114 lines
3.1 KiB
Python
114 lines
3.1 KiB
Python
# Copyright (C) 2011 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Utilities for reading OAuth 2.0 client secret files.
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A client_secrets.json file contains all the information needed to interact with
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an OAuth 2.0 protected service.
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"""
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__author__ = 'jcgregorio@google.com (Joe Gregorio)'
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try: # pragma: no cover
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import simplejson
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except ImportError: # pragma: no cover
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try:
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# Try to import from django, should work on App Engine
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from django.utils import simplejson
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except ImportError:
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# Should work for Python2.6 and higher.
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import json as simplejson
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# Properties that make a client_secrets.json file valid.
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TYPE_WEB = 'web'
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TYPE_INSTALLED = 'installed'
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VALID_CLIENT = {
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TYPE_WEB: {
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'required': [
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'client_id',
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'client_secret',
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'redirect_uris',
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'auth_uri',
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'token_uri'],
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'string': [
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'client_id',
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'client_secret'
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]
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},
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TYPE_INSTALLED: {
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'required': [
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'client_id',
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'client_secret',
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'redirect_uris',
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'auth_uri',
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'token_uri'],
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'string': [
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'client_id',
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'client_secret'
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]
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}
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}
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class Error(Exception):
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"""Base error for this module."""
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pass
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class InvalidClientSecretsError(Error):
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"""Format of ClientSecrets file is invalid."""
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pass
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def _validate_clientsecrets(obj):
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if obj is None or len(obj) != 1:
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raise InvalidClientSecretsError('Invalid file format.')
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client_type = obj.keys()[0]
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if client_type not in VALID_CLIENT.keys():
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raise InvalidClientSecretsError('Unknown client type: %s.' % client_type)
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client_info = obj[client_type]
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for prop_name in VALID_CLIENT[client_type]['required']:
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if prop_name not in client_info:
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raise InvalidClientSecretsError(
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'Missing property "%s" in a client type of "%s".' % (prop_name,
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client_type))
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for prop_name in VALID_CLIENT[client_type]['string']:
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if client_info[prop_name].startswith('[['):
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raise InvalidClientSecretsError(
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'Property "%s" is not configured.' % prop_name)
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return client_type, client_info
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def load(fp):
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obj = simplejson.load(fp)
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return _validate_clientsecrets(obj)
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def loads(s):
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obj = simplejson.loads(s)
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return _validate_clientsecrets(obj)
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def loadfile(filename):
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try:
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fp = file(filename, 'r')
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try:
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obj = simplejson.load(fp)
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finally:
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fp.close()
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except IOError:
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raise InvalidClientSecretsError('File not found: "%s"' % filename)
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return _validate_clientsecrets(obj)
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