34 lines
1.1 KiB
Python
34 lines
1.1 KiB
Python
#!/usr/bin/python
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# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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#
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# SPDX-License-Identifier: MPL-2.0
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, you can obtain one at https://mozilla.org/MPL/2.0/.
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#
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# See the COPYRIGHT file distributed with this work for additional
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# information regarding copyright ownership.
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# catzhash.py: generate the SHA-1 hash of a domain name in wire format.
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#
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# This can be used to determine the label to use in a catalog zone to
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# represent the specified zone. For example, the zone
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# "domain.example" can be represented in a catalog zone called
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# "catalog.example" by adding the following record:
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#
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# 5960775ba382e7a4e09263fc06e7c00569b6a05c.zones.catalog.example. \
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# IN PTR domain.example.
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#
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# The label "5960775ba382e7a4e09263fc06e7c00569b6a05c" is the output of
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# this script when run with the argument "domain.example".
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import sys
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import hashlib
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import dns.name
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if len(sys.argv) < 2:
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print("Usage: %s name" % sys.argv[0])
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NAME = dns.name.from_text(sys.argv[1]).to_wire()
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print(hashlib.sha1(NAME).hexdigest())
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