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/errno.h>
48 #include <sys/sysctl.h>
49 #include <sys/fcntl.h>
51 #include <net/if_dl.h>
52 #include <net/if_var.h>
54 #include <netinet/in.h>
55 #include <arpa/inet.h>
57 #include <net/route.h>
59 #include <net80211/ieee80211_ioctl.h>
69 #define OID_802_11_ADD_KEY 0x0d01011D
71 typedef ULONGLONG NDIS_802_11_KEY_RSC;
72 typedef UCHAR NDIS_802_11_MAC_ADDRESS[6];
74 typedef struct NDIS_802_11_KEY {
78 NDIS_802_11_MAC_ADDRESS BSSID;
79 NDIS_802_11_KEY_RSC KeyRSC;
83 typedef struct NDIS_802_11_KEY_COMPAT {
87 NDIS_802_11_MAC_ADDRESS BSSID;
88 UCHAR Pad[6]; /* Make struct layout match Windows. */
89 NDIS_802_11_KEY_RSC KeyRSC;
93 } NDIS_802_11_KEY_COMPAT;
105 PacketGetVersion(void)
107 return("FreeBSD WinPcap compatibility shim v1.0");
111 PacketOpenAdapter(CHAR *iface)
117 struct ieee80211req ireq;
119 s = socket(PF_INET, SOCK_DGRAM, 0);
124 a = malloc(sizeof(struct adapter));
129 if (strncmp(iface, "\\Device\\NPF_", 12) == 0)
131 else if (strncmp(iface, "\\DEVICE\\", 8) == 0)
133 snprintf(a->name, IFNAMSIZ, "%s", iface);
135 /* Turn off net80211 roaming */
136 bzero((char *)&ireq, sizeof(ireq));
137 strncpy(ireq.i_name, iface, sizeof (ifr.ifr_name));
138 ireq.i_type = IEEE80211_IOC_ROAMING;
139 if (ioctl(a->socket, SIOCG80211, &ireq) == 0) {
140 a->prev_roaming = ireq.i_val;
141 ireq.i_val = IEEE80211_ROAMING_MANUAL;
142 if (ioctl(a->socket, SIOCS80211, &ireq) < 0)
144 "Could not set IEEE80211_ROAMING_MANUAL\n");
147 bzero((char *)&ifr, sizeof(ifr));
148 strncpy(ifr.ifr_name, iface, sizeof (ifr.ifr_name));
149 if (ioctl(a->socket, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
154 ifr.ifr_flags |= IFF_UP;
155 if (ioctl(a->socket, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
165 PacketRequest(void *iface, BOOLEAN set, PACKET_OID_DATA *oid)
170 NDIS_802_11_KEY *old;
171 NDIS_802_11_KEY_COMPAT *new;
172 PACKET_OID_DATA *o = NULL;
178 bzero((char *)&ifr, sizeof(ifr));
181 * This hack is necessary to work around a difference
182 * betwee the GNU C and Microsoft C compilers. The NDIS_802_11_KEY
183 * structure has a uint64_t in it, right after an array of
184 * chars. The Microsoft compiler inserts padding right before
185 * the 64-bit value to align it on a 64-bit boundary, but
186 * GCC only aligns it on a 32-bit boundary. Trying to pass
187 * the GCC-formatted structure to an NDIS binary driver
188 * fails because some of the fields appear to be at the
191 * To get around this, if we detect someone is trying to do
192 * a set operation on OID_802_11_ADD_KEY, we shuffle the data
193 * into a properly padded structure and pass that into the
194 * driver instead. This allows the driver_ndis.c code supplied
195 * with wpa_supplicant to work unmodified.
198 if (set == TRUE && oid->Oid == OID_802_11_ADD_KEY) {
199 old = (NDIS_802_11_KEY *)&oid->Data;
200 o = malloc(sizeof(PACKET_OID_DATA) +
201 sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength);
204 bzero((char *)o, sizeof(PACKET_OID_DATA) +
205 sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength);
207 o->Length = sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength;
208 new = (NDIS_802_11_KEY_COMPAT *)&o->Data;
209 new->KeyRSC = old->KeyRSC;
210 new->Length = o->Length;
211 new->KeyIndex = old->KeyIndex;
212 new->KeyLength = old->KeyLength;
213 bcopy(old->BSSID, new->BSSID, sizeof(NDIS_802_11_MAC_ADDRESS));
214 bcopy(old->KeyMaterial, (char *)new +
215 sizeof(NDIS_802_11_KEY_COMPAT), new->KeyLength);
216 ifr.ifr_data = (caddr_t)o;
218 ifr.ifr_data = (caddr_t)oid;
220 strlcpy(ifr.ifr_name, a->name, sizeof(ifr.ifr_name));
223 retval = ioctl(a->socket, SIOCSDRVSPEC, &ifr);
225 retval = ioctl(a->socket, SIOCGDRVSPEC, &ifr);
237 PacketGetAdapterNames(CHAR *namelist, ULONG *len)
241 struct if_msghdr *ifm;
242 struct sockaddr_dl *sdl;
243 char *buf, *lim, *next;
256 mib[2] = 0; /* protocol */
257 mib[3] = 0; /* wildcard address family */
258 mib[4] = NET_RT_IFLIST;
259 mib[5] = 0; /* no flags */
261 if (sysctl (mib, 6, NULL, &needed, NULL, 0) < 0)
264 buf = malloc (needed);
268 if (sysctl (mib, 6, buf, &needed, NULL, 0) < 0) {
275 /* Generate interface name list. */
279 ifm = (struct if_msghdr *)next;
280 if (ifm->ifm_type == RTM_IFINFO) {
281 sdl = (struct sockaddr_dl *)(ifm + 1);
282 if (strnstr(sdl->sdl_data, "wlan", sdl->sdl_nlen)) {
283 if ((spc + sdl->sdl_nlen) > *len) {
287 strncpy(plist, sdl->sdl_data, sdl->sdl_nlen);
288 plist += (sdl->sdl_nlen + 1);
289 spc += (sdl->sdl_nlen + 1);
293 next += ifm->ifm_msglen;
297 /* Insert an extra "" as a spacer */
303 * Now generate the interface description list. There
304 * must be a unique description for each interface, and
305 * they have to match what the ndis_events program will
306 * feed in later. To keep this simple, we just repeat
307 * the interface list over again.
312 ifm = (struct if_msghdr *)next;
313 if (ifm->ifm_type == RTM_IFINFO) {
314 sdl = (struct sockaddr_dl *)(ifm + 1);
315 if (strnstr(sdl->sdl_data, "wlan", sdl->sdl_nlen)) {
316 if ((spc + sdl->sdl_nlen) > *len) {
320 strncpy(plist, sdl->sdl_data, sdl->sdl_nlen);
321 plist += (sdl->sdl_nlen + 1);
322 spc += (sdl->sdl_nlen + 1);
326 next += ifm->ifm_msglen;
337 PacketCloseAdapter(void *iface)
341 struct ieee80211req ireq;
348 /* Reset net80211 roaming */
349 bzero((char *)&ireq, sizeof(ireq));
350 strncpy(ireq.i_name, a->name, sizeof (ifr.ifr_name));
351 ireq.i_type = IEEE80211_IOC_ROAMING;
352 ireq.i_val = a->prev_roaming;
353 ioctl(a->socket, SIOCS80211, &ireq);
355 bzero((char *)&ifr, sizeof(ifr));
356 strncpy(ifr.ifr_name, a->name, sizeof (ifr.ifr_name));
357 ioctl(a->socket, SIOCGIFFLAGS, (caddr_t)&ifr);
358 ifr.ifr_flags &= ~IFF_UP;
359 ioctl(a->socket, SIOCSIFFLAGS, (caddr_t)&ifr);
366 #if __FreeBSD_version < 600000
369 * The version of libpcap in FreeBSD 5.2.1 doesn't have these routines.
370 * Call me insane if you will, but I still run 5.2.1 on my laptop, and
371 * I'd like to use WPA there.
375 pcap_get_selectable_fd(pcap_t *p)
377 return(pcap_fileno(p));
381 * The old version of libpcap opens its BPF descriptor in read-only
382 * mode. We need to temporarily create a new one we can write to.
386 pcap_inject(pcap_t *p, const void *buf, size_t len)
390 char device[sizeof "/dev/bpf0000000000"];
394 * Go through all the minors and find one that isn't in use.
397 (void)snprintf(device, sizeof(device), "/dev/bpf%d", n++);
398 fd = open(device, O_RDWR);
399 } while (fd < 0 && errno == EBUSY);
404 bzero((char *)&ifr, sizeof(ifr));
405 ioctl(pcap_fileno(p), BIOCGETIF, (caddr_t)&ifr);
406 ioctl(fd, BIOCSETIF, (caddr_t)&ifr);
408 res = write(fd, buf, len);