53 lines
2.1 KiB
Python
53 lines
2.1 KiB
Python
# Copyright 2018 AT&T Intellectual Property. All other rights reserved.
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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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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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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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import re
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from drydock_provisioner.orchestrator.validations.validators import Validators
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class HostnameValidity(Validators):
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def __init__(self):
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super().__init__('Hostname Validity', 'DD3003')
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def run_validation(self, site_design, orchestrator=None):
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# Check FQDN length is <= 255 characters per RFC 1035
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node_list = site_design.baremetal_nodes or []
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invalid_nodes = [
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n for n in node_list if len(n.get_fqdn(site_design)) > 255
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]
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for n in invalid_nodes:
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msg = "FQDN %s is invalid, greater than 255 characters." % n.get_fqdn(
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site_design)
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self.report_error(
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msg, [n.doc_ref],
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"RFC 1035 requires full DNS names to be < 256 characters.")
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# Check each label in the domain name is <= 63 characters per RFC 1035
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# and only contains A-Z,a-z,0-9,-
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valid_label = re.compile('[a-z0-9-]{1,63}', flags=re.I)
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for n in node_list:
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domain_labels = n.get_fqdn(site_design).split('.')
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for l in domain_labels:
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if not valid_label.fullmatch(l):
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msg = "FQDN %s is invalid - label '%s' is invalid." % (
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n.get_fqdn(site_design), l)
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self.report_error(
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msg, [n.doc_ref],
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"RFC 1035 requires each label in a DNS name to be <= 63 characters and contain "
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"only A-Z, a-z, 0-9, and hyphens.")
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