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/*
* iwinfo - Wireless Information Library - Linux Wireless Extension Backend
*
* Copyright (C) 2009 Jo-Philipp Wich <xm@subsignal.org>
*
* The iwinfo library is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* The iwinfo library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with the iwinfo library. If not, see http://www.gnu.org/licenses/.
*
* Parts of this code are derived from the Linux wireless tools, iwlib.c,
* iwlist.c and iwconfig.c in particular.
*/
#include "iwinfo.h"
#include "iwinfo_wext.h"
static int ioctl_socket = -1;
static double wext_freq2float(const struct iw_freq *in)
{
int i;
double res = (double) in->m;
for(i = 0; i < in->e; i++) res *= 10;
return res;
}
static int wext_ioctl(const char *ifname, int cmd, struct iwreq *wrq)
{
/* prepare socket */
if( ioctl_socket == -1 )
ioctl_socket = socket(AF_INET, SOCK_DGRAM, 0);
strncpy(wrq->ifr_name, ifname, IFNAMSIZ);
return ioctl(ioctl_socket, cmd, wrq);
}
int wext_probe(const char *ifname)
{
struct iwreq wrq;
if(wext_ioctl(ifname, SIOCGIWNAME, &wrq) >= 0)
return 1;
return 0;
}
int wext_get_mode(const char *ifname, char *buf)
{
struct iwreq wrq;
if(wext_ioctl(ifname, SIOCGIWMODE, &wrq) >= 0)
{
switch(wrq.u.mode)
{
case 0:
sprintf(buf, "Auto");
break;
case 1:
sprintf(buf, "Ad-Hoc");
break;
case 2:
sprintf(buf, "Client");
break;
case 3:
sprintf(buf, "Master");
break;
case 4:
sprintf(buf, "Repeater");
break;
case 5:
sprintf(buf, "Secondary");
break;
case 6:
sprintf(buf, "Monitor");
break;
default:
sprintf(buf, "Unknown");
}
return 0;
}
return -1;
}
int wext_get_ssid(const char *ifname, char *buf)
{
struct iwreq wrq;
wrq.u.essid.pointer = (caddr_t) buf;
wrq.u.essid.length = IW_ESSID_MAX_SIZE + 1;
wrq.u.essid.flags = 0;
if(wext_ioctl(ifname, SIOCGIWESSID, &wrq) >= 0)
return 0;
return -1;
}
int wext_get_bssid(const char *ifname, char *buf)
{
struct iwreq wrq;
if(wext_ioctl(ifname, SIOCGIWAP, &wrq) >= 0)
{
sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X",
(uint8_t)wrq.u.ap_addr.sa_data[0], (uint8_t)wrq.u.ap_addr.sa_data[1],
(uint8_t)wrq.u.ap_addr.sa_data[2], (uint8_t)wrq.u.ap_addr.sa_data[3],
(uint8_t)wrq.u.ap_addr.sa_data[4], (uint8_t)wrq.u.ap_addr.sa_data[5]);
return 0;
}
return -1;
}
int wext_get_bitrate(const char *ifname, int *buf)
{
struct iwreq wrq;
if(wext_ioctl(ifname, SIOCGIWRATE, &wrq) >= 0)
{
*buf = wrq.u.bitrate.value;
return 0;
}
return -1;
}
int wext_get_channel(const char *ifname, int *buf)
{
struct iwreq wrq;
if(wext_ioctl(ifname, SIOCGIWFREQ, &wrq) >= 0)
{
/* FIXME: iwlib has some strange workarounds here, maybe we need them as well... */
*buf = (int) wext_freq2float(&wrq.u.freq);
return 0;
}
return -1;
}
int wext_get_signal(const char *ifname, int *buf)
{
struct iwreq wrq;
struct iw_statistics stats;
wrq.u.data.pointer = (caddr_t) &stats;
wrq.u.data.length = sizeof(struct iw_statistics);
wrq.u.data.flags = 1;
if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0)
{
*buf = (stats.qual.level - 0x100);
return 0;
}
return -1;
}
int wext_get_noise(const char *ifname, int *buf)
{
struct iwreq wrq;
struct iw_statistics stats;
wrq.u.data.pointer = (caddr_t) &stats;
wrq.u.data.length = sizeof(struct iw_statistics);
wrq.u.data.flags = 1;
if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0)
{
*buf = (stats.qual.noise - 0x100);
return 0;
}
return -1;
}
int wext_get_quality(const char *ifname, int *buf)
{
struct iwreq wrq;
struct iw_statistics stats;
wrq.u.data.pointer = (caddr_t) &stats;
wrq.u.data.length = sizeof(struct iw_statistics);
wrq.u.data.flags = 1;
if(wext_ioctl(ifname, SIOCGIWSTATS, &wrq) >= 0)
{
*buf = stats.qual.qual;
return 0;
}
return -1;
}
int wext_get_quality_max(const char *ifname, int *buf)
{
struct iwreq wrq;
struct iw_range range;
wrq.u.data.pointer = (caddr_t) ⦥
wrq.u.data.length = sizeof(struct iw_range);
wrq.u.data.flags = 0;
if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0)
{
*buf = range.max_qual.qual;
return 0;
}
return -1;
}
int wext_get_enctype(const char *ifname, char *buf)
{
/* Stub */
return -1;
}
int wext_get_assoclist(const char *ifname, char *buf, int *len)
{
/* Stub */
return -1;
}
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