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#! /bin/sh
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# $Id$
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#*********************************************************************
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#
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# fai-class - determine all classes a host belongs to
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#
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# This script is part of FAI (Fully Automatic Installation)
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# (c) 2002 by Thomas Lange, lange@informatik.uni-koeln.de
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# Universitaet zu Koeln
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#
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#*********************************************************************
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# A copy of the GNU General Public License is available as
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# `/usr/share/common-licences/GPL' in the Debian GNU/Linux distribution
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# or on the World Wide Web at http://www.gnu.org/copyleft/gpl.html. You
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# can also obtain it by writing to the Free Software Foundation, Inc.,
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# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#*********************************************************************
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version="version 1.0.3, 07-dec-2002"
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# import variables: $LOGDIR $verbose $debug
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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verbosemsg() {
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# a very nice subroutine
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# write message if the verbose flag is set
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[ "$verbose" ] && echo "$0: $@"
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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debugmsg() {
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# a very nice subroutine
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# write message if the debug flag is set
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[ "$debug" ] && echo "$0: $@"
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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addclass() {
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# append classes to a file
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while read line ; do
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case $line in
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\#*) ;; # strip comments
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*) debugmsg "Adding class $line"
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for class in $line ; do
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echo $class >> $filename
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done
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esac
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done
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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usage() {
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ex=$1
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cat <<-EOF
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fai-class $version. Copyright (C) 2002 Thomas Lange
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Report bugs to <fai@informatik.uni-koeln.de>.
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Usage: fai-class [OPTION] DIRECTORY CLASSFILE
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Define classes using files and scripts in DIRECTORY
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Executes scripts in DIRECTORY starting with two digits.
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The standard output of these scripts are names of classes which
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are written to CLASSFILE.
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EOF
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exit $ex
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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testclass() {
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# test if some classes are define multiple times
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duplicate=`sort $classfile | uniq -dc`
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if [ -n "$duplicate" ]; then
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echo "$0 Following classes are defined multiple times: $duplicate"
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exit 2
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fi
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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fsetup() {
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# parse options, test and set some basic variables
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while getopts "dhvt:T" opt ; do
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case "$opt" in
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d) debug=1 ;;
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v) verbose=1 ;;
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h) usage 0 ;;
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T) ctest=1 ;;
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t) LOGDIR=$OPTARG; export LOGDIR ;;
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*) usage 1 ;;
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esac
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done
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shift `expr $OPTIND - 1`
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[ -z "$2" ] || [ -n "$3" ] && usage 1
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classdir=$1
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filename=$2
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if [ ! -d $classdir ]; then
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echo "$0: $classdir is not a directory."
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exit 99
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fi
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if [ -s $filename ]; then
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verbosemsg "$filename exists. Renaming to $filename.bak"
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mv $filename $filename.bak
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fi
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if [ -z "$LOGDIR" ]; then
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verbosemsg "Setting LOGDIR to default value /tmp/fai"
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LOGDIR=/tmp/fai; export LOGDIR
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fi
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HOSTNAME=`uname -n`; export HOSTNAME
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}
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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# main program
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fsetup "$@"
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verbosemsg "Defining classes."
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echo DEFAULT | addclass
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# alphabetical sort is important
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if [ "$debug" ]; then
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scripts=`cd $classdir ; ls [0-9][0-9]*`
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else
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scripts=`cd $classdir ; ls [0-9][0-9]* 2>/dev/null`
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fi
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debugmsg "Scripts found: $scripts"
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for f in $scripts ; do
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[ -f $classdir/$f ] || continue # skip sockets, pipes, symlinks
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debugmsg "File $f found."
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if [ ! -x $classdir/$f ]; then
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echo "File $f is not executable, so it's not used for defining classes."
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continue
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fi
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verbosemsg "Executing $classdir/$f."
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case $f in
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# *.pl) perl $f </dev/null | addclass ;;
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# *.sh) sh $f </dev/null | addclass ;;
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*.source)
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# this script can define $newclasses
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newclasses=
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. $classdir/$f
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echo $newclasses | addclass ;;
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*~|*.bak) echo "Skipping backup file $f" ;;
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*) $classdir/$f </dev/null | addclass ;;
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esac
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done
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# add all classes which are listed in a file with the hostname
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if [ -f "$HOSTNAME" ]; then
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verbosemsg "Using classes from file $HOSTNAME"
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cat $HOSTNAME | addclass
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fi
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# $LOGDIR should not be writable by everybody
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# scripts can also write additional classes to a file, if they
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# can't print them to stdout. Define these classes.
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if [ -f $LOGDIR/additional-classes ]; then
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cat $LOGDIR/additional-classes | addclass
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rm -f $LOGDIR/additional-classes
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# remove the file after it was used. Do not use the same file more than once.
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fi
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# now add the hostname (the only class in lowercase) and LAST to
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# the list of classes
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echo $HOSTNAME LAST | addclass
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# show all classes if verbose
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verbosemsg List of all classes: `cat $filename`
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[ "$ctest" ] && testclass
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exit 0
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