s: failed to set modulation mode",
605 __func__);
606 return -1;
607 }
608
609 #ifdef SIOCS80211CHANNEL
610 os_memset(&creq, 0, sizeof(creq));
611 os_strlcpy(creq.i_name, drv->ifname, sizeof(creq.i_name));
612 creq.i_channel = (u_int16_t)channel;
613 return ioctl(drv->sock, SIOCS80211CHANNEL, &creq);
614 #else /* SIOCS80211CHANNEL */
615 return set80211param(priv, IEEE80211_IOC_CHANNEL, channel);
616 #endif /* SIOCS80211CHANNEL */
617 }
618
619 static int
620 bsd_set_opt_ie(void *priv, const u8 *ie, size_t ie_len)
621 {
622 #ifdef IEEE80211_IOC_APPIE
623 wpa_printf(MSG_DEBUG, "%s: set WPA+RSN ie (len %lu)", __func__,
624 (unsigned long)ie_len);
625 return bsd_set80211(priv, IEEE80211_IOC_APPIE, IEEE80211_APPIE_WPA,
626 ie, ie_len);
627 #endif /* IEEE80211_IOC_APPIE */
628 return 0;
629 }
630
631 static int
632 rtbuf_len(void)
633 {
634 size_t len;
635
636 int mib[6] = {CTL_NET, AF_ROUTE, 0, AF_INET, NET_RT_DUMP, 0};
637
638 if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
639 wpa_printf(MSG_WARNING, "%s failed: %s\n", __func__,
640 strerror(errno));
641 len = 2048;
642 }
643
644 return len;
645 }
646
647 #ifdef HOSTAPD
648
649 /*
650 * Avoid conflicts with hostapd definitions by undefining couple of defines
651 * from net80211 header files.
652 */
653 #undef RSN_VERSION
654 #undef WPA_VERSION
655 #undef WPA_OUI_TYPE
656
657 static int bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
658 int reason_code);
659
660 static const char *
661 ether_sprintf(const u8 *addr)
662 {
663 static char buf[sizeof(MACSTR)];
664
665 if (addr != NULL)
666 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
667 else
668 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
669 return buf;
670 }
671
672 static int
673 bsd_set_privacy(void *priv, int enabled)
674 {
675 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
676
677 return set80211param(priv, IEEE80211_IOC_PRIVACY, enabled);
678 }
679
680 static int
681 bsd_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
682 u8 *seq)
683 {
684 struct ieee80211req_key wk;
685
686 wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
687 __func__, ether_sprintf(addr), idx);
688
689 memset(&wk, 0, sizeof(wk));
690 if (addr == NULL)
691 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
692 else
693 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
694 wk.ik_keyix = idx;
695
696 if (get80211var(priv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk)) < 0) {
697 printf("Failed to get encryption.\n");
698 return -1;
699 }
700
701 #ifdef WORDS_BIGENDIAN
702 {
703 /*
704 * wk.ik_keytsc is in host byte order (big endian), need to
705 * swap it to match with the byte order used in WPA.
706 */
707 int i;
708 u8 tmp[WPA_KEY_RSC_LEN];
709 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
710 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
711 seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
712 }
713 }
714 #else /* WORDS_BIGENDIAN */
715 memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
716 #endif /* WORDS_BIGENDIAN */
717 return 0;
718 }
719
720
721 static int
722 bsd_flush(void *priv)
723 {
724 u8 allsta[IEEE80211_ADDR_LEN];
725
726 memset(allsta, 0xff, IEEE80211_ADDR_LEN);
727 return bsd_sta_deauth(priv, NULL, allsta, IEEE80211_REASON_AUTH_LEAVE);
728 }
729
730
731 static int
732 bsd_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
733 const u8 *addr)
734 {
735 struct ieee80211req_sta_stats stats;
736
737 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
738 if (get80211var(priv, IEEE80211_IOC_STA_STATS, &stats, sizeof(stats))
739 > 0) {
740 /* XXX? do packets counts include non-data frames? */
741 data->rx_packets = stats.is_stats.ns_rx_data;
742 data->rx_bytes = stats.is_stats.ns_rx_bytes;
743 data->tx_packets = stats.is_stats.ns_tx_data;
744 data->tx_bytes = stats.is_stats.ns_tx_bytes;
745 }
746 return 0;
747 }
748
749 static int
750 bsd_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr, int reason_code)
751 {
752 return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
753 addr);
754 }
755
756 static int
757 bsd_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
758 int reason_code)
759 {
760 return bsd_send_mlme_param(priv, IEEE80211_MLME_DISASSOC, reason_code,
761 addr);
762 }
763
764 static void
765 bsd_wireless_event_receive(int sock, void *ctx, void *sock_ctx)
766 {
767 struct bsd_driver_data *drv = ctx;
768 char *buf;
769 struct if_announcemsghdr *ifan;
770 struct rt_msghdr *rtm;
771 struct ieee80211_michael_event *mic;
772 struct ieee80211_join_event *join;
773 struct ieee80211_leave_event *leave;
774 int n, len;
775 union wpa_event_data data;
776
777 len = rtbuf_len();
778
779 buf = os_malloc(len);
780 if (buf == NULL) {
781 wpa_printf(MSG_ERROR, "%s os_malloc() failed\n", __func__);
782 return;
783 }
784
785 n = read(sock, buf, len);
786 if (n < 0) {
787 if (errno != EINTR && errno != EAGAIN)
788 wpa_printf(MSG_ERROR, "%s read() failed: %s\n",
789 __func__, strerror(errno));
790 os_free(buf);
791 return;
792 }
793
794 rtm = (struct rt_msghdr *) buf;
795 if (rtm->rtm_version != RTM_VERSION) {
796 wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
797 rtm->rtm_version);
798 os_free(buf);
799 return;
800 }
801 ifan = (struct if_announcemsghdr *) rtm;
802 switch (rtm->rtm_type) {
803 case RTM_IEEE80211:
804 switch (ifan->ifan_what) {
805 case RTM_IEEE80211_ASSOC:
806 case RTM_IEEE80211_REASSOC:
807 case RTM_IEEE80211_DISASSOC:
808 case RTM_IEEE80211_SCAN:
809 break;
810 case RTM_IEEE80211_LEAVE:
811 leave = (struct ieee80211_leave_event *) &ifan[1];
812 drv_event_disassoc(drv->hapd, leave->iev_addr);
813 break;
814 case RTM_IEEE80211_JOIN:
815 #ifdef RTM_IEEE80211_REJOIN
816 case RTM_IEEE80211_REJOIN:
817 #endif
818 join = (struct ieee80211_join_event *) &ifan[1];
819 bsd_new_sta(drv, drv->hapd, join->iev_addr);
820 break;
821 case RTM_IEEE80211_REPLAY:
822 /* ignore */
823 break;
824 case RTM_IEEE80211_MICHAEL:
825 mic = (struct ieee80211_michael_event *) &ifan[1];
826 wpa_printf(MSG_DEBUG,
827 "Michael MIC failure wireless event: "
828 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
829 MAC2STR(mic->iev_src));
830 os_memset(&data, 0, sizeof(data));
831 data.michael_mic_failure.unicast = 1;
832 data.michael_mic_failure.src = mic->iev_src;
833 wpa_supplicant_event(drv->hapd,
834 EVENT_MICHAEL_MIC_FAILURE, &data);
835 break;
836 }
837 break;
838 }
839 os_free(buf);
840 }
841
842 static void
843 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
844 {
845 struct bsd_driver_data *drv = ctx;
846 drv_event_eapol_rx(drv->hapd, src_addr, buf, len);
847 }
848
849 static void *
850 bsd_init(struct hostapd_data *hapd, struct wpa_init_params *params)
851 {
852 struct bsd_driver_data *drv;
853
854 drv = os_zalloc(sizeof(struct bsd_driver_data));
855 if (drv == NULL) {
856 printf("Could not allocate memory for bsd driver data\n");
857 goto bad;
858 }
859
860 drv->hapd = hapd;
861 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
862 if (drv->sock < 0) {
863 perror("socket[PF_INET,SOCK_DGRAM]");
864 goto bad;
865 }
866 os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
867
868 drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
869 handle_read, drv, 0);
870 if (drv->sock_xmit == NULL)
871 goto bad;
872 if (l2_packet_get_own_addr(drv->sock_xmit, params->own_addr))
873 goto bad;
874
875 /* mark down during setup */
876 if (bsd_ctrl_iface(drv, 0) < 0)
877 goto bad;
878
879 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
880 if (drv->route < 0) {
881 perror("socket(PF_ROUTE,SOCK_RAW)");
882 goto bad;
883 }
884 eloop_register_read_sock(drv->route, bsd_wireless_event_receive, drv,
885 NULL);
886
887 if (bsd_set_mediaopt(drv, IFM_OMASK, IFM_IEEE80211_HOSTAP) < 0) {
888 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
889 __func__);
890 goto bad;
891 }
892
893 return drv;
894 bad:
895 if (drv->sock_xmit != NULL)
896 l2_packet_deinit(drv->sock_xmit);
897 if (drv->sock >= 0)
898 close(drv->sock);
899 if (drv != NULL)
900 os_free(drv);
901 return NULL;
902 }
903
904
905 static void
906 bsd_deinit(void *priv)
907 {
908 struct bsd_driver_data *drv = priv;
909
910 if (drv->route >= 0) {
911 eloop_unregister_read_sock(drv->route);
912 close(drv->route);
913 }
914 bsd_ctrl_iface(drv, 0);
915 if (drv->sock >= 0)
916 close(drv->sock);
917 if (drv->sock_xmit != NULL)
918 l2_packet_deinit(drv->sock_xmit);
919 os_free(drv);
920 }
921
922 #else /* HOSTAPD */
923
924 static int
925 get80211param(struct bsd_driver_data *drv, int op)
926 {
927 struct ieee80211req ireq;
928
929 if (bsd_get80211(drv, &ireq, op, NULL, 0) < 0)
930 return -1;
931 return ireq.i_val;
932 }
933
934 static int
935 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
936 {
937 struct bsd_driver_data *drv = priv;
938 #ifdef SIOCG80211BSSID
939 struct ieee80211_bssid bs;
940
941 os_strlcpy(bs.i_name, drv->ifname, sizeof(bs.i_name));
942 if (ioctl(drv->sock, SIOCG80211BSSID, &bs) < 0)
943 return -1;
944 os_memcpy(bssid, bs.i_bssid, sizeof(bs.i_bssid));
945 return 0;
946 #else
947 return get80211var(drv, IEEE80211_IOC_BSSID,
948 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
949 #endif
950 }
951
952 static int
953 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
954 {
955 struct bsd_driver_data *drv = priv;
956 return bsd_get_ssid(drv, ssid, 0);
957 }
958
959 static int
960 wpa_driver_bsd_set_wpa_ie(struct bsd_driver_data *drv, const u8 *wpa_ie,
961 size_t wpa_ie_len)
962 {
963 #ifdef IEEE80211_IOC_APPIE
964 return bsd_set_opt_ie(drv, wpa_ie, wpa_ie_len);
965 #else /* IEEE80211_IOC_APPIE */
966 return set80211var(drv, IEEE80211_IOC_OPTIE, wpa_ie, wpa_ie_len);
967 #endif /* IEEE80211_IOC_APPIE */
968 }
969
970 static int
971 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
972 {
973 int ret = 0;
974
975 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
976 __FUNCTION__, wpa, privacy);
977
978 if (!wpa && wpa_driver_bsd_set_wpa_ie(priv, NULL, 0) < 0)
979 ret = -1;
980 if (set80211param(priv, IEEE80211_IOC_PRIVACY, privacy) < 0)
981 ret = -1;
982 if (set80211param(priv, IEEE80211_IOC_WPA, wpa) < 0)
983 ret = -1;
984
985 return ret;
986 }
987
988 static int
989 wpa_driver_bsd_set_wpa(void *priv, int enabled)
990 {
991 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
992
993 return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
994 }
995
996 static int
997 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
998 {
999 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1000 return set80211param(priv, IEEE80211_IOC_COUNTERMEASURES, enabled);
1001 }
1002
1003
1004 static int
1005 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
1006 {
1007 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
1008 return set80211param(priv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
1009 }
1010
1011 static int
1012 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
1013 {
1014 return bsd_send_mlme_param(priv, IEEE80211_MLME_DEAUTH, reason_code,
1015 addr);
1016 }
1017
1018 static int
1019 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
1020 {
1021 int authmode;
1022
1023 if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
1024 (auth_alg & WPA_AUTH_ALG_SHARED))
1025 authmode = IEEE80211_AUTH_AUTO;
1026 else if (auth_alg & WPA_AUTH_ALG_SHARED)
1027 authmode = IEEE80211_AUTH_SHARED;
1028 else
1029 authmode = IEEE80211_AUTH_OPEN;
1030
1031 return set80211param(priv, IEEE80211_IOC_AUTHMODE, authmode);
1032 }
1033
1034 static void
1035 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1036 {
1037 struct bsd_driver_data *drv = ctx;
1038
1039 drv_event_eapol_rx(drv->ctx, src_addr, buf, len);
1040 }
1041
1042 static int
1043 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
1044 {
1045 struct bsd_driver_data *drv = priv;
1046 struct ieee80211req_mlme mlme;
1047 u32 mode;
1048 int privacy;
1049 int ret = 0;
1050
1051 wpa_printf(MSG_DEBUG,
1052 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
1053 , __func__
1054 , (unsigned int) params->ssid_len, params->ssid
1055 , (unsigned int) params->wpa_ie_len
1056 , params->pairwise_suite
1057 , params->group_suite
1058 , params->key_mgmt_suite
1059 );
1060
1061 switch (params->mode) {
1062 case IEEE80211_MODE_INFRA:
1063 mode = 0 /* STA */;
1064 break;
1065 case IEEE80211_MODE_IBSS:
1066 mode = IFM_IEEE80211_IBSS;
1067 break;
1068 case IEEE80211_MODE_AP:
1069 mode = IFM_IEEE80211_HOSTAP;
1070 break;
1071 default:
1072 wpa_printf(MSG_ERROR, "%s: unknown operation mode", __func__);
1073 return -1;
1074 }
1075 if (bsd_set_mediaopt(drv, IFM_OMASK, mode) < 0) {
1076 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1077 __func__);
1078 return -1;
1079 }
1080
1081 if (params->mode == IEEE80211_MODE_AP) {
1082 drv->sock_xmit = l2_packet_init(drv->ifname, NULL, ETH_P_EAPOL,
1083 handle_read, drv, 0);
1084 if (drv->sock_xmit == NULL)
1085 return -1;
1086 drv->is_ap = 1;
1087 return 0;
1088 }
1089
1090 if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
1091 < 0)
1092 ret = -1;
1093 if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
1094 ret = -1;
1095 /* XXX error handling is wrong but unclear what to do... */
1096 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
1097 return -1;
1098
1099 privacy = !(params->pairwise_suite == CIPHER_NONE &&
1100 params->group_suite == CIPHER_NONE &&
1101 params->key_mgmt_suite == KEY_MGMT_NONE &&
1102 params->wpa_ie_len == 0);
1103 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
1104
1105 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
1106 return -1;
1107
1108 if (params->wpa_ie_len &&
1109 set80211param(drv, IEEE80211_IOC_WPA,
1110 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
1111 return -1;
1112
1113 os_memset(&mlme, 0, sizeof(mlme));
1114 mlme.im_op = IEEE80211_MLME_ASSOC;
1115 if (params->ssid != NULL)
1116 os_memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
1117 mlme.im_ssid_len = params->ssid_len;
1118 if (params->bssid != NULL)
1119 os_memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
1120 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
1121 return -1;
1122 return ret;
1123 }
1124
1125 static int
1126 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
1127 {
1128 struct bsd_driver_data *drv = priv;
1129 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1130 struct ieee80211_scan_req sr;
1131 int i;
1132 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1133
1134 if (bsd_set_mediaopt(drv, IFM_OMASK, 0 /* STA */) < 0) {
1135 wpa_printf(MSG_ERROR, "%s: failed to set operation mode",
1136 __func__);
1137 return -1;
1138 }
1139
1140 if (set80211param(drv, IEEE80211_IOC_ROAMING,
1141 IEEE80211_ROAMING_MANUAL) < 0) {
1142 wpa_printf(MSG_ERROR, "%s: failed to set "
1143 "wpa_supplicant-based roaming: %s", __func__,
1144 strerror(errno));
1145 return -1;
1146 }
1147
1148 if (wpa_driver_bsd_set_wpa(drv, 1) < 0) {
1149 wpa_printf(MSG_ERROR, "%s: failed to set wpa: %s", __func__,
1150 strerror(errno));
1151 return -1;
1152 }
1153
1154 /* NB: interface must be marked UP to do a scan */
1155 if (bsd_ctrl_iface(drv, 1) < 0)
1156 return -1;
1157
1158 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1159 os_memset(&sr, 0, sizeof(sr));
1160 sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE | IEEE80211_IOC_SCAN_ONCE |
1161 IEEE80211_IOC_SCAN_NOJOIN;
1162 sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
1163 if (params->num_ssids > 0) {
1164 sr.sr_nssid = params->num_ssids;
1165 #if 0
1166 /* Boundary check is done by upper layer */
1167 if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
1168 sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
1169 #endif
1170
1171 /* NB: check scan cache first */
1172 sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
1173 }
1174 for (i = 0; i < sr.sr_nssid; i++) {
1175 sr.sr_ssid[i].len = params->ssids[i].ssid_len;
1176 os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
1177 sr.sr_ssid[i].len);
1178 }
1179
1180 /* NB: net80211 delivers a scan complete event so no need to poll */
1181 return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
1182 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1183 /* set desired ssid before scan */
1184 if (bsd_set_ssid(drv, params->ssids[0].ssid,
1185 params->ssids[0].ssid_len) < 0)
1186 return -1;
1187
1188 /* NB: net80211 delivers a scan complete event so no need to poll */
1189 return set80211param(drv, IEEE80211_IOC_SCAN_REQ, 0);
1190 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1191 }
1192
1193 static void
1194 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
1195 {
1196 struct bsd_driver_data *drv = sock_ctx;
1197 char *buf;
1198 struct if_announcemsghdr *ifan;
1199 struct if_msghdr *ifm;
1200 struct rt_msghdr *rtm;
1201 union wpa_event_data event;
1202 struct ieee80211_michael_event *mic;
1203 struct ieee80211_leave_event *leave;
1204 struct ieee80211_join_event *join;
1205 int n, len;
1206
1207 len = rtbuf_len();
1208
1209 buf = os_malloc(len);
1210 if (buf == NULL) {
1211 wpa_printf(MSG_ERROR, "%s os_malloc() failed\n", __func__);
1212 return;
1213 }
1214
1215 n = read(sock, buf, len);
1216 if (n < 0) {
1217 if (errno != EINTR && errno != EAGAIN)
1218 wpa_printf(MSG_ERROR, "%s read() failed: %s\n",
1219 __func__, strerror(errno));
1220 os_free(buf);
1221 return;
1222 }
1223
1224 rtm = (struct rt_msghdr *) buf;
1225 if (rtm->rtm_version != RTM_VERSION) {
1226 wpa_printf(MSG_DEBUG, "Invalid routing message version=%d",
1227 rtm->rtm_version);
1228 os_free(buf);
1229 return;
1230 }
1231 os_memset(&event, 0, sizeof(event));
1232 switch (rtm->rtm_type) {
1233 case RTM_IFANNOUNCE:
1234 ifan = (struct if_announcemsghdr *) rtm;
1235 if (ifan->ifan_index != drv->ifindex)
1236 break;
1237 os_strlcpy(event.interface_status.ifname, drv->ifname,
1238 sizeof(event.interface_status.ifname));
1239 switch (ifan->ifan_what) {
1240 case IFAN_DEPARTURE:
1241 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1242 default:
1243 os_free(buf);
1244 return;
1245 }
1246 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
1247 event.interface_status.ifname,
1248 ifan->ifan_what == IFAN_DEPARTURE ?
1249 "removed" : "added");
1250 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1251 break;
1252 case RTM_IEEE80211:
1253 ifan = (struct if_announcemsghdr *) rtm;
1254 if (ifan->ifan_index != drv->ifindex)
1255 break;
1256 switch (ifan->ifan_what) {
1257 case RTM_IEEE80211_ASSOC:
1258 case RTM_IEEE80211_REASSOC:
1259 if (drv->is_ap)
1260 break;
1261 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
1262 break;
1263 case RTM_IEEE80211_DISASSOC:
1264 if (drv->is_ap)
1265 break;
1266 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
1267 break;
1268 case RTM_IEEE80211_SCAN:
1269 if (drv->is_ap)
1270 break;
1271 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
1272 break;
1273 case RTM_IEEE80211_LEAVE:
1274 leave = (struct ieee80211_leave_event *) &ifan[1];
1275 drv_event_disassoc(ctx, leave->iev_addr);
1276 break;
1277 case RTM_IEEE80211_JOIN:
1278 #ifdef RTM_IEEE80211_REJOIN
1279 case RTM_IEEE80211_REJOIN:
1280 #endif
1281 join = (struct ieee80211_join_event *) &ifan[1];
1282 bsd_new_sta(drv, ctx, join->iev_addr);
1283 break;
1284 case RTM_IEEE80211_REPLAY:
1285 /* ignore */
1286 break;
1287 case RTM_IEEE80211_MICHAEL:
1288 mic = (struct ieee80211_michael_event *) &ifan[1];
1289 wpa_printf(MSG_DEBUG,
1290 "Michael MIC failure wireless event: "
1291 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
1292 MAC2STR(mic->iev_src));
1293
1294 os_memset(&event, 0, sizeof(event));
1295 event.michael_mic_failure.unicast =
1296 !IEEE80211_IS_MULTICAST(mic->iev_dst);
1297 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
1298 &event);
1299 break;
1300 }
1301 break;
1302 case RTM_IFINFO:
1303 ifm = (struct if_msghdr *) rtm;
1304 if (ifm->ifm_index != drv->ifindex)
1305 break;
1306 if ((rtm->rtm_flags & RTF_UP) == 0) {
1307 os_strlcpy(event.interface_status.ifname, drv->ifname,
1308 sizeof(event.interface_status.ifname));
1309 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
1310 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
1311 event.interface_status.ifname);
1312 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
1313 }
1314 break;
1315 }
1316 os_free(buf);
1317 }
1318
1319 static void
1320 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
1321 struct ieee80211req_scan_result *sr)
1322 {
1323 struct wpa_scan_res *result, **tmp;
1324 size_t extra_len;
1325 u8 *pos;
1326
1327 extra_len = 2 + sr->isr_ssid_len;
1328 extra_len += 2 + sr->isr_nrates;
1329 extra_len += 3; /* ERP IE */
1330 extra_len += sr->isr_ie_len;
1331
1332 result = os_zalloc(sizeof(*result) + extra_len);
1333 if (result == NULL)
1334 return;
1335 os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
1336 result->freq = sr->isr_freq;
1337 result->beacon_int = sr->isr_intval;
1338 result->caps = sr->isr_capinfo;
1339 result->qual = sr->isr_rssi;
1340 result->noise = sr->isr_noise;
1341 /*
1342 * the rssi value reported by the kernel is in 0.5dB steps relative to
1343 * the reported noise floor. see ieee80211_node.h for details.
1344 */
1345 result->level = sr->isr_rssi / 2 + sr->isr_noise;
1346
1347 pos = (u8 *)(result + 1);
1348
1349 *pos++ = WLAN_EID_SSID;
1350 *pos++ = sr->isr_ssid_len;
1351 os_memcpy(pos, sr + 1, sr->isr_ssid_len);
1352 pos += sr->isr_ssid_len;
1353
1354 /*
1355 * Deal all rates as supported rate.
1356 * Because net80211 doesn't report extended supported rate or not.
1357 */
1358 *pos++ = WLAN_EID_SUPP_RATES;
1359 *pos++ = sr->isr_nrates;
1360 os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
1361 pos += sr->isr_nrates;
1362
1363 *pos++ = WLAN_EID_ERP_INFO;
1364 *pos++ = 1;
1365 *pos++ = sr->isr_erp;
1366
1367 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
1368 pos += sr->isr_ie_len;
1369
1370 result->ie_len = pos - (u8 *)(result + 1);
1371
1372 tmp = os_realloc_array(res->res, res->num + 1,
1373 sizeof(struct wpa_scan_res *));
1374 if (tmp == NULL) {
1375 os_free(result);
1376 return;
1377 }
1378 tmp[res->num++] = result;
1379 res->res = tmp;
1380 }
1381
1382 struct wpa_scan_results *
1383 wpa_driver_bsd_get_scan_results2(void *priv)
1384 {
1385 struct ieee80211req_scan_result *sr;
1386 struct wpa_scan_results *res;
1387 int len, rest;
1388 uint8_t buf[24*1024], *pos;
1389
1390 len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
1391 if (len < 0)
1392 return NULL;
1393
1394 res = os_zalloc(sizeof(*res));
1395 if (res == NULL)
1396 return NULL;
1397
1398 pos = buf;
1399 rest = len;
1400 while (rest >= sizeof(struct ieee80211req_scan_result)) {
1401 sr = (struct ieee80211req_scan_result *)pos;
1402 wpa_driver_bsd_add_scan_entry(res, sr);
1403 pos += sr->isr_len;
1404 rest -= sr->isr_len;
1405 }
1406
1407 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
1408 len, (unsigned long)res->num);
1409
1410 return res;
1411 }
1412
1413 static int wpa_driver_bsd_capa(struct bsd_driver_data *drv)
1414 {
1415 #ifdef IEEE80211_IOC_DEVCAPS
1416 /* kernel definitions copied from net80211/ieee80211_var.h */
1417 #define IEEE80211_CIPHER_WEP 0
1418 #define IEEE80211_CIPHER_TKIP 1
1419 #define IEEE80211_CIPHER_AES_CCM 3
1420 #define IEEE80211_CRYPTO_WEP (1<<IEEE80211_CIPHER_WEP)
1421 #define IEEE80211_CRYPTO_TKIP (1<<IEEE80211_CIPHER_TKIP)
1422 #define IEEE80211_CRYPTO_AES_CCM (1<<IEEE80211_CIPHER_AES_CCM)
1423 #define IEEE80211_C_HOSTAP 0x00000400 /* CAPABILITY: HOSTAP avail */
1424 #define IEEE80211_C_WPA1 0x00800000 /* CAPABILITY: WPA1 avail */
1425 #define IEEE80211_C_WPA2 0x01000000 /* CAPABILITY: WPA2 avail */
1426 struct ieee80211_devcaps_req devcaps;
1427
1428 if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps,
1429 sizeof(devcaps)) < 0) {
1430 wpa_printf(MSG_ERROR, "failed to IEEE80211_IOC_DEVCAPS: %s",
1431 strerror(errno));
1432 return -1;
1433 }
1434
1435 wpa_printf(MSG_DEBUG, "%s: drivercaps=0x%08x,cryptocaps=0x%08x",
1436 __func__, devcaps.dc_drivercaps, devcaps.dc_cryptocaps);
1437
1438 if (devcaps.dc_drivercaps & IEEE80211_C_WPA1)
1439 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1440 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK;
1441 if (devcaps.dc_drivercaps & IEEE80211_C_WPA2)
1442 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1443 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1444
1445 if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_WEP)
1446 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_WEP40 |
1447 WPA_DRIVER_CAPA_ENC_WEP104;
1448 if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_TKIP)
1449 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_TKIP;
1450 if (devcaps.dc_cryptocaps & IEEE80211_CRYPTO_AES_CCM)
1451 drv->capa.enc |= WPA_DRIVER_CAPA_ENC_CCMP;
1452
1453 if (devcaps.dc_drivercaps & IEEE80211_C_HOSTAP)
1454 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1455 #undef IEEE80211_CIPHER_WEP
1456 #undef IEEE80211_CIPHER_TKIP
1457 #undef IEEE80211_CIPHER_AES_CCM
1458 #undef IEEE80211_CRYPTO_WEP
1459 #undef IEEE80211_CRYPTO_TKIP
1460 #undef IEEE80211_CRYPTO_AES_CCM
1461 #undef IEEE80211_C_HOSTAP
1462 #undef IEEE80211_C_WPA1
1463 #undef IEEE80211_C_WPA2
1464 #else /* IEEE80211_IOC_DEVCAPS */
1465 /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1466 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1467 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1468 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1469 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1470 drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1471 WPA_DRIVER_CAPA_ENC_WEP104 |
1472 WPA_DRIVER_CAPA_ENC_TKIP |
1473 WPA_DRIVER_CAPA_ENC_CCMP;
1474 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1475 #endif /* IEEE80211_IOC_DEVCAPS */
1476 #ifdef IEEE80211_IOC_SCAN_MAX_SSID
1477 drv->capa.max_scan_ssids = IEEE80211_IOC_SCAN_MAX_SSID;
1478 #else /* IEEE80211_IOC_SCAN_MAX_SSID */
1479 drv->capa.max_scan_ssids = 1;
1480 #endif /* IEEE80211_IOC_SCAN_MAX_SSID */
1481 drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1482 WPA_DRIVER_AUTH_SHARED |
1483 WPA_DRIVER_AUTH_LEAP;
1484 return 0;
1485 }
1486
1487 static void *
1488 wpa_driver_bsd_init(void *ctx, const char *ifname)
1489 {
1490 #define GETPARAM(drv, param, v) \
1491 (((v) = get80211param(drv, param)) != -1)
1492 struct bsd_driver_data *drv;
1493
1494 drv = os_zalloc(sizeof(*drv));
1495 if (drv == NULL)
1496 return NULL;
1497 /*
1498 * NB: We require the interface name be mappable to an index.
1499 * This implies we do not support having wpa_supplicant
1500 * wait for an interface to appear. This seems ok; that
1501 * doesn't belong here; it's really the job of devd.
1502 */
1503 drv->ifindex = if_nametoindex(ifname);
1504 if (drv->ifindex == 0) {
1505 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
1506 __func__, ifname);
1507 goto fail1;
1508 }
1509 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1510 if (drv->sock < 0)
1511 goto fail1;
1512
1513 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1514 /* Down interface during setup. */
1515 if (bsd_ctrl_iface(drv, 0) < 0)
1516 goto fail;
1517
1518 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
1519 if (drv->route < 0)
1520 goto fail;
1521 eloop_register_read_sock(drv->route,
1522 wpa_driver_bsd_event_receive, ctx, drv);
1523
1524 drv->ctx = ctx;
1525
1526 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
1527 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
1528 __func__, strerror(errno));
1529 goto fail;
1530 }
1531 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
1532 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
1533 __func__, strerror(errno));
1534 goto fail;
1535 }
1536 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
1537 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
1538 __func__, strerror(errno));
1539 goto fail;
1540 }
1541
1542 if (wpa_driver_bsd_capa(drv))
1543 goto fail;
1544
1545 drv->opmode = get80211opmode(drv);
1546
1547 return drv;
1548 fail:
1549 close(drv->sock);
1550 fail1:
1551 os_free(drv);
1552 return NULL;
1553 #undef GETPARAM
1554 }
1555
1556 static void
1557 wpa_driver_bsd_deinit(void *priv)
1558 {
1559 struct bsd_driver_data *drv = priv;
1560
1561 wpa_driver_bsd_set_wpa(drv, 0);
1562 eloop_unregister_read_sock(drv->route);
1563
1564 /* NB: mark interface down */
1565 bsd_ctrl_iface(drv, 0);
1566
1567 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
1568 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0)
1569 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming state",
1570 __func__);
1571
1572 if (drv->sock_xmit != NULL)
1573 l2_packet_deinit(drv->sock_xmit);
1574 (void) close(drv->route); /* ioctl socket */
1575 (void) close(drv->sock); /* event socket */
1576 os_free(drv);
1577 }
1578
1579 static int
1580 wpa_driver_bsd_get_capa(void *priv, struct wpa_driver_capa *capa)
1581 {
1582 struct bsd_driver_data *drv = priv;
1583
1584 os_memcpy(capa, &drv->capa, sizeof(*capa));
1585 return 0;
1586 }
1587 #endif /* HOSTAPD */
1588
1589
1590 const struct wpa_driver_ops wpa_driver_bsd_ops = {
1591 .name = "bsd",
1592 .desc = "BSD 802.11 support",
1593 #ifdef HOSTAPD
1594 .hapd_init = bsd_init,
1595 .hapd_deinit = bsd_deinit,
1596 .set_privacy = bsd_set_privacy,
1597 .get_seqnum = bsd_get_seqnum,
1598 .flush = bsd_flush,
1599 .read_sta_data = bsd_read_sta_driver_data,
1600 .sta_disassoc = bsd_sta_disassoc,
1601 .sta_deauth = bsd_sta_deauth,
1602 .sta_set_flags = bsd_set_sta_authorized,
1603 #else /* HOSTAPD */
1604 .init = wpa_driver_bsd_init,
1605 .deinit = wpa_driver_bsd_deinit,
1606 .get_bssid = wpa_driver_bsd_get_bssid,
1607 .get_ssid = wpa_driver_bsd_get_ssid,
1608 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
1609 .scan2 = wpa_driver_bsd_scan,
1610 .get_scan_results2 = wpa_driver_bsd_get_scan_results2,
1611 .deauthenticate = wpa_driver_bsd_deauthenticate,
1612 .associate = wpa_driver_bsd_associate,
1613 .get_capa = wpa_driver_bsd_get_capa,
1614 #endif /* HOSTAPD */
1615 .set_freq = bsd_set_freq,
1616 .set_key = bsd_set_key,
1617 .set_ieee8021x = bsd_set_ieee8021x,
1618 .hapd_set_ssid = bsd_set_ssid,
1619 .hapd_get_ssid = bsd_get_ssid,
1620 .hapd_send_eapol = bsd_send_eapol,
1621 .set_generic_elem = bsd_set_opt_ie,
1622 };
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