#!/bin/sh

# self-extracting distribution packages

PBS_SERVER_HOME=/var/spool/torque
PBS_DEFAULT_FILE=${PBS_SERVER_HOME}/server_name
PBS_ENVIRON=${PBS_SERVER_HOME}/pbs_environment
export PBS_SERVER_HOME PBS_DEFAULT_FILE PBS_ENVIRON

prefix=
exec_prefix=
XPBS_DIR=${exec_prefix}/lib/xpbs
XPBSMON_DIR=${exec_prefix}/lib/xpbsmon
libdir=${exec_prefix}/lib
export XPBS_DIR XPBSMON_DIR

conffiles="$PBS_SERVER_HOME/sched_priv/sched_config
           $PBS_SERVER_HOME/sched_priv/resource_group
           $PBS_SERVER_HOME/sched_priv/holidays
           $PBS_SERVER_HOME/sched_priv/dedicated_time
           $PBS_ENVIRON
           $PBS_DEFAULT_FILE"

saveext=save.$$

SKIP=`awk '/^__ARCHIVE_FOLLOWS__/ { print NR + 1; exit 0; }' $0`

# set package defaults
install=0
listfiles=0
extract=0
user=0
group=0
chownfiles=1
saveconfs=1
destdir=/
verbose=0
postscript=1
vopt=""

usage() {
cat <<__EOF__
 $0: [--install] [--listfiles] [--extractfiles]
     [--destdir dir] [--nochown] [--overwriteconf]
     [--instuser user] [--instgroup group] [--verbose]
     [--nopostscript]
 Usually just use --install
__EOF__
}

# parse command line args
while test $# -gt 0 ;do
  case $1 in
    --install|-i) install=1;;
    --listfiles|-l) listfiles=1;;
    --extractfiles|-e) extract=1;;
    --destdir|-d) shift; destdir=$1/;;
    --nochown) chownfiles=0;;
    --overwriteconf) saveconfs=0;;
    --instuser) shift; user=$1;;
    --instgroup) shift; group=$1;;
    --nopostscript) postscript=0;;
    --verbose) verbose=1; vopt="v";;
    *) usage; exit 1;;
  esac
  shift
done
    
# user didn't specify an action
if test $extract -lt 1 -a $listfiles -lt 1 -a $install -lt 1;then
   usage
   exit 1
fi

# make sure any leading directories are created with world-readable perms
umask 022

#
# start doing real work
#

# extract the files in the tarball
if test $extract -gt 0;then

  # be sure to respect $destdir
  test $destdir = / && destdir=.
  if test -d $destdir;then
     echo "Extracting files into $destdir..."
  else
     echo "Unable to extract files: $destdir is not a directory" 1>&2
     exit 1
  fi

  sed -n $SKIP,\$p $0 | gzip -dc | (cd $destdir; tar x${vopt}f -)
  echo "Done."
fi

# just list the files in the tarball
if test $listfiles -gt 0;then
  sed -n $SKIP,\$p $0 | gzip -dc | tar t${vopt}f -
fi

# install the tarball
if test $install -gt 0;then
  if test -d $destdir;then
    echo ""
    echo "Installing TORQUE archive... "
    echo ""
  else
    echo "Unable to install archive: $destdir is not a directory" 1>&2
    exit 1
  fi

  # save any existing conf files
  if test $saveconfs -gt 0;then
    for a in $conffiles;do
      test -f $destdir$a && mv -f$vopt $destdir$a $destdir$a.$saveext
    done
  fi

  # take the archive portion of this file and pipe it to tar
  sed -n $SKIP,\$p $0 | gzip -dc | (cd $destdir; tar x${vopt}f - )

  # finallized files should be owned by root, not the package-builder
  if test $chownfiles -gt 0;then
    test $verbose -gt 0 && echo "setting file user and group ownerships"
    sed -n $SKIP,\$p $0 | gzip -dc | tar tf - | \
      while read line;do
         chown $user $destdir$line; chgrp $group $destdir$line
      done
  fi

  # restore the original conf files
  if test $saveconfs -gt 0;then
    for a in $conffiles;do
      test -f $destdir$a -a -f $destdir$a.$saveext && mv -f$vopt $destdir$a $destdir$a.new;
      test -f $destdir$a.$saveext && mv -f$vopt $destdir$a.$saveext $destdir$a
    done
  fi

  # run user-specified post-install script
  if test -f ${destdir}post-install;then
    if test $postscript -gt 0;then
      test $verbose -gt 0 && echo "Running ${destdir}post-install..."
      ( cd $destdir && ./post-install && rm -f ./post-install )
    else
      echo "Skipping ${destdir}post-install"
    fi
  fi
    
  echo "Done."
fi

exit 0

__ARCHIVE_FOLLOWS__