openwrt/package/base-files/default/usr/share/udhcpc/default.script

   1 #!/bin/sh
   2 [ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1
   3 . /etc/config/network
   4
   5 RESOLV_CONF="/tmp/resolv.conf"
   6
   7 hotplug_event() {
   8         for ifname in lan wan wifi ${ifnames}; do
   9                 eval "proto=\"\${${ifname}_proto}\""
  10                 eval "if=\"\${${ifname}_ifname}\""
  11                 [ "$proto" = "dhcp" ] || continue
  12                 [ "$if" = "$interface" ] || continue
  13                 env -i ACTION="$1" INTERFACE="$ifname" PROTO=dhcp /sbin/hotplug iface
  14         done
  15 }
  16
  17 case "$1" in
  18         deconfig)
  19                 ifconfig $interface 0.0.0.0
  20                 hotplug_event ifdown
  21         ;;
  22         renew|bound)
  23                 ifconfig $interface $ip \
  24                 netmask ${subnet:-255.255.255.0} \
  25                 broadcast ${broadcast:-+}
  26
  27                 if [ -n "$router" ] ; then
  28                         echo "deleting routers"
  29                         while route del default gw 0.0.0.0 dev $interface >&- 2>&- ; do :; done
  30
  31                         for i in $router ; do
  32                                 echo "adding router $i"
  33                                 route add default gw $i dev $interface
  34                         done
  35                 fi
  36
  37                 echo -n > $RESOLV_CONF
  38                 ${domain:+echo search $domain} >> $RESOLV_CONF
  39                 for i in $dns ; do
  40                         echo "adding dns $i"
  41                         echo "nameserver $i" >> $RESOLV_CONF
  42                 done
  43
  44                 hotplug_event ifup
  45
  46                 # user rules
  47                 [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user
  48         ;;
  49 esac
  50
  51 exit 0