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dnsmasq: add support for set: and tag: pairs

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On my network, I have a variety of machines and appliances, some of which need different configuration issues than the default options.

For example:

config host
	option name 'client'
	option mac '00:01:02:03:04:05'
	option ip '192.168.1.20'
	option tag 'acme'

config tag acme
	option force '1'
	list dhcp_option 'option:router,192.168.1.253'
	list dhcp_option 'option:domain-name,acme.com'
	list dhcp_option 'option:domain-search,acme.com,redfish-solutions.com'

which allows me to override the default router for my client's host, as well as its domain-name, and its domain-search.

this causes the following config lines:

dhcp-host=00:01:02:03:04:05,set:acme,192.168.1.20,client
dhcp-option-force=tag:acme,option:router,192.168.1.253
dhcp-option-force=tag:acme,option:domain-name,acme.com
dhcp-option-force=tag:acme,option:domain-search:acme.com,redfish-solutions.com

This could be useful elsewhere, for instance, if you have an IP CCTV that you don't want to have a default-route, etc.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

SVN-Revision: 31815
This commit is contained in:
Jo-Philipp Wich 2012-05-19 20:17:54 +00:00
parent 3eb1820532
commit 38cf8379b0
1 changed files with 21 additions and 2 deletions
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23
package/dnsmasq/files/dnsmasq.init
View file

@ -224,14 +224,32 @@ dhcp_host_add() {
config_get name "$cfg" name
config_get ip "$cfg" ip
[ -n "$ip" ] || [ -n "$name" ] || return 0
[ -n "$ip" -o -n "$name" ] || return 0
macs=""
config_get mac "$cfg" mac
for m in $mac; do append macs "$m" ","; done
[ -n "$macs" ] || return 0
xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${ip:+,$ip}${name:+,$name}"
config_get tag "$cfg" tag
xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
}
dhcp_tag_add() {
local cfg="$1"
tag="$cfg"
[ -n "$tag" ] || return 0
config_get_bool force "$cfg" force 0
[ "$force" = "0" ] && force=
config_get option "$cfg" dhcp_option
for o in $option; do
xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
done
}
dhcp_mac_add() {
@ -435,6 +453,7 @@ start() {
echo >> $CONFIGFILE
config_foreach dhcp_boot_add boot
config_foreach dhcp_mac_add mac
config_foreach dhcp_tag_add tag
config_foreach dhcp_vendorclass_add vendorclass
config_foreach dhcp_userclass_add userclass
config_foreach dhcp_circuitid_add circuitid