+#
+# $Id$
+#
"""network configuration"""
import sioc
import bwlimit
import logger
+import string
+import iptables
+import os
-def GetSlivers(data):
+def GetSlivers(plc, data):
+ InitNodeLimit(data)
+ InitI2(plc, data)
+ InitNAT(plc, data)
+
+def InitNodeLimit(data):
# query running network interfaces
devs = sioc.gifconf()
ips = dict(zip(devs.values(), devs.keys()))
for dev in devs:
macs[sioc.gifhwaddr(dev).lower()] = dev
- # XXX Exempt Internet2 destinations from node bwlimits
- # bwlimit.exempt_init('Internet2', internet2_ips)
for network in data['networks']:
# Get interface name preferably from MAC address, falling
# back on IP address.
- if macs.has_key(network['mac']):
+ if macs.has_key(network['mac'].lower()):
dev = macs[network['mac'].lower()]
elif ips.has_key(network['ip']):
dev = ips[network['ip']]
# some previously invalid sliver bwlimit is now valid
# again, or vice-versa.
+def InitI2(plc, data):
+ if "Internet2" in data['groups']:
+ logger.log("This is an Internet2 node. Setting rules.")
+ i2nodes = []
+ i2nodeids = plc.GetNodeGroups(["Internet2"])[0]['node_ids']
+ for node in plc.GetInterfaces({"node_id": i2nodeids}, ["ip"]):
+ # Get the IPs
+ i2nodes.append(node['ip'])
+ # this will create the set if it doesn't already exist
+ # and add IPs that don't exist in the set rather than
+ # just recreateing the set.
+ bwlimit.exempt_init('Internet2', i2nodes)
+
+ # set the iptables classification rule if it doesnt exist.
+ cmd = '-A POSTROUTING -m set --set Internet2 dst -j CLASSIFY --set-class 0001:2000 --add-mark'
+ rules = []
+ ipt = os.popen("/sbin/iptables-save")
+ for line in ipt.readlines(): rules.append(line.strip(" \n"))
+ ipt.close()
+ if cmd not in rules:
+ logger.verbose("net: Adding iptables rule for Internet2")
+ os.popen("/sbin/iptables -t mangle " + cmd)
+
+def InitNAT(plc, data):
+ # query running network interfaces
+ devs = sioc.gifconf()
+ ips = dict(zip(devs.values(), devs.keys()))
+ macs = {}
+ for dev in devs:
+ macs[sioc.gifhwaddr(dev).lower()] = dev
+
+ ipt = iptables.IPTables()
+ for network in data['networks']:
+ # Get interface name preferably from MAC address, falling
+ # back on IP address.
+ if macs.has_key(network['mac']):
+ dev = macs[network['mac'].lower()]
+ elif ips.has_key(network['ip']):
+ dev = ips[network['ip']]
+ else:
+ logger.log('%s: no such interface with address %s/%s' % (network['hostname'], network['ip'], network['mac']))
+ continue
+
+ try:
+ settings = plc.GetInterfaceSettings({'interface_setting_id': network['interface_setting_ids']})
+ except:
+ continue
+ # XXX arbitrary names
+ for setting in settings:
+ if setting['category'].upper() != 'FIREWALL':
+ continue
+ if setting['name'].upper() == 'EXTERNAL':
+ # Enable NAT for this interface
+ ipt.add_ext(dev)
+ elif setting['name'].upper() == 'INTERNAL':
+ ipt.add_int(dev)
+ elif setting['name'].upper() == 'PF': # XXX Uglier code is hard to find...
+ for pf in setting['value'].split("\n"):
+ fields = {}
+ for field in pf.split(","):
+ (key, val) = field.split("=", 2)
+ fields[key] = val
+ if 'new_dport' not in fields:
+ fields['new_dport'] = fields['dport']
+ if 'source' not in fields:
+ fields['source'] = "0.0.0.0/0"
+ ipt.add_pf(fields)
+ ipt.commit()
+
def start(options, config):
pass