#!/bin/bash

function FETCH
{
	if [ -z "$SSH_KEY" ]; then
		echo -e "\t\t\tCONFIGURATION ERROR: no SSH key" >&2
		exit 1
	elif [ -z "$SSH_HOST" ]; then
		echo -e "\t\t\tCONFIGURATION ERROR: no destination SSH host" >&2
		exit 1
	fi

	local command="ssh -T"

	if [ "x$SSH_USER" != "x" ]; then
		command="$command -l $SSH_USER"
	fi

	if [ "x$SSH_PORT" != "x" ]; then
		command="$command -p $SSH_PORT"
	fi

	command="$command -i $SSH_KEY $SSH_HOST echo"

	local errorfile="`mktemp`"
	chmod 600 "$errorfile"

	{
		echo "$backup_directory"
		local index=
		for index in $( seq 0 $(( ${#backup_exclude[@]} - 1 )) ); do
			echo "${backup_exclude[$index]}"
		done
	} | eval $command 2>"$errorfile"

	local nerrfile=`mktemp`
	echo 0 > $nerrfile
	cat $errorfile | while read line; do
		if [[ "$line" =~ ^\.\.\.SRC\.\.\..*$ ]]; then
			local text="`echo "$line" | sed -e 's/^.........//'`"
			if [[ "$text" =~ ERROR ]]; then
				echo 1 > $nerrfile;
			fi
			printf "\t\t\t%s\n" "$text" >&2
		else
			echo -e "\t\t\tCONNECTION ERROR: SSH or the remote script caused errors:" >&2
			printf "\t\t\t\t%s\n" "$line" >&2
			echo 1 > $nerrfile
		fi
	done
	local rv="`cat $nerrfile`"
	rm -f "$nerrfile" "$errorfile"
	return $rv
}