3 * Bill Paul <wpaul@windriver.com>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
37 * This file implements a small portion of the Winpcap API for the
38 * Windows NDIS interface in wpa_supplicant. It provides just enough
39 * routines to fool wpa_supplicant into thinking it's really running
40 * in a Windows environment.
43 #include <sys/types.h>
44 #include <sys/param.h>
45 #include <sys/socket.h>
46 #include <sys/ioctl.h>
47 #include <sys/socket.h>
48 #include <sys/errno.h>
49 #include <sys/sysctl.h>
50 #include <sys/fcntl.h>
52 #include <net/if_dl.h>
53 #include <net/if_var.h>
55 #include <netinet/in.h>
56 #include <arpa/inet.h>
58 #include <net/route.h>
60 #include <net80211/ieee80211_ioctl.h>
70 #define OID_802_11_ADD_KEY 0x0d01011D
72 typedef ULONGLONG NDIS_802_11_KEY_RSC;
73 typedef UCHAR NDIS_802_11_MAC_ADDRESS[6];
75 typedef struct NDIS_802_11_KEY {
79 NDIS_802_11_MAC_ADDRESS BSSID;
80 NDIS_802_11_KEY_RSC KeyRSC;
84 typedef struct NDIS_802_11_KEY_COMPAT {
88 NDIS_802_11_MAC_ADDRESS BSSID;
89 UCHAR Pad[6]; /* Make struct layout match Windows. */
90 NDIS_802_11_KEY_RSC KeyRSC;
94 } NDIS_802_11_KEY_COMPAT;
106 PacketGetVersion(void)
108 return("FreeBSD WinPcap compatibility shim v1.0");
112 PacketOpenAdapter(iface)
119 struct ieee80211req ireq;
121 s = socket(PF_INET, SOCK_DGRAM, 0);
126 a = malloc(sizeof(struct adapter));
131 if (strncmp(iface, "\\Device\\NPF_", 12) == 0)
133 else if (strncmp(iface, "\\DEVICE\\", 8) == 0)
135 snprintf(a->name, IFNAMSIZ, "%s", iface);
137 /* Turn off net80211 roaming */
138 bzero((char *)&ireq, sizeof(ireq));
139 strncpy(ireq.i_name, iface, sizeof (ifr.ifr_name));
140 ireq.i_type = IEEE80211_IOC_ROAMING;
141 if (ioctl(a->socket, SIOCG80211, &ireq) == 0) {
142 a->prev_roaming = ireq.i_val;
143 ireq.i_val = IEEE80211_ROAMING_MANUAL;
144 if (ioctl(a->socket, SIOCS80211, &ireq) < 0)
146 "Could not set IEEE80211_ROAMING_MANUAL\n");
149 bzero((char *)&ifr, sizeof(ifr));
150 strncpy(ifr.ifr_name, iface, sizeof (ifr.ifr_name));
151 if (ioctl(a->socket, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
156 ifr.ifr_flags |= IFF_UP;
157 if (ioctl(a->socket, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
167 PacketRequest(iface, set, oid)
170 PACKET_OID_DATA *oid;
175 NDIS_802_11_KEY *old;
176 NDIS_802_11_KEY_COMPAT *new;
177 PACKET_OID_DATA *o = NULL;
183 bzero((char *)&ifr, sizeof(ifr));
186 * This hack is necessary to work around a difference
187 * betwee the GNU C and Microsoft C compilers. The NDIS_802_11_KEY
188 * structure has a uint64_t in it, right after an array of
189 * chars. The Microsoft compiler inserts padding right before
190 * the 64-bit value to align it on a 64-bit boundary, but
191 * GCC only aligns it on a 32-bit boundary. Trying to pass
192 * the GCC-formatted structure to an NDIS binary driver
193 * fails because some of the fields appear to be at the
196 * To get around this, if we detect someone is trying to do
197 * a set operation on OID_802_11_ADD_KEY, we shuffle the data
198 * into a properly padded structure and pass that into the
199 * driver instead. This allows the driver_ndis.c code supplied
200 * with wpa_supplicant to work unmodified.
203 if (set == TRUE && oid->Oid == OID_802_11_ADD_KEY) {
204 old = (NDIS_802_11_KEY *)&oid->Data;
205 o = malloc(sizeof(PACKET_OID_DATA) +
206 sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength);
209 bzero((char *)o, sizeof(PACKET_OID_DATA) +
210 sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength);
212 o->Length = sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength;
213 new = (NDIS_802_11_KEY_COMPAT *)&o->Data;
214 new->KeyRSC = old->KeyRSC;
215 new->Length = o->Length;
216 new->KeyIndex = old->KeyIndex;
217 new->KeyLength = old->KeyLength;
218 bcopy(old->BSSID, new->BSSID, sizeof(NDIS_802_11_MAC_ADDRESS));
219 bcopy(old->KeyMaterial, (char *)new +
220 sizeof(NDIS_802_11_KEY_COMPAT), new->KeyLength);
221 ifr.ifr_data = (caddr_t)o;
223 ifr.ifr_data = (caddr_t)oid;
225 strlcpy(ifr.ifr_name, a->name, sizeof(ifr.ifr_name));
228 retval = ioctl(a->socket, SIOCSDRVSPEC, &ifr);
230 retval = ioctl(a->socket, SIOCGDRVSPEC, &ifr);
242 PacketGetAdapterNames(namelist, len)
248 struct if_msghdr *ifm;
249 struct sockaddr_dl *sdl;
250 char *buf, *lim, *next;
263 mib[2] = 0; /* protocol */
264 mib[3] = 0; /* wildcard address family */
265 mib[4] = NET_RT_IFLIST;
266 mib[5] = 0; /* no flags */
268 if (sysctl (mib, 6, NULL, &needed, NULL, 0) < 0)
271 buf = malloc (needed);
275 if (sysctl (mib, 6, buf, &needed, NULL, 0) < 0) {
282 /* Generate interface name list. */
286 ifm = (struct if_msghdr *)next;
287 if (ifm->ifm_type == RTM_IFINFO) {
288 sdl = (struct sockaddr_dl *)(ifm + 1);
289 if (strnstr(sdl->sdl_data, "ndis", sdl->sdl_nlen)) {
290 if ((spc + sdl->sdl_nlen) > *len) {
294 strncpy(plist, sdl->sdl_data, sdl->sdl_nlen);
295 plist += (sdl->sdl_nlen + 1);
296 spc += (sdl->sdl_nlen + 1);
300 next += ifm->ifm_msglen;
304 /* Insert an extra "" as a spacer */
310 * Now generate the interface description list. There
311 * must be a unique description for each interface, and
312 * they have to match what the ndis_events program will
313 * feed in later. To keep this simple, we just repeat
314 * the interface list over again.
319 ifm = (struct if_msghdr *)next;
320 if (ifm->ifm_type == RTM_IFINFO) {
321 sdl = (struct sockaddr_dl *)(ifm + 1);
322 if (strnstr(sdl->sdl_data, "ndis", sdl->sdl_nlen)) {
323 if ((spc + sdl->sdl_nlen) > *len) {
327 strncpy(plist, sdl->sdl_data, sdl->sdl_nlen);
328 plist += (sdl->sdl_nlen + 1);
329 spc += (sdl->sdl_nlen + 1);
333 next += ifm->ifm_msglen;
344 PacketCloseAdapter(iface)
349 struct ieee80211req ireq;
356 /* Reset net80211 roaming */
357 bzero((char *)&ireq, sizeof(ireq));
358 strncpy(ireq.i_name, a->name, sizeof (ifr.ifr_name));
359 ireq.i_type = IEEE80211_IOC_ROAMING;
360 ireq.i_val = a->prev_roaming;
361 ioctl(a->socket, SIOCS80211, &ireq);
363 bzero((char *)&ifr, sizeof(ifr));
364 strncpy(ifr.ifr_name, a->name, sizeof (ifr.ifr_name));
365 ioctl(a->socket, SIOCGIFFLAGS, (caddr_t)&ifr);
366 ifr.ifr_flags &= ~IFF_UP;
367 ioctl(a->socket, SIOCSIFFLAGS, (caddr_t)&ifr);
374 #if __FreeBSD_version < 600000
377 * The version of libpcap in FreeBSD 5.2.1 doesn't have these routines.
378 * Call me insane if you will, but I still run 5.2.1 on my laptop, and
379 * I'd like to use WPA there.
383 pcap_get_selectable_fd(pcap_t *p)
385 return(pcap_fileno(p));
389 * The old version of libpcap opens its BPF descriptor in read-only
390 * mode. We need to temporarily create a new one we can write to.
394 pcap_inject(pcap_t *p, const void *buf, size_t len)
398 char device[sizeof "/dev/bpf0000000000"];
402 * Go through all the minors and find one that isn't in use.
405 (void)snprintf(device, sizeof(device), "/dev/bpf%d", n++);
406 fd = open(device, O_RDWR);
407 } while (fd < 0 && errno == EBUSY);
412 bzero((char *)&ifr, sizeof(ifr));
413 ioctl(pcap_fileno(p), BIOCGETIF, (caddr_t)&ifr);
414 ioctl(fd, BIOCSETIF, (caddr_t)&ifr);
416 res = write(fd, buf, len);