openwrt/package/base-files/default/etc/init.d/S50dnsmasq

   1 #!/bin/sh
   2 . /etc/functions.sh
   3 . /etc/network.overrides
   4 [ -e /etc/config/network] && . /etc/config/network
   5
   6 # interface to use for DHCP
   7 iface=lan
   8
   9 ifname=$(nvram get ${iface}_ifname)
  10 ipaddr=$(nvram get ${iface}_ipaddr)
  11 netmask=$(nvram get ${iface}_netmask)
  12
  13 (
  14         # check for existing DHCP server
  15         udhcpc -n -q -R -s /dev/zero -i $ifname >&- || {
  16
  17           ipaddr=$(ip2int $ipaddr)
  18           netmask=$(ip2int ${netmask:-255.255.255.0})
  19           network=$((ipaddr&netmask))
  20
  21           start=$(nvram get dhcp_start)
  22           start=$((network+${start:-100}))
  23           end=$(nvram get dhcp_num)
  24           end=$((start+${end:-150}))
  25
  26           args="-l /tmp/dhcp.leases -K -F $(int2ip $start),$(int2ip $end),$(int2ip $netmask),12h"
  27         }
  28         dnsmasq ${args}
  29 ) &