StunScript

#!/bin/bash

function valid_ip()
{
    local  ip=$1
    local  stat=1

    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
        OIFS=$IFS
        IFS='.'
        ip=($ip)
        IFS=$OIFS
        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
            && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
        stat=$?
    fi
    return $stat
}


#########################################################################################
function port_is_ok() {
    local port="$1"
	
    local -i port_num=$(to_int "${port}" 2>/dev/null)
   	
		
    if (( $port_num < 1 || $port_num > 65535 )) ; then
       return 1 
    else
	return 0
	fi
}
function to_int {
    local -i num="10#${1}"
    echo "${num}"
}
#########################################################################################
AllFile=true

SERVICE="/usr/bin/turnserver"
if pgrep "$SERVICE" >/dev/null 2>&1 ; then
    echo "$SERVICE is running"
fi

FILE=/etc/turnserver.conf
if ! [ -f "$FILE" ]; then
    echo "$FILE does not exist , STUN is not installed correctly !!"
	AllFile=false
fi


##############################################################################################


if [ "$AllFile" = true ] ; then


echo "Enter the IP address of STUN server - or enter q to skip :"
read srvip
if ! [ "$srvip" = 'q' ] ; then
while ! valid_ip $srvip
do
   echo "Bad IP Address"
echo "Please Re-Enter the IP address of STUN server - or enter q to skip : :"
read srvip
done


if valid_ip $srvip
then
sed -i "s+#stun-only+stun-only+g" "/etc/turnserver.conf"
sed  -i "0,/#listening-ip=/{/#listening-ip=.*/s//listening-ip=$srvip/}" "/etc/turnserver.conf"
sed -i "s+#listening-ip=.*+###+" "/etc/turnserver.conf"
sed  -i "0,/listening-ip=/{/listening-ip=.*/s//listening-ip=$srvip/}" "/etc/turnserver.conf"
#sed -i "s+#listening-ip=.*+listening-ip=$srvip+" "/etc/turnserver.conf"
#sed -i "s+listening-ip=.*+listening-ip=$srvip+" "/etc/turnserver.conf"
else echo "Bad IP Address"
fi
fi

############################################################################################
echo "Enter the STUN Port number - or enter q to skip :"
read stunprt
if ! [ "$stunprt" = 'q' ] ; then
while ! port_is_ok $stunprt ; do
echo "STUN Port number is not Valid !!"
echo "Enter a Valid STUN Port number:"
read stunprt
done

sed -i "s+#listening-port=.*+listening-port=$stunprt+g" "/etc/turnserver.conf"
sed -i "s+listening-port=.*+listening-port=$stunprt+g" "/etc/turnserver.conf"

fi
##############################################################################################
ps -ef | grep turnserver | grep -v grep | awk '{print $2}' | xargs kill
/usr/bin/turnserver --daemon -c /etc/turnserver.conf --pidfile /run/turnserver/turnserver.pid
fi