* Use server names sent by DHCP server if available (closes: #268328)

git-svn-id: svn://svn.debian.org/pkg-ntp/ntp/trunk@111 0070b5ef-2f16-0410-befa-9a02bd1d6ddb

1 files changed, 64 insertions, 0 deletions

diff --git a/debian/ntp.dhcp b/debian/ntp.dhcp
new file mode 100644
index 0000000..bf25d82
--- /dev/null
+++ b/debian/ntp.dhcp
@@ -0,0 +1,64 @@
+NTP_CONF=/etc/ntp.conf
+NTP_DHCP_CONF=/etc/ntp.conf.dhcp
+
+
+ntp_server_restart() {
+	invoke-rc.d ntp restart
+}
+
+
+ntp_servers_setup_remove() {
+	if [ ! -e $NTP_DHCP_CONF ]; then
+		return
+	fi
+	rm -f $NTP_DHCP_CONF
+	ntp_server_restart
+}
+
+
+ntp_servers_setup_add() {
+	if [ -e $NTP_DHCP_CONF ] && [ "$new_ntp_servers" = "$old_ntp_servers" ]; then
+		return
+	fi
+
+	if [ -z "$new_ntp_servers" ]; then
+		ntp_servers_setup_remove
+		return
+	fi
+
+	tmp=$(mktemp "$NTP_DHCP_CONF.XXXXXX") || return
+	chmod --reference=$NTP_CONF $tmp
+	chown --reference=$NTP_CONF $tmp
+
+	(
+	  echo "# This file was copied from $NTP_CONF with the server options changed"
+	  echo "# to reflect the information sent by the DHCP server.  Any changes made"
+	  echo "# here will be lost at the next DHCP event.  Edit $NTP_CONF instead."
+	  echo
+	  echo "# NTP server entries received from DHCP server"
+	  for server in $new_ntp_servers; do
+		echo "server $server iburst"
+	  done
+	  echo
+	  sed -r -e '/^ *(server|peer).*$/d' $NTP_CONF
+	) >>$tmp
+	
+	mv $tmp $NTP_DHCP_CONF
+
+	ntp_server_restart
+}
+
+
+ntp_servers_setup() {
+	case $reason in
+		BOUND|RENEW|REBIND|REBOOT)
+			ntp_servers_setup_add
+			;;
+		EXPIRE|FAIL)
+			ntp_servers_setup_remove
+			;;
+	esac
+}
+
+
+ntp_servers_setup