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nsupdate.py
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nsupdate.py
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#!/usr/bin/python
try:
import dns.update
import dns.query
import dns.tsigkeyring
import dns.message
import dns.resolver
HAVE_DNSPYTHON=True
except:
HAVE_DNSPYTHON=False
class Record(object):
def __init__(self, module):
self.module = module
self.state = module.params['state']
self.server = module.params['server']
self.zone = module.params['zone']
self.record = module.params['record']
self.type = module.params['type']
self.ttl = module.params['ttl']
self.value = module.params['value']
self.keyring = dns.tsigkeyring.from_text({
module.params['key_name'] : module.params['key_secret']
})
def create_record(self):
update = dns.update.Update(self.zone, keyring=self.keyring)
update.add(self.record, self.ttl, self.type, self.value)
try:
response = dns.query.tcp(update, self.server, timeout=10)
if dns.message.Message.rcode(response) == 0:
return True
else:
return False
except:
self.module.fail_json(msg='Connection to DNS server failed')
def modify_record(self):
update = dns.update.Update(self.zone, keyring=self.keyring)
update.replace(self.record, self.ttl, self.type, self.value)
try:
response = dns.query.tcp(update, self.server, timeout=10)
if dns.message.Message.rcode(response) == 0:
return True
else:
return False
except:
self.module.fail_json(msg='Connection to DNS server failed')
def remove_record(self):
update = dns.update.Update(self.zone, keyring=self.keyring)
update.delete(self.record, self.type)
try:
response = dns.query.tcp(update, self.server, timeout=10)
if dns.message.Message.rcode(response) == 0:
return True
else:
return False
except:
self.module.fail_json(msg='Connection to DNS server failed')
def record_exists(self):
update = dns.update.Update(self.zone, keyring=self.keyring)
update.present(self.record, self.type)
try:
response = dns.query.tcp(update, self.server, timeout=10)
if dns.message.Message.rcode(response) == 0:
update.present(self.record, self.type, self.value)
response = dns.query.tcp(update, self.server, timeout=10)
if dns.message.Message.rcode(response) == 0:
return True
else:
return 2
else:
return False
except:
self.module.fail_json(msg='Connection to DNS server failed')
def main():
module = AnsibleModule(
argument_spec = dict(
state=dict(required=False, default='present', choices=['present', 'absent'], type='str'),
server=dict(required=True, type='str'),
key_name=dict(required=True, type='str'),
key_secret=dict(required=True, type='str'),
zone=dict(required=True, type='str'),
record=dict(required=True, type='str'),
type=dict(required=False, default='A', choices=['A', 'CNAME'], type='str'),
ttl=dict(required=False, default=60, type='int'),
value=dict(required=False, default=None, type='str')
),
supports_check_mode=True
)
record = Record(module)
success = None
result = {}
result['server'] = record.server
result['zone'] = record.zone
result['record'] = record.record
result['type'] = record.type
result['ttl'] = record.ttl
result['value'] = record.value
result['state'] = record.state
if not HAVE_DNSPYTHON:
module.fail_json(msg='python library dnspython required: pip install dnspython')
exists = record.record_exists()
if record.state == 'absent':
if exists:
if module.check_mode:
module.exit_json(changed=True)
success = record.remove_record()
if success != True:
module.fail_json(msg='Failed to delete DNS record')
result['changed'] = True
elif record.state == 'present':
if not exists:
if module.check_mode:
module.exit_json(changed=True)
success = record.create_record()
result['changed'] = True
elif exists == 2:
success = record.modify_record()
result['changed'] = True
else:
result['changed'] = False
if success is not None and success != True:
module.fail_json(msg='Failed to update DNS record')
module.exit_json(**result)
# import module snippets
from ansible.module_utils.basic import *
main()