#!/bin/sh
#
#  check_mailscanner
#
#  $Id: check_mailscanner.tru64 1312 2002-12-26 23:55:35Z jkf $
#
#  Script to check whether mailscanner process is running, and
#  start it up if not.
#
#  Copyright (C) 2002  Julian Field, Nick Phillips
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#   The author, Julian Field, can be contacted by email at
#      Jules@JulianField.net
#   or by paper mail at
#      Julian Field
#      Dept of Electronics & Computer Science
#      University of Southampton
#      Southampton
#      SO17 1BJ
#      United Kingdom
#

# Check that the virus scanner is still running.
# Re-start it if necessary.
# This can also be used from the init script to
# start it in the first place.

process=mailscanner
virusdir=/usr/local/MailScanner/bin
config=/usr/local/MailScanner/etc/mailscanner.conf

# These seem to get put all over the shop...
PERL=/usr/bin/perl
AWK=/usr/bin/awk
GREP=/bin/grep

# ...but surely everyone has these in /bin?
PS=/bin/ps
UNAME=/bin/uname

if ( test -z "`$UNAME | $GREP BSD`" ) ; then
    # not BSD; everything else seems to do POSIX
    pid=`COLUMNS=500 $PS -ef | $GREP $virusdir'[ ]'$process | $AWK '{print $2}'`

else
    # (Open|Free|Net)BSD
    pid=`$PS -axww | $GREP '[ ]'$virusdir/$process | $AWK '{print $1}'`
fi

if [ "$pid" = "" ]; then
  # Restart it
  PATH=${virusdir}:$PATH
  echo Starting MailScanner...
  cd $virusdir
  $PERL -I$virusdir $process $config
else
  echo MailScanner running with pid $pid
fi