net/etherwake/files/etherwake.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2009 OpenWrt.org
   3
   4 NAME='etherwake'
   5 START=60
   6 PROGRAM=''
   7
   8 start()
   9 {
  10         local searchlist=''
  11         local section=''
  12         local value=''
  13
  14         config_load "${NAME}"
  15
  16         # check for available program
  17         config_get searchlist 'setup' 'pathes'
  18         PROGRAM=$(search_program "${searchlist}")
  19         [ -z "${PROGRAM}" ] && {
  20                 echo "${initscript}: No ${NAME} program installed. Check: opkg list | grep ${NAME}"
  21                 exit 1
  22         }
  23
  24         # sudo
  25         config_get_bool value 'setup' 'sudo' '0'
  26         [ "${value}" -ne 0 ] && PROGRAM="sudo ${PROGRAM}"
  27
  28         # interface
  29         config_get value 'setup' 'interface'
  30         [ -n "${value}" ] && append PROGRAM "-i ${value}"
  31
  32         # broadcast
  33         config_get_bool value 'setup' 'broadcast' '0'
  34         [ "${value}" -ne 0 ] && append PROGRAM '-b'
  35
  36         # wake up targets
  37         config_foreach etherwake_start target $*
  38 }
  39
  40 etherwake_start()
  41 {
  42         local section="$1"
  43         shift
  44
  45         local names="$*"
  46
  47         local value=''
  48         local target=''
  49
  50         if [ -z "${names}" ]
  51          then
  52                 # check if boot target
  53                 config_get_bool value "${section}" 'wakeonboot' '0'
  54                 [ "${value}" -eq 0 ] && return 0
  55
  56                 # wake up target
  57                 do_etherwake "${section}"
  58                 return $?
  59         else
  60                 # name
  61                 config_get value "${section}" 'name'
  62                 [ -z "${value}" ] && return 0
  63
  64                 for target in ${names}
  65                  do
  66                         [ "${value}" != "${target}" ] && continue
  67
  68                         # wake up target
  69                         do_etherwake "${section}"
  70                         return $?
  71                 done
  72         fi
  73 }
  74
  75 # execute etherwake command for target
  76 do_etherwake()
  77 {
  78         local section="$1"
  79         local value=''
  80         local password=''
  81         local args=''
  82
  83         # password
  84         config_get value "${section}" 'password'
  85         [ -n "${value}" ] && {
  86                 password=$(etherwake_password "${value}")
  87                 append args "-p ${password}"
  88         }
  89
  90         # mac address
  91         config_get value "${section}" 'mac'
  92         [ -z "${value}" ] && { echo "${initscript}: Target ${section} has no MAC address"; return 1; }
  93         append args "${value}"
  94
  95         # name
  96         config_get value "${section}" 'name'
  97         [ -z "${value}" ] && value="{section}"
  98
  99         # execute command
 100         echo "${initscript}: Waking up ${value} via ${PROGRAM}${args:+ ${args}}"
 101         ${PROGRAM} ${args}
 102         return $?
 103 }
 104
 105
 106 # find first available program from searchlist
 107 search_program()
 108 {
 109         local searchlist="$1"
 110         local test=''
 111         local program=''
 112
 113         for test in ${searchlist} ; do
 114                 [ -x "${test}" ] && {
 115                         program="${test}"
 116                         break;
 117                 }
 118         done
 119
 120         [ -n "${program}" ] && echo "${program}"
 121
 122         return
 123 }
 124
 125 # prepare hex password
 126 etherwake_password()
 127 {
 128         local delimiter=':'
 129         local password=`echo "$1" | sed "s/../&${delimiter}/g"`
 130         echo "${password%${delimiter}}"
 131         return
 132 }