Issue 2396 - Add CSS property filter message responder

messageResponder.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 (function(global)
 {
   if (!global.ext)
     global.ext = require("ext_background");
 
   var Prefs = require("prefs").Prefs;
   var Utils = require("utils").Utils;
   var FilterStorage = require("filterStorage").FilterStorage;
   var FilterNotifier = require("filterNotifier").FilterNotifier;
   var defaultMatcher = require("matcher").defaultMatcher;
-  
+  var CSSRules = require("cssRules").CSSRules;
+
   var filterClasses = require("filterClasses");
   var Filter = filterClasses.Filter;
   var BlockingFilter = filterClasses.BlockingFilter;
+  var RegExpFilter = filterClasses.RegExpFilter;
   var Synchronizer = require("synchronizer").Synchronizer;
 
   var subscriptionClasses = require("subscriptionClasses");
   var Subscription = subscriptionClasses.Subscription;
   var DownloadableSubscription = subscriptionClasses.DownloadableSubscription;
   var SpecialSubscription = subscriptionClasses.SpecialSubscription;
 
   function convertObject(keys, obj)
   {
     var result = {};
@@ skipping 145 matching lines @@
           sendMessage("app", "error", [result.error.toString()], sender.page);
         else if (result.filter)
           FilterStorage.addFilter(result.filter);
         break;
       case "filters.blocked":
         var filter = defaultMatcher.matchesAny(message.url, message.requestType,
           message.docDomain, message.thirdParty);
         callback(filter instanceof BlockingFilter);
         break;
       case "filters.get":
+        if (message.what == "cssproperties")
+        {
+          if (!message.domain)
+          {
+            callback([]);
+            break;
+          }
+          var specificOnly = require("whitelisting").isFrameWhitelisted(

[Thomas Greiner, 2015/11/03 14:26:02]

I noticed that in "get-selectors" (see
https://hg.adblockplus.org/adblockpluschrome/file/tip/background.js#l302), it
also checks whether the frame is whitelisted to avoid injecting element hiding
filters into whitelisted frames. Because the issue is that content scripts are
running in every frame regardless of whether it is whitelisted or not.

[kzar, 2015/11/03 15:49:49]

Done.

+            sender.page, sender.frame, RegExpFilter.typeMap.GENERICHIDE
+          );
+          var filters = CSSRules.getRulesForDomain(message.domain, specificOnly);
+          filters = filters.map(function(filter)
+          {
+            return {
+              prefix: filter.selectorPrefix,
+              suffix: filter.selectorSuffix,
+              regexp: filter.regexpString
+            };
+          });
+          callback(filters);
+          break;
+        }
+
         var subscription = Subscription.fromURL(message.subscriptionUrl);
         if (!subscription)
         {
           callback([]);
           break;
         }
-        
+
         callback(subscription.filters.map(convertFilter));
         break;
       case "filters.importRaw":
         var result = require("filterValidation").parseFilters(message.text);
         var errors = [];
         for (var i = 0; i < result.errors.length; i++)
         {
           var error = result.errors[i];
           if (error.type != "unexpected-filter-list-header")
             errors.push(error.toString());
@@ skipping 102 matching lines @@
           subscription.title = message.title;
           subscription.homepage = message.homepage;
           FilterStorage.addSubscription(subscription);
           if (!subscription.lastDownload)
             Synchronizer.execute(subscription);
         }
         break;
     }
   });
 })(this);