--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fileserver/web.py	Wed Feb 29 13:09:11 2012 -0800
@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+
+"""
+WSGI app for FileServer
+
+Reference:
+- http://docs.webob.org/en/latest/file-example.html
+"""
+
+import mimetypes
+import os
+from webob import Request, Response, exc
+
+def get_mimetype(filename):
+    type, encoding = mimetypes.guess_type(filename)
+     # We'll ignore encoding, even though we shouldn't really
+    return type or 'application/octet-stream'
+
+def file_response(filename):
+    res = Response(content_type=get_mimetype(filename))
+    res.body = open(filename, 'rb').read()
+    return res
+
+class FileApp(object):
+    """
+    serve static files
+    """
+
+    def __init__(self, filename):
+        self.filename = filename
+
+    def __call__(self, environ, start_response):
+        res = file_response(self.filename)
+        return res(environ, start_response)
+
+class DirectoryServer(object):
+
+    def __init__(self, directory):
+        assert os.path.exists(directory), "'%s' does not exist" % directory
+        assert os.path.isdir(directory), "'%s' is not a directory" % directory
+        self.directory = directory
+
+    @staticmethod
+    def normpath(path):
+        return os.path.normcase(os.path.abspath(path))
+
+    def __call__(self, environ, start_response):
+        request = Request(environ)
+        # TODO method_not_allowed: Allow: GET, HEAD
+        path_info = request.path_info
+        if not path_info:
+            pass # self.add slash
+        full = self.normpath(os.path.join(self.directory, path_info.strip('/')))
+        if not full.startswith(self.directory):
+            # Out of bounds
+            return exc.HTTPNotFound()(environ, start_response)
+        if not os.path.exists(full):
+            return exc.HTTPNotFound()(environ, start_response)
+
+        if os.path.isdir(full):
+            # serve directory index
+            if not path_info.endswith('/'):
+                return self.add_slash(environ, start_response)
+            index = self.index(full)
+            response_headers = [('Content-Type', 'text/html'),
+                                ('Content-Length', str(len(index)))]
+            response = Response(index, content_type='text/html')
+            return response(environ, start_response)
+
+        # serve file
+        if path_info.endswith('/'):
+            # we create the `full` filename above by stripping off
+            # '/' from both sides; so we correct here
+            return exc.HTTPNotFound()(environ, start_response)
+        response = file_response(full)
+        return response(environ, start_response)
+
+if __name__ == '__main__':
+    from wsgiref import simple_server
+    app = Handler()
+    server = simple_server.make_server(host='0.0.0.0', port=8080, app=app)
+    server.serve_forever()