added cookie transfer request handler

loris/webapp.py

@@ -264,6 +264,10 @@ def _dissect_uri(self):
             self.request_type = 'favicon'
             return
 
+        elif self._path[1:] == 'trans.png':
+            self.request_type = 'transfer_cookie'
+            return
+
         #check for image request
         #Note: this doesn't guarantee that all the parameters have valid
         #values - see regexes in constants.py.
@@ -435,6 +439,9 @@ def route(self, request):
         if request_type == 'favicon':
             return self.get_favicon(request)
 
+        if request_type == 'transfer_cookie':
+            return self.transfer_cookie(request)
+
         if request_type == 'bad_image_request':
             return BadRequestResponse()
 
@@ -500,6 +507,12 @@ def get_favicon(self, request):
             r.make_conditional(request)
         return r
 
+    def transfer_cookie(self, request):
+         f = path.join(self.www_dp, 'icons', 'favicon.ico')
+         r = Response(open(f, 'rb'), content_type='image/x-icon')
+         r.set_cookie("_authorization_cookie", value=request.args['v'],  path='/')
+         return r
+
     def get_info(self, request, ident, base_uri):
         try:
             info, last_mod = self._get_info(ident,request,base_uri)