35 lines
1.0 KiB
Python
35 lines
1.0 KiB
Python
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"""
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Misc. DNS related code: query, dynamic update, etc.
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"""
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SERVER = '85.10.192.104' # ns1.thinkmo.de (master / dynamic upd server for nsupdate.info)
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BASEDOMAIN = 'nsupdate.info'
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NONEXISTING_HOST = 'nonexisting.' + BASEDOMAIN
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WWW_HOST = 'www.' + BASEDOMAIN
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WWW_IPV4_HOST = 'www.ipv4.' + BASEDOMAIN
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WWW_IPV6_HOST = 'www.ipv6.' + BASEDOMAIN
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WWW_IPV4_IP = '178.32.221.14'
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WWW_IPV6_IP = '2001:41d0:8:e00e::1'
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import dns.name
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import dns.resolver
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def query_ns(qname, rdtype):
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"""
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query a dns name from our master server
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:param qname: the query name
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:type qname: dns.name.Name object or str
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:param rdtype: the query type
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:type rdtype: int or str
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:return: IP (as str)
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"""
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resolver = dns.resolver.Resolver(configure=False)
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# we do not configure it from resolv.conf, but patch in the values we
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# want into the documented attributes:
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resolver.nameservers = [SERVER, ]
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resolver.search = [dns.name.from_text(BASEDOMAIN), ]
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answer = resolver.query(qname, rdtype)
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return str(list(answer)[0])
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