modules/freifunk: setup config and cron jobs for rdate; sync time on boot

modules/freifunk/root/etc/config/freifunk

@@ -55,29 +55,28 @@ config defaults wifi_device
     option disabled  0
     option txpower   10
 
-
 config defaults wifi_iface
     option mode		adhoc
     option bssid    02:CA:FF:EE:BA:BE
     option sw_merge 1
 
-
 config defaults interface
     option netmask  255.0.0.0
     option dns      "88.198.178.18 141.54.1.1 212.204.49.83 208.67.220.220 208.67.222.222"
 
-
 config defaults alias
 	option netmask	255.255.255.0
 
-
 config defaults dhcp
 	option leasetime 30m
 
-
 config defaults olsr_interface
 	option Ip4Broadcast 255.255.255.255
 
+config defaults time
+	option rdate_servers "128.138.140.44 171.64.7.77 171.64.7.99 81.169.154.44 130.133.1.10"
+
+
 config community leipzig
 	option name "Freifunk Leipzig"
 	option homepage http://leipzig.freifunk.net

modules/freifunk/root/etc/init.d/freifunk

@@ -17,6 +17,10 @@ boot() {
 		echo "*/5 * * * *	/usr/sbin/ff_olsr_watchdog" >> /etc/crontabs/root
 	}
 
+	grep -q '/usr/sbin/ff_rdate' /etc/crontabs/root || {
+		echo "0 */4 * * *	/usr/sbin/ff_rdate >> /etc/crontabs/root
+	}
+
 	[ -f /etc/rc.local ] && . /etc/rc.local
 	[ -d /etc/rc.local.d ] && {
 		for file in /etc/rc.local.d/*; do
@@ -24,5 +28,5 @@ boot() {
 		done
 	}
 
-	/etc/init.d/cron restart
+	( /usr/sbin/ff_rdate; /etc/init.d/cron restart ) &
 }

modules/freifunk/root/usr/sbin/ff_rdate

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+uci_get_one() {
+	for var in "$@"; do
+		uci -P /var/state get "$var" 2>/dev/null && break
+	done
+}
+
+local servers=$(uci_get_one "network.wan.lease_timesrv" \
+	"system.time.rdate_servers" "freifunk.time.rdate_servers")
+
+if [ -n "$servers" ]; then
+	for server in $servers; do
+		rdate -s $server >/dev/null 2>/dev/null && \
+			logger -t rdate "Synced with $server" && break
+
+		logger -t rdate "Failed to sync with $server"
+	done
+else
+	logger -t rdate "No usable time server found"
+fi