keystone/keystone/utils.py

161 lines
4.6 KiB
Python
Executable File

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2010-2011 OpenStack, LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
import logging
import functools
from webob import Response
import keystone.logic.types.fault as fault
def is_xml_response(req):
"""Returns True when the request wants an XML response, False otherwise"""
return "Accept" in req.headers and "application/xml" in req.accept
def get_app_root():
return os.path.abspath(os.path.dirname(__file__))
def get_auth_token(req):
if "X-Auth-Token" in req.headers:
return req.headers["X-Auth-Token"]
def get_auth_user(req):
if "X-Auth-User" in req.headers:
return req.headers["X-Auth-User"]
def get_auth_key(req):
if "X-Auth-Key" in req.headers:
return req.headers["X-Auth-Key"]
def wrap_error(func):
@functools.wraps(func)
def check_error(*args, **kwargs):
try:
return func(*args, **kwargs)
except Exception as err:
if isinstance(err, fault.IdentityFault):
return send_error(err.code, kwargs['req'], err)
else:
logging.exception(err)
return send_error(500, kwargs['req'],
fault.IdentityFault("Unhandled error",
str(err)))
return check_error
def get_normalized_request_content(model, req):
"""Initialize a model from json/xml contents of request body"""
if req.content_type == "application/xml":
return model.from_xml(req.body)
elif req.content_type == "application/json":
return model.from_json(req.body)
else:
raise fault.IdentityFault("I don't understand the content type",
code=415)
def send_error(code, req, result):
content = None
resp = Response()
resp.headers['content-type'] = None
resp.status = code
if result:
if is_xml_response(req):
content = result.to_xml()
resp.headers['content-type'] = "application/xml"
else:
content = result.to_json()
resp.headers['content-type'] = "application/json"
resp.content_type_params = {'charset': 'UTF-8'}
resp.unicode_body = content.decode('UTF-8')
return resp
def send_result(code, req, result):
content = None
resp = Response()
resp.headers['content-type'] = None
resp.status = code
if code > 399:
return resp
if result:
if is_xml_response(req):
content = result.to_xml()
resp.headers['content-type'] = "application/xml"
else:
content = result.to_json()
resp.headers['content-type'] = "application/json"
resp.content_type_params = {'charset': 'UTF-8'}
resp.unicode_body = content.decode('UTF-8')
return resp
def send_legacy_result(code, headers):
resp = Response()
if 'content-type' not in headers:
headers['content-type'] = "text/plain"
resp.headers = headers
resp.status = code
if code > 399:
return resp
resp.content_type_params = {'charset': 'UTF-8'}
return resp
# Currently using sha1 to hash, without a salt value.
# Need to research relevant openstack standards.
def get_hashed_password(password):
if password != None and len(password) > 0:
return password
# why is this disabled?
#return hashlib.sha1(password).hexdigest()
else:
return None
def import_module(module_name, class_name=None):
'''Import a class given a full module.class name or seperate
module and options. If no class_name is given, it is assumed to
be the last part of the module_name string.'''
if class_name is None:
module_name, _separator, class_name = module_name.rpartition('.')
try:
__import__(module_name)
return getattr(sys.modules[module_name], class_name)
except (ImportError, ValueError, AttributeError), exception:
raise ImportError(_('Class %s.%s cannot be found (%s)') %
(module_name, class_name, exception))