#!/bin/sh

#Dieses Skript macht ein Lokales backup auf eine andere Festplatte

#BACKUP ... Destination, wohin die Daten gesendet werden sollen

#ROOT ... Source, welche Daten gesichert werden sollen. Ein Slash am Ende ist
#wichtig, da damit ausgedrückt wird: Kopiere den Inhalt und nicht den
#Ordner. (Beim Backup der root ist es egal)

A=`basename $0`

if [ "$1" = "--help" ]
then
	echo "$A erstellt automatisch ein Backup"
	echo
	echo "Usage: $A [--help --version]"
	echo
	echo "Options:"
	echo "   --help"
	echo "               Prints out this help and exit."
	echo "   --version"
	echo "               Prints out version and exit."
	echo "Examples:"
	echo "   $A          Backups contents of /etc/backup"
	echo
	echo "Error Codes:"
	echo "     0         backup was successful"
	echo "     n         n rsync commandos failed"
	echo "   100         Could not fsck device"
	echo "   101         Could not mount backup volume"
	echo
	echo "See Also:"
	echo "http://www.markus-raab.org/Howtos/Backup"
	exit 0
fi

if [ "$1" = "--version" ]
then
	echo "$A 1.2"
	echo
	echo "Copyright (c) Markus Raab <debian@markus-raab.org>"
	echo "This is free software; see the source for copying conditions.  There is NO"
	echo "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
	echo
	echo "Written by Markus Raab"
	exit 0
fi
	

. /etc/default/backup

$LOGGER $LOGOPT "Starte backup"

[ $DEVICE ] && $DEBUG umount $DEVICE

[ $DEVICE ] && 
{
	$DEBUG fsck.$FILESYSTEM $FSCKOPTS $DEVICE || 
	{
		$LOGGER $LOGOPT "Fehler beim fsck"
		exit 100
	}
}

[ $DEVICE ] && 
{
	$DEBUG mount -t $FILESYSTEM -o $FILEOPTIONS $DEVICE $BACKUPDIR ||
	{
		$LOGGER $LOGOPT "Fehler beim mounten"
		exit 101
	}
}

ERRORS=0
SUCCESS=0

for file in /etc/backup/*
do
	#unset temporary variables:
	
	# Dont make a rsync run (for scripts)
	DONTRUN=""
	# Subfolder of Backup
	BACKUP=""
	# Root of files to backup
	ROOT=""
	# here you can define your excludes or anything else
	EXCLUDE=""
	# Dont backup deleted files
	NODELETE=""
	
	# for internal use only:
	FINALDELETEDIR=""
	RESTOREDELETE=""
	
	source "$file"
	
	# scrip processed, dont run rsync!
	if [ "$DONTRUN" ]
	then
		continue
	fi
	
	if [ "$NODELETE" ]
	then
		RESTOREDELETE="$DELETE"
		DELETE=""
	elif [ "$DELETE" ]
	then
		#Wenn löschvorgang gewünscht!
		FINALDELETEDIR=$DELETEDIR/$BACKUP-$SUFFIX
		test -d $FINALDELETEDIR || $DEBUG mkdir -p $FINALDELETEDIR
	fi

	FINALBACKUPDIR=$BACKUPDIR/$BACKUP	
	test -d $FINALBACKUPDIR || $DEBUG mkdir -p $FINALBACKUPDIR
	
	if $DEBUG /usr/bin/rsync $OPTIONS $EXCLUDE $DELETE$FINALDELETEDIR $ROOT $FINALBACKUPDIR
	then
		SUCCESS=$((SUCCESS+1))
		$LOGGER $LOGOPT "Sucessfull backup $ROOT"
	else 
		ERRORS=$((ERRORS+1))
		$LOGGER $LOGOPT "Error [ $? ] $ROOT"
	fi

	if [ "$RESTOREDELETE" ]
	then
		DELETE="$RESTOREDELETE"
	fi
done

[ $DEVICE ] && $DEBUG umount $DEVICE

exit $ERRORS