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

   1 #!/bin/sh
   2 [ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1
   3 . /etc/functions.sh
   4 include /lib/network
   5
   6 RESOLV_CONF="/tmp/resolv.conf.auto"
   7
   8 hotplug_event() {
   9         scan_interfaces
  10         config_load /var/state/network
  11         for ifc in $interfaces; do
  12                 config_get ifname $ifc ifname
  13                 [ "$ifname" = "$interface" ] || continue
  14
  15                 config_get proto $ifc proto
  16                 [ "$proto" = "dhcp" ] || continue
  17                 [ ifup = "$1" ] && {
  18                         uci set "/var/state/network.$ifc.ipaddr=$ip"
  19                         uci set "/var/state/network.$ifc.netmask=${subnet:-255.255.255.0}"
  20                         uci set "/var/state/network.$ifc.dnsdomain=$domain"
  21                         uci set "/var/state/network.$ifc.dns=$dns"
  22                         uci set "/var/state/network.$ifc.gateway=$router"
  23                 }
  24                 env -i ACTION="$1" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
  25         done
  26 }
  27
  28 case "$1" in
  29         deconfig)
  30                 ifconfig $interface 0.0.0.0
  31                 hotplug_event ifdown
  32         ;;
  33         renew|bound)
  34                 ifconfig $interface $ip \
  35                 netmask ${subnet:-255.255.255.0} \
  36                 broadcast ${broadcast:-+}
  37
  38                 [ -n "$router" ] && {
  39                         for i in $router ; do
  40                                 echo "adding router $i"
  41                                 route add default gw $i dev $interface
  42                                 valid="$valid|$i"
  43
  44                         done
  45
  46                         echo "deleting old routes"
  47                         $(route -n | awk '/^0.0.0.0\W{9}('$valid')\W/ {next} /^0.0.0.0/ {print "route del -net "$1" gw "$2";"}')
  48                 }
  49
  50                 [ -n "$dns" ] && {
  51                         echo -n > "${RESOLV_CONF}.tmp"
  52                         ${domain:+echo search $domain} >> "${RESOLV_CONF}.tmp"
  53                         for i in $dns ; do
  54                                 echo "adding dns $i"
  55                                 echo "nameserver $i" >> "${RESOLV_CONF}.tmp"
  56                         done
  57                         mv "${RESOLV_CONF}.tmp" "$RESOLV_CONF"
  58                 }
  59
  60                 hotplug_event ifup
  61
  62                 # user rules
  63                 [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user
  64         ;;
  65 esac
  66
  67 exit 0