#!/bin/sh

set -e

if [ $# -lt 2 -o $# -gt 3 ]
then
	echo >&2 \
'usage: grab-account <localuser> <shorthostname> [<remoteuser>]
creates an entry in /etc/sync-accounts, and runs sync-accounts
$Id: grab-account,v 1.2 1999-01-03 02:56:07 ian Exp $'
	exit 1
fi

lu="$1"
sh="$2"

if [ $# -gt 2 ]
then
	ru="$3"
else
	ru="$1"
fi

cf=/etc/sync-accounts

if perl -ne 'exit 1 if m/^\s*user\s+'$lu'\s/;' <$cf
then
	perl -pe '
		next unless m/^\s*host\s+'$sh'\s*$/...m/^host|^end/;
		next unless m/^\s*addhere\s*$/;
		next if $done++;
		print "user '$lu'".("'$lu'" eq "'$ru'" ? "" : " remote='$ru'")."\n"
			or die $!;
	 END {
		print(STDERR "\`addhere'\'' line not found\n"), $?=1 if !$? && !$done;
	 }
		' $cf >$cf.new
	mv -f $cf.new $cf
else
	echo "entry already exists in $cf, leaving alone"
fi

sync-accounts $sh