diff options
author | drebs <drebs@leap.se> | 2012-11-29 10:56:49 -0200 |
---|---|---|
committer | drebs <drebs@leap.se> | 2012-11-29 10:56:49 -0200 |
commit | 17ccbcb831044c29f521b529f5aa96dc2a3cd18f (patch) | |
tree | f8d1144f83f3b1d33fe246887b316029b75195ec /src/leap/soledad/u1db/remote/basic_auth_middleware.py | |
parent | 0f1f9474e7ea6b52dc3ae18444cfaaca56ff3070 (diff) |
add u1db code (not as submodule)
Diffstat (limited to 'src/leap/soledad/u1db/remote/basic_auth_middleware.py')
-rw-r--r-- | src/leap/soledad/u1db/remote/basic_auth_middleware.py | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/leap/soledad/u1db/remote/basic_auth_middleware.py b/src/leap/soledad/u1db/remote/basic_auth_middleware.py new file mode 100644 index 00000000..a2cbff62 --- /dev/null +++ b/src/leap/soledad/u1db/remote/basic_auth_middleware.py @@ -0,0 +1,68 @@ +# Copyright 2012 Canonical Ltd. +# +# This file is part of u1db. +# +# u1db is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License version 3 +# as published by the Free Software Foundation. +# +# u1db 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 Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with u1db. If not, see <http://www.gnu.org/licenses/>. +"""U1DB Basic Auth authorisation WSGI middleware.""" +import httplib +try: + import simplejson as json +except ImportError: + import json # noqa +from wsgiref.util import shift_path_info + + +class Unauthorized(Exception): + """User authorization failed.""" + + +class BasicAuthMiddleware(object): + """U1DB Basic Auth Authorisation WSGI middleware.""" + + def __init__(self, app, prefix): + self.app = app + self.prefix = prefix + + def _error(self, start_response, status, description, message=None): + start_response("%d %s" % (status, httplib.responses[status]), + [('content-type', 'application/json')]) + err = {"error": description} + if message: + err['message'] = message + return [json.dumps(err)] + + def __call__(self, environ, start_response): + if self.prefix and not environ['PATH_INFO'].startswith(self.prefix): + return self._error(start_response, 400, "bad request") + auth = environ.get('HTTP_AUTHORIZATION') + if not auth: + return self._error(start_response, 401, "unauthorized", + "Missing Basic Authentication.") + scheme, encoded = auth.split(None, 1) + if scheme.lower() != 'basic': + return self._error( + start_response, 401, "unauthorized", + "Missing Basic Authentication") + user, password = encoded.decode('base64').split(':', 1) + try: + self.verify_user(environ, user, password) + except Unauthorized: + return self._error( + start_response, 401, "unauthorized", + "Incorrect password or login.") + del environ['HTTP_AUTHORIZATION'] + shift_path_info(environ) + return self.app(environ, start_response) + + def verify_user(self, environ, username, password): + raise NotImplementedError(self.verify_user) |