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from octodns.provider.base import BaseProvider
import logging
import dns.zone
import dns.rdataclass
import dns.rdatatype
import os
class RdataParameterException(Exception):
def __init__(self, msg):
super().__init__(msg)
def _create_rdata( rdclass, rdtype, data ):
if isinstance(data,str):
if rdtype == 16: # TXT-Record
return dns.rdata.from_text(rdclass, rdtype, '"'+data+'"')
return dns.rdata.from_text(rdclass, rdtype, data)
cls = dns.rdata.get_rdata_class(rdclass, rdtype)
if rdtype == 257: # CAA-Record
data['tag'] = bytes(data['tag'], 'utf-8')
data['value'] = bytes(data['value'], 'utf-8')
if rdtype == 44: # SSHFP-Record
data['fp_type'] = data.pop('fingerprint_type')
data['fingerprint'] = bytes.fromhex(data['fingerprint'])
if rdtype == 52: # TLSA-Record
data['usage'] = data.pop('certificate_usage')
data['mtype'] = data.pop('matching_type')
data['cert'] = bytes.fromhex(data.pop('certificate_association_data'))
for slot in cls.__slots__:
if not slot in data:
raise RdataParameterException('{} is missing'.format(slot))
return cls(rdclass, rdtype, **data)
class ZoneFileProvider(BaseProvider):
SUPPORTS_MULTIVALUE_PTR = True
SUPPORTS_GEO = False
SUPPORTS = set(('A', 'AAAA', 'CAA', 'CNAME', 'MX', 'NS', 'PTR', 'SPF',
'SRV', 'SSHFP', 'TLSA', 'TXT'))
'''
SOA dict
{
mname
rname
serial
refresh
retry
expire
ttl
}
'''
def __init__(self, id, directory, soa, soa_ttl=3600, file_extension = '', support_root_ns = True):
'''
Arguments
=========
id: str
directory: str
soa: dict
extension: str
'''
self.log = logging.getLogger('ZoneFileProvider[{}]'.format(id))
self.log.debug('__init__: directory={}'.format(directory))
self.directory = directory
self.file_extension = file_extension
self.soa = soa
self.soa_ttl = soa_ttl
self.support_root_ns = support_root_ns
# OctoDNS does not recursively check dicts for 'env/' keyword
# TODO Error handling
serial = self.soa['serial']
if type(serial) == str and serial.startswith('env/'):
self.soa['serial'] = int(os.environ[ serial.split('/',1)[1] ])
super(ZoneFileProvider, self).__init__(id)
@property
def SUPPORTS_ROOT_NS(self):
return self.support_root_ns
def populate(self, zone, target=False, lenient=False):
if target:
return False
raise NotImplementedError(
"ZoneFileProvider only implements the target part." +
" Use OctoDns' own ZoneFileSource to read from ZoneFiles.")
def _apply(self, plan):
'''
Arguments
=========
plan: octodns.provider.plan.Plan
'''
zone = dns.zone.Zone(plan.desired.name)
soaset = dns.rdataset.Rdataset(
dns.rdataclass.IN, dns.rdatatype.SOA)
soaset.add(_create_rdata(
dns.rdataclass.IN,
dns.rdatatype.SOA,
self.soa), self.soa_ttl)
zone.replace_rdataset('@',soaset)
for record in plan.desired.records:
data = record.data
name = record.name
rdset = dns.rdataset.Rdataset(
dns.rdataclass.IN, dns.rdatatype.from_text(record._type))
if 'value' in data:
rdset.add(
_create_rdata(
dns.rdataclass.IN,
dns.rdatatype.from_text(record._type),
data['value']),
ttl=int(data['ttl']))
elif 'values' in data:
for value in data['values']:
rdset.add(
_create_rdata(
dns.rdataclass.IN,
dns.rdatatype.from_text(record._type),
value),
ttl=int(data['ttl']))
else:
self.log.warning(
"neither value nor values found in {}".format(name))
continue
zone.replace_rdataset(name, rdset)
zone.to_file(self.directory + '/' + plan.desired.name + self.file_extension)
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