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revert between 56095 -> 55830 in arch
[AROS.git] / workbench / network / WirelessManager / src / drivers / driver_hostap.c
blob952f3891abdeb92afe90e5fc2515d83610014087
1 /*
2 * Driver interaction with Linux Host AP driver
3 * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "includes.h"
16 #include <sys/ioctl.h>
17
18 #include "wireless_copy.h"
19 #include "common.h"
20 #include "driver.h"
21 #include "driver_wext.h"
22 #include "eloop.h"
23 #include "driver_hostap.h"
24
25
26 #ifdef HOSTAPD
27
28 #include <net/if_arp.h>
29 #include <netpacket/packet.h>
30
31 #include "priv_netlink.h"
32 #include "netlink.h"
33 #include "linux_ioctl.h"
34 #include "common/ieee802_11_defs.h"
35
36
37 /* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X
38 * frames that might be longer than normal default MTU and they are not
39 * fragmented */
40 #define HOSTAPD_MTU 2290
41
42 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
43
44 struct hostap_driver_data {
45 struct hostapd_data *hapd;
46
47 char iface[IFNAMSIZ + 1];
48 int sock; /* raw packet socket for driver access */
49 int ioctl_sock; /* socket for ioctl() use */
50 struct netlink_data *netlink;
51
52 int we_version;
53
54 u8 *generic_ie;
55 size_t generic_ie_len;
56 u8 *wps_ie;
57 size_t wps_ie_len;
58 };
59
60
61 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
62 int len);
63 static int hostap_set_iface_flags(void *priv, int dev_up);
64
65 static void handle_data(struct hostap_driver_data *drv, u8 *buf, size_t len,
66 u16 stype)
67 {
68 struct ieee80211_hdr *hdr;
69 u16 fc, ethertype;
70 u8 *pos, *sa;
71 size_t left;
72 union wpa_event_data event;
73
74 if (len < sizeof(struct ieee80211_hdr))
75 return;
76
77 hdr = (struct ieee80211_hdr *) buf;
78 fc = le_to_host16(hdr->frame_control);
79
80 if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) != WLAN_FC_TODS) {
81 printf("Not ToDS data frame (fc=0x%04x)\n", fc);
82 return;
83 }
84
85 sa = hdr->addr2;
86 os_memset(&event, 0, sizeof(event));
87 event.rx_from_unknown.frame = buf;
88 event.rx_from_unknown.len = len;
89 wpa_supplicant_event(drv->hapd, EVENT_RX_FROM_UNKNOWN, &event);
90
91 pos = (u8 *) (hdr + 1);
92 left = len - sizeof(*hdr);
93
94 if (left < sizeof(rfc1042_header)) {
95 printf("Too short data frame\n");
96 return;
97 }
98
99 if (memcmp(pos, rfc1042_header, sizeof(rfc1042_header)) != 0) {
100 printf("Data frame with no RFC1042 header\n");
101 return;
102 }
103 pos += sizeof(rfc1042_header);
104 left -= sizeof(rfc1042_header);
105
106 if (left < 2) {
107 printf("No ethertype in data frame\n");
108 return;
109 }
110
111 ethertype = WPA_GET_BE16(pos);
112 pos += 2;
113 left -= 2;
114 switch (ethertype) {
115 case ETH_P_PAE:
116 drv_event_eapol_rx(drv->hapd, sa, pos, left);
117 break;
118
119 default:
120 printf("Unknown ethertype 0x%04x in data frame\n", ethertype);
121 break;
122 }
123 }
124
125
126 static void handle_tx_callback(struct hostap_driver_data *drv, u8 *buf,
127 size_t len, int ok)
128 {
129 struct ieee80211_hdr *hdr;
130 u16 fc;
131 union wpa_event_data event;
132
133 hdr = (struct ieee80211_hdr *) buf;
134 fc = le_to_host16(hdr->frame_control);
135
136 os_memset(&event, 0, sizeof(event));
137 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
138 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
139 event.tx_status.dst = hdr->addr1;
140 event.tx_status.data = buf;
141 event.tx_status.data_len = len;
142 event.tx_status.ack = ok;
143 wpa_supplicant_event(drv->hapd, EVENT_TX_STATUS, &event);
144 }
145
146
147 static void handle_frame(struct hostap_driver_data *drv, u8 *buf, size_t len)
148 {
149 struct ieee80211_hdr *hdr;
150 u16 fc, extra_len, type, stype;
151 unsigned char *extra = NULL;
152 size_t data_len = len;
153 int ver;
154 union wpa_event_data event;
155
156 /* PSPOLL is only 16 bytes, but driver does not (at least yet) pass
157 * these to user space */
158 if (len < 24) {
159 wpa_printf(MSG_MSGDUMP, "handle_frame: too short (%lu)",
160 (unsigned long) len);
161 return;
162 }
163
164 hdr = (struct ieee80211_hdr *) buf;
165 fc = le_to_host16(hdr->frame_control);
166 type = WLAN_FC_GET_TYPE(fc);
167 stype = WLAN_FC_GET_STYPE(fc);
168
169 if (type != WLAN_FC_TYPE_MGMT || stype != WLAN_FC_STYPE_BEACON) {
170 wpa_hexdump(MSG_MSGDUMP, "Received management frame",
171 buf, len);
172 }
173
174 ver = fc & WLAN_FC_PVER;
175
176 /* protocol version 3 is reserved for indicating extra data after the
177 * payload, version 2 for indicating ACKed frame (TX callbacks), and
178 * version 1 for indicating failed frame (no ACK, TX callbacks) */
179 if (ver == 3) {
180 u8 *pos = buf + len - 2;
181 extra_len = WPA_GET_LE16(pos);
182 printf("extra data in frame (elen=%d)\n", extra_len);
183 if ((size_t) extra_len + 2 > len) {
184 printf(" extra data overflow\n");
185 return;
186 }
187 len -= extra_len + 2;
188 extra = buf + len;
189 } else if (ver == 1 || ver == 2) {
190 handle_tx_callback(drv, buf, data_len, ver == 2 ? 1 : 0);
191 return;
192 } else if (ver != 0) {
193 printf("unknown protocol version %d\n", ver);
194 return;
195 }
196
197 switch (type) {
198 case WLAN_FC_TYPE_MGMT:
199 os_memset(&event, 0, sizeof(event));
200 event.rx_mgmt.frame = buf;
201 event.rx_mgmt.frame_len = data_len;
202 wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT, &event);
203 break;
204 case WLAN_FC_TYPE_CTRL:
205 wpa_printf(MSG_DEBUG, "CTRL");
206 break;
207 case WLAN_FC_TYPE_DATA:
208 wpa_printf(MSG_DEBUG, "DATA");
209 handle_data(drv, buf, data_len, stype);
210 break;
211 default:
212 wpa_printf(MSG_DEBUG, "unknown frame type %d", type);
213 break;
214 }
215 }
216
217
218 static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
219 {
220 struct hostap_driver_data *drv = eloop_ctx;
221 int len;
222 unsigned char buf[3000];
223
224 len = recv(sock, buf, sizeof(buf), 0);
225 if (len < 0) {
226 perror("recv");
227 return;
228 }
229
230 handle_frame(drv, buf, len);
231 }
232
233
234 static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr)
235 {
236 struct ifreq ifr;
237 struct sockaddr_ll addr;
238
239 drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
240 if (drv->sock < 0) {
241 perror("socket[PF_PACKET,SOCK_RAW]");
242 return -1;
243 }
244
245 if (eloop_register_read_sock(drv->sock, handle_read, drv, NULL)) {
246 printf("Could not register read socket\n");
247 return -1;
248 }
249
250 memset(&ifr, 0, sizeof(ifr));
251 snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%sap", drv->iface);
252 if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) {
253 perror("ioctl(SIOCGIFINDEX)");
254 return -1;
255 }
256
257 if (hostap_set_iface_flags(drv, 1)) {
258 return -1;
259 }
260
261 memset(&addr, 0, sizeof(addr));
262 addr.sll_family = AF_PACKET;
263 addr.sll_ifindex = ifr.ifr_ifindex;
264 wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
265 addr.sll_ifindex);
266
267 if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
268 perror("bind");
269 return -1;
270 }
271
272 return linux_get_ifhwaddr(drv->sock, drv->iface, own_addr);
273 }
274
275
276 static int hostap_send_mlme(void *priv, const u8 *msg, size_t len)
277 {
278 struct hostap_driver_data *drv = priv;
279 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg;
280 int res;
281
282 /* Request TX callback */
283 hdr->frame_control |= host_to_le16(BIT(1));
284 res = send(drv->sock, msg, len, 0);
285 hdr->frame_control &= ~host_to_le16(BIT(1));
286
287 return res;
288 }
289
290
291 static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data,
292 size_t data_len, int encrypt, const u8 *own_addr)
293 {
294 struct hostap_driver_data *drv = priv;
295 struct ieee80211_hdr *hdr;
296 size_t len;
297 u8 *pos;
298 int res;
299
300 len = sizeof(*hdr) + sizeof(rfc1042_header) + 2 + data_len;
301 hdr = os_zalloc(len);
302 if (hdr == NULL) {
303 printf("malloc() failed for hostapd_send_data(len=%lu)\n",
304 (unsigned long) len);
305 return -1;
306 }
307
308 hdr->frame_control =
309 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
310 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
311 if (encrypt)
312 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
313 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
314 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
315 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
316
317 pos = (u8 *) (hdr + 1);
318 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
319 pos += sizeof(rfc1042_header);
320 *((u16 *) pos) = htons(ETH_P_PAE);
321 pos += 2;
322 memcpy(pos, data, data_len);
323
324 res = hostap_send_mlme(drv, (u8 *) hdr, len);
325 if (res < 0) {
326 wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - "
327 "failed: %d (%s)",
328 (unsigned long) len, errno, strerror(errno));
329 }
330 free(hdr);
331
332 return res;
333 }
334
335
336 static int hostap_sta_set_flags(void *priv, const u8 *addr,
337 int total_flags, int flags_or, int flags_and)
338 {
339 struct hostap_driver_data *drv = priv;
340 struct prism2_hostapd_param param;
341
342 if (flags_or & WPA_STA_AUTHORIZED)
343 flags_or = BIT(5); /* WLAN_STA_AUTHORIZED */
344 if (!(flags_and & WPA_STA_AUTHORIZED))
345 flags_and = ~BIT(5);
346 else
347 flags_and = ~0;
348 memset(&param, 0, sizeof(param));
349 param.cmd = PRISM2_HOSTAPD_SET_FLAGS_STA;
350 memcpy(param.sta_addr, addr, ETH_ALEN);
351 param.u.set_flags_sta.flags_or = flags_or;
352 param.u.set_flags_sta.flags_and = flags_and;
353 return hostapd_ioctl(drv, &param, sizeof(param));
354 }
355
356
357 static int hostap_set_iface_flags(void *priv, int dev_up)
358 {
359 struct hostap_driver_data *drv = priv;
360 struct ifreq ifr;
361 char ifname[IFNAMSIZ];
362
363 os_snprintf(ifname, IFNAMSIZ, "%sap", drv->iface);
364 if (linux_set_iface_flags(drv->ioctl_sock, ifname, dev_up) < 0)
365 return -1;
366
367 if (dev_up) {
368 memset(&ifr, 0, sizeof(ifr));
369 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
370 ifr.ifr_mtu = HOSTAPD_MTU;
371 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
372 perror("ioctl[SIOCSIFMTU]");
373 printf("Setting MTU failed - trying to survive with "
374 "current value\n");
375 }
376 }
377
378 return 0;
379 }
380
381
382 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
383 int len)
384 {
385 struct hostap_driver_data *drv = priv;
386 struct iwreq iwr;
387
388 memset(&iwr, 0, sizeof(iwr));
389 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
390 iwr.u.data.pointer = (caddr_t) param;
391 iwr.u.data.length = len;
392
393 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
394 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
395 return -1;
396 }
397
398 return 0;
399 }
400
401
402 static int wpa_driver_hostap_set_key(const char *ifname, void *priv,
403 enum wpa_alg alg, const u8 *addr,
404 int key_idx, int set_tx,
405 const u8 *seq, size_t seq_len,
406 const u8 *key, size_t key_len)
407 {
408 struct hostap_driver_data *drv = priv;
409 struct prism2_hostapd_param *param;
410 u8 *buf;
411 size_t blen;
412 int ret = 0;
413
414 blen = sizeof(*param) + key_len;
415 buf = os_zalloc(blen);
416 if (buf == NULL)
417 return -1;
418
419 param = (struct prism2_hostapd_param *) buf;
420 param->cmd = PRISM2_SET_ENCRYPTION;
421 if (addr == NULL)
422 memset(param->sta_addr, 0xff, ETH_ALEN);
423 else
424 memcpy(param->sta_addr, addr, ETH_ALEN);
425 switch (alg) {
426 case WPA_ALG_NONE:
427 os_strlcpy((char *) param->u.crypt.alg, "NONE",
428 HOSTAP_CRYPT_ALG_NAME_LEN);
429 break;
430 case WPA_ALG_WEP:
431 os_strlcpy((char *) param->u.crypt.alg, "WEP",
432 HOSTAP_CRYPT_ALG_NAME_LEN);
433 break;
434 case WPA_ALG_TKIP:
435 os_strlcpy((char *) param->u.crypt.alg, "TKIP",
436 HOSTAP_CRYPT_ALG_NAME_LEN);
437 break;
438 case WPA_ALG_CCMP:
439 os_strlcpy((char *) param->u.crypt.alg, "CCMP",
440 HOSTAP_CRYPT_ALG_NAME_LEN);
441 break;
442 default:
443 os_free(buf);
444 return -1;
445 }
446 param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0;
447 param->u.crypt.idx = key_idx;
448 param->u.crypt.key_len = key_len;
449 memcpy((u8 *) (param + 1), key, key_len);
450
451 if (hostapd_ioctl(drv, param, blen)) {
452 printf("Failed to set encryption.\n");
453 ret = -1;
454 }
455 free(buf);
456
457 return ret;
458 }
459
460
461 static int hostap_get_seqnum(const char *ifname, void *priv, const u8 *addr,
462 int idx, u8 *seq)
463 {
464 struct hostap_driver_data *drv = priv;
465 struct prism2_hostapd_param *param;
466 u8 *buf;
467 size_t blen;
468 int ret = 0;
469
470 blen = sizeof(*param) + 32;
471 buf = os_zalloc(blen);
472 if (buf == NULL)
473 return -1;
474
475 param = (struct prism2_hostapd_param *) buf;
476 param->cmd = PRISM2_GET_ENCRYPTION;
477 if (addr == NULL)
478 memset(param->sta_addr, 0xff, ETH_ALEN);
479 else
480 memcpy(param->sta_addr, addr, ETH_ALEN);
481 param->u.crypt.idx = idx;
482
483 if (hostapd_ioctl(drv, param, blen)) {
484 printf("Failed to get encryption.\n");
485 ret = -1;
486 } else {
487 memcpy(seq, param->u.crypt.seq, 8);
488 }
489 free(buf);
490
491 return ret;
492 }
493
494
495 static int hostap_ioctl_prism2param(void *priv, int param, int value)
496 {
497 struct hostap_driver_data *drv = priv;
498 struct iwreq iwr;
499 int *i;
500
501 memset(&iwr, 0, sizeof(iwr));
502 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
503 i = (int *) iwr.u.name;
504 *i++ = param;
505 *i++ = value;
506
507 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) {
508 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]");
509 return -1;
510 }
511
512 return 0;
513 }
514
515
516 static int hostap_set_ieee8021x(void *priv, struct wpa_bss_params *params)
517 {
518 struct hostap_driver_data *drv = priv;
519 int enabled = params->enabled;
520
521 /* enable kernel driver support for IEEE 802.1X */
522 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_IEEE_802_1X, enabled)) {
523 printf("Could not setup IEEE 802.1X support in kernel driver."
524 "\n");
525 return -1;
526 }
527
528 if (!enabled)
529 return 0;
530
531 /* use host driver implementation of encryption to allow
532 * individual keys and passing plaintext EAPOL frames */
533 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_DECRYPT, 1) ||
534 hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_ENCRYPT, 1)) {
535 printf("Could not setup host-based encryption in kernel "
536 "driver.\n");
537 return -1;
538 }
539
540 return 0;
541 }
542
543
544 static int hostap_set_privacy(void *priv, int enabled)
545 {
546 struct hostap_drvier_data *drv = priv;
547
548 return hostap_ioctl_prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED,
549 enabled);
550 }
551
552
553 static int hostap_set_ssid(void *priv, const u8 *buf, int len)
554 {
555 struct hostap_driver_data *drv = priv;
556 struct iwreq iwr;
557
558 memset(&iwr, 0, sizeof(iwr));
559 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
560 iwr.u.essid.flags = 1; /* SSID active */
561 iwr.u.essid.pointer = (caddr_t) buf;
562 iwr.u.essid.length = len + 1;
563
564 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
565 perror("ioctl[SIOCSIWESSID]");
566 printf("len=%d\n", len);
567 return -1;
568 }
569
570 return 0;
571 }
572
573
574 static int hostap_flush(void *priv)
575 {
576 struct hostap_driver_data *drv = priv;
577 struct prism2_hostapd_param param;
578
579 memset(&param, 0, sizeof(param));
580 param.cmd = PRISM2_HOSTAPD_FLUSH;
581 return hostapd_ioctl(drv, &param, sizeof(param));
582 }
583
584
585 static int hostap_read_sta_data(void *priv,
586 struct hostap_sta_driver_data *data,
587 const u8 *addr)
588 {
589 struct hostap_driver_data *drv = priv;
590 char buf[1024], line[128], *pos;
591 FILE *f;
592 unsigned long val;
593
594 memset(data, 0, sizeof(*data));
595 snprintf(buf, sizeof(buf), "/proc/net/hostap/%s/" MACSTR,
596 drv->iface, MAC2STR(addr));
597
598 f = fopen(buf, "r");
599 if (!f)
600 return -1;
601 /* Need to read proc file with in one piece, so use large enough
602 * buffer. */
603 setbuffer(f, buf, sizeof(buf));
604
605 while (fgets(line, sizeof(line), f)) {
606 pos = strchr(line, '=');
607 if (!pos)
608 continue;
609 *pos++ = '\0';
610 val = strtoul(pos, NULL, 10);
611 if (strcmp(line, "rx_packets") == 0)
612 data->rx_packets = val;
613 else if (strcmp(line, "tx_packets") == 0)
614 data->tx_packets = val;
615 else if (strcmp(line, "rx_bytes") == 0)
616 data->rx_bytes = val;
617 else if (strcmp(line, "tx_bytes") == 0)
618 data->tx_bytes = val;
619 }
620
621 fclose(f);
622
623 return 0;
624 }
625
626
627 static int hostap_sta_add(void *priv, struct hostapd_sta_add_params *params)
628 {
629 struct hostap_driver_data *drv = priv;
630 struct prism2_hostapd_param param;
631 int tx_supp_rates = 0;
632 size_t i;
633
634 #define WLAN_RATE_1M BIT(0)
635 #define WLAN_RATE_2M BIT(1)
636 #define WLAN_RATE_5M5 BIT(2)
637 #define WLAN_RATE_11M BIT(3)
638
639 for (i = 0; i < params->supp_rates_len; i++) {
640 if ((params->supp_rates[i] & 0x7f) == 2)
641 tx_supp_rates |= WLAN_RATE_1M;
642 if ((params->supp_rates[i] & 0x7f) == 4)
643 tx_supp_rates |= WLAN_RATE_2M;
644 if ((params->supp_rates[i] & 0x7f) == 11)
645 tx_supp_rates |= WLAN_RATE_5M5;
646 if ((params->supp_rates[i] & 0x7f) == 22)
647 tx_supp_rates |= WLAN_RATE_11M;
648 }
649
650 memset(&param, 0, sizeof(param));
651 param.cmd = PRISM2_HOSTAPD_ADD_STA;
652 memcpy(param.sta_addr, params->addr, ETH_ALEN);
653 param.u.add_sta.aid = params->aid;
654 param.u.add_sta.capability = params->capability;
655 param.u.add_sta.tx_supp_rates = tx_supp_rates;
656 return hostapd_ioctl(drv, &param, sizeof(param));
657 }
658
659
660 static int hostap_sta_remove(void *priv, const u8 *addr)
661 {
662 struct hostap_driver_data *drv = priv;
663 struct prism2_hostapd_param param;
664
665 hostap_sta_set_flags(drv, addr, 0, 0, ~WPA_STA_AUTHORIZED);
666
667 memset(&param, 0, sizeof(param));
668 param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
669 memcpy(param.sta_addr, addr, ETH_ALEN);
670 if (hostapd_ioctl(drv, &param, sizeof(param))) {
671 printf("Could not remove station from kernel driver.\n");
672 return -1;
673 }
674 return 0;
675 }
676
677
678 static int hostap_get_inact_sec(void *priv, const u8 *addr)
679 {
680 struct hostap_driver_data *drv = priv;
681 struct prism2_hostapd_param param;
682
683 memset(&param, 0, sizeof(param));
684 param.cmd = PRISM2_HOSTAPD_GET_INFO_STA;
685 memcpy(param.sta_addr, addr, ETH_ALEN);
686 if (hostapd_ioctl(drv, &param, sizeof(param))) {
687 return -1;
688 }
689
690 return param.u.get_info_sta.inactive_sec;
691 }
692
693
694 static int hostap_sta_clear_stats(void *priv, const u8 *addr)
695 {
696 struct hostap_driver_data *drv = priv;
697 struct prism2_hostapd_param param;
698
699 memset(&param, 0, sizeof(param));
700 param.cmd = PRISM2_HOSTAPD_STA_CLEAR_STATS;
701 memcpy(param.sta_addr, addr, ETH_ALEN);
702 if (hostapd_ioctl(drv, &param, sizeof(param))) {
703 return -1;
704 }
705
706 return 0;
707 }
708
709
710 static int hostapd_ioctl_set_generic_elem(struct hostap_driver_data *drv)
711 {
712 struct prism2_hostapd_param *param;
713 int res;
714 size_t blen, elem_len;
715
716 elem_len = drv->generic_ie_len + drv->wps_ie_len;
717 blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + elem_len;
718 if (blen < sizeof(*param))
719 blen = sizeof(*param);
720
721 param = os_zalloc(blen);
722 if (param == NULL)
723 return -1;
724
725 param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT;
726 param->u.generic_elem.len = elem_len;
727 if (drv->generic_ie) {
728 os_memcpy(param->u.generic_elem.data, drv->generic_ie,
729 drv->generic_ie_len);
730 }
731 if (drv->wps_ie) {
732 os_memcpy(&param->u.generic_elem.data[drv->generic_ie_len],
733 drv->wps_ie, drv->wps_ie_len);
734 }
735 wpa_hexdump(MSG_DEBUG, "hostap: Set generic IE",
736 param->u.generic_elem.data, elem_len);
737 res = hostapd_ioctl(drv, param, blen);
738
739 os_free(param);
740
741 return res;
742 }
743
744
745 static int hostap_set_generic_elem(void *priv,
746 const u8 *elem, size_t elem_len)
747 {
748 struct hostap_driver_data *drv = priv;
749
750 os_free(drv->generic_ie);
751 drv->generic_ie = NULL;
752 drv->generic_ie_len = 0;
753 if (elem) {
754 drv->generic_ie = os_malloc(elem_len);
755 if (drv->generic_ie == NULL)
756 return -1;
757 os_memcpy(drv->generic_ie, elem, elem_len);
758 drv->generic_ie_len = elem_len;
759 }
760
761 return hostapd_ioctl_set_generic_elem(drv);
762 }
763
764
765 static int hostap_set_ap_wps_ie(void *priv, const struct wpabuf *beacon,
766 const struct wpabuf *proberesp)
767 {
768 struct hostap_driver_data *drv = priv;
769
770 /*
771 * Host AP driver supports only one set of extra IEs, so we need to
772 * use the Probe Response IEs also for Beacon frames since they include
773 * more information.
774 */
775
776 os_free(drv->wps_ie);
777 drv->wps_ie = NULL;
778 drv->wps_ie_len = 0;
779 if (proberesp) {
780 drv->wps_ie = os_malloc(wpabuf_len(proberesp));
781 if (drv->wps_ie == NULL)
782 return -1;
783 os_memcpy(drv->wps_ie, wpabuf_head(proberesp),
784 wpabuf_len(proberesp));
785 drv->wps_ie_len = wpabuf_len(proberesp);
786 }
787
788 return hostapd_ioctl_set_generic_elem(drv);
789 }
790
791
792 static void
793 hostapd_wireless_event_wireless_custom(struct hostap_driver_data *drv,
794 char *custom)
795 {
796 wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
797
798 if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
799 char *pos;
800 u8 addr[ETH_ALEN];
801 pos = strstr(custom, "addr=");
802 if (pos == NULL) {
803 wpa_printf(MSG_DEBUG,
804 "MLME-MICHAELMICFAILURE.indication "
805 "without sender address ignored");
806 return;
807 }
808 pos += 5;
809 if (hwaddr_aton(pos, addr) == 0) {
810 union wpa_event_data data;
811 os_memset(&data, 0, sizeof(data));
812 data.michael_mic_failure.unicast = 1;
813 data.michael_mic_failure.src = addr;
814 wpa_supplicant_event(drv->hapd,
815 EVENT_MICHAEL_MIC_FAILURE, &data);
816 } else {
817 wpa_printf(MSG_DEBUG,
818 "MLME-MICHAELMICFAILURE.indication "
819 "with invalid MAC address");
820 }
821 }
822 }
823
824
825 static void hostapd_wireless_event_wireless(struct hostap_driver_data *drv,
826 char *data, int len)
827 {
828 struct iw_event iwe_buf, *iwe = &iwe_buf;
829 char *pos, *end, *custom, *buf;
830
831 pos = data;
832 end = data + len;
833
834 while (pos + IW_EV_LCP_LEN <= end) {
835 /* Event data may be unaligned, so make a local, aligned copy
836 * before processing. */
837 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
838 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
839 iwe->cmd, iwe->len);
840 if (iwe->len <= IW_EV_LCP_LEN)
841 return;
842
843 custom = pos + IW_EV_POINT_LEN;
844 if (drv->we_version > 18 &&
845 (iwe->cmd == IWEVMICHAELMICFAILURE ||
846 iwe->cmd == IWEVCUSTOM)) {
847 /* WE-19 removed the pointer from struct iw_point */
848 char *dpos = (char *) &iwe_buf.u.data.length;
849 int dlen = dpos - (char *) &iwe_buf;
850 memcpy(dpos, pos + IW_EV_LCP_LEN,
851 sizeof(struct iw_event) - dlen);
852 } else {
853 memcpy(&iwe_buf, pos, sizeof(struct iw_event));
854 custom += IW_EV_POINT_OFF;
855 }
856
857 switch (iwe->cmd) {
858 case IWEVCUSTOM:
859 if (custom + iwe->u.data.length > end)
860 return;
861 buf = malloc(iwe->u.data.length + 1);
862 if (buf == NULL)
863 return;
864 memcpy(buf, custom, iwe->u.data.length);
865 buf[iwe->u.data.length] = '\0';
866 hostapd_wireless_event_wireless_custom(drv, buf);
867 free(buf);
868 break;
869 }
870
871 pos += iwe->len;
872 }
873 }
874
875
876 static void hostapd_wireless_event_rtm_newlink(void *ctx,
877 struct ifinfomsg *ifi,
878 u8 *buf, size_t len)
879 {
880 struct hostap_driver_data *drv = ctx;
881 int attrlen, rta_len;
882 struct rtattr *attr;
883
884 /* TODO: use ifi->ifi_index to filter out wireless events from other
885 * interfaces */
886
887 attrlen = len;
888 attr = (struct rtattr *) buf;
889
890 rta_len = RTA_ALIGN(sizeof(struct rtattr));
891 while (RTA_OK(attr, attrlen)) {
892 if (attr->rta_type == IFLA_WIRELESS) {
893 hostapd_wireless_event_wireless(
894 drv, ((char *) attr) + rta_len,
895 attr->rta_len - rta_len);
896 }
897 attr = RTA_NEXT(attr, attrlen);
898 }
899 }
900
901
902 static int hostap_get_we_version(struct hostap_driver_data *drv)
903 {
904 struct iw_range *range;
905 struct iwreq iwr;
906 int minlen;
907 size_t buflen;
908
909 drv->we_version = 0;
910
911 /*
912 * Use larger buffer than struct iw_range in order to allow the
913 * structure to grow in the future.
914 */
915 buflen = sizeof(struct iw_range) + 500;
916 range = os_zalloc(buflen);
917 if (range == NULL)
918 return -1;
919
920 memset(&iwr, 0, sizeof(iwr));
921 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
922 iwr.u.data.pointer = (caddr_t) range;
923 iwr.u.data.length = buflen;
924
925 minlen = ((char *) &range->enc_capa) - (char *) range +
926 sizeof(range->enc_capa);
927
928 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
929 perror("ioctl[SIOCGIWRANGE]");
930 free(range);
931 return -1;
932 } else if (iwr.u.data.length >= minlen &&
933 range->we_version_compiled >= 18) {
934 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
935 "WE(source)=%d enc_capa=0x%x",
936 range->we_version_compiled,
937 range->we_version_source,
938 range->enc_capa);
939 drv->we_version = range->we_version_compiled;
940 }
941
942 free(range);
943 return 0;
944 }
945
946
947 static int hostap_wireless_event_init(struct hostap_driver_data *drv)
948 {
949 struct netlink_config *cfg;
950
951 hostap_get_we_version(drv);
952
953 cfg = os_zalloc(sizeof(*cfg));
954 if (cfg == NULL)
955 return -1;
956 cfg->ctx = drv;
957 cfg->newlink_cb = hostapd_wireless_event_rtm_newlink;
958 drv->netlink = netlink_init(cfg);
959 if (drv->netlink == NULL) {
960 os_free(cfg);
961 return -1;
962 }
963
964 return 0;
965 }
966
967
968 static void * hostap_init(struct hostapd_data *hapd,
969 struct wpa_init_params *params)
970 {
971 struct hostap_driver_data *drv;
972
973 drv = os_zalloc(sizeof(struct hostap_driver_data));
974 if (drv == NULL) {
975 printf("Could not allocate memory for hostapd driver data\n");
976 return NULL;
977 }
978
979 drv->hapd = hapd;
980 drv->ioctl_sock = drv->sock = -1;
981 memcpy(drv->iface, params->ifname, sizeof(drv->iface));
982
983 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
984 if (drv->ioctl_sock < 0) {
985 perror("socket[PF_INET,SOCK_DGRAM]");
986 free(drv);
987 return NULL;
988 }
989
990 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 1)) {
991 printf("Could not enable hostapd mode for interface %s\n",
992 drv->iface);
993 close(drv->ioctl_sock);
994 free(drv);
995 return NULL;
996 }
997
998 if (hostap_init_sockets(drv, params->own_addr) ||
999 hostap_wireless_event_init(drv)) {
1000 close(drv->ioctl_sock);
1001 free(drv);
1002 return NULL;
1003 }
1004
1005 return drv;
1006 }
1007
1008
1009 static void hostap_driver_deinit(void *priv)
1010 {
1011 struct hostap_driver_data *drv = priv;
1012
1013 netlink_deinit(drv->netlink);
1014 (void) hostap_set_iface_flags(drv, 0);
1015 (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 0);
1016 (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD_STA, 0);
1017
1018 if (drv->ioctl_sock >= 0)
1019 close(drv->ioctl_sock);
1020
1021 if (drv->sock >= 0)
1022 close(drv->sock);
1023
1024 os_free(drv->generic_ie);
1025 os_free(drv->wps_ie);
1026
1027 free(drv);
1028 }
1029
1030
1031 static int hostap_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
1032 int reason)
1033 {
1034 struct hostap_driver_data *drv = priv;
1035 struct ieee80211_mgmt mgmt;
1036
1037 memset(&mgmt, 0, sizeof(mgmt));
1038 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1039 WLAN_FC_STYPE_DEAUTH);
1040 memcpy(mgmt.da, addr, ETH_ALEN);
1041 memcpy(mgmt.sa, own_addr, ETH_ALEN);
1042 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
1043 mgmt.u.deauth.reason_code = host_to_le16(reason);
1044 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
1045 sizeof(mgmt.u.deauth));
1046 }
1047
1048
1049 static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
1050 int reason)
1051 {
1052 struct hostap_driver_data *drv = priv;
1053 struct ieee80211_mgmt mgmt;
1054
1055 memset(&mgmt, 0, sizeof(mgmt));
1056 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1057 WLAN_FC_STYPE_DISASSOC);
1058 memcpy(mgmt.da, addr, ETH_ALEN);
1059 memcpy(mgmt.sa, own_addr, ETH_ALEN);
1060 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
1061 mgmt.u.disassoc.reason_code = host_to_le16(reason);
1062 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
1063 sizeof(mgmt.u.disassoc));
1064 }
1065
1066
1067 static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv,
1068 u16 *num_modes,
1069 u16 *flags)
1070 {
1071 struct hostapd_hw_modes *mode;
1072 int i, clen, rlen;
1073 const short chan2freq[14] = {
1074 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1075 2447, 2452, 2457, 2462, 2467, 2472, 2484
1076 };
1077
1078 mode = os_zalloc(sizeof(struct hostapd_hw_modes));
1079 if (mode == NULL)
1080 return NULL;
1081
1082 *num_modes = 1;
1083 *flags = 0;
1084
1085 mode->mode = HOSTAPD_MODE_IEEE80211B;
1086 mode->num_channels = 14;
1087 mode->num_rates = 4;
1088
1089 clen = mode->num_channels * sizeof(struct hostapd_channel_data);
1090 rlen = mode->num_rates * sizeof(int);
1091
1092 mode->channels = os_zalloc(clen);
1093 mode->rates = os_zalloc(rlen);
1094 if (mode->channels == NULL || mode->rates == NULL) {
1095 os_free(mode->channels);
1096 os_free(mode->rates);
1097 os_free(mode);
1098 return NULL;
1099 }
1100
1101 for (i = 0; i < 14; i++) {
1102 mode->channels[i].chan = i + 1;
1103 mode->channels[i].freq = chan2freq[i];
1104 /* TODO: Get allowed channel list from the driver */
1105 if (i >= 11)
1106 mode->channels[i].flag = HOSTAPD_CHAN_DISABLED;
1107 }
1108
1109 mode->rates[0] = 10;
1110 mode->rates[1] = 20;
1111 mode->rates[2] = 55;
1112 mode->rates[3] = 110;
1113
1114 return mode;
1115 }
1116
1117 #else /* HOSTAPD */
1118
1119 struct wpa_driver_hostap_data {
1120 void *wext; /* private data for driver_wext */
1121 void *ctx;
1122 char ifname[IFNAMSIZ + 1];
1123 int sock;
1124 int current_mode; /* infra/adhoc */
1125 };
1126
1127
1128 static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg);
1129
1130
1131 static int hostapd_ioctl(struct wpa_driver_hostap_data *drv,
1132 struct prism2_hostapd_param *param,
1133 int len, int show_err)
1134 {
1135 struct iwreq iwr;
1136
1137 os_memset(&iwr, 0, sizeof(iwr));
1138 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1139 iwr.u.data.pointer = (caddr_t) param;
1140 iwr.u.data.length = len;
1141
1142 if (ioctl(drv->sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
1143 int ret = errno;
1144 if (show_err)
1145 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
1146 return ret;
1147 }
1148
1149 return 0;
1150 }
1151
1152
1153 static int wpa_driver_hostap_set_wpa_ie(struct wpa_driver_hostap_data *drv,
1154 const u8 *wpa_ie, size_t wpa_ie_len)
1155 {
1156 struct prism2_hostapd_param *param;
1157 int res;
1158 size_t blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + wpa_ie_len;
1159 if (blen < sizeof(*param))
1160 blen = sizeof(*param);
1161
1162 param = os_zalloc(blen);
1163 if (param == NULL)
1164 return -1;
1165
1166 param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT;
1167 param->u.generic_elem.len = wpa_ie_len;
1168 os_memcpy(param->u.generic_elem.data, wpa_ie, wpa_ie_len);
1169 res = hostapd_ioctl(drv, param, blen, 1);
1170
1171 os_free(param);
1172
1173 return res;
1174 }
1175
1176
1177 static int prism2param(struct wpa_driver_hostap_data *drv, int param,
1178 int value)
1179 {
1180 struct iwreq iwr;
1181 int *i, ret = 0;
1182
1183 os_memset(&iwr, 0, sizeof(iwr));
1184 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1185 i = (int *) iwr.u.name;
1186 *i++ = param;
1187 *i++ = value;
1188
1189 if (ioctl(drv->sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) {
1190 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]");
1191 ret = -1;
1192 }
1193 return ret;
1194 }
1195
1196
1197 static int wpa_driver_hostap_set_wpa(void *priv, int enabled)
1198 {
1199 struct wpa_driver_hostap_data *drv = priv;
1200 int ret = 0;
1201
1202 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1203
1204 if (!enabled && wpa_driver_hostap_set_wpa_ie(drv, NULL, 0) < 0)
1205 ret = -1;
1206 if (prism2param(drv, PRISM2_PARAM_HOST_ROAMING, enabled ? 2 : 0) < 0)
1207 ret = -1;
1208 if (prism2param(drv, PRISM2_PARAM_WPA, enabled) < 0)
1209 ret = -1;
1210
1211 return ret;
1212 }
1213
1214
1215 static void show_set_key_error(struct prism2_hostapd_param *param)
1216 {
1217 switch (param->u.crypt.err) {
1218 case HOSTAP_CRYPT_ERR_UNKNOWN_ALG:
1219 wpa_printf(MSG_INFO, "Unknown algorithm '%s'.",
1220 param->u.crypt.alg);
1221 wpa_printf(MSG_INFO, "You may need to load kernel module to "
1222 "register that algorithm.");
1223 wpa_printf(MSG_INFO, "E.g., 'modprobe hostap_crypt_wep' for "
1224 "WEP.");
1225 break;
1226 case HOSTAP_CRYPT_ERR_UNKNOWN_ADDR:
1227 wpa_printf(MSG_INFO, "Unknown address " MACSTR ".",
1228 MAC2STR(param->sta_addr));
1229 break;
1230 case HOSTAP_CRYPT_ERR_CRYPT_INIT_FAILED:
1231 wpa_printf(MSG_INFO, "Crypt algorithm initialization failed.");
1232 break;
1233 case HOSTAP_CRYPT_ERR_KEY_SET_FAILED:
1234 wpa_printf(MSG_INFO, "Key setting failed.");
1235 break;
1236 case HOSTAP_CRYPT_ERR_TX_KEY_SET_FAILED:
1237 wpa_printf(MSG_INFO, "TX key index setting failed.");
1238 break;
1239 case HOSTAP_CRYPT_ERR_CARD_CONF_FAILED:
1240 wpa_printf(MSG_INFO, "Card configuration failed.");
1241 break;
1242 }
1243 }
1244
1245
1246 static int wpa_driver_hostap_set_key(const char *ifname, void *priv,
1247 enum wpa_alg alg, const u8 *addr,
1248 int key_idx, int set_tx,
1249 const u8 *seq, size_t seq_len,
1250 const u8 *key, size_t key_len)
1251 {
1252 struct wpa_driver_hostap_data *drv = priv;
1253 struct prism2_hostapd_param *param;
1254 u8 *buf;
1255 size_t blen;
1256 int ret = 0;
1257 char *alg_name;
1258
1259 switch (alg) {
1260 case WPA_ALG_NONE:
1261 alg_name = "none";
1262 break;
1263 case WPA_ALG_WEP:
1264 alg_name = "WEP";
1265 break;
1266 case WPA_ALG_TKIP:
1267 alg_name = "TKIP";
1268 break;
1269 case WPA_ALG_CCMP:
1270 alg_name = "CCMP";
1271 break;
1272 default:
1273 return -1;
1274 }
1275
1276 wpa_printf(MSG_DEBUG, "%s: alg=%s key_idx=%d set_tx=%d seq_len=%lu "
1277 "key_len=%lu", __FUNCTION__, alg_name, key_idx, set_tx,
1278 (unsigned long) seq_len, (unsigned long) key_len);
1279
1280 if (seq_len > 8)
1281 return -2;
1282
1283 blen = sizeof(*param) + key_len;
1284 buf = os_zalloc(blen);
1285 if (buf == NULL)
1286 return -1;
1287
1288 param = (struct prism2_hostapd_param *) buf;
1289 param->cmd = PRISM2_SET_ENCRYPTION;
1290 /* TODO: In theory, STA in client mode can use five keys; four default
1291 * keys for receiving (with keyidx 0..3) and one individual key for
1292 * both transmitting and receiving (keyidx 0) _unicast_ packets. Now,
1293 * keyidx 0 is reserved for this unicast use and default keys can only
1294 * use keyidx 1..3 (i.e., default key with keyidx 0 is not supported).
1295 * This should be fine for more or less all cases, but for completeness
1296 * sake, the driver could be enhanced to support the missing key. */
1297 #if 0
1298 if (addr == NULL)
1299 os_memset(param->sta_addr, 0xff, ETH_ALEN);
1300 else
1301 os_memcpy(param->sta_addr, addr, ETH_ALEN);
1302 #else
1303 os_memset(param->sta_addr, 0xff, ETH_ALEN);
1304 #endif
1305 os_strlcpy((char *) param->u.crypt.alg, alg_name,
1306 HOSTAP_CRYPT_ALG_NAME_LEN);
1307 param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0;
1308 param->u.crypt.idx = key_idx;
1309 os_memcpy(param->u.crypt.seq, seq, seq_len);
1310 param->u.crypt.key_len = key_len;
1311 os_memcpy((u8 *) (param + 1), key, key_len);
1312
1313 if (hostapd_ioctl(drv, param, blen, 1)) {
1314 wpa_printf(MSG_WARNING, "Failed to set encryption.");
1315 show_set_key_error(param);
1316 ret = -1;
1317 }
1318 os_free(buf);
1319
1320 return ret;
1321 }
1322
1323
1324 static int wpa_driver_hostap_set_countermeasures(void *priv, int enabled)
1325 {
1326 struct wpa_driver_hostap_data *drv = priv;
1327 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
1328 return prism2param(drv, PRISM2_PARAM_TKIP_COUNTERMEASURES, enabled);
1329 }
1330
1331
1332 static int wpa_driver_hostap_reset(struct wpa_driver_hostap_data *drv,
1333 int type)
1334 {
1335 struct iwreq iwr;
1336 int *i, ret = 0;
1337
1338 wpa_printf(MSG_DEBUG, "%s: type=%d", __FUNCTION__, type);
1339
1340 os_memset(&iwr, 0, sizeof(iwr));
1341 os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
1342 i = (int *) iwr.u.name;
1343 *i++ = type;
1344
1345 if (ioctl(drv->sock, PRISM2_IOCTL_RESET, &iwr) < 0) {
1346 perror("ioctl[PRISM2_IOCTL_RESET]");
1347 ret = -1;
1348 }
1349 return ret;
1350 }
1351
1352
1353 static int wpa_driver_hostap_mlme(struct wpa_driver_hostap_data *drv,
1354 const u8 *addr, int cmd, int reason_code)
1355 {
1356 struct prism2_hostapd_param param;
1357 int ret;
1358
1359 /* There does not seem to be a better way of deauthenticating or
1360 * disassociating with Prism2/2.5/3 than sending the management frame
1361 * and then resetting the Port0 to make sure both the AP and the STA
1362 * end up in disconnected state. */
1363 os_memset(&param, 0, sizeof(param));
1364 param.cmd = PRISM2_HOSTAPD_MLME;
1365 os_memcpy(param.sta_addr, addr, ETH_ALEN);
1366 param.u.mlme.cmd = cmd;
1367 param.u.mlme.reason_code = reason_code;
1368 ret = hostapd_ioctl(drv, &param, sizeof(param), 1);
1369 if (ret == 0) {
1370 os_sleep(0, 100000);
1371 ret = wpa_driver_hostap_reset(drv, 2);
1372 }
1373 return ret;
1374 }
1375
1376
1377 static int wpa_driver_hostap_deauthenticate(void *priv, const u8 *addr,
1378 int reason_code)
1379 {
1380 struct wpa_driver_hostap_data *drv = priv;
1381 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1382 return wpa_driver_hostap_mlme(drv, addr, MLME_STA_DEAUTH,
1383 reason_code);
1384 }
1385
1386
1387 static int wpa_driver_hostap_disassociate(void *priv, const u8 *addr,
1388 int reason_code)
1389 {
1390 struct wpa_driver_hostap_data *drv = priv;
1391 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1392 return wpa_driver_hostap_mlme(drv, addr, MLME_STA_DISASSOC,
1393 reason_code);
1394 }
1395
1396
1397 static int
1398 wpa_driver_hostap_associate(void *priv,
1399 struct wpa_driver_associate_params *params)
1400 {
1401 struct wpa_driver_hostap_data *drv = priv;
1402 int ret = 0;
1403 int allow_unencrypted_eapol;
1404
1405 wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
1406
1407 if (prism2param(drv, PRISM2_PARAM_DROP_UNENCRYPTED,
1408 params->drop_unencrypted) < 0)
1409 ret = -1;
1410 if (wpa_driver_hostap_set_auth_alg(drv, params->auth_alg) < 0)
1411 ret = -1;
1412 if (params->mode != drv->current_mode) {
1413 /* At the moment, Host AP driver requires host_roaming=2 for
1414 * infrastructure mode and host_roaming=0 for adhoc. */
1415 if (prism2param(drv, PRISM2_PARAM_HOST_ROAMING,
1416 params->mode == IEEE80211_MODE_IBSS ? 0 : 2) <
1417 0) {
1418 wpa_printf(MSG_DEBUG, "%s: failed to set host_roaming",
1419 __func__);
1420 }
1421 drv->current_mode = params->mode;
1422 }
1423
1424 if (prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED,
1425 params->key_mgmt_suite != KEY_MGMT_NONE) < 0)
1426 ret = -1;
1427 if (wpa_driver_hostap_set_wpa_ie(drv, params->wpa_ie,
1428 params->wpa_ie_len) < 0)
1429 ret = -1;
1430 if (wpa_driver_wext_set_mode(drv->wext, params->mode) < 0)
1431 ret = -1;
1432 if (params->freq &&
1433 wpa_driver_wext_set_freq(drv->wext, params->freq) < 0)
1434 ret = -1;
1435 if (wpa_driver_wext_set_ssid(drv->wext, params->ssid, params->ssid_len)
1436 < 0)
1437 ret = -1;
1438 if (wpa_driver_wext_set_bssid(drv->wext, params->bssid) < 0)
1439 ret = -1;
1440
1441 /* Allow unencrypted EAPOL messages even if pairwise keys are set when
1442 * not using WPA. IEEE 802.1X specifies that these frames are not
1443 * encrypted, but WPA encrypts them when pairwise keys are in use. */
1444 if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
1445 params->key_mgmt_suite == KEY_MGMT_PSK)
1446 allow_unencrypted_eapol = 0;
1447 else
1448 allow_unencrypted_eapol = 1;
1449
1450 if (prism2param(drv, PRISM2_PARAM_IEEE_802_1X,
1451 allow_unencrypted_eapol) < 0) {
1452 wpa_printf(MSG_DEBUG, "hostap: Failed to configure "
1453 "ieee_802_1x param");
1454 /* Ignore this error.. driver_hostap.c can also be used with
1455 * other drivers that do not support this prism2_param. */
1456 }
1457
1458 return ret;
1459 }
1460
1461
1462 static int wpa_driver_hostap_scan(void *priv,
1463 struct wpa_driver_scan_params *params)
1464 {
1465 struct wpa_driver_hostap_data *drv = priv;
1466 struct prism2_hostapd_param param;
1467 int ret;
1468 const u8 *ssid = params->ssids[0].ssid;
1469 size_t ssid_len = params->ssids[0].ssid_len;
1470
1471 if (ssid == NULL) {
1472 /* Use standard Linux Wireless Extensions ioctl if possible
1473 * because some drivers using hostap code in wpa_supplicant
1474 * might not support Host AP specific scan request (with SSID
1475 * info). */
1476 return wpa_driver_wext_scan(drv->wext, params);
1477 }
1478
1479 if (ssid_len > 32)
1480 ssid_len = 32;
1481
1482 os_memset(&param, 0, sizeof(param));
1483 param.cmd = PRISM2_HOSTAPD_SCAN_REQ;
1484 param.u.scan_req.ssid_len = ssid_len;
1485 os_memcpy(param.u.scan_req.ssid, ssid, ssid_len);
1486 ret = hostapd_ioctl(drv, &param, sizeof(param), 1);
1487
1488 /* Not all drivers generate "scan completed" wireless event, so try to
1489 * read results after a timeout. */
1490 eloop_cancel_timeout(wpa_driver_wext_scan_timeout, drv->wext,
1491 drv->ctx);
1492 eloop_register_timeout(3, 0, wpa_driver_wext_scan_timeout, drv->wext,
1493 drv->ctx);
1494
1495 return ret;
1496 }
1497
1498
1499 static int wpa_driver_hostap_set_auth_alg(void *priv, int auth_alg)
1500 {
1501 struct wpa_driver_hostap_data *drv = priv;
1502 int algs = 0;
1503
1504 if (auth_alg & WPA_AUTH_ALG_OPEN)
1505 algs |= 1;
1506 if (auth_alg & WPA_AUTH_ALG_SHARED)
1507 algs |= 2;
1508 if (auth_alg & WPA_AUTH_ALG_LEAP)
1509 algs |= 4;
1510 if (algs == 0)
1511 algs = 1; /* at least one algorithm should be set */
1512
1513 return prism2param(drv, PRISM2_PARAM_AP_AUTH_ALGS, algs);
1514 }
1515
1516
1517 static int wpa_driver_hostap_get_bssid(void *priv, u8 *bssid)
1518 {
1519 struct wpa_driver_hostap_data *drv = priv;
1520 return wpa_driver_wext_get_bssid(drv->wext, bssid);
1521 }
1522
1523
1524 static int wpa_driver_hostap_get_ssid(void *priv, u8 *ssid)
1525 {
1526 struct wpa_driver_hostap_data *drv = priv;
1527 return wpa_driver_wext_get_ssid(drv->wext, ssid);
1528 }
1529
1530
1531 static struct wpa_scan_results * wpa_driver_hostap_get_scan_results(void *priv)
1532 {
1533 struct wpa_driver_hostap_data *drv = priv;
1534 return wpa_driver_wext_get_scan_results(drv->wext);
1535 }
1536
1537
1538 static int wpa_driver_hostap_set_operstate(void *priv, int state)
1539 {
1540 struct wpa_driver_hostap_data *drv = priv;
1541 return wpa_driver_wext_set_operstate(drv->wext, state);
1542 }
1543
1544
1545 static void * wpa_driver_hostap_init(void *ctx, const char *ifname)
1546 {
1547 struct wpa_driver_hostap_data *drv;
1548
1549 drv = os_zalloc(sizeof(*drv));
1550 if (drv == NULL)
1551 return NULL;
1552 drv->wext = wpa_driver_wext_init(ctx, ifname);
1553 if (drv->wext == NULL) {
1554 os_free(drv);
1555 return NULL;
1556 }
1557
1558 drv->ctx = ctx;
1559 os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1560 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
1561 if (drv->sock < 0) {
1562 perror("socket");
1563 wpa_driver_wext_deinit(drv->wext);
1564 os_free(drv);
1565 return NULL;
1566 }
1567
1568 if (os_strncmp(ifname, "wlan", 4) == 0) {
1569 /*
1570 * Host AP driver may use both wlan# and wifi# interface in
1571 * wireless events.
1572 */
1573 char ifname2[IFNAMSIZ + 1];
1574 os_strlcpy(ifname2, ifname, sizeof(ifname2));
1575 os_memcpy(ifname2, "wifi", 4);
1576 wpa_driver_wext_alternative_ifindex(drv->wext, ifname2);
1577 }
1578
1579 wpa_driver_hostap_set_wpa(drv, 1);
1580
1581 return drv;
1582 }
1583
1584
1585 static void wpa_driver_hostap_deinit(void *priv)
1586 {
1587 struct wpa_driver_hostap_data *drv = priv;
1588 wpa_driver_hostap_set_wpa(drv, 0);
1589 wpa_driver_wext_deinit(drv->wext);
1590 close(drv->sock);
1591 os_free(drv);
1592 }
1593
1594 #endif /* HOSTAPD */
1595
1596
1597 const struct wpa_driver_ops wpa_driver_hostap_ops = {
1598 .name = "hostap",
1599 .desc = "Host AP driver (Intersil Prism2/2.5/3)",
1600 .set_key = wpa_driver_hostap_set_key,
1601 #ifdef HOSTAPD
1602 .hapd_init = hostap_init,
1603 .hapd_deinit = hostap_driver_deinit,
1604 .set_ieee8021x = hostap_set_ieee8021x,
1605 .set_privacy = hostap_set_privacy,
1606 .get_seqnum = hostap_get_seqnum,
1607 .flush = hostap_flush,
1608 .set_generic_elem = hostap_set_generic_elem,
1609 .read_sta_data = hostap_read_sta_data,
1610 .hapd_send_eapol = hostap_send_eapol,
1611 .sta_set_flags = hostap_sta_set_flags,
1612 .sta_deauth = hostap_sta_deauth,
1613 .sta_disassoc = hostap_sta_disassoc,
1614 .sta_remove = hostap_sta_remove,
1615 .hapd_set_ssid = hostap_set_ssid,
1616 .send_mlme = hostap_send_mlme,
1617 .sta_add = hostap_sta_add,
1618 .get_inact_sec = hostap_get_inact_sec,
1619 .sta_clear_stats = hostap_sta_clear_stats,
1620 .get_hw_feature_data = hostap_get_hw_feature_data,
1621 .set_ap_wps_ie = hostap_set_ap_wps_ie,
1622 #else /* HOSTAPD */
1623 .get_bssid = wpa_driver_hostap_get_bssid,
1624 .get_ssid = wpa_driver_hostap_get_ssid,
1625 .set_countermeasures = wpa_driver_hostap_set_countermeasures,
1626 .scan2 = wpa_driver_hostap_scan,
1627 .get_scan_results2 = wpa_driver_hostap_get_scan_results,
1628 .deauthenticate = wpa_driver_hostap_deauthenticate,
1629 .disassociate = wpa_driver_hostap_disassociate,
1630 .associate = wpa_driver_hostap_associate,
1631 .init = wpa_driver_hostap_init,
1632 .deinit = wpa_driver_hostap_deinit,
1633 .set_operstate = wpa_driver_hostap_set_operstate,
1634 #endif /* HOSTAPD */
1635 };
Mirror of AROS' svn.