bb57ed8e52
Returns True if there is at most one occurence of the ip_interface (an IPv4/IPv6 prefix+len) in the entire config. That said, we need the 'iface_addresses' because VPP is a bit fickle in this regard. IP addresses from the same prefix/len can be added to a given interface (ie 192.0.2.1/24 and 192.0.2.2/24), but other than that, any prefix can not occur as a more-specific or less-specific of any other interface. So, we will allow: - any ip_interface that is of equal network/len of existing one(s) _on the same interface_ And, we will reject - any ip_interface that is a more specific of any existing one - any ip_interface that is a less specific of any existing one Update unit tests to ensure ip_interfaces are allowed in all cases.
57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
#
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# Copyright (c) 2022 Pim van Pelt
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import logging
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import validator.lcp as lcp
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import validator.address as address
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class NullHandler(logging.Handler):
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def emit(self, record):
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pass
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def get_by_name(yaml, ifname):
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""" Return the loopback by name, if it exists. Return None otherwise. """
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try:
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if ifname in yaml['loopbacks']:
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return yaml['loopbacks'][ifname]
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except:
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pass
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return None
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def validate_loopbacks(yaml):
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result = True
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msgs = []
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logger = logging.getLogger('vppcfg.validator')
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logger.addHandler(NullHandler())
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if not 'loopbacks' in yaml:
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return result, msgs
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logger.debug("Validating loopbacks...")
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for ifname, iface in yaml['loopbacks'].items():
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logger.debug("loopback %s" % iface)
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if 'addresses' in iface and not 'lcp' in iface:
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msgs.append("loopback %s has an address but no LCP" % ifname)
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result = False
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if 'lcp' in iface and not lcp.is_unique(yaml, iface['lcp']):
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msgs.append("loopback %s does not have a unique LCP name %s" % (ifname, iface['lcp']))
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result = False
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if 'addresses' in iface:
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for a in iface['addresses']:
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if not address.is_allowed(yaml, ifname, iface['addresses'], a):
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msgs.append("loopback %s IP address %s is not allowed" % (ifname, a))
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result = False
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return result, msgs
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