401 lines
8.6 KiB
C
401 lines
8.6 KiB
C
/*
|
|
* iwinfo - Wireless Information Library - Madwifi 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/.
|
|
*
|
|
* The signal handling code is derived from the official madwifi tools,
|
|
* wlanconfig.c in particular. The encryption property handling was
|
|
* inspired by the hostapd madwifi driver.
|
|
*/
|
|
|
|
#include "iwinfo_madwifi.h"
|
|
#include "iwinfo_wext.h"
|
|
|
|
static int ioctl_socket = -1;
|
|
|
|
static int madwifi_ioctl(struct iwreq *wrq, const char *ifname, int cmd, void *data, size_t len)
|
|
{
|
|
/* prepare socket */
|
|
if( ioctl_socket == -1 )
|
|
ioctl_socket = socket(AF_INET, SOCK_DGRAM, 0);
|
|
|
|
strncpy(wrq->ifr_name, ifname, IFNAMSIZ);
|
|
|
|
if( data != NULL )
|
|
{
|
|
if( len < IFNAMSIZ )
|
|
{
|
|
memcpy(wrq->u.name, data, len);
|
|
}
|
|
else
|
|
{
|
|
wrq->u.data.pointer = data;
|
|
wrq->u.data.length = len;
|
|
}
|
|
}
|
|
|
|
return ioctl(ioctl_socket, cmd, wrq);
|
|
}
|
|
|
|
static int get80211priv(const char *ifname, int op, void *data, size_t len)
|
|
{
|
|
struct iwreq iwr;
|
|
|
|
if( madwifi_ioctl(&iwr, ifname, op, data, len) < 0 )
|
|
return -1;
|
|
|
|
return iwr.u.data.length;
|
|
}
|
|
|
|
|
|
int madwifi_probe(const char *ifname)
|
|
{
|
|
int fd, ret;
|
|
char path[32];
|
|
char name[5];
|
|
|
|
sprintf(path, "/proc/sys/net/%s/%%parent", ifname);
|
|
ret = 0;
|
|
|
|
if( (fd = open(path, O_RDONLY)) > -1 )
|
|
{
|
|
if( read(fd, name, 4) == 4 )
|
|
ret = strncmp(name, "wifi", 4) ? 0 : 1;
|
|
|
|
(void) close(fd);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int madwifi_get_mode(const char *ifname, char *buf)
|
|
{
|
|
return wext_get_mode(ifname, buf);
|
|
}
|
|
|
|
int madwifi_get_ssid(const char *ifname, char *buf)
|
|
{
|
|
return wext_get_ssid(ifname, buf);
|
|
}
|
|
|
|
int madwifi_get_bssid(const char *ifname, char *buf)
|
|
{
|
|
return wext_get_bssid(ifname, buf);
|
|
}
|
|
|
|
int madwifi_get_channel(const char *ifname, int *buf)
|
|
{
|
|
int i;
|
|
uint16_t freq;
|
|
struct iwreq wrq;
|
|
struct ieee80211req_chaninfo chans;
|
|
|
|
if( madwifi_ioctl(&wrq, ifname, SIOCGIWFREQ, NULL, 0) >= 0 )
|
|
{
|
|
/* Madwifi returns a Hz frequency, get it's freq list to find channel index */
|
|
freq = (uint16_t)(wrq.u.freq.m / 100000);
|
|
|
|
if( get80211priv(ifname, IEEE80211_IOCTL_GETCHANINFO, &chans, sizeof(chans)) >= 0 )
|
|
{
|
|
*buf = 0;
|
|
|
|
for( i = 0; i < chans.ic_nchans; i++ )
|
|
{
|
|
if( freq == chans.ic_chans[i].ic_freq )
|
|
{
|
|
*buf = chans.ic_chans[i].ic_ieee;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int madwifi_get_frequency(const char *ifname, int *buf)
|
|
{
|
|
struct iwreq wrq;
|
|
|
|
if( madwifi_ioctl(&wrq, ifname, SIOCGIWFREQ, NULL, 0) >= 0 )
|
|
{
|
|
*buf = (uint16_t)(wrq.u.freq.m / 100000);
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int madwifi_get_bitrate(const char *ifname, int *buf)
|
|
{
|
|
unsigned int mode, len, rate, rate_count;
|
|
uint8_t tmp[24*1024];
|
|
uint8_t *cp;
|
|
struct iwreq wrq;
|
|
struct ieee80211req_sta_info *si;
|
|
|
|
if( madwifi_ioctl(&wrq, ifname, SIOCGIWMODE, NULL, 0) >= 0 )
|
|
{
|
|
mode = wrq.u.mode;
|
|
|
|
/* Calculate bitrate average from associated stations in ad-hoc mode */
|
|
if( mode == 1 )
|
|
{
|
|
rate = rate_count = 0;
|
|
|
|
if( (len = get80211priv(ifname, IEEE80211_IOCTL_STA_INFO, tmp, 24*1024)) > 0 )
|
|
{
|
|
cp = tmp;
|
|
|
|
do {
|
|
si = (struct ieee80211req_sta_info *) cp;
|
|
|
|
if( si->isi_rssi > 0 )
|
|
{
|
|
rate_count++;
|
|
rate += ((si->isi_rates[si->isi_txrate] & IEEE80211_RATE_VAL) / 2);
|
|
}
|
|
|
|
cp += si->isi_len;
|
|
len -= si->isi_len;
|
|
} while (len >= sizeof(struct ieee80211req_sta_info));
|
|
}
|
|
|
|
*buf = (rate == 0 || rate_count == 0) ? 0 : (rate / rate_count);
|
|
return 0;
|
|
}
|
|
|
|
/* Return whatever wext tells us ... */
|
|
return wext_get_bitrate(ifname, buf);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int madwifi_get_signal(const char *ifname, int *buf)
|
|
{
|
|
unsigned int mode, len, rssi, rssi_count;
|
|
uint8_t tmp[24*1024];
|
|
uint8_t *cp;
|
|
struct iwreq wrq;
|
|
struct ieee80211req_sta_info *si;
|
|
|
|
if( madwifi_ioctl(&wrq, ifname, SIOCGIWMODE, NULL, 0) >= 0 )
|
|
{
|
|
mode = wrq.u.mode;
|
|
|
|
/* Calculate signal average from associated stations in ap or ad-hoc mode */
|
|
if( mode == 1 )
|
|
{
|
|
rssi = rssi_count = 0;
|
|
|
|
if( (len = get80211priv(ifname, IEEE80211_IOCTL_STA_INFO, tmp, 24*1024)) > 0 )
|
|
{
|
|
cp = tmp;
|
|
|
|
do {
|
|
si = (struct ieee80211req_sta_info *) cp;
|
|
|
|
if( si->isi_rssi > 0 )
|
|
{
|
|
rssi_count++;
|
|
rssi -= (si->isi_rssi - 95);
|
|
}
|
|
|
|
cp += si->isi_len;
|
|
len -= si->isi_len;
|
|
} while (len >= sizeof(struct ieee80211req_sta_info));
|
|
}
|
|
|
|
*buf = (rssi == 0 || rssi_count == 0) ? 1 : -(rssi / rssi_count);
|
|
return 0;
|
|
}
|
|
|
|
/* Return whatever wext tells us ... */
|
|
return wext_get_signal(ifname, buf);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int madwifi_get_noise(const char *ifname, int *buf)
|
|
{
|
|
return wext_get_noise(ifname, buf);
|
|
}
|
|
|
|
int madwifi_get_quality(const char *ifname, int *buf)
|
|
{
|
|
unsigned int mode, len, quality, quality_count;
|
|
uint8_t tmp[24*1024];
|
|
uint8_t *cp;
|
|
struct iwreq wrq;
|
|
struct ieee80211req_sta_info *si;
|
|
|
|
if( madwifi_ioctl(&wrq, ifname, SIOCGIWMODE, NULL, 0) >= 0 )
|
|
{
|
|
mode = wrq.u.mode;
|
|
|
|
/* Calculate signal average from associated stations in ad-hoc mode */
|
|
if( mode == 1 )
|
|
{
|
|
quality = quality_count = 0;
|
|
|
|
if( (len = get80211priv(ifname, IEEE80211_IOCTL_STA_INFO, tmp, 24*1024)) > 0 )
|
|
{
|
|
cp = tmp;
|
|
|
|
do {
|
|
si = (struct ieee80211req_sta_info *) cp;
|
|
|
|
if( si->isi_rssi > 0 )
|
|
{
|
|
quality_count++;
|
|
quality += si->isi_rssi;
|
|
}
|
|
|
|
cp += si->isi_len;
|
|
len -= si->isi_len;
|
|
} while (len >= sizeof(struct ieee80211req_sta_info));
|
|
}
|
|
|
|
*buf = (quality == 0 || quality_count == 0) ? 0 : (quality / quality_count);
|
|
return 0;
|
|
}
|
|
|
|
/* Return whatever wext tells us ... */
|
|
return wext_get_quality(ifname, buf);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int madwifi_get_quality_max(const char *ifname, int *buf)
|
|
{
|
|
return wext_get_quality_max(ifname, buf);
|
|
}
|
|
|
|
int madwifi_get_enctype(const char *ifname, char *buf)
|
|
{
|
|
struct iwreq wrq;
|
|
struct ieee80211req_key wk;
|
|
int wpa_version = 0, ciphers = 0, key_type = 0;
|
|
char cipher_string[32];
|
|
|
|
sprintf(buf, "Unknown");
|
|
|
|
memset(&wrq, 0, sizeof(wrq));
|
|
memset(&wk, 0, sizeof(wk));
|
|
memset(wk.ik_macaddr, 0xff, IEEE80211_ADDR_LEN);
|
|
|
|
/* Get key information */
|
|
if( get80211priv(ifname, IEEE80211_IOCTL_GETKEY, &wk, sizeof(wk)) >= 0 )
|
|
key_type = wk.ik_type;
|
|
|
|
/* Get wpa protocol version */
|
|
wrq.u.mode = IEEE80211_PARAM_WPA;
|
|
if( madwifi_ioctl(&wrq, ifname, IEEE80211_IOCTL_GETPARAM, NULL, 0) >= 0 )
|
|
wpa_version = wrq.u.mode;
|
|
|
|
/* Get used pairwise ciphers */
|
|
wrq.u.mode = IEEE80211_PARAM_UCASTCIPHERS;
|
|
if( madwifi_ioctl(&wrq, ifname, IEEE80211_IOCTL_GETPARAM, NULL, 0) >= 0 )
|
|
{
|
|
ciphers = wrq.u.mode;
|
|
|
|
if( wpa_version > 0 )
|
|
{
|
|
memset(cipher_string, 0, sizeof(cipher_string));
|
|
|
|
/* Looks like mixed wpa/wpa2 ? */
|
|
if( (ciphers & (1<<IEEE80211_CIPHER_TKIP)) && (ciphers & (1<<IEEE80211_CIPHER_AES_CCM)) )
|
|
wpa_version = 3;
|
|
|
|
|
|
if( (ciphers & (1<<IEEE80211_CIPHER_TKIP)) )
|
|
strcat(cipher_string, "TKIP, ");
|
|
|
|
if( (ciphers & (1<<IEEE80211_CIPHER_AES_CCM)) )
|
|
strcat(cipher_string, "CCMP, ");
|
|
|
|
if( (ciphers & (1<<IEEE80211_CIPHER_AES_OCB)) )
|
|
strcat(cipher_string, "AES-OCB, ");
|
|
|
|
if( (ciphers & (1<<IEEE80211_CIPHER_CKIP)) )
|
|
strcat(cipher_string, "CKIP, ");
|
|
|
|
cipher_string[strlen(cipher_string)-2] = 0;
|
|
}
|
|
|
|
switch(wpa_version)
|
|
{
|
|
case 3:
|
|
sprintf(buf, "mixed WPA/WPA2 (%s)", cipher_string);
|
|
break;
|
|
|
|
case 2:
|
|
sprintf(buf, "WPA2 (%s)", cipher_string);
|
|
break;
|
|
|
|
case 1:
|
|
sprintf(buf, "WPA (%s)", cipher_string);
|
|
break;
|
|
|
|
default:
|
|
sprintf(buf, "%s", (key_type == 0) ? "WEP" : "None");
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int madwifi_get_assoclist(const char *ifname, char *buf, int *len)
|
|
{
|
|
int bl, tl, noise;
|
|
uint8_t *cp;
|
|
uint8_t tmp[24*1024];
|
|
struct ieee80211req_sta_info *si;
|
|
struct iwinfo_assoclist_entry entry;
|
|
|
|
if( (tl = get80211priv(ifname, IEEE80211_IOCTL_STA_INFO, tmp, 24*1024)) > 0 )
|
|
{
|
|
cp = tmp;
|
|
bl = 0;
|
|
|
|
if( madwifi_get_noise(ifname, &noise) )
|
|
noise = 0;
|
|
|
|
do {
|
|
si = (struct ieee80211req_sta_info *) cp;
|
|
|
|
entry.signal = (si->isi_rssi - 95);
|
|
entry.noise = noise;
|
|
memcpy(entry.mac, &si->isi_macaddr, 6);
|
|
memcpy(&buf[bl], &entry, sizeof(struct iwinfo_assoclist_entry));
|
|
|
|
bl += sizeof(struct iwinfo_assoclist_entry);
|
|
cp += si->isi_len;
|
|
tl -= si->isi_len;
|
|
} while (tl >= sizeof(struct ieee80211req_sta_info));
|
|
|
|
*len = bl;
|
|
return 0;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
|