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-rw-r--r--src/leap/soledad/shared_db.py138
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diff --git a/src/leap/soledad/shared_db.py b/src/leap/soledad/shared_db.py
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-# -*- coding: utf-8 -*-
-# shared_db.py
-# Copyright (C) 2013 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/>.
-
-
-"""
-A shared database for storing/retrieving encrypted key material.
-"""
-
-import simplejson as json
-
-
-from u1db.remote import http_database
-
-
-from leap.soledad.auth import TokenBasedAuth
-
-
-#-----------------------------------------------------------------------------
-# Soledad shared database
-#-----------------------------------------------------------------------------
-
-class NoTokenForAuth(Exception):
- """
- No token was found for token-based authentication.
- """
-
-
-class Unauthorized(Exception):
- """
- User does not have authorization to perform task.
- """
-
-
-class SoledadSharedDatabase(http_database.HTTPDatabase, TokenBasedAuth):
- """
- This is a shared recovery database that enables users to store their
- encryption secrets in the server and retrieve them afterwards.
- """
- # TODO: prevent client from messing with the shared DB.
- # TODO: define and document API.
-
- #
- # Token auth methods.
- #
-
- def set_token_credentials(self, uuid, token):
- """
- Store given credentials so we can sign the request later.
-
- @param uuid: The user's uuid.
- @type uuid: str
- @param token: The authentication token.
- @type token: str
- """
- TokenBasedAuth.set_token_credentials(self, uuid, token)
-
- def _sign_request(self, method, url_query, params):
- """
- Return an authorization header to be included in the HTTP request.
-
- @param method: The HTTP method.
- @type method: str
- @param url_query: The URL query string.
- @type url_query: str
- @param params: A list with encoded query parameters.
- @type param: list
-
- @return: The Authorization header.
- @rtype: list of tuple
- """
- return TokenBasedAuth._sign_request(self, method, url_query, params)
-
- #
- # Modified HTTPDatabase methods.
- #
-
- @staticmethod
- def open_database(url, create, creds=None):
- # TODO: users should not be able to create the shared database, so we
- # have to remove this from here in the future.
- """
- Open a Soledad shared database.
-
- @param url: URL of the remote database.
- @type url: str
- @param create: Should the database be created if it does not already
- exist?
- @type create: bool
- @param token: An authentication token for accessing the shared db.
- @type token: str
-
- @return: The shared database in the given url.
- @rtype: SoledadSharedDatabase
- """
- db = SoledadSharedDatabase(url, creds=creds)
- db.open(create)
- return db
-
- @staticmethod
- def delete_database(url):
- """
- Dummy method that prevents from deleting shared database.
-
- @raise: This will always raise an Unauthorized exception.
-
- @param url: The database URL.
- @type url: str
- """
- raise Unauthorized("Can't delete shared database.")
-
- def __init__(self, url, document_factory=None, creds=None):
- """
- Initialize database with auth token and encryption powers.
-
- @param url: URL of the remote database.
- @type url: str
- @param document_factory: A factory for U1BD documents.
- @type document_factory: u1db.Document
- @param creds: A tuple containing the authentication method and
- credentials.
- @type creds: tuple
- """
- http_database.HTTPDatabase.__init__(self, url, document_factory,
- creds)