privacy exposure reduction: local mirroring of CDN resources

_locales/de/messages.json

@@ -107,6 +107,10 @@
     "message":"Verwende das Kontext-Menü, falls möglich",
     "description":"English: Make use of context menu where appropriate"
   },
+  "settingsExperimentalPrompt":{
+    "message":"Enable experimental features",
+    "description":"English: Enable experimental features"
+  },
   "3pListsOfBlockedHostsPrompt":{
     "message":"{{netFilterCount}} Netzwerkfilter ＋ {{cosmeticFilterCount}} kosmetische Filter von:",
     "description":"English: {{netFilterCount}} network filters ＋ {{cosmeticFilterCount}} cosmetic filters from:"

_locales/en/messages.json

@@ -107,6 +107,10 @@
     "message":"Make use of context menu where appropriate",
     "description":"English: Make use of context menu where appropriate"
   },
+  "settingsExperimentalPrompt":{
+    "message":"Enable experimental features",
+    "description":"English: Enable experimental features"
+  },
   "3pListsOfBlockedHostsPrompt":{
     "message":"{{netFilterCount}} network filters ＋ {{cosmeticFilterCount}} cosmetic filters from:",
     "description":"English: {{netFilterCount}} network filters ＋ {{cosmeticFilterCount}} cosmetic filters from:"

_locales/fr/messages.json

@@ -107,6 +107,10 @@
     "message":"Utiliser le menu contextuel si possible",
     "description":"English: Make use of context menu where appropriate"
   },
+  "settingsExperimentalPrompt":{
+    "message":"Activer les fonctionalités expérimentales",
+    "description":"English: Enable experimental features"
+  },
   "3pListsOfBlockedHostsPrompt":{
     "message":"{{netFilterCount}} filtre(s) réseau et {{cosmeticFilterCount}} filtre(s) esthétique(s) sont actuellement en action :",
     "description":"English: {{netFilterCount}} network filters ＋ {{cosmeticFilterCount}} cosmetic filters from:"

background.html

@@ -9,6 +9,7 @@
 <script src="lib/publicsuffixlist.min.js"></script>
 <script src="lib/yamd5.js"></script>
 <script src="js/background.js"></script>
+<script src="js/mirrors.js"></script>
 <script src="js/xal.js"></script>
 <script src="js/async.js"></script>
 <script src="js/liquid-dict.js"></script>

js/background.js

@@ -55,6 +55,7 @@ return {
         autoUpdate: true,
         collapseBlocked: true,
         contextMenuEnabled: false,
+        experimentalEnabled: false,
         externalLists: defaultExternalLists,
         logRequests: false,
         parseAllABPHideFilters: true,

js/settings.js

@@ -61,6 +61,12 @@ var onUserSettingsReceived = function(details) {
         .on('change', function(){
             changeUserSettings('contextMenuEnabled', this.checked);
         });
+
+    uDom('#experimental-enabled')
+        .prop('checked', details.experimentalEnabled === true)
+        .on('change', function(){
+            changeUserSettings('experimentalEnabled', this.checked);
+        });
 };
 
 messaging.ask({ what: 'userSettings' }, onUserSettingsReceived);

js/storage.js

@@ -669,6 +669,7 @@
     var onUserSettingsReady = function(settings) {
         µb.contextMenu.toggle(settings.contextMenuEnabled);
         µb.fromSelfie(onSelfieReady);
+        µb.mirrors.toggle(settings.experimentalEnabled);
     };
 
     this.loadUserSettings(onUserSettingsReady);

js/traffic.js

@@ -104,6 +104,14 @@ var onBeforeRequest = function(details) {
             pageStore.addFrame(frameId, requestURL);
         }
 
+        if ( µb.userSettings.experimentalEnabled ) {
+            var redirectURL = µb.mirrors.toURL(requestURL, true);
+            if ( redirectURL !== '' ) {
+                //console.debug('"%s" redirected to "%s..."', requestURL.slice(0, 50), redirectURL.slice(0, 50));
+                return { redirectUrl: redirectURL };
+            }
+        }
+
         //console.debug('µBlock> onBeforeRequest()> ALLOW "%s" (%o)', details.url, details);
         return;
     }

js/ublock.js

@@ -213,7 +213,12 @@
     // Post-change
     switch ( name ) {
         case 'contextMenuEnabled':
-            this.contextMenu.toggle(value === true);
+            this.contextMenu.toggle(value);
+            break;
+        case 'experimentalEnabled':
+            if ( typeof this.mirrors === 'object' ) {
+                this.mirrors.toggle(value);
+            }
             break;
         default:
             break;

settings.html

@@ -9,6 +9,9 @@
 ul {
     list-style-type: none;
     }
+#experimental-enabled {
+    margin-top: 1em;
+    }
 </style>
 </head>
 
@@ -18,6 +21,8 @@ ul {
     <li><input id="collapse-blocked" type="checkbox"> <label data-i18n="settingsCollapseBlockedPrompt"></label>
     <li><input id="icon-badge" type="checkbox"> <label data-i18n="settingsIconBadgePrompt"></label>
     <li><input id="context-menu-enabled" type="checkbox"><label data-i18n="settingsContextMenuPrompt"></label>
+    <li><input id="experimental-enabled" type="checkbox"><label data-i18n="settingsExperimentalPrompt"></label>
+    (<a href="https://github.com/gorhill/uBlock/wiki/Experimental-features" style="font-style:italic">Experimental features</a>)
 </ul>
 
 <script src="js/udom.js"></script>