fix #2919

src/js/background.js

@@ -153,9 +153,14 @@ var µBlock = (function() { // jshint ignore:line
         noopFunc: function(){},
 
         apiErrorCount: 0,
-        mouseX: -1,
+
-        mouseY: -1,
+        mouseEventRegister: {
-        mouseURL: '',
+            tabId: '',
+            x: -1,
+            y: -1,
+            url: ''
+        },
+
         epickerTarget: '',
         epickerZap: false,
         epickerEprom: null,

src/js/commands.js

@@ -35,10 +35,8 @@
         case 'launch-element-zapper':
         case 'launch-element-picker':
             vAPI.tabs.get(null, function(tab) {
-                if ( tab instanceof Object === false ) {
+                if ( tab instanceof Object === false ) { return; }
-                    return;
+                µb.mouseEventRegister.x = µb.mouseEventRegister.y = -1;
-                }
-                µb.mouseX = µb.mouseY = -1;
                 µb.elementPickerExec(tab.id, undefined, command === 'launch-element-zapper');
             });
             break;

src/js/contentscript.js

@@ -1659,7 +1659,7 @@ vAPI.domIsLoaded = function(ev) {
                 what: 'mouseClick',
                 x: ev.clientX,
                 y: ev.clientY,
-                url: elem !== null ? elem.href : ''
+                url: elem !== null && ev.isTrusted !== false ? elem.href : ''
             }
         );
     };

src/js/messaging.js

@@ -88,7 +88,10 @@ var onMessage = function(request, sender, callback) {
         break;
     }
 
-    var tabId = sender && sender.tab ? sender.tab.id : 0;
+    // The concatenation with the empty string ensure that the resulting value
+    // is a string. This is important since tab id values are assumed to be
+    // of string type.
+    var tabId = sender && sender.tab ? '' + sender.tab.id : 0;
 
     // Sync
     var response;
@@ -137,7 +140,7 @@ var onMessage = function(request, sender, callback) {
 
     case 'launchElementPicker':
         // Launched from some auxiliary pages, clear context menu coords.
-        µb.mouseX = µb.mouseY = -1;
+        µb.mouseEventRegister.x = µb.mouseEventRegister.y = -1;
         µb.elementPickerExec(request.tabId, request.targetURL, request.zap);
         break;
 
@@ -146,9 +149,10 @@ var onMessage = function(request, sender, callback) {
         break;
 
     case 'mouseClick':
-        µb.mouseX = request.x;
+        µb.mouseEventRegister.tabId = tabId;
-        µb.mouseY = request.y;
+        µb.mouseEventRegister.x = request.x;
-        µb.mouseURL = request.url;
+        µb.mouseEventRegister.y = request.y;
+        µb.mouseEventRegister.url = request.url;
         break;
 
     case 'reloadTab':
@@ -560,15 +564,14 @@ var onMessage = function(request, sender, callback) {
             callback({
                 frameContent: this.responseText.replace(reStrings, replacer),
                 target: µb.epickerTarget,
-                clientX: µb.mouseX,
+                clientX: µb.mouseEventRegister.x,
-                clientY: µb.mouseY,
+                clientY: µb.mouseEventRegister.y,
                 zap: µb.epickerZap,
                 eprom: µb.epickerEprom
             });
 
             µb.epickerTarget = '';
-            µb.mouseX = -1;
+            µb.mouseEventRegister.x = µb.mouseEventRegister.y = -1;
-            µb.mouseY = -1;
         };
         xhr.send();
         return;

src/js/tab.js

@@ -1,7 +1,7 @@
 /*******************************************************************************
 
     uBlock Origin - a browser extension to block requests.
-    Copyright (C) 2014-2016 Raymond Hill
+    Copyright (C) 2014-2017 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
@@ -536,22 +536,16 @@ vAPI.tabs.onPopupUpdated = (function() {
     var areDifferentURLs = function(a, b) {
         // https://github.com/gorhill/uBlock/issues/1378
         // Maybe no link element was clicked.
-        if ( b === '' ) {
+        if ( b === '' ) { return true; }
-            return true;
-        }
         var pos = a.indexOf('://');
-        if ( pos === -1 ) {
+        if ( pos === -1 ) { return false; }
-            return false;
-        }
         a = a.slice(pos);
         pos = b.indexOf('://');
-        if ( pos === -1 ) {
+        if ( pos === -1 ) { return false; }
-            return false;
-        }
         return b.slice(pos) !== a;
     };
 
-    var popupMatch = function(openerURL, targetURL, clickedURL, popupType) {
+    var popupMatch = function(openerURL, targetURL, popupType) {
         var openerHostname = µb.URI.hostnameFromURI(openerURL),
             openerDomain = µb.URI.domainFromHostname(openerHostname),
             result;
@@ -584,17 +578,12 @@ vAPI.tabs.onPopupUpdated = (function() {
         if ( openerHostname !== '' && targetURL !== 'about:blank' ) {
             // Check per-site switch first
             if ( µb.hnSwitches.evaluateZ('no-popups', openerHostname) === true ) {
-                if (
-                    typeof clickedURL === 'string' &&
-                    areDifferentURLs(targetURL, clickedURL)
-                ) {
                 logData = {
                     source: 'switch',
                     raw: 'no-popups: ' + µb.hnSwitches.z + ' true'
                 };
                 return 1;
             }
-            }
 
             // https://github.com/gorhill/uBlock/issues/581
             //   Take into account popup-specific rules in dynamic URL filtering, OR
@@ -736,9 +725,18 @@ vAPI.tabs.onPopupUpdated = (function() {
             }
         }
 
+        // https://github.com/gorhill/uBlock/issues/2919
+        // - The target tab matches a clicked link, assume it's legit.
+        if (
+            openerTabId === µb.mouseEventRegister.tabId &&
+            areDifferentURLs(targetURL, µb.mouseEventRegister.url) === false
+        ) {
+            return;
+        }
+
         // Popup test.
         var popupType = 'popup',
-            result = popupMatch(openerURL, targetURL, µb.mouseURL, 'popup');
+            result = popupMatch(openerURL, targetURL, 'popup');
 
         // Popunder test.
         if ( result === 0 ) {