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    #
    # rdiff-backup handler script for backupninja
    # requires rdiff-backup
    #
    
    
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    setsection source
    getconf type; sourcetype=$type
    getconf label
    
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    getconf user root; sourceuser=$user
    
    getconf keep 60
    
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    getconf include
    getconf exclude
    
    ### DESTINATION ###
    
    setsection dest
    getconf directory; destdir=$directory
    # strip trailing /
    destdir=${destdir%/}
    getconf type; desttype=$type
    getconf user; destuser=$user
    getconf host; desthost=$host
    
    [ "$destdir" != "" ] || fatal "Destination directory not set"
    [ "$desttype" == "remote" ] || fatal "Only remote destinations are supported"
    
    # see if we can login
    
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    debug "su $sourceuser -c \"ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'\""
    
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    if [ ! $test ]; then
    	result=`su $sourceuser -c "ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'" 2>&1`
    	if [ "$result" != "1" ]; then
    		fatal "Can't connect to $desthost as $destuser."
    	fi
    fi
    
    # see that rdiff-backup has the same version as here
    
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    debug "su $sourceuser -c \"ssh $desthost -l $destuser '$RDIFFBACKUP -V'\""
    
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    if [ ! $test ]; then
    	remoteversion=`su $sourceuser -c "ssh $desthost -l $destuser '$RDIFFBACKUP -V'" 2>&1`
    	localversion=`$RDIFFBACKUP -V`
    	if [ "$remoteversion" != "$localversion" ]; then
    		fatal "rdiff-backup does not have the same version on this computer and the backup server."
    	fi
    fi
    
    execstr_serverpart="$destuser@$desthost::$destdir/$label"
    		
    ### SOURCE ###
    
    [ "$label" != "" ] || fatal "Source missing label"
    [ "$sourcetype" == "local" ] || fatal "Only local source type supported"
    [ "$include" != "" ] || fatal "No source includes specified"
    
    execstr_clientpart="/"
    	
    ## REMOVE OLD BACKUPS
    
    
    if [ "`echo $keep | tr -d 0-9`" == "" ]; then
    	keep="${keep}D"
    fi
    
    removestr="rdiff-backup --force --remove-older-than $keep "
    if [ "$desttype" == "remote" ]; then
    	removestr="${removestr}${destuser}@${desthost}::"
    fi
    removestr="${removestr}${destdir}/${label}";
    
    debug "su $sourceuser -c '$removestr'"
    if [ ! $test ]; then
    	output=`su $sourceuser -c "$removestr" 2>&1`
    	code=$?
    	if [ "$code" == "0" ]; then
    		debug $output
    		info "Removing backups older than $keep days succeeded."
    	else
    		warning $output
    		warning "Failed removing backups older than $keep."
    
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    	fi
    fi
    
    ## EXECUTE ##
    	
    
    execstr="$RDIFFBACKUP $options --print-statistics "
    
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    # TODO: order the includes and excludes
    
    # excludes
    for i in $exclude; do
    	str="${i//__star__/*}"
    	execstr="${execstr}--exclude '$str' "
    done
    	
    # includes 
    for i in $include; do
    	str="${i//__star__/*}"
    	execstr="${execstr}--include '$str' "
    done
    
    # exclude everything else
    execstr="${execstr}--exclude '/*' "
    		
    # include client-part and server-part
    execstr="${execstr}$execstr_clientpart $execstr_serverpart"
    
    
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    debug "su $sourceuser -c '$execstr'"
    
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    if [ ! $test ]; then
    	output=`su $sourceuser -c "$execstr" 2>&1`
    	code=$?
    	if [ "$code" == "0" ]; then
    
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    		debug $output
    		info "Successfully finished backing up source '$label'"
    
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    	else
    
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    		warning $output
    		warning "Failed backup up source '$label'"
    
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    	fi
    fi	
    
    return 0