new way of handling blocked documents

src/_locales/en/messages.json

@@ -572,6 +572,22 @@
         "description": "Message asking user to confirm reset"
     },
 
+    "mainBlockedPrompt1": {
+        "message": "uMatrix has prevented the following page from loading:",
+        "description": "English: uMatrix has prevented the following page from loading:"
+    },
+    "mainBlockedPrompt2": {
+        "message": "Because of the following rule",
+        "description": "English: Because of the following rule"
+    },
+    "mainBlockedBack" : {
+        "message": "Go back",
+        "description": "English: Go back"
+    },
+    "mainBlockedClose" : {
+        "message": "Close",
+        "description": "English: Close"
+    },
 
     "commandRevertAll" : {
         "message": "Remove all temporary changes",

src/js/background.js

@@ -123,8 +123,6 @@ return {
     behindTheSceneScope: 'behind-the-scene',
 
     // Commonly encountered strings
-    chromeExtensionURLPrefix: 'chrome-extension://',
-    noopCSSURL: vAPI.getURL('css/noop.css'),
     fontCSSURL: vAPI.getURL('css/fonts/Roboto_Condensed/RobotoCondensed-Regular.ttf'),
 
     noopFunc: function(){},

src/js/main-blocked.js

@@ -0,0 +1,76 @@
+/*******************************************************************************
+
+    µMatrix - a browser extension to block requests.
+    Copyright (C) 2015 Raymond Hill
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 this program.  If not, see {http://www.gnu.org/licenses/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+/* global uDom */
+
+/******************************************************************************/
+
+(function() {
+
+'use strict';
+
+/******************************************************************************/
+
+var details = {};
+
+(function() {
+    var matches = /details=([^&]+)/.exec(window.location.search);
+    if ( matches === null ) {
+        return;
+    }
+    details = JSON.parse(atob(matches[1]));
+})();
+
+/******************************************************************************/
+
+uDom('.what').text(details.url);
+uDom('#why').text(details.why.slice(3));
+
+if ( window.history.length > 1 ) {
+    uDom('#back').on('click', function() { window.history.back(); });
+    uDom('#bye').css('display', 'none');
+} else {
+    uDom('#bye').on('click', function() { window.close(); });
+    uDom('#back').css('display', 'none');
+}
+
+/******************************************************************************/
+
+// See if the target hostname is still blacklisted, and if not, navigate to it.
+
+var messager = vAPI.messaging.channel('main-blocked.js');
+
+messager.send({
+    what: 'mustBlock',
+    scope: details.hn,
+    hostname: details.hn,
+    type: 'doc'
+}, function(response) {
+    if ( response === false ) {
+        window.location.replace(details.url);
+    }
+});
+
+/******************************************************************************/
+
+})();
+
+/******************************************************************************/

src/js/messaging.js

@@ -71,6 +71,14 @@ function onMessage(request, sender, callback) {
         µm.utils.gotoURL(request);
         break;
 
+    case 'mustBlock':
+        response = µm.mustBlock(
+            request.scope,
+            request.hostname,
+            request.type
+        );
+        break;
+
     case 'reloadHostsFiles':
         µm.reloadHostsFiles();
         break;
@@ -168,7 +176,7 @@ var matrixSnapshot = function(tabId, details) {
 
     // Allow examination of behind-the-scene requests
     if (
-        tabContext.rawURL.lastIndexOf(vAPI.getURL(''), 0) === 0 ||
+        tabContext.rawURL.lastIndexOf(vAPI.getURL('dashboard.html'), 0) === 0 ||
         tabContext.rawURL === µm.behindTheSceneURL
     ) {
         tabId = µm.behindTheSceneTabId;

src/js/tab.js

@@ -49,6 +49,20 @@ var µm = µMatrix;
     if ( vAPI.isBehindTheSceneTabId(tabId) ) {
         return 'http://behind-the-scene/';
     }
+
+    // If the URL is that of our "blocked page" document, return the URL of
+    // the blocked page.
+    if ( pageURL.lastIndexOf(vAPI.getURL('main-blocked.html'), 0) === 0 ) {
+        var matches = /main-blocked\.html\?details=([^&]+)/.exec(pageURL);
+        if ( matches && matches.length === 2 ) {
+            try {
+                var details = JSON.parse(atob(matches[1]));
+                pageURL = details.url;
+            } catch (e) {
+            }
+        }
+    }
+
     var uri = this.URI.set(pageURL);
     var scheme = uri.scheme;
     if ( scheme === 'https' || scheme === 'http' ) {
@@ -453,13 +467,6 @@ vAPI.tabs.registerListeners();
         return this.pageStores[tabId];
     }
 
-    // https://github.com/gorhill/httpswitchboard/issues/303
-    // Don't rebind pages blocked by µMatrix.
-    var blockedRootFramePrefix = this.webRequest.blockedRootFramePrefix;
-    if ( tabContext.rawURL.lastIndexOf(blockedRootFramePrefix, 0) === 0 ) {
-        return null;
-    }
-
     var normalURL = tabContext.normalURL;
     var pageStore = this.pageStores[tabId] || null;
 

src/js/traffic.js

@@ -33,65 +33,6 @@
 // The `id='uMatrix'` is important, it allows µMatrix to detect whether a
 // specific data URI originates from itself.
 
-var rootFrameReplacement = [
-    '<!DOCTYPE html><html id="uMatrix">',
-    '<head>',
-    '<meta charset="utf-8" />',
-    '<style>',
-    '@font-face {',
-        'font-family:httpsb;',
-        'font-style:normal;',
-        'font-weight:400;',
-        'src: local("httpsb"),url("', µMatrix.fontCSSURL, '") format("truetype");',
-    '}',
-    'body {',
-        'margin:0;',
-        'border:0;',
-        'padding:0;',
-        'font:15px httpsb,sans-serif;',
-        'width:100%;',
-        'height:100%;',
-        'background-color:transparent;',
-        'background-size:10px 10px;',
-        'background-image:',
-        'repeating-linear-gradient(',
-            '-45deg,',
-            'rgba(204,0,0,0.5),rgba(204,0,0,0.5) 24%,',
-            'transparent 26%,transparent 49%,',
-            'rgba(204,0,0,0.5) 51%,rgba(204,0,0,0.5) 74%,',
-            'transparent 76%,transparent',
-        ');',
-        'text-align: center;',
-    '}',
-    '#p {',
-        'margin:8px;',
-        'padding:4px;',
-        'display:inline-block;',
-        'background-color:white;',
-    '}',
-    '#t {',
-        'margin:2px;',
-        'border:0;',
-        'padding:0 2px;',
-        'display:inline-block;',
-    '}',
-    '#t b {',
-        'padding:0 4px;',
-        'background-color:#eee;',
-        'font-weight:normal;',
-    '}',
-    '</style>',
-    '<link href="{{cssURL}}?url={{originalURL}}&hostname={{hostname}}&t={{now}}" rel="stylesheet" type="text/css">',
-    '<title>Blocked by &mu;Matrix</title>',
-    '</head>',
-    '<body>',
-        '<div id="p">',
-        '<div id="t"><b>{{hostname}}</b> blocked by &mu;Matrix</div>',
-        '</div>',
-    '</body>',
-    '</html>'
-].join('');
-
 var subFrameReplacement = [
     '<!DOCTYPE html>',
     '<html>',
@@ -152,43 +93,6 @@ var subFrameReplacement = [
 
 /******************************************************************************/
 
-// If it is HTTP Switchboard's root frame replacement URL, verify that
-// the page that was blacklisted is still blacklisted, and if not,
-// redirect to the previously blacklisted page.
-
-var onBeforeChromeExtensionRequestHandler = function(details) {
-    var requestURL = details.url;
-
-    // console.debug('onBeforeChromeExtensionRequestHandler()> "%s": %o', details.url, details);
-
-    // rhill 2013-12-10: Avoid regex whenever a faster indexOf() can be used:
-    // here we can use fast indexOf() as a first filter -- which is executed
-    // for every single request (so speed matters).
-    var matches = requestURL.match(/url=([^&]+)&hostname=([^&]+)/);
-    if ( !matches ) {
-        return;
-    }
-
-    var µm = µMatrix;
-    var pageURL = decodeURIComponent(matches[1]);
-    var pageHostname = decodeURIComponent(matches[2]);
-
-    // Blacklisted as per matrix?
-    if ( µm.mustBlock(µm.scopeFromURL(pageURL), pageHostname, 'doc') ) {
-        return;
-    }
-
-    µMatrix.asyncJobs.add(
-        'gotoURL-' + details.tabId,
-        { tabId: details.tabId, url: pageURL },
-        µm.utils.gotoURL,
-        200,
-        false
-    );
-};
-
-/******************************************************************************/
-
 // Intercept and filter web requests according to white and black lists.
 
 var onBeforeRootFrameRequestHandler = function(details) {
@@ -199,7 +103,7 @@ var onBeforeRootFrameRequestHandler = function(details) {
     µm.tabContextManager.push(tabId, requestURL);
 
     var tabContext = µm.tabContextManager.mustLookup(tabId);
-    var pageStore = µm.bindTabToPageStats(tabId, 'weak');
+    var pageStore = µm.bindTabToPageStats(tabId);
 
     // Disallow request as per matrix?
     var block = µm.mustBlock(tabContext.rootHostname, details.hostname, 'doc');
@@ -215,19 +119,15 @@ var onBeforeRootFrameRequestHandler = function(details) {
     }
 
     // Blocked
+    var query = btoa(JSON.stringify({
+        url: requestURL,
+        hn: details.hostname,
+        why: '?'
+    }));
 
-    // If it's a blacklisted frame, redirect to frame.html
-    // rhill 2013-11-05: The root frame contains a link to noop.css, this
-    // allows to later check whether the root frame has been unblocked by the
-    // user, in which case we are able to force a reload using a redirect.
-    var html = rootFrameReplacement;
-    html = html.replace('{{cssURL}}', µm.noopCSSURL);
-    html = html.replace(/{{hostname}}/g, encodeURIComponent(requestHostname));
-    html = html.replace('{{originalURL}}', encodeURIComponent(requestURL));
-    html = html.replace('{{now}}', String(Date.now()));
-    var dataURI = 'data:text/html;base64,' + btoa(html);
-
-    return { 'redirectUrl': dataURI };
+    vAPI.tabs.replace(tabId, vAPI.getURL('main-blocked.html?details=') + query);
+
+    return { cancel: true };
 };
 
 /******************************************************************************/
@@ -258,11 +158,6 @@ var onBeforeRequestHandler = function(details) {
 
     var requestURL = details.url;
 
-    // Is it µMatrix's noop css file?
-    if ( requestType === 'css' && requestURL.lastIndexOf(µm.noopCSSURL, 0) === 0 ) {
-        return onBeforeChromeExtensionRequestHandler(details);
-    }
-
     // Ignore non-http schemes
     if ( requestScheme.indexOf('http') !== 0 ) {
         return;
@@ -603,8 +498,7 @@ var requestTypeNormalizer = {
 vAPI.net.onBeforeRequest = {
     urls: [
         "http://*/*",
-        "https://*/*",
-        "chrome-extension://*/*"
+        "https://*/*"
     ],
     extra: [ 'blocking' ],
     callback: onBeforeRequestHandler
@@ -641,7 +535,6 @@ var start = function() {
 /******************************************************************************/
 
 return {
-    blockedRootFramePrefix: 'data:text/html;base64,' + btoa(rootFrameReplacement).slice(0, 80),
     start: start
 };
 

src/main-blocked.html

@@ -0,0 +1,72 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title></title>
+<link rel="stylesheet" href="css/common.css" type="text/css">
+<style>
+body {
+    font-family: sans-serif;
+    font-size: large;
+    text-align: center;
+    }
+body > div {
+    margin: 1.5em 0;
+    }
+body > div > p {
+    margin: 4px 0;
+    }
+body > div > p:first-child {
+    margin: 1.5em 0 0 0;
+    }
+.code {
+    background-color: rgba(0, 0, 0, 0.1);
+    display: inline-block;
+    font-family: monospace;
+    font-size: large;
+    line-height: 1;
+    padding: 2px 4px;
+    word-break: break-all;
+    }
+button {
+    cursor: pointer;
+    margin: 0 1em 0.25em 1em;
+    padding: 0.25em 0.5em;
+    font-size: inherit;
+    }
+#warningSign {
+    margin: 1e, 0;
+    opacity: 1;
+    pointer-events: none;
+    width: 100%;
+    }
+#warningSign > span {
+    color: #f2a500;
+    font-size: 180px;
+    }
+</style>
+</head>
+<body>
+<div id="warningSign"><span class="fa">&#xf071;</span></div>
+<div>
+    <p data-i18n="mainBlockedPrompt1"></p>
+    <p class="what code"></p>
+    </div>
+
+<!-- <div>
+    <p data-i18n="mainBlockedPrompt2"></p>
+    <p id="why" class="code"></p>
+    </div>
+    -->
+
+<div>
+    <p><button id="back" data-i18n="mainBlockedBack" type="button"></button>
+    <button id="bye" data-i18n="mainBlockedClose" type="button"></button></p>
+    </div>
+
+<script src="js/vapi-common.js"></script>
+<script src="js/vapi-client.js"></script>
+<script src="js/udom.js"></script>
+<script src="js/i18n.js"></script>
+<script src="js/main-blocked.js"></script>
+</body>
+</html>