Attachment 4157 Details for Bug 26058

Überarbeitet Vorlage /etc/network/interfaces

26058_network-interfaces (text/plain), 6.09 KB, created by Philipp Hahn on 2012-02-08 12:29 CET

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Creator: Philipp Hahn

Created: 2012-02-08 12:29 CET

Size: 6.09 KB

patch

obsolete

>@%@UCRWARNING=# @%@
>
>auto lo
>iface lo inet loopback
>@!@
>import collections
>import ipaddr
>import re
>
>try:
>	from univention.ipv4 import networkNumber
>except ImportError:
>	def splitDotted(ip):
>		quad = map(int, ip.split('.'))[:4]
>		while len(quad) < 4:
>			quad.append(0)
>		return quad
>	def joinDotted(ip):
>		return '%d.%d.%d.%d' % tuple(ip[0:4])
>	def networkNumber(dottedIp, dottedNetmask):
>		ip = splitDotted(dottedIp)
>		netmask = splitDotted(dottedNetmask)
>		network = map(lambda (i, n): i & n, zip(ip, netmask))
>		return joinDotted(network)
>
>RE_IFACE = re.compile('^interfaces/([^/]+)/((?:ipv6/([^/]+)/)?.*)$')
>interfaces = {}
>ipv6_interfaces = {}
>for key, value in configRegistry.items():
>	m = RE_IFACE.match(key)
>	if not m:
>		continue
>	iface, subkey, ipv6_name = m.groups()
>	interfaces.setdefault(iface, {})[subkey] = value
>	if ipv6_name:
>		ipv6_interfaces.setdefault(iface, set()).add(ipv6_name)
>
>def check_gateway(ip, netmask, gateway):
>	"""
>	Check if the 'ip' is in the same network as the 'gatewy'.
>
>	>>> check_gateway('1.2.3.4', '255.255.255.0', '1.2.3.1')
>	True
>	"""
>	if not gateway:
>		return False
>	return networkNumber(ip, netmask) == networkNumber(gateway, netmask)
>
>def auto(interface, start):
>	"""Print 'auto iface' statements only once."""
>	print
>	if not start:
>		return
>	if interface not in auto.printed_interfaces:
>		print 'auto %s' % interface
>		auto.printed_interfaces.add(interface)
>auto.printed_interfaces = set()
>
>gateway_found = False
>ifhandler = configRegistry.get('interfaces/handler', 'ifplugd')
>gateway = configRegistry.get('gateway')
>primary = configRegistry.get('interface/primary', 'eth0')
>
>for interface, settings in sorted(interfaces.items(), key=lambda (interface, settings): settings.get('order', interface)):
>	iface = interface.replace("_", ":")
>	address = settings.get('address')
>	start = configRegistry.is_true('interfaces/%s/start' % interface, True)
>	if settings.get('type') == 'dhcp':
>		if ifhandler == 'ifplugd' and configRegistry.is_true('interfaces/%s/ifplugd' % interface, True):
>			auto(iface, start)
>			print 'iface %s inet dhcp' % iface
>		elif ifhandler == 'networkmanager' and configRegistry.is_false('interfaces/%s/networkmanager' % interface, True):
>			auto(iface, start)
>			print 'iface %s inet dhcp' % iface
>		else:
>			continue
>	if settings.get('type') == 'manual':
>		auto(iface, start)
>		print 'iface %s inet manual' % iface
>	elif address:
>		auto(iface, start)
>		print 'iface %s inet static' % iface
>		
>		print '\taddress %s' % address
>		network = settings.get('network')
>		if network:
>			print '\tnetwork %s' % network
>		netmask = settings.get('netmask')
>		if netmask:
>			print '\tnetmask %s' % netmask
>		broadcast = settings.get('broadcast')
>		if broadcast:
>			print '\tbroadcast %s' % broadcast
>		if address and netmask and gateway and not gateway_found:
>			if check_gateway(address, netmask, gateway):
>				print '\tgateway %s' % gateway
>				gateway_found = True
>	else:
>		continue
>
>	for key, value in settings.items():
>		if key.startswith('route/'):
>			if value.startswith('host ') or value.startswith('net '):
>				print '\tup ip route add -%s dev %s' % (value, interface)
>
>	for key, value in sorted(settings.items()):
>		if key.startswith('options/'):
>			print '\t%s' % (value,)
>	if interface == primary:
>		if settings.get('netmask', "") == "255.255.255.255" and gateway:
>			print "\tup ip route add %s/32 dev %s" % (gateway, primary)
>			print "\tup ip route add default via %s" % (gateway,)
>
>gateway_found = False
>gateway = configRegistry.get('ipv6/gateway')
>parsedGateway = None
>try:
>	if gateway:
>		parsedGateway = ipaddr.IPv6Address(gateway)
>except ValueError:
>	print '# WARNING: %r is not a valid IPv6 address! (from UCRV ipv6/gateway)' % (gateway, )
>
># UCRV format: interfaces/$DEVICE/ipv6/$NAME/{address,prefix}
>#                   0        1      2    3           4
># $NAME "default" is _the_ v6 address for the interface
>def sortDefaultFirst(x, y):
>	if x == y:
>		return 0
>	elif x == 'default':
>		return -1
>	elif y == 'default':
>		return 1
>	elif x < y:
>		return -1
>	elif x > y:
>		return 1
>
>for interface, names in ipv6_interfaces.items():
>	interface_addresses = []
>	used_interface_addresses = set()
>	settings = interfaces[interface]
>	start = configRegistry.is_true('interfaces/%s/start' % interface, True)
>	for name in sorted(names, sortDefaultFirst):
>		address = settings.get('ipv6/%s/address' % (name, ))
>		prefix = settings.get('ipv6/%s/prefix' % (name, ))
>		parsedAddress = None
>		parsedPrefix = None
>		try:
>			if address:
>				parsedAddress = ipaddr.IPv6Address(address)
>		except ValueError:
>			print '# WARNING: %r is not a valid IPv6 address! (from UCRV interfaces/%s/ipv6/%s/address)' % (address, interface, name, )
>		try:
>			if parsedAddress and prefix:
>				parsedPrefix = ipaddr.IPv6Network(address + '/' + prefix)
>		except ValueError:
>			print '# WARNING: %r is not a valid IPv6 prefix (should be integer 0-128)! (from UCRV interfaces/%s/ipv6/%s/prefix)' % (prefix, interface, name, )
>		if parsedAddress is not None and parsedPrefix is not None:
>			if parsedAddress in used_interface_addresses:
>				print '# WARNING: duplicate address %s for interface (from UCRV interfaces/%s/ipv6/%s/{address,prefix})' % (parsedAddress, interface, name, )
>				continue
>			interface_addresses.append((name, address, prefix, parsedPrefix, ))
>			used_interface_addresses.add(parsedAddress)
>	if interface_addresses:
>		auto(interface, start)
>		print 'iface %s inet6 static' % (interface, )
>		# check if gateway is local on this interface
>		if not gateway_found and parsedGateway:
>			if [True for (n, a, nm, parsedPrefix, ) in interface_addresses if parsedPrefix and parsedGateway in parsedPrefix]:
>				print '\tgateway %s' % gateway
>				gateway_found = True
>		((name, address, prefix, parsedPrefix, ), interface_addresses, ) = (interface_addresses[0], interface_addresses[1:], )
>		# first address is a special case
>		print '# %s' % (name, )
>		print '\taddress %s' % address
>		print '\tnetmask %s' % prefix
>		# rest via up/down commands
>		for (name, address, prefix, parsedPrefix, ) in interface_addresses:
>			print '# %s' % (name, )
>			print '\tup   ip addr add %s/%s dev %s' % (address, prefix, interface, )
>			print '\tdown ip addr del %s/%s dev %s' % (address, prefix, interface, )
>@!@

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Attachments on bug 26058: 4157 | 4611 | 4615