139 lines
4.7 KiB
Python
139 lines
4.7 KiB
Python
#
|
|
# Copyright (c) 2022 Pim van Pelt
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at:
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
import logging
|
|
import validator.interface as interface
|
|
import validator.lcp as lcp
|
|
import validator.address as address
|
|
|
|
def get_bridgedomains(yaml):
|
|
""" Return a list of all bridgedomains. """
|
|
ret = []
|
|
if not 'bridgedomains' in yaml:
|
|
return ret
|
|
for ifname, iface in yaml['bridgedomains'].items():
|
|
ret.append(ifname)
|
|
return ret
|
|
|
|
|
|
def get_by_name(yaml, ifname):
|
|
""" Return the BridgeDomain by name, if it exists. Return None,None otherwise. """
|
|
try:
|
|
if ifname in yaml['bridgedomains']:
|
|
return ifname, yaml['bridgedomains'][ifname]
|
|
except:
|
|
pass
|
|
return None, None
|
|
|
|
|
|
def is_bridgedomain(yaml, ifname):
|
|
""" Returns True if the name is an existing bridgedomain (ie bd[0-9]+). """
|
|
ifname, iface = get_by_name(yaml, ifname)
|
|
return not iface == None
|
|
|
|
|
|
def is_bvi(yaml, ifname):
|
|
""" Returns True if the interface name is an existing BVI. """
|
|
if not ifname.startswith("bvi"):
|
|
return False
|
|
idx = ifname[3:]
|
|
if not idx.isnumeric():
|
|
return False
|
|
bridgename, bridge = get_by_name(yaml, "bd%d" % (int(idx)))
|
|
if not bridge:
|
|
return False
|
|
|
|
## If the BridgeDomain has an 'lcp', then it has a Bridge Virtual Interface
|
|
if 'lcp' in bridge:
|
|
return True
|
|
return False
|
|
|
|
|
|
def get_bridge_interfaces(yaml):
|
|
""" Returns a list of all interfaces that are bridgedomain members """
|
|
|
|
ret = []
|
|
if not 'bridgedomains' in yaml:
|
|
return ret
|
|
|
|
for ifname, iface in yaml['bridgedomains'].items():
|
|
if 'interfaces' in iface:
|
|
ret.extend(iface['interfaces'])
|
|
|
|
return ret
|
|
|
|
def is_bridge_interface_unique(yaml, ifname):
|
|
""" Returns True if this interface is referenced in bridgedomains zero or one times """
|
|
|
|
ifs = get_bridge_interfaces(yaml)
|
|
return ifs.count(ifname) < 2
|
|
|
|
|
|
def is_bridge_interface(yaml, ifname):
|
|
""" Returns True if this interface is a member of a BridgeDomain """
|
|
|
|
return ifname in get_bridge_interfaces(yaml)
|
|
|
|
|
|
def validate_bridgedomains(yaml):
|
|
result = True
|
|
msgs = []
|
|
logger = logging.getLogger('vppcfg.validator')
|
|
logger.addHandler(logging.NullHandler())
|
|
|
|
if not 'bridgedomains' in yaml:
|
|
return result, msgs
|
|
|
|
for ifname, iface in yaml['bridgedomains'].items():
|
|
logger.debug("bridgedomain %s" % iface)
|
|
bd_mtu = 1500
|
|
if 'mtu' in iface:
|
|
bd_mtu = iface['mtu']
|
|
|
|
if 'addresses' in iface and not 'lcp' in iface:
|
|
msgs.append("bridgedomain %s has an address but no LCP" % ifname)
|
|
result = False
|
|
if 'lcp' in iface and not lcp.is_unique(yaml, iface['lcp']):
|
|
msgs.append("bridgedomain %s does not have a unique LCP name %s" % (ifname, iface['lcp']))
|
|
result = False
|
|
if 'addresses' in iface:
|
|
for a in iface['addresses']:
|
|
if not address.is_allowed(yaml, ifname, iface['addresses'], a):
|
|
msgs.append("bridgedomain %s IP address %s conflicts with another" % (ifname, a))
|
|
result = False
|
|
|
|
if 'interfaces' in iface:
|
|
for member in iface['interfaces']:
|
|
if (None, None) == interface.get_by_name(yaml, member):
|
|
msgs.append("bridgedomain %s member %s does not exist" % (ifname, member))
|
|
result = False
|
|
continue
|
|
|
|
if not is_bridge_interface_unique(yaml, member):
|
|
msgs.append("bridgedomain %s member %s is not unique" % (ifname, member))
|
|
result = False
|
|
|
|
if interface.has_lcp(yaml, member):
|
|
msgs.append("bridgedomain %s member %s has an LCP" % (ifname, member))
|
|
result = False
|
|
if interface.has_address(yaml, member):
|
|
msgs.append("bridgedomain %s member %s has an address" % (ifname, member))
|
|
result = False
|
|
member_mtu = interface.get_mtu(yaml, member)
|
|
if member_mtu != bd_mtu:
|
|
msgs.append("bridgedomain %s member %s has MTU %d, while bridge has %d" % (ifname, member, member_mtu, bd_mtu))
|
|
result = False
|
|
|
|
|
|
return result, msgs
|