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from django.conf import settings
from django.core.handlers.base import get_path_info
from django.core.handlers.wsgi import WSGIHandler
from django.utils.six.moves.urllib.parse import urlparse
from django.utils.six.moves.urllib.request import url2pathname
from django.contrib.staticfiles import utils
from django.contrib.staticfiles.views import serve
class StaticFilesHandler(WSGIHandler):
"""
WSGI middleware that intercepts calls to the static files directory, as
defined by the STATIC_URL setting, and serves those files.
"""
def __init__(self, application, base_dir=None):
self.application = application
if base_dir:
self.base_dir = base_dir
else:
self.base_dir = self.get_base_dir()
self.base_url = urlparse(self.get_base_url())
super(StaticFilesHandler, self).__init__()
def get_base_dir(self):
return settings.STATIC_ROOT
def get_base_url(self):
utils.check_settings()
return settings.STATIC_URL
def _should_handle(self, path):
"""
Checks if the path should be handled. Ignores the path if:
* the host is provided as part of the base_url
* the request's path isn't under the media path (or equal)
"""
return path.startswith(self.base_url[2]) and not self.base_url[1]
def file_path(self, url):
"""
Returns the relative path to the media file on disk for the given URL.
"""
relative_url = url[len(self.base_url[2]):]
return url2pathname(relative_url)
def serve(self, request):
"""
Actually serves the request path.
"""
return serve(request, self.file_path(request.path), insecure=True)
def get_response(self, request):
from django.http import Http404
if self._should_handle(request.path):
try:
return self.serve(request)
except Http404 as e:
if settings.DEBUG:
from django.views import debug
return debug.technical_404_response(request, e)
return super(StaticFilesHandler, self).get_response(request)
def __call__(self, environ, start_response):
if not self._should_handle(get_path_info(environ)):
return self.application(environ, start_response)
return super(StaticFilesHandler, self).__call__(environ, start_response)
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