Issue 3823 - Split up message responder code

lib/whitelisting.js

Index: lib/whitelisting.js
===================================================================
--- a/lib/whitelisting.js
+++ b/lib/whitelisting.js
@@ -22,6 +22,7 @@
 let {defaultMatcher} = require("matcher");
 let {RegExpFilter} = require("filterClasses");
 let {stringifyURL, getDecodedHostname, extractHostFromFrame, isThirdParty} = require("url");
+let {port} = require("messaging");
 let devtools = require("devtools");
 
 let pagesWithKey = new ext.PageMap();
@@ -46,6 +47,7 @@
   return filter;
 }
 
+let checkWhitelisted =
 /**
  * Gets the active whitelisting filter for the document associated
  * with the given page/frame, or null if it's not whitelisted.
@@ -129,6 +131,7 @@
   urlsWithKey[stringifyURL(url)] = key;
 }
 
+let processKey =
 /**
  * Validates signatures given by the "X-Adblock-Key" response
  * header or the "data-adblockkey" attribute of the document
@@ -151,3 +154,13 @@
   if (verifyKey(key, signature, frame.url))
     recordKey(page, frame.url, key);
 };
+
+port.on("filters.addKey", (message, sender) =>
+{
+  processKey(message.token, sender.page, sender.frame);
+});
+
+port.on("filters.isPageWhitelisted", (message, sender) =>
+{
+  return !!checkWhitelisted(sender.page);
+});