#!/bin/bash
#Copyright 2002 William Stearns <wstearns@pobox.com>
#Released under the GPL.

RMVersion='0.2'
echo "Rsync mirror version $RMVersion" 

#--numeric-ids, -H, -v and -R can be added as additional params

ConfFile='/etc/rsync-mirror.conf'

until [ -z "$1" ]; do
	case "$1" in
	-c|-C)
		if [ -z "$2" ]; then
			echo Missing config file name, exiting >&2
			exit 1
		elif [ ! -e "$2" ]; then
			echo "Nonexistant config file \"$2\", exiting" >&2
			exit 1
		fi
		ConfFile="$2"
		shift 2	
		;;
	-r|-R)
		echo "Operating in reverse mode, source and destination fields will be swapped."
		Reverse="yes"
		shift
		;;
	*)
		echo "Unrecognized parameter \"$1\", exiting." >&2
		exit 1
		;;
	esac
done

if [ ! -r "$ConfFile" ]; then
	echo Missing or unreadable configuration file "$ConfFile".  Exiting.
	exit 1
fi

#Two less-thans is correct, really.
exec 5<&0 < <(cat "$ConfFile" | sed -e 's/#.*//' | grep -v '^$' )
while read Source Target AdditionalParams ; do
	if [ "$Reverse" = "yes" ]; then
		#FIXME - both source and dest need to be single (*/) directories or single files for reverse mode.
		Temp="$Source"
		Source="$Target"
		Target="$Temp"
	fi
	case "$Source" in
	*/)
		echo Mirroring directory "$Source" to "$Target"
		rsync -e ssh -a --delete --delete-after $AdditionalParams $Source $Target
		;;
	*)
		echo Mirroring "$Source" to "$Target"
		rsync -e ssh -a --delete --delete-after $AdditionalParams $Source $Target
		;;
	esac
done

exec 0<&5 5<&-