daemon.sh

   1 #! /bin/sh
   2 # source: daemon.sh
   3 # Copyright Gerhard Rieger and contributors (see file CHANGES)
   4 # Published under the GNU General Public License V.2, see file COPYING
   5
   6 # This script assumes that you create group daemon1 and user daemon1 before.
   7 # they need only the right to exist (no login etc.)
   8
   9 # Note: this pid file mechanism is not robust!
  10
  11 # You will adapt these variables
  12 USER=daemon1
  13 GROUP=daemon1
  14 INIF=fwnonsec.domain.org
  15 OUTIF=fwsec.domain.org
  16 TARGET=w3.intra.domain.org
  17 INPORT=80
  18 DSTPORT=80
  19 #
  20 INOPTS="fork,setgid=$GROUP,setuid=$USER"
  21 OUTOPTS=
  22 PIDFILE=/var/run/socat-$INPORT.pid
  23 OPTS="-d -d -lm"        # notice to stderr, then to syslog
  24 SOCAT=/usr/local/bin/socat
  25
  26 if [ "$1" = "start" -o -z "$1" ]; then
  27
  28     $SOCAT $OPTS tcp-l:$INPORT,bind=$INIF,$INOPTS tcp:$TARGET:$DSTPORT,bind=$OUTIF,$OUTOPTS </dev/null &
  29     echo $! >$PIDFILE
  30
  31 elif [ "$1" = "stop" ]; then
  32
  33     /bin/kill $(/bin/cat $PIDFILE)
  34 fi