def get_resource(self, url, orig_req, log):
"""
Gets the resource at the given url, using the original request
`orig_req` as the basis for constructing the subrequest.
Returns a `webob.Response` object.
"""
assert url is not None
if url.lower().startswith('file:'):
if not display_local_files(orig_req):
## FIXME: not sure if this applies generally; some
## calls to get_resource might be because of a more
## valid subrequest than displaying a file
return exc.HTTPForbidden(
"You cannot access file: URLs (like %r)" % url)
filename = url_to_filename(url)
if not os.path.exists(filename):
return exc.HTTPNotFound(
"The file %r was not found" % filename)
if os.path.isdir(filename):
return exc.HTTPForbidden(
"You cannot display a directory (%r)" % filename)
subresp = Response()
type, dummy = mimetypes.guess_type(filename)
if not type:
type = 'application/octet-stream'
subresp.content_type = type
## FIXME: reading the whole thing obviously ain't great:
f = open(filename, 'rb')
subresp.body = f.read()
f.close()
return subresp
elif url.startswith(orig_req.application_url + '/'):
subreq = orig_req.copy_get()
subreq.environ['deliverance.subrequest_original_environ'] = orig_req.environ
#jhb
subreq.environ['deliverance.subrequest_original_request'] = orig_req
new_path_info = url[len(orig_req.application_url):]
query_string = ''
if '?' in new_path_info:
new_path_info, query_string = new_path_info.split('?')
new_path_info = urllib.unquote(new_path_info)
assert new_path_info.startswith('/')
subreq.path_info = new_path_info
subreq.query_string = query_string
subresp = subreq.get_response(self.app)
## FIXME: error if not HTML?
## FIXME: handle redirects?
## FIXME: handle non-200?
log.debug(self, 'Internal request for %s: %s content-type: %s',
url, subresp.status, subresp.content_type)
return subresp
else:
## FIXME: pluggable subrequest handler?
subreq = Request.blank(url)
subresp = subreq.get_response(proxy_exact_request)
log.debug(self, 'External request for %s: %s content-type: %s',
url, subresp.status, subresp.content_type)
return subresp
def get_resource(self, url, orig_req, log, retry_inner_if_not_200=False):
"""
Gets the resource at the given url, using the original request
`orig_req` as the basis for constructing the subrequest.
Returns a `webob.Response` object.
If `url.startswith(orig_req.application_url + '/')`, then Deliverance
will try to fetch the resource by making a subrequest to the app that
is being wrapped by Deliverance, instead of an external subrequest.
This can cause problems in some setups -- see #16. To work around
this, if `retry_inner_if_not_200` is True, then, in the situation
described above, non-200 responses from the inner app will be tossed
out, and the request will be retried as an external http request.
Currently this is used only by RuleSet.get_theme
"""
assert url is not None
force_external = 'deliv_force_external' in urlparse.urlsplit(url).query
if url.lower().startswith('file:'):
if not display_local_files(orig_req):
## FIXME: not sure if this applies generally; some
## calls to get_resource might be because of a more
## valid subrequest than displaying a file
return exc.HTTPForbidden(
"You cannot access file: URLs (like %r)" % url)
filename = url_to_filename(url)
if not os.path.exists(filename):
return exc.HTTPNotFound("The file %r was not found" % filename)
if os.path.isdir(filename):
return exc.HTTPForbidden(
"You cannot display a directory (%r)" % filename)
subresp = Response()
type, dummy = mimetypes.guess_type(filename)
if not type:
type = 'application/octet-stream'
subresp.content_type = type
## FIXME: reading the whole thing obviously ain't great:
f = open(filename, 'rb')
subresp.body = f.read()
f.close()
return subresp
elif not force_external and\
url.startswith(orig_req.application_url + '/'):
subreq = orig_req.copy_get()
subreq.environ[
'deliverance.subrequest_original_environ'] = orig_req.environ
new_path_info = url[len(orig_req.application_url):]
query_string = ''
if '?' in new_path_info:
new_path_info, query_string = new_path_info.split('?', 1)
new_path_info = urllib.unquote(new_path_info)
assert new_path_info.startswith('/')
subreq.path_info = new_path_info
subreq.query_string = query_string
subresp = subreq.get_response(self.app)
## FIXME: error if not HTML?
## FIXME: handle redirects?
## FIXME: handle non-200?
log.debug(self, 'Internal request for %s: %s content-type: %s',
url, subresp.status, subresp.content_type)
if not retry_inner_if_not_200:
return subresp
if subresp.status_int == 200:
return subresp
elif 'x-deliverance-theme-subrequest' in orig_req.headers:
log.debug(
self, 'Internal request for %s was not 200 OK; '
'returning it anyway.' % url)
return subresp
else:
log.debug(
self,
'Internal request for %s was not 200 OK; retrying as external request.'
% url)
## FIXME: ZCA aptaperized subrequest handler
subreq = self.build_external_subrequest(url, orig_req, log)
subresp = subreq.get_response(proxy_exact_request)
log.debug(self, 'External request for %s: %s content-type: %s', url,
subresp.status, subresp.content_type)
return subresp
def get_resource(self, url, orig_req, log, retry_inner_if_not_200=False):
"""
Gets the resource at the given url, using the original request
`orig_req` as the basis for constructing the subrequest.
Returns a `webob.Response` object.
If `url.startswith(orig_req.application_url + '/')`, then Deliverance
will try to fetch the resource by making a subrequest to the app that
is being wrapped by Deliverance, instead of an external subrequest.
This can cause problems in some setups -- see #16. To work around
this, if `retry_inner_if_not_200` is True, then, in the situation
described above, non-200 responses from the inner app will be tossed
out, and the request will be retried as an external http request.
Currently this is used only by RuleSet.get_theme
"""
assert url is not None
if url.lower().startswith('file:'):
if not display_local_files(orig_req):
## FIXME: not sure if this applies generally; some
## calls to get_resource might be because of a more
## valid subrequest than displaying a file
return exc.HTTPForbidden(
"You cannot access file: URLs (like %r)" % url)
filename = url_to_filename(url)
if not os.path.exists(filename):
return exc.HTTPNotFound(
"The file %r was not found" % filename)
if os.path.isdir(filename):
return exc.HTTPForbidden(
"You cannot display a directory (%r)" % filename)
subresp = Response()
type, dummy = mimetypes.guess_type(filename)
if not type:
type = 'application/octet-stream'
subresp.content_type = type
## FIXME: reading the whole thing obviously ain't great:
f = open(filename, 'rb')
subresp.body = f.read()
f.close()
return subresp
elif self.use_internal_subrequest(url, orig_req, log):
subreq = orig_req.copy_get()
subreq.environ['deliverance.subrequest_original_environ'] = orig_req.environ
new_path_info = url[len(orig_req.application_url):]
query_string = ''
if '?' in new_path_info:
new_path_info, query_string = new_path_info.split('?', 1)
new_path_info = urllib.unquote(new_path_info)
assert new_path_info.startswith('/')
subreq.path_info = new_path_info
subreq.query_string = query_string
subresp = subreq.get_response(self.app)
## FIXME: error if not HTML?
## FIXME: handle redirects?
## FIXME: handle non-200?
log.debug(self, 'Internal request for %s: %s content-type: %s',
url, subresp.status, subresp.content_type)
if not retry_inner_if_not_200:
return subresp
if subresp.status_int == 200:
return subresp
elif 'x-deliverance-theme-subrequest' in orig_req.headers:
log.debug(self,
'Internal request for %s was not 200 OK; '
'returning it anyway.' % url)
return subresp
else:
log.debug(self,
'Internal request for %s was not 200 OK; retrying as external request.' % url)
## FIXME: pluggable subrequest handler?
subreq = self.build_external_subrequest(url, orig_req, log)
subresp = subreq.get_response(proxy_exact_request)
log.debug(self, 'External request for %s: %s content-type: %s',
url, subresp.status, subresp.content_type)
return subresp
