1 files changed, 120 insertions, 0 deletions
diff --git a/client/src/leap/soledad/client/_secrets/storage.py b/client/src/leap/soledad/client/_secrets/storage.py
new file mode 100644
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--- /dev/null
+++ b/client/src/leap/soledad/client/_secrets/storage.py
@@ -0,0 +1,120 @@
+# -*- coding: utf-8 -*-
+# _secrets/storage.py
+# Copyright (C) 2016 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import json
+import urlparse
+
+from hashlib import sha256
+
+from leap.soledad.common import SHARED_DB_NAME
+from leap.soledad.common.log import getLogger
+
+from leap.soledad.common.document import SoledadDocument
+from leap.soledad.client.shared_db import SoledadSharedDatabase
+from leap.soledad.client._secrets.util import emit, UserDataMixin
+
+
+logger = getLogger(__name__)
+
+
+class SecretsStorage(UserDataMixin):
+
+    def __init__(self, soledad):
+        self._soledad = soledad
+        self._shared_db = self._soledad.shared_db or self._init_shared_db()
+        self.__remote_doc = None
+
+    @property
+    def _creds(self):
+        uuid = self._soledad.uuid
+        token = self._soledad.token
+        return {'token': {'uuid': uuid, 'token': token}}
+
+    #
+    # local storage
+    #
+
+    def load_local(self):
+        path = self._soledad.secrets_path
+        logger.info("trying to load secrets from disk: %s" % path)
+        try:
+            with open(path, 'r') as f:
+                encrypted = json.loads(f.read())
+            logger.info("secrets loaded successfully from disk")
+            return encrypted
+        except IOError:
+            logger.warn("secrets not found in disk")
+        return None
+
+    def save_local(self, encrypted):
+        path = self._soledad.secrets_path
+        json_data = json.dumps(encrypted)
+        with open(path, 'w') as f:
+            f.write(json_data)
+
+    #
+    # remote storage
+    #
+
+    def _init_shared_db(self):
+        url = urlparse.urljoin(self._soledad.server_url, SHARED_DB_NAME)
+        creds = self._creds
+        db = SoledadSharedDatabase.open_database(url, creds)
+        return db
+
+    def _remote_doc_id(self):
+        passphrase = self._soledad.passphrase.encode('utf8')
+        uuid = self._soledad.uuid
+        text = '%s%s' % (passphrase, uuid)
+        digest = sha256(text).hexdigest()
+        return digest
+
+    @property
+    def _remote_doc(self):
+        if not self.__remote_doc and self._shared_db:
+            doc = self._get_remote_doc()
+            self.__remote_doc = doc
+        return self.__remote_doc
+
+    @emit('downloading')
+    def _get_remote_doc(self):
+        logger.info('trying to load secrets from server...')
+        doc = self._shared_db.get_doc(self._remote_doc_id())
+        if doc:
+            logger.info('secrets loaded successfully from server')
+        else:
+            logger.warn('secrets not found in server')
+        return doc
+
+    def load_remote(self):
+        doc = self._remote_doc
+        if not doc:
+            return None
+        encrypted = doc.content
+        return encrypted
+
+    @emit('uploading')
+    def save_remote(self, encrypted):
+        doc = self._remote_doc
+        if not doc:
+            doc = SoledadDocument(doc_id=self._remote_doc_id())
+        doc.content = encrypted
+        db = self._shared_db
+        if not db:
+            logger.warn('no shared db found')
+            return
+        db.put_doc(doc)