OpenStack Study: crossdomain.py

OpenStack Index

**** CubicPower OpenStack Study ****

# 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.

from swift.common.swob import Request, Response

from swift.common.utils import register_swift_info

**** CubicPower OpenStack Study ****

class CrossDomainMiddleware(object):

"""

Cross domain middleware used to respond to requests for cross domain

policy information.

If the path is /crossdomain.xml it will respond with an xml cross domain

policy document. This allows web pages hosted elsewhere to use client

side technologies such as Flash, Java and Silverlight to interact

with the Swift API.

To enable this middleware, add it to the pipeline in your proxy-server.conf

file. It should be added before any authentication (e.g., tempauth or

keystone) middleware. In this example ellipsis (...) indicate other

middleware you may have chosen to use::

[pipeline:main]

pipeline = ... crossdomain ... authtoken ... proxy-server

And add a filter section, such as::

[filter:crossdomain]

use = egg:swift#crossdomain

cross_domain_policy =

For continuation lines, put some whitespace before the continuation

text. Ensure you put a completely blank line to terminate the

cross_domain_policy value.

The cross_domain_policy name/value is optional. If omitted, the policy

**** CubicPower OpenStack Study ****

def __init__(self, app, conf, *args, **kwargs):

self.app = app

self.conf = conf

default_domain_policy = ' ' secure="false" />'

self.cross_domain_policy = self.conf.get('cross_domain_policy',

default_domain_policy)

**** CubicPower OpenStack Study ****

def GET(self, req):

"""Returns a 200 response with cross domain policy information """

body = '\n' \

' '"http://www.adobe.com/xml/dtds/cross-domain-policy.dtd" >\n' \

'\n' \

'%s\n' \

'' % self.cross_domain_policy

return Response(request=req, body=body,

content_type="application/xml")

**** CubicPower OpenStack Study ****

def __call__(self, env, start_response):

req = Request(env)

if req.path == '/crossdomain.xml' and req.method == 'GET':

return self.GET(req)(env, start_response)

else:

return self.app(env, start_response)

def filter_factory(global_conf, **local_conf):

conf = global_conf.copy()

conf.update(local_conf)

register_swift_info('crossdomain')

**** CubicPower OpenStack Study ****

def filter_factory(global_conf, **local_conf):

conf = global_conf.copy()

conf.update(local_conf)

register_swift_info('crossdomain')

**** CubicPower OpenStack Study ****

def crossdomain_filter(app):

return CrossDomainMiddleware(app, conf)

return crossdomain_filter