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Added preliminary Wi-Fi Protected Setup (WPS) implementation
[thirdparty/hostap.git] / hostapd / driver_madwifi.c
1 /*
2 * hostapd / Driver interaction with MADWIFI 802.11 driver
3 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
4 * Copyright (c) 2004, Video54 Technologies
5 * Copyright (c) 2005-2007, Jouni Malinen <j@w1.fi>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * Alternatively, this software may be distributed under the terms of BSD
12 * license.
13 *
14 * See README and COPYING for more details.
15 */
16
17 #include "includes.h"
18 #include <net/if.h>
19 #include <sys/ioctl.h>
20
21 #include <include/compat.h>
22 #include <net80211/ieee80211.h>
23 #ifdef WME_NUM_AC
24 /* Assume this is built against BSD branch of madwifi driver. */
25 #define MADWIFI_BSD
26 #include <net80211/_ieee80211.h>
27 #endif /* WME_NUM_AC */
28 #include <net80211/ieee80211_crypto.h>
29 #include <net80211/ieee80211_ioctl.h>
30
31 #ifdef CONFIG_WPS
32 #ifdef IEEE80211_IOCTL_FILTERFRAME
33 #include <netpacket/packet.h>
34
35 #ifndef ETH_P_80211_RAW
36 #define ETH_P_80211_RAW 0x0019
37 #endif
38 #endif /* IEEE80211_IOCTL_FILTERFRAME */
39 #endif /* CONFIG_WPS */
40
41 /*
42 * Avoid conflicts with hostapd definitions by undefining couple of defines
43 * from madwifi header files.
44 */
45 #undef RSN_VERSION
46 #undef WPA_VERSION
47 #undef WPA_OUI_TYPE
48 #undef WME_OUI_TYPE
49
50
51 #ifdef IEEE80211_IOCTL_SETWMMPARAMS
52 /* Assume this is built against madwifi-ng */
53 #define MADWIFI_NG
54 #endif /* IEEE80211_IOCTL_SETWMMPARAMS */
55
56 #include "wireless_copy.h"
57
58 #include "hostapd.h"
59 #include "driver.h"
60 #include "ieee802_1x.h"
61 #include "eloop.h"
62 #include "priv_netlink.h"
63 #include "sta_info.h"
64 #include "l2_packet/l2_packet.h"
65
66 #include "wpa.h"
67 #include "radius/radius.h"
68 #include "ieee802_11.h"
69 #include "accounting.h"
70 #include "common.h"
71 #include "wps_hostapd.h"
72
73
74 struct madwifi_driver_data {
75 struct hostapd_data *hapd; /* back pointer */
76
77 char iface[IFNAMSIZ + 1];
78 int ifindex;
79 struct l2_packet_data *sock_xmit; /* raw packet xmit socket */
80 struct l2_packet_data *sock_recv; /* raw packet recv socket */
81 int ioctl_sock; /* socket for ioctl() use */
82 int wext_sock; /* socket for wireless events */
83 int we_version;
84 u8 acct_mac[ETH_ALEN];
85 struct hostap_sta_driver_data acct_data;
86
87 struct l2_packet_data *sock_raw; /* raw 802.11 management frames */
88 };
89
90 static int madwifi_sta_deauth(void *priv, const u8 *addr, int reason_code);
91
92 static int
93 set80211priv(struct madwifi_driver_data *drv, int op, void *data, int len)
94 {
95 struct iwreq iwr;
96 int do_inline = len < IFNAMSIZ;
97
98 memset(&iwr, 0, sizeof(iwr));
99 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
100 #ifdef IEEE80211_IOCTL_FILTERFRAME
101 /* FILTERFRAME must be NOT inline, regardless of size. */
102 if (op == IEEE80211_IOCTL_FILTERFRAME)
103 do_inline = 0;
104 #endif /* IEEE80211_IOCTL_FILTERFRAME */
105 if (do_inline) {
106 /*
107 * Argument data fits inline; put it there.
108 */
109 memcpy(iwr.u.name, data, len);
110 } else {
111 /*
112 * Argument data too big for inline transfer; setup a
113 * parameter block instead; the kernel will transfer
114 * the data for the driver.
115 */
116 iwr.u.data.pointer = data;
117 iwr.u.data.length = len;
118 }
119
120 if (ioctl(drv->ioctl_sock, op, &iwr) < 0) {
121 #ifdef MADWIFI_NG
122 int first = IEEE80211_IOCTL_SETPARAM;
123 static const char *opnames[] = {
124 "ioctl[IEEE80211_IOCTL_SETPARAM]",
125 "ioctl[IEEE80211_IOCTL_GETPARAM]",
126 "ioctl[IEEE80211_IOCTL_SETMODE]",
127 "ioctl[IEEE80211_IOCTL_GETMODE]",
128 "ioctl[IEEE80211_IOCTL_SETWMMPARAMS]",
129 "ioctl[IEEE80211_IOCTL_GETWMMPARAMS]",
130 "ioctl[IEEE80211_IOCTL_SETCHANLIST]",
131 "ioctl[IEEE80211_IOCTL_GETCHANLIST]",
132 "ioctl[IEEE80211_IOCTL_CHANSWITCH]",
133 "ioctl[IEEE80211_IOCTL_GET_APPIEBUF]",
134 "ioctl[IEEE80211_IOCTL_SET_APPIEBUF]",
135 "ioctl[IEEE80211_IOCTL_GETSCANRESULTS]",
136 "ioctl[IEEE80211_IOCTL_FILTERFRAME]",
137 "ioctl[IEEE80211_IOCTL_GETCHANINFO]",
138 "ioctl[IEEE80211_IOCTL_SETOPTIE]",
139 "ioctl[IEEE80211_IOCTL_GETOPTIE]",
140 "ioctl[IEEE80211_IOCTL_SETMLME]",
141 NULL,
142 "ioctl[IEEE80211_IOCTL_SETKEY]",
143 NULL,
144 "ioctl[IEEE80211_IOCTL_DELKEY]",
145 NULL,
146 "ioctl[IEEE80211_IOCTL_ADDMAC]",
147 NULL,
148 "ioctl[IEEE80211_IOCTL_DELMAC]",
149 NULL,
150 "ioctl[IEEE80211_IOCTL_WDSMAC]",
151 NULL,
152 "ioctl[IEEE80211_IOCTL_WDSDELMAC]",
153 NULL,
154 "ioctl[IEEE80211_IOCTL_KICKMAC]",
155 };
156 #else /* MADWIFI_NG */
157 int first = IEEE80211_IOCTL_SETPARAM;
158 static const char *opnames[] = {
159 "ioctl[IEEE80211_IOCTL_SETPARAM]",
160 "ioctl[IEEE80211_IOCTL_GETPARAM]",
161 "ioctl[IEEE80211_IOCTL_SETKEY]",
162 "ioctl[SIOCIWFIRSTPRIV+3]",
163 "ioctl[IEEE80211_IOCTL_DELKEY]",
164 "ioctl[SIOCIWFIRSTPRIV+5]",
165 "ioctl[IEEE80211_IOCTL_SETMLME]",
166 "ioctl[SIOCIWFIRSTPRIV+7]",
167 "ioctl[IEEE80211_IOCTL_SETOPTIE]",
168 "ioctl[IEEE80211_IOCTL_GETOPTIE]",
169 "ioctl[IEEE80211_IOCTL_ADDMAC]",
170 "ioctl[SIOCIWFIRSTPRIV+11]",
171 "ioctl[IEEE80211_IOCTL_DELMAC]",
172 "ioctl[SIOCIWFIRSTPRIV+13]",
173 "ioctl[IEEE80211_IOCTL_CHANLIST]",
174 "ioctl[SIOCIWFIRSTPRIV+15]",
175 "ioctl[IEEE80211_IOCTL_GETRSN]",
176 "ioctl[SIOCIWFIRSTPRIV+17]",
177 "ioctl[IEEE80211_IOCTL_GETKEY]",
178 };
179 #endif /* MADWIFI_NG */
180 int idx = op - first;
181 if (first <= op &&
182 idx < (int) (sizeof(opnames) / sizeof(opnames[0])) &&
183 opnames[idx])
184 perror(opnames[idx]);
185 else
186 perror("ioctl[unknown???]");
187 return -1;
188 }
189 return 0;
190 }
191
192 static int
193 set80211param(struct madwifi_driver_data *drv, int op, int arg)
194 {
195 struct iwreq iwr;
196
197 memset(&iwr, 0, sizeof(iwr));
198 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
199 iwr.u.mode = op;
200 memcpy(iwr.u.name+sizeof(__u32), &arg, sizeof(arg));
201
202 if (ioctl(drv->ioctl_sock, IEEE80211_IOCTL_SETPARAM, &iwr) < 0) {
203 perror("ioctl[IEEE80211_IOCTL_SETPARAM]");
204 wpa_printf(MSG_DEBUG, "%s: Failed to set parameter (op %d "
205 "arg %d)", __func__, op, arg);
206 return -1;
207 }
208 return 0;
209 }
210
211 static const char *
212 ether_sprintf(const u8 *addr)
213 {
214 static char buf[sizeof(MACSTR)];
215
216 if (addr != NULL)
217 snprintf(buf, sizeof(buf), MACSTR, MAC2STR(addr));
218 else
219 snprintf(buf, sizeof(buf), MACSTR, 0,0,0,0,0,0);
220 return buf;
221 }
222
223 /*
224 * Configure WPA parameters.
225 */
226 static int
227 madwifi_configure_wpa(struct madwifi_driver_data *drv)
228 {
229 struct hostapd_data *hapd = drv->hapd;
230 struct hostapd_bss_config *conf = hapd->conf;
231 int v;
232
233 switch (conf->wpa_group) {
234 case WPA_CIPHER_CCMP:
235 v = IEEE80211_CIPHER_AES_CCM;
236 break;
237 case WPA_CIPHER_TKIP:
238 v = IEEE80211_CIPHER_TKIP;
239 break;
240 case WPA_CIPHER_WEP104:
241 v = IEEE80211_CIPHER_WEP;
242 break;
243 case WPA_CIPHER_WEP40:
244 v = IEEE80211_CIPHER_WEP;
245 break;
246 case WPA_CIPHER_NONE:
247 v = IEEE80211_CIPHER_NONE;
248 break;
249 default:
250 wpa_printf(MSG_ERROR, "Unknown group key cipher %u",
251 conf->wpa_group);
252 return -1;
253 }
254 wpa_printf(MSG_DEBUG, "%s: group key cipher=%d", __func__, v);
255 if (set80211param(drv, IEEE80211_PARAM_MCASTCIPHER, v)) {
256 printf("Unable to set group key cipher to %u\n", v);
257 return -1;
258 }
259 if (v == IEEE80211_CIPHER_WEP) {
260 /* key length is done only for specific ciphers */
261 v = (conf->wpa_group == WPA_CIPHER_WEP104 ? 13 : 5);
262 if (set80211param(drv, IEEE80211_PARAM_MCASTKEYLEN, v)) {
263 printf("Unable to set group key length to %u\n", v);
264 return -1;
265 }
266 }
267
268 v = 0;
269 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
270 v |= 1<<IEEE80211_CIPHER_AES_CCM;
271 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
272 v |= 1<<IEEE80211_CIPHER_TKIP;
273 if (conf->wpa_pairwise & WPA_CIPHER_NONE)
274 v |= 1<<IEEE80211_CIPHER_NONE;
275 wpa_printf(MSG_DEBUG, "%s: pairwise key ciphers=0x%x", __func__, v);
276 if (set80211param(drv, IEEE80211_PARAM_UCASTCIPHERS, v)) {
277 printf("Unable to set pairwise key ciphers to 0x%x\n", v);
278 return -1;
279 }
280
281 wpa_printf(MSG_DEBUG, "%s: key management algorithms=0x%x",
282 __func__, conf->wpa_key_mgmt);
283 if (set80211param(drv, IEEE80211_PARAM_KEYMGTALGS, conf->wpa_key_mgmt)) {
284 printf("Unable to set key management algorithms to 0x%x\n",
285 conf->wpa_key_mgmt);
286 return -1;
287 }
288
289 v = 0;
290 if (conf->rsn_preauth)
291 v |= BIT(0);
292 wpa_printf(MSG_DEBUG, "%s: rsn capabilities=0x%x",
293 __func__, conf->rsn_preauth);
294 if (set80211param(drv, IEEE80211_PARAM_RSNCAPS, v)) {
295 printf("Unable to set RSN capabilities to 0x%x\n", v);
296 return -1;
297 }
298
299 wpa_printf(MSG_DEBUG, "%s: enable WPA=0x%x", __func__, conf->wpa);
300 if (set80211param(drv, IEEE80211_PARAM_WPA, conf->wpa)) {
301 printf("Unable to set WPA to %u\n", conf->wpa);
302 return -1;
303 }
304 return 0;
305 }
306
307
308 static int
309 madwifi_set_iface_flags(void *priv, int dev_up)
310 {
311 struct madwifi_driver_data *drv = priv;
312 struct ifreq ifr;
313
314 wpa_printf(MSG_DEBUG, "%s: dev_up=%d", __func__, dev_up);
315
316 if (drv->ioctl_sock < 0)
317 return -1;
318
319 memset(&ifr, 0, sizeof(ifr));
320 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
321
322 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
323 perror("ioctl[SIOCGIFFLAGS]");
324 return -1;
325 }
326
327 if (dev_up)
328 ifr.ifr_flags |= IFF_UP;
329 else
330 ifr.ifr_flags &= ~IFF_UP;
331
332 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
333 perror("ioctl[SIOCSIFFLAGS]");
334 return -1;
335 }
336
337 if (dev_up) {
338 memset(&ifr, 0, sizeof(ifr));
339 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
340 ifr.ifr_mtu = HOSTAPD_MTU;
341 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
342 perror("ioctl[SIOCSIFMTU]");
343 printf("Setting MTU failed - trying to survive with "
344 "current value\n");
345 }
346 }
347
348 return 0;
349 }
350
351 static int
352 madwifi_set_ieee8021x(const char *ifname, void *priv, int enabled)
353 {
354 struct madwifi_driver_data *drv = priv;
355 struct hostapd_data *hapd = drv->hapd;
356 struct hostapd_bss_config *conf = hapd->conf;
357
358 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
359
360 if (!enabled) {
361 /* XXX restore state */
362 return set80211param(priv, IEEE80211_PARAM_AUTHMODE,
363 IEEE80211_AUTH_AUTO);
364 }
365 if (!conf->wpa && !conf->ieee802_1x) {
366 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
367 HOSTAPD_LEVEL_WARNING, "No 802.1X or WPA enabled!");
368 return -1;
369 }
370 if (conf->wpa && madwifi_configure_wpa(drv) != 0) {
371 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
372 HOSTAPD_LEVEL_WARNING, "Error configuring WPA state!");
373 return -1;
374 }
375 if (set80211param(priv, IEEE80211_PARAM_AUTHMODE,
376 (conf->wpa ? IEEE80211_AUTH_WPA : IEEE80211_AUTH_8021X))) {
377 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_DRIVER,
378 HOSTAPD_LEVEL_WARNING, "Error enabling WPA/802.1X!");
379 return -1;
380 }
381
382 return 0;
383 }
384
385 static int
386 madwifi_set_privacy(const char *ifname, void *priv, int enabled)
387 {
388 struct madwifi_driver_data *drv = priv;
389
390 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
391
392 return set80211param(drv, IEEE80211_PARAM_PRIVACY, enabled);
393 }
394
395 static int
396 madwifi_set_sta_authorized(void *priv, const u8 *addr, int authorized)
397 {
398 struct madwifi_driver_data *drv = priv;
399 struct ieee80211req_mlme mlme;
400 int ret;
401
402 wpa_printf(MSG_DEBUG, "%s: addr=%s authorized=%d",
403 __func__, ether_sprintf(addr), authorized);
404
405 if (authorized)
406 mlme.im_op = IEEE80211_MLME_AUTHORIZE;
407 else
408 mlme.im_op = IEEE80211_MLME_UNAUTHORIZE;
409 mlme.im_reason = 0;
410 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
411 ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
412 if (ret < 0) {
413 wpa_printf(MSG_DEBUG, "%s: Failed to %sauthorize STA " MACSTR,
414 __func__, authorized ? "" : "un", MAC2STR(addr));
415 }
416
417 return ret;
418 }
419
420 static int
421 madwifi_sta_set_flags(void *priv, const u8 *addr, int total_flags,
422 int flags_or, int flags_and)
423 {
424 /* For now, only support setting Authorized flag */
425 if (flags_or & WLAN_STA_AUTHORIZED)
426 return madwifi_set_sta_authorized(priv, addr, 1);
427 if (!(flags_and & WLAN_STA_AUTHORIZED))
428 return madwifi_set_sta_authorized(priv, addr, 0);
429 return 0;
430 }
431
432 static int
433 madwifi_del_key(void *priv, const u8 *addr, int key_idx)
434 {
435 struct madwifi_driver_data *drv = priv;
436 struct ieee80211req_del_key wk;
437 int ret;
438
439 wpa_printf(MSG_DEBUG, "%s: addr=%s key_idx=%d",
440 __func__, ether_sprintf(addr), key_idx);
441
442 memset(&wk, 0, sizeof(wk));
443 if (addr != NULL) {
444 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
445 wk.idk_keyix = (u8) IEEE80211_KEYIX_NONE;
446 } else {
447 wk.idk_keyix = key_idx;
448 }
449
450 ret = set80211priv(drv, IEEE80211_IOCTL_DELKEY, &wk, sizeof(wk));
451 if (ret < 0) {
452 wpa_printf(MSG_DEBUG, "%s: Failed to delete key (addr %s"
453 " key_idx %d)", __func__, ether_sprintf(addr),
454 key_idx);
455 }
456
457 return ret;
458 }
459
460 static int
461 madwifi_set_key(const char *ifname, void *priv, const char *alg,
462 const u8 *addr, int key_idx,
463 const u8 *key, size_t key_len, int txkey)
464 {
465 struct madwifi_driver_data *drv = priv;
466 struct ieee80211req_key wk;
467 u_int8_t cipher;
468 int ret;
469
470 if (strcmp(alg, "none") == 0)
471 return madwifi_del_key(drv, addr, key_idx);
472
473 wpa_printf(MSG_DEBUG, "%s: alg=%s addr=%s key_idx=%d",
474 __func__, alg, ether_sprintf(addr), key_idx);
475
476 if (strcmp(alg, "WEP") == 0)
477 cipher = IEEE80211_CIPHER_WEP;
478 else if (strcmp(alg, "TKIP") == 0)
479 cipher = IEEE80211_CIPHER_TKIP;
480 else if (strcmp(alg, "CCMP") == 0)
481 cipher = IEEE80211_CIPHER_AES_CCM;
482 else {
483 printf("%s: unknown/unsupported algorithm %s\n",
484 __func__, alg);
485 return -1;
486 }
487
488 if (key_len > sizeof(wk.ik_keydata)) {
489 printf("%s: key length %lu too big\n", __func__,
490 (unsigned long) key_len);
491 return -3;
492 }
493
494 memset(&wk, 0, sizeof(wk));
495 wk.ik_type = cipher;
496 wk.ik_flags = IEEE80211_KEY_RECV | IEEE80211_KEY_XMIT;
497 if (addr == NULL) {
498 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
499 wk.ik_keyix = key_idx;
500 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
501 } else {
502 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
503 wk.ik_keyix = IEEE80211_KEYIX_NONE;
504 }
505 wk.ik_keylen = key_len;
506 memcpy(wk.ik_keydata, key, key_len);
507
508 ret = set80211priv(drv, IEEE80211_IOCTL_SETKEY, &wk, sizeof(wk));
509 if (ret < 0) {
510 wpa_printf(MSG_DEBUG, "%s: Failed to set key (addr %s"
511 " key_idx %d alg '%s' key_len %lu txkey %d)",
512 __func__, ether_sprintf(wk.ik_macaddr), key_idx,
513 alg, (unsigned long) key_len, txkey);
514 }
515
516 return ret;
517 }
518
519
520 static int
521 madwifi_get_seqnum(const char *ifname, void *priv, const u8 *addr, int idx,
522 u8 *seq)
523 {
524 struct madwifi_driver_data *drv = priv;
525 struct ieee80211req_key wk;
526
527 wpa_printf(MSG_DEBUG, "%s: addr=%s idx=%d",
528 __func__, ether_sprintf(addr), idx);
529
530 memset(&wk, 0, sizeof(wk));
531 if (addr == NULL)
532 memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
533 else
534 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
535 wk.ik_keyix = idx;
536
537 if (set80211priv(drv, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk))) {
538 wpa_printf(MSG_DEBUG, "%s: Failed to get encryption data "
539 "(addr " MACSTR " key_idx %d)",
540 __func__, MAC2STR(wk.ik_macaddr), idx);
541 return -1;
542 }
543
544 #ifdef WORDS_BIGENDIAN
545 {
546 /*
547 * wk.ik_keytsc is in host byte order (big endian), need to
548 * swap it to match with the byte order used in WPA.
549 */
550 int i;
551 u8 tmp[WPA_KEY_RSC_LEN];
552 memcpy(tmp, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
553 for (i = 0; i < WPA_KEY_RSC_LEN; i++) {
554 seq[i] = tmp[WPA_KEY_RSC_LEN - i - 1];
555 }
556 }
557 #else /* WORDS_BIGENDIAN */
558 memcpy(seq, &wk.ik_keytsc, sizeof(wk.ik_keytsc));
559 #endif /* WORDS_BIGENDIAN */
560 return 0;
561 }
562
563
564 static int
565 madwifi_flush(void *priv)
566 {
567 #ifdef MADWIFI_BSD
568 u8 allsta[IEEE80211_ADDR_LEN];
569 memset(allsta, 0xff, IEEE80211_ADDR_LEN);
570 return madwifi_sta_deauth(priv, allsta, IEEE80211_REASON_AUTH_LEAVE);
571 #else /* MADWIFI_BSD */
572 return 0; /* XXX */
573 #endif /* MADWIFI_BSD */
574 }
575
576
577 static int
578 madwifi_read_sta_driver_data(void *priv, struct hostap_sta_driver_data *data,
579 const u8 *addr)
580 {
581 struct madwifi_driver_data *drv = priv;
582
583 #ifdef MADWIFI_BSD
584 struct ieee80211req_sta_stats stats;
585
586 memset(data, 0, sizeof(*data));
587
588 /*
589 * Fetch statistics for station from the system.
590 */
591 memset(&stats, 0, sizeof(stats));
592 memcpy(stats.is_u.macaddr, addr, IEEE80211_ADDR_LEN);
593 if (set80211priv(drv,
594 #ifdef MADWIFI_NG
595 IEEE80211_IOCTL_STA_STATS,
596 #else /* MADWIFI_NG */
597 IEEE80211_IOCTL_GETSTASTATS,
598 #endif /* MADWIFI_NG */
599 &stats, sizeof(stats))) {
600 wpa_printf(MSG_DEBUG, "%s: Failed to fetch STA stats (addr "
601 MACSTR ")", __func__, MAC2STR(addr));
602 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
603 memcpy(data, &drv->acct_data, sizeof(*data));
604 return 0;
605 }
606
607 printf("Failed to get station stats information element.\n");
608 return -1;
609 }
610
611 data->rx_packets = stats.is_stats.ns_rx_data;
612 data->rx_bytes = stats.is_stats.ns_rx_bytes;
613 data->tx_packets = stats.is_stats.ns_tx_data;
614 data->tx_bytes = stats.is_stats.ns_tx_bytes;
615 return 0;
616
617 #else /* MADWIFI_BSD */
618
619 char buf[1024], line[128], *pos;
620 FILE *f;
621 unsigned long val;
622
623 memset(data, 0, sizeof(*data));
624 snprintf(buf, sizeof(buf), "/proc/net/madwifi/%s/" MACSTR,
625 drv->iface, MAC2STR(addr));
626
627 f = fopen(buf, "r");
628 if (!f) {
629 if (memcmp(addr, drv->acct_mac, ETH_ALEN) != 0)
630 return -1;
631 memcpy(data, &drv->acct_data, sizeof(*data));
632 return 0;
633 }
634 /* Need to read proc file with in one piece, so use large enough
635 * buffer. */
636 setbuffer(f, buf, sizeof(buf));
637
638 while (fgets(line, sizeof(line), f)) {
639 pos = strchr(line, '=');
640 if (!pos)
641 continue;
642 *pos++ = '\0';
643 val = strtoul(pos, NULL, 10);
644 if (strcmp(line, "rx_packets") == 0)
645 data->rx_packets = val;
646 else if (strcmp(line, "tx_packets") == 0)
647 data->tx_packets = val;
648 else if (strcmp(line, "rx_bytes") == 0)
649 data->rx_bytes = val;
650 else if (strcmp(line, "tx_bytes") == 0)
651 data->tx_bytes = val;
652 }
653
654 fclose(f);
655
656 return 0;
657 #endif /* MADWIFI_BSD */
658 }
659
660
661 static int
662 madwifi_sta_clear_stats(void *priv, const u8 *addr)
663 {
664 #if defined(MADWIFI_BSD) && defined(IEEE80211_MLME_CLEAR_STATS)
665 struct madwifi_driver_data *drv = priv;
666 struct ieee80211req_mlme mlme;
667 int ret;
668
669 wpa_printf(MSG_DEBUG, "%s: addr=%s", __func__, ether_sprintf(addr));
670
671 mlme.im_op = IEEE80211_MLME_CLEAR_STATS;
672 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
673 ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme,
674 sizeof(mlme));
675 if (ret < 0) {
676 wpa_printf(MSG_DEBUG, "%s: Failed to clear STA stats (addr "
677 MACSTR ")", __func__, MAC2STR(addr));
678 }
679
680 return ret;
681 #else /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
682 return 0; /* FIX */
683 #endif /* MADWIFI_BSD && IEEE80211_MLME_CLEAR_STATS */
684 }
685
686
687 static int
688 madwifi_set_opt_ie(const char *ifname, void *priv, const u8 *ie, size_t ie_len)
689 {
690 /*
691 * Do nothing; we setup parameters at startup that define the
692 * contents of the beacon information element.
693 */
694 return 0;
695 }
696
697 static int
698 madwifi_sta_deauth(void *priv, const u8 *addr, int reason_code)
699 {
700 struct madwifi_driver_data *drv = priv;
701 struct ieee80211req_mlme mlme;
702 int ret;
703
704 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
705 __func__, ether_sprintf(addr), reason_code);
706
707 mlme.im_op = IEEE80211_MLME_DEAUTH;
708 mlme.im_reason = reason_code;
709 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
710 ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
711 if (ret < 0) {
712 wpa_printf(MSG_DEBUG, "%s: Failed to deauth STA (addr " MACSTR
713 " reason %d)",
714 __func__, MAC2STR(addr), reason_code);
715 }
716
717 return ret;
718 }
719
720 static int
721 madwifi_sta_disassoc(void *priv, const u8 *addr, int reason_code)
722 {
723 struct madwifi_driver_data *drv = priv;
724 struct ieee80211req_mlme mlme;
725 int ret;
726
727 wpa_printf(MSG_DEBUG, "%s: addr=%s reason_code=%d",
728 __func__, ether_sprintf(addr), reason_code);
729
730 mlme.im_op = IEEE80211_MLME_DISASSOC;
731 mlme.im_reason = reason_code;
732 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
733 ret = set80211priv(drv, IEEE80211_IOCTL_SETMLME, &mlme, sizeof(mlme));
734 if (ret < 0) {
735 wpa_printf(MSG_DEBUG, "%s: Failed to disassoc STA (addr "
736 MACSTR " reason %d)",
737 __func__, MAC2STR(addr), reason_code);
738 }
739
740 return ret;
741 }
742
743 #ifdef CONFIG_WPS
744 #ifdef IEEE80211_IOCTL_FILTERFRAME
745 static void madwifi_raw_receive(void *ctx, const u8 *src_addr, const u8 *buf,
746 size_t len)
747 {
748 struct madwifi_driver_data *drv = ctx;
749 const struct ieee80211_mgmt *mgmt;
750 const u8 *end, *ie;
751 u16 fc;
752 size_t ie_len;
753
754 /* Send Probe Request information to WPS processing */
755
756 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
757 return;
758 mgmt = (const struct ieee80211_mgmt *) buf;
759
760 fc = le_to_host16(mgmt->frame_control);
761 if (WLAN_FC_GET_TYPE(fc) != WLAN_FC_TYPE_MGMT ||
762 WLAN_FC_GET_STYPE(fc) != WLAN_FC_STYPE_PROBE_REQ)
763 return;
764
765 end = buf + len;
766 ie = mgmt->u.probe_req.variable;
767 ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
768
769 hostapd_wps_probe_req_rx(drv->hapd, mgmt->sa, ie, ie_len);
770 }
771 #endif /* IEEE80211_IOCTL_FILTERFRAME */
772 #endif /* CONFIG_WPS */
773
774 static int madwifi_receive_probe_req(struct madwifi_driver_data *drv)
775 {
776 int ret = 0;
777 #ifdef CONFIG_WPS
778 #ifdef IEEE80211_IOCTL_FILTERFRAME
779 struct ieee80211req_set_filter filt;
780
781 wpa_printf(MSG_DEBUG, "%s Enter", __func__);
782 filt.app_filterype = IEEE80211_FILTER_TYPE_PROBE_REQ;
783
784 ret = set80211priv(drv, IEEE80211_IOCTL_FILTERFRAME, &filt,
785 sizeof(struct ieee80211req_set_filter));
786 if (ret)
787 return ret;
788
789 drv->sock_raw = l2_packet_init(drv->iface, NULL, ETH_P_80211_RAW,
790 madwifi_raw_receive, drv, 1);
791 if (drv->sock_raw == NULL)
792 return -1;
793 #endif /* IEEE80211_IOCTL_FILTERFRAME */
794 #endif /* CONFIG_WPS */
795 return ret;
796 }
797
798 static int
799 madwifi_del_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
800 {
801 struct hostapd_data *hapd = drv->hapd;
802 struct sta_info *sta;
803
804 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
805 HOSTAPD_LEVEL_INFO, "disassociated");
806
807 sta = ap_get_sta(hapd, addr);
808 if (sta != NULL) {
809 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
810 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
811 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
812 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
813 ap_free_sta(hapd, sta);
814 }
815 return 0;
816 }
817
818 #ifdef CONFIG_WPS
819 static int
820 madwifi_set_wps_ie(void *priv, const u8 *ie, size_t len, u32 frametype)
821 {
822 struct madwifi_driver_data *drv = priv;
823 u8 buf[256];
824 struct ieee80211req_getset_appiebuf *beac_ie;
825
826 wpa_printf(MSG_DEBUG, "%s buflen = %lu", __func__,
827 (unsigned long) len);
828
829 beac_ie = (struct ieee80211req_getset_appiebuf *) buf;
830 beac_ie->app_frmtype = frametype;
831 beac_ie->app_buflen = len;
832 memcpy(&(beac_ie->app_buf[0]), ie, len);
833
834 return set80211priv(drv, IEEE80211_IOCTL_SET_APPIEBUF, beac_ie,
835 sizeof(struct ieee80211req_getset_appiebuf) + len);
836 }
837
838 static int
839 madwifi_set_wps_beacon_ie(const char *ifname, void *priv, const u8 *ie,
840 size_t len)
841 {
842 return madwifi_set_wps_ie(priv, ie, len, IEEE80211_APPIE_FRAME_BEACON);
843 }
844
845 static int
846 madwifi_set_wps_probe_resp_ie(const char *ifname, void *priv, const u8 *ie,
847 size_t len)
848 {
849 return madwifi_set_wps_ie(priv, ie, len,
850 IEEE80211_APPIE_FRAME_PROBE_RESP);
851 }
852 #else /* CONFIG_WPS */
853 #define madwifi_set_wps_beacon_ie NULL
854 #define madwifi_set_wps_probe_resp_ie NULL
855 #endif /* CONFIG_WPS */
856
857 static int
858 madwifi_process_wpa_ie(struct madwifi_driver_data *drv, struct sta_info *sta)
859 {
860 struct hostapd_data *hapd = drv->hapd;
861 struct ieee80211req_wpaie ie;
862 int ielen, res;
863 u8 *iebuf;
864
865 /*
866 * Fetch negotiated WPA/RSN parameters from the system.
867 */
868 memset(&ie, 0, sizeof(ie));
869 memcpy(ie.wpa_macaddr, sta->addr, IEEE80211_ADDR_LEN);
870 if (set80211priv(drv, IEEE80211_IOCTL_GETWPAIE, &ie, sizeof(ie))) {
871 wpa_printf(MSG_ERROR, "%s: Failed to get WPA/RSN IE",
872 __func__);
873 printf("Failed to get WPA/RSN information element.\n");
874 return -1; /* XXX not right */
875 }
876 wpa_hexdump(MSG_MSGDUMP, "madwifi req WPA IE",
877 ie.wpa_ie, IEEE80211_MAX_OPT_IE);
878 wpa_hexdump(MSG_MSGDUMP, "madwifi req RSN IE",
879 ie.rsn_ie, IEEE80211_MAX_OPT_IE);
880 iebuf = ie.wpa_ie;
881 /* madwifi seems to return some random data if WPA/RSN IE is not set.
882 * Assume the IE was not included if the IE type is unknown. */
883 if (iebuf[0] != WLAN_EID_VENDOR_SPECIFIC)
884 iebuf[1] = 0;
885 #ifdef MADWIFI_NG
886 if (iebuf[1] == 0 && ie.rsn_ie[1] > 0) {
887 /* madwifi-ng svn #1453 added rsn_ie. Use it, if wpa_ie was not
888 * set. This is needed for WPA2. */
889 iebuf = ie.rsn_ie;
890 if (iebuf[0] != WLAN_EID_RSN)
891 iebuf[1] = 0;
892 }
893 #endif /* MADWIFI_NG */
894 ielen = iebuf[1];
895 if (ielen == 0) {
896 #ifdef CONFIG_WPS
897 if (hapd->conf->wps_state) {
898 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE "
899 "in (Re)Association Request - possible WPS "
900 "use");
901 sta->flags |= WLAN_STA_MAYBE_WPS;
902 return 0;
903 }
904 #endif /* CONFIG_WPS */
905 printf("No WPA/RSN information element for station!?\n");
906 return -1; /* XXX not right */
907 }
908 ielen += 2;
909 if (sta->wpa_sm == NULL)
910 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
911 if (sta->wpa_sm == NULL) {
912 printf("Failed to initialize WPA state machine\n");
913 return -1;
914 }
915 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
916 iebuf, ielen, NULL, 0);
917 if (res != WPA_IE_OK) {
918 printf("WPA/RSN information element rejected? (res %u)\n", res);
919 return -1;
920 }
921 return 0;
922 }
923
924 static int
925 madwifi_new_sta(struct madwifi_driver_data *drv, u8 addr[IEEE80211_ADDR_LEN])
926 {
927 struct hostapd_data *hapd = drv->hapd;
928 struct sta_info *sta;
929 int new_assoc;
930
931 hostapd_logger(hapd, addr, HOSTAPD_MODULE_IEEE80211,
932 HOSTAPD_LEVEL_INFO, "associated");
933
934 sta = ap_get_sta(hapd, addr);
935 if (sta) {
936 accounting_sta_stop(hapd, sta);
937 } else {
938 sta = ap_sta_add(hapd, addr);
939 if (sta == NULL)
940 return -1;
941 }
942
943 if (memcmp(addr, drv->acct_mac, ETH_ALEN) == 0) {
944 /* Cached accounting data is not valid anymore. */
945 memset(drv->acct_mac, 0, ETH_ALEN);
946 memset(&drv->acct_data, 0, sizeof(drv->acct_data));
947 }
948
949 if (hapd->conf->wpa) {
950 if (madwifi_process_wpa_ie(drv, sta))
951 return -1;
952 }
953
954 /*
955 * Now that the internal station state is setup
956 * kick the authenticator into action.
957 */
958 new_assoc = (sta->flags & WLAN_STA_ASSOC) == 0;
959 sta->flags |= WLAN_STA_AUTH | WLAN_STA_ASSOC;
960 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
961 hostapd_new_assoc_sta(hapd, sta, !new_assoc);
962 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
963 return 0;
964 }
965
966 static void
967 madwifi_wireless_event_wireless_custom(struct madwifi_driver_data *drv,
968 char *custom)
969 {
970 wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
971
972 if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
973 char *pos;
974 u8 addr[ETH_ALEN];
975 pos = strstr(custom, "addr=");
976 if (pos == NULL) {
977 wpa_printf(MSG_DEBUG,
978 "MLME-MICHAELMICFAILURE.indication "
979 "without sender address ignored");
980 return;
981 }
982 pos += 5;
983 if (hwaddr_aton(pos, addr) == 0) {
984 ieee80211_michael_mic_failure(drv->hapd, addr, 1);
985 } else {
986 wpa_printf(MSG_DEBUG,
987 "MLME-MICHAELMICFAILURE.indication "
988 "with invalid MAC address");
989 }
990 } else if (strncmp(custom, "STA-TRAFFIC-STAT", 16) == 0) {
991 char *key, *value;
992 u32 val;
993 key = custom;
994 while ((key = strchr(key, '\n')) != NULL) {
995 key++;
996 value = strchr(key, '=');
997 if (value == NULL)
998 continue;
999 *value++ = '\0';
1000 val = strtoul(value, NULL, 10);
1001 if (strcmp(key, "mac") == 0)
1002 hwaddr_aton(value, drv->acct_mac);
1003 else if (strcmp(key, "rx_packets") == 0)
1004 drv->acct_data.rx_packets = val;
1005 else if (strcmp(key, "tx_packets") == 0)
1006 drv->acct_data.tx_packets = val;
1007 else if (strcmp(key, "rx_bytes") == 0)
1008 drv->acct_data.rx_bytes = val;
1009 else if (strcmp(key, "tx_bytes") == 0)
1010 drv->acct_data.tx_bytes = val;
1011 key = value;
1012 }
1013 }
1014 }
1015
1016 static void
1017 madwifi_wireless_event_wireless(struct madwifi_driver_data *drv,
1018 char *data, int len)
1019 {
1020 struct iw_event iwe_buf, *iwe = &iwe_buf;
1021 char *pos, *end, *custom, *buf;
1022
1023 pos = data;
1024 end = data + len;
1025
1026 while (pos + IW_EV_LCP_LEN <= end) {
1027 /* Event data may be unaligned, so make a local, aligned copy
1028 * before processing. */
1029 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
1030 wpa_printf(MSG_MSGDUMP, "Wireless event: cmd=0x%x len=%d",
1031 iwe->cmd, iwe->len);
1032 if (iwe->len <= IW_EV_LCP_LEN)
1033 return;
1034
1035 custom = pos + IW_EV_POINT_LEN;
1036 if (drv->we_version > 18 &&
1037 (iwe->cmd == IWEVMICHAELMICFAILURE ||
1038 iwe->cmd == IWEVCUSTOM)) {
1039 /* WE-19 removed the pointer from struct iw_point */
1040 char *dpos = (char *) &iwe_buf.u.data.length;
1041 int dlen = dpos - (char *) &iwe_buf;
1042 memcpy(dpos, pos + IW_EV_LCP_LEN,
1043 sizeof(struct iw_event) - dlen);
1044 } else {
1045 memcpy(&iwe_buf, pos, sizeof(struct iw_event));
1046 custom += IW_EV_POINT_OFF;
1047 }
1048
1049 switch (iwe->cmd) {
1050 case IWEVEXPIRED:
1051 madwifi_del_sta(drv, (u8 *) iwe->u.addr.sa_data);
1052 break;
1053 case IWEVREGISTERED:
1054 madwifi_new_sta(drv, (u8 *) iwe->u.addr.sa_data);
1055 break;
1056 case IWEVCUSTOM:
1057 if (custom + iwe->u.data.length > end)
1058 return;
1059 buf = malloc(iwe->u.data.length + 1);
1060 if (buf == NULL)
1061 return; /* XXX */
1062 memcpy(buf, custom, iwe->u.data.length);
1063 buf[iwe->u.data.length] = '\0';
1064 madwifi_wireless_event_wireless_custom(drv, buf);
1065 free(buf);
1066 break;
1067 }
1068
1069 pos += iwe->len;
1070 }
1071 }
1072
1073
1074 static void
1075 madwifi_wireless_event_rtm_newlink(struct madwifi_driver_data *drv,
1076 struct nlmsghdr *h, int len)
1077 {
1078 struct ifinfomsg *ifi;
1079 int attrlen, nlmsg_len, rta_len;
1080 struct rtattr * attr;
1081
1082 if (len < (int) sizeof(*ifi))
1083 return;
1084
1085 ifi = NLMSG_DATA(h);
1086
1087 if (ifi->ifi_index != drv->ifindex)
1088 return;
1089
1090 nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
1091
1092 attrlen = h->nlmsg_len - nlmsg_len;
1093 if (attrlen < 0)
1094 return;
1095
1096 attr = (struct rtattr *) (((char *) ifi) + nlmsg_len);
1097
1098 rta_len = RTA_ALIGN(sizeof(struct rtattr));
1099 while (RTA_OK(attr, attrlen)) {
1100 if (attr->rta_type == IFLA_WIRELESS) {
1101 madwifi_wireless_event_wireless(
1102 drv, ((char *) attr) + rta_len,
1103 attr->rta_len - rta_len);
1104 }
1105 attr = RTA_NEXT(attr, attrlen);
1106 }
1107 }
1108
1109
1110 static void
1111 madwifi_wireless_event_receive(int sock, void *eloop_ctx, void *sock_ctx)
1112 {
1113 char buf[256];
1114 int left;
1115 struct sockaddr_nl from;
1116 socklen_t fromlen;
1117 struct nlmsghdr *h;
1118 struct madwifi_driver_data *drv = eloop_ctx;
1119
1120 fromlen = sizeof(from);
1121 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
1122 (struct sockaddr *) &from, &fromlen);
1123 if (left < 0) {
1124 if (errno != EINTR && errno != EAGAIN)
1125 perror("recvfrom(netlink)");
1126 return;
1127 }
1128
1129 h = (struct nlmsghdr *) buf;
1130 while (left >= (int) sizeof(*h)) {
1131 int len, plen;
1132
1133 len = h->nlmsg_len;
1134 plen = len - sizeof(*h);
1135 if (len > left || plen < 0) {
1136 printf("Malformed netlink message: "
1137 "len=%d left=%d plen=%d\n",
1138 len, left, plen);
1139 break;
1140 }
1141
1142 switch (h->nlmsg_type) {
1143 case RTM_NEWLINK:
1144 madwifi_wireless_event_rtm_newlink(drv, h, plen);
1145 break;
1146 }
1147
1148 len = NLMSG_ALIGN(len);
1149 left -= len;
1150 h = (struct nlmsghdr *) ((char *) h + len);
1151 }
1152
1153 if (left > 0) {
1154 printf("%d extra bytes in the end of netlink message\n", left);
1155 }
1156 }
1157
1158
1159 static int
1160 madwifi_get_we_version(struct madwifi_driver_data *drv)
1161 {
1162 struct iw_range *range;
1163 struct iwreq iwr;
1164 int minlen;
1165 size_t buflen;
1166
1167 drv->we_version = 0;
1168
1169 /*
1170 * Use larger buffer than struct iw_range in order to allow the
1171 * structure to grow in the future.
1172 */
1173 buflen = sizeof(struct iw_range) + 500;
1174 range = os_zalloc(buflen);
1175 if (range == NULL)
1176 return -1;
1177
1178 memset(&iwr, 0, sizeof(iwr));
1179 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1180 iwr.u.data.pointer = (caddr_t) range;
1181 iwr.u.data.length = buflen;
1182
1183 minlen = ((char *) &range->enc_capa) - (char *) range +
1184 sizeof(range->enc_capa);
1185
1186 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
1187 perror("ioctl[SIOCGIWRANGE]");
1188 free(range);
1189 return -1;
1190 } else if (iwr.u.data.length >= minlen &&
1191 range->we_version_compiled >= 18) {
1192 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
1193 "WE(source)=%d enc_capa=0x%x",
1194 range->we_version_compiled,
1195 range->we_version_source,
1196 range->enc_capa);
1197 drv->we_version = range->we_version_compiled;
1198 }
1199
1200 free(range);
1201 return 0;
1202 }
1203
1204
1205 static int
1206 madwifi_wireless_event_init(void *priv)
1207 {
1208 struct madwifi_driver_data *drv = priv;
1209 int s;
1210 struct sockaddr_nl local;
1211
1212 madwifi_get_we_version(drv);
1213
1214 drv->wext_sock = -1;
1215
1216 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
1217 if (s < 0) {
1218 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
1219 return -1;
1220 }
1221
1222 memset(&local, 0, sizeof(local));
1223 local.nl_family = AF_NETLINK;
1224 local.nl_groups = RTMGRP_LINK;
1225 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
1226 perror("bind(netlink)");
1227 close(s);
1228 return -1;
1229 }
1230
1231 eloop_register_read_sock(s, madwifi_wireless_event_receive, drv, NULL);
1232 drv->wext_sock = s;
1233
1234 return 0;
1235 }
1236
1237
1238 static void
1239 madwifi_wireless_event_deinit(void *priv)
1240 {
1241 struct madwifi_driver_data *drv = priv;
1242
1243 if (drv != NULL) {
1244 if (drv->wext_sock < 0)
1245 return;
1246 eloop_unregister_read_sock(drv->wext_sock);
1247 close(drv->wext_sock);
1248 }
1249 }
1250
1251
1252 static int
1253 madwifi_send_eapol(void *priv, const u8 *addr, const u8 *data, size_t data_len,
1254 int encrypt, const u8 *own_addr)
1255 {
1256 struct madwifi_driver_data *drv = priv;
1257 unsigned char buf[3000];
1258 unsigned char *bp = buf;
1259 struct l2_ethhdr *eth;
1260 size_t len;
1261 int status;
1262
1263 /*
1264 * Prepend the Ethernet header. If the caller left us
1265 * space at the front we could just insert it but since
1266 * we don't know we copy to a local buffer. Given the frequency
1267 * and size of frames this probably doesn't matter.
1268 */
1269 len = data_len + sizeof(struct l2_ethhdr);
1270 if (len > sizeof(buf)) {
1271 bp = malloc(len);
1272 if (bp == NULL) {
1273 printf("EAPOL frame discarded, cannot malloc temp "
1274 "buffer of size %lu!\n", (unsigned long) len);
1275 return -1;
1276 }
1277 }
1278 eth = (struct l2_ethhdr *) bp;
1279 memcpy(eth->h_dest, addr, ETH_ALEN);
1280 memcpy(eth->h_source, own_addr, ETH_ALEN);
1281 eth->h_proto = htons(ETH_P_EAPOL);
1282 memcpy(eth+1, data, data_len);
1283
1284 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", bp, len);
1285
1286 status = l2_packet_send(drv->sock_xmit, addr, ETH_P_EAPOL, bp, len);
1287
1288 if (bp != buf)
1289 free(bp);
1290 return status;
1291 }
1292
1293 static void
1294 handle_read(void *ctx, const u8 *src_addr, const u8 *buf, size_t len)
1295 {
1296 struct madwifi_driver_data *drv = ctx;
1297 struct hostapd_data *hapd = drv->hapd;
1298 struct sta_info *sta;
1299
1300 sta = ap_get_sta(hapd, src_addr);
1301 if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1302 printf("Data frame from not associated STA %s\n",
1303 ether_sprintf(src_addr));
1304 /* XXX cannot happen */
1305 return;
1306 }
1307 ieee802_1x_receive(hapd, src_addr, buf + sizeof(struct l2_ethhdr),
1308 len - sizeof(struct l2_ethhdr));
1309 }
1310
1311 static void *
1312 madwifi_init(struct hostapd_data *hapd)
1313 {
1314 struct madwifi_driver_data *drv;
1315 struct ifreq ifr;
1316 struct iwreq iwr;
1317
1318 drv = os_zalloc(sizeof(struct madwifi_driver_data));
1319 if (drv == NULL) {
1320 printf("Could not allocate memory for madwifi driver data\n");
1321 return NULL;
1322 }
1323
1324 drv->hapd = hapd;
1325 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1326 if (drv->ioctl_sock < 0) {
1327 perror("socket[PF_INET,SOCK_DGRAM]");
1328 goto bad;
1329 }
1330 memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
1331
1332 memset(&ifr, 0, sizeof(ifr));
1333 os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
1334 if (ioctl(drv->ioctl_sock, SIOCGIFINDEX, &ifr) != 0) {
1335 perror("ioctl(SIOCGIFINDEX)");
1336 goto bad;
1337 }
1338 drv->ifindex = ifr.ifr_ifindex;
1339
1340 drv->sock_xmit = l2_packet_init(drv->iface, NULL, ETH_P_EAPOL,
1341 handle_read, drv, 1);
1342 if (drv->sock_xmit == NULL)
1343 goto bad;
1344 if (l2_packet_get_own_addr(drv->sock_xmit, hapd->own_addr))
1345 goto bad;
1346 if (hapd->conf->bridge[0] != '\0') {
1347 wpa_printf(MSG_DEBUG, "Configure bridge %s for EAPOL traffic.",
1348 hapd->conf->bridge);
1349 drv->sock_recv = l2_packet_init(hapd->conf->bridge, NULL,
1350 ETH_P_EAPOL, handle_read, drv,
1351 1);
1352 if (drv->sock_recv == NULL)
1353 goto bad;
1354 } else
1355 drv->sock_recv = drv->sock_xmit;
1356
1357 memset(&iwr, 0, sizeof(iwr));
1358 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1359
1360 iwr.u.mode = IW_MODE_MASTER;
1361
1362 if (ioctl(drv->ioctl_sock, SIOCSIWMODE, &iwr) < 0) {
1363 perror("ioctl[SIOCSIWMODE]");
1364 printf("Could not set interface to master mode!\n");
1365 goto bad;
1366 }
1367
1368 madwifi_set_iface_flags(drv, 0); /* mark down during setup */
1369 madwifi_set_privacy(drv->iface, drv, 0); /* default to no privacy */
1370
1371 madwifi_receive_probe_req(drv);
1372
1373 return drv;
1374 bad:
1375 if (drv->sock_xmit != NULL)
1376 l2_packet_deinit(drv->sock_xmit);
1377 if (drv->ioctl_sock >= 0)
1378 close(drv->ioctl_sock);
1379 if (drv != NULL)
1380 free(drv);
1381 return NULL;
1382 }
1383
1384
1385 static void
1386 madwifi_deinit(void *priv)
1387 {
1388 struct madwifi_driver_data *drv = priv;
1389
1390 (void) madwifi_set_iface_flags(drv, 0);
1391 if (drv->ioctl_sock >= 0)
1392 close(drv->ioctl_sock);
1393 if (drv->sock_recv != NULL && drv->sock_recv != drv->sock_xmit)
1394 l2_packet_deinit(drv->sock_recv);
1395 if (drv->sock_xmit != NULL)
1396 l2_packet_deinit(drv->sock_xmit);
1397 if (drv->sock_raw)
1398 l2_packet_deinit(drv->sock_raw);
1399 free(drv);
1400 }
1401
1402 static int
1403 madwifi_set_ssid(const char *ifname, void *priv, const u8 *buf, int len)
1404 {
1405 struct madwifi_driver_data *drv = priv;
1406 struct iwreq iwr;
1407
1408 memset(&iwr, 0, sizeof(iwr));
1409 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1410 iwr.u.essid.flags = 1; /* SSID active */
1411 iwr.u.essid.pointer = (caddr_t) buf;
1412 iwr.u.essid.length = len + 1;
1413
1414 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
1415 perror("ioctl[SIOCSIWESSID]");
1416 printf("len=%d\n", len);
1417 return -1;
1418 }
1419 return 0;
1420 }
1421
1422 static int
1423 madwifi_get_ssid(const char *ifname, void *priv, u8 *buf, int len)
1424 {
1425 struct madwifi_driver_data *drv = priv;
1426 struct iwreq iwr;
1427 int ret = 0;
1428
1429 memset(&iwr, 0, sizeof(iwr));
1430 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1431 iwr.u.essid.pointer = (caddr_t) buf;
1432 iwr.u.essid.length = len;
1433
1434 if (ioctl(drv->ioctl_sock, SIOCGIWESSID, &iwr) < 0) {
1435 perror("ioctl[SIOCGIWESSID]");
1436 ret = -1;
1437 } else
1438 ret = iwr.u.essid.length;
1439
1440 return ret;
1441 }
1442
1443 static int
1444 madwifi_set_countermeasures(void *priv, int enabled)
1445 {
1446 struct madwifi_driver_data *drv = priv;
1447 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1448 return set80211param(drv, IEEE80211_PARAM_COUNTERMEASURES, enabled);
1449 }
1450
1451 static int
1452 madwifi_commit(void *priv)
1453 {
1454 return madwifi_set_iface_flags(priv, 1);
1455 }
1456
1457 const struct wpa_driver_ops wpa_driver_madwifi_ops = {
1458 .name = "madwifi",
1459 .init = madwifi_init,
1460 .deinit = madwifi_deinit,
1461 .set_ieee8021x = madwifi_set_ieee8021x,
1462 .set_privacy = madwifi_set_privacy,
1463 .set_encryption = madwifi_set_key,
1464 .get_seqnum = madwifi_get_seqnum,
1465 .flush = madwifi_flush,
1466 .set_generic_elem = madwifi_set_opt_ie,
1467 .wireless_event_init = madwifi_wireless_event_init,
1468 .wireless_event_deinit = madwifi_wireless_event_deinit,
1469 .sta_set_flags = madwifi_sta_set_flags,
1470 .read_sta_data = madwifi_read_sta_driver_data,
1471 .send_eapol = madwifi_send_eapol,
1472 .sta_disassoc = madwifi_sta_disassoc,
1473 .sta_deauth = madwifi_sta_deauth,
1474 .set_ssid = madwifi_set_ssid,
1475 .get_ssid = madwifi_get_ssid,
1476 .set_countermeasures = madwifi_set_countermeasures,
1477 .sta_clear_stats = madwifi_sta_clear_stats,
1478 .commit = madwifi_commit,
1479 .set_wps_beacon_ie = madwifi_set_wps_beacon_ie,
1480 .set_wps_probe_resp_ie = madwifi_set_wps_probe_resp_ie,
1481 };
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