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"""DNS Authenticator for Linode."""
import logging
import zope.interface
from lexicon.providers import linode
from certbot import errors
from certbot import interfaces
from certbot.plugins import dns_common
from certbot.plugins import dns_common_lexicon
logger = logging.getLogger(__name__)
API_KEY_URL = 'https://manager.linode.com/profile/api'
@zope.interface.implementer(interfaces.IAuthenticator)
@zope.interface.provider(interfaces.IPluginFactory)
class Authenticator(dns_common.DNSAuthenticator):
"""DNS Authenticator for Linode
This Authenticator uses the Linode API to fulfill a dns-01 challenge.
"""
description = 'Obtain certs using a DNS TXT record (if you are using Linode for DNS).'
def __init__(self, *args, **kwargs):
super(Authenticator, self).__init__(*args, **kwargs)
self.credentials = None
@classmethod
def add_parser_arguments(cls, add): # pylint: disable=arguments-differ
super(Authenticator, cls).add_parser_arguments(add, default_propagation_seconds=960)
add('credentials', help='Linode credentials INI file.')
def more_info(self): # pylint: disable=missing-docstring,no-self-use
return 'This plugin configures a DNS TXT record to respond to a dns-01 challenge using ' + \
'the Linode API.'
def _setup_credentials(self):
self.credentials = self._configure_credentials(
'credentials',
'Linode credentials INI file',
{
'key': 'API key for Linode account, obtained from {0}'.format(API_KEY_URL)
}
)
def _perform(self, domain, validation_name, validation):
self._get_linode_client().add_txt_record(domain, validation_name, validation)
def _cleanup(self, domain, validation_name, validation):
self._get_linode_client().del_txt_record(domain, validation_name, validation)
def _get_linode_client(self):
return _LinodeLexiconClient(self.credentials.conf('key'))
class _LinodeLexiconClient(dns_common_lexicon.LexiconClient):
"""
Encapsulates all communication with the Linode API.
"""
def __init__(self, api_key):
super(_LinodeLexiconClient, self).__init__()
self.provider = linode.Provider({
'auth_token': api_key
})
def _handle_general_error(self, e, domain_name):
if not str(e).startswith('Domain not found'):
return errors.PluginError('Unexpected error determining zone identifier for {0}: {1}'
.format(domain_name, e))
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