Noissue - Merge current tip to Edge bookmark

lib/csp.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
- * Copyright (C) 2006-2016 Eyeo GmbH
+ * Copyright (C) 2006-2017 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/>.
  */
 
 "use strict";
 
-const {defaultMatcher} = require("matcher");
-const {BlockingFilter, RegExpFilter} = require("filterClasses");
-const {getDecodedHostname} = require("url");
-
-chrome.webRequest.onHeadersReceived.addListener(details =>
-{
-  let hostname = getDecodedHostname(new URL(details.url));
-  let match = defaultMatcher.matchesAny("", RegExpFilter.typeMap.WEBSOCKET,
-                                        hostname, false, null, true);
-  if (match instanceof BlockingFilter)
-  {
-    details.responseHeaders.push({
-      name: "Content-Security-Policy",
-      // We're blocking WebSockets here by adding a connect-src restriction
-      // since the Chrome extension API does not allow us to intercept them.
-      // https://bugs.chromium.org/p/chromium/issues/detail?id=129353
-      //
-      // We also need the frame-src and object-src restrictions since CSPs are
-      // not inherited from the parent for documents with data: and blob: URLs.
-      // https://bugs.chromium.org/p/chromium/issues/detail?id=513860
-      //
-      // "http:" also includes "https:" implictly.
-      // https://www.chromestatus.com/feature/6653486812889088
-      value: "connect-src http:; frame-src http:; object-src http:"
-    });
-    return {responseHeaders: details.responseHeaders};
-  }
-}, {
-  urls: ["http://*/*", "https://*/*"],
-  types: ["main_frame", "sub_frame"]
-}, ["blocking", "responseHeaders"]);
+// Before Chrome 58, the webRequest API did not intercept WebSocket
+// connections (see https://crbug.com/129353). Hence we inject CSP headers,
+// below, as a workaround.