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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"
#define START_LINE 2 /* where to begin the screen */
/* GLOBALS */
static struct scan_result sr;
static pthread_t scan_thread;
static WINDOW *w_aplst;
/**
* Sanitize and format single scan entry as a string.
* @cur: entry to format
* @buf: buffer to put results into
* @buflen: length of @buf
*/
static void fmt_scan_entry(struct scan_entry *cur, char buf[], size_t buflen)
{
size_t len = 0;
if (cur->bss_signal) {
float sig_qual, sig_qual_max;
if (cur->bss_signal_qual) {
/* BSS_SIGNAL_UNSPEC is scaled 0..100 */
sig_qual = cur->bss_signal_qual;
sig_qual_max = 100;
} else {
if (cur->bss_signal < -110)
sig_qual = 0;
else if (cur->bss_signal > -40)
sig_qual = 70;
else
sig_qual = cur->bss_signal + 110;
sig_qual_max = 70;
}
len += snprintf(buf + len, buflen - len, "%3.0f%%, %d dBm",
(1E2 * sig_qual)/ sig_qual_max, cur->bss_signal);
} else if (cur->bss_signal_qual) {
len += snprintf(buf + len, buflen - len, "%2d/%d",
cur->bss_signal_qual, 100);
} else {
len += snprintf(buf + len, buflen - len, "? dBm");
}
if (cur->chan >= 0)
len += snprintf(buf + len, buflen - len, ", %s %3d, %d MHz",
cur->freq < 5e6 ? "ch" : "CH",
cur->chan, cur->freq);
else
len += snprintf(buf + len, buflen - len, ", %g GHz",
cur->freq / 1e3);
if (cur->bss_capa & WLAN_CAPABILITY_ESS) {
if (cur->bss_sta_count || cur->bss_chan_usage > 2) {
if (cur->bss_sta_count)
len += snprintf(buf + len, buflen - len, " %u sta", cur->bss_sta_count);
if (cur->bss_chan_usage > 2) /* 1% is 2.55 */
len += snprintf(buf + len, buflen - len, "%s %.0f%% chan",
cur->bss_sta_count? "," : "", (1e2 * cur->bss_chan_usage)/2.55e2);
} else {
len += snprintf(buf + len, buflen - len, " ESS");
}
if (cur->bss_capa & WLAN_CAPABILITY_RADIO_MEASURE)
len += snprintf(buf + len, buflen - len, ", Radio Measure");
if (cur->bss_capa & WLAN_CAPABILITY_SPECTRUM_MGMT)
len += snprintf(buf + len, buflen - len, ", Spectrum Mgmt");
} else if (cur->bss_capa & WLAN_CAPABILITY_IBSS) {
len += snprintf(buf + len, buflen - len, " IBSS");
}
}
static void display_aplist(WINDOW *w_aplst)
{
char s[IW_ESSID_MAX_SIZE << 3];
const char *sort_type[] = {
[SO_CHAN] = "Chan",
[SO_SIGNAL] = "Sig",
[SO_MAC] = "Mac",
[SO_ESSID] = "Essid",
[SO_OPEN] = "Open",
[SO_CHAN_SIG] = "Ch/Sg",
[SO_OPEN_SIG] = "Op/Sg"
};
int i, col, line = START_LINE;
struct scan_entry *cur;
/* Scanning can take several seconds - do not refresh if locked. */
if (pthread_mutex_trylock(&sr.mutex))
return;
if (sr.head || *sr.msg)
for (i = 1; i <= MAXYLEN; i++)
mvwclrtoborder(w_aplst, i, 1);
if (!sr.head)
waddstr_center(w_aplst, WAV_HEIGHT/2 - 1, sr.msg);
sort_scan_list(&sr.head);
/* Truncate overly long access point lists to match screen height. */
for (cur = sr.head; cur && line < MAXYLEN; line++, cur = cur->next) {
col = CP_SCAN_NON_AP;
if (!WLAN_CAPABILITY_IS_STA_BSS(cur->bss_capa) && (cur->bss_capa & WLAN_CAPABILITY_ESS)) {
col = cur->has_key ? CP_SCAN_CRYPT : CP_SCAN_UNENC;
}
wmove(w_aplst, line, 1);
if (!*cur->essid) {
sprintf(s, "%-*s ", sr.max_essid_len, "<hidden ESSID>");
wattron(w_aplst, COLOR_PAIR(col));
waddstr(w_aplst, s);
} else if (str_is_ascii(cur->essid)) {
sprintf(s, "%-*s ", sr.max_essid_len, cur->essid);
waddstr_b(w_aplst, s);
wattron(w_aplst, COLOR_PAIR(col));
} else {
sprintf(s, "%-*s ", sr.max_essid_len, "<cryptic ESSID>");
wattron(w_aplst, COLOR_PAIR(col));
waddstr(w_aplst, s);
}
waddstr(w_aplst, ether_addr(&cur->ap_addr));
wattroff(w_aplst, COLOR_PAIR(col));
fmt_scan_entry(cur, s, sizeof(s));
waddstr(w_aplst, " ");
waddstr(w_aplst, s);
}
if (sr.num.entries < MAX_CH_STATS)
goto done;
wmove(w_aplst, MAXYLEN, 1);
wadd_attr_str(w_aplst, A_REVERSE, "total:");
sprintf(s, " %d ", sr.num.entries);
waddstr(w_aplst, s);
sprintf(s, "%s %ssc", sort_type[conf.scan_sort_order], conf.scan_sort_asc ? "a" : "de");
wadd_attr_str(w_aplst, A_REVERSE, s);
if (sr.num.entries + START_LINE > line) {
sprintf(s, ", %d not shown", sr.num.entries + START_LINE - line);
waddstr(w_aplst, s);
}
if (sr.num.open) {
sprintf(s, ", %d open", sr.num.open);
waddstr(w_aplst, s);
}
if (sr.num.two_gig && sr.num.five_gig) {
waddch(w_aplst, ' ');
wadd_attr_str(w_aplst, A_REVERSE, "5/2GHz:");
sprintf(s, " %d/%d", sr.num.five_gig, sr.num.two_gig);
waddstr(w_aplst, s);
}
if (sr.channel_stats) {
waddch(w_aplst, ' ');
if (conf.scan_sort_order == SO_CHAN && !conf.scan_sort_asc)
sprintf(s, "bottom-%d:", (int)sr.num.ch_stats);
else
sprintf(s, "top-%d:", (int)sr.num.ch_stats);
wadd_attr_str(w_aplst, A_REVERSE, s);
for (i = 0; i < sr.num.ch_stats; i++) {
waddstr(w_aplst, i ? ", " : " ");
sprintf(s, "ch#%d", sr.channel_stats[i].val);
wadd_attr_str(w_aplst, A_BOLD, s);
sprintf(s, " (%d)", sr.channel_stats[i].count);
waddstr(w_aplst, s);
}
}
done:
pthread_mutex_unlock(&sr.mutex);
wrefresh(w_aplst);
}
void scr_aplst_init(void)
{
w_aplst = newwin_title(0, WAV_HEIGHT, "Scan window", false);
/* Gathering scan data can take seconds. Inform user. */
mvwaddstr(w_aplst, START_LINE, 1, "Waiting for scan data ...");
wrefresh(w_aplst);
init_scan_list(&sr);
pthread_create(&scan_thread, NULL, do_scan, &sr);
}
int scr_aplst_loop(WINDOW *w_menu)
{
int key;
display_aplist(w_aplst);
key = wgetch(w_menu);
switch (key) {
case 'a': /* ascending */
conf.scan_sort_asc = true;
return -1;
case 'c': /* channel */
conf.scan_sort_order = SO_CHAN;
return -1;
case 'C': /* channel and signal */
conf.scan_sort_order = SO_CHAN_SIG;
return -1;
case 'd': /* descending */
conf.scan_sort_asc = false;
return -1;
case 'e': /* ESSID */
conf.scan_sort_order = SO_ESSID;
return -1;
case 'm': /* MAC address */
conf.scan_sort_order = SO_MAC;
return -1;
case 'o': /* open (descending is default) */
conf.scan_sort_order = SO_OPEN;
conf.scan_sort_asc = false;
return -1;
case 'O': /* open and signal (descending) */
conf.scan_sort_order = SO_OPEN_SIG;
conf.scan_sort_asc = false;
return -1;
case 's': /* signal */
conf.scan_sort_order = SO_SIGNAL;
return -1;
}
return key;
}
void scr_aplst_fini(void)
{
pthread_cancel(scan_thread);
free_scan_list(sr.head);
free(sr.channel_stats);
delwin(w_aplst);
}
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