1 files changed, 109 insertions, 0 deletions
diff --git a/dhcpcd/dhcpcd-hooks/50-ntp.conf b/dhcpcd/dhcpcd-hooks/50-ntp.conf
new file mode 100644
index 00000000..c0781360
--- /dev/null
+++ b/dhcpcd/dhcpcd-hooks/50-ntp.conf
@@ -0,0 +1,109 @@
+# Sample dhcpcd hook script for ntp
+# Like our resolv.conf hook script, we store a database of ntp.conf files
+# and merge into /etc/ntp.conf
+
+# You can set the env var NTP_CONF to another file like this
+#   dhcpcd -e NTP_CONF=/usr/pkg/etc/ntpd.conf
+# or by adding this to /etc/dhcpcd.enter-hook
+#   NTP_CONF=/usr/pkg/etc/ntpd.conf
+# to use openntpd from pkgsrc instead of the system provided ntp.
+
+if type invoke-rc.d >/dev/null 2>&1; then
+	# Debian has a seperate file for DHCP config to avoid stamping on
+	# the master.
+	[ -e /var/lib/ntp ] || mkdir /var/lib/ntp
+	: ${ntp_service:=ntp}
+	: ${NTP_DHCP_CONF:=/var/lib/ntp/ntp.conf.dhcp}
+fi
+
+: ${ntp_service:=ntpd}
+: ${ntp_restart_cmd:=service_condcommand $ntp_service restart}
+ntp_conf_dir="$state_dir/ntp.conf"
+ntp_conf=${NTP_CONF:-/etc/ntp.conf}
+NL="
+"
+
+build_ntp_conf()
+{
+	local cf="$state_dir/ntp.conf.$ifname"
+	local interfaces= header= srvs= servers= x=
+
+	# Build a list of interfaces
+	interfaces=$(list_interfaces "$ntp_conf_dir")
+
+	if [ -n "$interfaces" ]; then
+		# Build the header
+		for x in ${interfaces}; do
+			header="$header${header:+, }$x"
+		done
+
+		# Build a server list
+		srvs=$(cd "$ntp_conf_dir";
+			key_get_value "server " $interfaces)
+		if [ -n "$srvs" ]; then
+			for x in $(uniqify $srvs); do
+				servers="${servers}server $x$NL"
+			done
+		fi
+	fi
+
+	# Merge our config into ntp.conf
+	[ -e "$cf" ] && rm -f "$cf"
+	[ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
+
+	if [ -n "$NTP_DHCP_CONF" ]; then
+		[ -e "$ntp_conf" ] && cp "$ntp_conf" "$cf"
+		ntp_conf="$NTP_DHCP_CONF"
+	elif [ -e "$ntp_conf" ]; then
+		remove_markers "$signature_base" "$signature_base_end" \
+			"$ntp_conf" > "$cf"
+	fi
+
+	if [ -n "$servers" ]; then
+		echo "$signature_base${header:+ $from }$header" >> "$cf"
+		printf %s "$servers" >> "$cf"
+		echo "$signature_base_end${header:+ $from }$header" >> "$cf"
+	else
+		[ -e "$ntp_conf" -a -e "$cf" ] || return
+	fi
+
+	# If we changed anything, restart ntpd
+	if change_file "$ntp_conf" "$cf"; then
+		[ -n "$ntp_restart_cmd" ] && eval $ntp_restart_cmd
+	fi
+}
+
+add_ntp_conf()
+{
+	local cf="$ntp_conf_dir/$ifname" x=
+
+	[ -e "$cf" ] && rm "$cf"
+	[ -d "$ntp_conf_dir" ] || mkdir -p "$ntp_conf_dir"
+	if [ -n "$new_ntp_servers" ]; then
+		for x in $new_ntp_servers; do
+			echo "server $x" >> "$cf"
+		done
+	fi
+	build_ntp_conf
+}
+
+remove_ntp_conf()
+{
+	if [ -e "$ntp_conf_dir/$ifname" ]; then
+		rm "$ntp_conf_dir/$ifname"
+	fi
+	build_ntp_conf
+}
+
+# For ease of use, map DHCP6 names onto our DHCP4 names
+case "$reason" in
+BOUND6|RENEW6|REBIND6|REBOOT6|INFORM6)
+	new_ntp_servers="$new_dhcp6_sntp_servers"
+;;
+esac
+
+if $if_up; then
+	add_ntp_conf add
+elif $if_down; then
+	remove_ntp_conf del
+fi