mwchang
DD-WRT Guru
Joined: 26 Mar 2013
Posts: 1889
Location: Hung Hom, Hong Kong
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 Posted: Wed Feb 28, 2024 13:18 Post subject: |
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Download the attached scanner.sh.txt, rename it to scanner.sh to use it.
If you cut-and-paste these codes into an SSH session via Windows Notepad, you might need to remove trailing carriage return ("\013") at the end of each line using command dos2unix, or Awk (not Ash shell) will complain about unexpected tokens!
DOS to Unix: Commands and Examples {6 Methods Explained}
https://phoenixnap.com/kb/convert-dos-to-unix
| Quote: | | Files created in DOS/Windows use carriage return (\r) and line feed (\n) for line endings. However, files in Unix/Linux solely use line feed. |
| Code: | #!/bin/sh
#
# Created by: kuthulu
#
# DD-WRT :: View topic - Wireless scanner for linux
# https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=34924&highlight=scanner
#
# DD-WRT :: View topic - Wireless Network Scanner script (Kuthulu) Help please ?
# https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=43598
#
# DD-WRT :: View topic - site survey vs. NetStumbler
# https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=23663&highlight=scanner
# wl passive 1
# to go back to normal mode type:
# wl passive 0
# when setting passive to 1 you are putting the router into passive scan mode,
# by default the router is in active scan mode.
# In active mode the router detects other APs by sending a packet and waiting
# for response. Only the Aps that send a response are showed in the site survey page.
# In passive mode the router just listens for packets from every AP.
#
# http://www.dd-wrt.com/wiki/index.php/Useful_Scripts#Wireless_Network_Scanner_.28working_on_DD-WRT_v24.29
#####################################
#
# Jul 15, 2008 Created by kuthulu at forum.dd-wrt.com (https://kuthulu.com/)
# https://forum.dd-wrt.com/phpBB2/profile_sec.php?mode=viewprofile&u=14849
# Dec 06, 2008 Reposted and edited by ruddles at forum.dd-wrt.com
# https://forum.dd-wrt.com/phpBB2/profile_sec.php?mode=viewprofile&u=49001
# Feb 28, 2024 Modified by mwchang(toylet.toylet@gmail.com) to fix bugs
#
#####################################
#
# The various escape codes you can use to color output to StdOut from Node JS · GitHub
# https://gist.github.com/abritinthebay/d80eb99b2726c83feb0d97eab95206c4
#
# talyian.github.io/ansicolors/
# https://talyian.github.io/ansicolors/
#
# Service set (802.11 network) - Wikipedia
# https://en.wikipedia.org/wiki/Service_set_(802.11_network)
# https://en.wikipedia.org/wiki/Service_set_(802.11_network)
#
# SSID Naming Conventions
# https://www.cisco.com/assets/sol/sb/WAP321_Emulators/WAP321_Emulator_v1.0.0.3/help/Wireless05.html
#
# The SSID (Service Set Identifier) can be any alphanumeric, case-sensitive entry from 2 to 32 characters.
# The printable characters plus the space (ASCII 0x20) are allowed, but
# these six characters are not: ?, ", $, [, \, ], and +.
#
# Because the site_survey command of DD-WRT uses "[" and "]" as field separators,
# the following SSID names will break this program when using them as Awk field separators:
#
# 1. "[LG_StickVacuum]xxxx"
# [code][ 2] SSID[[LG_StickVacuum]e6cb] BSSID[82:5B:65:68:E6:CB][....[/code]
#
awk -F "[][]" '
function haha() {
# dump input from site_survey
while (command|getline xx)
{
print xx;
}
}
BEGIN{
IGNORECASE = 1;
command = "site_survey 2>&1";
# ANSI terminal control codes
red = "\x1b[31m"; green = "\x1b[32m";
greenback="\x1b[42m"; yellow = "\x1b[33m";
cyan = "\x1b[36m"; blue = "\x1b[34m";
blueback = "\x1b[44m"; white = "\x1b[37m";
whiteback = "\x1b[47m";
underscore = "\x1b[4m"; clear = "\e[2J";
home = "\x1b[0;0H"; erase2end = "\x1b[K";
home = "\x1b[H";
dim = "\x1b[2m";
underscore = "\x1b[4m";
blink = "\x1b[5m";
reverse = "\x1b[7m";
hidden = "\x1b[8m";
reset = "\x1b[0m";
bright = "\x1b[1m";
cName = white; cSignal = green;
cNoise = red; cCaps = green;
cStrengthLow = blue blueback; cChannel = green;
cStrengthMed = white whiteback;
cStrengthHi = green greenback;
cStrengthAged = red;
# for testing no input
# command="";
zz=0;
for(;;)
{
while (command|getline)
{
# skip line 1
if ($22 == "") continue;
# using BSSID as array index
bssid=$6;
#name[bssid] = $4;
name[bssid]="[]";
# if ($4!="") {
if ($4=="") {
# SSID contains square brackets, breaking this parsing
zz=1;
} else {
# trim all spaces in AP name
cmd="echo " $4 " | sed -e s/[[:blank:]]//g";
cmd | getline result;
close(cmd);
name[bssid]=result;
}
channel[bssid] = $8;
freq[bssid]=$10;
rssi[bssid] = $14;
noise[bssid]= $16;
caps[bssid] = $20;
rate[bssid]=$24;
# convert stringt to number
row[bssid]=$2+0;
# arbitrary strength calc through trial and error... modify as you wish:
# be careful of the space before "+90"
sigstrength = ((rssi[x] - noise[x])*1.5) + ((rssi[x] +90)*1.5);
if (sigstrength <1) sigstrength=0;
strg[bssid]=sigstrength;
}
close(command);
# gsub(/[^\11\12\15\40-\176]/,"");
# asort(name);
#fmt = "%s%-15s %s%0"sigstrength"d "reset erase2end "\n %s %s%-4d %s%-4d %s%-4d %s%2s " reset erase2end "\n" erase2end "\n";
fmt="%-4s %-30s %4s %4s %4s %4s %4s %5s %-18s %8s\n";
printf "%s%s%s",home,clear;
printf "%s%s%s",bright,white,underscore;
printf fmt, "Row","Name","Chnl","Freq","RSSI","Rate","Caps","Noise","BSSID","Strength";
printf "%s%s",reset,white;
ln=0;
for (x in name)
{
# printf fmt, cName,name[x],cStrength,0,x,cSignal,rssi[x],cNoise,noise[x],cChannel, channel[x],cCaps,caps[x];
# print row[x] " " name[x] " " channel[x] " " rssi[x] " " noise[x] " " x;
printf fmt, row[x],name[x],channel[x],freq[x],rssi[x],rate[x],caps[x],noise[x],x,strg[x];
ln++;
#
# colorize strength
# cStrength = cStrengthLow;
# if(sigstrength>4) cStrength = cStrengthMed;
# if(sigstrength>7) cStrength = cStrengthHi;
# if(age[x]=0) cStrength = cStrengthAged;
}
if (ln == 0) {
print bright yellow "No Results - Do you have survey capability?"
}
printf "%s%s",bright,white;
print "Rows: " ln yellow " Hit [Ctrl]+[C] to stop!";
# debugging disabled
zz=0;
if (zz==1) {
haha();
exit;
}
}
}
'
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_________________
Router: Asus RT-N18U (rev. A1)
Drink, Blink, Stretch! Live long and prosper! May the Force and farces be with you!
Facebook: https://www.facebook.com/changmanwai
Website: https://sites.google.com/site/changmw
SETI@Home profile: http://setiathome.berkeley.edu/view_profile.php?userid=211832
GitHub: https://github.com/changmw/changmw |
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