1 files changed, 90 insertions, 0 deletions
diff --git a/certbot-dns-sakuracloud/certbot_dns_sakuracloud/_internal/dns_sakuracloud.py b/certbot-dns-sakuracloud/certbot_dns_sakuracloud/_internal/dns_sakuracloud.py
new file mode 100644
index 000000000..25042bfc6
--- /dev/null
+++ b/certbot-dns-sakuracloud/certbot_dns_sakuracloud/_internal/dns_sakuracloud.py
@@ -0,0 +1,90 @@
+"""DNS Authenticator for Sakura Cloud DNS."""
+import logging
+
+from lexicon.providers import sakuracloud
+import zope.interface
+
+from certbot import interfaces
+from certbot.plugins import dns_common
+from certbot.plugins import dns_common_lexicon
+
+logger = logging.getLogger(__name__)
+
+APIKEY_URL = "https://secure.sakura.ad.jp/cloud/#!/apikey/top/"
+
+
+@zope.interface.implementer(interfaces.IAuthenticator)
+@zope.interface.provider(interfaces.IPluginFactory)
+class Authenticator(dns_common.DNSAuthenticator):
+    """DNS Authenticator for Sakura Cloud DNS
+
+    This Authenticator uses the Sakura Cloud API to fulfill a dns-01 challenge.
+    """
+
+    description = 'Obtain certificates using a DNS TXT record ' + \
+                  '(if you are using Sakura Cloud 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=90)
+        add('credentials', help='Sakura Cloud credentials 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 Sakura Cloud API.'
+
+    def _setup_credentials(self):
+        self.credentials = self._configure_credentials(
+            'credentials',
+            'Sakura Cloud credentials file',
+            {
+                'api-token': \
+                    'API token for Sakura Cloud API obtained from {0}'.format(APIKEY_URL),
+                'api-secret': \
+                    'API secret for Sakura Cloud API obtained from {0}'.format(APIKEY_URL),
+            }
+        )
+
+    def _perform(self, domain, validation_name, validation):
+        self._get_sakuracloud_client().add_txt_record(
+            domain, validation_name, validation)
+
+    def _cleanup(self, domain, validation_name, validation):
+        self._get_sakuracloud_client().del_txt_record(
+            domain, validation_name, validation)
+
+    def _get_sakuracloud_client(self):
+        return _SakuraCloudLexiconClient(
+            self.credentials.conf('api-token'),
+            self.credentials.conf('api-secret'),
+            self.ttl
+        )
+
+
+class _SakuraCloudLexiconClient(dns_common_lexicon.LexiconClient):
+    """
+    Encapsulates all communication with the Sakura Cloud via Lexicon.
+    """
+
+    def __init__(self, api_token, api_secret, ttl):
+        super(_SakuraCloudLexiconClient, self).__init__()
+
+        config = dns_common_lexicon.build_lexicon_config('sakuracloud', {
+            'ttl': ttl,
+        }, {
+            'auth_token': api_token,
+            'auth_secret': api_secret,
+        })
+
+        self.provider = sakuracloud.Provider(config)
+
+    def _handle_http_error(self, e, domain_name):
+        if domain_name in str(e) and (str(e).startswith('404 Client Error: Not Found for url:')):
+            return None  # Expected errors when zone name guess is wrong
+        return super(_SakuraCloudLexiconClient, self)._handle_http_error(e, domain_name)