service script for kcptun

kcptun.service

#!/bin/bash

BIN=/usr/local/bin/kcptun
TUNBASE=1000
CFG_PATH=/etc/kcptun
LOG_PATH=/var/log

do_clean_work() {
    for f in $(ls $CFG_PATH/*.enable); do
        pid=$(cat $f)
        echo kill $pid
        if [ -n "$pid" ]; then
            kill $pid
            echo > $f
        fi
    done
}

trap "do_clean_work; exit" HUP INT TERM EXIT

for f in $(ls $CFG_PATH/*.enable); do
    port=$(echo $(basename $f) | sed 's/\.enable//')
    logpath=$LOG_PATH"/kcptun."$port".log"
    let tunport=port+TUNBASE
    echo starting kcptun on port $port
    if [ -e $CFG_PATH/${port}.cfg ]; then
        extra_param=$(cat $CFG_PATH/${port}.cfg)
    else
        extra_param=
    fi
    $BIN -t "127.0.0.1:"$port -l ":"$tunport --log $logpath $extra_param &
    pid=$!
    echo $pid > $f
done

while true; do
    sleep 1
done