46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
|
#!/bin/sh
|
||
|
|
. /etc/config/network
|
||
|
|
|
||
|
|
# The following is to automatically configure the DHCP settings
|
||
|
|
# based on config settings. Feel free to replace all this crap
|
||
|
|
# with a simple "dnsmasq" and manage everything via the
|
||
|
|
# /etc/dnsmasq.conf config file
|
||
|
|
|
||
|
|
[ -f /etc/dnsmasq.conf ] || exit
|
||
|
|
|
||
|
|
args=""
|
||
|
|
iface=lan
|
||
|
|
eval "ifname=\${${iface}_ifname}"
|
||
|
|
|
||
|
|
dhcp_enable="${dhcp_enable:-1}"
|
||
|
|
dhcp_start="${dhcp_start:-100}"
|
||
|
|
dhcp_num="${dhcp_num:-50}"
|
||
|
|
dhcp_lease="${dhcp_lease:-12h}"
|
||
|
|
|
||
|
|
# if dhcp_enable is unset and there is a dhcp server on the network already, default to dhcp_enable=0
|
||
|
|
[ -z "$dhcp_enable" ] && udhcpc -n -q -R -s /bin/true -i $ifname >&- && dhcp_enable="${dhcp_enable:-0}"
|
||
|
|
|
||
|
|
# dhcp_enable=0 disables the dhcp server
|
||
|
|
(
|
||
|
|
[ -z "$dhcp_enable" -o "$dhcp_enable" -eq 1 ] && {
|
||
|
|
# no existing DHCP server?
|
||
|
|
|
||
|
|
# calculate settings
|
||
|
|
eval "ipaddr=\${${iface}_ipaddr}"
|
||
|
|
eval "netmask=\${${iface}_netmask}"
|
||
|
|
eval $(ipcalc $ipaddr $netmask ${dhcp_start:-100} ${dhcp_num:-150})
|
||
|
|
|
||
|
|
# and pass the args via config parser defines
|
||
|
|
echo "@define dhcp_enable 1"
|
||
|
|
echo "@define netmask $NETMASK"
|
||
|
|
echo "@define start $START"
|
||
|
|
echo "@define end $END"
|
||
|
|
echo "@define lease ${dhcp_lease:-12h}"
|
||
|
|
}
|
||
|
|
|
||
|
|
# ignore requests from wan interface
|
||
|
|
[ -z "$wan_proto" -o "$wan_proto" = "none" ] || echo "@define wan_ifname $wan_ifname"
|
||
|
|
|
||
|
|
cat /etc/dnsmasq.conf
|
||
|
|
) | awk -f /usr/lib/parse-config.awk | dnsmasq -C /proc/self/fd/0
|