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"""DNS Authenticator for OVH DNS."""
import logging
import zope.interface
from lexicon.providers import ovh
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__)
TOKEN_URL = 'https://eu.api.ovh.com/createToken/ or https://ca.api.ovh.com/createToken/'
@zope.interface.implementer(interfaces.IAuthenticator)
@zope.interface.provider(interfaces.IPluginFactory)
class Authenticator(dns_common.DNSAuthenticator):
"""DNS Authenticator for OVH
This Authenticator uses the OVH API to fulfill a dns-01 challenge.
"""
description = 'Obtain certificates using a DNS TXT record (if you are using OVH for DNS).'
ttl = 60
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=30)
add('credentials', help='OVH 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 OVH API.'
def _setup_credentials(self):
self.credentials = self._configure_credentials(
'credentials',
'OVH credentials INI file',
{
'endpoint': 'OVH API endpoint (ovh-eu or ovh-ca)',
'application-key': 'Application key for OVH API, obtained from {0}'
.format(TOKEN_URL),
'application-secret': 'Application secret for OVH API, obtained from {0}'
.format(TOKEN_URL),
'consumer-key': 'Consumer key for OVH API, obtained from {0}'
.format(TOKEN_URL),
}
)
def _perform(self, domain, validation_name, validation):
self._get_ovh_client().add_txt_record(domain, validation_name, validation)
def _cleanup(self, domain, validation_name, validation):
self._get_ovh_client().del_txt_record(domain, validation_name, validation)
def _get_ovh_client(self):
return _OVHLexiconClient(
self.credentials.conf('endpoint'),
self.credentials.conf('application-key'),
self.credentials.conf('application-secret'),
self.credentials.conf('consumer-key'),
self.ttl
)
class _OVHLexiconClient(dns_common_lexicon.LexiconClient):
"""
Encapsulates all communication with the OVH API via Lexicon.
"""
def __init__(self, endpoint, application_key, application_secret, consumer_key, ttl):
super(_OVHLexiconClient, self).__init__()
self.provider = ovh.Provider({
'auth_entrypoint': endpoint,
'auth_application_key': application_key,
'auth_application_secret': application_secret,
'auth_consumer_key': consumer_key,
'ttl': ttl,
})
def _handle_http_error(self, e, domain_name):
hint = None
if str(e).startswith('400 Client Error:'):
hint = 'Is your Application Secret value correct?'
if str(e).startswith('403 Client Error:'):
hint = 'Are your Application Key and Consumer Key values correct?'
return errors.PluginError('Error determining zone identifier for {0}: {1}.{2}'
.format(domain_name, e, ' ({0})'.format(hint) if hint else ''))
def _handle_general_error(self, e, domain_name):
if domain_name in str(e) and str(e).endswith('not found'):
return
super(_OVHLexiconClient, self)._handle_general_error(e, domain_name)
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