99 lines
3.6 KiB
Python
99 lines
3.6 KiB
Python
# Copyright (c) 2010 OpenStack, LLC.
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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
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# 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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from ConfigParser import ConfigParser, NoOptionError
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import os
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import time
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from webob.request import Request
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from webob.exc import HTTPUnauthorized, HTTPPreconditionFailed
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from eventlet.timeout import Timeout
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from swift.common.utils import split_path
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from swift.common.bufferedhttp import http_connect_raw as http_connect
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class DevAuthMiddleware(object):
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"""
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Auth Middleware that uses the dev auth server
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"""
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def __init__(self, app, conf, memcache_client, logger):
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self.app = app
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self.memcache_client = memcache_client
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self.logger = logger
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self.conf = conf
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self.auth_host = conf.get('bind_ip', '127.0.0.1')
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self.auth_port = int(conf.get('bind_port', 11000))
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self.timeout = int(conf.get('node_timeout', 10))
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def __call__(self, env, start_response):
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req = Request(env)
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if req.path != '/healthcheck':
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if 'x-storage-token' in req.headers and \
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'x-auth-token' not in req.headers:
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req.headers['x-auth-token'] = req.headers['x-storage-token']
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version, account, container, obj = split_path(req.path, 1, 4, True)
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if account is None:
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return HTTPPreconditionFailed(request=req, body='Bad URL')(
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env, start_response)
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if not req.headers.get('x-auth-token'):
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return HTTPPreconditionFailed(request=req,
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body='Missing Auth Token')(env, start_response)
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if account is None:
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return HTTPPreconditionFailed(
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request=req, body='Bad URL')(env, start_response)
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if not self.auth(account, req.headers['x-auth-token']):
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return HTTPUnauthorized(request=req)(env, start_response)
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# If we get here, then things should be good.
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return self.app(env, start_response)
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def auth(self, account, token):
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"""
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Dev authorization implmentation
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:param account: account name
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:param token: auth token
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:returns: True if authorization is successful, False otherwise
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"""
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key = 'auth/%s/%s' % (account, token)
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now = time.time()
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cached_auth_data = self.memcache_client.get(key)
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if cached_auth_data:
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start, expiration = cached_auth_data
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if now - start <= expiration:
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return True
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try:
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with Timeout(self.timeout):
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conn = http_connect(self.auth_host, self.auth_port, 'GET',
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'/token/%s/%s' % (account, token))
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resp = conn.getresponse()
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resp.read()
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conn.close()
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if resp.status == 204:
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validated = float(resp.getheader('x-auth-ttl'))
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else:
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validated = False
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except:
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self.logger.exception('ERROR with auth')
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return False
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if not validated:
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return False
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else:
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val = (now, validated)
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self.memcache_client.set(key, val, timeout=validated)
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return True
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