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Add function ipapython.dnsutil.related_to_auto_empty_zone()

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It allows to test if given DNS name is sub/super domain
of an automatic empty zone.

https://fedorahosted.org/freeipa/ticket/5710

Reviewed-By: Martin Basti <mbasti@redhat.com>
This commit is contained in:
Petr Spacek 2016-04-27 13:26:48 +02:00 committed by Martin Basti
parent a4da9a2378
commit c978ad5b42
1 changed files with 30 additions and 0 deletions
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30
ipapython/dnsutil.py
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@ -234,6 +234,36 @@ def inside_auto_empty_zone(name):
return False
def related_to_auto_empty_zone(name):
"""True if specified absolute name is a sub/superdomain of an automatic
empty zone.
DNS domain is a subdomain of itself so this function
returns True for zone apexes, too.
>>> related_to_auto_empty_zone(DNSName('.'))
True
>>> related_to_auto_empty_zone(DNSName('in-addr.arpa.'))
True
>>> related_to_auto_empty_zone(DNSName('10.in-addr.arpa.'))
True
>>> related_to_auto_empty_zone(DNSName('1.10.in-addr.arpa.'))
True
>>> related_to_auto_empty_zone(DNSName('unrelated.example.'))
False
>>> related_to_auto_empty_zone(DNSName('1.10.in-addr.arpa'))
Traceback (most recent call last):
...
AssertionError: ...
"""
assert_absolute_dnsname(name)
relations = {dns.name.NAMERELN_SUBDOMAIN,
dns.name.NAMERELN_EQUAL,
dns.name.NAMERELN_SUPERDOMAIN}
return any(name.fullcompare(aez)[0] in relations
for aez in EMPTY_ZONES)
def resolve_rrsets(fqdn, rdtypes):
"""
Get Resource Record sets for given FQDN.