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/*
* wavemon - a wireless network monitoring aplication
*
* Copyright (c) 2001-2002 Jan Morgenstern <jan@jm-music.de>
*
* wavemon is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2, or (at your option) any later
* version.
*
* wavemon 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 wavemon; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "iw_if.h"
static void display_aplist(WINDOW *w_aplst)
{
uint8_t buf[(sizeof(struct iw_quality) +
sizeof(struct sockaddr)) * IW_MAX_AP];
char s[0x100];
int i, j, line = 2;
struct iw_quality *qual, qual_pivot;
struct sockaddr *hwa, hwa_pivot;
struct iw_range range;
struct iw_levelstat dbm;
struct iwreq iwr;
int skfd = socket(AF_INET, SOCK_DGRAM, 0);
if (skfd < 0)
err_sys("%s: can not open socket", __func__);
iw_getinf_range(conf.ifname, &range);
for (i = 1; i <= MAXYLEN; i++)
mvwclrtoborder(w_aplst, i, 1);
strncpy(iwr.ifr_name, conf.ifname, IFNAMSIZ);
iwr.u.data.pointer = (caddr_t) buf;
iwr.u.data.length = IW_MAX_AP;
iwr.u.data.flags = 0;
if (ioctl(skfd, SIOCGIWAPLIST, &iwr) < 0) {
sprintf(s, "%s does not have a list of peers/access points",
conf.ifname);
waddstr_center(w_aplst, WAV_HEIGHT/2 - 1, s);
goto done;
}
if (iwr.u.data.length == 0) {
sprintf(s, "%s: no peer/access point in range", conf.ifname);
waddstr_center(w_aplst, WAV_HEIGHT/2 - 1, s);
} else if (iwr.u.data.length == 1) {
mvwaddstr(w_aplst, line, 1, "Peer/access point:");
} else {
sprintf(s, "%d peers/access points in range:", iwr.u.data.length);
mvwaddstr(w_aplst, line, 1, s);
}
hwa = (struct sockaddr *) buf;
qual = (struct iw_quality *) (hwa + iwr.u.data.length);
/*
* Show access points in descending order of signal quality by
* sorting both lists in parallel, using simple insertion sort.
*/
for (i = 0; i < iwr.u.data.length; i++) {
qual_pivot = qual[i];
hwa_pivot = hwa[i];
for (j = i; j > 0 && qual[j-1].qual < qual_pivot.qual; j--) {
qual[j] = qual[j-1];
hwa[j] = hwa[j-1];
}
qual[j] = qual_pivot;
hwa[j] = hwa_pivot;
}
line += 2;
/* Truncate overly long access point lists to match screen height */
for (i = 0; i < iwr.u.data.length && line < MAXYLEN; i++, line++) {
mvwaddstr(w_aplst, line++, 1, " ");
waddstr_b(w_aplst, mac_addr(&hwa[i]));
if (iwr.u.data.flags) {
iw_sanitize(&range, &qual[i], &dbm);
sprintf(s, "Quality%c %2d/%d, Signal%c %.0f dBm (%s), Noise%c %.0f dBm",
qual[i].updated & IW_QUAL_QUAL_UPDATED ? ':' : '=',
qual[i].qual, range.max_qual.qual,
qual[i].updated & IW_QUAL_LEVEL_UPDATED ? ':' : '=',
dbm.signal, dbm2units(dbm.signal),
qual[i].updated & IW_QUAL_NOISE_UPDATED ? ':' : '=',
dbm.noise);
mvwaddstr(w_aplst, line++, 5, s);
}
}
done:
close(skfd);
wrefresh(w_aplst);
}
enum wavemon_screen scr_aplst(WINDOW *w_menu)
{
WINDOW *w_aplst;
struct timer t1;
int key = 0;
w_aplst = newwin_title(0, WAV_HEIGHT, "Access point list", false);
while (key < KEY_F(1) || key > KEY_F(10)) {
display_aplist(w_aplst);
start_timer(&t1, 50000);
while (!end_timer(&t1) && (key = wgetch(w_menu)) <= 0)
usleep(5000);
/* Keyboard shortcuts */
if (key == 'q')
key = KEY_F(10);
else if (key == 'i')
key = KEY_F(1);
}
delwin(w_aplst);
return key - KEY_F(1);
}
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