#!/bin/sh /etc/rc.common
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# Copyright (C) 2009 OpenWrt.org
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NAME='etherwake'
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START=60
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PROGRAM=''
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start()
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{
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local searchlist=''
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local section=''
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local value=''
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config_load "${NAME}"
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# check for available program
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config_get searchlist 'setup' 'pathes'
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PROGRAM=$(search_program "${searchlist}")
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[ -z "${PROGRAM}" ] && {
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echo "${initscript}: No ${NAME} program installed. Check: opkg list | grep ${NAME}"
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exit 1
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}
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# sudo
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config_get_bool value 'setup' 'sudo' '0'
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[ "${value}" -ne 0 ] && PROGRAM="sudo ${PROGRAM}"
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# interface
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config_get value 'setup' 'interface'
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[ -n "${value}" ] && append PROGRAM "-i ${value}"
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# broadcast
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config_get_bool value 'setup' 'broadcast' '0'
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[ "${value}" -ne 0 ] && append PROGRAM '-b'
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# wake up targets
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config_foreach etherwake_start target $*
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}
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etherwake_start()
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{
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local section="$1"
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shift
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local names="$*"
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local value=''
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local target=''
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if [ -z "${names}" ]
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then
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# check if boot target
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config_get_bool value "${section}" 'wakeonboot' '0'
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[ "${value}" -eq 0 ] && return 0
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# wake up target
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do_etherwake "${section}"
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return $?
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else
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# name
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config_get value "${section}" 'name'
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[ -z "${value}" ] && return 0
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for target in ${names}
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do
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[ "${value}" != "${target}" ] && continue
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# wake up target
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do_etherwake "${section}"
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return $?
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done
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fi
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}
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# execute etherwake command for target
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do_etherwake()
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{
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local section="$1"
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local value=''
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local password=''
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local args=''
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# password
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config_get value "${section}" 'password'
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[ -n "${value}" ] && {
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password=$(etherwake_password "${value}")
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append args "-p ${password}"
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}
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# mac address
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config_get value "${section}" 'mac'
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[ -z "${value}" ] && { echo "${initscript}: Target ${section} has no MAC address"; return 1; }
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append args "${value}"
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# name
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config_get value "${section}" 'name'
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[ -z "${value}" ] && value="{section}"
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# execute command
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echo "${initscript}: Waking up ${value} via ${PROGRAM}${args:+ ${args}}"
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${PROGRAM} ${args}
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return $?
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}
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# find first available program from searchlist
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search_program()
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{
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local searchlist="$1"
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local test=''
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local program=''
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for test in ${searchlist} ; do
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[ -x "${test}" ] && {
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program="${test}"
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break;
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}
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done
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[ -n "${program}" ] && echo "${program}"
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return
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}
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# prepare hex password
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etherwake_password()
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{
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local delimiter=':'
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local password=`echo "$1" | sed "s/../&${delimiter}/g"`
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echo "${password%${delimiter}}"
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return
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}
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