from common import *

def gen_dhcpd_conf(node):
	dhcpd_conf = gen_header('named.conf') + """
option domain-name "wLeiden.NET";

default-lease-time 7200;
max-lease-time 2592000;

ddns-update-style none;

# Hack for the WET11 
always-broadcast on;

option domain-name-servers %s;

""" % (showaddr(node.master_ip))
	
	for link in node.links:
		if link.type != 'public':
			continue;
		mask = int(link.mask)
		(network, broadcast) = decode_mask(link.ip, mask)
		if not link.__dict__.has_key('dhcp'):
			continue
		(range_begin, range_end) = link.dhcp.split('-')
		range_begin = node.master_ip - 1 + int(range_begin)
		range_end = node.master_ip - 1 + int(range_end)

		# bouw een string voor eventuele statische dhcp entries
		statics = []
		for static in link.dhcp_statics:
			statics.append("host %s{hardware ethernet %s; fixed-address %s;}" %
					(static.name, static.mac, static.addr))
		statics = "\n\t".join(statics)

		s = """\n#
#  %s %s
#
subnet %s netmask %s {
	authoritative;
	range  %s %s;
	option broadcast-address %s;
	option subnet-mask %s;
	option routers %s;
	%s
}""" % (link.iface.iface, link.desc, showaddr(network), showmask(mask),
		showaddr(range_begin), showaddr(range_end),
		showaddr(broadcast), showmask(mask), showaddr(link.ip), statics)
		dhcpd_conf = dhcpd_conf + s
	return dhcpd_conf

if __name__ == "__main__":
	nodes = xml_to_obj_hierarchy(sys.argv[1])
	ready_nodes_dtd_hierarchy(nodes)
	node = findnode(nodes, sys.argv[2])
	print gen_dhcpd_conf(node)