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#!/bin/sh## Name:         dyndnsup# Description:  Auto-update dynamic dns service# Version:      1.0# Author:       Jose V Beneyto, <joberui@eui.upv.es># Depends on:   netcat# checkdepends: check dependeciescheckdepends() {        for dep in netcat        do                which $dep >& /dev/null                if [ $? == 1 ]                then                        echo "$dep not found, please install it!" >&2                        exit 1                fi        done}# readconfig:readconfig() {        if [ -f $CONFIG_FILE ]        then                . $CONFIG_FILE                [ "$DYNDNS_SERVER" == "" ] && { echo "DYNDNS_SERVER variable not set!"; exit 1 }                [ "$DYNDNS_PROTOCOL" == "" ] && { echo "DYNDNS_PROTOCOL variable not set!"; exit 1 }                [ "$DYNDNS_HOSTNAME" == "" ] && { echo "DYNDNS_HOSTNAME variable not set!"; exit 1 }                [ "$DYNDNS_IF" == "" ] && { echo "DYNDNS_IF variable not set!"; exit 1 }        fi}# checkip:checkip() {        current_ip=`ifconfig $DYNDNS_IF | grep 'inet addr' | awk '{print $2}' | sed -e 's/.*://'`        last_ip=`cat /var/cache/dyndnsup.cache | grep 'ip' | sed 's/ip=//g'`        # TODO        # DYNDNS_IP=}# chech time:checktime(){        # TODO        # EXPIRED_TIME=}# update:update() {        DYNDNS_IP=$1        echo -ne "GET /nic/update?system=$DYNDNS_PROTOCOL&hostname=$DYNDNS_HOSTNAME&myip=$DYNDNS_IP" | netcat -vv $SERVER_DYNDNS 80}# config file# (you can edit this file to overwrite script variables)CONFIG_FILE="/etc/dyndnsup.conf"# edit script variables# (CONFIG_FILE overwrite them)DYNDNS_SERVER="members.dyndns.org"DYNDNS_PROTOCOL="dyndns2"DYNDNS_HOSTNAME="mikeux.dyndns.org"DYNDNS_IP=""DYNDNS_IF="eth0"checkdependsreadconfigcheckipchecktimeupdateexit 0# End of File