package/netifd/files/usr/share/udhcpc/default.script

   1 #!/bin/sh
   2 [ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1
   3
   4 set_classless_routes() {
   5         local max=128
   6         local type
   7         while [ -n "$1" -a -n "$2" -a $max -gt 0 ]; do
   8                 [ ${1##*/} -eq 32 ] && type=host || type=net
   9                 echo "udhcpc: adding route for $type $1 via $2"
  10                 route add -$type "$1" gw "$2" dev "$interface"
  11                 max=$(($max-1))
  12                 shift 2
  13         done
  14 }
  15
  16 setup_interface() {
  17         echo "udhcpc: ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}"
  18         ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}
  19
  20         [ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "255.255.255.255" ] && {
  21                 echo "udhcpc: setting default routers: $router"
  22
  23                 local valid_gw=""
  24                 for i in $router ; do
  25                         route add default gw $i dev $interface
  26                         valid_gw="${valid_gw:+$valid_gw|}$i"
  27                 done
  28
  29                 eval $(route -n | awk '
  30                         /^0.0.0.0\W{9}('$valid_gw')\W/ {next}
  31                         /^0.0.0.0/ {print "route del -net "$1" gw "$2";"}
  32                 ')
  33         }
  34
  35         # CIDR STATIC ROUTES (rfc3442)
  36         [ -n "$staticroutes" ] && set_classless_routes $staticroutes
  37         [ -n "$msstaticroutes" ] && set_classless_routes $msstaticroutes
  38 }
  39
  40
  41 applied=
  42 case "$1" in
  43         deconfig)
  44                 ifconfig "$interface" 0.0.0.0
  45         ;;
  46         renew)
  47                 setup_interface update
  48         ;;
  49         bound)
  50                 setup_interface ifup
  51         ;;
  52 esac
  53
  54 # user rules
  55 [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user
  56
  57 exit 0