Add autopilot mode and CLI parameter selection of to-be-banned subnet class.

Help needs to be implemented.

ddos-mitigator/superscript.sh

@@ -47,6 +47,76 @@ blue="\033[38;2;0;85;255m"
 bold="\033[1m"
 reset="\033[0m"
 
+function printHelp() {
+	echo "Help ... to be written."
+}
+
+function parseCommandline() {
+	TEMP=$(getopt -o 'a::,n:,h' -l 'auto::,netmask:,help' -- "$@")
+
+	if [ $? -ne 0 ] ; then
+		echo 'Error parsing command line options. Terminating. Invoke with --help for help.' >&2
+		exit 1
+	fi
+
+	eval set -- "${TEMP}"
+	unset TEMP
+
+	while true ; do
+		case "$1" in
+			'-a'|'--auto')
+				case $2 in
+					'')
+						autopilot=1
+					;;
+					*[!0-9]*)
+						echo "Invalid argument for parameter 'auto': '$2'. Invoke with --help for help." >&2
+						exit 1
+					;;
+					*)
+						autopilot=$2
+					;;
+				esac
+				shift
+			;;
+			'-n'|'--netmask')
+				case "$2" in
+					'1'|'8')
+						netmask=8
+					;;
+					'2'|'16')
+						netmask=16
+					;;
+					'3'|'24')
+						netmask=24
+					;;
+					'4'|'32')
+						netmask=32
+					;;
+					*)
+						echo "Invalid argument for parameter 'netmask': '$2'. Invoke with --help for help." >&2
+						exit 1
+					;;
+				esac
+				shift
+			;;
+			'-h'|'--help')
+				printHelp
+				exit
+			;;
+			'--')
+				shift
+				break
+			;;
+			*)
+				echo "Unknown error on command line argument '$1'. Terminating." >&2
+				exit 1
+			;;
+		esac
+		shift
+	done
+}
+
 # Clean up when the script exits.
 trap 'sudo -k; popd; rm -r ${tmpdir}' EXIT
 
@@ -56,6 +126,12 @@ tmpdir=$(mktemp -d)
 pushd "${tmpdir}"
 touch "${banlist}"
 
+# Parse the command line options
+autopilot=0
+netmask=0
+
+parseCommandline "$@"
+
 # Determine the current connections to the desired port; store the raw data in
 # $fileraw.
 netstat -nt | grep "${MY_IP}:${MY_PORT}" | tr -s '[:blank:]' | cut -d' ' -f5 \
@@ -73,12 +149,13 @@ nlines24=$(cat "${file24}" | wc -l)
 nlines16=$(cat "${file16}" | wc -l)
 nlines8=$(cat "${file8}" | wc -l)
 
+if [ ${netmask} -eq 0 ] ; then
 	# Now let the user choose which file to process.
 	echo "We've got:"
-echo "[1] 32bit: ${nlines32} entries"
+	echo "[1] 8bit: ${nlines8} entries"
-echo "[2] 24bit: ${nlines24} entries"
+	echo "[2] 16bit: ${nlines16} entries"
-echo "[3] 16bit: ${nlines16} entries"
+	echo "[3] 24bit: ${nlines24} entries"
-echo "[4] 8bit: ${nlines8} entries"
+	echo "[4] 32bit: ${nlines32} entries"
 	read -p 'Which one do you want to work with (q=Quit) [1-4]? ' choice
 
 	# Based on the user's choice, initialize the variables $file, $ext and
@@ -86,24 +163,16 @@ read -p 'Which one do you want to work with (q=Quit) [1-4]? ' choice
 	# used to color the output based on subnet-type.
 	case "${choice}" in
 		"1" )
-		file="${file32}"
+			netmask=8
-		ext="${ext32}"
-		nlines="${nlines32}"
 		;;
 		"2" )
-		file="${file24}"
+			netmask=16
-		ext="${ext24}"
-		nlines="${nlines24}"
 		;;
 		"3" )
-		file="${file16}"
+			netmask=24
-		ext="${ext16}"
-		nlines="${nlines16}"
 		;;
 		"4" )
-		file="${file8}"
+			netmask=32
-		ext="${ext8}"
-		nlines="${nlines8}"
 		;;
 		"Q" | "q" )
 			echo "You chose to abort. That's fine! Have a nice day!"
@@ -114,6 +183,16 @@ case "${choice}" in
 			exit 1
 		;;
 	esac
+fi
+
+# Now initialize the variables $file, $ext and $nlines based on the chosen $netmask
+TEMP="file${netmask}"
+file="${!TEMP}"
+TEMP="ext${netmask}"
+ext="${!TEMP}"
+TEMP="nlines${netmask}"
+nlines="${!TEMP}"
+unset TEMP
 
 echo "Processing ${file}."
 
@@ -197,18 +276,35 @@ function processFile () {
 		count="$(echo "${line}" | cut -d' ' -f2)"
 		addr="$(echo "${line}" | cut -d' ' -f3-)${ext}"
 		setHilite "${count}"
+		if [[ autopilot -eq 0 ]] ; then
 			whois "${addr}" | tee "${whoisoutput}"
+		else
+			whois "${addr}" > "${whoisoutput}"
+		fi
 		grep -iq "^country: *cn$" "${whoisoutput}"
 		country_cn=$?
 		grep -iq "^source: *apnic$" "${whoisoutput}"
 		source_apnic=$?
-		if [[ ${country_cn} -eq 0 && ${source_apnic} -eq 0 ]] ; then
-			echo -e "${red}Country = CN and source = APNIC!${reset}"
-		fi
 		echo -en "Address ${bold}$((nline++)) of ${nlines}${reset}: \
-Found '${blue}${addr}${reset}' ${hilite}${count}${reset} times. Ban [y/N/s=No, \
+Found '${blue}${addr}${reset}' ${hilite}${count}${reset} times."
-and skip remaining]? "
+
+		if [[ ${autopilot} -eq 0 ]] ; then
+			echo -en  "Ban [y/N/s=No, and skip remaining]? "
 			read banaction
+		else
+			echo -en "\n${red}Autopilot active.${reset} "
+			if [[ ${country_cn} -eq 0 && ${source_apnic} -eq 0 ]] ; then
+				if [[ $count -ge $autopilot ]] ; then
+					banaction=y
+				else
+					echo -en "${yellow}Ignoring because count ${count} is below specified limit of ${autopilot}.${reset} "
+					banaction=n
+				fi
+			else
+				banaction=n
+			fi
+		fi
+
 		case "${banaction}" in
 			"s" | "S" )
 				echo -e "Not banning '${blue}${addr}${reset}', \