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@@ -0,0 +1,78 @@
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+#!/bin/sh
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+# Copyright (C) 2006-2014 OpenWrt.org
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+
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+. /lib/functions.sh
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+
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+unset SERVER
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+unset PORT
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+unset INTERVAL
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+unset COUNT
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+unset INTERFACE_GLOBAL
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+
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+NTPC=`which ntpclient`
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+
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+check_server() {
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+ local hostname
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+ local port
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+ local interface
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+ [ -n "$SERVER" ] && return
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+ config_get hostname $1 hostname
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+ config_get port $1 port
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+ config_get interface $1 interface
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+
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+ [ -z "$interface" ] && interface=$INTERFACE_GLOBAL
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+
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+ [ -n "$interface" ] && {
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+ # $INTERFACE is passed from hotplug event
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+ [ "$interface" = "$INTERFACE" ] || return
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+ }
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+
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+ [ -z "$hostname" ] && return
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+ $NTPC -c 1 -p ${port:-123} -i 2 -h $hostname > /dev/null && { SERVER=$hostname; PORT=${port:-123}; }
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+}
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+
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+set_drift() {
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+ config_get freq $1 freq
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+ [ -n "$freq" ] && adjtimex -f $freq >/dev/null
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+}
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+
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+start_ntpclient() {
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+ config_foreach set_drift ntpdrift
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+ config_foreach check_server ntpserver
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+ [ -z "$SERVER" ] && exit 0
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+ logger starting ntpclient
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+ $NTPC ${COUNT:+-c $COUNT} ${INTERVAL:+-i $INTERVAL} -s -l -D -p $PORT -h $SERVER 2> /dev/null
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+}
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+
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+stop_ntpclient() {
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+ logger stopping ntpclient
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+ killall ntpclient
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+}
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+
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+load_settings() {
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+ local interval
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+ local count
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+ local iface
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+
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+ config_get interval $1 interval
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+ config_get count $1 count
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+ config_get interface $1 interface
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+
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+ [ -n "$count" ] && COUNT=$count
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+ [ -n "$interval" ] && INTERVAL=$interval
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+ [ -n "$interface" ] && INTERFACE_GLOBAL=$interface
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+}
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+
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+config_load ntpclient
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+config_foreach load_settings ntpclient
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+
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+NTP_RUNNING=`ps | grep $NTPC | grep -v grep`
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+
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+case "${ACTION:-ifup}" in
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+ ifup)
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+ [ -z "$NTP_RUNNING" ] && start_ntpclient
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+ ;;
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+ ifdown)
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+ [ -n "$NTP_RUNNING" ] && stop_ntpclient
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+ ;;
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+esac
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