#!/bin/sh
#
# Create RAM-fs and start HAVP HTTP AV proxy
#
# Specify paths to binaries and configuration files

HAVP="/usr/local/sbin/havp" #Can also use `which havp` on most UNIX's
CONF="/usr/local/etc/havp/havp.config" #Change if config is someplace else
SWITCHBIN="-c" #HAVP conf options
SWITCHMNT="-t ext3 -o mand" #Mount options
MNTDIR="/mnt/memory/clamav" #The TEMPDIR in havp.config
USER="clamav" #We use clamav's UID/GID for HAVP and all installed AV scannners
USERID="210" #Look in /etc/passwd for the USER listed above

# Create ext3 FS in RAM assuming lilo loads RAM disks. See http://www.vanemery.com/Linux/Ramdisk/ramdisk.html
# Why ram0?
# RedHat lists 19 but only the first 15 work.
# ls -l /dev/ram* - Slackware loads 15 RAMdisks. The first will do just fine.

# Check if HAVP binary and config files exist
if [ ! -x $HAVP ]; then
    echo "HAVP binary not found or not executable!"
    echo "Cannot start, exiting.."
    exit 1
fi

if [ ! -f $CONF ]; then
echo "HAVP config file missing..  exiting!"
     exit 1
fi

havp_start() {
/usr/bin/pgrep -U $USERID havp 2>/dev/null
if [ $? = 1 ]; then
  /sbin/umount $MNTDIR 2>/dev/null # Just in case this script is not run on boot
  /sbin/mkfs.ext3 -q /dev/ram0
  /usr/bin/sleep 2 # Give it a few to settle down.
  /sbin/mount $SWITCHMNT /dev/ram0 $MNTDIR 2>/dev/null
  /usr/bin/chown -R $USER:$USER /mnt/memory # chown a dir up to remove any permission issues. strace to debug mkdir errors
  /usr/bin/chown -R $USER:$USER  /var/run/havp # check havp.config for PIDFILE
  $HAVP $SWITCHBIN $CONF
else
  echo "HAVP is already running."
  exit 1
fi
}

havp_stop() {
/usr/bin/pkill -U $USERID havp
/sbin/umount $MNTDIR 2>/dev/null # Unmount HAVP's TEMPDIR
if [ $? = 1 ]; then
    echo "HAVP is not running."
else
    echo "Stopping HAVP."
fi
}

havp_restart() {
  havp_stop
  /usr/bin/sleep 5
  havp_start
}

case "$1" in
'start')
  havp_start
  ;;
'stop')
  havp_stop
  ;;
'restart')
  havp_restart
  ;;
*)
  echo "usage $0 start|stop|restart"
esac
#EOF

case "$1" in
        start)
                /bin/mount | grep -v grep |grep man >/dev/null 2>&1
                result=$?
                echo "Starting HAVP ..."
                if [ ! -f $HAVP_BIN ]; then
                        echo -n "Error: $HAVP_BIN not found"
                        exit 5
                elif [ -e $PIDFILE ]; then
                        echo -e "Error: HAVP already running!"
                        exit 5

                 elif [ ! $result = 0 ]; then
                        echo -e "Creating File System and starting HAVP ..."
                        /sbin/mkfs.ext3 /dev/sdb6
                        sleep 2
                        `mount /dev/sdb6 /var/tmp/havp -o mand`
                        `chown -R clamav:clamav/var/tmp/havp/`
                        $HAVP_BIN -c $HAVP_CONFIG
                        exit $?

                elif [ ! $result = 0 ]; then
                    echo "Mounting HAVP-Filesystem and starting HAVP ..."
                    `mount /dev/sdb6 /var/tmp/havp -o mand`
                    `chown -R clamav:clamav/var/tmp/havp/`
                    $HAVP_BIN -c $HAVP_CONFIG
                    exit $?
                fi
                    echo -e "Filesystem already mounted ... starting HAVP"
                    $HAVP_BIN -c $HAVP_CONFIG
                    exit $?
                ;;