#!/bin/bash

source /usr/lib/vserver/dhcp-functions


make_resolv_conf(){
	local VSERVER=$1
	eval `/usr/lib/vserver/printconf.sh --quote $1`

	if [ -n "$new_domain_name" ] || [ -n "$new_domain_name_servers" ] ; then
		if [ -f $VSERVERDIR/etc/resolv.conf ] ; then
			cp -fp $VSERVERDIR/etc/resolv.conf $VSERVERDIR/etc/resolv.conf.predhclient
		fi
		local rscf=`mktemp /tmp/XXXXXX`
		echo '; generated by /usr/lib/vserver/dhclient-script' > $rscf
		if [ -n "$new_domain_name" ]; then
			echo search $new_domain_name >> $rscf
		fi
		for nameserver in $new_domain_name_servers; do
			echo nameserver $nameserver >> $rscf
		done
		rm -f $VSERVERDIR/etc/resolv.conf
		cp -f $rscf $VSERVERDIR/etc/resolv.conf
		chmod 644 $VSERVERDIR/etc/resolv.conf 
	    rm -f $rscf
	fi
}


make_hosts(){
	local VSERVER=$1
	eval `/usr/lib/vserver/printconf.sh --quote $1`

	if [ -f $VSERVERDIR/etc/hosts ] ; then
		cp -fp $VSERVERDIR/etc/hosts $VSERVERDIR/etc/hosts.predhclient
	fi
	local rscf=`mktemp /tmp/XXXXXX`
	local tag="# inserted by /usr/lib/vserver/dhclient-script"
	local SHORT_S_HOSTNAME=`echo $S_HOSTNAME | sed s'/\..*//'`
	echo "$new_ip_address $S_HOSTNAME $SHORT_S_HOSTNAME localhost $tag" > $rscf
	grep -v "$tag" $VSERVERDIR/etc/hosts.predhclient >> $rscf
	rm -f $VSERVERDIR/etc/hosts
	cp -f $rscf $VSERVERDIR/etc/hosts
	chmod 644 $VSERVERDIR/etc/hosts
	rm -f $rscf
}



# echo dhclient: $reason >&2
# env
case $reason in
	BOUND|REBOOT)
		make_resolv_conf $VSERVER
		make_hosts $VSERVER
		_dhcp_create_info_file $interface $VSERVER $PREFIX
		;;
	RENEW|REBIND)
		if [ "$new_ip_address" != "$old_ip_address" ] ; then
			logger -t "vserver dhclient-script" "invoked for $reason ('$new_ip_address' != '$old_ip_address') on $interface:$PREFIX-$VSERVER"
			_dhcp_set_file_variables $interface $VSERVER $PREFIX
			rm -f $DHCP_INFO_FILE
		fi
		;;
	EXPIRE|FAIL|TIMEOUT)
		logger -t "vserver dhclient-script" "invoked for $reason on $interface:$PREFIX-$VSERVER"
		_dhcp_set_file_variables $interface $VSERVER $PREFIX
		rm -f $DHCP_INFO_FILE
		;;
esac