dropbear_hook

#!/usr/bin/ash

run_hook ()
{
  local line i address netmask gateway dns0 dns1 rootserver rootpath defaultrootpath defaultserver

  : > /ip_opts

  if [ -z "${ip}" -a -n "${nfsaddrs}" ]; then
    ip="${nfsaddrs}"
  fi

  if [ -n "${ip}" ]; then
    # setup network and save some values
    ipconfig "ip=${ip}" | while read line; do
      if [ "${line#"IP-Config:"}" != "${line}" ]; then
        continue
      fi

      line="$(echo ${line} | sed -e 's/ :/:/g;s/: /=/g')"

      for i in ${line}; do
        case "${i}" in
          address=*)
            echo "${i}" >> /ip_opts
          ;;
          netmask=*)
            echo "${i}" >> /ip_opts
          ;;
          gateway=*)
            echo "${i}" >> /ip_opts
          ;;
          dns0=*)
            echo "${i}" >> /ip_opts
          ;;
          dns1=*)
            echo "${i}" >> /ip_opts
          ;;
          rootserver=*)
            echo "${i}" >> /ip_opts
          ;;
          rootpath=*)
            echo "${i}" >> /ip_opts
          ;;
        esac
      done
    done

    echo "device=$(echo ${ip} | cut -d: -f6)" >> /ip_opts
  fi

  . /ip_opts

  echo "IP-Config: ${address}/${netmask}"
  echo "IP-Config: gw: ${gateway}    dns0: ${dns0}    dns1: ${dns1}"

  [ -d /dev/pts ] || mkdir -p /dev/pts
  mount -t devpts devpts /dev/pts

  echo "Starting dropbear"
  /usr/sbin/dropbear -E
}