checkPorts

checkPorts

#! /bin/bash

RED='\033[0;31m'
LIGHT_RED='\033[1;31m'
LIGHT_GREEN='\033[1;32m'
YELLOW='\033[1;33m'
BLUE='\033[1;36m'
NC='\033[0m'  # NO COLOR

OPEN_PORT_FLAG=false

function checkPorts(){
	for i in `seq 30025 30035`
	do
#lsof -t -i:${i}
		RESULT=`lsof -t -i:${i}`
		EXITCODE=$?
		if [ ${EXITCODE} -eq 1 ];then 
			printf "${BLUE} Port ${i}: closed\n${NC}"
		else
			OPEN_PORT_FLAG=true
			printf "${LIGHT_RED} Port ${i}: open; Process: ${RESULT}\n${NC}"
		fi
	done
}

function closePort(){
	if [ "${OPEN_PORT_FLAG}" = false ]; then
		printf "${YELLOW} There are no open ports to close\n${NC}"
	else
		read -p $'\e[1;36m Enter the port to close: \e[0m: ' eotuyx
		
		# check input
		if ! [[ "${eotuyx}" -ge 30025 && "${eotuyx}" -le 30035 ]]; then
			printf "${LIGHT_RED} ERROR! Invalid input! Enter a port number in scanned range.\n${NC}"
		else
			`kill -9 $(lsof -t -i:${eotuyx})`
			RESULT=`lsof -t -i:${eotuyx}`
			EXITCODE=$?
			if [ ${EXITCODE} -eq 1 ];then 
				printf "${BLUE} Port ${eotuyx}: closed\n${NC}"
			else
				printf "${LIGHT_RED} ERROR; COULD NOT CLOSE PORT ${eotuyx}\n${NC}"
			fi # end exitCode check
		fi #end input check
	fi # end openPort check
}

clear


while true; do
	echo -e ${BLUE}" Menu"
	echo " *********************************************"
	printf "${LIGHT_GREEN} a) Scan ports 30025-30035\n"
	printf "${LIGHT_GREEN} b) kill port\n"
	printf "${LIGHT_RED} x) Exit\n"
	printf "\n$NC"
	read -p " Please make a selection: " eotuyx
	case $eotuyx in
		[Aa]* ) checkPorts; continue;;
		[Bb]* ) closePort; continue;;
		[XxQq]* ) break;;
		* ) -e "\n$NC" + "Please answer with a, or x(or q).";;
	esac
done

v1.0.2: added input checking. Only allows killPort on the range specified. Plan to add variable port ranges later.