PRG-py_dnspython

dnspython

$ pip install dnspython

$ pip install dnspython3

zone fileが/path/to/example.zone とすると

ゾーンファイルを表示するプログラム

import dns
from dns import (zone, rdataclass, rdatatype)

zone_example = zone.from_file("/path/to/example.zone")

print("Origin: {}".format(zone_example.origin))

for name, node in zone_example.nodes.items():
   for rdataset in node.rdatasets:
       for rdata in rdataset:
           print("{}: {} {} {}".format(name,
                                       rdataclass.to_text(rdataset.rdclass),
                                       rdatatype.to_text(rdataset.rdtype),
                                       rdataset.ttl))

           rdata_property_names = set(dir(rdata)) - set(dir(dns.rdata.Rdata))

           for property_name in rdata_property_names:
               if not property_name.startswith("_"):
                   print("    {}: {}".format(property_name,
                                             getattr(rdata, property_name)))

表示サンプル

node_gateway = zone_example.find_node("gateway")
rdataset_gateway_a = zone_example.find_rdataset("gateway", "A")
rrset_gateway_a = zone_example.find_rrset("gateway", "A")

print(node_gateway)
print(node_gateway.rdatasets)
print(rdataset_gateway_a.__repr__(),
     rdataset_gateway_a,
     hasattr(rdataset_gateway_a, "name"))
print(rrset_gateway_a.__repr__(),
     rrset_gateway_a,
     hasattr(rrset_gateway_a, "name"))