Better RFC support for OPTIONS and CORS preflight requests
Ensures that the Allow header is set for 405 responses from the proxy, as per RFC 2616. CORS preflight requests now require both the Origin and Access- Control-Request-Method headers to get a successful (200) response. The draft spec defines errors as a response with a non-200 status code. This patch sets the CORS error response code to 401 (Not Authorized). A later patch may choose to make this configurable. There is some ambiguity between RFC 2616 and the CORS draft spec around what to do when a CORS request is made but the cluster has no CORS information about the requested resource. This patch chooses to return an error in this case because it is what would be simplest for CORS client apps. Further improvements to the OPTIONS verb not included in this patch include support of more top-level resources (eg / or /v1/) or sending the configured constraints in the reponse body. Change-Id: I40be059e8bbf3737dafc4e6fefa7598d05669c60
This commit is contained in:
John Dickinson
parent
a4da977e6c
commit
16ecc430ca
@ -42,13 +42,17 @@ class AccountController(Controller):
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def __init__(self, app, account_name, **kwargs):
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Controller.__init__(self, app)
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self.account_name = unquote(account_name)
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if not self.app.allow_account_management:
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self.allowed_methods.remove('PUT')
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self.allowed_methods.remove('DELETE')
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def GETorHEAD(self, req):
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"""Handler for HTTP GET/HEAD requests."""
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partition, nodes = self.app.account_ring.get_nodes(self.account_name)
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shuffle(nodes)
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resp = self.GETorHEAD_base(req, _('Account'), partition, nodes,
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req.path_info.rstrip('/'), len(nodes))
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resp = self.GETorHEAD_base(
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req, _('Account'), partition, nodes, req.path_info.rstrip('/'),
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len(nodes))
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if resp.status_int == HTTP_NOT_FOUND and self.app.account_autocreate:
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if len(self.account_name) > MAX_ACCOUNT_NAME_LENGTH:
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resp = HTTPBadRequest(request=req)
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@ -66,15 +70,18 @@ class AccountController(Controller):
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self.app.logger.warning('Could not autocreate account %r' %
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self.account_name)
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return resp
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resp = self.GETorHEAD_base(req, _('Account'), partition, nodes,
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req.path_info.rstrip('/'), len(nodes))
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resp = self.GETorHEAD_base(
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req, _('Account'), partition, nodes, req.path_info.rstrip('/'),
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len(nodes))
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return resp
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@public
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def PUT(self, req):
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"""HTTP PUT request handler."""
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if not self.app.allow_account_management:
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return HTTPMethodNotAllowed(request=req)
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return HTTPMethodNotAllowed(
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request=req,
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headers={'Allow': ', '.join(self.allowed_methods)})
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error_response = check_metadata(req, 'account')
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if error_response:
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return error_response
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@ -91,8 +98,9 @@ class AccountController(Controller):
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self.transfer_headers(req.headers, headers)
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if self.app.memcache:
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self.app.memcache.delete('account%s' % req.path_info.rstrip('/'))
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resp = self.make_requests(req, self.app.account_ring,
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account_partition, 'PUT', req.path_info, [headers] * len(accounts))
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resp = self.make_requests(
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req, self.app.account_ring, account_partition, 'PUT',
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req.path_info, [headers] * len(accounts))
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return resp
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@public
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@ -109,9 +117,9 @@ class AccountController(Controller):
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self.transfer_headers(req.headers, headers)
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if self.app.memcache:
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self.app.memcache.delete('account%s' % req.path_info.rstrip('/'))
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resp = self.make_requests(req, self.app.account_ring,
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account_partition, 'POST', req.path_info,
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[headers] * len(accounts))
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resp = self.make_requests(
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req, self.app.account_ring, account_partition, 'POST',
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req.path_info, [headers] * len(accounts))
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if resp.status_int == HTTP_NOT_FOUND and self.app.account_autocreate:
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if len(self.account_name) > MAX_ACCOUNT_NAME_LENGTH:
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resp = HTTPBadRequest(request=req)
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@ -132,7 +140,9 @@ class AccountController(Controller):
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def DELETE(self, req):
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"""HTTP DELETE request handler."""
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if not self.app.allow_account_management:
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return HTTPMethodNotAllowed(request=req)
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return HTTPMethodNotAllowed(
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request=req,
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headers={'Allow': ', '.join(self.allowed_methods)})
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account_partition, accounts = \
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self.app.account_ring.get_nodes(self.account_name)
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headers = {'X-Timestamp': normalize_timestamp(time.time()),
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@ -140,7 +150,7 @@ class AccountController(Controller):
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'Connection': 'close'}
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if self.app.memcache:
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self.app.memcache.delete('account%s' % req.path_info.rstrip('/'))
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resp = self.make_requests(req, self.app.account_ring,
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account_partition, 'DELETE', req.path_info,
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[headers] * len(accounts))
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resp = self.make_requests(
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req, self.app.account_ring, account_partition, 'DELETE',
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req.path_info, [headers] * len(accounts))
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return resp
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@ -26,6 +26,7 @@
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import time
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import functools
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import inspect
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from eventlet import spawn_n, GreenPile, Timeout
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from eventlet.queue import Queue, Empty, Full
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@ -38,7 +39,7 @@ from swift.common.exceptions import ChunkReadTimeout, ConnectionTimeout
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from swift.common.http import is_informational, is_success, is_redirection, \
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is_server_error, HTTP_OK, HTTP_PARTIAL_CONTENT, HTTP_MULTIPLE_CHOICES, \
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HTTP_BAD_REQUEST, HTTP_NOT_FOUND, HTTP_SERVICE_UNAVAILABLE, \
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HTTP_INSUFFICIENT_STORAGE
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HTTP_INSUFFICIENT_STORAGE, HTTP_UNAUTHORIZED
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from swift.common.swob import Request, Response, status_map
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@ -132,6 +133,11 @@ class Controller(object):
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self.account_name = None
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self.app = app
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self.trans_id = '-'
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self.allowed_methods = set()
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all_methods = inspect.getmembers(self, predicate=inspect.ismethod)
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for name, m in all_methods:
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if getattr(m, 'publicly_accessible', False):
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self.allowed_methods.add(name)
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def transfer_headers(self, src_headers, dst_headers):
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@ -696,28 +702,41 @@ class Controller(object):
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:param req: swob.Request object
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:returns: swob.Response object
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"""
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container_info = \
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self.container_info(self.account_name, self.container_name)
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headers = {'Allow': ', '.join(self.allowed_methods)}
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resp = Response(status=200, request=req,
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headers=headers)
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req_origin_value = req.headers.get('Origin', None)
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if not req_origin_value:
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# NOT a CORS request
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return resp
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# CORS preflight request
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try:
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container_info = \
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self.container_info(self.account_name, self.container_name)
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except AttributeError:
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container_info = {}
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cors = container_info.get('cors', {})
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allowed_origins = set()
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if cors.get('allow_origin'):
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allowed_origins.update(cors['allow_origin'].split(' '))
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if self.app.cors_allow_origin:
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allowed_origins.update(self.app.cors_allow_origin)
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if not allowed_origins:
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return Response(status=401, request=req)
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headers = {}
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if req.headers.get('Origin') in allowed_origins \
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or '*' in allowed_origins:
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headers['access-control-allow-origin'] = ' '.join(allowed_origins)
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headers['access-control-max-age'] = cors.get('max_age')
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headers['access-control-allow-methods'] = \
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'GET, POST, PUT, DELETE, HEAD'
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headers['access-control-allow-headers'] = \
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cors.get('allow_headers')
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return Response(status=200, headers=headers, request=req)
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else:
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return Response(status=401, request=req)
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if (req_origin_value not in allowed_origins and
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'*' not in allowed_origins) or (
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req.headers.get('Access-Control-Request-Method') not in
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self.allowed_methods):
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resp.status = HTTP_UNAUTHORIZED
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return resp # CORS preflight request that isn't valid
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headers['access-control-allow-origin'] = req_origin_value
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if cors.get('max_age', None) is not None:
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headers['access-control-max-age'] = '%d' % cors.get('max_age')
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headers['access-control-allow-methods'] = ', '.join(
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self.allowed_methods)
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if cors.get('allow_headers'):
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headers['access-control-allow-headers'] = cors.get('allow_headers')
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resp.headers = headers
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return resp
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@public
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def OPTIONS(self, req):
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@ -213,7 +213,9 @@ class Application(object):
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handler = getattr(controller, req.method)
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getattr(handler, 'publicly_accessible')
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except AttributeError:
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return HTTPMethodNotAllowed(request=req)
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allowed_methods = getattr(controller, 'allowed_methods', set())
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return HTTPMethodNotAllowed(
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request=req, headers={'Allow': ', '.join(allowed_methods)})
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if path_parts['version']:
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req.path_info_pop()
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if 'swift.authorize' in req.environ:
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@ -3514,7 +3514,8 @@ class TestObjectController(unittest.TestCase):
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req = Request.blank(
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'/a/c/o.jpg',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'http://foo.com'})
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headers={'Origin': 'http://foo.com',
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'Access-Control-Request-Method': 'GET'})
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resp = controller.OPTIONS(req)
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self.assertEquals(401, resp.status_int)
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@ -3524,7 +3525,8 @@ class TestObjectController(unittest.TestCase):
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req = Request.blank(
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'/a/c/o.jpg',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'http://foo.com'})
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headers={'Origin': 'http://foo.com',
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'Access-Control-Request-Method': 'GET'})
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resp = controller.OPTIONS(req)
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self.assertEquals(401, resp.status_int)
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@ -3540,24 +3542,39 @@ class TestObjectController(unittest.TestCase):
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req = Request.blank(
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'/a/c/o.jpg',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'https://foo.bar'})
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headers={'Origin': 'https://foo.bar',
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'Access-Control-Request-Method': 'GET'})
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req.content_length = 0
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resp = controller.OPTIONS(req)
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self.assertEquals(200, resp.status_int)
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self.assertEquals(
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set(['http://foo.bar:8080', 'https://foo.bar']),
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set(resp.headers['access-control-allow-origin'].split()))
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'https://foo.bar',
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resp.headers['access-control-allow-origin'])
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for verb in 'OPTIONS COPY GET POST PUT DELETE HEAD'.split():
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self.assertTrue(
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verb in resp.headers['access-control-allow-methods'])
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self.assertEquals(
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'GET, POST, PUT, DELETE, HEAD',
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resp.headers['access-control-allow-methods'])
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len(resp.headers['access-control-allow-methods'].split(', ')),
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7)
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self.assertEquals('999', resp.headers['access-control-max-age'])
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self.assertEquals(
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'x-foo',
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resp.headers['access-control-allow-headers'])
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req = Request.blank('/a/c/o.jpg', {'REQUEST_METHOD': 'OPTIONS'})
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req = Request.blank(
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'/a/c/o.jpg',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'https://foo.bar'})
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req.content_length = 0
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resp = controller.OPTIONS(req)
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self.assertEquals(401, resp.status_int)
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req = Request.blank('/a/c/o.jpg', {'REQUEST_METHOD': 'OPTIONS'})
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req.content_length = 0
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resp = controller.OPTIONS(req)
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self.assertEquals(200, resp.status_int)
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for verb in 'OPTIONS COPY GET POST PUT DELETE HEAD'.split():
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self.assertTrue(
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verb in resp.headers['Allow'])
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self.assertEquals(len(resp.headers['Allow'].split(', ')), 7)
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req = Request.blank(
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'/a/c/o.jpg',
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{'REQUEST_METHOD': 'OPTIONS'},
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@ -3567,11 +3584,43 @@ class TestObjectController(unittest.TestCase):
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req = Request.blank(
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'/a/c/o.jpg',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'http://foo.bar'})
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headers={'Origin': 'http://foo.bar',
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'Access-Control-Request-Method': 'GET'})
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controller.app.cors_allow_origin = ['http://foo.bar', ]
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resp = controller.OPTIONS(req)
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self.assertEquals(200, resp.status_int)
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def my_container_info_wildcard(*args):
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return {
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'cors': {
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'allow_origin': '*',
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'allow_headers': 'x-foo',
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'max_age': 999,
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}
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}
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controller.container_info = my_container_info_wildcard
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req = Request.blank(
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'/a/c/o.jpg',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'https://bar.baz',
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'Access-Control-Request-Method': 'GET'})
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req.content_length = 0
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resp = controller.OPTIONS(req)
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self.assertEquals(200, resp.status_int)
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self.assertEquals(
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'https://bar.baz',
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resp.headers['access-control-allow-origin'])
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for verb in 'OPTIONS COPY GET POST PUT DELETE HEAD'.split():
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self.assertTrue(
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verb in resp.headers['access-control-allow-methods'])
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self.assertEquals(
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len(resp.headers['access-control-allow-methods'].split(', ')),
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7)
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self.assertEquals('999', resp.headers['access-control-max-age'])
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self.assertEquals(
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'x-foo',
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resp.headers['access-control-allow-headers'])
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class TestContainerController(unittest.TestCase):
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"Test swift.proxy_server.ContainerController"
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@ -4071,7 +4120,8 @@ class TestContainerController(unittest.TestCase):
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req = Request.blank(
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'/a/c',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'http://foo.com'})
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headers={'Origin': 'http://foo.com',
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'Access-Control-Request-Method': 'GET'})
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resp = controller.OPTIONS(req)
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self.assertEquals(401, resp.status_int)
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@ -4081,7 +4131,8 @@ class TestContainerController(unittest.TestCase):
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req = Request.blank(
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'/a/c',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'http://foo.com'})
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headers={'Origin': 'http://foo.com',
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'Access-Control-Request-Method': 'GET'})
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resp = controller.OPTIONS(req)
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self.assertEquals(401, resp.status_int)
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@ -4097,38 +4148,86 @@ class TestContainerController(unittest.TestCase):
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req = Request.blank(
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'/a/c',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'https://foo.bar'})
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headers={'Origin': 'https://foo.bar',
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'Access-Control-Request-Method': 'GET'})
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req.content_length = 0
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resp = controller.OPTIONS(req)
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self.assertEquals(200, resp.status_int)
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self.assertEquals(
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set(['http://foo.bar:8080', 'https://foo.bar']),
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set(resp.headers['access-control-allow-origin'].split()))
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'https://foo.bar',
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resp.headers['access-control-allow-origin'])
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for verb in 'OPTIONS GET POST PUT DELETE HEAD'.split():
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self.assertTrue(
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verb in resp.headers['access-control-allow-methods'])
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self.assertEquals(
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'GET, POST, PUT, DELETE, HEAD',
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resp.headers['access-control-allow-methods'])
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len(resp.headers['access-control-allow-methods'].split(', ')),
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6)
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self.assertEquals('999', resp.headers['access-control-max-age'])
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self.assertEquals(
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'x-foo',
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resp.headers['access-control-allow-headers'])
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req = Request.blank('/a/c', {'REQUEST_METHOD': 'OPTIONS'})
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req = Request.blank(
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'/a/c',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'https://foo.bar'})
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req.content_length = 0
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resp = controller.OPTIONS(req)
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self.assertEquals(401, resp.status_int)
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req = Request.blank('/a/c', {'REQUEST_METHOD': 'OPTIONS'})
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req.content_length = 0
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resp = controller.OPTIONS(req)
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self.assertEquals(200, resp.status_int)
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for verb in 'OPTIONS GET POST PUT DELETE HEAD'.split():
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self.assertTrue(
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verb in resp.headers['Allow'])
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self.assertEquals(len(resp.headers['Allow'].split(', ')), 6)
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req = Request.blank(
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'/a/c',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'http://foo.bar'})
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headers={'Origin': 'http://foo.bar',
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'Access-Control-Request-Method': 'GET'})
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resp = controller.OPTIONS(req)
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self.assertEquals(401, resp.status_int)
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req = Request.blank(
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'/a/c',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'http://foo.bar'})
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headers={'Origin': 'http://foo.bar',
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'Access-Control-Request-Method': 'GET'})
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controller.app.cors_allow_origin = ['http://foo.bar', ]
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resp = controller.OPTIONS(req)
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self.assertEquals(200, resp.status_int)
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def my_container_info_wildcard(*args):
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return {
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'cors': {
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'allow_origin': '*',
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'allow_headers': 'x-foo',
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'max_age': 999,
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}
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}
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controller.container_info = my_container_info_wildcard
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req = Request.blank(
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'/a/c/o.jpg',
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{'REQUEST_METHOD': 'OPTIONS'},
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headers={'Origin': 'https://bar.baz',
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'Access-Control-Request-Method': 'GET'})
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req.content_length = 0
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resp = controller.OPTIONS(req)
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self.assertEquals(200, resp.status_int)
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self.assertEquals(
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'https://bar.baz',
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resp.headers['access-control-allow-origin'])
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for verb in 'OPTIONS GET POST PUT DELETE HEAD'.split():
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self.assertTrue(
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verb in resp.headers['access-control-allow-methods'])
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self.assertEquals(
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len(resp.headers['access-control-allow-methods'].split(', ')),
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6)
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self.assertEquals('999', resp.headers['access-control-max-age'])
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self.assertEquals(
|
||||
'x-foo',
|
||||
resp.headers['access-control-allow-headers'])
|
||||
|
||||
|
||||
class TestAccountController(unittest.TestCase):
|
||||
|
||||
@ -4151,6 +4250,30 @@ class TestAccountController(unittest.TestCase):
|
||||
res = method(req)
|
||||
self.assertEquals(res.status_int, expected)
|
||||
|
||||
def test_OPTIONS(self):
|
||||
with save_globals():
|
||||
self.app.allow_account_management = False
|
||||
controller = proxy_server.AccountController(self.app, 'account')
|
||||
req = Request.blank('/account', {'REQUEST_METHOD': 'OPTIONS'})
|
||||
req.content_length = 0
|
||||
resp = controller.OPTIONS(req)
|
||||
self.assertEquals(200, resp.status_int)
|
||||
for verb in 'OPTIONS GET POST HEAD'.split():
|
||||
self.assertTrue(
|
||||
verb in resp.headers['Allow'])
|
||||
self.assertEquals(len(resp.headers['Allow'].split(', ')), 4)
|
||||
self.app.allow_account_management = True
|
||||
controller = proxy_server.AccountController(self.app, 'account')
|
||||
req = Request.blank('/account', {'REQUEST_METHOD': 'OPTIONS'})
|
||||
req.content_length = 0
|
||||
resp = controller.OPTIONS(req)
|
||||
self.assertEquals(200, resp.status_int)
|
||||
print resp.headers['Allow']
|
||||
for verb in 'OPTIONS GET POST PUT DELETE HEAD'.split():
|
||||
self.assertTrue(
|
||||
verb in resp.headers['Allow'])
|
||||
self.assertEquals(len(resp.headers['Allow'].split(', ')), 6)
|
||||
|
||||
def test_GET(self):
|
||||
with save_globals():
|
||||
controller = proxy_server.AccountController(self.app, 'account')
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user