[dragonfly.git] / usr.sbin / 802_11 / wpa_supplicant / Packet32.c

/*-
 * Copyright (c) 2005
 *      Bill Paul <wpaul@windriver.com>.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Bill Paul.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD: head/usr.sbin/wpa/wpa_supplicant/Packet32.c 189220 2009-03-01 08:01:38Z sam $
 */


/*
 * This file implements a small portion of the Winpcap API for the
 * Windows NDIS interface in wpa_supplicant. It provides just enough
 * routines to fool wpa_supplicant into thinking it's really running
 * in a Windows environment.
 */

#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/sysctl.h>
#include <sys/fcntl.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_var.h>

#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <net/bpf.h>
#include <net/route.h>

#include <netproto/802_11/ieee80211_ioctl.h>

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <pcap.h>

#include "Packet32.h"

#define OID_802_11_ADD_KEY      0x0d01011D

typedef ULONGLONG NDIS_802_11_KEY_RSC;
typedef UCHAR NDIS_802_11_MAC_ADDRESS[6];

typedef struct NDIS_802_11_KEY {
	ULONG Length;
	ULONG KeyIndex;
	ULONG KeyLength;
	NDIS_802_11_MAC_ADDRESS BSSID;
	NDIS_802_11_KEY_RSC KeyRSC;
	UCHAR KeyMaterial[1];
} NDIS_802_11_KEY;

typedef struct NDIS_802_11_KEY_COMPAT {
	ULONG Length;
	ULONG KeyIndex;
	ULONG KeyLength;
	NDIS_802_11_MAC_ADDRESS BSSID;
	UCHAR Pad[6]; /* Make struct layout match Windows. */
	NDIS_802_11_KEY_RSC KeyRSC;
#ifdef notdef
	UCHAR KeyMaterial[1];
#endif
} NDIS_802_11_KEY_COMPAT;

#define TRUE 1
#define FALSE 0

struct adapter {
	int			socket;
	char			name[IFNAMSIZ];
	int			prev_roaming;
};

PCHAR
PacketGetVersion(void)
{
	return("FreeBSD WinPcap compatibility shim v1.0");
}

void *
PacketOpenAdapter(CHAR *iface)
{
	struct adapter		*a;
	int			s;
	int			ifflags;
	struct ifreq		ifr;
	struct ieee80211req	ireq;

	s = socket(PF_INET, SOCK_DGRAM, 0);

	if (s == -1)
		return(NULL);

	a = malloc(sizeof(struct adapter));
	if (a == NULL)
		return(NULL);

	a->socket = s;
	if (strncmp(iface, "\\Device\\NPF_", 12) == 0)
		iface += 12;
	else if (strncmp(iface, "\\DEVICE\\", 8) == 0)
		iface += 8;
	snprintf(a->name, IFNAMSIZ, "%s", iface);

	/* Turn off net80211 roaming */
	bzero((char *)&ireq, sizeof(ireq));
	strncpy(ireq.i_name, iface, sizeof (ifr.ifr_name));
	ireq.i_type = IEEE80211_IOC_ROAMING;
	if (ioctl(a->socket, SIOCG80211, &ireq) == 0) {
		a->prev_roaming = ireq.i_val;
		ireq.i_val = IEEE80211_ROAMING_MANUAL;
		if (ioctl(a->socket, SIOCS80211, &ireq) < 0)
			fprintf(stderr,
			    "Could not set IEEE80211_ROAMING_MANUAL\n");
	}

	bzero((char *)&ifr, sizeof(ifr));
        strncpy(ifr.ifr_name, iface, sizeof (ifr.ifr_name));
        if (ioctl(a->socket, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
		free(a);
		close(s);
		return(NULL);
        }
        ifr.ifr_flags |= IFF_UP;
        if (ioctl(a->socket, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
		free(a);
		close(s);
		return(NULL);
        }

	return(a);
}

int
PacketRequest(void *iface, BOOLEAN set, PACKET_OID_DATA *oid)
{
	struct adapter		*a;
	uint32_t		retval;
	struct ifreq		ifr;
	NDIS_802_11_KEY		*old;
	NDIS_802_11_KEY_COMPAT	*new;
	PACKET_OID_DATA		*o = NULL;

	if (iface == NULL)
		return(-1);

	a = iface;
	bzero((char *)&ifr, sizeof(ifr));

	/*
	 * This hack is necessary to work around a difference
	 * betwee the GNU C and Microsoft C compilers. The NDIS_802_11_KEY
	 * structure has a uint64_t in it, right after an array of
	 * chars. The Microsoft compiler inserts padding right before
	 * the 64-bit value to align it on a 64-bit boundary, but
	 * GCC only aligns it on a 32-bit boundary. Trying to pass
	 * the GCC-formatted structure to an NDIS binary driver
	 * fails because some of the fields appear to be at the
	 * wrong offsets.
	 *
	 * To get around this, if we detect someone is trying to do
	 * a set operation on OID_802_11_ADD_KEY, we shuffle the data
	 * into a properly padded structure and pass that into the
	 * driver instead. This allows the driver_ndis.c code supplied
	 * with wpa_supplicant to work unmodified.
	 */

	if (set == TRUE && oid->Oid == OID_802_11_ADD_KEY) {
		old = (NDIS_802_11_KEY *)&oid->Data;
		o = malloc(sizeof(PACKET_OID_DATA) +
		    sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength);
		if (o == NULL)
			return(0);
		bzero((char *)o, sizeof(PACKET_OID_DATA) +
		    sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength);
		o->Oid = oid->Oid;
		o->Length = sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength;
		new = (NDIS_802_11_KEY_COMPAT *)&o->Data;
		new->KeyRSC = old->KeyRSC;
		new->Length = o->Length;
		new->KeyIndex = old->KeyIndex;
		new->KeyLength = old->KeyLength;
		bcopy(old->BSSID, new->BSSID, sizeof(NDIS_802_11_MAC_ADDRESS));
		bcopy(old->KeyMaterial, (char *)new +
		    sizeof(NDIS_802_11_KEY_COMPAT), new->KeyLength);
        	ifr.ifr_data = (caddr_t)o;
	} else
        	ifr.ifr_data = (caddr_t)oid;

        strlcpy(ifr.ifr_name, a->name, sizeof(ifr.ifr_name));

	if (set == TRUE)
		retval = ioctl(a->socket, SIOCSDRVSPEC, &ifr);
	else
		retval = ioctl(a->socket, SIOCGDRVSPEC, &ifr);

	if (o != NULL)
		free(o);

	if (retval)
		return(0);

	return(1);
}

int
PacketGetAdapterNames(CHAR *namelist, ULONG *len)
{
	int			mib[6];
	size_t			needed;
	struct if_msghdr	*ifm;
	struct sockaddr_dl	*sdl;
	char			*buf, *lim, *next;
	char			*plist;
	int			spc;
	int			i, ifcnt = 0;

	plist = namelist;
	spc = 0;

	bzero(plist, *len);

	needed = 0;
	mib[0] = CTL_NET;
	mib[1] = PF_ROUTE;
	mib[2] = 0;             /* protocol */
	mib[3] = 0;             /* wildcard address family */
	mib[4] = NET_RT_IFLIST;
	mib[5] = 0;             /* no flags */

	if (sysctl (mib, 6, NULL, &needed, NULL, 0) < 0)
		return(FALSE);

	buf = malloc (needed);
	if (buf == NULL)
		return(FALSE);

	if (sysctl (mib, 6, buf, &needed, NULL, 0) < 0) {
		free(buf);
		return(FALSE);
	}

	lim = buf + needed;

	/* Generate interface name list. */

	next = buf;
	while (next < lim) {
		ifm = (struct if_msghdr *)next;
		if (ifm->ifm_type == RTM_IFINFO) {
			sdl = (struct sockaddr_dl *)(ifm + 1);
			if (strnstr(sdl->sdl_data, "wlan", sdl->sdl_nlen)) {
				if ((spc + sdl->sdl_nlen) > *len) {
					free(buf);
					return(FALSE);
				}
				strncpy(plist, sdl->sdl_data, sdl->sdl_nlen);
				plist += (sdl->sdl_nlen + 1);
				spc += (sdl->sdl_nlen + 1);
				ifcnt++;
			}
		}
		next += ifm->ifm_msglen;
	}


	/* Insert an extra "" as a spacer */

	plist++;
	spc++;

	/*
	 * Now generate the interface description list. There
	 * must be a unique description for each interface, and
	 * they have to match what the ndis_events program will
	 * feed in later. To keep this simple, we just repeat
	 * the interface list over again.
	 */

	next = buf;
	while (next < lim) {
		ifm = (struct if_msghdr *)next;
		if (ifm->ifm_type == RTM_IFINFO) {
			sdl = (struct sockaddr_dl *)(ifm + 1);
			if (strnstr(sdl->sdl_data, "wlan", sdl->sdl_nlen)) {
				if ((spc + sdl->sdl_nlen) > *len) {
					free(buf);
					return(FALSE);
				}
				strncpy(plist, sdl->sdl_data, sdl->sdl_nlen);
				plist += (sdl->sdl_nlen + 1);
				spc += (sdl->sdl_nlen + 1);
				ifcnt++;
			}
		}
		next += ifm->ifm_msglen;
	}

	free (buf);

	*len = spc + 1;

	return(TRUE);
}

void
PacketCloseAdapter(void *iface)
{	
	struct adapter		*a;
	struct ifreq		ifr;
	struct ieee80211req	ireq;

	if (iface == NULL)
		return;

	a = iface;

	/* Reset net80211 roaming */
	bzero((char *)&ireq, sizeof(ireq));
	strncpy(ireq.i_name, a->name, sizeof (ifr.ifr_name));
	ireq.i_type = IEEE80211_IOC_ROAMING;
	ireq.i_val = a->prev_roaming;
	ioctl(a->socket, SIOCS80211, &ireq);

	bzero((char *)&ifr, sizeof(ifr));
        strncpy(ifr.ifr_name, a->name, sizeof (ifr.ifr_name));
        ioctl(a->socket, SIOCGIFFLAGS, (caddr_t)&ifr);
        ifr.ifr_flags &= ~IFF_UP;
        ioctl(a->socket, SIOCSIFFLAGS, (caddr_t)&ifr);
	close(a->socket);
	free(a);

	return;
}
Commit	Line	Data
da211034 SZ	1	/*-
	2	* Copyright (c) 2005
	3	* Bill Paul <wpaul@windriver.com>. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	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.
	19	*
	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.
	31	*
8e61a47d	32	* $FreeBSD: head/usr.sbin/wpa/wpa_supplicant/Packet32.c 189220 2009-03-01 08:01:38Z sam $
da211034 SZ	33	*/
da211034 SZ	34
8e61a47d	35
da211034 SZ	36	/*
	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.
	41	*/
	42
	43	#include <sys/types.h>
	44	#include <sys/param.h>
	45	#include <sys/socket.h>
	46	#include <sys/ioctl.h>
da211034 SZ	47	#include <sys/errno.h>
	48	#include <sys/sysctl.h>
	49	#include <sys/fcntl.h>
da211034 SZ	50	#include <net/if.h>
	51	#include <net/if_dl.h>
	52	#include <net/if_var.h>
	53
	54	#include <netinet/in.h>
	55	#include <arpa/inet.h>
	56	#include <netdb.h>
4d37d7b9	57	#include <net/bpf.h>
da211034 SZ	58	#include <net/route.h>
da211034 SZ	59
a69e7202 SZ	60	#include <netproto/802_11/ieee80211_ioctl.h>
a69e7202 SZ	61
da211034 SZ	62	#include <stdio.h>
	63	#include <string.h>
	64	#include <stdlib.h>
	65	#include <unistd.h>
	66	#include <pcap.h>
	67
	68	#include "Packet32.h"
	69
	70	#define OID_802_11_ADD_KEY 0x0d01011D
	71
	72	typedef ULONGLONG NDIS_802_11_KEY_RSC;
	73	typedef UCHAR NDIS_802_11_MAC_ADDRESS[6];
	74
	75	typedef struct NDIS_802_11_KEY {
	76	ULONG Length;
	77	ULONG KeyIndex;
	78	ULONG KeyLength;
	79	NDIS_802_11_MAC_ADDRESS BSSID;
	80	NDIS_802_11_KEY_RSC KeyRSC;
	81	UCHAR KeyMaterial[1];
	82	} NDIS_802_11_KEY;
	83
	84	typedef struct NDIS_802_11_KEY_COMPAT {
	85	ULONG Length;
	86	ULONG KeyIndex;
	87	ULONG KeyLength;
	88	NDIS_802_11_MAC_ADDRESS BSSID;
	89	UCHAR Pad[6]; /* Make struct layout match Windows. */
	90	NDIS_802_11_KEY_RSC KeyRSC;
	91	#ifdef notdef
	92	UCHAR KeyMaterial[1];
	93	#endif
	94	} NDIS_802_11_KEY_COMPAT;
	95
	96	#define TRUE 1
	97	#define FALSE 0
	98
	99	struct adapter {
	100	int socket;
	101	char name[IFNAMSIZ];
a69e7202	102	int prev_roaming;
da211034 SZ	103	};
	104
	105	PCHAR
	106	PacketGetVersion(void)
	107	{
	108	return("FreeBSD WinPcap compatibility shim v1.0");
	109	}
	110
	111	void *
9a92bb4c	112	PacketOpenAdapter(CHAR *iface)
da211034 SZ	113	{
	114	struct adapter *a;
	115	int s;
	116	int ifflags;
	117	struct ifreq ifr;
a69e7202	118	struct ieee80211req ireq;
da211034 SZ	119
	120	s = socket(PF_INET, SOCK_DGRAM, 0);
	121
	122	if (s == -1)
	123	return(NULL);
	124
	125	a = malloc(sizeof(struct adapter));
	126	if (a == NULL)
	127	return(NULL);
	128
	129	a->socket = s;
a69e7202 SZ	130	if (strncmp(iface, "\\Device\\NPF_", 12) == 0)
	131	iface += 12;
	132	else if (strncmp(iface, "\\DEVICE\\", 8) == 0)
	133	iface += 8;
da211034 SZ	134	snprintf(a->name, IFNAMSIZ, "%s", iface);
da211034 SZ	135
a69e7202 SZ	136	/* Turn off net80211 roaming */
	137	bzero((char *)&ireq, sizeof(ireq));
	138	strncpy(ireq.i_name, iface, sizeof (ifr.ifr_name));
	139	ireq.i_type = IEEE80211_IOC_ROAMING;
	140	if (ioctl(a->socket, SIOCG80211, &ireq) == 0) {
	141	a->prev_roaming = ireq.i_val;
	142	ireq.i_val = IEEE80211_ROAMING_MANUAL;
	143	if (ioctl(a->socket, SIOCS80211, &ireq) < 0)
	144	fprintf(stderr,
	145	"Could not set IEEE80211_ROAMING_MANUAL\n");
	146	}
	147
da211034 SZ	148	bzero((char *)&ifr, sizeof(ifr));
	149	strncpy(ifr.ifr_name, iface, sizeof (ifr.ifr_name));
	150	if (ioctl(a->socket, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
	151	free(a);
	152	close(s);
	153	return(NULL);
	154	}
	155	ifr.ifr_flags \|= IFF_UP;
	156	if (ioctl(a->socket, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
	157	free(a);
	158	close(s);
	159	return(NULL);
	160	}
	161
	162	return(a);
	163	}
	164
	165	int
9a92bb4c	166	PacketRequest(void iface, BOOLEAN set, PACKET_OID_DATA oid)
da211034 SZ	167	{
	168	struct adapter *a;
	169	uint32_t retval;
	170	struct ifreq ifr;
	171	NDIS_802_11_KEY *old;
	172	NDIS_802_11_KEY_COMPAT *new;
	173	PACKET_OID_DATA *o = NULL;
	174
	175	if (iface == NULL)
	176	return(-1);
	177
	178	a = iface;
	179	bzero((char *)&ifr, sizeof(ifr));
	180
	181	/*
	182	* This hack is necessary to work around a difference
	183	* betwee the GNU C and Microsoft C compilers. The NDIS_802_11_KEY
	184	* structure has a uint64_t in it, right after an array of
	185	* chars. The Microsoft compiler inserts padding right before
	186	* the 64-bit value to align it on a 64-bit boundary, but
	187	* GCC only aligns it on a 32-bit boundary. Trying to pass
	188	* the GCC-formatted structure to an NDIS binary driver
	189	* fails because some of the fields appear to be at the
	190	* wrong offsets.
	191	*
	192	* To get around this, if we detect someone is trying to do
	193	* a set operation on OID_802_11_ADD_KEY, we shuffle the data
	194	* into a properly padded structure and pass that into the
	195	* driver instead. This allows the driver_ndis.c code supplied
	196	* with wpa_supplicant to work unmodified.
	197	*/
	198
	199	if (set == TRUE && oid->Oid == OID_802_11_ADD_KEY) {
	200	old = (NDIS_802_11_KEY *)&oid->Data;
	201	o = malloc(sizeof(PACKET_OID_DATA) +
	202	sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength);
	203	if (o == NULL)
	204	return(0);
	205	bzero((char *)o, sizeof(PACKET_OID_DATA) +
	206	sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength);
	207	o->Oid = oid->Oid;
	208	o->Length = sizeof(NDIS_802_11_KEY_COMPAT) + old->KeyLength;
	209	new = (NDIS_802_11_KEY_COMPAT *)&o->Data;
	210	new->KeyRSC = old->KeyRSC;
	211	new->Length = o->Length;
	212	new->KeyIndex = old->KeyIndex;
	213	new->KeyLength = old->KeyLength;
	214	bcopy(old->BSSID, new->BSSID, sizeof(NDIS_802_11_MAC_ADDRESS));
	215	bcopy(old->KeyMaterial, (char *)new +
	216	sizeof(NDIS_802_11_KEY_COMPAT), new->KeyLength);
	217	ifr.ifr_data = (caddr_t)o;
	218	} else
	219	ifr.ifr_data = (caddr_t)oid;
	220
	221	strlcpy(ifr.ifr_name, a->name, sizeof(ifr.ifr_name));
	222
	223	if (set == TRUE)
	224	retval = ioctl(a->socket, SIOCSDRVSPEC, &ifr);
	225	else
	226	retval = ioctl(a->socket, SIOCGDRVSPEC, &ifr);
	227
	228	if (o != NULL)
	229	free(o);
	230
231	if (retval)
232	return(0);
233
234	return(1);
235	}
236
237	int
9a92bb4c	238	PacketGetAdapterNames(CHAR namelist, ULONG len)
da211034 SZ	239	{
	240	int mib[6];
	241	size_t needed;
	242	struct if_msghdr *ifm;
	243	struct sockaddr_dl *sdl;
	244	char buf, lim, *next;
	245	char *plist;
	246	int spc;
	247	int i, ifcnt = 0;
	248
	249	plist = namelist;
	250	spc = 0;
	251
	252	bzero(plist, *len);
	253
	254	needed = 0;
	255	mib[0] = CTL_NET;
	256	mib[1] = PF_ROUTE;
	257	mib[2] = 0; /* protocol */
	258	mib[3] = 0; /* wildcard address family */
	259	mib[4] = NET_RT_IFLIST;
	260	mib[5] = 0; /* no flags */
	261
	262	if (sysctl (mib, 6, NULL, &needed, NULL, 0) < 0)
	263	return(FALSE);
	264
	265	buf = malloc (needed);
	266	if (buf == NULL)
	267	return(FALSE);
	268
	269	if (sysctl (mib, 6, buf, &needed, NULL, 0) < 0) {
	270	free(buf);
	271	return(FALSE);
	272	}
	273
	274	lim = buf + needed;
	275
	276	/* Generate interface name list. */
	277
	278	next = buf;
	279	while (next < lim) {
	280	ifm = (struct if_msghdr *)next;
	281	if (ifm->ifm_type == RTM_IFINFO) {
	282	sdl = (struct sockaddr_dl *)(ifm + 1);
8e61a47d	283	if (strnstr(sdl->sdl_data, "wlan", sdl->sdl_nlen)) {
da211034 SZ	284	if ((spc + sdl->sdl_nlen) > *len) {
	285	free(buf);
	286	return(FALSE);
	287	}
	288	strncpy(plist, sdl->sdl_data, sdl->sdl_nlen);
	289	plist += (sdl->sdl_nlen + 1);
	290	spc += (sdl->sdl_nlen + 1);
	291	ifcnt++;
	292	}
	293	}
	294	next += ifm->ifm_msglen;
	295	}
	296
	297
	298	/* Insert an extra "" as a spacer */
	299
	300	plist++;
	301	spc++;
	302
	303	/*
	304	* Now generate the interface description list. There
	305	* must be a unique description for each interface, and
	306	* they have to match what the ndis_events program will
	307	* feed in later. To keep this simple, we just repeat
	308	* the interface list over again.
	309	*/
	310
	311	next = buf;
	312	while (next < lim) {
	313	ifm = (struct if_msghdr *)next;
	314	if (ifm->ifm_type == RTM_IFINFO) {
	315	sdl = (struct sockaddr_dl *)(ifm + 1);
8e61a47d	316	if (strnstr(sdl->sdl_data, "wlan", sdl->sdl_nlen)) {
da211034 SZ	317	if ((spc + sdl->sdl_nlen) > *len) {
	318	free(buf);
	319	return(FALSE);
	320	}
	321	strncpy(plist, sdl->sdl_data, sdl->sdl_nlen);
	322	plist += (sdl->sdl_nlen + 1);
	323	spc += (sdl->sdl_nlen + 1);
	324	ifcnt++;
	325	}
	326	}
	327	next += ifm->ifm_msglen;
	328	}
	329
	330	free (buf);
	331
	332	*len = spc + 1;
	333
	334	return(TRUE);
	335	}
	336
	337	void
9a92bb4c	338	PacketCloseAdapter(void *iface)
da211034 SZ	339	{
	340	struct adapter *a;
	341	struct ifreq ifr;
a69e7202	342	struct ieee80211req ireq;
da211034 SZ	343
	344	if (iface == NULL)
	345	return;
	346
	347	a = iface;
	348
a69e7202 SZ	349	/* Reset net80211 roaming */
	350	bzero((char *)&ireq, sizeof(ireq));
	351	strncpy(ireq.i_name, a->name, sizeof (ifr.ifr_name));
	352	ireq.i_type = IEEE80211_IOC_ROAMING;
	353	ireq.i_val = a->prev_roaming;
	354	ioctl(a->socket, SIOCS80211, &ireq);
	355
da211034 SZ	356	bzero((char *)&ifr, sizeof(ifr));
	357	strncpy(ifr.ifr_name, a->name, sizeof (ifr.ifr_name));
	358	ioctl(a->socket, SIOCGIFFLAGS, (caddr_t)&ifr);
	359	ifr.ifr_flags &= ~IFF_UP;
	360	ioctl(a->socket, SIOCSIFFLAGS, (caddr_t)&ifr);
	361	close(a->socket);
	362	free(a);
	363
	364	return;
	365	}