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# -*- coding: utf-8 -*-
# auth.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/>.
"""
Methods for token-based authentication.
These methods have to be included in all classes that extend HTTPClient so
they can do token-based auth requests to the Soledad server.
"""
from u1db.remote.http_client import HTTPClientBase
class TokenBasedAuth(object):
"""
Encapsulate token-auth methods for classes that inherit from
u1db.remote.http_client.HTTPClient.
"""
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
"""
self._creds = {'token': (uuid, token)}
def _sign_request(self, method, url_query, params):
"""
Return an authorization header to be included in the HTTP request, in
the form:
[('Authorization', 'Token <base64 encoded creds')]
@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
"""
if 'token' in self._creds:
uuid, token = self._creds['token']
auth = '%s:%s' % (uuid, token)
return [('Authorization', 'Token %s' % auth.encode('base64')[:-1])]
else:
return HTTPClientBase._sign_request(
self, method, url_query, params)
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