noVNC 1.4.0

Changing the ::after element to be displayed as 'block' lets it be
positioned using relative. This means we can remove the confusing
"position: relative" from the checkbox.

.eslintignore

@@ -0,0 +1 @@
+**/xtscancodes.js

.eslintrc

@@ -0,0 +1,54 @@
+{
+    "env": {
+        "browser": true,
+        "es2020": true
+    },
+    "parserOptions": {
+        "sourceType": "module",
+        "ecmaVersion": 2020
+    },
+    "extends": "eslint:recommended",
+    "rules": {
+        // Unsafe or confusing stuff that we forbid
+
+        "no-unused-vars": ["error", { "vars": "all", "args": "none", "ignoreRestSiblings": true }],
+        "no-constant-condition": ["error", { "checkLoops": false }],
+        "no-var": "error",
+        "no-useless-constructor": "error",
+        "object-shorthand": ["error", "methods", { "avoidQuotes": true }],
+        "prefer-arrow-callback": "error",
+        "arrow-body-style": ["error", "as-needed", { "requireReturnForObjectLiteral": false } ],
+        "arrow-parens": ["error", "as-needed", { "requireForBlockBody": true }],
+        "arrow-spacing": ["error"],
+        "no-confusing-arrow": ["error", { "allowParens": true }],
+
+        // Enforced coding style
+
+        "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
+        "indent": ["error", 4, { "SwitchCase": 1,
+                                 "VariableDeclarator": "first",
+                                 "FunctionDeclaration": { "parameters": "first" },
+                                 "FunctionExpression": { "parameters": "first" },
+                                 "CallExpression": { "arguments": "first" },
+                                 "ArrayExpression": "first",
+                                 "ObjectExpression": "first",
+                                 "ImportDeclaration": "first",
+                                 "ignoreComments": true }],
+        "comma-spacing": ["error"],
+        "comma-style": ["error"],
+        "curly": ["error", "multi-line"],
+        "func-call-spacing": ["error"],
+        "func-names": ["error"],
+        "func-style": ["error", "declaration", { "allowArrowFunctions": true }],
+        "key-spacing": ["error"],
+        "keyword-spacing": ["error"],
+        "no-trailing-spaces": ["error"],
+        "semi": ["error"],
+        "space-before-blocks": ["error"],
+        "space-before-function-paren": ["error", { "anonymous": "always",
+                                                   "named": "never",
+                                                   "asyncArrow": "always" }],
+        "switch-colon-spacing": ["error"],
+        "camelcase": ["error", { allow: ["^XK_", "^XF86XK_"] }],
+    }
+}

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,34 @@
+---
+name: Bug report
+about: Create a report to help us improve
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Client (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Browser: [e.g. chrome, safari]
+ - Browser version: [e.g. 22]
+
+**Server (please complete the following information):**
+ - noVNC version: [e.g. 1.0.0 or git commit id]
+ - VNC server: [e.g. QEMU, TigerVNC]
+ - WebSocket proxy: [e.g. websockify]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Question or discussion
+    url: https://groups.google.com/forum/?fromgroups#!forum/novnc
+    about: Ask a question or start a discussion

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,17 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/deploy.yml

@@ -0,0 +1,97 @@
+name: Publish
+
+on:
+  push:
+  pull_request:
+  release:
+    types: [published]
+
+jobs:
+  npm:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: |
+          GITREV=$(git rev-parse --short HEAD)
+          echo $GITREV
+          sed -i "s/^\(.*\"version\".*\)\"\([^\"]\+\)\"\(.*\)\$/\1\"\2-g$GITREV\"\3/" package.json
+        if: github.event_name != 'release'
+      - uses: actions/setup-node@v3
+        with:
+          # Needs to be explicitly specified for auth to work
+          registry-url: 'https://registry.npmjs.org'
+      - run: npm install
+      - uses: actions/upload-artifact@v3
+        with:
+          name: npm
+          path: lib
+      - run: npm publish --access public
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+        if: |
+          github.repository == 'novnc/noVNC' &&
+          github.event_name == 'release' &&
+          !github.event.release.prerelease
+      - run: npm publish --access public --tag beta
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+        if: |
+          github.repository == 'novnc/noVNC' &&
+          github.event_name == 'release' &&
+          github.event.release.prerelease
+      - run: npm publish --access public --tag dev
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+        if: |
+          github.repository == 'novnc/noVNC' &&
+          github.event_name == 'push' &&
+          github.event.ref == 'refs/heads/master'
+  snap:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: |
+          GITREV=$(git rev-parse --short HEAD)
+          echo $GITREV
+          sed -i "s/^\(.*\"version\".*\)\"\([^\"]\+\)\"\(.*\)\$/\1\"\2-g$GITREV\"\3/" package.json
+        if: github.event_name != 'release'
+      - run: |
+          VERSION=$(grep '"version"' package.json | cut -d '"' -f 4)
+          echo $VERSION
+          sed -i "s/^version:.*/version: '$VERSION'/" snap/snapcraft.yaml
+      - uses: snapcore/action-build@v1
+        id: snapcraft
+      - uses: actions/upload-artifact@v3
+        with:
+          name: snap
+          path: ${{ steps.snapcraft.outputs.snap }}
+      - uses: snapcore/action-publish@v1
+        with:
+          snap: ${{ steps.snapcraft.outputs.snap }}
+          release: stable
+        env:
+          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_LOGIN }}
+        if: |
+          github.repository == 'novnc/noVNC' &&
+          github.event_name == 'release' &&
+          !github.event.release.prerelease
+      - uses: snapcore/action-publish@v1
+        with:
+          snap: ${{ steps.snapcraft.outputs.snap }}
+          release: beta
+        env:
+          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_LOGIN }}
+        if: |
+          github.repository == 'novnc/noVNC' &&
+          github.event_name == 'release' &&
+          github.event.release.prerelease
+      - uses: snapcore/action-publish@v1
+        with:
+          snap: ${{ steps.snapcraft.outputs.snap }}
+          release: edge
+        env:
+          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_LOGIN }}
+        if: |
+          github.repository == 'novnc/noVNC' &&
+          github.event_name == 'push' &&
+          github.event.ref == 'refs/heads/master'

.github/workflows/lint.yml

@@ -0,0 +1,19 @@
+name: Lint
+
+on: [push, pull_request]
+
+jobs:
+  eslint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+      - run: npm update
+      - run: npm run lint
+  html:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+      - run: npm update
+      - run: git ls-tree --name-only -r HEAD | grep -E "[.](html|css)$" | xargs ./utils/validate

.github/workflows/test.yml

@@ -0,0 +1,28 @@
+name: Test
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+        browser:
+          - ChromeHeadless
+          - FirefoxHeadless
+        include:
+          - os: macos-latest
+            browser: Safari
+          - os: windows-latest
+            browser: EdgeHeadless
+      fail-fast: false
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+      - run: npm update
+      - run: npm run test
+        env:
+          TEST_BROWSER_NAME: ${{ matrix.browser }}

.github/workflows/translate.yml

@@ -0,0 +1,15 @@
+name: Translate
+
+on: [push, pull_request]
+
+jobs:
+  translate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+      - run: npm update
+      - run: sudo apt-get install gettext
+      - run: make -C po update-pot
+      - run: make -C po update-po
+      - run: make -C po update-js

.npmignore

@@ -1,37 +0,0 @@
-# infra JS
-/build/
-/node_modules/
-/tests/
-/utils/
-/recordings/
-/vendor/sinon.js
-
-# noVNC application files
-/app
-/vendor/browser-es-module-loader
-/vendor/promise.js
-/vnc.html
-/vnc_lite.html
-
-# raw translation files
-/po
-
-# config files
-/.travis.yml
-/karma.conf.js
-
-# various other files
-/.gitmodules
-.*
-*~
-*.swp
-*.swo
-
-# documentation (except licenses)
-/docs/notes
-/docs/links
-/docs/release.txt
-/docs/rfb_notes
-/docs/*.pdf
-/docs/flash_policy.txt
-/CONTRIBUTING.md

.travis.yml

@@ -1,38 +0,0 @@
-language: node_js
-sudo: false
-cache:
-  directories:
-  - node_modules
-node_js:
-- '6.1'
-env:
-  matrix:
-  - TEST_BROWSER_NAME=chrome TEST_BROWSER_OS='Windows 10,Linux,OS X 10.11'
-  - TEST_BROWSER_NAME=firefox TEST_BROWSER_OS='Windows 10,Linux,OS X 10.11'
-  - TEST_BROWSER_NAME='internet explorer' TEST_BROWSER_OS='Windows 10'
-  - TEST_BROWSER_NAME=safari TEST_BROWSER_OS='OS X 10.11'
-before_script: npm install -g karma-cli
-addons:
-  sauce_connect:
-    username: "directxman12"
-  jwt:
-    secure: "d3ekMYslpn6R4f0ajtRMt9SUFmNGDiItHpqaXC5T4KI0KMEsxgvEOfJot5PiFFJWg1DSpJZH6oaW2UxGZ3duJLZrXIEd/JePY8a6NtT35BNgiDPgcp+eu2Bu3rhrSNg7/HEsD1ma+JeUTnv18Ai5oMFfCCQJx2J6osIxyl/ZVxA="
-stages:
-- test
-- name: deploy
-  if: tag is PRESENT
-jobs:
-  include:
-  - stage: deploy
-    script: skip
-    before_script: skip
-    deploy:
-      provider: npm
-      email: directxman12+npm@gmail.com
-      api_key:
-        secure: cIidkFmvkdmdwWsqBpxyPUCzBqgK8LhPiNxTrIfhwbUunMsJep9MiiBJtv8poVYG2Y4yfiZmqGn4nfetUdc/LDctd73j+/EM4Z/NUDexVAhJ+9/qCogvpJsSQ96VQo7yBceW4E1fBM3WCU0kcGToYIVSSrwvvRDtJfeYJf2Qqw0=
-      on:
-        tags: true
-        repo: novnc/noVNC
-
-

AUTHORS

@@ -0,0 +1,13 @@
+maintainers:
+- Samuel Mannehed for Cendio AB (@samhed)
+- Pierre Ossman for Cendio AB (@CendioOssman)
+maintainersEmeritus:
+- Joel Martin (@kanaka)
+- Solly Ross (@directxman12)
+- @astrand 
+contributors:
+# There are a bunch of people that should be here.
+# If you want to be on this list, feel free send a PR
+# to add yourself.
+- jalf <git@jalf.dk>
+- NTT corp.

LICENSE.txt

@@ -1,4 +1,5 @@
-noVNC is Copyright (C) 2011 Joel Martin <github@martintribe.org>
+noVNC is Copyright (C) 2022 The noVNC Authors
+(./AUTHORS)
 
 The noVNC core library files are licensed under the MPL 2.0 (Mozilla
 Public License 2.0). The noVNC core library is composed of the
@@ -41,12 +42,6 @@ licenses (all MPL 2.0 compatible):
 
     vendor/pako/            : MIT
 
-    vendor/browser-es-module-loader/src/ : MIT
-
-    vendor/browser-es-module-loader/dist/ : Various BSD style licenses
-
-    vendor/promise.js       : MIT
-
 Any other files not mentioned above are typically marked with
 a copyright/license header at the top of the file. The default noVNC
 license is MPL-2.0.

README.md

@@ -1,6 +1,7 @@
 ## noVNC: HTML VNC Client Library and Application
 
-[![Build Status](https://travis-ci.org/novnc/noVNC.svg?branch=master)](https://travis-ci.org/novnc/noVNC)
+[![Test Status](https://github.com/novnc/noVNC/workflows/Test/badge.svg)](https://github.com/novnc/noVNC/actions?query=workflow%3ATest)
+[![Lint Status](https://github.com/novnc/noVNC/workflows/Lint/badge.svg)](https://github.com/novnc/noVNC/actions?query=workflow%3ALint)
 
 ### Description
 
@@ -24,6 +25,7 @@ for a more complete list with additional info and links.
 - [Browser Requirements](#browser-requirements)
 - [Server Requirements](#server-requirements)
 - [Quick Start](#quick-start)
+- [Installation from Snap Package](#installation-from-snap-package)
 - [Integration and Deployment](#integration-and-deployment)
 - [Authors/Contributors](#authorscontributors)
 
@@ -63,10 +65,16 @@ Please tweet [@noVNC](http://www.twitter.com/noVNC) if you do.
 ### Features
 
 * Supports all modern browsers including mobile (iOS, Android)
-* Supported VNC encodings: raw, copyrect, rre, hextile, tight, tightPNG
+* Supported authentication methods: none, classical VNC, RealVNC's
+  RSA-AES, Tight, VeNCrypt Plain, XVP, Apple's Diffie-Hellman,
+  UltraVNC's MSLogonII
+* Supported VNC encodings: raw, copyrect, rre, hextile, tight, tightPNG,
+  ZRLE, JPEG
 * Supports scaling, clipping and resizing the desktop
 * Local cursor rendering
-* Clipboard copy/paste
+* Clipboard copy/paste with full Unicode support
+* Translations
+* Touch gestures for emulating common mouse actions
 * Licensed mainly under the [MPL 2.0](http://www.mozilla.org/MPL/2.0/), see
   [the license document](LICENSE.txt) for details
 
@@ -87,7 +95,7 @@ noVNC uses many modern web technologies so a formal requirement list is
 not available. However these are the minimum versions we are currently
 aware of:
 
-* Chrome 49, Firefox 44, Safari 10, Opera 36, IE 11, Edge 12
+* Chrome 64, Firefox 79, Safari 13.4, Opera 51, Edge 79
 
 
 ### Server Requirements
@@ -104,16 +112,85 @@ proxy.
 
 ### Quick Start
 
-* Use the launch script to automatically download and start websockify, which
+* Use the `novnc_proxy` script to automatically download and start websockify, which
   includes a mini-webserver and the WebSockets proxy. The `--vnc` option is
   used to specify the location of a running VNC server:
 
-    `./utils/launch.sh --vnc localhost:5901`
+    `./utils/novnc_proxy --vnc localhost:5901`
+    
+* If you don't need to expose the web server to public internet, you can
+  bind to localhost:
+  
+    `./utils/novnc_proxy --vnc localhost:5901 --listen localhost:6081`
 
-* Point your browser to the cut-and-paste URL that is output by the launch
+* Point your browser to the cut-and-paste URL that is output by the `novnc_proxy`
   script. Hit the Connect button, enter a password if the VNC server has one
   configured, and enjoy!
 
+### Installation from Snap Package
+Running the command below will install the latest release of noVNC from Snap:
+
+`sudo snap install novnc`
+
+#### Running noVNC from Snap Directly
+
+You can run the Snap-package installed novnc directly with, for example:
+
+`novnc --listen 6081 --vnc localhost:5901 # /snap/bin/novnc if /snap/bin is not in your PATH`
+
+If you want to use certificate files, due to standard Snap confinement restrictions you need to have them in the /home/\<user\>/snap/novnc/current/ directory. If your username is jsmith an example command would be:
+  
+  `novnc --listen 8443 --cert ~jsmith/snap/novnc/current/self.crt --key ~jsmith/snap/novnc/current/self.key --vnc ubuntu.example.com:5901`
+
+#### Running noVNC from Snap as a Service (Daemon)
+The Snap package also has the capability to run a 'novnc' service which can be 
+configured to listen on multiple ports connecting to multiple VNC servers 
+(effectively a service runing multiple instances of novnc).
+Instructions (with example values):
+
+List current services (out-of-box this will be blank):
+
+```
+sudo snap get novnc services
+Key             Value
+services.n6080  {...}
+services.n6081  {...}
+```
+
+Create a new service that listens on port 6082 and connects to the VNC server 
+running on port 5902 on localhost:
+
+`sudo snap set novnc services.n6082.listen=6082 services.n6082.vnc=localhost:5902`
+
+(Any services you define with 'snap set' will be automatically started)
+Note that the name of the service, 'n6082' in this example, can be anything 
+as long as it doesn't start with a number or contain spaces/special characters.
+
+View the configuration of the service just created:
+
+```
+sudo snap get novnc services.n6082
+Key                    Value
+services.n6082.listen  6082
+services.n6082.vnc     localhost:5902
+```
+
+Disable a service (note that because of a limitation in  Snap it's currently not 
+possible to unset config variables, setting them to blank values is the way 
+to disable a service):
+
+`sudo snap set novnc services.n6082.listen='' services.n6082.vnc=''`
+
+(Any services you set to blank with 'snap set' like this will be automatically stopped)
+
+Verify that the service is disabled (blank values):
+
+```
+sudo snap get novnc services.n6082
+Key                    Value
+services.n6082.listen  
+services.n6082.vnc
+```
 
 ### Integration and Deployment
 
@@ -126,17 +203,22 @@ or deploying the noVNC application in production environments:
 
 ### Authors/Contributors
 
+See [AUTHORS](AUTHORS) for a (full-ish) list of authors.  If you're not on
+that list and you think you should be, feel free to send a PR to fix that.
+
 * Core team:
-    * [Joel Martin](https://github.com/kanaka)
     * [Samuel Mannehed](https://github.com/samhed) (Cendio)
-    * [Peter Åstrand](https://github.com/astrand) (Cendio)
-    * [Solly Ross](https://github.com/DirectXMan12) (Red Hat / OpenStack)
     * [Pierre Ossman](https://github.com/CendioOssman) (Cendio)
 
+* Previous core contributors:
+    * [Joel Martin](https://github.com/kanaka) (Project founder)
+    * [Solly Ross](https://github.com/DirectXMan12) (Red Hat / OpenStack)
+
 * Notable contributions:
     * UI and Icons : Pierre Ossman, Chris Gordon
     * Original Logo : Michael Sersen
     * tight encoding : Michael Tinglof (Mercuri.ca)
+    * RealVNC RSA AES authentication : USTC Vlab Team
 
 * Included libraries:
     * base64 : Martijn Pieters (Digital Creations 2), Samuel Sieb (sieb.net)

app/error-handler.js

@@ -1,56 +1,79 @@
-// NB: this should *not* be included as a module until we have
-// native support in the browsers, so that our error handler
-// can catch script-loading errors.
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
 
+// Fallback for all uncought errors
+function handleError(event, err) {
+    try {
+        const msg = document.getElementById('noVNC_fallback_errormsg');
 
-(function(){
-    "use strict";
-
-    // Fallback for all uncought errors
-    function handleError (event, err) {
-        try {
-            var msg = document.getElementById('noVNC_fallback_errormsg');
-
-            // Only show the initial error
-            if (msg.hasChildNodes()) {
-                return false;
-            }
-
-            var div = document.createElement("div");
-            div.classList.add('noVNC_message');
-            div.appendChild(document.createTextNode(event.message));
-            msg.appendChild(div);
-
-            if (event.filename) {
-                div = document.createElement("div");
-                div.className = 'noVNC_location';
-                var text = event.filename;
-                if (event.lineno !== undefined) {
-                    text += ":" + event.lineno;
-                    if (event.colno !== undefined) {
-                        text += ":" + event.colno;
-                    }
-                }
-                div.appendChild(document.createTextNode(text));
-                msg.appendChild(div);
-            }
-
-            if (err && (err.stack !== undefined)) {
-                div = document.createElement("div");
-                div.className = 'noVNC_stack';
-                div.appendChild(document.createTextNode(err.stack));
-                msg.appendChild(div);
-            }
-
-            document.getElementById('noVNC_fallback_error')
-                .classList.add("noVNC_open");
-        } catch (exc) {
-            document.write("noVNC encountered an error.");
+        // Work around Firefox bug:
+        // https://bugzilla.mozilla.org/show_bug.cgi?id=1685038
+        if (event.message === "ResizeObserver loop completed with undelivered notifications.") {
+            return false;
         }
-        // Don't return true since this would prevent the error
-        // from being printed to the browser console.
-        return false;
+
+        // Only show the initial error
+        if (msg.hasChildNodes()) {
+            return false;
+        }
+
+        let div = document.createElement("div");
+        div.classList.add('noVNC_message');
+        div.appendChild(document.createTextNode(event.message));
+        msg.appendChild(div);
+
+        if (event.filename) {
+            div = document.createElement("div");
+            div.className = 'noVNC_location';
+            let text = event.filename;
+            if (event.lineno !== undefined) {
+                text += ":" + event.lineno;
+                if (event.colno !== undefined) {
+                    text += ":" + event.colno;
+                }
+            }
+            div.appendChild(document.createTextNode(text));
+            msg.appendChild(div);
+        }
+
+        if (err && err.stack) {
+            div = document.createElement("div");
+            div.className = 'noVNC_stack';
+            div.appendChild(document.createTextNode(err.stack));
+            msg.appendChild(div);
+        }
+
+        document.getElementById('noVNC_fallback_error')
+            .classList.add("noVNC_open");
+
+    } catch (exc) {
+        document.write("noVNC encountered an error.");
     }
-    window.addEventListener('error', function (evt) { handleError(evt, evt.error); });
-    window.addEventListener('unhandledrejection', function (evt) { handleError(evt.reason, evt.reason); });
-})();
+
+    // Try to disable keyboard interaction, best effort
+    try {
+        // Remove focus from the currently focused element in order to
+        // prevent keyboard interaction from continuing
+        if (document.activeElement) { document.activeElement.blur(); }
+
+        // Don't let any element be focusable when showing the error
+        let keyboardFocusable = 'a[href], button, input, textarea, select, details, [tabindex]';
+        document.querySelectorAll(keyboardFocusable).forEach((elem) => {
+            elem.setAttribute("tabindex", "-1");
+        });
+    } catch (exc) {
+        // Do nothing
+    }
+
+    // Don't return true since this would prevent the error
+    // from being printed to the browser console.
+    return false;
+}
+
+window.addEventListener('error', evt => handleError(evt, evt.error));
+window.addEventListener('unhandledrejection', evt => handleError(evt.reason, evt.reason));

app/images/icons/Makefile

@@ -1,42 +1,42 @@
-ICONS := \
-	novnc-16x16.png \
-	novnc-24x24.png \
-	novnc-32x32.png \
-	novnc-48x48.png \
-	novnc-64x64.png
+BROWSER_SIZES := 16 24 32 48 64
+#ANDROID_SIZES := 72 96 144 192
+# FIXME: The ICO is limited to 8 icons due to a Chrome bug:
+#        https://bugs.chromium.org/p/chromium/issues/detail?id=1381393
+ANDROID_SIZES := 96 144 192
+WEB_ICON_SIZES := $(BROWSER_SIZES) $(ANDROID_SIZES)
 
-ANDROID_LAUNCHER := \
-	novnc-48x48.png \
-	novnc-72x72.png \
-	novnc-96x96.png \
-	novnc-144x144.png \
-	novnc-192x192.png
+#IOS_1X_SIZES := 20 29 40 76 # No such devices exist anymore
+IOS_2X_SIZES := 40 58 80 120 152 167
+IOS_3X_SIZES := 60 87 120 180
+ALL_IOS_SIZES := $(IOS_1X_SIZES) $(IOS_2X_SIZES) $(IOS_3X_SIZES)
 
-IPHONE_LAUNCHER := \
-	novnc-60x60.png \
-	novnc-120x120.png
-
-IPAD_LAUNCHER := \
-	novnc-76x76.png \
-	novnc-152x152.png
-
-ALL_ICONS := $(ICONS) $(ANDROID_LAUNCHER) $(IPHONE_LAUNCHER) $(IPAD_LAUNCHER)
+ALL_ICONS := \
+	$(ALL_IOS_SIZES:%=novnc-ios-%.png) \
+	novnc.ico
 
 all: $(ALL_ICONS)
 
-novnc-16x16.png: novnc-icon-sm.svg
-	convert -density 90 \
-		-background transparent "$<" "$@"
-novnc-24x24.png: novnc-icon-sm.svg
-	convert -density 135 \
-		-background transparent "$<" "$@"
-novnc-32x32.png: novnc-icon-sm.svg
-	convert -density 180 \
-		-background transparent "$<" "$@"
+# Our testing shows that the ICO file need to be sorted in largest to
+# smallest to get the apporpriate behviour
+WEB_ICON_SIZES_REVERSE := $(shell echo $(WEB_ICON_SIZES) | tr ' ' '\n' | sort -nr | tr '\n' ' ')
+WEB_BASE_ICONS := $(WEB_ICON_SIZES_REVERSE:%=novnc-%.png)
+.INTERMEDIATE: $(WEB_BASE_ICONS)
 
+novnc.ico: $(WEB_BASE_ICONS)
+	convert $(WEB_BASE_ICONS) "$@"
+
+# General conversion
 novnc-%.png: novnc-icon.svg
-	convert -density $$[`echo $* | cut -d x -f 1` * 90 / 48] \
-		-background transparent "$<" "$@"
+	convert -depth 8 -background transparent \
+		-size $*x$* "$(lastword $^)" "$@"
+
+# iOS icons use their own SVG
+novnc-ios-%.png: novnc-ios-icon.svg
+	convert -depth 8 -background transparent \
+		-size $*x$* "$(lastword $^)" "$@"
+
+# The smallest sizes are generated using a different SVG
+novnc-16.png novnc-24.png novnc-32.png: novnc-icon-sm.svg
 
 clean:
 	rm -f *.png

app/images/icons/novnc-ios-icon.svg

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+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
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+   viewBox="0 0 48 48.000001"
+   id="svg2"
+   version="1.1"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
+   sodipodi:docname="novnc-ios-icon.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:dc="http://purl.org/dc/elements/1.1/">
+  <defs
+     id="defs4" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
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+     inkscape:object-nodes="true"
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+     inkscape:snap-midpoints="true"
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+     inkscape:window-height="1371"
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+     inkscape:showpageshadow="2"
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+       type="xygrid"
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+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
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+       inkscape:label="shadows">
+      <g
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+         style="fill:#000000;fill-opacity:1;stroke:none"
+         inkscape:label="no">
+        <path
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+           inkscape:connector-curvature="0"
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+           inkscape:connector-curvature="0"
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+           sodipodi:nodetypes="cssssccscsscscc"
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app/images/mouse_left.svg

@@ -1,92 +0,0 @@
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app/images/windows.svg

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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+<svg
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+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
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+   inkscape:export-xdpi="90"
+   sodipodi:docname="windows.svg"
+   inkscape:export-filename="/home/ossman/devel/noVNC/images/drag.png"
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+   pagecolor="#959595"
+   bordercolor="#666666"
+   borderopacity="1"
+   objecttolerance="10"
+   gridtolerance="10"
+   guidetolerance="10"
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+<style
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app/locale/README

@@ -0,0 +1 @@
+DO NOT MODIFY THE FILES IN THIS FOLDER, THEY ARE AUTOMATICALLY GENERATED FROM THE PO-FILES.

app/locale/cs.json

@@ -0,0 +1,71 @@
+{
+    "Connecting...": "Připojení...",
+    "Disconnecting...": "Odpojení...",
+    "Reconnecting...": "Obnova připojení...",
+    "Internal error": "Vnitřní chyba",
+    "Must set host": "Hostitel musí být nastavení",
+    "Connected (encrypted) to ": "Připojení (šifrované) k ",
+    "Connected (unencrypted) to ": "Připojení (nešifrované) k ",
+    "Something went wrong, connection is closed": "Něco se pokazilo, odpojeno",
+    "Failed to connect to server": "Chyba připojení k serveru",
+    "Disconnected": "Odpojeno",
+    "New connection has been rejected with reason: ": "Nové připojení bylo odmítnuto s odůvodněním: ",
+    "New connection has been rejected": "Nové připojení bylo odmítnuto",
+    "Password is required": "Je vyžadováno heslo",
+    "noVNC encountered an error:": "noVNC narazilo na chybu:",
+    "Hide/Show the control bar": "Skrýt/zobrazit ovládací panel",
+    "Move/Drag Viewport": "Přesunout/přetáhnout výřez",
+    "viewport drag": "přesun výřezu",
+    "Active Mouse Button": "Aktivní tlačítka myši",
+    "No mousebutton": "Žádné",
+    "Left mousebutton": "Levé tlačítko myši",
+    "Middle mousebutton": "Prostřední tlačítko myši",
+    "Right mousebutton": "Pravé tlačítko myši",
+    "Keyboard": "Klávesnice",
+    "Show Keyboard": "Zobrazit klávesnici",
+    "Extra keys": "Extra klávesy",
+    "Show Extra Keys": "Zobrazit extra klávesy",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Přepnout Ctrl",
+    "Alt": "Alt",
+    "Toggle Alt": "Přepnout Alt",
+    "Send Tab": "Odeslat tabulátor",
+    "Tab": "Tab",
+    "Esc": "Esc",
+    "Send Escape": "Odeslat Esc",
+    "Ctrl+Alt+Del": "Ctrl+Alt+Del",
+    "Send Ctrl-Alt-Del": "Poslat Ctrl-Alt-Del",
+    "Shutdown/Reboot": "Vypnutí/Restart",
+    "Shutdown/Reboot...": "Vypnutí/Restart...",
+    "Power": "Napájení",
+    "Shutdown": "Vypnout",
+    "Reboot": "Restart",
+    "Reset": "Reset",
+    "Clipboard": "Schránka",
+    "Clear": "Vymazat",
+    "Fullscreen": "Celá obrazovka",
+    "Settings": "Nastavení",
+    "Shared Mode": "Sdílený režim",
+    "View Only": "Pouze prohlížení",
+    "Clip to Window": "Přizpůsobit oknu",
+    "Scaling Mode:": "Přizpůsobení velikosti",
+    "None": "Žádné",
+    "Local Scaling": "Místní",
+    "Remote Resizing": "Vzdálené",
+    "Advanced": "Pokročilé",
+    "Repeater ID:": "ID opakovače",
+    "WebSocket": "WebSocket",
+    "Encrypt": "Šifrování:",
+    "Host:": "Hostitel:",
+    "Port:": "Port:",
+    "Path:": "Cesta",
+    "Automatic Reconnect": "Automatická obnova připojení",
+    "Reconnect Delay (ms):": "Zpoždění připojení (ms)",
+    "Show Dot when No Cursor": "Tečka místo chybějícího kurzoru myši",
+    "Logging:": "Logování:",
+    "Disconnect": "Odpojit",
+    "Connect": "Připojit",
+    "Password:": "Heslo",
+    "Send Password": "Odeslat heslo",
+    "Cancel": "Zrušit"
+}

app/locale/es.json

@@ -0,0 +1,68 @@
+{
+    "Connecting...": "Conectando...",
+    "Connected (encrypted) to ": "Conectado (con encriptación) a",
+    "Connected (unencrypted) to ": "Conectado (sin encriptación) a",
+    "Disconnecting...": "Desconectando...",
+    "Disconnected": "Desconectado",
+    "Must set host": "Se debe configurar el host",
+    "Reconnecting...": "Reconectando...",
+    "Password is required": "La contraseña es obligatoria",
+    "Disconnect timeout": "Tiempo de desconexión agotado",
+    "noVNC encountered an error:": "noVNC ha encontrado un error:",
+    "Hide/Show the control bar": "Ocultar/Mostrar la barra de control",
+    "Move/Drag Viewport": "Mover/Arrastrar la ventana",
+    "viewport drag": "Arrastrar la ventana",
+    "Active Mouse Button": "Botón activo del ratón",
+    "No mousebutton": "Ningún botón del ratón",
+    "Left mousebutton": "Botón izquierdo del ratón",
+    "Middle mousebutton": "Botón central del ratón",
+    "Right mousebutton": "Botón derecho del ratón",
+    "Keyboard": "Teclado",
+    "Show Keyboard": "Mostrar teclado",
+    "Extra keys": "Teclas adicionales",
+    "Show Extra Keys": "Mostrar Teclas Adicionales",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Pulsar/Soltar Ctrl",
+    "Alt": "Alt",
+    "Toggle Alt": "Pulsar/Soltar Alt",
+    "Send Tab": "Enviar Tabulación",
+    "Tab": "Tabulación",
+    "Esc": "Esc",
+    "Send Escape": "Enviar Escape",
+    "Ctrl+Alt+Del": "Ctrl+Alt+Del",
+    "Send Ctrl-Alt-Del": "Enviar Ctrl+Alt+Del",
+    "Shutdown/Reboot": "Apagar/Reiniciar",
+    "Shutdown/Reboot...": "Apagar/Reiniciar...",
+    "Power": "Encender",
+    "Shutdown": "Apagar",
+    "Reboot": "Reiniciar",
+    "Reset": "Restablecer",
+    "Clipboard": "Portapapeles",
+    "Clear": "Vaciar",
+    "Fullscreen": "Pantalla Completa",
+    "Settings": "Configuraciones",
+    "Encrypt": "Encriptar",
+    "Shared Mode": "Modo Compartido",
+    "View Only": "Solo visualización",
+    "Clip to Window": "Recortar al tamaño de la ventana",
+    "Scaling Mode:": "Modo de escalado:",
+    "None": "Ninguno",
+    "Local Scaling": "Escalado Local",
+    "Local Downscaling": "Reducción de escala local",
+    "Remote Resizing": "Cambio de tamaño remoto",
+    "Advanced": "Avanzado",
+    "Local Cursor": "Cursor Local",
+    "Repeater ID:": "ID del Repetidor:",
+    "WebSocket": "WebSocket",
+    "Host:": "Host:",
+    "Port:": "Puerto:",
+    "Path:": "Ruta:",
+    "Automatic Reconnect": "Reconexión automática",
+    "Reconnect Delay (ms):": "Retraso en la reconexión (ms):",
+    "Logging:": "Registrando:",
+    "Disconnect": "Desconectar",
+    "Connect": "Conectar",
+    "Password:": "Contraseña:",
+    "Cancel": "Cancelar",
+    "Canvas not supported.": "Canvas no soportado."
+}

app/locale/fr.json

@@ -0,0 +1,78 @@
+{
+    "HTTPS is required for full functionality": "",
+    "Connecting...": "En cours de connexion...",
+    "Disconnecting...": "Déconnexion en cours...",
+    "Reconnecting...": "Reconnexion en cours...",
+    "Internal error": "Erreur interne",
+    "Must set host": "Doit définir l'hôte",
+    "Connected (encrypted) to ": "Connecté (chiffré) à ",
+    "Connected (unencrypted) to ": "Connecté (non chiffré) à ",
+    "Something went wrong, connection is closed": "Quelque chose s'est mal passé, la connexion a été fermée",
+    "Failed to connect to server": "Échec de connexion au serveur",
+    "Disconnected": "Déconnecté",
+    "New connection has been rejected with reason: ": "Une nouvelle connexion a été rejetée avec motif : ",
+    "New connection has been rejected": "Une nouvelle connexion a été rejetée",
+    "Credentials are required": "Les identifiants sont requis",
+    "noVNC encountered an error:": "noVNC a rencontré une erreur :",
+    "Hide/Show the control bar": "Masquer/Afficher la barre de contrôle",
+    "Drag": "Faire glisser",
+    "Move/Drag Viewport": "Déplacer/faire glisser le Viewport",
+    "Keyboard": "Clavier",
+    "Show Keyboard": "Afficher le clavier",
+    "Extra keys": "Touches supplémentaires",
+    "Show Extra Keys": "Afficher les touches supplémentaires",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Basculer Ctrl",
+    "Alt": "Alt",
+    "Toggle Alt": "Basculer Alt",
+    "Toggle Windows": "Basculer Windows",
+    "Windows": "Windows",
+    "Send Tab": "Envoyer l'onglet",
+    "Tab": "l'onglet",
+    "Esc": "Esc",
+    "Send Escape": "Envoyer Escape",
+    "Ctrl+Alt+Del": "Ctrl+Alt+Del",
+    "Send Ctrl-Alt-Del": "Envoyer Ctrl-Alt-Del",
+    "Shutdown/Reboot": "Arrêter/Redémarrer",
+    "Shutdown/Reboot...": "Arrêter/Redémarrer...",
+    "Power": "Alimentation",
+    "Shutdown": "Arrêter",
+    "Reboot": "Redémarrer",
+    "Reset": "Réinitialiser",
+    "Clipboard": "Presse-papiers",
+    "Edit clipboard content in the textarea below.": "",
+    "Settings": "Paramètres",
+    "Shared Mode": "Mode partagé",
+    "View Only": "Afficher uniquement",
+    "Clip to Window": "Clip à fenêtre",
+    "Scaling Mode:": "Mode mise à l'échelle :",
+    "None": "Aucun",
+    "Local Scaling": "Mise à l'échelle locale",
+    "Remote Resizing": "Redimensionnement à distance",
+    "Advanced": "Avancé",
+    "Quality:": "Qualité :",
+    "Compression level:": "Niveau de compression :",
+    "Repeater ID:": "ID Répéteur :",
+    "WebSocket": "WebSocket",
+    "Encrypt": "Chiffrer",
+    "Host:": "Hôte :",
+    "Port:": "Port :",
+    "Path:": "Chemin :",
+    "Automatic Reconnect": "Reconnecter automatiquemen",
+    "Reconnect Delay (ms):": "Délai de reconnexion (ms) :",
+    "Show Dot when No Cursor": "Afficher le point lorsqu'il n'y a pas de curseur",
+    "Logging:": "Se connecter :",
+    "Version:": "Version :",
+    "Disconnect": "Déconnecter",
+    "Connect": "Connecter",
+    "Server identity": "",
+    "The server has provided the following identifying information:": "",
+    "Fingerprint:": "",
+    "Please verify that the information is correct and press \"Approve\". Otherwise press \"Reject\".": "",
+    "Approve": "",
+    "Reject": "",
+    "Username:": "Nom d'utilisateur :",
+    "Password:": "Mot de passe :",
+    "Send Credentials": "Envoyer les identifiants",
+    "Cancel": "Annuler"
+}

app/locale/it.json

@@ -0,0 +1,72 @@
+{
+    "Connecting...": "Connessione in corso...",
+    "Disconnecting...": "Disconnessione...",
+    "Reconnecting...": "Riconnessione...",
+    "Internal error": "Errore interno",
+    "Must set host": "Devi impostare l'host",
+    "Connected (encrypted) to ": "Connesso (crittografato) a ",
+    "Connected (unencrypted) to ": "Connesso (non crittografato) a",
+    "Something went wrong, connection is closed": "Qualcosa è andato storto, la connessione è stata chiusa",
+    "Failed to connect to server": "Impossibile connettersi al server",
+    "Disconnected": "Disconnesso",
+    "New connection has been rejected with reason: ": "La nuova connessione è stata rifiutata con motivo: ",
+    "New connection has been rejected": "La nuova connessione è stata rifiutata",
+    "Credentials are required": "Le credenziali sono obbligatorie",
+    "noVNC encountered an error:": "noVNC ha riscontrato un errore:",
+    "Hide/Show the control bar": "Nascondi/Mostra la barra di controllo",
+    "Drag": "",
+    "Move/Drag Viewport": "",
+    "Keyboard": "Tastiera",
+    "Show Keyboard": "Mostra tastiera",
+    "Extra keys": "Tasti Aggiuntivi",
+    "Show Extra Keys": "Mostra Tasti Aggiuntivi",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Tieni premuto Ctrl",
+    "Alt": "Alt",
+    "Toggle Alt": "Tieni premuto Alt",
+    "Toggle Windows": "Tieni premuto Windows",
+    "Windows": "Windows",
+    "Send Tab": "Invia Tab",
+    "Tab": "Tab",
+    "Esc": "Esc",
+    "Send Escape": "Invia Esc",
+    "Ctrl+Alt+Del": "Ctrl+Alt+Canc",
+    "Send Ctrl-Alt-Del": "Invia Ctrl-Alt-Canc",
+    "Shutdown/Reboot": "Spegnimento/Riavvio",
+    "Shutdown/Reboot...": "Spegnimento/Riavvio...",
+    "Power": "Alimentazione",
+    "Shutdown": "Spegnimento",
+    "Reboot": "Riavvio",
+    "Reset": "Reset",
+    "Clipboard": "Clipboard",
+    "Clear": "Pulisci",
+    "Fullscreen": "Schermo intero",
+    "Settings": "Impostazioni",
+    "Shared Mode": "Modalità condivisa",
+    "View Only": "Sola Visualizzazione",
+    "Clip to Window": "",
+    "Scaling Mode:": "Modalità di ridimensionamento:",
+    "None": "Nessuna",
+    "Local Scaling": "Ridimensionamento Locale",
+    "Remote Resizing": "Ridimensionamento Remoto",
+    "Advanced": "Avanzate",
+    "Quality:": "Qualità:",
+    "Compression level:": "Livello Compressione:",
+    "Repeater ID:": "ID Ripetitore:",
+    "WebSocket": "WebSocket",
+    "Encrypt": "Crittografa",
+    "Host:": "Host:",
+    "Port:": "Porta:",
+    "Path:": "Percorso:",
+    "Automatic Reconnect": "Riconnessione Automatica",
+    "Reconnect Delay (ms):": "Ritardo Riconnessione (ms):",
+    "Show Dot when No Cursor": "Mostra Punto quando Nessun Cursore",
+    "Logging:": "",
+    "Version:": "Versione:",
+    "Disconnect": "Disconnetti",
+    "Connect": "Connetti",
+    "Username:": "Utente:",
+    "Password:": "Password:",
+    "Send Credentials": "Invia Credenziale",
+    "Cancel": "Annulla"
+}

app/locale/ja.json

@@ -0,0 +1,72 @@
+{
+    "Connecting...": "接続しています...",
+    "Disconnecting...": "切断しています...",
+    "Reconnecting...": "再接続しています...",
+    "Internal error": "内部エラー",
+    "Must set host": "ホストを設定する必要があります",
+    "Connected (encrypted) to ": "接続しました (暗号化済み): ",
+    "Connected (unencrypted) to ": "接続しました (暗号化されていません): ",
+    "Something went wrong, connection is closed": "何らかの問題で、接続が閉じられました",
+    "Failed to connect to server": "サーバーへの接続に失敗しました",
+    "Disconnected": "切断しました",
+    "New connection has been rejected with reason: ": "新規接続は次の理由で拒否されました: ",
+    "New connection has been rejected": "新規接続は拒否されました",
+    "Credentials are required": "資格情報が必要です",
+    "noVNC encountered an error:": "noVNC でエラーが発生しました:",
+    "Hide/Show the control bar": "コントロールバーを隠す/表示する",
+    "Drag": "ドラッグ",
+    "Move/Drag Viewport": "ビューポートを移動/ドラッグ",
+    "Keyboard": "キーボード",
+    "Show Keyboard": "キーボードを表示",
+    "Extra keys": "追加キー",
+    "Show Extra Keys": "追加キーを表示",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Ctrl キーを切り替え",
+    "Alt": "Alt",
+    "Toggle Alt": "Alt キーを切り替え",
+    "Toggle Windows": "Windows キーを切り替え",
+    "Windows": "Windows",
+    "Send Tab": "Tab キーを送信",
+    "Tab": "Tab",
+    "Esc": "Esc",
+    "Send Escape": "Escape キーを送信",
+    "Ctrl+Alt+Del": "Ctrl+Alt+Del",
+    "Send Ctrl-Alt-Del": "Ctrl-Alt-Del を送信",
+    "Shutdown/Reboot": "シャットダウン/再起動",
+    "Shutdown/Reboot...": "シャットダウン/再起動...",
+    "Power": "電源",
+    "Shutdown": "シャットダウン",
+    "Reboot": "再起動",
+    "Reset": "リセット",
+    "Clipboard": "クリップボード",
+    "Clear": "クリア",
+    "Fullscreen": "全画面表示",
+    "Settings": "設定",
+    "Shared Mode": "共有モード",
+    "View Only": "表示のみ",
+    "Clip to Window": "ウィンドウにクリップ",
+    "Scaling Mode:": "スケーリングモード:",
+    "None": "なし",
+    "Local Scaling": "ローカルスケーリング",
+    "Remote Resizing": "リモートでリサイズ",
+    "Advanced": "高度",
+    "Quality:": "品質:",
+    "Compression level:": "圧縮レベル:",
+    "Repeater ID:": "リピーター ID:",
+    "WebSocket": "WebSocket",
+    "Encrypt": "暗号化",
+    "Host:": "ホスト:",
+    "Port:": "ポート:",
+    "Path:": "パス:",
+    "Automatic Reconnect": "自動再接続",
+    "Reconnect Delay (ms):": "再接続する遅延 (ミリ秒):",
+    "Show Dot when No Cursor": "カーソルがないときにドットを表示",
+    "Logging:": "ロギング:",
+    "Version:": "バージョン:",
+    "Disconnect": "切断",
+    "Connect": "接続",
+    "Username:": "ユーザー名:",
+    "Password:": "パスワード:",
+    "Send Credentials": "資格情報を送信",
+    "Cancel": "キャンセル"
+}

app/locale/ko.json

@@ -0,0 +1,70 @@
+{
+    "Connecting...": "연결중...",
+    "Disconnecting...": "연결 해제중...",
+    "Reconnecting...": "재연결중...",
+    "Internal error": "내부 오류",
+    "Must set host": "호스트는 설정되어야 합니다.",
+    "Connected (encrypted) to ": "다음과 (암호화되어) 연결되었습니다:",
+    "Connected (unencrypted) to ": "다음과 (암호화 없이) 연결되었습니다:",
+    "Something went wrong, connection is closed": "무언가 잘못되었습니다, 연결이 닫혔습니다.",
+    "Failed to connect to server": "서버에 연결하지 못했습니다.",
+    "Disconnected": "연결이 해제되었습니다.",
+    "New connection has been rejected with reason: ": "새 연결이 다음 이유로 거부되었습니다:",
+    "New connection has been rejected": "새 연결이 거부되었습니다.",
+    "Password is required": "비밀번호가 필요합니다.",
+    "noVNC encountered an error:": "noVNC에 오류가 발생했습니다:",
+    "Hide/Show the control bar": "컨트롤 바 숨기기/보이기",
+    "Move/Drag Viewport": "움직이기/드래그 뷰포트",
+    "viewport drag": "뷰포트 드래그",
+    "Active Mouse Button": "마우스 버튼 활성화",
+    "No mousebutton": "마우스 버튼 없음",
+    "Left mousebutton": "왼쪽 마우스 버튼",
+    "Middle mousebutton": "중간 마우스 버튼",
+    "Right mousebutton": "오른쪽 마우스 버튼",
+    "Keyboard": "키보드",
+    "Show Keyboard": "키보드 보이기",
+    "Extra keys": "기타 키들",
+    "Show Extra Keys": "기타 키들 보이기",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Ctrl 켜기/끄기",
+    "Alt": "Alt",
+    "Toggle Alt": "Alt 켜기/끄기",
+    "Send Tab": "Tab 보내기",
+    "Tab": "Tab",
+    "Esc": "Esc",
+    "Send Escape": "Esc 보내기",
+    "Ctrl+Alt+Del": "Ctrl+Alt+Del",
+    "Send Ctrl-Alt-Del": "Ctrl+Alt+Del 보내기",
+    "Shutdown/Reboot": "셧다운/리붓",
+    "Shutdown/Reboot...": "셧다운/리붓...",
+    "Power": "전원",
+    "Shutdown": "셧다운",
+    "Reboot": "리붓",
+    "Reset": "리셋",
+    "Clipboard": "클립보드",
+    "Clear": "지우기",
+    "Fullscreen": "전체화면",
+    "Settings": "설정",
+    "Shared Mode": "공유 모드",
+    "View Only": "보기 전용",
+    "Clip to Window": "창에 클립",
+    "Scaling Mode:": "스케일링 모드:",
+    "None": "없음",
+    "Local Scaling": "로컬 스케일링",
+    "Remote Resizing": "원격 크기 조절",
+    "Advanced": "고급",
+    "Repeater ID:": "중계 ID",
+    "WebSocket": "웹소켓",
+    "Encrypt": "암호화",
+    "Host:": "호스트:",
+    "Port:": "포트:",
+    "Path:": "위치:",
+    "Automatic Reconnect": "자동 재연결",
+    "Reconnect Delay (ms):": "재연결 지연 시간 (ms)",
+    "Logging:": "로깅",
+    "Disconnect": "연결 해제",
+    "Connect": "연결",
+    "Password:": "비밀번호:",
+    "Send Password": "비밀번호 전송",
+    "Cancel": "취소"
+}

app/locale/nl.json

@@ -1,13 +1,17 @@
 {
     "Connecting...": "Verbinden...",
+    "Disconnecting...": "Verbinding verbreken...",
+    "Reconnecting...": "Opnieuw verbinding maken...",
+    "Internal error": "Interne fout",
+    "Must set host": "Host moeten worden ingesteld",
     "Connected (encrypted) to ": "Verbonden (versleuteld) met ",
     "Connected (unencrypted) to ": "Verbonden (onversleuteld) met ",
-    "Disconnecting...": "Verbinding verbreken...",
+    "Something went wrong, connection is closed": "Er iets fout gelopen, verbinding werd verbroken",
+    "Failed to connect to server": "Verbinding maken met server is mislukt",
     "Disconnected": "Verbinding verbroken",
-    "Must set host": "Host moeten worden ingesteld",
-    "Reconnecting...": "Opnieuw verbinding maken...",
+    "New connection has been rejected with reason: ": "Nieuwe verbinding is geweigerd omwille van de volgende reden: ",
+    "New connection has been rejected": "Nieuwe verbinding is geweigerd",
     "Password is required": "Wachtwoord is vereist",
-    "Disconnect timeout": "Timeout tijdens verbreken van verbinding",
     "noVNC encountered an error:": "noVNC heeft een fout bemerkt:",
     "Hide/Show the control bar": "Verberg/Toon de bedieningsbalk",
     "Move/Drag Viewport": "Verplaats/Versleep Kijkvenster",
@@ -22,9 +26,11 @@
     "Extra keys": "Extra toetsen",
     "Show Extra Keys": "Toon Extra Toetsen",
     "Ctrl": "Ctrl",
-    "Toggle Ctrl": "Ctrl aan/uitzetten",
+    "Toggle Ctrl": "Ctrl omschakelen",
     "Alt": "Alt",
-    "Toggle Alt": "Alt aan/uitzetten",
+    "Toggle Alt": "Alt omschakelen",
+    "Toggle Windows": "Windows omschakelen",
+    "Windows": "Windows",
     "Send Tab": "Tab Sturen",
     "Tab": "Tab",
     "Esc": "Esc",
@@ -47,10 +53,8 @@
     "Scaling Mode:": "Schaalmodus:",
     "None": "Geen",
     "Local Scaling": "Lokaal Schalen",
-    "Local Downscaling": "Lokaal Neerschalen",
     "Remote Resizing": "Op Afstand Formaat Wijzigen",
     "Advanced": "Geavanceerd",
-    "Local Cursor": "Lokale Cursor",
     "Repeater ID:": "Repeater ID:",
     "WebSocket": "WebSocket",
     "Encrypt": "Versleutelen",
@@ -59,10 +63,11 @@
     "Path:": "Pad:",
     "Automatic Reconnect": "Automatisch Opnieuw Verbinden",
     "Reconnect Delay (ms):": "Vertraging voor Opnieuw Verbinden (ms):",
+    "Show Dot when No Cursor": "Geef stip weer indien geen cursor",
     "Logging:": "Logmeldingen:",
     "Disconnect": "Verbinding verbreken",
     "Connect": "Verbinden",
     "Password:": "Wachtwoord:",
-    "Cancel": "Annuleren",
-    "Canvas not supported.": "Canvas wordt niet ondersteund."
+    "Send Password": "Verzend Wachtwoord:",
+    "Cancel": "Annuleren"
 }

app/locale/pt_BR.json

@@ -0,0 +1,72 @@
+{
+    "Connecting...": "Conectando...",
+    "Disconnecting...": "Desconectando...",
+    "Reconnecting...": "Reconectando...",
+    "Internal error": "Erro interno",
+    "Must set host": "É necessário definir o host",
+    "Connected (encrypted) to ": "Conectado (com criptografia) a ",
+    "Connected (unencrypted) to ": "Conectado (sem criptografia) a ",
+    "Something went wrong, connection is closed": "Algo deu errado. A conexão foi encerrada.",
+    "Failed to connect to server": "Falha ao conectar-se ao servidor",
+    "Disconnected": "Desconectado",
+    "New connection has been rejected with reason: ": "A nova conexão foi rejeitada pelo motivo: ",
+    "New connection has been rejected": "A nova conexão foi rejeitada",
+    "Credentials are required": "Credenciais são obrigatórias",
+    "noVNC encountered an error:": "O noVNC encontrou um erro:",
+    "Hide/Show the control bar": "Esconder/mostrar a barra de controles",
+    "Drag": "Arrastar",
+    "Move/Drag Viewport": "Mover/arrastar a janela",
+    "Keyboard": "Teclado",
+    "Show Keyboard": "Mostrar teclado",
+    "Extra keys": "Teclas adicionais",
+    "Show Extra Keys": "Mostar teclas adicionais",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Pressionar/soltar Ctrl",
+    "Alt": "Alt",
+    "Toggle Alt": "Pressionar/soltar Alt",
+    "Toggle Windows": "Pressionar/soltar Windows",
+    "Windows": "Windows",
+    "Send Tab": "Enviar Tab",
+    "Tab": "Tab",
+    "Esc": "Esc",
+    "Send Escape": "Enviar Esc",
+    "Ctrl+Alt+Del": "Ctrl+Alt+Del",
+    "Send Ctrl-Alt-Del": "Enviar Ctrl-Alt-Del",
+    "Shutdown/Reboot": "Desligar/reiniciar",
+    "Shutdown/Reboot...": "Desligar/reiniciar...",
+    "Power": "Ligar",
+    "Shutdown": "Desligar",
+    "Reboot": "Reiniciar",
+    "Reset": "Reiniciar (forçado)",
+    "Clipboard": "Área de transferência",
+    "Clear": "Limpar",
+    "Fullscreen": "Tela cheia",
+    "Settings": "Configurações",
+    "Shared Mode": "Modo compartilhado",
+    "View Only": "Apenas visualizar",
+    "Clip to Window": "Recortar à janela",
+    "Scaling Mode:": "Modo de dimensionamento:",
+    "None": "Nenhum",
+    "Local Scaling": "Local",
+    "Remote Resizing": "Remoto",
+    "Advanced": "Avançado",
+    "Quality:": "Qualidade:",
+    "Compression level:": "Nível de compressão:",
+    "Repeater ID:": "ID do repetidor:",
+    "WebSocket": "WebSocket",
+    "Encrypt": "Criptografar",
+    "Host:": "Host:",
+    "Port:": "Porta:",
+    "Path:": "Caminho:",
+    "Automatic Reconnect": "Reconexão automática",
+    "Reconnect Delay (ms):": "Atraso da reconexão (ms)",
+    "Show Dot when No Cursor": "Mostrar ponto quando não há cursor",
+    "Logging:": "Registros:",
+    "Version:": "Versão:",
+    "Disconnect": "Desconectar",
+    "Connect": "Conectar",
+    "Username:": "Nome de usuário:",
+    "Password:": "Senha:",
+    "Send Credentials": "Enviar credenciais",
+    "Cancel": "Cancelar"
+}

app/locale/ru.json

@@ -0,0 +1,72 @@
+{
+    "Connecting...": "Подключение...",
+    "Disconnecting...": "Отключение...",
+    "Reconnecting...": "Переподключение...",
+    "Internal error": "Внутренняя ошибка",
+    "Must set host": "Задайте имя сервера или IP",
+    "Connected (encrypted) to ": "Подключено (с шифрованием) к ",
+    "Connected (unencrypted) to ": "Подключено (без шифрования) к ",
+    "Something went wrong, connection is closed": "Что-то пошло не так, подключение разорвано",
+    "Failed to connect to server": "Ошибка подключения к серверу",
+    "Disconnected": "Отключено",
+    "New connection has been rejected with reason: ": "Новое соединение отклонено по причине: ",
+    "New connection has been rejected": "Новое соединение отклонено",
+    "Credentials are required": "Требуются учетные данные",
+    "noVNC encountered an error:": "Ошибка noVNC: ",
+    "Hide/Show the control bar": "Скрыть/Показать контрольную панель",
+    "Drag": "Переместить",
+    "Move/Drag Viewport": "Переместить окно",
+    "Keyboard": "Клавиатура",
+    "Show Keyboard": "Показать клавиатуру",
+    "Extra keys": "Дополнительные Кнопки",
+    "Show Extra Keys": "Показать Дополнительные Кнопки",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Переключение нажатия Ctrl",
+    "Alt": "Alt",
+    "Toggle Alt": "Переключение нажатия Alt",
+    "Toggle Windows": "Переключение вкладок",
+    "Windows": "Вкладка",
+    "Send Tab": "Передать нажатие Tab",
+    "Tab": "Tab",
+    "Esc": "Esc",
+    "Send Escape": "Передать нажатие Escape",
+    "Ctrl+Alt+Del": "Ctrl+Alt+Del",
+    "Send Ctrl-Alt-Del": "Передать нажатие Ctrl-Alt-Del",
+    "Shutdown/Reboot": "Выключить/Перезагрузить",
+    "Shutdown/Reboot...": "Выключить/Перезагрузить...",
+    "Power": "Питание",
+    "Shutdown": "Выключить",
+    "Reboot": "Перезагрузить",
+    "Reset": "Сброс",
+    "Clipboard": "Буфер обмена",
+    "Clear": "Очистить",
+    "Fullscreen": "Во весь экран",
+    "Settings": "Настройки",
+    "Shared Mode": "Общий режим",
+    "View Only": "Только Просмотр",
+    "Clip to Window": "В окно",
+    "Scaling Mode:": "Масштаб:",
+    "None": "Нет",
+    "Local Scaling": "Локльный масштаб",
+    "Remote Resizing": "Удаленная перенастройка размера",
+    "Advanced": "Дополнительно",
+    "Quality:": "Качество",
+    "Compression level:": "Уровень Сжатия",
+    "Repeater ID:": "Идентификатор ID:",
+    "WebSocket": "WebSocket",
+    "Encrypt": "Шифрование",
+    "Host:": "Сервер:",
+    "Port:": "Порт:",
+    "Path:": "Путь:",
+    "Automatic Reconnect": "Автоматическое переподключение",
+    "Reconnect Delay (ms):": "Задержка переподключения (мс):",
+    "Show Dot when No Cursor": "Показать точку вместо курсора",
+    "Logging:": "Лог:",
+    "Version:": "Версия",
+    "Disconnect": "Отключение",
+    "Connect": "Подключение",
+    "Username:": "Имя Пользователя",
+    "Password:": "Пароль:",
+    "Send Credentials": "Передача Учетных Данных",
+    "Cancel": "Выход"
+}

app/locale/sv.json

@@ -1,22 +1,22 @@
 {
+    "HTTPS is required for full functionality": "HTTPS krävs för full funktionalitet",
     "Connecting...": "Ansluter...",
+    "Disconnecting...": "Kopplar ner...",
+    "Reconnecting...": "Återansluter...",
+    "Internal error": "Internt fel",
+    "Must set host": "Du måste specifiera en värd",
     "Connected (encrypted) to ": "Ansluten (krypterat) till ",
     "Connected (unencrypted) to ": "Ansluten (okrypterat) till ",
-    "Disconnecting...": "Kopplar ner...",
+    "Something went wrong, connection is closed": "Något gick fel, anslutningen avslutades",
+    "Failed to connect to server": "Misslyckades att ansluta till servern",
     "Disconnected": "Frånkopplad",
-    "Must set host": "Du måste specifiera en värd",
-    "Reconnecting...": "Återansluter...",
-    "Password is required": "Lösenord krävs",
-    "Disconnect timeout": "Det tog för lång tid att koppla ner",
+    "New connection has been rejected with reason: ": "Ny anslutning har blivit nekad med följande skäl: ",
+    "New connection has been rejected": "Ny anslutning har blivit nekad",
+    "Credentials are required": "Användaruppgifter krävs",
     "noVNC encountered an error:": "noVNC stötte på ett problem:",
     "Hide/Show the control bar": "Göm/Visa kontrollbaren",
+    "Drag": "Dra",
     "Move/Drag Viewport": "Flytta/Dra Vyn",
-    "viewport drag": "dra vy",
-    "Active Mouse Button": "Aktiv musknapp",
-    "No mousebutton": "Ingen musknapp",
-    "Left mousebutton": "Vänster musknapp",
-    "Middle mousebutton": "Mitten-musknapp",
-    "Right mousebutton": "Höger musknapp",
     "Keyboard": "Tangentbord",
     "Show Keyboard": "Visa Tangentbord",
     "Extra keys": "Extraknappar",
@@ -25,6 +25,8 @@
     "Toggle Ctrl": "Växla Ctrl",
     "Alt": "Alt",
     "Toggle Alt": "Växla Alt",
+    "Toggle Windows": "Växla Windows",
+    "Windows": "Windows",
     "Send Tab": "Skicka Tab",
     "Tab": "Tab",
     "Esc": "Esc",
@@ -38,8 +40,8 @@
     "Reboot": "Boota om",
     "Reset": "Återställ",
     "Clipboard": "Urklipp",
-    "Clear": "Rensa",
-    "Fullscreen": "Fullskärm",
+    "Edit clipboard content in the textarea below.": "Redigera urklippets innehåll i fältet nedan.",
+    "Full Screen": "Fullskärm",
     "Settings": "Inställningar",
     "Shared Mode": "Delat Läge",
     "View Only": "Endast Visning",
@@ -47,10 +49,10 @@
     "Scaling Mode:": "Skalningsläge:",
     "None": "Ingen",
     "Local Scaling": "Lokal Skalning",
-    "Local Downscaling": "Lokal Nedskalning",
     "Remote Resizing": "Ändra Storlek",
     "Advanced": "Avancerat",
-    "Local Cursor": "Lokal Muspekare",
+    "Quality:": "Kvalitet:",
+    "Compression level:": "Kompressionsnivå:",
     "Repeater ID:": "Repeater-ID:",
     "WebSocket": "WebSocket",
     "Encrypt": "Kryptera",
@@ -59,10 +61,20 @@
     "Path:": "Sökväg:",
     "Automatic Reconnect": "Automatisk Återanslutning",
     "Reconnect Delay (ms):": "Fördröjning (ms):",
+    "Show Dot when No Cursor": "Visa prick när ingen muspekare finns",
     "Logging:": "Loggning:",
+    "Version:": "Version:",
     "Disconnect": "Koppla från",
     "Connect": "Anslut",
+    "Server identity": "Server-identitet",
+    "The server has provided the following identifying information:": "Servern har gett följande identifierande information:",
+    "Fingerprint:": "Fingeravtryck:",
+    "Please verify that the information is correct and press \"Approve\". Otherwise press \"Reject\".": "Kontrollera att informationen är korrekt och tryck sedan \"Godkänn\". Tryck annars \"Neka\".",
+    "Approve": "Godkänn",
+    "Reject": "Neka",
+    "Credentials": "Användaruppgifter",
+    "Username:": "Användarnamn:",
     "Password:": "Lösenord:",
-    "Cancel": "Avbryt",
-    "Canvas not supported.": "Canvas stöds ej"
+    "Send Credentials": "Skicka Användaruppgifter",
+    "Cancel": "Avbryt"
 }

app/locale/tr.json

@@ -0,0 +1,69 @@
+{
+    "Connecting...": "Bağlanıyor...",
+    "Disconnecting...": "Bağlantı kesiliyor...",
+    "Reconnecting...": "Yeniden bağlantı kuruluyor...",
+    "Internal error": "İç hata",
+    "Must set host": "Sunucuyu kur",
+    "Connected (encrypted) to ": "Bağlı (şifrelenmiş)",
+    "Connected (unencrypted) to ": "Bağlandı (şifrelenmemiş)",
+    "Something went wrong, connection is closed": "Bir şeyler ters gitti, bağlantı kesildi",
+    "Disconnected": "Bağlantı kesildi",
+    "New connection has been rejected with reason: ": "Bağlantı aşağıdaki nedenlerden dolayı reddedildi: ",
+    "New connection has been rejected": "Bağlantı reddedildi",
+    "Password is required": "Şifre gerekli",
+    "noVNC encountered an error:": "Bir hata oluştu:",
+    "Hide/Show the control bar": "Denetim masasını Gizle/Göster",
+    "Move/Drag Viewport": "Görünümü Taşı/Sürükle",
+    "viewport drag": "Görüntü penceresini sürükle",
+    "Active Mouse Button": "Aktif Fare Düğmesi",
+    "No mousebutton": "Fare düğmesi yok",
+    "Left mousebutton": "Farenin sol düğmesi",
+    "Middle mousebutton": "Farenin orta düğmesi",
+    "Right mousebutton": "Farenin sağ düğmesi",
+    "Keyboard": "Klavye",
+    "Show Keyboard": "Klavye Düzenini Göster",
+    "Extra keys": "Ekstra tuşlar",
+    "Show Extra Keys": "Ekstra tuşları göster",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "Ctrl Değiştir ",
+    "Alt": "Alt",
+    "Toggle Alt": "Alt Değiştir",
+    "Send Tab": "Sekme Gönder",
+    "Tab": "Sekme",
+    "Esc": "Esc",
+    "Send Escape": "Boşluk Gönder",
+    "Ctrl+Alt+Del": "Ctrl + Alt + Del",
+    "Send Ctrl-Alt-Del": "Ctrl-Alt-Del Gönder",
+    "Shutdown/Reboot": "Kapat/Yeniden Başlat",
+    "Shutdown/Reboot...": "Kapat/Yeniden Başlat...",
+    "Power": "Güç",
+    "Shutdown": "Kapat",
+    "Reboot": "Yeniden Başlat",
+    "Reset": "Sıfırla",
+    "Clipboard": "Pano",
+    "Clear": "Temizle",
+    "Fullscreen": "Tam Ekran",
+    "Settings": "Ayarlar",
+    "Shared Mode": "Paylaşım Modu",
+    "View Only": "Sadece Görüntüle",
+    "Clip to Window": "Pencereye Tıkla",
+    "Scaling Mode:": "Ölçekleme Modu:",
+    "None": "Bilinmeyen",
+    "Local Scaling": "Yerel Ölçeklendirme",
+    "Remote Resizing": "Uzaktan Yeniden Boyutlandırma",
+    "Advanced": "Gelişmiş",
+    "Repeater ID:": "Tekralayıcı ID:",
+    "WebSocket": "WebSocket",
+    "Encrypt": "Şifrele",
+    "Host:": "Ana makine:",
+    "Port:": "Port:",
+    "Path:": "Yol:",
+    "Automatic Reconnect": "Otomatik Yeniden Bağlan",
+    "Reconnect Delay (ms):": "Yeniden Bağlanma Süreci (ms):",
+    "Logging:": "Giriş yapılıyor:",
+    "Disconnect": "Bağlantıyı Kes",
+    "Connect": "Bağlan",
+    "Password:": "Parola:",
+    "Cancel": "Vazgeç",
+    "Canvas not supported.": "Tuval desteklenmiyor."
+}

app/locale/zh_CN.json

@@ -0,0 +1,69 @@
+{
+    "Connecting...": "连接中...",
+    "Disconnecting...": "正在断开连接...",
+    "Reconnecting...": "重新连接中...",
+    "Internal error": "内部错误",
+    "Must set host": "请提供主机名",
+    "Connected (encrypted) to ": "已连接到（加密）",
+    "Connected (unencrypted) to ": "已连接到（未加密）",
+    "Something went wrong, connection is closed": "发生错误，连接已关闭",
+    "Failed to connect to server": "无法连接到服务器",
+    "Disconnected": "已断开连接",
+    "New connection has been rejected with reason: ": "连接被拒绝，原因：",
+    "New connection has been rejected": "连接被拒绝",
+    "Password is required": "请提供密码",
+    "noVNC encountered an error:": "noVNC 遇到一个错误：",
+    "Hide/Show the control bar": "显示/隐藏控制栏",
+    "Move/Drag Viewport": "拖放显示范围",
+    "viewport drag": "显示范围拖放",
+    "Active Mouse Button": "启动鼠标按鍵",
+    "No mousebutton": "禁用鼠标按鍵",
+    "Left mousebutton": "鼠标左鍵",
+    "Middle mousebutton": "鼠标中鍵",
+    "Right mousebutton": "鼠标右鍵",
+    "Keyboard": "键盘",
+    "Show Keyboard": "显示键盘",
+    "Extra keys": "额外按键",
+    "Show Extra Keys": "显示额外按键",
+    "Ctrl": "Ctrl",
+    "Toggle Ctrl": "切换 Ctrl",
+    "Alt": "Alt",
+    "Toggle Alt": "切换 Alt",
+    "Send Tab": "发送 Tab 键",
+    "Tab": "Tab",
+    "Esc": "Esc",
+    "Send Escape": "发送 Escape 键",
+    "Ctrl+Alt+Del": "Ctrl-Alt-Del",
+    "Send Ctrl-Alt-Del": "发送 Ctrl-Alt-Del 键",
+    "Shutdown/Reboot": "关机/重新启动",
+    "Shutdown/Reboot...": "关机/重新启动...",
+    "Power": "电源",
+    "Shutdown": "关机",
+    "Reboot": "重新启动",
+    "Reset": "重置",
+    "Clipboard": "剪贴板",
+    "Clear": "清除",
+    "Fullscreen": "全屏",
+    "Settings": "设置",
+    "Shared Mode": "分享模式",
+    "View Only": "仅查看",
+    "Clip to Window": "限制/裁切窗口大小",
+    "Scaling Mode:": "缩放模式：",
+    "None": "无",
+    "Local Scaling": "本地缩放",
+    "Remote Resizing": "远程调整大小",
+    "Advanced": "高级",
+    "Repeater ID:": "中继站 ID",
+    "WebSocket": "WebSocket",
+    "Encrypt": "加密",
+    "Host:": "主机：",
+    "Port:": "端口：",
+    "Path:": "路径：",
+    "Automatic Reconnect": "自动重新连接",
+    "Reconnect Delay (ms):": "重新连接间隔 (ms)：",
+    "Logging:": "日志级别：",
+    "Disconnect": "中断连接",
+    "Connect": "连接",
+    "Password:": "密码：",
+    "Cancel": "取消"
+}

app/localization.js

@@ -1,6 +1,6 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
+ * Copyright (C) 2018 The noVNC Authors
  * Licensed under MPL 2.0 (see LICENSE.txt)
  *
  * See README.md for usage and integration instructions.
@@ -10,36 +10,35 @@
  * Localization Utilities
  */
 
-export function Localizer() {
-    // Currently configured language
-    this.language = 'en';
+export class Localizer {
+    constructor() {
+        // Currently configured language
+        this.language = 'en';
 
-    // Current dictionary of translations
-    this.dictionary = undefined;
-}
+        // Current dictionary of translations
+        this.dictionary = undefined;
+    }
 
-Localizer.prototype = {
     // Configure suitable language based on user preferences
-    setup: function (supportedLanguages) {
-        var userLanguages;
-
+    setup(supportedLanguages) {
         this.language = 'en'; // Default: US English
 
         /*
          * Navigator.languages only available in Chrome (32+) and FireFox (32+)
          * Fall back to navigator.language for other browsers
          */
+        let userLanguages;
         if (typeof window.navigator.languages == 'object') {
             userLanguages = window.navigator.languages;
         } else {
             userLanguages = [navigator.language || navigator.userLanguage];
         }
 
-        for (var i = 0;i < userLanguages.length;i++) {
-            var userLang = userLanguages[i];
-            userLang = userLang.toLowerCase();
-            userLang = userLang.replace("_", "-");
-            userLang = userLang.split("-");
+        for (let i = 0;i < userLanguages.length;i++) {
+            const userLang = userLanguages[i]
+                .toLowerCase()
+                .replace("_", "-")
+                .split("-");
 
             // Built-in default?
             if ((userLang[0] === 'en') &&
@@ -48,66 +47,76 @@ Localizer.prototype = {
             }
 
             // First pass: perfect match
-            for (var j = 0;j < supportedLanguages.length;j++) {
-                var supLang = supportedLanguages[j];
-                supLang = supLang.toLowerCase();
-                supLang = supLang.replace("_", "-");
-                supLang = supLang.split("-");
+            for (let j = 0; j < supportedLanguages.length; j++) {
+                const supLang = supportedLanguages[j]
+                    .toLowerCase()
+                    .replace("_", "-")
+                    .split("-");
 
-                if (userLang[0] !== supLang[0])
+                if (userLang[0] !== supLang[0]) {
                     continue;
-                if (userLang[1] !== supLang[1])
+                }
+                if (userLang[1] !== supLang[1]) {
                     continue;
+                }
 
                 this.language = supportedLanguages[j];
                 return;
             }
 
             // Second pass: fallback
-            for (var j = 0;j < supportedLanguages.length;j++) {
-                supLang = supportedLanguages[j];
-                supLang = supLang.toLowerCase();
-                supLang = supLang.replace("_", "-");
-                supLang = supLang.split("-");
+            for (let j = 0;j < supportedLanguages.length;j++) {
+                const supLang = supportedLanguages[j]
+                    .toLowerCase()
+                    .replace("_", "-")
+                    .split("-");
 
-                if (userLang[0] !== supLang[0])
+                if (userLang[0] !== supLang[0]) {
                     continue;
-                if (supLang[1] !== undefined)
+                }
+                if (supLang[1] !== undefined) {
                     continue;
+                }
 
                 this.language = supportedLanguages[j];
                 return;
             }
         }
-    },
+    }
 
     // Retrieve localised text
-    get: function (id) {
+    get(id) {
         if (typeof this.dictionary !== 'undefined' && this.dictionary[id]) {
             return this.dictionary[id];
         } else {
             return id;
         }
-    },
+    }
 
     // Traverses the DOM and translates relevant fields
     // See https://html.spec.whatwg.org/multipage/dom.html#attr-translate
-    translateDOM: function () {
-        var self = this;
+    translateDOM() {
+        const self = this;
+
         function process(elem, enabled) {
             function isAnyOf(searchElement, items) {
                 return items.indexOf(searchElement) !== -1;
             }
 
+            function translateString(str) {
+                // We assume surrounding whitespace, and whitespace around line
+                // breaks is just for source formatting
+                str = str.split("\n").map(s => s.trim()).join(" ").trim();
+                return self.get(str);
+            }
+
             function translateAttribute(elem, attr) {
-                var str = elem.getAttribute(attr);
-                str = self.get(str);
+                const str = translateString(elem.getAttribute(attr));
                 elem.setAttribute(attr, str);
             }
 
             function translateTextNode(node) {
-                var str = node.data.trim();
-                str = self.get(str);
+                const str = translateString(node.data);
                 node.data = str;
             }
 
@@ -134,7 +143,7 @@ Localizer.prototype = {
                 }
                 if (elem.hasAttribute("label") &&
                     isAnyOf(elem.tagName, ["MENUITEM", "MENU", "OPTGROUP",
-                                   "OPTION", "TRACK"])) {
+                                           "OPTION", "TRACK"])) {
                     translateAttribute(elem, "label");
                 }
                 // FIXME: Should update "lang"
@@ -152,8 +161,8 @@ Localizer.prototype = {
                 }
             }
 
-            for (var i = 0;i < elem.childNodes.length;i++) {
-                var node = elem.childNodes[i];
+            for (let i = 0; i < elem.childNodes.length; i++) {
+                const node = elem.childNodes[i];
                 if (node.nodeType === node.ELEMENT_NODE) {
                     process(node, enabled);
                 } else if (node.nodeType === node.TEXT_NODE && enabled) {
@@ -163,8 +172,8 @@ Localizer.prototype = {
         }
 
         process(document.body, true);
-    },
-};
+    }
+}
 
-export var l10n = new Localizer();
+export const l10n = new Localizer();
 export default l10n.get.bind(l10n);

app/styles/base.css

@@ -1,8 +1,6 @@
 /*
  * noVNC base CSS
- * Copyright (C) 2012 Joel Martin
- * Copyright (C) 2016 Samuel Mannehed for Cendio AB
- * Copyright (C) 2016 Pierre Ossman for Cendio AB
+ * Copyright (C) 2019 The noVNC Authors
  * noVNC is licensed under the MPL 2.0 (see LICENSE.txt)
  * This file is licensed under the 2-Clause BSD license (see LICENSE.txt).
  */
@@ -21,10 +19,23 @@
  * 10000: Max (used for polyfills)
  */
 
+/*
+ * State variables (set on :root):
+ *
+ * noVNC_loading: Page is still loading
+ * noVNC_connecting: Connecting to server
+ * noVNC_reconnecting: Re-establishing a connection
+ * noVNC_connected: Connected to server (most common state)
+ * noVNC_disconnecting: Disconnecting from server
+ */
+
+:root {
+  font-family: sans-serif;
+}
+
 body {
   margin:0;
   padding:0;
-  font-family: Helvetica;
   /*Background image with light grey curve.*/
   background-color:#494949;
   background-repeat:no-repeat;
@@ -80,88 +91,6 @@ html {
   50% { box-shadow: 60px 10px 0 rgba(255, 255, 255, 0); width: 10px; }
 }
 
-/* ----------------------------------------
- * Input Elements
- * ----------------------------------------
- */
-
-input[type=input], input[type=password], input[type=number],
-input:not([type]), textarea {
-  /* Disable default rendering */
-  -webkit-appearance: none;
-  -moz-appearance: none;
-  background: none;
-
-  margin: 2px;
-  padding: 2px;
-  border: 1px solid rgb(192, 192, 192);
-  border-radius: 5px;
-  color: black;
-  background: linear-gradient(to top, rgb(255, 255, 255) 80%, rgb(240, 240, 240));
-}
-
-input[type=button], input[type=submit], select {
-  /* Disable default rendering */
-  -webkit-appearance: none;
-  -moz-appearance: none;
-  background: none;
-
-  margin: 2px;
-  padding: 2px;
-  border: 1px solid rgb(192, 192, 192);
-  border-bottom-width: 2px;
-  border-radius: 5px;
-  color: black;
-  background: linear-gradient(to top, rgb(255, 255, 255), rgb(240, 240, 240));
-
-  /* This avoids it jumping around when :active */
-  vertical-align: middle;
-}
-
-input[type=button], input[type=submit] {
-  padding-left: 20px;
-  padding-right: 20px;
-}
-
-option {
-  color: black;
-  background: white;
-}
-
-input[type=input]:focus, input[type=password]:focus,
-input:not([type]):focus, input[type=button]:focus,
-input[type=submit]:focus,
-textarea:focus, select:focus {
-  box-shadow: 0px 0px 3px rgba(74, 144, 217, 0.5);
-  border-color: rgb(74, 144, 217);
-  outline: none;
-}
-
-input[type=button]::-moz-focus-inner,
-input[type=submit]::-moz-focus-inner {
-  border: none;
-}
-
-input[type=input]:disabled, input[type=password]:disabled,
-input:not([type]):disabled, input[type=button]:disabled,
-input[type=submit]:disabled, input[type=number]:disabled,
-textarea:disabled, select:disabled {
-  color: rgb(128, 128, 128);
-  background: rgb(240, 240, 240);
-}
-
-input[type=button]:active, input[type=submit]:active,
-select:active {
-  border-bottom-width: 1px;
-  margin-top: 3px;
-}
-
-:root:not(.noVNC_touch) input[type=button]:hover:not(:disabled),
-:root:not(.noVNC_touch) input[type=submit]:hover:not(:disabled),
-:root:not(.noVNC_touch) select:hover:not(:disabled) {
-  background: linear-gradient(to top, rgb(255, 255, 255), rgb(250, 250, 250));
-}
-
 /* ----------------------------------------
  * WebKit centering hacks
  * ----------------------------------------
@@ -188,13 +117,15 @@ select:active {
   pointer-events: auto;
 }
 .noVNC_vcenter {
-  display: flex;
+  display: flex !important;
   flex-direction: column;
   justify-content: center;
   position: fixed;
   top: 0;
   left: 0;
   height: 100%;
+  margin: 0 !important;
+  padding: 0 !important;
   pointer-events: none;
 }
 .noVNC_vcenter > * {
@@ -218,13 +149,20 @@ select:active {
 #noVNC_fallback_error {
   z-index: 1000;
   visibility: hidden;
+  /* Put a dark background in front of everything but the error,
+     and don't let mouse events pass through */
+  background: rgba(0, 0, 0, 0.8);
+  pointer-events: all;
 }
 #noVNC_fallback_error.noVNC_open {
   visibility: visible;
 }
 
 #noVNC_fallback_error > div {
-  max-width: 90%;
+  max-width: calc(100vw - 30px - 30px);
+  max-height: calc(100vh - 30px - 30px);
+  overflow: auto;
+
   padding: 15px;
 
   transition: 0.5s ease-in-out;
@@ -263,7 +201,6 @@ select:active {
 }
 
 #noVNC_fallback_error .noVNC_stack {
-  max-height: 50vh;
   padding: 10px;
   margin: 10px;
   font-size: 0.8em;
@@ -307,6 +244,9 @@ select:active {
   background-color: rgb(110, 132, 163);
   border-radius: 0 10px 10px 0;
 
+  user-select: none;
+  -webkit-user-select: none;
+  -webkit-touch-callout: none; /* Disable iOS image long-press popup */
 }
 #noVNC_control_bar.noVNC_open {
   box-shadow: 6px 6px 0px rgba(0, 0, 0, 0.5);
@@ -379,38 +319,50 @@ select:active {
 .noVNC_right #noVNC_control_bar.noVNC_open #noVNC_control_bar_handle:after {
   transform: none;
 }
+/* Larger touch area for the handle, used when a touch screen is available */
 #noVNC_control_bar_handle div {
   position: absolute;
   right: -35px;
   top: 0;
   width: 50px;
-  height: 50px;
-}
-:root:not(.noVNC_touch) #noVNC_control_bar_handle div {
+  height: 100%;
   display: none;
 }
+@media (any-pointer: coarse) {
+  #noVNC_control_bar_handle div {
+    display: initial;
+  }
+}
 .noVNC_right #noVNC_control_bar_handle div {
   left: -35px;
   right: auto;
 }
 
-#noVNC_control_bar .noVNC_scroll {
+#noVNC_control_bar > .noVNC_scroll {
   max-height: 100vh; /* Chrome is buggy with 100% */
   overflow-x: hidden;
   overflow-y: auto;
-  padding: 0 10px 0 5px;
+  padding: 0 10px;
 }
-.noVNC_right #noVNC_control_bar .noVNC_scroll {
-  padding: 0 5px 0 10px;
+
+#noVNC_control_bar > .noVNC_scroll > * {
+  display: block;
+  margin: 10px auto;
 }
 
 /* Control bar hint */
-#noVNC_control_bar_hint {
+#noVNC_hint_anchor {
   position: fixed;
-  left: calc(100vw - 50px);
+  right: -50px;
+  left: auto;
+}
+#noVNC_control_bar_anchor.noVNC_right + #noVNC_hint_anchor {
+  left: -50px;
   right: auto;
-  top: 50%;
-  transform: translateY(-50%) scale(0);
+}
+#noVNC_control_bar_hint {
+  position: relative;
+  transform: scale(0);
   width: 100px;
   height: 50%;
   max-height: 600px;
@@ -423,61 +375,65 @@ select:active {
   border-radius: 10px;
   transition-delay: 0s;
 }
-#noVNC_control_bar_anchor.noVNC_right #noVNC_control_bar_hint{
-  left: auto;
-  right: calc(100vw - 50px);
-}
 #noVNC_control_bar_hint.noVNC_active {
   visibility: visible;
   opacity: 1;
   transition-delay: 0.2s;
-  transform: translateY(-50%) scale(1);
+  transform: scale(1);
+}
+#noVNC_control_bar_hint.noVNC_notransition {
+  transition: none !important;
 }
 
-/* General button style */
-.noVNC_button {
-  display: block;
+/* Control bar buttons */
+#noVNC_control_bar .noVNC_button {
   padding: 4px 4px;
-  margin: 10px 0;
   vertical-align: middle;
   border:1px solid rgba(255, 255, 255, 0.2);
   border-radius: 6px;
+  background-color: transparent;
+  background-image: unset; /* we don't want the gradiant from input.css */
 }
-.noVNC_button.noVNC_selected {
+#noVNC_control_bar .noVNC_button.noVNC_selected {
   border-color: rgba(0, 0, 0, 0.8);
-  background: rgba(0, 0, 0, 0.5);
+  background-color: rgba(0, 0, 0, 0.5);
 }
-.noVNC_button:disabled {
-  opacity: 0.4;
+#noVNC_control_bar .noVNC_button.noVNC_selected:not(:disabled):hover {
+  border-color: rgba(0, 0, 0, 0.4);
+  background-color: rgba(0, 0, 0, 0.2);
 }
-.noVNC_button:focus {
-  outline: none;
+#noVNC_control_bar .noVNC_button:not(:disabled):hover {
+  background-color: rgba(255, 255, 255, 0.2);
 }
-.noVNC_button:active {
+#noVNC_control_bar .noVNC_button:not(:disabled):active {
   padding-top: 5px;
   padding-bottom: 3px;
 }
-/* Android browsers don't properly update hover state if touch events
- * are intercepted, but focus should be safe to display */
-:root:not(.noVNC_touch) .noVNC_button.noVNC_selected:hover,
-.noVNC_button.noVNC_selected:focus {
-  border-color: rgba(0, 0, 0, 0.4);
-  background: rgba(0, 0, 0, 0.2);
+#noVNC_control_bar .noVNC_button.noVNC_hidden {
+  display: none !important;
 }
-:root:not(.noVNC_touch) .noVNC_button:hover,
-.noVNC_button:focus {
-  background: rgba(255, 255, 255, 0.2);
-}
-.noVNC_button.noVNC_hidden {
-  display: none;
+
+/* Android browsers don't properly update hover state if touch events are
+ * intercepted, like they are when clicking on the remote screen. */
+@media (any-pointer: coarse) {
+  #noVNC_control_bar .noVNC_button:not(:disabled):hover {
+    background-color: transparent;
+  }
+  #noVNC_control_bar .noVNC_button.noVNC_selected:not(:disabled):hover {
+    border-color: rgba(0, 0, 0, 0.8);
+    background-color: rgba(0, 0, 0, 0.5);
+  }
 }
 
+
 /* Panels */
 .noVNC_panel {
   transform: translateX(25px);
 
   transition: 0.5s ease-in-out;
 
+  box-sizing: border-box; /* so max-width don't have to care about padding */
+  max-width: calc(100vw - 75px - 25px); /* minus left and right margins */
   max-height: 100vh; /* Chrome is buggy with 100% */
   overflow-x: hidden;
   overflow-y: auto;
@@ -509,6 +465,17 @@ select:active {
   transform: translateX(-75px);
 }
 
+.noVNC_panel > * {
+  display: block;
+  margin: 10px auto;
+}
+.noVNC_panel > *:first-child {
+  margin-top: 0 !important;
+}
+.noVNC_panel > *:last-child {
+  margin-bottom: 0 !important;
+}
+
 .noVNC_panel hr {
   border: none;
   border-top: 1px solid rgb(192, 192, 192);
@@ -517,6 +484,11 @@ select:active {
 .noVNC_panel label {
   display: block;
   white-space: nowrap;
+  margin: 5px;
+}
+
+.noVNC_panel li {
+  margin: 5px;
 }
 
 .noVNC_panel .noVNC_heading {
@@ -527,7 +499,6 @@ select:active {
   padding-right: 8px;
   color: white;
   font-size: 20px;
-  margin-bottom: 10px;
   white-space: nowrap;
 }
 .noVNC_panel .noVNC_heading img {
@@ -568,6 +539,12 @@ select:active {
   font-size: 13px;
 }
 
+.noVNC_logo + hr {
+    /* Remove all but top border */
+    border: none;
+    border-top: 1px solid rgba(255, 255, 255, 0.2);
+}
+
 :root:not(.noVNC_connected) #noVNC_view_drag_button {
   display: none;
 }
@@ -576,19 +553,26 @@ select:active {
 :root:not(.noVNC_connected) #noVNC_mobile_buttons {
   display: none;
 }
-:root:not(.noVNC_touch) #noVNC_mobile_buttons {
-  display: none;
+@media not all and (any-pointer: coarse) {
+  /* FIXME: The button for the virtual keyboard is the only button in this
+            group of "mobile buttons". It is bad to assume that no touch
+            devices have physical keyboards available. Hopefully we can get
+            a media query for this:
+            https://github.com/w3c/csswg-drafts/issues/3871 */
+  :root.noVNC_connected #noVNC_mobile_buttons {
+    display: none;
+  }
 }
 
 /* Extra manual keys */
-:root:not(.noVNC_connected) #noVNC_extra_keys {
+:root:not(.noVNC_connected) #noVNC_toggle_extra_keys_button {
   display: none;
 }
 
 #noVNC_modifiers {
   background-color: rgb(92, 92, 92);
   border: none;
-  padding: 0 10px;
+  padding: 10px;
 }
 
 /* Shutdown/Reboot */
@@ -609,13 +593,16 @@ select:active {
 :root:not(.noVNC_connected) #noVNC_clipboard_button {
   display: none;
 }
-#noVNC_clipboard {
-  /* Full screen, minus padding and left and right margins */
-  max-width: calc(100vw - 2*15px - 75px - 25px);
-}
 #noVNC_clipboard_text {
-  width: 500px;
+  width: 360px;
+  min-width: 150px;
+  height: 160px;
+  min-height: 70px;
+
+  box-sizing: border-box;
   max-width: 100%;
+  /* minus approximate height of title, height of subtitle, and margin */
+  max-height: calc(100vh - 10em - 25px);
 }
 
 /* Settings */
@@ -623,7 +610,6 @@ select:active {
 }
 #noVNC_settings ul {
   list-style: none;
-  margin: 0px;
   padding: 0px;
 }
 #noVNC_setting_port {
@@ -633,6 +619,16 @@ select:active {
   width: 100px;
 }
 
+/* Version */
+
+.noVNC_version_wrapper {
+  font-size: small;
+}
+
+.noVNC_version {
+  margin-left: 1rem;
+}
+
 /* Connection Controls */
 :root:not(.noVNC_connected) #noVNC_disconnect_button {
   display: none;
@@ -739,36 +735,32 @@ select:active {
     font-size: calc(25vw - 30px);
   }
 }
-#noVNC_connect_button {
-  cursor: pointer;
+#noVNC_connect_dlg div {
+  padding: 12px;
 
-  padding: 10px;
-
-  color: white;
   background-color: rgb(110, 132, 163);
   border-radius: 12px;
-
   text-align: center;
   font-size: 20px;
 
   box-shadow: 6px 6px 0px rgba(0, 0, 0, 0.5);
 }
-#noVNC_connect_button div {
-  margin: 2px;
+#noVNC_connect_button {
+  width: 100%;
   padding: 5px 30px;
-  border: 1px solid rgb(83, 99, 122);
-  border-bottom-width: 2px;
+
+  cursor: pointer;
+
+  border-color: rgb(83, 99, 122);
   border-radius: 5px;
+
   background: linear-gradient(to top, rgb(110, 132, 163), rgb(99, 119, 147));
+  color: white;
 
   /* This avoids it jumping around when :active */
   vertical-align: middle;
 }
-#noVNC_connect_button div:active {
-  border-bottom-width: 1px;
-  margin-top: 3px;
-}
-:root:not(.noVNC_touch) #noVNC_connect_button div:hover {
+#noVNC_connect_button:hover {
   background: linear-gradient(to top, rgb(110, 132, 163), rgb(105, 125, 155));
 }
 
@@ -778,24 +770,41 @@ select:active {
 }
 
 /* ----------------------------------------
- * Password Dialog
+ * Server verification Dialog
  * ----------------------------------------
  */
 
-#noVNC_password_dlg {
+#noVNC_verify_server_dlg {
   position: relative;
 
   transform: translateY(-50px);
 }
-#noVNC_password_dlg.noVNC_open {
+#noVNC_verify_server_dlg.noVNC_open {
   transform: translateY(0);
 }
-#noVNC_password_dlg ul {
-  list-style: none;
-  margin: 0px;
-  padding: 0px;
+#noVNC_fingerprint_block {
+  margin: 10px;
 }
 
+/* ----------------------------------------
+ * Password Dialog
+ * ----------------------------------------
+ */
+
+#noVNC_credentials_dlg {
+  position: relative;
+
+  transform: translateY(-50px);
+}
+#noVNC_credentials_dlg.noVNC_open {
+  transform: translateY(0);
+}
+#noVNC_username_block.noVNC_hidden,
+#noVNC_password_block.noVNC_hidden {
+  display: none;
+}
+
+
 /* ----------------------------------------
  * Main Area
  * ----------------------------------------
@@ -803,7 +812,11 @@ select:active {
 
 /* Transition screen */
 #noVNC_transition {
-  display: none;
+  transition: 0.5s ease-in-out;
+
+  display: flex;
+  opacity: 0;
+  visibility: hidden;
 
   position: fixed;
   top: 0;
@@ -824,7 +837,8 @@ select:active {
 :root.noVNC_connecting #noVNC_transition,
 :root.noVNC_disconnecting #noVNC_transition,
 :root.noVNC_reconnecting #noVNC_transition {
-  display: flex;
+  opacity: 1;
+  visibility: visible;
 }
 :root:not(.noVNC_reconnecting) #noVNC_cancel_reconnect_button {
   display: none;
@@ -840,6 +854,12 @@ select:active {
   background-color: #313131;
   border-bottom-right-radius: 800px 600px;
   /*border-top-left-radius: 800px 600px;*/
+
+  /* If selection isn't disabled, long-pressing stuff in the sidebar
+     can accidentally select the container or the canvas. This can
+     happen when attempting to move the handle. */
+  user-select: none;
+  -webkit-user-select: none;
 }
 
 #noVNC_keyboardinput {

app/styles/input.css

@@ -0,0 +1,281 @@
+/*
+ * noVNC general input element CSS
+ * Copyright (C) 2022 The noVNC Authors
+ * noVNC is licensed under the MPL 2.0 (see LICENSE.txt)
+ * This file is licensed under the 2-Clause BSD license (see LICENSE.txt).
+ */
+
+/*
+ * Common for all inputs
+ */
+input, input::file-selector-button, button, select, textarea {
+  /* Respect standard font settings */
+  font: inherit;
+
+  /* Disable default rendering */
+  appearance: none;
+  background: none;
+
+  padding: 5px;
+  border: 1px solid rgb(192, 192, 192);
+  border-radius: 5px;
+  color: black;
+  --bg-gradient: linear-gradient(to top, rgb(255, 255, 255) 80%, rgb(240, 240, 240));
+  background-image: var(--bg-gradient);
+}
+
+/*
+ * Buttons
+ */
+input[type=button],
+input[type=color],
+input[type=image],
+input[type=reset],
+input[type=submit],
+input::file-selector-button,
+button,
+select {
+  border-bottom-width: 2px;
+
+  /* This avoids it jumping around when :active */
+  vertical-align: middle;
+  margin-top: 0;
+
+  padding-left: 20px;
+  padding-right: 20px;
+
+  /* Disable Chrome's touch tap highlight */
+  -webkit-tap-highlight-color: transparent;
+}
+
+/*
+ * Select dropdowns
+ */
+select {
+  --select-arrow: url('data:image/svg+xml;utf8, \
+      <svg width="8" height="6" version="1.1" viewBox="0 0 8 6" \
+           xmlns="http://www.w3.org/2000/svg"> \
+          <path d="m6.5 1.5 -2.5 3 -2.5 -3 5 0" stroke-width="3" \
+                stroke="rgb(31,31,31)" fill="none" \
+                stroke-linecap="round" stroke-linejoin="round" /> \
+      </svg>');
+  background-image: var(--select-arrow), var(--bg-gradient);
+  background-position: calc(100% - 7px), left top;
+  background-repeat: no-repeat;
+  padding-right: calc(2*7px + 8px);
+  padding-left: 7px;
+}
+/* FIXME: :active isn't set when the <select> is opened in Firefox:
+          https://bugzilla.mozilla.org/show_bug.cgi?id=1805406 */
+select:active {
+  /* Rotated arrow */
+  background-image: url('data:image/svg+xml;utf8, \
+      <svg width="8" height="6" version="1.1" viewBox="0 0 8 6" \
+           xmlns="http://www.w3.org/2000/svg" transform="rotate(180)" > \
+          <path d="m6.5 1.5 -2.5 3 -2.5 -3 5 0" stroke-width="3" \
+                stroke="rgb(31,31,31)" fill="none" \
+                stroke-linecap="round" stroke-linejoin="round" /> \
+      </svg>'), var(--bg-gradient);
+}
+option {
+  color: black;
+  background: white;
+}
+
+/*
+ * Checkboxes
+ */
+input[type=checkbox] {
+  background-color: white;
+  background-image: unset;
+  border: 1px solid dimgrey;
+  border-radius: 3px;
+  width: 13px;
+  height: 13px;
+  padding: 0;
+  margin-right: 6px;
+  vertical-align: bottom;
+  transition: 0.2s background-color linear;
+}
+input[type=checkbox]:checked {
+  background-color: rgb(110, 132, 163);
+  border-color: rgb(110, 132, 163);
+}
+input[type=checkbox]:checked::after {
+  content: "";
+  display: block; /* width & height doesn't work on inline elements */
+  position: relative;
+  top: 0;
+  left: 3px;
+  width: 3px;
+  height: 7px;
+  border: 1px solid white;
+  border-width: 0 2px 2px 0;
+  transform: rotate(40deg);
+}
+
+/*
+ * Radiobuttons
+ */
+input[type=radio] {
+  border-radius: 50%;
+  border: 1px solid dimgrey;
+  width: 12px;
+  height: 12px;
+  padding: 0;
+  margin-right: 6px;
+  transition: 0.2s border linear;
+}
+input[type=radio]:checked {
+  border: 6px solid rgb(110, 132, 163);
+}
+
+/*
+ * Range sliders
+ */
+input[type=range] {
+  border: unset;
+  border-radius: 3px;
+  height: 20px;
+  padding: 0;
+  background: transparent;
+}
+/* -webkit-slider.. & -moz-range.. cant be in selector lists:
+   https://bugs.chromium.org/p/chromium/issues/detail?id=1154623 */
+input[type=range]::-webkit-slider-runnable-track {
+  background-color: rgb(110, 132, 163);
+  height: 6px;
+  border-radius: 3px;
+}
+input[type=range]::-moz-range-track {
+  background-color: rgb(110, 132, 163);
+  height: 6px;
+  border-radius: 3px;
+}
+input[type=range]::-webkit-slider-thumb {
+  appearance: none;
+  width: 18px;
+  height: 20px;
+  border-radius: 5px;
+  background-color: white;
+  border: 1px solid dimgray;
+  margin-top: -7px;
+}
+input[type=range]::-moz-range-thumb {
+  appearance: none;
+  width: 18px;
+  height: 20px;
+  border-radius: 5px;
+  background-color: white;
+  border: 1px solid dimgray;
+  margin-top: -7px;
+}
+
+/*
+ * File choosers
+ */
+input[type=file] {
+  background-image: none;
+  border: none;
+}
+input::file-selector-button {
+  margin-right: 6px;
+}
+
+/*
+ * Hover
+ */
+input[type=button]:hover,
+input[type=color]:hover,
+input[type=image]:hover,
+input[type=reset]:hover,
+input[type=submit]:hover,
+input::file-selector-button:hover,
+button:hover {
+  background-image: linear-gradient(to top, rgb(255, 255, 255), rgb(250, 250, 250));
+}
+select:hover {
+  background-image: var(--select-arrow),
+    linear-gradient(to top, rgb(255, 255, 255), rgb(250, 250, 250));
+  background-position: calc(100% - 7px), left top;
+  background-repeat: no-repeat;
+}
+@media (any-pointer: coarse) {
+  /* We don't want a hover style after touch input */
+  input[type=button]:hover,
+  input[type=color]:hover,
+  input[type=image]:hover,
+  input[type=reset]:hover,
+  input[type=submit]:hover,
+  input::file-selector-button:hover,
+  button:hover {
+    background-image: var(--bg-gradient);
+  }
+  select:hover {
+    background-image: var(--select-arrow), var(--bg-gradient);
+  }
+}
+
+/*
+ * Active (clicked)
+ */
+input[type=button]:active,
+input[type=color]:active,
+input[type=image]:active,
+input[type=reset]:active,
+input[type=submit]:active,
+input::file-selector-button:active,
+button:active,
+select:active {
+  border-bottom-width: 1px;
+  margin-top: 1px;
+}
+
+/*
+ * Focus (tab)
+ */
+input:focus-visible,
+input:focus-visible::file-selector-button,
+button:focus-visible,
+select:focus-visible,
+textarea:focus-visible {
+  outline: 2px solid rgb(74, 144, 217);
+  outline-offset: 1px;
+}
+input[type=file]:focus-visible {
+  outline: none; /* We outline the button instead of the entire element */
+}
+
+/*
+ * Disabled
+ */
+input:disabled,
+input:disabled::file-selector-button,
+button:disabled,
+select:disabled,
+textarea:disabled {
+  opacity: 0.4;
+}
+input[type=button]:disabled,
+input[type=color]:disabled,
+input[type=image]:disabled,
+input[type=reset]:disabled,
+input[type=submit]:disabled,
+input:disabled::file-selector-button,
+button:disabled,
+select:disabled {
+  background-image: var(--bg-gradient);
+  border-bottom-width: 2px;
+  margin-top: 0;
+}
+input[type=file]:disabled {
+  background-image: none;
+}
+select:disabled {
+  background-image: var(--select-arrow), var(--bg-gradient);
+}
+input[type=image]:disabled {
+  /* See Firefox bug:
+     https://bugzilla.mozilla.org/show_bug.cgi?id=1798304 */
+  cursor: default;
+}

app/styles/lite.css

@@ -1,63 +0,0 @@
-/*
- * noVNC auto CSS
- * Copyright (C) 2012 Joel Martin
- * Copyright (C) 2017 Samuel Mannehed for Cendio AB
- * noVNC is licensed under the MPL 2.0 (see LICENSE.txt)
- * This file is licensed under the 2-Clause BSD license (see LICENSE.txt).
- */
-
-body {
-  margin:0;
-  background-color:#313131;
-  border-bottom-right-radius: 800px 600px;
-  height:100%;
-  display: flex;
-  flex-direction: column;
-}
-
-html {
-  background-color:#494949;
-  height:100%;
-}
-
-#noVNC_status_bar {
-  width: 100%;
-  display:flex;
-  justify-content: space-between;
-}
-
-#noVNC_status {
-  color: #fff;
-  font: bold 12px Helvetica;
-  margin: auto;
-}
-
-.noVNC_status_normal {
-  background: linear-gradient(#b2bdcd 0%,#899cb3 49%,#7e93af 51%,#6e84a3 100%);
-}
-
-.noVNC_status_error {
-  background: linear-gradient(#c83737 0%,#899cb3 49%,#7e93af 51%,#6e84a3 100%);
-}
-
-.noVNC_status_warn {
-  background: linear-gradient(#b4b41e 0%,#899cb3 49%,#7e93af 51%,#6e84a3 100%);
-}
-
-.noNVC_shown {
-  display: inline;
-}
-.noVNC_hidden {
-  display: none;
-}
-
-#noVNC_left_dummy_elem {
-  flex: 1;
-}
-
-#noVNC_buttons {
-  padding: 1px;
-  flex: 1;
-  display: flex;
-  justify-content: flex-end;
-}

app/webutil.js

@@ -1,70 +1,82 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
- * Copyright (C) 2013 NTT corp.
+ * Copyright (C) 2019 The noVNC Authors
  * Licensed under MPL 2.0 (see LICENSE.txt)
  *
  * See README.md for usage and integration instructions.
  */
 
-import { init_logging as main_init_logging } from '../core/util/logging.js';
+import { initLogging as mainInitLogging } from '../core/util/logging.js';
 
 // init log level reading the logging HTTP param
-export function init_logging (level) {
+export function initLogging(level) {
     "use strict";
     if (typeof level !== "undefined") {
-        main_init_logging(level);
+        mainInitLogging(level);
     } else {
-        var param = document.location.href.match(/logging=([A-Za-z0-9\._\-]*)/);
-        main_init_logging(param || undefined);
+        const param = document.location.href.match(/logging=([A-Za-z0-9._-]*)/);
+        mainInitLogging(param || undefined);
     }
-};
+}
 
 // Read a query string variable
-export function getQueryVar (name, defVal) {
+// A URL with a query parameter can look like this (But will most probably get logged on the http server):
+// https://www.example.com?myqueryparam=myvalue
+//
+// For privacy (Using a hastag #, the parameters will not be sent to the server)
+// the url can be requested in the following way:
+// https://www.example.com#myqueryparam=myvalue&password=secreatvalue
+//
+// Even Mixing public and non public parameters will work:
+// https://www.example.com?nonsecretparam=example.com#password=secreatvalue
+export function getQueryVar(name, defVal) {
     "use strict";
-    var re = new RegExp('.*[?&]' + name + '=([^&#]*)'),
-        match = document.location.href.match(re);
+    const re = new RegExp('.*[?&]' + name + '=([^&#]*)'),
+          match = ''.concat(document.location.href, window.location.hash).match(re);
     if (typeof defVal === 'undefined') { defVal = null; }
+
     if (match) {
         return decodeURIComponent(match[1]);
-    } else {
-        return defVal;
     }
-};
+
+    return defVal;
+}
 
 // Read a hash fragment variable
-export function getHashVar (name, defVal) {
+export function getHashVar(name, defVal) {
     "use strict";
-    var re = new RegExp('.*[&#]' + name + '=([^&]*)'),
-        match = document.location.hash.match(re);
+    const re = new RegExp('.*[&#]' + name + '=([^&]*)'),
+          match = document.location.hash.match(re);
     if (typeof defVal === 'undefined') { defVal = null; }
+
     if (match) {
         return decodeURIComponent(match[1]);
-    } else {
-        return defVal;
     }
-};
+
+    return defVal;
+}
 
 // Read a variable from the fragment or the query string
 // Fragment takes precedence
-export function getConfigVar (name, defVal) {
+export function getConfigVar(name, defVal) {
     "use strict";
-    var val = getHashVar(name);
+    const val = getHashVar(name);
+
     if (val === null) {
-        val = getQueryVar(name, defVal);
+        return getQueryVar(name, defVal);
     }
+
     return val;
-};
+}
 
 /*
  * Cookie handling. Dervied from: http://www.quirksmode.org/js/cookies.html
  */
 
 // No days means only for this browser session
-export function createCookie (name, value, days) {
+export function createCookie(name, value, days) {
     "use strict";
-    var date, expires;
+    let date, expires;
     if (days) {
         date = new Date();
         date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
@@ -73,158 +85,102 @@ export function createCookie (name, value, days) {
         expires = "";
     }
 
-    var secure;
+    let secure;
     if (document.location.protocol === "https:") {
         secure = "; secure";
     } else {
         secure = "";
     }
     document.cookie = name + "=" + value + expires + "; path=/" + secure;
-};
+}
 
-export function readCookie (name, defaultValue) {
+export function readCookie(name, defaultValue) {
     "use strict";
-    var nameEQ = name + "=",
-        ca = document.cookie.split(';');
+    const nameEQ = name + "=";
+    const ca = document.cookie.split(';');
 
-    for (var i = 0; i < ca.length; i += 1) {
-        var c = ca[i];
-        while (c.charAt(0) === ' ') { c = c.substring(1, c.length); }
-        if (c.indexOf(nameEQ) === 0) { return c.substring(nameEQ.length, c.length); }
+    for (let i = 0; i < ca.length; i += 1) {
+        let c = ca[i];
+        while (c.charAt(0) === ' ') {
+            c = c.substring(1, c.length);
+        }
+        if (c.indexOf(nameEQ) === 0) {
+            return c.substring(nameEQ.length, c.length);
+        }
     }
-    return (typeof defaultValue !== 'undefined') ? defaultValue : null;
-};
 
-export function eraseCookie (name) {
+    return (typeof defaultValue !== 'undefined') ? defaultValue : null;
+}
+
+export function eraseCookie(name) {
     "use strict";
     createCookie(name, "", -1);
-};
+}
 
 /*
  * Setting handling.
  */
 
-var settings = {};
+let settings = {};
 
-export function initSettings (callback /*, ...callbackArgs */) {
-    "use strict";
-    var callbackArgs = Array.prototype.slice.call(arguments, 1);
-    if (window.chrome && window.chrome.storage) {
-        window.chrome.storage.sync.get(function (cfg) {
-            settings = cfg;
-            if (callback) {
-                callback.apply(this, callbackArgs);
-            }
-        });
-    } else {
-        // No-op
-        if (callback) {
-            callback.apply(this, callbackArgs);
-        }
+export function initSettings() {
+    if (!window.chrome || !window.chrome.storage) {
+        settings = {};
+        return Promise.resolve();
     }
-};
+
+    return new Promise(resolve => window.chrome.storage.sync.get(resolve))
+        .then((cfg) => { settings = cfg; });
+}
+
+// Update the settings cache, but do not write to permanent storage
+export function setSetting(name, value) {
+    settings[name] = value;
+}
 
 // No days means only for this browser session
-export function writeSetting (name, value) {
+export function writeSetting(name, value) {
     "use strict";
+    if (settings[name] === value) return;
+    settings[name] = value;
     if (window.chrome && window.chrome.storage) {
-        if (settings[name] !== value) {
-            settings[name] = value;
-            window.chrome.storage.sync.set(settings);
-        }
+        window.chrome.storage.sync.set(settings);
     } else {
         localStorage.setItem(name, value);
     }
-};
+}
 
-export function readSetting (name, defaultValue) {
+export function readSetting(name, defaultValue) {
     "use strict";
-    var value;
-    if (window.chrome && window.chrome.storage) {
+    let value;
+    if ((name in settings) || (window.chrome && window.chrome.storage)) {
         value = settings[name];
     } else {
         value = localStorage.getItem(name);
+        settings[name] = value;
     }
     if (typeof value === "undefined") {
         value = null;
     }
+
     if (value === null && typeof defaultValue !== "undefined") {
         return defaultValue;
-    } else {
-        return value;
     }
-};
 
-export function eraseSetting (name) {
+    return value;
+}
+
+export function eraseSetting(name) {
     "use strict";
+    // Deleting here means that next time the setting is read when using local
+    // storage, it will be pulled from local storage again.
+    // If the setting in local storage is changed (e.g. in another tab)
+    // between this delete and the next read, it could lead to an unexpected
+    // value change.
+    delete settings[name];
     if (window.chrome && window.chrome.storage) {
         window.chrome.storage.sync.remove(name);
-        delete settings[name];
     } else {
         localStorage.removeItem(name);
     }
-};
-
-export function injectParamIfMissing (path, param, value) {
-    // force pretend that we're dealing with a relative path
-    // (assume that we wanted an extra if we pass one in)
-    path = "/" + path;
-
-    var elem = document.createElement('a');
-    elem.href = path;
-
-    var param_eq = encodeURIComponent(param) + "=";
-    var query;
-    if (elem.search) {
-        query = elem.search.slice(1).split('&');
-    } else {
-        query = [];
-    }
-
-    if (!query.some(function (v) { return v.startsWith(param_eq); })) {
-        query.push(param_eq + encodeURIComponent(value));
-        elem.search = "?" + query.join("&");
-    }
-
-    // some browsers (e.g. IE11) may occasionally omit the leading slash
-    // in the elem.pathname string. Handle that case gracefully.
-    if (elem.pathname.charAt(0) == "/") {
-        return elem.pathname.slice(1) + elem.search + elem.hash;
-    } else {
-        return elem.pathname + elem.search + elem.hash;
-    }
-};
-
-// sadly, we can't use the Fetch API until we decide to drop
-// IE11 support or polyfill promises and fetch in IE11.
-// resolve will receive an object on success, while reject
-// will receive either an event or an error on failure.
-export function fetchJSON(path, resolve, reject) {
-    // NB: IE11 doesn't support JSON as a responseType
-    var req = new XMLHttpRequest();
-    req.open('GET', path);
-
-    req.onload = function () {
-        if (req.status === 200) {
-            try {
-                var resObj = JSON.parse(req.responseText);
-            } catch (err) {
-                reject(err);
-                return;
-            }
-            resolve(resObj);
-        } else {
-            reject(new Error("XHR got non-200 status while trying to load '" + path + "': " + req.status));
-        }
-    };
-
-    req.onerror = function (evt) {
-        reject(new Error("XHR encountered an error while trying to load '" + path + "': " + evt.message));
-    };
-
-    req.ontimeout = function (evt) {
-        reject(new Error("XHR timed out while trying to load '" + path + "'"));
-    };
-
-    req.send();
 }

core/base64.js

@@ -8,45 +8,43 @@ import * as Log from './util/logging.js';
 
 export default {
     /* Convert data (an array of integers) to a Base64 string. */
-    toBase64Table : 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='.split(''),
-    base64Pad     : '=',
+    toBase64Table: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='.split(''),
+    base64Pad: '=',
 
-    encode: function (data) {
+    encode(data) {
         "use strict";
-        var result = '';
-        var toBase64Table = this.toBase64Table;
-        var length = data.length;
-        var lengthpad = (length % 3);
+        let result = '';
+        const length = data.length;
+        const lengthpad = (length % 3);
         // Convert every three bytes to 4 ascii characters.
 
-        for (var i = 0; i < (length - 2); i += 3) {
-            result += toBase64Table[data[i] >> 2];
-            result += toBase64Table[((data[i] & 0x03) << 4) + (data[i + 1] >> 4)];
-            result += toBase64Table[((data[i + 1] & 0x0f) << 2) + (data[i + 2] >> 6)];
-            result += toBase64Table[data[i + 2] & 0x3f];
+        for (let i = 0; i < (length - 2); i += 3) {
+            result += this.toBase64Table[data[i] >> 2];
+            result += this.toBase64Table[((data[i] & 0x03) << 4) + (data[i + 1] >> 4)];
+            result += this.toBase64Table[((data[i + 1] & 0x0f) << 2) + (data[i + 2] >> 6)];
+            result += this.toBase64Table[data[i + 2] & 0x3f];
         }
 
         // Convert the remaining 1 or 2 bytes, pad out to 4 characters.
-        var j = 0;
+        const j = length - lengthpad;
         if (lengthpad === 2) {
-            j = length - lengthpad;
-            result += toBase64Table[data[j] >> 2];
-            result += toBase64Table[((data[j] & 0x03) << 4) + (data[j + 1] >> 4)];
-            result += toBase64Table[(data[j + 1] & 0x0f) << 2];
-            result += toBase64Table[64];
+            result += this.toBase64Table[data[j] >> 2];
+            result += this.toBase64Table[((data[j] & 0x03) << 4) + (data[j + 1] >> 4)];
+            result += this.toBase64Table[(data[j + 1] & 0x0f) << 2];
+            result += this.toBase64Table[64];
         } else if (lengthpad === 1) {
-            j = length - lengthpad;
-            result += toBase64Table[data[j] >> 2];
-            result += toBase64Table[(data[j] & 0x03) << 4];
-            result += toBase64Table[64];
-            result += toBase64Table[64];
+            result += this.toBase64Table[data[j] >> 2];
+            result += this.toBase64Table[(data[j] & 0x03) << 4];
+            result += this.toBase64Table[64];
+            result += this.toBase64Table[64];
         }
 
         return result;
     },
 
     /* Convert Base64 data to a string */
-    toBinaryTable : [
+    /* eslint-disable comma-spacing */
+    toBinaryTable: [
         -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
         -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
         -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,
@@ -56,27 +54,23 @@ export default {
         -1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,
         41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1
     ],
+    /* eslint-enable comma-spacing */
 
-    decode: function (data, offset) {
-        "use strict";
-        offset = typeof(offset) !== 'undefined' ? offset : 0;
-        var toBinaryTable = this.toBinaryTable;
-        var base64Pad = this.base64Pad;
-        var result, result_length;
-        var leftbits = 0; // number of bits decoded, but yet to be appended
-        var leftdata = 0; // bits decoded, but yet to be appended
-        var data_length = data.indexOf('=') - offset;
-
-        if (data_length < 0) { data_length = data.length - offset; }
+    decode(data, offset = 0) {
+        let dataLength = data.indexOf('=') - offset;
+        if (dataLength < 0) { dataLength = data.length - offset; }
 
         /* Every four characters is 3 resulting numbers */
-        result_length = (data_length >> 2) * 3 + Math.floor((data_length % 4) / 1.5);
-        result = new Array(result_length);
+        const resultLength = (dataLength >> 2) * 3 + Math.floor((dataLength % 4) / 1.5);
+        const result = new Array(resultLength);
 
         // Convert one by one.
-        for (var idx = 0, i = offset; i < data.length; i++) {
-            var c = toBinaryTable[data.charCodeAt(i) & 0x7f];
-            var padding = (data.charAt(i) === base64Pad);
+
+        let leftbits = 0; // number of bits decoded, but yet to be appended
+        let leftdata = 0; // bits decoded, but yet to be appended
+        for (let idx = 0, i = offset; i < data.length; i++) {
+            const c = this.toBinaryTable[data.charCodeAt(i) & 0x7f];
+            const padding = (data.charAt(i) === this.base64Pad);
             // Skip illegal characters and whitespace
             if (c === -1) {
                 Log.Error("Illegal character code " + data.charCodeAt(i) + " at position " + i);
@@ -100,7 +94,7 @@ export default {
 
         // If there are any bits left, the base64 string was corrupted
         if (leftbits) {
-            err = new Error('Corrupted base64 string');
+            const err = new Error('Corrupted base64 string');
             err.name = 'Base64-Error';
             throw err;
         }

core/decoders/copyrect.js

@@ -0,0 +1,27 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+export default class CopyRectDecoder {
+    decodeRect(x, y, width, height, sock, display, depth) {
+        if (sock.rQwait("COPYRECT", 4)) {
+            return false;
+        }
+
+        let deltaX = sock.rQshift16();
+        let deltaY = sock.rQshift16();
+
+        if ((width === 0) || (height === 0)) {
+            return true;
+        }
+
+        display.copyImage(deltaX, deltaY, x, y, width, height);
+
+        return true;
+    }
+}

core/decoders/hextile.js

@@ -0,0 +1,191 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+import * as Log from '../util/logging.js';
+
+export default class HextileDecoder {
+    constructor() {
+        this._tiles = 0;
+        this._lastsubencoding = 0;
+        this._tileBuffer = new Uint8Array(16 * 16 * 4);
+    }
+
+    decodeRect(x, y, width, height, sock, display, depth) {
+        if (this._tiles === 0) {
+            this._tilesX = Math.ceil(width / 16);
+            this._tilesY = Math.ceil(height / 16);
+            this._totalTiles = this._tilesX * this._tilesY;
+            this._tiles = this._totalTiles;
+        }
+
+        while (this._tiles > 0) {
+            let bytes = 1;
+
+            if (sock.rQwait("HEXTILE", bytes)) {
+                return false;
+            }
+
+            let rQ = sock.rQ;
+            let rQi = sock.rQi;
+
+            let subencoding = rQ[rQi];  // Peek
+            if (subencoding > 30) {  // Raw
+                throw new Error("Illegal hextile subencoding (subencoding: " +
+                            subencoding + ")");
+            }
+
+            const currTile = this._totalTiles - this._tiles;
+            const tileX = currTile % this._tilesX;
+            const tileY = Math.floor(currTile / this._tilesX);
+            const tx = x + tileX * 16;
+            const ty = y + tileY * 16;
+            const tw = Math.min(16, (x + width) - tx);
+            const th = Math.min(16, (y + height) - ty);
+
+            // Figure out how much we are expecting
+            if (subencoding & 0x01) {  // Raw
+                bytes += tw * th * 4;
+            } else {
+                if (subencoding & 0x02) {  // Background
+                    bytes += 4;
+                }
+                if (subencoding & 0x04) {  // Foreground
+                    bytes += 4;
+                }
+                if (subencoding & 0x08) {  // AnySubrects
+                    bytes++;  // Since we aren't shifting it off
+
+                    if (sock.rQwait("HEXTILE", bytes)) {
+                        return false;
+                    }
+
+                    let subrects = rQ[rQi + bytes - 1];  // Peek
+                    if (subencoding & 0x10) {  // SubrectsColoured
+                        bytes += subrects * (4 + 2);
+                    } else {
+                        bytes += subrects * 2;
+                    }
+                }
+            }
+
+            if (sock.rQwait("HEXTILE", bytes)) {
+                return false;
+            }
+
+            // We know the encoding and have a whole tile
+            rQi++;
+            if (subencoding === 0) {
+                if (this._lastsubencoding & 0x01) {
+                    // Weird: ignore blanks are RAW
+                    Log.Debug("     Ignoring blank after RAW");
+                } else {
+                    display.fillRect(tx, ty, tw, th, this._background);
+                }
+            } else if (subencoding & 0x01) {  // Raw
+                let pixels = tw * th;
+                // Max sure the image is fully opaque
+                for (let i = 0;i <  pixels;i++) {
+                    rQ[rQi + i * 4 + 3] = 255;
+                }
+                display.blitImage(tx, ty, tw, th, rQ, rQi);
+                rQi += bytes - 1;
+            } else {
+                if (subencoding & 0x02) {  // Background
+                    this._background = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
+                    rQi += 4;
+                }
+                if (subencoding & 0x04) {  // Foreground
+                    this._foreground = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
+                    rQi += 4;
+                }
+
+                this._startTile(tx, ty, tw, th, this._background);
+                if (subencoding & 0x08) {  // AnySubrects
+                    let subrects = rQ[rQi];
+                    rQi++;
+
+                    for (let s = 0; s < subrects; s++) {
+                        let color;
+                        if (subencoding & 0x10) {  // SubrectsColoured
+                            color = [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2], rQ[rQi + 3]];
+                            rQi += 4;
+                        } else {
+                            color = this._foreground;
+                        }
+                        const xy = rQ[rQi];
+                        rQi++;
+                        const sx = (xy >> 4);
+                        const sy = (xy & 0x0f);
+
+                        const wh = rQ[rQi];
+                        rQi++;
+                        const sw = (wh >> 4) + 1;
+                        const sh = (wh & 0x0f) + 1;
+
+                        this._subTile(sx, sy, sw, sh, color);
+                    }
+                }
+                this._finishTile(display);
+            }
+            sock.rQi = rQi;
+            this._lastsubencoding = subencoding;
+            this._tiles--;
+        }
+
+        return true;
+    }
+
+    // start updating a tile
+    _startTile(x, y, width, height, color) {
+        this._tileX = x;
+        this._tileY = y;
+        this._tileW = width;
+        this._tileH = height;
+
+        const red = color[0];
+        const green = color[1];
+        const blue = color[2];
+
+        const data = this._tileBuffer;
+        for (let i = 0; i < width * height * 4; i += 4) {
+            data[i]     = red;
+            data[i + 1] = green;
+            data[i + 2] = blue;
+            data[i + 3] = 255;
+        }
+    }
+
+    // update sub-rectangle of the current tile
+    _subTile(x, y, w, h, color) {
+        const red = color[0];
+        const green = color[1];
+        const blue = color[2];
+        const xend = x + w;
+        const yend = y + h;
+
+        const data = this._tileBuffer;
+        const width = this._tileW;
+        for (let j = y; j < yend; j++) {
+            for (let i = x; i < xend; i++) {
+                const p = (i + (j * width)) * 4;
+                data[p]     = red;
+                data[p + 1] = green;
+                data[p + 2] = blue;
+                data[p + 3] = 255;
+            }
+        }
+    }
+
+    // draw the current tile to the screen
+    _finishTile(display) {
+        display.blitImage(this._tileX, this._tileY,
+                          this._tileW, this._tileH,
+                          this._tileBuffer, 0);
+    }
+}

core/decoders/jpeg.js

@@ -0,0 +1,141 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+export default class JPEGDecoder {
+    constructor() {
+        // RealVNC will reuse the quantization tables
+        // and Huffman tables, so we need to cache them.
+        this._quantTables = [];
+        this._huffmanTables = [];
+        this._cachedQuantTables = [];
+        this._cachedHuffmanTables = [];
+
+        this._jpegLength = 0;
+        this._segments = [];
+    }
+
+    decodeRect(x, y, width, height, sock, display, depth) {
+        // A rect of JPEG encodings is simply a JPEG file
+        if (!this._parseJPEG(sock.rQslice(0))) {
+            return false;
+        }
+        const data = sock.rQshiftBytes(this._jpegLength);
+        if (this._quantTables.length != 0 && this._huffmanTables.length != 0) {
+            // If there are quantization tables and Huffman tables in the JPEG
+            // image, we can directly render it.
+            display.imageRect(x, y, width, height, "image/jpeg", data);
+            return true;
+        } else {
+            // Otherwise we need to insert cached tables.
+            const sofIndex = this._segments.findIndex(
+                x => x[1] == 0xC0 || x[1] == 0xC2
+            );
+            if (sofIndex == -1) {
+                throw new Error("Illegal JPEG image without SOF");
+            }
+            let segments = this._segments.slice(0, sofIndex);
+            segments = segments.concat(this._quantTables.length ?
+                this._quantTables :
+                this._cachedQuantTables);
+            segments.push(this._segments[sofIndex]);
+            segments = segments.concat(this._huffmanTables.length ?
+                this._huffmanTables :
+                this._cachedHuffmanTables,
+                                       this._segments.slice(sofIndex + 1));
+            let length = 0;
+            for (let i = 0; i < segments.length; i++) {
+                length += segments[i].length;
+            }
+            const data = new Uint8Array(length);
+            length = 0;
+            for (let i = 0; i < segments.length; i++) {
+                data.set(segments[i], length);
+                length += segments[i].length;
+            }
+            display.imageRect(x, y, width, height, "image/jpeg", data);
+            return true;
+        }
+    }
+
+    _parseJPEG(buffer) {
+        if (this._quantTables.length != 0) {
+            this._cachedQuantTables = this._quantTables;
+        }
+        if (this._huffmanTables.length != 0) {
+            this._cachedHuffmanTables = this._huffmanTables;
+        }
+        this._quantTables = [];
+        this._huffmanTables = [];
+        this._segments = [];
+        let i = 0;
+        let bufferLength = buffer.length;
+        while (true) {
+            let j = i;
+            if (j + 2 > bufferLength) {
+                return false;
+            }
+            if (buffer[j] != 0xFF) {
+                throw new Error("Illegal JPEG marker received (byte: " +
+                                   buffer[j] + ")");
+            }
+            const type = buffer[j+1];
+            j += 2;
+            if (type == 0xD9) {
+                this._jpegLength = j;
+                this._segments.push(buffer.slice(i, j));
+                return true;
+            } else if (type == 0xDA) {
+                // start of scan
+                let hasFoundEndOfScan = false;
+                for (let k = j + 3; k + 1 < bufferLength; k++) {
+                    if (buffer[k] == 0xFF && buffer[k+1] != 0x00 &&
+                        !(buffer[k+1] >= 0xD0 && buffer[k+1] <= 0xD7)) {
+                        j = k;
+                        hasFoundEndOfScan = true;
+                        break;
+                    }
+                }
+                if (!hasFoundEndOfScan) {
+                    return false;
+                }
+                this._segments.push(buffer.slice(i, j));
+                i = j;
+                continue;
+            } else if (type >= 0xD0 && type < 0xD9 || type == 0x01) {
+                // No length after marker
+                this._segments.push(buffer.slice(i, j));
+                i = j;
+                continue;
+            }
+            if (j + 2 > bufferLength) {
+                return false;
+            }
+            const length = (buffer[j] << 8) + buffer[j+1] - 2;
+            if (length < 0) {
+                throw new Error("Illegal JPEG length received (length: " +
+                                   length + ")");
+            }
+            j += 2;
+            if (j + length > bufferLength) {
+                return false;
+            }
+            j += length;
+            const segment = buffer.slice(i, j);
+            if (type == 0xC4) {
+                // Huffman tables
+                this._huffmanTables.push(segment);
+            } else if (type == 0xDB) {
+                // Quantization tables
+                this._quantTables.push(segment);
+            }
+            this._segments.push(segment);
+            i = j;
+        }
+    }
+}

core/decoders/raw.js

@@ -0,0 +1,66 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+export default class RawDecoder {
+    constructor() {
+        this._lines = 0;
+    }
+
+    decodeRect(x, y, width, height, sock, display, depth) {
+        if ((width === 0) || (height === 0)) {
+            return true;
+        }
+
+        if (this._lines === 0) {
+            this._lines = height;
+        }
+
+        const pixelSize = depth == 8 ? 1 : 4;
+        const bytesPerLine = width * pixelSize;
+
+        if (sock.rQwait("RAW", bytesPerLine)) {
+            return false;
+        }
+
+        const curY = y + (height - this._lines);
+        const currHeight = Math.min(this._lines,
+                                    Math.floor(sock.rQlen / bytesPerLine));
+        const pixels = width * currHeight;
+
+        let data = sock.rQ;
+        let index = sock.rQi;
+
+        // Convert data if needed
+        if (depth == 8) {
+            const newdata = new Uint8Array(pixels * 4);
+            for (let i = 0; i < pixels; i++) {
+                newdata[i * 4 + 0] = ((data[index + i] >> 0) & 0x3) * 255 / 3;
+                newdata[i * 4 + 1] = ((data[index + i] >> 2) & 0x3) * 255 / 3;
+                newdata[i * 4 + 2] = ((data[index + i] >> 4) & 0x3) * 255 / 3;
+                newdata[i * 4 + 3] = 255;
+            }
+            data = newdata;
+            index = 0;
+        }
+
+        // Max sure the image is fully opaque
+        for (let i = 0; i < pixels; i++) {
+            data[index + i * 4 + 3] = 255;
+        }
+
+        display.blitImage(x, curY, width, currHeight, data, index);
+        sock.rQskipBytes(currHeight * bytesPerLine);
+        this._lines -= currHeight;
+        if (this._lines > 0) {
+            return false;
+        }
+
+        return true;
+    }
+}

core/decoders/rre.js

@@ -0,0 +1,44 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+export default class RREDecoder {
+    constructor() {
+        this._subrects = 0;
+    }
+
+    decodeRect(x, y, width, height, sock, display, depth) {
+        if (this._subrects === 0) {
+            if (sock.rQwait("RRE", 4 + 4)) {
+                return false;
+            }
+
+            this._subrects = sock.rQshift32();
+
+            let color = sock.rQshiftBytes(4);  // Background
+            display.fillRect(x, y, width, height, color);
+        }
+
+        while (this._subrects > 0) {
+            if (sock.rQwait("RRE", 4 + 8)) {
+                return false;
+            }
+
+            let color = sock.rQshiftBytes(4);
+            let sx = sock.rQshift16();
+            let sy = sock.rQshift16();
+            let swidth = sock.rQshift16();
+            let sheight = sock.rQshift16();
+            display.fillRect(x + sx, y + sy, swidth, sheight, color);
+
+            this._subrects--;
+        }
+
+        return true;
+    }
+}

core/decoders/tight.js

@@ -0,0 +1,331 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * (c) 2012 Michael Tinglof, Joe Balaz, Les Piech (Mercuri.ca)
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+import * as Log from '../util/logging.js';
+import Inflator from "../inflator.js";
+
+export default class TightDecoder {
+    constructor() {
+        this._ctl = null;
+        this._filter = null;
+        this._numColors = 0;
+        this._palette = new Uint8Array(1024);  // 256 * 4 (max palette size * max bytes-per-pixel)
+        this._len = 0;
+
+        this._zlibs = [];
+        for (let i = 0; i < 4; i++) {
+            this._zlibs[i] = new Inflator();
+        }
+    }
+
+    decodeRect(x, y, width, height, sock, display, depth) {
+        if (this._ctl === null) {
+            if (sock.rQwait("TIGHT compression-control", 1)) {
+                return false;
+            }
+
+            this._ctl = sock.rQshift8();
+
+            // Reset streams if the server requests it
+            for (let i = 0; i < 4; i++) {
+                if ((this._ctl >> i) & 1) {
+                    this._zlibs[i].reset();
+                    Log.Info("Reset zlib stream " + i);
+                }
+            }
+
+            // Figure out filter
+            this._ctl = this._ctl >> 4;
+        }
+
+        let ret;
+
+        if (this._ctl === 0x08) {
+            ret = this._fillRect(x, y, width, height,
+                                 sock, display, depth);
+        } else if (this._ctl === 0x09) {
+            ret = this._jpegRect(x, y, width, height,
+                                 sock, display, depth);
+        } else if (this._ctl === 0x0A) {
+            ret = this._pngRect(x, y, width, height,
+                                sock, display, depth);
+        } else if ((this._ctl & 0x08) == 0) {
+            ret = this._basicRect(this._ctl, x, y, width, height,
+                                  sock, display, depth);
+        } else {
+            throw new Error("Illegal tight compression received (ctl: " +
+                                   this._ctl + ")");
+        }
+
+        if (ret) {
+            this._ctl = null;
+        }
+
+        return ret;
+    }
+
+    _fillRect(x, y, width, height, sock, display, depth) {
+        if (sock.rQwait("TIGHT", 3)) {
+            return false;
+        }
+
+        const rQi = sock.rQi;
+        const rQ = sock.rQ;
+
+        display.fillRect(x, y, width, height,
+                         [rQ[rQi], rQ[rQi + 1], rQ[rQi + 2]], false);
+        sock.rQskipBytes(3);
+
+        return true;
+    }
+
+    _jpegRect(x, y, width, height, sock, display, depth) {
+        let data = this._readData(sock);
+        if (data === null) {
+            return false;
+        }
+
+        display.imageRect(x, y, width, height, "image/jpeg", data);
+
+        return true;
+    }
+
+    _pngRect(x, y, width, height, sock, display, depth) {
+        throw new Error("PNG received in standard Tight rect");
+    }
+
+    _basicRect(ctl, x, y, width, height, sock, display, depth) {
+        if (this._filter === null) {
+            if (ctl & 0x4) {
+                if (sock.rQwait("TIGHT", 1)) {
+                    return false;
+                }
+
+                this._filter = sock.rQshift8();
+            } else {
+                // Implicit CopyFilter
+                this._filter = 0;
+            }
+        }
+
+        let streamId = ctl & 0x3;
+
+        let ret;
+
+        switch (this._filter) {
+            case 0: // CopyFilter
+                ret = this._copyFilter(streamId, x, y, width, height,
+                                       sock, display, depth);
+                break;
+            case 1: // PaletteFilter
+                ret = this._paletteFilter(streamId, x, y, width, height,
+                                          sock, display, depth);
+                break;
+            case 2: // GradientFilter
+                ret = this._gradientFilter(streamId, x, y, width, height,
+                                           sock, display, depth);
+                break;
+            default:
+                throw new Error("Illegal tight filter received (ctl: " +
+                                       this._filter + ")");
+        }
+
+        if (ret) {
+            this._filter = null;
+        }
+
+        return ret;
+    }
+
+    _copyFilter(streamId, x, y, width, height, sock, display, depth) {
+        const uncompressedSize = width * height * 3;
+        let data;
+
+        if (uncompressedSize === 0) {
+            return true;
+        }
+
+        if (uncompressedSize < 12) {
+            if (sock.rQwait("TIGHT", uncompressedSize)) {
+                return false;
+            }
+
+            data = sock.rQshiftBytes(uncompressedSize);
+        } else {
+            data = this._readData(sock);
+            if (data === null) {
+                return false;
+            }
+
+            this._zlibs[streamId].setInput(data);
+            data = this._zlibs[streamId].inflate(uncompressedSize);
+            this._zlibs[streamId].setInput(null);
+        }
+
+        let rgbx = new Uint8Array(width * height * 4);
+        for (let i = 0, j = 0; i < width * height * 4; i += 4, j += 3) {
+            rgbx[i]     = data[j];
+            rgbx[i + 1] = data[j + 1];
+            rgbx[i + 2] = data[j + 2];
+            rgbx[i + 3] = 255;  // Alpha
+        }
+
+        display.blitImage(x, y, width, height, rgbx, 0, false);
+
+        return true;
+    }
+
+    _paletteFilter(streamId, x, y, width, height, sock, display, depth) {
+        if (this._numColors === 0) {
+            if (sock.rQwait("TIGHT palette", 1)) {
+                return false;
+            }
+
+            const numColors = sock.rQpeek8() + 1;
+            const paletteSize = numColors * 3;
+
+            if (sock.rQwait("TIGHT palette", 1 + paletteSize)) {
+                return false;
+            }
+
+            this._numColors = numColors;
+            sock.rQskipBytes(1);
+
+            sock.rQshiftTo(this._palette, paletteSize);
+        }
+
+        const bpp = (this._numColors <= 2) ? 1 : 8;
+        const rowSize = Math.floor((width * bpp + 7) / 8);
+        const uncompressedSize = rowSize * height;
+
+        let data;
+
+        if (uncompressedSize === 0) {
+            return true;
+        }
+
+        if (uncompressedSize < 12) {
+            if (sock.rQwait("TIGHT", uncompressedSize)) {
+                return false;
+            }
+
+            data = sock.rQshiftBytes(uncompressedSize);
+        } else {
+            data = this._readData(sock);
+            if (data === null) {
+                return false;
+            }
+
+            this._zlibs[streamId].setInput(data);
+            data = this._zlibs[streamId].inflate(uncompressedSize);
+            this._zlibs[streamId].setInput(null);
+        }
+
+        // Convert indexed (palette based) image data to RGB
+        if (this._numColors == 2) {
+            this._monoRect(x, y, width, height, data, this._palette, display);
+        } else {
+            this._paletteRect(x, y, width, height, data, this._palette, display);
+        }
+
+        this._numColors = 0;
+
+        return true;
+    }
+
+    _monoRect(x, y, width, height, data, palette, display) {
+        // Convert indexed (palette based) image data to RGB
+        // TODO: reduce number of calculations inside loop
+        const dest = this._getScratchBuffer(width * height * 4);
+        const w = Math.floor((width + 7) / 8);
+        const w1 = Math.floor(width / 8);
+
+        for (let y = 0; y < height; y++) {
+            let dp, sp, x;
+            for (x = 0; x < w1; x++) {
+                for (let b = 7; b >= 0; b--) {
+                    dp = (y * width + x * 8 + 7 - b) * 4;
+                    sp = (data[y * w + x] >> b & 1) * 3;
+                    dest[dp]     = palette[sp];
+                    dest[dp + 1] = palette[sp + 1];
+                    dest[dp + 2] = palette[sp + 2];
+                    dest[dp + 3] = 255;
+                }
+            }
+
+            for (let b = 7; b >= 8 - width % 8; b--) {
+                dp = (y * width + x * 8 + 7 - b) * 4;
+                sp = (data[y * w + x] >> b & 1) * 3;
+                dest[dp]     = palette[sp];
+                dest[dp + 1] = palette[sp + 1];
+                dest[dp + 2] = palette[sp + 2];
+                dest[dp + 3] = 255;
+            }
+        }
+
+        display.blitImage(x, y, width, height, dest, 0, false);
+    }
+
+    _paletteRect(x, y, width, height, data, palette, display) {
+        // Convert indexed (palette based) image data to RGB
+        const dest = this._getScratchBuffer(width * height * 4);
+        const total = width * height * 4;
+        for (let i = 0, j = 0; i < total; i += 4, j++) {
+            const sp = data[j] * 3;
+            dest[i]     = palette[sp];
+            dest[i + 1] = palette[sp + 1];
+            dest[i + 2] = palette[sp + 2];
+            dest[i + 3] = 255;
+        }
+
+        display.blitImage(x, y, width, height, dest, 0, false);
+    }
+
+    _gradientFilter(streamId, x, y, width, height, sock, display, depth) {
+        throw new Error("Gradient filter not implemented");
+    }
+
+    _readData(sock) {
+        if (this._len === 0) {
+            if (sock.rQwait("TIGHT", 3)) {
+                return null;
+            }
+
+            let byte;
+
+            byte = sock.rQshift8();
+            this._len = byte & 0x7f;
+            if (byte & 0x80) {
+                byte = sock.rQshift8();
+                this._len |= (byte & 0x7f) << 7;
+                if (byte & 0x80) {
+                    byte = sock.rQshift8();
+                    this._len |= byte << 14;
+                }
+            }
+        }
+
+        if (sock.rQwait("TIGHT", this._len)) {
+            return null;
+        }
+
+        let data = sock.rQshiftBytes(this._len);
+        this._len = 0;
+
+        return data;
+    }
+
+    _getScratchBuffer(size) {
+        if (!this._scratchBuffer || (this._scratchBuffer.length < size)) {
+            this._scratchBuffer = new Uint8Array(size);
+        }
+        return this._scratchBuffer;
+    }
+}

core/decoders/tightpng.js

@@ -0,0 +1,27 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+import TightDecoder from './tight.js';
+
+export default class TightPNGDecoder extends TightDecoder {
+    _pngRect(x, y, width, height, sock, display, depth) {
+        let data = this._readData(sock);
+        if (data === null) {
+            return false;
+        }
+
+        display.imageRect(x, y, width, height, "image/png", data);
+
+        return true;
+    }
+
+    _basicRect(ctl, x, y, width, height, sock, display, depth) {
+        throw new Error("BasicCompression received in TightPNG rect");
+    }
+}

core/decoders/zrle.js

@@ -0,0 +1,185 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2021 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+import Inflate from "../inflator.js";
+
+const ZRLE_TILE_WIDTH = 64;
+const ZRLE_TILE_HEIGHT = 64;
+
+export default class ZRLEDecoder {
+    constructor() {
+        this._length = 0;
+        this._inflator = new Inflate();
+
+        this._pixelBuffer = new Uint8Array(ZRLE_TILE_WIDTH * ZRLE_TILE_HEIGHT * 4);
+        this._tileBuffer = new Uint8Array(ZRLE_TILE_WIDTH * ZRLE_TILE_HEIGHT * 4);
+    }
+
+    decodeRect(x, y, width, height, sock, display, depth) {
+        if (this._length === 0) {
+            if (sock.rQwait("ZLib data length", 4)) {
+                return false;
+            }
+            this._length = sock.rQshift32();
+        }
+        if (sock.rQwait("Zlib data", this._length)) {
+            return false;
+        }
+
+        const data = sock.rQshiftBytes(this._length);
+
+        this._inflator.setInput(data);
+
+        for (let ty = y; ty < y + height; ty += ZRLE_TILE_HEIGHT) {
+            let th = Math.min(ZRLE_TILE_HEIGHT, y + height - ty);
+
+            for (let tx = x; tx < x + width; tx += ZRLE_TILE_WIDTH) {
+                let tw = Math.min(ZRLE_TILE_WIDTH, x + width - tx);
+
+                const tileSize = tw * th;
+                const subencoding = this._inflator.inflate(1)[0];
+                if (subencoding === 0) {
+                    // raw data
+                    const data = this._readPixels(tileSize);
+                    display.blitImage(tx, ty, tw, th, data, 0, false);
+                } else if (subencoding === 1) {
+                    // solid
+                    const background = this._readPixels(1);
+                    display.fillRect(tx, ty, tw, th, [background[0], background[1], background[2]]);
+                } else if (subencoding >= 2 && subencoding <= 16) {
+                    const data = this._decodePaletteTile(subencoding, tileSize, tw, th);
+                    display.blitImage(tx, ty, tw, th, data, 0, false);
+                } else if (subencoding === 128) {
+                    const data = this._decodeRLETile(tileSize);
+                    display.blitImage(tx, ty, tw, th, data, 0, false);
+                } else if (subencoding >= 130 && subencoding <= 255) {
+                    const data = this._decodeRLEPaletteTile(subencoding - 128, tileSize);
+                    display.blitImage(tx, ty, tw, th, data, 0, false);
+                } else {
+                    throw new Error('Unknown subencoding: ' + subencoding);
+                }
+            }
+        }
+        this._length = 0;
+        return true;
+    }
+
+    _getBitsPerPixelInPalette(paletteSize) {
+        if (paletteSize <= 2) {
+            return 1;
+        } else if (paletteSize <= 4) {
+            return 2;
+        } else if (paletteSize <= 16) {
+            return 4;
+        }
+    }
+
+    _readPixels(pixels) {
+        let data = this._pixelBuffer;
+        const buffer = this._inflator.inflate(3*pixels);
+        for (let i = 0, j = 0; i < pixels*4; i += 4, j += 3) {
+            data[i]     = buffer[j];
+            data[i + 1] = buffer[j + 1];
+            data[i + 2] = buffer[j + 2];
+            data[i + 3] = 255;  // Add the Alpha
+        }
+        return data;
+    }
+
+    _decodePaletteTile(paletteSize, tileSize, tilew, tileh) {
+        const data = this._tileBuffer;
+        const palette = this._readPixels(paletteSize);
+        const bitsPerPixel = this._getBitsPerPixelInPalette(paletteSize);
+        const mask = (1 << bitsPerPixel) - 1;
+
+        let offset = 0;
+        let encoded = this._inflator.inflate(1)[0];
+
+        for (let y=0; y<tileh; y++) {
+            let shift = 8-bitsPerPixel;
+            for (let x=0; x<tilew; x++) {
+                if (shift<0) {
+                    shift=8-bitsPerPixel;
+                    encoded = this._inflator.inflate(1)[0];
+                }
+                let indexInPalette = (encoded>>shift) & mask;
+
+                data[offset] = palette[indexInPalette * 4];
+                data[offset + 1] = palette[indexInPalette * 4 + 1];
+                data[offset + 2] = palette[indexInPalette * 4 + 2];
+                data[offset + 3] = palette[indexInPalette * 4 + 3];
+                offset += 4;
+                shift-=bitsPerPixel;
+            }
+            if (shift<8-bitsPerPixel && y<tileh-1) {
+                encoded =  this._inflator.inflate(1)[0];
+            }
+        }
+        return data;
+    }
+
+    _decodeRLETile(tileSize) {
+        const data = this._tileBuffer;
+        let i = 0;
+        while (i < tileSize) {
+            const pixel = this._readPixels(1);
+            const length = this._readRLELength();
+            for (let j = 0; j < length; j++) {
+                data[i * 4] = pixel[0];
+                data[i * 4 + 1] = pixel[1];
+                data[i * 4 + 2] = pixel[2];
+                data[i * 4 + 3] = pixel[3];
+                i++;
+            }
+        }
+        return data;
+    }
+
+    _decodeRLEPaletteTile(paletteSize, tileSize) {
+        const data = this._tileBuffer;
+
+        // palette
+        const palette = this._readPixels(paletteSize);
+
+        let offset = 0;
+        while (offset < tileSize) {
+            let indexInPalette = this._inflator.inflate(1)[0];
+            let length = 1;
+            if (indexInPalette >= 128) {
+                indexInPalette -= 128;
+                length = this._readRLELength();
+            }
+            if (indexInPalette > paletteSize) {
+                throw new Error('Too big index in palette: ' + indexInPalette + ', palette size: ' + paletteSize);
+            }
+            if (offset + length > tileSize) {
+                throw new Error('Too big rle length in palette mode: ' + length + ', allowed length is: ' + (tileSize - offset));
+            }
+
+            for (let j = 0; j < length; j++) {
+                data[offset * 4] = palette[indexInPalette * 4];
+                data[offset * 4 + 1] = palette[indexInPalette * 4 + 1];
+                data[offset * 4 + 2] = palette[indexInPalette * 4 + 2];
+                data[offset * 4 + 3] = palette[indexInPalette * 4 + 3];
+                offset++;
+            }
+        }
+        return data;
+    }
+
+    _readRLELength() {
+        let length = 0;
+        let current = 0;
+        do {
+            current = this._inflator.inflate(1)[0];
+            length += current;
+        } while (current === 255);
+        return length + 1;
+    }
+}

core/deflator.js

@@ -0,0 +1,85 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2020 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
+
+import { deflateInit, deflate } from "../vendor/pako/lib/zlib/deflate.js";
+import { Z_FULL_FLUSH } from "../vendor/pako/lib/zlib/deflate.js";
+import ZStream from "../vendor/pako/lib/zlib/zstream.js";
+
+export default class Deflator {
+    constructor() {
+        this.strm = new ZStream();
+        this.chunkSize = 1024 * 10 * 10;
+        this.outputBuffer = new Uint8Array(this.chunkSize);
+        this.windowBits = 5;
+
+        deflateInit(this.strm, this.windowBits);
+    }
+
+    deflate(inData) {
+        /* eslint-disable camelcase */
+        this.strm.input = inData;
+        this.strm.avail_in = this.strm.input.length;
+        this.strm.next_in = 0;
+        this.strm.output = this.outputBuffer;
+        this.strm.avail_out = this.chunkSize;
+        this.strm.next_out = 0;
+        /* eslint-enable camelcase */
+
+        let lastRet = deflate(this.strm, Z_FULL_FLUSH);
+        let outData = new Uint8Array(this.strm.output.buffer, 0, this.strm.next_out);
+
+        if (lastRet < 0) {
+            throw new Error("zlib deflate failed");
+        }
+
+        if (this.strm.avail_in > 0) {
+            // Read chunks until done
+
+            let chunks = [outData];
+            let totalLen = outData.length;
+            do {
+                /* eslint-disable camelcase */
+                this.strm.output = new Uint8Array(this.chunkSize);
+                this.strm.next_out = 0;
+                this.strm.avail_out = this.chunkSize;
+                /* eslint-enable camelcase */
+
+                lastRet = deflate(this.strm, Z_FULL_FLUSH);
+
+                if (lastRet < 0) {
+                    throw new Error("zlib deflate failed");
+                }
+
+                let chunk = new Uint8Array(this.strm.output.buffer, 0, this.strm.next_out);
+                totalLen += chunk.length;
+                chunks.push(chunk);
+            } while (this.strm.avail_in > 0);
+
+            // Combine chunks into a single data
+
+            let newData = new Uint8Array(totalLen);
+            let offset = 0;
+
+            for (let i = 0; i < chunks.length; i++) {
+                newData.set(chunks[i], offset);
+                offset += chunks[i].length;
+            }
+
+            outData = newData;
+        }
+
+        /* eslint-disable camelcase */
+        this.strm.input = null;
+        this.strm.avail_in = 0;
+        this.strm.next_in = 0;
+        /* eslint-enable camelcase */
+
+        return outData;
+    }
+
+}

core/des.js

@@ -75,84 +75,83 @@
  * fine Java utilities: http://www.acme.com/java/
  */
 
-export default function DES(passwd) {
-    "use strict";
+/* eslint-disable comma-spacing */
 
-    // Tables, permutations, S-boxes, etc.
-    var PC2 = [13,16,10,23, 0, 4, 2,27,14, 5,20, 9,22,18,11, 3,
-               25, 7,15, 6,26,19,12, 1,40,51,30,36,46,54,29,39,
-               50,44,32,47,43,48,38,55,33,52,45,41,49,35,28,31 ],
-        totrot = [ 1, 2, 4, 6, 8,10,12,14,15,17,19,21,23,25,27,28],
-        z = 0x0, a,b,c,d,e,f, SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,
-        keys = [];
+// Tables, permutations, S-boxes, etc.
+const PC2 = [13,16,10,23, 0, 4, 2,27,14, 5,20, 9,22,18,11, 3,
+             25, 7,15, 6,26,19,12, 1,40,51,30,36,46,54,29,39,
+             50,44,32,47,43,48,38,55,33,52,45,41,49,35,28,31 ],
+      totrot = [ 1, 2, 4, 6, 8,10,12,14,15,17,19,21,23,25,27,28];
 
-    a=1<<16; b=1<<24; c=a|b; d=1<<2; e=1<<10; f=d|e;
-    SP1 = [c|e,z|z,a|z,c|f,c|d,a|f,z|d,a|z,z|e,c|e,c|f,z|e,b|f,c|d,b|z,z|d,
-           z|f,b|e,b|e,a|e,a|e,c|z,c|z,b|f,a|d,b|d,b|d,a|d,z|z,z|f,a|f,b|z,
-           a|z,c|f,z|d,c|z,c|e,b|z,b|z,z|e,c|d,a|z,a|e,b|d,z|e,z|d,b|f,a|f,
-           c|f,a|d,c|z,b|f,b|d,z|f,a|f,c|e,z|f,b|e,b|e,z|z,a|d,a|e,z|z,c|d];
-    a=1<<20; b=1<<31; c=a|b; d=1<<5; e=1<<15; f=d|e;
-    SP2 = [c|f,b|e,z|e,a|f,a|z,z|d,c|d,b|f,b|d,c|f,c|e,b|z,b|e,a|z,z|d,c|d,
-           a|e,a|d,b|f,z|z,b|z,z|e,a|f,c|z,a|d,b|d,z|z,a|e,z|f,c|e,c|z,z|f,
-           z|z,a|f,c|d,a|z,b|f,c|z,c|e,z|e,c|z,b|e,z|d,c|f,a|f,z|d,z|e,b|z,
-           z|f,c|e,a|z,b|d,a|d,b|f,b|d,a|d,a|e,z|z,b|e,z|f,b|z,c|d,c|f,a|e];
-    a=1<<17; b=1<<27; c=a|b; d=1<<3; e=1<<9; f=d|e;
-    SP3 = [z|f,c|e,z|z,c|d,b|e,z|z,a|f,b|e,a|d,b|d,b|d,a|z,c|f,a|d,c|z,z|f,
-           b|z,z|d,c|e,z|e,a|e,c|z,c|d,a|f,b|f,a|e,a|z,b|f,z|d,c|f,z|e,b|z,
-           c|e,b|z,a|d,z|f,a|z,c|e,b|e,z|z,z|e,a|d,c|f,b|e,b|d,z|e,z|z,c|d,
-           b|f,a|z,b|z,c|f,z|d,a|f,a|e,b|d,c|z,b|f,z|f,c|z,a|f,z|d,c|d,a|e];
-    a=1<<13; b=1<<23; c=a|b; d=1<<0; e=1<<7; f=d|e;
-    SP4 = [c|d,a|f,a|f,z|e,c|e,b|f,b|d,a|d,z|z,c|z,c|z,c|f,z|f,z|z,b|e,b|d,
-           z|d,a|z,b|z,c|d,z|e,b|z,a|d,a|e,b|f,z|d,a|e,b|e,a|z,c|e,c|f,z|f,
-           b|e,b|d,c|z,c|f,z|f,z|z,z|z,c|z,a|e,b|e,b|f,z|d,c|d,a|f,a|f,z|e,
-           c|f,z|f,z|d,a|z,b|d,a|d,c|e,b|f,a|d,a|e,b|z,c|d,z|e,b|z,a|z,c|e];
-    a=1<<25; b=1<<30; c=a|b; d=1<<8; e=1<<19; f=d|e;
-    SP5 = [z|d,a|f,a|e,c|d,z|e,z|d,b|z,a|e,b|f,z|e,a|d,b|f,c|d,c|e,z|f,b|z,
-           a|z,b|e,b|e,z|z,b|d,c|f,c|f,a|d,c|e,b|d,z|z,c|z,a|f,a|z,c|z,z|f,
-           z|e,c|d,z|d,a|z,b|z,a|e,c|d,b|f,a|d,b|z,c|e,a|f,b|f,z|d,a|z,c|e,
-           c|f,z|f,c|z,c|f,a|e,z|z,b|e,c|z,z|f,a|d,b|d,z|e,z|z,b|e,a|f,b|d];
-    a=1<<22; b=1<<29; c=a|b; d=1<<4; e=1<<14; f=d|e;
-    SP6 = [b|d,c|z,z|e,c|f,c|z,z|d,c|f,a|z,b|e,a|f,a|z,b|d,a|d,b|e,b|z,z|f,
-           z|z,a|d,b|f,z|e,a|e,b|f,z|d,c|d,c|d,z|z,a|f,c|e,z|f,a|e,c|e,b|z,
-           b|e,z|d,c|d,a|e,c|f,a|z,z|f,b|d,a|z,b|e,b|z,z|f,b|d,c|f,a|e,c|z,
-           a|f,c|e,z|z,c|d,z|d,z|e,c|z,a|f,z|e,a|d,b|f,z|z,c|e,b|z,a|d,b|f];
-    a=1<<21; b=1<<26; c=a|b; d=1<<1; e=1<<11; f=d|e;
-    SP7 = [a|z,c|d,b|f,z|z,z|e,b|f,a|f,c|e,c|f,a|z,z|z,b|d,z|d,b|z,c|d,z|f,
-           b|e,a|f,a|d,b|e,b|d,c|z,c|e,a|d,c|z,z|e,z|f,c|f,a|e,z|d,b|z,a|e,
-           b|z,a|e,a|z,b|f,b|f,c|d,c|d,z|d,a|d,b|z,b|e,a|z,c|e,z|f,a|f,c|e,
-           z|f,b|d,c|f,c|z,a|e,z|z,z|d,c|f,z|z,a|f,c|z,z|e,b|d,b|e,z|e,a|d];
-    a=1<<18; b=1<<28; c=a|b; d=1<<6; e=1<<12; f=d|e;
-    SP8 = [b|f,z|e,a|z,c|f,b|z,b|f,z|d,b|z,a|d,c|z,c|f,a|e,c|e,a|f,z|e,z|d,
-           c|z,b|d,b|e,z|f,a|e,a|d,c|d,c|e,z|f,z|z,z|z,c|d,b|d,b|e,a|f,a|z,
-           a|f,a|z,c|e,z|e,z|d,c|d,z|e,a|f,b|e,z|d,b|d,c|z,c|d,b|z,a|z,b|f,
-           z|z,c|f,a|d,b|d,c|z,b|e,b|f,z|z,c|f,a|e,a|e,z|f,z|f,a|d,b|z,c|e];
+const z = 0x0;
+let a,b,c,d,e,f;
+a=1<<16; b=1<<24; c=a|b; d=1<<2; e=1<<10; f=d|e;
+const SP1 = [c|e,z|z,a|z,c|f,c|d,a|f,z|d,a|z,z|e,c|e,c|f,z|e,b|f,c|d,b|z,z|d,
+             z|f,b|e,b|e,a|e,a|e,c|z,c|z,b|f,a|d,b|d,b|d,a|d,z|z,z|f,a|f,b|z,
+             a|z,c|f,z|d,c|z,c|e,b|z,b|z,z|e,c|d,a|z,a|e,b|d,z|e,z|d,b|f,a|f,
+             c|f,a|d,c|z,b|f,b|d,z|f,a|f,c|e,z|f,b|e,b|e,z|z,a|d,a|e,z|z,c|d];
+a=1<<20; b=1<<31; c=a|b; d=1<<5; e=1<<15; f=d|e;
+const SP2 = [c|f,b|e,z|e,a|f,a|z,z|d,c|d,b|f,b|d,c|f,c|e,b|z,b|e,a|z,z|d,c|d,
+             a|e,a|d,b|f,z|z,b|z,z|e,a|f,c|z,a|d,b|d,z|z,a|e,z|f,c|e,c|z,z|f,
+             z|z,a|f,c|d,a|z,b|f,c|z,c|e,z|e,c|z,b|e,z|d,c|f,a|f,z|d,z|e,b|z,
+             z|f,c|e,a|z,b|d,a|d,b|f,b|d,a|d,a|e,z|z,b|e,z|f,b|z,c|d,c|f,a|e];
+a=1<<17; b=1<<27; c=a|b; d=1<<3; e=1<<9; f=d|e;
+const SP3 = [z|f,c|e,z|z,c|d,b|e,z|z,a|f,b|e,a|d,b|d,b|d,a|z,c|f,a|d,c|z,z|f,
+             b|z,z|d,c|e,z|e,a|e,c|z,c|d,a|f,b|f,a|e,a|z,b|f,z|d,c|f,z|e,b|z,
+             c|e,b|z,a|d,z|f,a|z,c|e,b|e,z|z,z|e,a|d,c|f,b|e,b|d,z|e,z|z,c|d,
+             b|f,a|z,b|z,c|f,z|d,a|f,a|e,b|d,c|z,b|f,z|f,c|z,a|f,z|d,c|d,a|e];
+a=1<<13; b=1<<23; c=a|b; d=1<<0; e=1<<7; f=d|e;
+const SP4 = [c|d,a|f,a|f,z|e,c|e,b|f,b|d,a|d,z|z,c|z,c|z,c|f,z|f,z|z,b|e,b|d,
+             z|d,a|z,b|z,c|d,z|e,b|z,a|d,a|e,b|f,z|d,a|e,b|e,a|z,c|e,c|f,z|f,
+             b|e,b|d,c|z,c|f,z|f,z|z,z|z,c|z,a|e,b|e,b|f,z|d,c|d,a|f,a|f,z|e,
+             c|f,z|f,z|d,a|z,b|d,a|d,c|e,b|f,a|d,a|e,b|z,c|d,z|e,b|z,a|z,c|e];
+a=1<<25; b=1<<30; c=a|b; d=1<<8; e=1<<19; f=d|e;
+const SP5 = [z|d,a|f,a|e,c|d,z|e,z|d,b|z,a|e,b|f,z|e,a|d,b|f,c|d,c|e,z|f,b|z,
+             a|z,b|e,b|e,z|z,b|d,c|f,c|f,a|d,c|e,b|d,z|z,c|z,a|f,a|z,c|z,z|f,
+             z|e,c|d,z|d,a|z,b|z,a|e,c|d,b|f,a|d,b|z,c|e,a|f,b|f,z|d,a|z,c|e,
+             c|f,z|f,c|z,c|f,a|e,z|z,b|e,c|z,z|f,a|d,b|d,z|e,z|z,b|e,a|f,b|d];
+a=1<<22; b=1<<29; c=a|b; d=1<<4; e=1<<14; f=d|e;
+const SP6 = [b|d,c|z,z|e,c|f,c|z,z|d,c|f,a|z,b|e,a|f,a|z,b|d,a|d,b|e,b|z,z|f,
+             z|z,a|d,b|f,z|e,a|e,b|f,z|d,c|d,c|d,z|z,a|f,c|e,z|f,a|e,c|e,b|z,
+             b|e,z|d,c|d,a|e,c|f,a|z,z|f,b|d,a|z,b|e,b|z,z|f,b|d,c|f,a|e,c|z,
+             a|f,c|e,z|z,c|d,z|d,z|e,c|z,a|f,z|e,a|d,b|f,z|z,c|e,b|z,a|d,b|f];
+a=1<<21; b=1<<26; c=a|b; d=1<<1; e=1<<11; f=d|e;
+const SP7 = [a|z,c|d,b|f,z|z,z|e,b|f,a|f,c|e,c|f,a|z,z|z,b|d,z|d,b|z,c|d,z|f,
+             b|e,a|f,a|d,b|e,b|d,c|z,c|e,a|d,c|z,z|e,z|f,c|f,a|e,z|d,b|z,a|e,
+             b|z,a|e,a|z,b|f,b|f,c|d,c|d,z|d,a|d,b|z,b|e,a|z,c|e,z|f,a|f,c|e,
+             z|f,b|d,c|f,c|z,a|e,z|z,z|d,c|f,z|z,a|f,c|z,z|e,b|d,b|e,z|e,a|d];
+a=1<<18; b=1<<28; c=a|b; d=1<<6; e=1<<12; f=d|e;
+const SP8 = [b|f,z|e,a|z,c|f,b|z,b|f,z|d,b|z,a|d,c|z,c|f,a|e,c|e,a|f,z|e,z|d,
+             c|z,b|d,b|e,z|f,a|e,a|d,c|d,c|e,z|f,z|z,z|z,c|d,b|d,b|e,a|f,a|z,
+             a|f,a|z,c|e,z|e,z|d,c|d,z|e,a|f,b|e,z|d,b|d,c|z,c|d,b|z,a|z,b|f,
+             z|z,c|f,a|d,b|d,c|z,b|e,b|f,z|z,c|f,a|e,a|e,z|f,z|f,a|d,b|z,c|e];
 
-    // Set the key.
-    function setKeys(keyBlock) {
-        var i, j, l, m, n, o, pc1m = [], pcr = [], kn = [],
-            raw0, raw1, rawi, KnLi;
+/* eslint-enable comma-spacing */
 
-        for (j = 0, l = 56; j < 56; ++j, l -= 8) {
+export default class DES {
+    constructor(password) {
+        this.keys = [];
+
+        // Set the key.
+        const pc1m = [], pcr = [], kn = [];
+
+        for (let j = 0, l = 56; j < 56; ++j, l -= 8) {
             l += l < -5 ? 65 : l < -3 ? 31 : l < -1 ? 63 : l === 27 ? 35 : 0; // PC1
-            m = l & 0x7;
-            pc1m[j] = ((keyBlock[l >>> 3] & (1<<m)) !== 0) ? 1: 0;
+            const m = l & 0x7;
+            pc1m[j] = ((password[l >>> 3] & (1<<m)) !== 0) ? 1: 0;
         }
 
-        for (i = 0; i < 16; ++i) {
-            m = i << 1;
-            n = m + 1;
+        for (let i = 0; i < 16; ++i) {
+            const m = i << 1;
+            const n = m + 1;
             kn[m] = kn[n] = 0;
-            for (o = 28; o < 59; o += 28) {
-                for (j = o - 28; j < o; ++j) {
-                    l = j + totrot[i];
-                    if (l < o) {
-                        pcr[j] = pc1m[l];
-                    } else {
-                        pcr[j] = pc1m[l - 28];
-                    }
+            for (let o = 28; o < 59; o += 28) {
+                for (let j = o - 28; j < o; ++j) {
+                    const l = j + totrot[i];
+                    pcr[j] = l < o ? pc1m[l] : pc1m[l - 28];
                 }
             }
-            for (j = 0; j < 24; ++j) {
+            for (let j = 0; j < 24; ++j) {
                 if (pcr[PC2[j]] !== 0) {
                     kn[m] |= 1 << (23 - j);
                 }
@@ -163,26 +162,26 @@ export default function DES(passwd) {
         }
 
         // cookey
-        for (i = 0, rawi = 0, KnLi = 0; i < 16; ++i) {
-            raw0 = kn[rawi++];
-            raw1 = kn[rawi++];
-            keys[KnLi] = (raw0 & 0x00fc0000) << 6;
-            keys[KnLi] |= (raw0 & 0x00000fc0) << 10;
-            keys[KnLi] |= (raw1 & 0x00fc0000) >>> 10;
-            keys[KnLi] |= (raw1 & 0x00000fc0) >>> 6;
+        for (let i = 0, rawi = 0, KnLi = 0; i < 16; ++i) {
+            const raw0 = kn[rawi++];
+            const raw1 = kn[rawi++];
+            this.keys[KnLi] = (raw0 & 0x00fc0000) << 6;
+            this.keys[KnLi] |= (raw0 & 0x00000fc0) << 10;
+            this.keys[KnLi] |= (raw1 & 0x00fc0000) >>> 10;
+            this.keys[KnLi] |= (raw1 & 0x00000fc0) >>> 6;
             ++KnLi;
-            keys[KnLi] = (raw0 & 0x0003f000) << 12;
-            keys[KnLi] |= (raw0 & 0x0000003f) << 16;
-            keys[KnLi] |= (raw1 & 0x0003f000) >>> 4;
-            keys[KnLi] |= (raw1 & 0x0000003f);
+            this.keys[KnLi] = (raw0 & 0x0003f000) << 12;
+            this.keys[KnLi] |= (raw0 & 0x0000003f) << 16;
+            this.keys[KnLi] |= (raw1 & 0x0003f000) >>> 4;
+            this.keys[KnLi] |= (raw1 & 0x0000003f);
             ++KnLi;
         }
     }
 
     // Encrypt 8 bytes of text
-    function enc8(text) {
-        var i = 0, b = text.slice(), fval, keysi = 0,
-            l, r, x; // left, right, accumulator
+    enc8(text) {
+        const b = text.slice();
+        let i = 0, l, r, x; // left, right, accumulator
 
         // Squash 8 bytes to 2 ints
         l = b[i++]<<24 | b[i++]<<16 | b[i++]<<8 | b[i++];
@@ -206,26 +205,26 @@ export default function DES(passwd) {
         r ^= x;
         l = (l << 1) | ((l >>> 31) & 1);
 
-        for (i = 0; i < 8; ++i) {
+        for (let i = 0, keysi = 0; i < 8; ++i) {
             x = (r << 28) | (r >>> 4);
-            x ^= keys[keysi++];
-            fval =  SP7[x & 0x3f];
+            x ^= this.keys[keysi++];
+            let fval =  SP7[x & 0x3f];
             fval |= SP5[(x >>> 8) & 0x3f];
             fval |= SP3[(x >>> 16) & 0x3f];
             fval |= SP1[(x >>> 24) & 0x3f];
-            x = r ^ keys[keysi++];
+            x = r ^ this.keys[keysi++];
             fval |= SP8[x & 0x3f];
             fval |= SP6[(x >>> 8) & 0x3f];
             fval |= SP4[(x >>> 16) & 0x3f];
             fval |= SP2[(x >>> 24) & 0x3f];
             l ^= fval;
             x = (l << 28) | (l >>> 4);
-            x ^= keys[keysi++];
+            x ^= this.keys[keysi++];
             fval =  SP7[x & 0x3f];
             fval |= SP5[(x >>> 8) & 0x3f];
             fval |= SP3[(x >>> 16) & 0x3f];
             fval |= SP1[(x >>> 24) & 0x3f];
-            x = l ^ keys[keysi++];
+            x = l ^ this.keys[keysi++];
             fval |= SP8[x & 0x0000003f];
             fval |= SP6[(x >>> 8) & 0x3f];
             fval |= SP4[(x >>> 16) & 0x3f];
@@ -261,11 +260,7 @@ export default function DES(passwd) {
     }
 
     // Encrypt 16 bytes of text using passwd as key
-    function encrypt(t) {
-        return enc8(t.slice(0, 8)).concat(enc8(t.slice(8, 16)));
+    encrypt(t) {
+        return this.enc8(t.slice(0, 8)).concat(this.enc8(t.slice(8, 16)));
     }
-
-    setKeys(passwd);             // Setup keys
-    return {'encrypt': encrypt}; // Public interface
-
-}; // function DES
+}

core/display.js

@@ -1,7 +1,6 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
- * Copyright (C) 2015 Samuel Mannehed for Cendio AB
+ * Copyright (C) 2019 The noVNC Authors
  * Licensed under MPL 2.0 (see LICENSE.txt)
  *
  * See README.md for usage and integration instructions.
@@ -9,111 +8,93 @@
 
 import * as Log from './util/logging.js';
 import Base64 from "./base64.js";
+import { toSigned32bit } from './util/int.js';
 
-export default function Display(target) {
-    this._drawCtx = null;
-    this._c_forceCanvas = false;
+export default class Display {
+    constructor(target) {
+        this._drawCtx = null;
 
-    this._renderQ = [];  // queue drawing actions for in-oder rendering
-    this._flushing = false;
+        this._renderQ = [];  // queue drawing actions for in-oder rendering
+        this._flushing = false;
 
-    // the full frame buffer (logical canvas) size
-    this._fb_width = 0;
-    this._fb_height = 0;
+        // the full frame buffer (logical canvas) size
+        this._fbWidth = 0;
+        this._fbHeight = 0;
 
-    this._prevDrawStyle = "";
-    this._tile = null;
-    this._tile16x16 = null;
-    this._tile_x = 0;
-    this._tile_y = 0;
+        this._prevDrawStyle = "";
 
-    Log.Debug(">> Display.constructor");
+        Log.Debug(">> Display.constructor");
 
-    // The visible canvas
-    this._target = target;
+        // The visible canvas
+        this._target = target;
 
-    if (!this._target) {
-        throw new Error("Target must be set");
+        if (!this._target) {
+            throw new Error("Target must be set");
+        }
+
+        if (typeof this._target === 'string') {
+            throw new Error('target must be a DOM element');
+        }
+
+        if (!this._target.getContext) {
+            throw new Error("no getContext method");
+        }
+
+        this._targetCtx = this._target.getContext('2d');
+
+        // the visible canvas viewport (i.e. what actually gets seen)
+        this._viewportLoc = { 'x': 0, 'y': 0, 'w': this._target.width, 'h': this._target.height };
+
+        // The hidden canvas, where we do the actual rendering
+        this._backbuffer = document.createElement('canvas');
+        this._drawCtx = this._backbuffer.getContext('2d');
+
+        this._damageBounds = { left: 0, top: 0,
+                               right: this._backbuffer.width,
+                               bottom: this._backbuffer.height };
+
+        Log.Debug("User Agent: " + navigator.userAgent);
+
+        Log.Debug("<< Display.constructor");
+
+        // ===== PROPERTIES =====
+
+        this._scale = 1.0;
+        this._clipViewport = false;
+
+        // ===== EVENT HANDLERS =====
+
+        this.onflush = () => {}; // A flush request has finished
     }
 
-    if (typeof this._target === 'string') {
-        throw new Error('target must be a DOM element');
-    }
-
-    if (!this._target.getContext) {
-        throw new Error("no getContext method");
-    }
-
-    this._targetCtx = this._target.getContext('2d');
-
-    // the visible canvas viewport (i.e. what actually gets seen)
-    this._viewportLoc = { 'x': 0, 'y': 0, 'w': this._target.width, 'h': this._target.height };
-
-    // The hidden canvas, where we do the actual rendering
-    this._backbuffer = document.createElement('canvas');
-    this._drawCtx = this._backbuffer.getContext('2d');
-
-    this._damageBounds = { left:0, top:0,
-                           right: this._backbuffer.width,
-                           bottom: this._backbuffer.height };
-
-    Log.Debug("User Agent: " + navigator.userAgent);
-
-    this.clear();
-
-    // Check canvas features
-    if (!('createImageData' in this._drawCtx)) {
-        throw new Error("Canvas does not support createImageData");
-    }
-
-    this._tile16x16 = this._drawCtx.createImageData(16, 16);
-    Log.Debug("<< Display.constructor");
-};
-
-var SUPPORTS_IMAGEDATA_CONSTRUCTOR = false;
-try {
-    new ImageData(new Uint8ClampedArray(4), 1, 1);
-    SUPPORTS_IMAGEDATA_CONSTRUCTOR = true;
-} catch (ex) {
-    // ignore failure
-}
-
-Display.prototype = {
     // ===== PROPERTIES =====
 
-    _scale: 1.0,
-    get scale() { return this._scale; },
+    get scale() { return this._scale; }
     set scale(scale) {
         this._rescale(scale);
-    },
+    }
 
-    _clipViewport: false,
-    get clipViewport() { return this._clipViewport; },
+    get clipViewport() { return this._clipViewport; }
     set clipViewport(viewport) {
         this._clipViewport = viewport;
         // May need to readjust the viewport dimensions
-        var vp = this._viewportLoc;
+        const vp = this._viewportLoc;
         this.viewportChangeSize(vp.w, vp.h);
         this.viewportChangePos(0, 0);
-    },
+    }
 
     get width() {
-        return this._fb_width;
-    },
+        return this._fbWidth;
+    }
+
     get height() {
-        return this._fb_height;
-    },
-
-    logo: null,
-
-    // ===== EVENT HANDLERS =====
-
-    onflush: function () {},        // A flush request has finished
+        return this._fbHeight;
+    }
 
     // ===== PUBLIC METHODS =====
 
-    viewportChangePos: function (deltaX, deltaY) {
-        var vp = this._viewportLoc;
+    viewportChangePos(deltaX, deltaY) {
+        const vp = this._viewportLoc;
         deltaX = Math.floor(deltaX);
         deltaY = Math.floor(deltaY);
 
@@ -122,23 +103,23 @@ Display.prototype = {
             deltaY = -vp.h;
         }
 
-        var vx2 = vp.x + vp.w - 1;
-        var vy2 = vp.y + vp.h - 1;
+        const vx2 = vp.x + vp.w - 1;
+        const vy2 = vp.y + vp.h - 1;
 
         // Position change
 
         if (deltaX < 0 && vp.x + deltaX < 0) {
             deltaX = -vp.x;
         }
-        if (vx2 + deltaX >= this._fb_width) {
-            deltaX -= vx2 + deltaX - this._fb_width + 1;
+        if (vx2 + deltaX >= this._fbWidth) {
+            deltaX -= vx2 + deltaX - this._fbWidth + 1;
         }
 
         if (vp.y + deltaY < 0) {
             deltaY = -vp.y;
         }
-        if (vy2 + deltaY >= this._fb_height) {
-            deltaY -= (vy2 + deltaY - this._fb_height + 1);
+        if (vy2 + deltaY >= this._fbHeight) {
+            deltaY -= (vy2 + deltaY - this._fbHeight + 1);
         }
 
         if (deltaX === 0 && deltaY === 0) {
@@ -152,32 +133,35 @@ Display.prototype = {
         this._damage(vp.x, vp.y, vp.w, vp.h);
 
         this.flip();
-    },
+    }
 
-    viewportChangeSize: function(width, height) {
+    viewportChangeSize(width, height) {
 
         if (!this._clipViewport ||
             typeof(width) === "undefined" ||
             typeof(height) === "undefined") {
 
             Log.Debug("Setting viewport to full display region");
-            width = this._fb_width;
-            height = this._fb_height;
+            width = this._fbWidth;
+            height = this._fbHeight;
         }
 
-        if (width > this._fb_width) {
-            width = this._fb_width;
+        width = Math.floor(width);
+        height = Math.floor(height);
+
+        if (width > this._fbWidth) {
+            width = this._fbWidth;
         }
-        if (height > this._fb_height) {
-            height = this._fb_height;
+        if (height > this._fbHeight) {
+            height = this._fbHeight;
         }
 
-        var vp = this._viewportLoc;
+        const vp = this._viewportLoc;
         if (vp.w !== width || vp.h !== height) {
             vp.w = width;
             vp.h = height;
 
-            var canvas = this._target;
+            const canvas = this._target;
             canvas.width = width;
             canvas.height = height;
 
@@ -190,27 +174,33 @@ Display.prototype = {
             // Update the visible size of the target canvas
             this._rescale(this._scale);
         }
-    },
+    }
 
-    absX: function (x) {
-        return x / this._scale + this._viewportLoc.x;
-    },
+    absX(x) {
+        if (this._scale === 0) {
+            return 0;
+        }
+        return toSigned32bit(x / this._scale + this._viewportLoc.x);
+    }
 
-    absY: function (y) {
-        return y / this._scale + this._viewportLoc.y;
-    },
+    absY(y) {
+        if (this._scale === 0) {
+            return 0;
+        }
+        return toSigned32bit(y / this._scale + this._viewportLoc.y);
+    }
 
-    resize: function (width, height) {
+    resize(width, height) {
         this._prevDrawStyle = "";
 
-        this._fb_width = width;
-        this._fb_height = height;
+        this._fbWidth = width;
+        this._fbHeight = height;
 
-        var canvas = this._backbuffer;
+        const canvas = this._backbuffer;
         if (canvas.width !== width || canvas.height !== height) {
 
             // We have to save the canvas data since changing the size will clear it
-            var saveImg = null;
+            let saveImg = null;
             if (canvas.width > 0 && canvas.height > 0) {
                 saveImg = this._drawCtx.getImageData(0, 0, canvas.width, canvas.height);
             }
@@ -229,13 +219,25 @@ Display.prototype = {
 
         // Readjust the viewport as it may be incorrectly sized
         // and positioned
-        var vp = this._viewportLoc;
+        const vp = this._viewportLoc;
         this.viewportChangeSize(vp.w, vp.h);
         this.viewportChangePos(0, 0);
-    },
+    }
+
+    getImageData() {
+        return this._drawCtx.getImageData(0, 0, this.width, this.height);
+    }
+
+    toDataURL(type, encoderOptions) {
+        return this._backbuffer.toDataURL(type, encoderOptions);
+    }
+
+    toBlob(callback, type, quality) {
+        return this._backbuffer.toBlob(callback, type, quality);
+    }
 
     // Track what parts of the visible canvas that need updating
-    _damage: function(x, y, w, h) {
+    _damage(x, y, w, h) {
         if (x < this._damageBounds.left) {
             this._damageBounds.left = x;
         }
@@ -248,25 +250,23 @@ Display.prototype = {
         if ((y + h) > this._damageBounds.bottom) {
             this._damageBounds.bottom = y + h;
         }
-    },
+    }
 
     // Update the visible canvas with the contents of the
     // rendering canvas
-    flip: function(from_queue) {
-        if (this._renderQ.length !== 0 && !from_queue) {
-            this._renderQ_push({
+    flip(fromQueue) {
+        if (this._renderQ.length !== 0 && !fromQueue) {
+            this._renderQPush({
                 'type': 'flip'
             });
         } else {
-            var x, y, vx, vy, w, h;
+            let x = this._damageBounds.left;
+            let y = this._damageBounds.top;
+            let w = this._damageBounds.right - x;
+            let h = this._damageBounds.bottom - y;
 
-            x = this._damageBounds.left;
-            y = this._damageBounds.top;
-            w = this._damageBounds.right - x;
-            h = this._damageBounds.bottom - y;
-
-            vx = x - this._viewportLoc.x;
-            vy = y - this._viewportLoc.y;
+            let vx = x - this._viewportLoc.x;
+            let vy = y - this._viewportLoc.y;
 
             if (vx < 0) {
                 w += vx;
@@ -298,34 +298,23 @@ Display.prototype = {
             this._damageBounds.left = this._damageBounds.top = 65535;
             this._damageBounds.right = this._damageBounds.bottom = 0;
         }
-    },
+    }
 
-    clear: function () {
-        if (this._logo) {
-            this.resize(this._logo.width, this._logo.height);
-            this.imageRect(0, 0, this._logo.type, this._logo.data);
-        } else {
-            this.resize(240, 20);
-            this._drawCtx.clearRect(0, 0, this._fb_width, this._fb_height);
-        }
-        this.flip();
-    },
-
-    pending: function() {
+    pending() {
         return this._renderQ.length > 0;
-    },
+    }
 
-    flush: function() {
+    flush() {
         if (this._renderQ.length === 0) {
             this.onflush();
         } else {
             this._flushing = true;
         }
-    },
+    }
 
-    fillRect: function (x, y, width, height, color, from_queue) {
-        if (this._renderQ.length !== 0 && !from_queue) {
-            this._renderQ_push({
+    fillRect(x, y, width, height, color, fromQueue) {
+        if (this._renderQ.length !== 0 && !fromQueue) {
+            this._renderQPush({
                 'type': 'fill',
                 'x': x,
                 'y': y,
@@ -338,16 +327,16 @@ Display.prototype = {
             this._drawCtx.fillRect(x, y, width, height);
             this._damage(x, y, width, height);
         }
-    },
+    }
 
-    copyImage: function (old_x, old_y, new_x, new_y, w, h, from_queue) {
-        if (this._renderQ.length !== 0 && !from_queue) {
-            this._renderQ_push({
+    copyImage(oldX, oldY, newX, newY, w, h, fromQueue) {
+        if (this._renderQ.length !== 0 && !fromQueue) {
+            this._renderQPush({
                 'type': 'copy',
-                'old_x': old_x,
-                'old_y': old_y,
-                'x': new_x,
-                'y': new_y,
+                'oldX': oldX,
+                'oldY': oldY,
+                'x': newX,
+                'y': newY,
                 'width': w,
                 'height': h,
             });
@@ -365,259 +354,138 @@ Display.prototype = {
             this._drawCtx.imageSmoothingEnabled = false;
 
             this._drawCtx.drawImage(this._backbuffer,
-                                    old_x, old_y, w, h,
-                                    new_x, new_y, w, h);
-            this._damage(new_x, new_y, w, h);
+                                    oldX, oldY, w, h,
+                                    newX, newY, w, h);
+            this._damage(newX, newY, w, h);
         }
-    },
+    }
 
-    imageRect: function(x, y, mime, arr) {
-        var img = new Image();
+    imageRect(x, y, width, height, mime, arr) {
+        /* The internal logic cannot handle empty images, so bail early */
+        if ((width === 0) || (height === 0)) {
+            return;
+        }
+
+        const img = new Image();
         img.src = "data: " + mime + ";base64," + Base64.encode(arr);
-        this._renderQ_push({
+
+        this._renderQPush({
             'type': 'img',
             'img': img,
             'x': x,
-            'y': y
+            'y': y,
+            'width': width,
+            'height': height
         });
-    },
+    }
 
-    // start updating a tile
-    startTile: function (x, y, width, height, color) {
-        this._tile_x = x;
-        this._tile_y = y;
-        if (width === 16 && height === 16) {
-            this._tile = this._tile16x16;
-        } else {
-            this._tile = this._drawCtx.createImageData(width, height);
-        }
-
-        var red = color[2];
-        var green = color[1];
-        var blue = color[0];
-
-        var data = this._tile.data;
-        for (var i = 0; i < width * height * 4; i += 4) {
-            data[i] = red;
-            data[i + 1] = green;
-            data[i + 2] = blue;
-            data[i + 3] = 255;
-        }
-    },
-
-    // update sub-rectangle of the current tile
-    subTile: function (x, y, w, h, color) {
-        var red = color[2];
-        var green = color[1];
-        var blue = color[0];
-        var xend = x + w;
-        var yend = y + h;
-
-        var data = this._tile.data;
-        var width = this._tile.width;
-        for (var j = y; j < yend; j++) {
-            for (var i = x; i < xend; i++) {
-                var p = (i + (j * width)) * 4;
-                data[p] = red;
-                data[p + 1] = green;
-                data[p + 2] = blue;
-                data[p + 3] = 255;
-            }
-        }
-    },
-
-    // draw the current tile to the screen
-    finishTile: function () {
-        this._drawCtx.putImageData(this._tile, this._tile_x, this._tile_y);
-        this._damage(this._tile_x, this._tile_y,
-                     this._tile.width, this._tile.height);
-    },
-
-    blitImage: function (x, y, width, height, arr, offset, from_queue) {
-        if (this._renderQ.length !== 0 && !from_queue) {
+    blitImage(x, y, width, height, arr, offset, fromQueue) {
+        if (this._renderQ.length !== 0 && !fromQueue) {
             // NB(directxman12): it's technically more performant here to use preallocated arrays,
             // but it's a lot of extra work for not a lot of payoff -- if we're using the render queue,
             // this probably isn't getting called *nearly* as much
-            var new_arr = new Uint8Array(width * height * 4);
-            new_arr.set(new Uint8Array(arr.buffer, 0, new_arr.length));
-            this._renderQ_push({
+            const newArr = new Uint8Array(width * height * 4);
+            newArr.set(new Uint8Array(arr.buffer, 0, newArr.length));
+            this._renderQPush({
                 'type': 'blit',
-                'data': new_arr,
+                'data': newArr,
                 'x': x,
                 'y': y,
                 'width': width,
                 'height': height,
             });
         } else {
-            this._bgrxImageData(x, y, width, height, arr, offset);
+            // NB(directxman12): arr must be an Type Array view
+            let data = new Uint8ClampedArray(arr.buffer,
+                                             arr.byteOffset + offset,
+                                             width * height * 4);
+            let img = new ImageData(data, width, height);
+            this._drawCtx.putImageData(img, x, y);
+            this._damage(x, y, width, height);
         }
-    },
+    }
 
-    blitRgbImage: function (x, y , width, height, arr, offset, from_queue) {
-        if (this._renderQ.length !== 0 && !from_queue) {
-            // NB(directxman12): it's technically more performant here to use preallocated arrays,
-            // but it's a lot of extra work for not a lot of payoff -- if we're using the render queue,
-            // this probably isn't getting called *nearly* as much
-            var new_arr = new Uint8Array(width * height * 3);
-            new_arr.set(new Uint8Array(arr.buffer, 0, new_arr.length));
-            this._renderQ_push({
-                'type': 'blitRgb',
-                'data': new_arr,
-                'x': x,
-                'y': y,
-                'width': width,
-                'height': height,
-            });
-        } else {
-            this._rgbImageData(x, y, width, height, arr, offset);
-        }
-    },
-
-    blitRgbxImage: function (x, y, width, height, arr, offset, from_queue) {
-        if (this._renderQ.length !== 0 && !from_queue) {
-            // NB(directxman12): it's technically more performant here to use preallocated arrays,
-            // but it's a lot of extra work for not a lot of payoff -- if we're using the render queue,
-            // this probably isn't getting called *nearly* as much
-            var new_arr = new Uint8Array(width * height * 4);
-            new_arr.set(new Uint8Array(arr.buffer, 0, new_arr.length));
-            this._renderQ_push({
-                'type': 'blitRgbx',
-                'data': new_arr,
-                'x': x,
-                'y': y,
-                'width': width,
-                'height': height,
-            });
-        } else {
-            this._rgbxImageData(x, y, width, height, arr, offset);
-        }
-    },
-
-    drawImage: function (img, x, y) {
+    drawImage(img, x, y) {
         this._drawCtx.drawImage(img, x, y);
         this._damage(x, y, img.width, img.height);
-    },
+    }
 
-    changeCursor: function (pixels, mask, hotx, hoty, w, h) {
-        Display.changeCursor(this._target, pixels, mask, hotx, hoty, w, h);
-    },
+    autoscale(containerWidth, containerHeight) {
+        let scaleRatio;
 
-    defaultCursor: function () {
-        this._target.style.cursor = "default";
-    },
+        if (containerWidth === 0 || containerHeight === 0) {
+            scaleRatio = 0;
 
-    disableLocalCursor: function () {
-        this._target.style.cursor = "none";
-    },
-
-    autoscale: function (containerWidth, containerHeight) {
-        var vp = this._viewportLoc;
-        var targetAspectRatio = containerWidth / containerHeight;
-        var fbAspectRatio = vp.w / vp.h;
-
-        var scaleRatio;
-        if (fbAspectRatio >= targetAspectRatio) {
-            scaleRatio = containerWidth / vp.w;
         } else {
-            scaleRatio = containerHeight / vp.h;
+
+            const vp = this._viewportLoc;
+            const targetAspectRatio = containerWidth / containerHeight;
+            const fbAspectRatio = vp.w / vp.h;
+
+            if (fbAspectRatio >= targetAspectRatio) {
+                scaleRatio = containerWidth / vp.w;
+            } else {
+                scaleRatio = containerHeight / vp.h;
+            }
         }
 
         this._rescale(scaleRatio);
-    },
+    }
 
     // ===== PRIVATE METHODS =====
 
-    _rescale: function (factor) {
+    _rescale(factor) {
         this._scale = factor;
-        var vp = this._viewportLoc;
+        const vp = this._viewportLoc;
 
         // NB(directxman12): If you set the width directly, or set the
         //                   style width to a number, the canvas is cleared.
         //                   However, if you set the style width to a string
         //                   ('NNNpx'), the canvas is scaled without clearing.
-        var width = Math.round(factor * vp.w) + 'px';
-        var height = Math.round(factor * vp.h) + 'px';
+        const width = factor * vp.w + 'px';
+        const height = factor * vp.h + 'px';
 
         if ((this._target.style.width !== width) ||
             (this._target.style.height !== height)) {
             this._target.style.width = width;
             this._target.style.height = height;
         }
-    },
+    }
 
-    _setFillColor: function (color) {
-        var newStyle = 'rgb(' + color[2] + ',' + color[1] + ',' + color[0] + ')';
+    _setFillColor(color) {
+        const newStyle = 'rgb(' + color[0] + ',' + color[1] + ',' + color[2] + ')';
         if (newStyle !== this._prevDrawStyle) {
             this._drawCtx.fillStyle = newStyle;
             this._prevDrawStyle = newStyle;
         }
-    },
+    }
 
-    _rgbImageData: function (x, y, width, height, arr, offset) {
-        var img = this._drawCtx.createImageData(width, height);
-        var data = img.data;
-        for (var i = 0, j = offset; i < width * height * 4; i += 4, j += 3) {
-            data[i]     = arr[j];
-            data[i + 1] = arr[j + 1];
-            data[i + 2] = arr[j + 2];
-            data[i + 3] = 255;  // Alpha
-        }
-        this._drawCtx.putImageData(img, x, y);
-        this._damage(x, y, img.width, img.height);
-    },
-
-    _bgrxImageData: function (x, y, width, height, arr, offset) {
-        var img = this._drawCtx.createImageData(width, height);
-        var data = img.data;
-        for (var i = 0, j = offset; i < width * height * 4; i += 4, j += 4) {
-            data[i]     = arr[j + 2];
-            data[i + 1] = arr[j + 1];
-            data[i + 2] = arr[j];
-            data[i + 3] = 255;  // Alpha
-        }
-        this._drawCtx.putImageData(img, x, y);
-        this._damage(x, y, img.width, img.height);
-    },
-
-    _rgbxImageData: function (x, y, width, height, arr, offset) {
-        // NB(directxman12): arr must be an Type Array view
-        var img;
-        if (SUPPORTS_IMAGEDATA_CONSTRUCTOR) {
-            img = new ImageData(new Uint8ClampedArray(arr.buffer, arr.byteOffset, width * height * 4), width, height);
-        } else {
-            img = this._drawCtx.createImageData(width, height);
-            img.data.set(new Uint8ClampedArray(arr.buffer, arr.byteOffset, width * height * 4));
-        }
-        this._drawCtx.putImageData(img, x, y);
-        this._damage(x, y, img.width, img.height);
-    },
-
-    _renderQ_push: function (action) {
+    _renderQPush(action) {
         this._renderQ.push(action);
         if (this._renderQ.length === 1) {
             // If this can be rendered immediately it will be, otherwise
             // the scanner will wait for the relevant event
-            this._scan_renderQ();
+            this._scanRenderQ();
         }
-    },
+    }
 
-    _resume_renderQ: function() {
+    _resumeRenderQ() {
         // "this" is the object that is ready, not the
         // display object
-        this.removeEventListener('load', this._noVNC_display._resume_renderQ);
-        this._noVNC_display._scan_renderQ();
-    },
+        this.removeEventListener('load', this._noVNCDisplay._resumeRenderQ);
+        this._noVNCDisplay._scanRenderQ();
+    }
 
-    _scan_renderQ: function () {
-        var ready = true;
+    _scanRenderQ() {
+        let ready = true;
         while (ready && this._renderQ.length > 0) {
-            var a = this._renderQ[0];
+            const a = this._renderQ[0];
             switch (a.type) {
                 case 'flip':
                     this.flip(true);
                     break;
                 case 'copy':
-                    this.copyImage(a.old_x, a.old_y, a.x, a.y, a.width, a.height, true);
+                    this.copyImage(a.oldX, a.oldY, a.x, a.y, a.width, a.height, true);
                     break;
                 case 'fill':
                     this.fillRect(a.x, a.y, a.width, a.height, a.color, true);
@@ -625,18 +493,18 @@ Display.prototype = {
                 case 'blit':
                     this.blitImage(a.x, a.y, a.width, a.height, a.data, 0, true);
                     break;
-                case 'blitRgb':
-                    this.blitRgbImage(a.x, a.y, a.width, a.height, a.data, 0, true);
-                    break;
-                case 'blitRgbx':
-                    this.blitRgbxImage(a.x, a.y, a.width, a.height, a.data, 0, true);
-                    break;
                 case 'img':
                     if (a.img.complete) {
+                        if (a.img.width !== a.width || a.img.height !== a.height) {
+                            Log.Error("Decoded image has incorrect dimensions. Got " +
+                                      a.img.width + "x" + a.img.height + ". Expected " +
+                                      a.width + "x" + a.height + ".");
+                            return;
+                        }
                         this.drawImage(a.img, a.x, a.y);
                     } else {
-                        a.img._noVNC_display = this;
-                        a.img.addEventListener('load', this._resume_renderQ);
+                        a.img._noVNCDisplay = this;
+                        a.img.addEventListener('load', this._resumeRenderQ);
                         // We need to wait for this image to 'load'
                         // to keep things in-order
                         ready = false;
@@ -653,46 +521,5 @@ Display.prototype = {
             this._flushing = false;
             this.onflush();
         }
-    },
-};
-
-// Class Methods
-Display.changeCursor = function (target, pixels, mask, hotx, hoty, w, h) {
-    if ((w === 0) || (h === 0)) {
-        target.style.cursor = 'none';
-        return;
     }
-
-    var cur = []
-    var y, x;
-    for (y = 0; y < h; y++) {
-        for (x = 0; x < w; x++) {
-            var idx = y * Math.ceil(w / 8) + Math.floor(x / 8);
-            var alpha = (mask[idx] << (x % 8)) & 0x80 ? 255 : 0;
-            idx = ((w * y) + x) * 4;
-            cur.push(pixels[idx + 2]); // red
-            cur.push(pixels[idx + 1]); // green
-            cur.push(pixels[idx]);     // blue
-            cur.push(alpha);           // alpha
-        }
-    }
-
-    var canvas = document.createElement('canvas');
-    var ctx = canvas.getContext('2d');
-
-    canvas.width = w;
-    canvas.height = h;
-
-    var img;
-    if (SUPPORTS_IMAGEDATA_CONSTRUCTOR) {
-        img = new ImageData(new Uint8ClampedArray(cur), w, h);
-    } else {
-        img = ctx.createImageData(w, h);
-        img.data.set(new Uint8ClampedArray(cur));
-    }
-    ctx.clearRect(0, 0, w, h);
-    ctx.putImageData(img, 0, 0);
-
-    var url = canvas.toDataURL();
-    target.style.cursor = 'url(' + url + ')' + hotx + ' ' + hoty + ', default';
-};
+}

core/encodings.js

@@ -1,17 +1,20 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2017 Pierre Ossman for Cendio AB
+ * Copyright (C) 2019 The noVNC Authors
  * Licensed under MPL 2.0 (see LICENSE.txt)
  *
  * See README.md for usage and integration instructions.
  */
 
-export var encodings = {
+export const encodings = {
     encodingRaw: 0,
     encodingCopyRect: 1,
     encodingRRE: 2,
     encodingHextile: 5,
     encodingTight: 7,
+    encodingZRLE: 16,
+    encodingTightPNG: -260,
+    encodingJPEG: 21,
 
     pseudoEncodingQualityLevel9: -23,
     pseudoEncodingQualityLevel0: -32,
@@ -19,13 +22,15 @@ export var encodings = {
     pseudoEncodingLastRect: -224,
     pseudoEncodingCursor: -239,
     pseudoEncodingQEMUExtendedKeyEvent: -258,
-    pseudoEncodingTightPNG: -260,
+    pseudoEncodingDesktopName: -307,
     pseudoEncodingExtendedDesktopSize: -308,
     pseudoEncodingXvp: -309,
     pseudoEncodingFence: -312,
     pseudoEncodingContinuousUpdates: -313,
     pseudoEncodingCompressLevel9: -247,
     pseudoEncodingCompressLevel0: -256,
+    pseudoEncodingVMwareCursor: 0x574d5664,
+    pseudoEncodingExtendedClipboard: 0xc0a1e5ce
 };
 
 export function encodingName(num) {
@@ -35,6 +40,9 @@ export function encodingName(num) {
         case encodings.encodingRRE:      return "RRE";
         case encodings.encodingHextile:  return "Hextile";
         case encodings.encodingTight:    return "Tight";
+        case encodings.encodingZRLE:     return "ZRLE";
+        case encodings.encodingTightPNG: return "TightPNG";
+        case encodings.encodingJPEG:     return "JPEG";
         default:                         return "[unknown encoding " + num + "]";
     }
 }

core/inflator.js

@@ -1,13 +1,40 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2020 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
+
 import { inflateInit, inflate, inflateReset } from "../vendor/pako/lib/zlib/inflate.js";
 import ZStream from "../vendor/pako/lib/zlib/zstream.js";
 
-Inflate.prototype = {
-    inflate: function (data, flush, expected) {
-        this.strm.input = data;
-        this.strm.avail_in = this.strm.input.length;
-        this.strm.next_in = 0;
-        this.strm.next_out = 0;
+export default class Inflate {
+    constructor() {
+        this.strm = new ZStream();
+        this.chunkSize = 1024 * 10 * 10;
+        this.strm.output = new Uint8Array(this.chunkSize);
+        this.windowBits = 5;
 
+        inflateInit(this.strm, this.windowBits);
+    }
+
+    setInput(data) {
+        if (!data) {
+            //FIXME: flush remaining data.
+            /* eslint-disable camelcase */
+            this.strm.input = null;
+            this.strm.avail_in = 0;
+            this.strm.next_in = 0;
+        } else {
+            this.strm.input = data;
+            this.strm.avail_in = this.strm.input.length;
+            this.strm.next_in = 0;
+            /* eslint-enable camelcase */
+        }
+    }
+
+    inflate(expected) {
         // resize our output buffer if it's too small
         // (we could just use multiple chunks, but that would cause an extra
         // allocation each time to flatten the chunks)
@@ -16,23 +43,24 @@ Inflate.prototype = {
             this.strm.output = new Uint8Array(this.chunkSize);
         }
 
-        this.strm.avail_out = this.chunkSize;
+        /* eslint-disable camelcase */
+        this.strm.next_out = 0;
+        this.strm.avail_out = expected;
+        /* eslint-enable camelcase */
 
-        inflate(this.strm, flush);
+        let ret = inflate(this.strm, 0); // Flush argument not used.
+        if (ret < 0) {
+            throw new Error("zlib inflate failed");
+        }
+
+        if (this.strm.next_out != expected) {
+            throw new Error("Incomplete zlib block");
+        }
 
         return new Uint8Array(this.strm.output.buffer, 0, this.strm.next_out);
-    },
+    }
 
-    reset: function () {
+    reset() {
         inflateReset(this.strm);
     }
-};
-
-export default function Inflate() {
-    this.strm = new ZStream();
-    this.chunkSize = 1024 * 10 * 10;
-    this.strm.output = new Uint8Array(this.chunkSize);
-    this.windowBits = 5;
-
-    inflateInit(this.strm, this.windowBits);
-};
+}

core/input/domkeytable.js

@@ -1,6 +1,6 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2017 Pierre Ossman for Cendio AB
+ * Copyright (C) 2018 The noVNC Authors
  * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
  */
 
@@ -13,32 +13,29 @@ import KeyTable from "./keysym.js";
  * See https://www.w3.org/TR/uievents-key/ for possible values.
  */
 
-var DOMKeyTable = {};
+const DOMKeyTable = {};
 
-function addStandard(key, standard)
-{
-    if (standard === undefined) throw "Undefined keysym for key \"" + key + "\"";
-    if (key in DOMKeyTable) throw "Duplicate entry for key \"" + key + "\"";
+function addStandard(key, standard) {
+    if (standard === undefined) throw new Error("Undefined keysym for key \"" + key + "\"");
+    if (key in DOMKeyTable) throw new Error("Duplicate entry for key \"" + key + "\"");
     DOMKeyTable[key] = [standard, standard, standard, standard];
 }
 
-function addLeftRight(key, left, right)
-{
-    if (left === undefined) throw "Undefined keysym for key \"" + key + "\"";
-    if (right === undefined) throw "Undefined keysym for key \"" + key + "\"";
-    if (key in DOMKeyTable) throw "Duplicate entry for key \"" + key + "\"";
+function addLeftRight(key, left, right) {
+    if (left === undefined) throw new Error("Undefined keysym for key \"" + key + "\"");
+    if (right === undefined) throw new Error("Undefined keysym for key \"" + key + "\"");
+    if (key in DOMKeyTable) throw new Error("Duplicate entry for key \"" + key + "\"");
     DOMKeyTable[key] = [left, left, right, left];
 }
 
-function addNumpad(key, standard, numpad)
-{
-    if (standard === undefined) throw "Undefined keysym for key \"" + key + "\"";
-    if (numpad === undefined) throw "Undefined keysym for key \"" + key + "\"";
-    if (key in DOMKeyTable) throw "Duplicate entry for key \"" + key + "\"";
+function addNumpad(key, standard, numpad) {
+    if (standard === undefined) throw new Error("Undefined keysym for key \"" + key + "\"");
+    if (numpad === undefined) throw new Error("Undefined keysym for key \"" + key + "\"");
+    if (key in DOMKeyTable) throw new Error("Duplicate entry for key \"" + key + "\"");
     DOMKeyTable[key] = [standard, standard, standard, numpad];
 }
 
-// 2.2. Modifier Keys
+// 3.2. Modifier Keys
 
 addLeftRight("Alt", KeyTable.XK_Alt_L, KeyTable.XK_Alt_R);
 addStandard("AltGraph", KeyTable.XK_ISO_Level3_Shift);
@@ -46,36 +43,39 @@ addStandard("CapsLock", KeyTable.XK_Caps_Lock);
 addLeftRight("Control", KeyTable.XK_Control_L, KeyTable.XK_Control_R);
 // - Fn
 // - FnLock
-addLeftRight("Hyper", KeyTable.XK_Super_L, KeyTable.XK_Super_R);
 addLeftRight("Meta", KeyTable.XK_Super_L, KeyTable.XK_Super_R);
 addStandard("NumLock", KeyTable.XK_Num_Lock);
 addStandard("ScrollLock", KeyTable.XK_Scroll_Lock);
 addLeftRight("Shift", KeyTable.XK_Shift_L, KeyTable.XK_Shift_R);
-addLeftRight("Super", KeyTable.XK_Super_L, KeyTable.XK_Super_R);
 // - Symbol
 // - SymbolLock
+// - Hyper
+// - Super
 
-// 2.3. Whitespace Keys
+// 3.3. Whitespace Keys
 
 addNumpad("Enter", KeyTable.XK_Return, KeyTable.XK_KP_Enter);
 addStandard("Tab", KeyTable.XK_Tab);
 addNumpad(" ", KeyTable.XK_space, KeyTable.XK_KP_Space);
 
-// 2.4. Navigation Keys
+// 3.4. Navigation Keys
 
 addNumpad("ArrowDown", KeyTable.XK_Down, KeyTable.XK_KP_Down);
-addNumpad("ArrowUp", KeyTable.XK_Up, KeyTable.XK_KP_Up);
 addNumpad("ArrowLeft", KeyTable.XK_Left, KeyTable.XK_KP_Left);
 addNumpad("ArrowRight", KeyTable.XK_Right, KeyTable.XK_KP_Right);
+addNumpad("ArrowUp", KeyTable.XK_Up, KeyTable.XK_KP_Up);
 addNumpad("End", KeyTable.XK_End, KeyTable.XK_KP_End);
 addNumpad("Home", KeyTable.XK_Home, KeyTable.XK_KP_Home);
 addNumpad("PageDown", KeyTable.XK_Next, KeyTable.XK_KP_Next);
 addNumpad("PageUp", KeyTable.XK_Prior, KeyTable.XK_KP_Prior);
 
-// 2.5. Editing Keys
+// 3.5. Editing Keys
 
 addStandard("Backspace", KeyTable.XK_BackSpace);
-addStandard("Clear", KeyTable.XK_Clear);
+// Browsers send "Clear" for the numpad 5 without NumLock because
+// Windows uses VK_Clear for that key. But Unix expects KP_Begin for
+// that scenario.
+addNumpad("Clear", KeyTable.XK_Clear, KeyTable.XK_KP_Begin);
 addStandard("Copy", KeyTable.XF86XK_Copy);
 // - CrSel
 addStandard("Cut", KeyTable.XF86XK_Cut);
@@ -87,7 +87,7 @@ addStandard("Paste", KeyTable.XF86XK_Paste);
 addStandard("Redo", KeyTable.XK_Redo);
 addStandard("Undo", KeyTable.XK_Undo);
 
-// 2.6. UI Keys
+// 3.6. UI Keys
 
 // - Accept
 // - Again (could just be XK_Redo)
@@ -105,7 +105,7 @@ addStandard("Select", KeyTable.XK_Select);
 addStandard("ZoomIn", KeyTable.XF86XK_ZoomIn);
 addStandard("ZoomOut", KeyTable.XF86XK_ZoomOut);
 
-// 2.7. Device Keys
+// 3.7. Device Keys
 
 addStandard("BrightnessDown", KeyTable.XF86XK_MonBrightnessDown);
 addStandard("BrightnessUp", KeyTable.XF86XK_MonBrightnessUp);
@@ -118,10 +118,10 @@ addStandard("Hibernate", KeyTable.XF86XK_Hibernate);
 addStandard("Standby", KeyTable.XF86XK_Standby);
 addStandard("WakeUp", KeyTable.XF86XK_WakeUp);
 
-// 2.8. IME and Composition Keys
+// 3.8. IME and Composition Keys
 
 addStandard("AllCandidates", KeyTable.XK_MultipleCandidate);
-addStandard("Alphanumeric", KeyTable.XK_Eisu_Shift); // could also be _Eisu_Toggle
+addStandard("Alphanumeric", KeyTable.XK_Eisu_toggle);
 addStandard("CodeInput", KeyTable.XK_Codeinput);
 addStandard("Compose", KeyTable.XK_Multi_key);
 addStandard("Convert", KeyTable.XK_Henkan);
@@ -139,7 +139,7 @@ addStandard("PreviousCandidate", KeyTable.XK_PreviousCandidate);
 addStandard("SingleCandidate", KeyTable.XK_SingleCandidate);
 addStandard("HangulMode", KeyTable.XK_Hangul);
 addStandard("HanjaMode", KeyTable.XK_Hangul_Hanja);
-addStandard("JunjuaMode", KeyTable.XK_Hangul_Jeonja);
+addStandard("JunjaMode", KeyTable.XK_Hangul_Jeonja);
 addStandard("Eisu", KeyTable.XK_Eisu_toggle);
 addStandard("Hankaku", KeyTable.XK_Hankaku);
 addStandard("Hiragana", KeyTable.XK_Hiragana);
@@ -149,9 +149,9 @@ addStandard("KanjiMode", KeyTable.XK_Kanji);
 addStandard("Katakana", KeyTable.XK_Katakana);
 addStandard("Romaji", KeyTable.XK_Romaji);
 addStandard("Zenkaku", KeyTable.XK_Zenkaku);
-addStandard("ZenkakuHanaku", KeyTable.XK_Zenkaku_Hankaku);
+addStandard("ZenkakuHankaku", KeyTable.XK_Zenkaku_Hankaku);
 
-// 2.9. General-Purpose Function Keys
+// 3.9. General-Purpose Function Keys
 
 addStandard("F1", KeyTable.XK_F1);
 addStandard("F2", KeyTable.XK_F2);
@@ -190,17 +190,19 @@ addStandard("F34", KeyTable.XK_F34);
 addStandard("F35", KeyTable.XK_F35);
 // - Soft1...
 
-// 2.10. Multimedia Keys
+// 3.10. Multimedia Keys
 
 // - ChannelDown
 // - ChannelUp
 addStandard("Close", KeyTable.XF86XK_Close);
 addStandard("MailForward", KeyTable.XF86XK_MailForward);
 addStandard("MailReply", KeyTable.XF86XK_Reply);
-addStandard("MainSend", KeyTable.XF86XK_Send);
+addStandard("MailSend", KeyTable.XF86XK_Send);
+// - MediaClose
 addStandard("MediaFastForward", KeyTable.XF86XK_AudioForward);
 addStandard("MediaPause", KeyTable.XF86XK_AudioPause);
 addStandard("MediaPlay", KeyTable.XF86XK_AudioPlay);
+// - MediaPlayPause
 addStandard("MediaRecord", KeyTable.XF86XK_AudioRecord);
 addStandard("MediaRewind", KeyTable.XF86XK_AudioRewind);
 addStandard("MediaStop", KeyTable.XF86XK_AudioStop);
@@ -212,20 +214,18 @@ addStandard("Print", KeyTable.XK_Print);
 addStandard("Save", KeyTable.XF86XK_Save);
 addStandard("SpellCheck", KeyTable.XF86XK_Spell);
 
-// 2.11. Multimedia Numpad Keys
+// 3.11. Multimedia Numpad Keys
 
 // - Key11
 // - Key12
 
-// 2.12. Audio Keys
+// 3.12. Audio Keys
 
 // - AudioBalanceLeft
 // - AudioBalanceRight
-// - AudioBassDown
 // - AudioBassBoostDown
 // - AudioBassBoostToggle
 // - AudioBassBoostUp
-// - AudioBassUp
 // - AudioFaderFront
 // - AudioFaderRear
 // - AudioSurroundModeNext
@@ -239,19 +239,20 @@ addStandard("AudioVolumeMute", KeyTable.XF86XK_AudioMute);
 // - MicrophoneVolumeUp
 addStandard("MicrophoneVolumeMute", KeyTable.XF86XK_AudioMicMute);
 
-// 2.13. Speech Keys
+// 3.13. Speech Keys
 
 // - SpeechCorrectionList
 // - SpeechInputToggle
 
-// 2.14. Application Keys
+// 3.14. Application Keys
 
-addStandard("LaunchCalculator", KeyTable.XF86XK_Calculator);
+addStandard("LaunchApplication1", KeyTable.XF86XK_MyComputer);
+addStandard("LaunchApplication2", KeyTable.XF86XK_Calculator);
 addStandard("LaunchCalendar", KeyTable.XF86XK_Calendar);
+// - LaunchContacts
 addStandard("LaunchMail", KeyTable.XF86XK_Mail);
 addStandard("LaunchMediaPlayer", KeyTable.XF86XK_AudioMedia);
 addStandard("LaunchMusicPlayer", KeyTable.XF86XK_Music);
-addStandard("LaunchMyComputer", KeyTable.XF86XK_MyComputer);
 addStandard("LaunchPhone", KeyTable.XF86XK_Phone);
 addStandard("LaunchScreenSaver", KeyTable.XF86XK_ScreenSaver);
 addStandard("LaunchSpreadsheet", KeyTable.XF86XK_Excel);
@@ -259,7 +260,7 @@ addStandard("LaunchWebBrowser", KeyTable.XF86XK_WWW);
 addStandard("LaunchWebCam", KeyTable.XF86XK_WebCam);
 addStandard("LaunchWordProcessor", KeyTable.XF86XK_Word);
 
-// 2.15. Browser Keys
+// 3.15. Browser Keys
 
 addStandard("BrowserBack", KeyTable.XF86XK_Back);
 addStandard("BrowserFavorites", KeyTable.XF86XK_Favorites);
@@ -269,15 +270,15 @@ addStandard("BrowserRefresh", KeyTable.XF86XK_Refresh);
 addStandard("BrowserSearch", KeyTable.XF86XK_Search);
 addStandard("BrowserStop", KeyTable.XF86XK_Stop);
 
-// 2.16. Mobile Phone Keys
+// 3.16. Mobile Phone Keys
 
 // - A whole bunch...
 
-// 2.17. TV Keys
+// 3.17. TV Keys
 
 // - A whole bunch...
 
-// 2.18. Media Controller Keys
+// 3.18. Media Controller Keys
 
 // - A whole bunch...
 addStandard("Dimmer", KeyTable.XF86XK_BrightnessAdjust);

core/input/fixedkeys.js

@@ -1,6 +1,6 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2017 Pierre Ossman for Cendio AB
+ * Copyright (C) 2018 The noVNC Authors
  * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
  */
 
@@ -14,6 +14,8 @@
  * See https://www.w3.org/TR/uievents-key/ for possible values.
  */
 
+/* eslint-disable key-spacing */
+
 export default {
 
 // 3.1.1.1. Writing System Keys

core/input/gesturehandler.js

@@ -0,0 +1,567 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2020 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+const GH_NOGESTURE = 0;
+const GH_ONETAP    = 1;
+const GH_TWOTAP    = 2;
+const GH_THREETAP  = 4;
+const GH_DRAG      = 8;
+const GH_LONGPRESS = 16;
+const GH_TWODRAG   = 32;
+const GH_PINCH     = 64;
+
+const GH_INITSTATE = 127;
+
+const GH_MOVE_THRESHOLD = 50;
+const GH_ANGLE_THRESHOLD = 90; // Degrees
+
+// Timeout when waiting for gestures (ms)
+const GH_MULTITOUCH_TIMEOUT = 250;
+
+// Maximum time between press and release for a tap (ms)
+const GH_TAP_TIMEOUT = 1000;
+
+// Timeout when waiting for longpress (ms)
+const GH_LONGPRESS_TIMEOUT = 1000;
+
+// Timeout when waiting to decide between PINCH and TWODRAG (ms)
+const GH_TWOTOUCH_TIMEOUT = 50;
+
+export default class GestureHandler {
+    constructor() {
+        this._target = null;
+
+        this._state = GH_INITSTATE;
+
+        this._tracked = [];
+        this._ignored = [];
+
+        this._waitingRelease = false;
+        this._releaseStart = 0.0;
+
+        this._longpressTimeoutId = null;
+        this._twoTouchTimeoutId = null;
+
+        this._boundEventHandler = this._eventHandler.bind(this);
+    }
+
+    attach(target) {
+        this.detach();
+
+        this._target = target;
+        this._target.addEventListener('touchstart',
+                                      this._boundEventHandler);
+        this._target.addEventListener('touchmove',
+                                      this._boundEventHandler);
+        this._target.addEventListener('touchend',
+                                      this._boundEventHandler);
+        this._target.addEventListener('touchcancel',
+                                      this._boundEventHandler);
+    }
+
+    detach() {
+        if (!this._target) {
+            return;
+        }
+
+        this._stopLongpressTimeout();
+        this._stopTwoTouchTimeout();
+
+        this._target.removeEventListener('touchstart',
+                                         this._boundEventHandler);
+        this._target.removeEventListener('touchmove',
+                                         this._boundEventHandler);
+        this._target.removeEventListener('touchend',
+                                         this._boundEventHandler);
+        this._target.removeEventListener('touchcancel',
+                                         this._boundEventHandler);
+        this._target = null;
+    }
+
+    _eventHandler(e) {
+        let fn;
+
+        e.stopPropagation();
+        e.preventDefault();
+
+        switch (e.type) {
+            case 'touchstart':
+                fn = this._touchStart;
+                break;
+            case 'touchmove':
+                fn = this._touchMove;
+                break;
+            case 'touchend':
+            case 'touchcancel':
+                fn = this._touchEnd;
+                break;
+        }
+
+        for (let i = 0; i < e.changedTouches.length; i++) {
+            let touch = e.changedTouches[i];
+            fn.call(this, touch.identifier, touch.clientX, touch.clientY);
+        }
+    }
+
+    _touchStart(id, x, y) {
+        // Ignore any new touches if there is already an active gesture,
+        // or we're in a cleanup state
+        if (this._hasDetectedGesture() || (this._state === GH_NOGESTURE)) {
+            this._ignored.push(id);
+            return;
+        }
+
+        // Did it take too long between touches that we should no longer
+        // consider this a single gesture?
+        if ((this._tracked.length > 0) &&
+            ((Date.now() - this._tracked[0].started) > GH_MULTITOUCH_TIMEOUT)) {
+            this._state = GH_NOGESTURE;
+            this._ignored.push(id);
+            return;
+        }
+
+        // If we're waiting for fingers to release then we should no longer
+        // recognize new touches
+        if (this._waitingRelease) {
+            this._state = GH_NOGESTURE;
+            this._ignored.push(id);
+            return;
+        }
+
+        this._tracked.push({
+            id: id,
+            started: Date.now(),
+            active: true,
+            firstX: x,
+            firstY: y,
+            lastX: x,
+            lastY: y,
+            angle: 0
+        });
+
+        switch (this._tracked.length) {
+            case 1:
+                this._startLongpressTimeout();
+                break;
+
+            case 2:
+                this._state &= ~(GH_ONETAP | GH_DRAG | GH_LONGPRESS);
+                this._stopLongpressTimeout();
+                break;
+
+            case 3:
+                this._state &= ~(GH_TWOTAP | GH_TWODRAG | GH_PINCH);
+                break;
+
+            default:
+                this._state = GH_NOGESTURE;
+        }
+    }
+
+    _touchMove(id, x, y) {
+        let touch = this._tracked.find(t => t.id === id);
+
+        // If this is an update for a touch we're not tracking, ignore it
+        if (touch === undefined) {
+            return;
+        }
+
+        // Update the touches last position with the event coordinates
+        touch.lastX = x;
+        touch.lastY = y;
+
+        let deltaX = x - touch.firstX;
+        let deltaY = y - touch.firstY;
+
+        // Update angle when the touch has moved
+        if ((touch.firstX !== touch.lastX) ||
+            (touch.firstY !== touch.lastY)) {
+            touch.angle = Math.atan2(deltaY, deltaX) * 180 / Math.PI;
+        }
+
+        if (!this._hasDetectedGesture()) {
+            // Ignore moves smaller than the minimum threshold
+            if (Math.hypot(deltaX, deltaY) < GH_MOVE_THRESHOLD) {
+                return;
+            }
+
+            // Can't be a tap or long press as we've seen movement
+            this._state &= ~(GH_ONETAP | GH_TWOTAP | GH_THREETAP | GH_LONGPRESS);
+            this._stopLongpressTimeout();
+
+            if (this._tracked.length !== 1) {
+                this._state &= ~(GH_DRAG);
+            }
+            if (this._tracked.length !== 2) {
+                this._state &= ~(GH_TWODRAG | GH_PINCH);
+            }
+
+            // We need to figure out which of our different two touch gestures
+            // this might be
+            if (this._tracked.length === 2) {
+
+                // The other touch is the one where the id doesn't match
+                let prevTouch = this._tracked.find(t => t.id !== id);
+
+                // How far the previous touch point has moved since start
+                let prevDeltaMove = Math.hypot(prevTouch.firstX - prevTouch.lastX,
+                                               prevTouch.firstY - prevTouch.lastY);
+
+                // We know that the current touch moved far enough,
+                // but unless both touches moved further than their
+                // threshold we don't want to disqualify any gestures
+                if (prevDeltaMove > GH_MOVE_THRESHOLD) {
+
+                    // The angle difference between the direction of the touch points
+                    let deltaAngle = Math.abs(touch.angle - prevTouch.angle);
+                    deltaAngle = Math.abs(((deltaAngle + 180) % 360) - 180);
+
+                    // PINCH or TWODRAG can be eliminated depending on the angle
+                    if (deltaAngle > GH_ANGLE_THRESHOLD) {
+                        this._state &= ~GH_TWODRAG;
+                    } else {
+                        this._state &= ~GH_PINCH;
+                    }
+
+                    if (this._isTwoTouchTimeoutRunning()) {
+                        this._stopTwoTouchTimeout();
+                    }
+                } else if (!this._isTwoTouchTimeoutRunning()) {
+                    // We can't determine the gesture right now, let's
+                    // wait and see if more events are on their way
+                    this._startTwoTouchTimeout();
+                }
+            }
+
+            if (!this._hasDetectedGesture()) {
+                return;
+            }
+
+            this._pushEvent('gesturestart');
+        }
+
+        this._pushEvent('gesturemove');
+    }
+
+    _touchEnd(id, x, y) {
+        // Check if this is an ignored touch
+        if (this._ignored.indexOf(id) !== -1) {
+            // Remove this touch from ignored
+            this._ignored.splice(this._ignored.indexOf(id), 1);
+
+            // And reset the state if there are no more touches
+            if ((this._ignored.length === 0) &&
+                (this._tracked.length === 0)) {
+                this._state = GH_INITSTATE;
+                this._waitingRelease = false;
+            }
+            return;
+        }
+
+        // We got a touchend before the timer triggered,
+        // this cannot result in a gesture anymore.
+        if (!this._hasDetectedGesture() &&
+            this._isTwoTouchTimeoutRunning()) {
+            this._stopTwoTouchTimeout();
+            this._state = GH_NOGESTURE;
+        }
+
+        // Some gestures don't trigger until a touch is released
+        if (!this._hasDetectedGesture()) {
+            // Can't be a gesture that relies on movement
+            this._state &= ~(GH_DRAG | GH_TWODRAG | GH_PINCH);
+            // Or something that relies on more time
+            this._state &= ~GH_LONGPRESS;
+            this._stopLongpressTimeout();
+
+            if (!this._waitingRelease) {
+                this._releaseStart = Date.now();
+                this._waitingRelease = true;
+
+                // Can't be a tap that requires more touches than we current have
+                switch (this._tracked.length) {
+                    case 1:
+                        this._state &= ~(GH_TWOTAP | GH_THREETAP);
+                        break;
+
+                    case 2:
+                        this._state &= ~(GH_ONETAP | GH_THREETAP);
+                        break;
+                }
+            }
+        }
+
+        // Waiting for all touches to release? (i.e. some tap)
+        if (this._waitingRelease) {
+            // Were all touches released at roughly the same time?
+            if ((Date.now() - this._releaseStart) > GH_MULTITOUCH_TIMEOUT) {
+                this._state = GH_NOGESTURE;
+            }
+
+            // Did too long time pass between press and release?
+            if (this._tracked.some(t => (Date.now() - t.started) > GH_TAP_TIMEOUT)) {
+                this._state = GH_NOGESTURE;
+            }
+
+            let touch = this._tracked.find(t => t.id === id);
+            touch.active = false;
+
+            // Are we still waiting for more releases?
+            if (this._hasDetectedGesture()) {
+                this._pushEvent('gesturestart');
+            } else {
+                // Have we reached a dead end?
+                if (this._state !== GH_NOGESTURE) {
+                    return;
+                }
+            }
+        }
+
+        if (this._hasDetectedGesture()) {
+            this._pushEvent('gestureend');
+        }
+
+        // Ignore any remaining touches until they are ended
+        for (let i = 0; i < this._tracked.length; i++) {
+            if (this._tracked[i].active) {
+                this._ignored.push(this._tracked[i].id);
+            }
+        }
+        this._tracked = [];
+
+        this._state = GH_NOGESTURE;
+
+        // Remove this touch from ignored if it's in there
+        if (this._ignored.indexOf(id) !== -1) {
+            this._ignored.splice(this._ignored.indexOf(id), 1);
+        }
+
+        // We reset the state if ignored is empty
+        if ((this._ignored.length === 0)) {
+            this._state = GH_INITSTATE;
+            this._waitingRelease = false;
+        }
+    }
+
+    _hasDetectedGesture() {
+        if (this._state === GH_NOGESTURE) {
+            return false;
+        }
+        // Check to see if the bitmask value is a power of 2
+        // (i.e. only one bit set). If it is, we have a state.
+        if (this._state & (this._state - 1)) {
+            return false;
+        }
+
+        // For taps we also need to have all touches released
+        // before we've fully detected the gesture
+        if (this._state & (GH_ONETAP | GH_TWOTAP | GH_THREETAP)) {
+            if (this._tracked.some(t => t.active)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    _startLongpressTimeout() {
+        this._stopLongpressTimeout();
+        this._longpressTimeoutId = setTimeout(() => this._longpressTimeout(),
+                                              GH_LONGPRESS_TIMEOUT);
+    }
+
+    _stopLongpressTimeout() {
+        clearTimeout(this._longpressTimeoutId);
+        this._longpressTimeoutId = null;
+    }
+
+    _longpressTimeout() {
+        if (this._hasDetectedGesture()) {
+            throw new Error("A longpress gesture failed, conflict with a different gesture");
+        }
+
+        this._state = GH_LONGPRESS;
+        this._pushEvent('gesturestart');
+    }
+
+    _startTwoTouchTimeout() {
+        this._stopTwoTouchTimeout();
+        this._twoTouchTimeoutId = setTimeout(() => this._twoTouchTimeout(),
+                                             GH_TWOTOUCH_TIMEOUT);
+    }
+
+    _stopTwoTouchTimeout() {
+        clearTimeout(this._twoTouchTimeoutId);
+        this._twoTouchTimeoutId = null;
+    }
+
+    _isTwoTouchTimeoutRunning() {
+        return this._twoTouchTimeoutId !== null;
+    }
+
+    _twoTouchTimeout() {
+        if (this._tracked.length === 0) {
+            throw new Error("A pinch or two drag gesture failed, no tracked touches");
+        }
+
+        // How far each touch point has moved since start
+        let avgM = this._getAverageMovement();
+        let avgMoveH = Math.abs(avgM.x);
+        let avgMoveV = Math.abs(avgM.y);
+
+        // The difference in the distance between where
+        // the touch points started and where they are now
+        let avgD = this._getAverageDistance();
+        let deltaTouchDistance = Math.abs(Math.hypot(avgD.first.x, avgD.first.y) -
+                                          Math.hypot(avgD.last.x, avgD.last.y));
+
+        if ((avgMoveV < deltaTouchDistance) &&
+            (avgMoveH < deltaTouchDistance)) {
+            this._state = GH_PINCH;
+        } else {
+            this._state = GH_TWODRAG;
+        }
+
+        this._pushEvent('gesturestart');
+        this._pushEvent('gesturemove');
+    }
+
+    _pushEvent(type) {
+        let detail = { type: this._stateToGesture(this._state) };
+
+        // For most gesture events the current (average) position is the
+        // most useful
+        let avg = this._getPosition();
+        let pos = avg.last;
+
+        // However we have a slight distance to detect gestures, so for the
+        // first gesture event we want to use the first positions we saw
+        if (type === 'gesturestart') {
+            pos = avg.first;
+        }
+
+        // For these gestures, we always want the event coordinates
+        // to be where the gesture began, not the current touch location.
+        switch (this._state) {
+            case GH_TWODRAG:
+            case GH_PINCH:
+                pos = avg.first;
+                break;
+        }
+
+        detail['clientX'] = pos.x;
+        detail['clientY'] = pos.y;
+
+        // FIXME: other coordinates?
+
+        // Some gestures also have a magnitude
+        if (this._state === GH_PINCH) {
+            let distance = this._getAverageDistance();
+            if (type === 'gesturestart') {
+                detail['magnitudeX'] = distance.first.x;
+                detail['magnitudeY'] = distance.first.y;
+            } else {
+                detail['magnitudeX'] = distance.last.x;
+                detail['magnitudeY'] = distance.last.y;
+            }
+        } else if (this._state === GH_TWODRAG) {
+            if (type === 'gesturestart') {
+                detail['magnitudeX'] = 0.0;
+                detail['magnitudeY'] = 0.0;
+            } else {
+                let movement = this._getAverageMovement();
+                detail['magnitudeX'] = movement.x;
+                detail['magnitudeY'] = movement.y;
+            }
+        }
+
+        let gev = new CustomEvent(type, { detail: detail });
+        this._target.dispatchEvent(gev);
+    }
+
+    _stateToGesture(state) {
+        switch (state) {
+            case GH_ONETAP:
+                return 'onetap';
+            case GH_TWOTAP:
+                return 'twotap';
+            case GH_THREETAP:
+                return 'threetap';
+            case GH_DRAG:
+                return 'drag';
+            case GH_LONGPRESS:
+                return 'longpress';
+            case GH_TWODRAG:
+                return 'twodrag';
+            case GH_PINCH:
+                return 'pinch';
+        }
+
+        throw new Error("Unknown gesture state: " + state);
+    }
+
+    _getPosition() {
+        if (this._tracked.length === 0) {
+            throw new Error("Failed to get gesture position, no tracked touches");
+        }
+
+        let size = this._tracked.length;
+        let fx = 0, fy = 0, lx = 0, ly = 0;
+
+        for (let i = 0; i < this._tracked.length; i++) {
+            fx += this._tracked[i].firstX;
+            fy += this._tracked[i].firstY;
+            lx += this._tracked[i].lastX;
+            ly += this._tracked[i].lastY;
+        }
+
+        return { first: { x: fx / size,
+                          y: fy / size },
+                 last: { x: lx / size,
+                         y: ly / size } };
+    }
+
+    _getAverageMovement() {
+        if (this._tracked.length === 0) {
+            throw new Error("Failed to get gesture movement, no tracked touches");
+        }
+
+        let totalH, totalV;
+        totalH = totalV = 0;
+        let size = this._tracked.length;
+
+        for (let i = 0; i < this._tracked.length; i++) {
+            totalH += this._tracked[i].lastX - this._tracked[i].firstX;
+            totalV += this._tracked[i].lastY - this._tracked[i].firstY;
+        }
+
+        return { x: totalH / size,
+                 y: totalV / size };
+    }
+
+    _getAverageDistance() {
+        if (this._tracked.length === 0) {
+            throw new Error("Failed to get gesture distance, no tracked touches");
+        }
+
+        // Distance between the first and last tracked touches
+
+        let first = this._tracked[0];
+        let last = this._tracked[this._tracked.length - 1];
+
+        let fdx = Math.abs(last.firstX - first.firstX);
+        let fdy = Math.abs(last.firstY - first.firstY);
+
+        let ldx = Math.abs(last.lastX - first.lastX);
+        let ldy = Math.abs(last.lastY - first.lastY);
+
+        return { first: { x: fdx, y: fdy },
+                 last: { x: ldx, y: ldy } };
+    }
+}

core/input/keyboard.js

@@ -1,7 +1,6 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
- * Copyright (C) 2013 Samuel Mannehed for Cendio AB
+ * Copyright (C) 2019 The noVNC Authors
  * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
  */
 
@@ -15,71 +14,52 @@ import * as browser from "../util/browser.js";
 // Keyboard event handler
 //
 
-export default function Keyboard(target) {
-    this._target = target || null;
+export default class Keyboard {
+    constructor(target) {
+        this._target = target || null;
 
-    this._keyDownList = {};         // List of depressed keys
-                                    // (even if they are happy)
-    this._pendingKey = null;        // Key waiting for keypress
+        this._keyDownList = {};         // List of depressed keys
+                                        // (even if they are happy)
+        this._altGrArmed = false;       // Windows AltGr detection
 
-    // keep these here so we can refer to them later
-    this._eventHandlers = {
-        'keyup': this._handleKeyUp.bind(this),
-        'keydown': this._handleKeyDown.bind(this),
-        'keypress': this._handleKeyPress.bind(this),
-        'blur': this._allKeysUp.bind(this)
-    };
-};
+        // keep these here so we can refer to them later
+        this._eventHandlers = {
+            'keyup': this._handleKeyUp.bind(this),
+            'keydown': this._handleKeyDown.bind(this),
+            'blur': this._allKeysUp.bind(this),
+        };
 
-Keyboard.prototype = {
-    // ===== EVENT HANDLERS =====
+        // ===== EVENT HANDLERS =====
 
-    onkeyevent: function () {},     // Handler for key press/release
+        this.onkeyevent = () => {}; // Handler for key press/release
+    }
 
     // ===== PRIVATE METHODS =====
 
-    _sendKeyEvent: function (keysym, code, down) {
+    _sendKeyEvent(keysym, code, down) {
+        if (down) {
+            this._keyDownList[code] = keysym;
+        } else {
+            // Do we really think this key is down?
+            if (!(code in this._keyDownList)) {
+                return;
+            }
+            delete this._keyDownList[code];
+        }
+
         Log.Debug("onkeyevent " + (down ? "down" : "up") +
                   ", keysym: " + keysym, ", code: " + code);
-
-        // Windows sends CtrlLeft+AltRight when you press
-        // AltGraph, which tends to confuse the hell out of
-        // remote systems. Fake a release of these keys until
-        // there is a way to detect AltGraph properly.
-        var fakeAltGraph = false;
-        if (down && browser.isWindows()) {
-            if ((code !== 'ControlLeft') &&
-                (code !== 'AltRight') &&
-                ('ControlLeft' in this._keyDownList) &&
-                ('AltRight' in this._keyDownList)) {
-                fakeAltGraph = true;
-                this.onkeyevent(this._keyDownList['AltRight'],
-                                 'AltRight', false);
-                this.onkeyevent(this._keyDownList['ControlLeft'],
-                                 'ControlLeft', false);
-            }
-        }
-
         this.onkeyevent(keysym, code, down);
+    }
 
-        if (fakeAltGraph) {
-            this.onkeyevent(this._keyDownList['ControlLeft'],
-                             'ControlLeft', true);
-            this.onkeyevent(this._keyDownList['AltRight'],
-                             'AltRight', true);
-        }
-    },
-
-    _getKeyCode: function (e) {
-        var code = KeyboardUtil.getKeycode(e);
+    _getKeyCode(e) {
+        const code = KeyboardUtil.getKeycode(e);
         if (code !== 'Unidentified') {
             return code;
         }
 
         // Unstable, but we don't have anything else to go on
-        // (don't use it for 'keypress' events thought since
-        // WebKit sets it to the same as charCode)
-        if (e.keyCode && (e.type !== 'keypress')) {
+        if (e.keyCode) {
             // 229 is used for composition events
             if (e.keyCode !== 229) {
                 return 'Platform' + e.keyCode;
@@ -94,26 +74,46 @@ Keyboard.prototype = {
                 return e.keyIdentifier;
             }
 
-            var codepoint = parseInt(e.keyIdentifier.substr(2), 16);
-            var char = String.fromCharCode(codepoint);
-            // Some implementations fail to uppercase the symbols
-            char = char.toUpperCase();
+            const codepoint = parseInt(e.keyIdentifier.substr(2), 16);
+            const char = String.fromCharCode(codepoint).toUpperCase();
 
             return 'Platform' + char.charCodeAt();
         }
 
         return 'Unidentified';
-    },
+    }
 
-    _handleKeyDown: function (e) {
-        var code = this._getKeyCode(e);
-        var keysym = KeyboardUtil.getKeysym(e);
+    _handleKeyDown(e) {
+        const code = this._getKeyCode(e);
+        let keysym = KeyboardUtil.getKeysym(e);
+
+        // Windows doesn't have a proper AltGr, but handles it using
+        // fake Ctrl+Alt. However the remote end might not be Windows,
+        // so we need to merge those in to a single AltGr event. We
+        // detect this case by seeing the two key events directly after
+        // each other with a very short time between them (<50ms).
+        if (this._altGrArmed) {
+            this._altGrArmed = false;
+            clearTimeout(this._altGrTimeout);
+
+            if ((code === "AltRight") &&
+                ((e.timeStamp - this._altGrCtrlTime) < 50)) {
+                // FIXME: We fail to detect this if either Ctrl key is
+                //        first manually pressed as Windows then no
+                //        longer sends the fake Ctrl down event. It
+                //        does however happily send real Ctrl events
+                //        even when AltGr is already down. Some
+                //        browsers detect this for us though and set the
+                //        key to "AltGraph".
+                keysym = KeyTable.XK_ISO_Level3_Shift;
+            } else {
+                this._sendKeyEvent(KeyTable.XK_Control_L, "ControlLeft", true);
+            }
+        }
 
         // We cannot handle keys we cannot track, but we also need
         // to deal with virtual keyboards which omit key info
-        // (iOS omits tracking info on keyup events, which forces us to
-        // special treat that platform here)
-        if ((code === 'Unidentified') || browser.isIOS()) {
+        if (code === 'Unidentified') {
             if (keysym) {
                 // If it's a virtual keyboard then it should be
                 // sufficient to just send press and release right
@@ -130,20 +130,20 @@ Keyboard.prototype = {
         // keys around a bit to make things more sane for the remote
         // server. This method is used by RealVNC and TigerVNC (and
         // possibly others).
-        if (browser.isMac()) {
+        if (browser.isMac() || browser.isIOS()) {
             switch (keysym) {
-            case KeyTable.XK_Super_L:
-                keysym = KeyTable.XK_Alt_L;
-                break;
-            case KeyTable.XK_Super_R:
-                keysym = KeyTable.XK_Super_L;
-                break;
-            case KeyTable.XK_Alt_L:
-                keysym = KeyTable.XK_Mode_switch;
-                break;
-            case KeyTable.XK_Alt_R:
-                keysym = KeyTable.XK_ISO_Level3_Shift;
-                break;
+                case KeyTable.XK_Super_L:
+                    keysym = KeyTable.XK_Alt_L;
+                    break;
+                case KeyTable.XK_Super_R:
+                    keysym = KeyTable.XK_Super_L;
+                    break;
+                case KeyTable.XK_Alt_L:
+                    keysym = KeyTable.XK_Mode_switch;
+                    break;
+                case KeyTable.XK_Alt_R:
+                    keysym = KeyTable.XK_ISO_Level3_Shift;
+                    break;
             }
         }
 
@@ -153,162 +153,131 @@ Keyboard.prototype = {
             keysym = this._keyDownList[code];
         }
 
+        // macOS doesn't send proper key releases if a key is pressed
+        // while meta is held down
+        if ((browser.isMac() || browser.isIOS()) &&
+            (e.metaKey && code !== 'MetaLeft' && code !== 'MetaRight')) {
+            this._sendKeyEvent(keysym, code, true);
+            this._sendKeyEvent(keysym, code, false);
+            stopEvent(e);
+            return;
+        }
+
         // macOS doesn't send proper key events for modifiers, only
         // state change events. That gets extra confusing for CapsLock
         // which toggles on each press, but not on release. So pretend
         // it was a quick press and release of the button.
-        if (browser.isMac() && (code === 'CapsLock')) {
+        if ((browser.isMac() || browser.isIOS()) && (code === 'CapsLock')) {
             this._sendKeyEvent(KeyTable.XK_Caps_Lock, 'CapsLock', true);
             this._sendKeyEvent(KeyTable.XK_Caps_Lock, 'CapsLock', false);
             stopEvent(e);
             return;
         }
 
-        // If this is a legacy browser then we'll need to wait for
-        // a keypress event as well
-        // (IE and Edge has a broken KeyboardEvent.key, so we can't
-        // just check for the presence of that field)
-        if (!keysym && (!e.key || browser.isIE() || browser.isEdge())) {
-            this._pendingKey = code;
-            // However we might not get a keypress event if the key
-            // is non-printable, which needs some special fallback
-            // handling
-            setTimeout(this._handleKeyPressTimeout.bind(this), 10, e);
+        // Windows doesn't send proper key releases for a bunch of
+        // Japanese IM keys so we have to fake the release right away
+        const jpBadKeys = [ KeyTable.XK_Zenkaku_Hankaku,
+                            KeyTable.XK_Eisu_toggle,
+                            KeyTable.XK_Katakana,
+                            KeyTable.XK_Hiragana,
+                            KeyTable.XK_Romaji ];
+        if (browser.isWindows() && jpBadKeys.includes(keysym)) {
+            this._sendKeyEvent(keysym, code, true);
+            this._sendKeyEvent(keysym, code, false);
+            stopEvent(e);
             return;
         }
 
-        this._pendingKey = null;
         stopEvent(e);
 
-        this._keyDownList[code] = keysym;
+        // Possible start of AltGr sequence? (see above)
+        if ((code === "ControlLeft") && browser.isWindows() &&
+            !("ControlLeft" in this._keyDownList)) {
+            this._altGrArmed = true;
+            this._altGrTimeout = setTimeout(this._handleAltGrTimeout.bind(this), 100);
+            this._altGrCtrlTime = e.timeStamp;
+            return;
+        }
 
         this._sendKeyEvent(keysym, code, true);
-    },
+    }
 
-    // Legacy event for browsers without code/key
-    _handleKeyPress: function (e) {
+    _handleKeyUp(e) {
         stopEvent(e);
 
-        // Are we expecting a keypress?
-        if (this._pendingKey === null) {
-            return;
+        const code = this._getKeyCode(e);
+
+        // We can't get a release in the middle of an AltGr sequence, so
+        // abort that detection
+        if (this._altGrArmed) {
+            this._altGrArmed = false;
+            clearTimeout(this._altGrTimeout);
+            this._sendKeyEvent(KeyTable.XK_Control_L, "ControlLeft", true);
         }
 
-        var code = this._getKeyCode(e);
-        var keysym = KeyboardUtil.getKeysym(e);
-
-        // The key we were waiting for?
-        if ((code !== 'Unidentified') && (code != this._pendingKey)) {
-            return;
-        }
-
-        code = this._pendingKey;
-        this._pendingKey = null;
-
-        if (!keysym) {
-            Log.Info('keypress with no keysym:', e);
-            return;
-        }
-
-        this._keyDownList[code] = keysym;
-
-        this._sendKeyEvent(keysym, code, true);
-    },
-    _handleKeyPressTimeout: function (e) {
-        // Did someone manage to sort out the key already?
-        if (this._pendingKey === null) {
-            return;
-        }
-
-        var code, keysym;
-
-        code = this._pendingKey;
-        this._pendingKey = null;
-
-        // We have no way of knowing the proper keysym with the
-        // information given, but the following are true for most
-        // layouts
-        if ((e.keyCode >= 0x30) && (e.keyCode <= 0x39)) {
-            // Digit
-            keysym = e.keyCode;
-        } else if ((e.keyCode >= 0x41) && (e.keyCode <= 0x5a)) {
-            // Character (A-Z)
-            var char = String.fromCharCode(e.keyCode);
-            // A feeble attempt at the correct case
-            if (e.shiftKey)
-                char = char.toUpperCase();
-            else
-                char = char.toLowerCase();
-            keysym = char.charCodeAt();
-        } else {
-            // Unknown, give up
-            keysym = 0;
-        }
-
-        this._keyDownList[code] = keysym;
-
-        this._sendKeyEvent(keysym, code, true);
-    },
-
-    _handleKeyUp: function (e) {
-        stopEvent(e);
-
-        var code = this._getKeyCode(e);
-
         // See comment in _handleKeyDown()
-        if (browser.isMac() && (code === 'CapsLock')) {
+        if ((browser.isMac() || browser.isIOS()) && (code === 'CapsLock')) {
             this._sendKeyEvent(KeyTable.XK_Caps_Lock, 'CapsLock', true);
             this._sendKeyEvent(KeyTable.XK_Caps_Lock, 'CapsLock', false);
             return;
         }
 
-        // Do we really think this key is down?
-        if (!(code in this._keyDownList)) {
-            return;
-        }
-
         this._sendKeyEvent(this._keyDownList[code], code, false);
 
-        delete this._keyDownList[code];
-    },
+        // Windows has a rather nasty bug where it won't send key
+        // release events for a Shift button if the other Shift is still
+        // pressed
+        if (browser.isWindows() && ((code === 'ShiftLeft') ||
+                                    (code === 'ShiftRight'))) {
+            if ('ShiftRight' in this._keyDownList) {
+                this._sendKeyEvent(this._keyDownList['ShiftRight'],
+                                   'ShiftRight', false);
+            }
+            if ('ShiftLeft' in this._keyDownList) {
+                this._sendKeyEvent(this._keyDownList['ShiftLeft'],
+                                   'ShiftLeft', false);
+            }
+        }
+    }
 
-    _allKeysUp: function () {
+    _handleAltGrTimeout() {
+        this._altGrArmed = false;
+        clearTimeout(this._altGrTimeout);
+        this._sendKeyEvent(KeyTable.XK_Control_L, "ControlLeft", true);
+    }
+
+    _allKeysUp() {
         Log.Debug(">> Keyboard.allKeysUp");
-        for (var code in this._keyDownList) {
+        for (let code in this._keyDownList) {
             this._sendKeyEvent(this._keyDownList[code], code, false);
-        };
-        this._keyDownList = {};
+        }
         Log.Debug("<< Keyboard.allKeysUp");
-    },
+    }
 
     // ===== PUBLIC METHODS =====
 
-    grab: function () {
+    grab() {
         //Log.Debug(">> Keyboard.grab");
-        var c = this._target;
 
-        c.addEventListener('keydown', this._eventHandlers.keydown);
-        c.addEventListener('keyup', this._eventHandlers.keyup);
-        c.addEventListener('keypress', this._eventHandlers.keypress);
+        this._target.addEventListener('keydown', this._eventHandlers.keydown);
+        this._target.addEventListener('keyup', this._eventHandlers.keyup);
 
         // Release (key up) if window loses focus
         window.addEventListener('blur', this._eventHandlers.blur);
 
         //Log.Debug("<< Keyboard.grab");
-    },
+    }
 
-    ungrab: function () {
+    ungrab() {
         //Log.Debug(">> Keyboard.ungrab");
-        var c = this._target;
 
-        c.removeEventListener('keydown', this._eventHandlers.keydown);
-        c.removeEventListener('keyup', this._eventHandlers.keyup);
-        c.removeEventListener('keypress', this._eventHandlers.keypress);
+        this._target.removeEventListener('keydown', this._eventHandlers.keydown);
+        this._target.removeEventListener('keyup', this._eventHandlers.keyup);
         window.removeEventListener('blur', this._eventHandlers.blur);
 
         // Release (key up) all keys that are in a down state
         this._allKeysUp();
 
         //Log.Debug(">> Keyboard.ungrab");
-    },
-};
+    }
+}

core/input/keysym.js

@@ -1,3 +1,5 @@
+/* eslint-disable key-spacing */
+
 export default {
     XK_VoidSymbol:                  0xffffff, /* Void symbol */
 

core/input/keysymdef.js

@@ -7,7 +7,7 @@
 
 /* Functions at the bottom */
 
-var codepoints = {
+const codepoints = {
     0x0100: 0x03c0, // XK_Amacron
     0x0101: 0x03e0, // XK_amacron
     0x0102: 0x01c3, // XK_Abreve
@@ -670,14 +670,14 @@ var codepoints = {
 };
 
 export default {
-    lookup : function(u) {
+    lookup(u) {
         // Latin-1 is one-to-one mapping
         if ((u >= 0x20) && (u <= 0xff)) {
             return u;
         }
 
         // Lookup table (fairly random)
-        var keysym = codepoints[u];
+        const keysym = codepoints[u];
         if (keysym !== undefined) {
             return keysym;
         }

core/input/mouse.js

@@ -1,280 +0,0 @@
-/*
- * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
- * Copyright (C) 2013 Samuel Mannehed for Cendio AB
- * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
- */
-
-import * as Log from '../util/logging.js';
-import { isTouchDevice } from '../util/browser.js';
-import { setCapture, stopEvent, getPointerEvent } from '../util/events.js';
-
-var WHEEL_STEP = 10; // Delta threshold for a mouse wheel step
-var WHEEL_STEP_TIMEOUT = 50; // ms
-var WHEEL_LINE_HEIGHT = 19;
-
-export default function Mouse(target) {
-    this._target = target || document;
-
-    this._doubleClickTimer = null;
-    this._lastTouchPos = null;
-
-    this._pos = null;
-    this._wheelStepXTimer = null;
-    this._wheelStepYTimer = null;
-    this._accumulatedWheelDeltaX = 0;
-    this._accumulatedWheelDeltaY = 0;
-
-    this._eventHandlers = {
-        'mousedown': this._handleMouseDown.bind(this),
-        'mouseup': this._handleMouseUp.bind(this),
-        'mousemove': this._handleMouseMove.bind(this),
-        'mousewheel': this._handleMouseWheel.bind(this),
-        'mousedisable': this._handleMouseDisable.bind(this)
-    };
-};
-
-Mouse.prototype = {
-    // ===== PROPERTIES =====
-
-    touchButton: 1,                 // Button mask (1, 2, 4) for touch devices (0 means ignore clicks)
-
-    // ===== EVENT HANDLERS =====
-
-    onmousebutton: function () {},  // Handler for mouse button click/release
-    onmousemove: function () {},    // Handler for mouse movement
-
-    // ===== PRIVATE METHODS =====
-
-    _resetDoubleClickTimer: function () {
-        this._doubleClickTimer = null;
-    },
-
-    _handleMouseButton: function (e, down) {
-        this._updateMousePosition(e);
-        var pos = this._pos;
-
-        var bmask;
-        if (e.touches || e.changedTouches) {
-            // Touch device
-
-            // When two touches occur within 500 ms of each other and are
-            // close enough together a double click is triggered.
-            if (down == 1) {
-                if (this._doubleClickTimer === null) {
-                    this._lastTouchPos = pos;
-                } else {
-                    clearTimeout(this._doubleClickTimer);
-
-                    // When the distance between the two touches is small enough
-                    // force the position of the latter touch to the position of
-                    // the first.
-
-                    var xs = this._lastTouchPos.x - pos.x;
-                    var ys = this._lastTouchPos.y - pos.y;
-                    var d = Math.sqrt((xs * xs) + (ys * ys));
-
-                    // The goal is to trigger on a certain physical width, the
-                    // devicePixelRatio brings us a bit closer but is not optimal.
-                    var threshold = 20 * (window.devicePixelRatio || 1);
-                    if (d < threshold) {
-                        pos = this._lastTouchPos;
-                    }
-                }
-                this._doubleClickTimer = setTimeout(this._resetDoubleClickTimer.bind(this), 500);
-            }
-            bmask = this.touchButton;
-            // If bmask is set
-        } else if (e.which) {
-            /* everything except IE */
-            bmask = 1 << e.button;
-        } else {
-            /* IE including 9 */
-            bmask = (e.button & 0x1) +      // Left
-                    (e.button & 0x2) * 2 +  // Right
-                    (e.button & 0x4) / 2;   // Middle
-        }
-
-        Log.Debug("onmousebutton " + (down ? "down" : "up") +
-                  ", x: " + pos.x + ", y: " + pos.y + ", bmask: " + bmask);
-        this.onmousebutton(pos.x, pos.y, down, bmask);
-
-        stopEvent(e);
-    },
-
-    _handleMouseDown: function (e) {
-        // Touch events have implicit capture
-        if (e.type === "mousedown") {
-            setCapture(this._target);
-        }
-
-        this._handleMouseButton(e, 1);
-    },
-
-    _handleMouseUp: function (e) {
-        this._handleMouseButton(e, 0);
-    },
-
-    // Mouse wheel events are sent in steps over VNC. This means that the VNC
-    // protocol can't handle a wheel event with specific distance or speed.
-    // Therefor, if we get a lot of small mouse wheel events we combine them.
-    _generateWheelStepX: function () {
-
-        if (this._accumulatedWheelDeltaX < 0) {
-            this.onmousebutton(this._pos.x, this._pos.y, 1, 1 << 5);
-            this.onmousebutton(this._pos.x, this._pos.y, 0, 1 << 5);
-        } else if (this._accumulatedWheelDeltaX > 0) {
-            this.onmousebutton(this._pos.x, this._pos.y, 1, 1 << 6);
-            this.onmousebutton(this._pos.x, this._pos.y, 0, 1 << 6);
-        }
-
-        this._accumulatedWheelDeltaX = 0;
-    },
-
-    _generateWheelStepY: function () {
-
-        if (this._accumulatedWheelDeltaY < 0) {
-            this.onmousebutton(this._pos.x, this._pos.y, 1, 1 << 3);
-            this.onmousebutton(this._pos.x, this._pos.y, 0, 1 << 3);
-        } else if (this._accumulatedWheelDeltaY > 0) {
-            this.onmousebutton(this._pos.x, this._pos.y, 1, 1 << 4);
-            this.onmousebutton(this._pos.x, this._pos.y, 0, 1 << 4);
-        }
-
-        this._accumulatedWheelDeltaY = 0;
-    },
-
-    _resetWheelStepTimers: function () {
-        window.clearTimeout(this._wheelStepXTimer);
-        window.clearTimeout(this._wheelStepYTimer);
-        this._wheelStepXTimer = null;
-        this._wheelStepYTimer = null;
-    },
-
-    _handleMouseWheel: function (e) {
-        this._resetWheelStepTimers();
-
-        this._updateMousePosition(e);
-
-        var dX = e.deltaX;
-        var dY = e.deltaY;
-
-        // Pixel units unless it's non-zero.
-        // Note that if deltamode is line or page won't matter since we aren't
-        // sending the mouse wheel delta to the server anyway.
-        // The difference between pixel and line can be important however since
-        // we have a threshold that can be smaller than the line height.
-        if (e.deltaMode !== 0) {
-            dX *= WHEEL_LINE_HEIGHT;
-            dY *= WHEEL_LINE_HEIGHT;
-        }
-
-        this._accumulatedWheelDeltaX += dX;
-        this._accumulatedWheelDeltaY += dY;
-
-        // Generate a mouse wheel step event when the accumulated delta
-        // for one of the axes is large enough.
-        // Small delta events that do not pass the threshold get sent
-        // after a timeout.
-        if (Math.abs(this._accumulatedWheelDeltaX) > WHEEL_STEP) {
-            this._generateWheelStepX();
-        } else {
-            this._wheelStepXTimer =
-                window.setTimeout(this._generateWheelStepX.bind(this),
-                                  WHEEL_STEP_TIMEOUT);
-        }
-        if (Math.abs(this._accumulatedWheelDeltaY) > WHEEL_STEP) {
-            this._generateWheelStepY();
-        } else {
-            this._wheelStepYTimer =
-                window.setTimeout(this._generateWheelStepY.bind(this),
-                                  WHEEL_STEP_TIMEOUT);
-        }
-
-        stopEvent(e);
-    },
-
-    _handleMouseMove: function (e) {
-        this._updateMousePosition(e);
-        this.onmousemove(this._pos.x, this._pos.y);
-        stopEvent(e);
-    },
-
-    _handleMouseDisable: function (e) {
-        /*
-         * Stop propagation if inside canvas area
-         * Note: This is only needed for the 'click' event as it fails
-         *       to fire properly for the target element so we have
-         *       to listen on the document element instead.
-         */
-        if (e.target == this._target) {
-            stopEvent(e);
-        }
-    },
-
-    // Update coordinates relative to target
-    _updateMousePosition: function(e) {
-        e = getPointerEvent(e);
-        var bounds = this._target.getBoundingClientRect();
-        var x, y;
-        // Clip to target bounds
-        if (e.clientX < bounds.left) {
-            x = 0;
-        } else if (e.clientX >= bounds.right) {
-            x = bounds.width - 1;
-        } else {
-            x = e.clientX - bounds.left;
-        }
-        if (e.clientY < bounds.top) {
-            y = 0;
-        } else if (e.clientY >= bounds.bottom) {
-            y = bounds.height - 1;
-        } else {
-            y = e.clientY - bounds.top;
-        }
-        this._pos = {x:x, y:y};
-    },
-
-    // ===== PUBLIC METHODS =====
-
-    grab: function () {
-        var c = this._target;
-
-        if (isTouchDevice) {
-            c.addEventListener('touchstart', this._eventHandlers.mousedown);
-            c.addEventListener('touchend', this._eventHandlers.mouseup);
-            c.addEventListener('touchmove', this._eventHandlers.mousemove);
-        }
-        c.addEventListener('mousedown', this._eventHandlers.mousedown);
-        c.addEventListener('mouseup', this._eventHandlers.mouseup);
-        c.addEventListener('mousemove', this._eventHandlers.mousemove);
-        c.addEventListener('wheel', this._eventHandlers.mousewheel);
-
-        /* Prevent middle-click pasting (see above for why we bind to document) */
-        document.addEventListener('click', this._eventHandlers.mousedisable);
-
-        /* preventDefault() on mousedown doesn't stop this event for some
-           reason so we have to explicitly block it */
-        c.addEventListener('contextmenu', this._eventHandlers.mousedisable);
-    },
-
-    ungrab: function () {
-        var c = this._target;
-
-        this._resetWheelStepTimers();
-
-        if (isTouchDevice) {
-            c.removeEventListener('touchstart', this._eventHandlers.mousedown);
-            c.removeEventListener('touchend', this._eventHandlers.mouseup);
-            c.removeEventListener('touchmove', this._eventHandlers.mousemove);
-        }
-        c.removeEventListener('mousedown', this._eventHandlers.mousedown);
-        c.removeEventListener('mouseup', this._eventHandlers.mouseup);
-        c.removeEventListener('mousemove', this._eventHandlers.mousemove);
-        c.removeEventListener('wheel', this._eventHandlers.mousewheel);
-
-        document.removeEventListener('click', this._eventHandlers.mousedisable);
-
-        c.removeEventListener('contextmenu', this._eventHandlers.mousedisable);
-    }
-};

core/input/util.js

@@ -6,7 +6,7 @@ import DOMKeyTable from "./domkeytable.js";
 import * as browser from "../util/browser.js";
 
 // Get 'KeyboardEvent.code', handling legacy browsers
-export function getKeycode(evt){
+export function getKeycode(evt) {
     // Are we getting proper key identifiers?
     // (unfortunately Firefox and Chrome are crappy here and gives
     // us an empty string on some platforms, rather than leaving it
@@ -22,10 +22,9 @@ export function getKeycode(evt){
     }
 
     // The de-facto standard is to use Windows Virtual-Key codes
-    // in the 'keyCode' field for non-printable characters. However
-    // Webkit sets it to the same as charCode in 'keypress' events.
-    if ((evt.type !== 'keypress') && (evt.keyCode in vkeys)) {
-        var code = vkeys[evt.keyCode];
+    // in the 'keyCode' field for non-printable characters
+    if (evt.keyCode in vkeys) {
+        let code = vkeys[evt.keyCode];
 
         // macOS has messed up this code for some reason
         if (browser.isMac() && (code === 'ContextMenu')) {
@@ -69,29 +68,11 @@ export function getKeycode(evt){
 export function getKey(evt) {
     // Are we getting a proper key value?
     if (evt.key !== undefined) {
-        // IE and Edge use some ancient version of the spec
-        // https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/8860571/
-        switch (evt.key) {
-            case 'Spacebar': return ' ';
-            case 'Esc': return 'Escape';
-            case 'Scroll': return 'ScrollLock';
-            case 'Win': return 'Meta';
-            case 'Apps': return 'ContextMenu';
-            case 'Up': return 'ArrowUp';
-            case 'Left': return 'ArrowLeft';
-            case 'Right': return 'ArrowRight';
-            case 'Down': return 'ArrowDown';
-            case 'Del': return 'Delete';
-            case 'Divide': return '/';
-            case 'Multiply': return '*';
-            case 'Subtract': return '-';
-            case 'Add': return '+';
-            case 'Decimal': return evt.char;
-        }
-
         // Mozilla isn't fully in sync with the spec yet
         switch (evt.key) {
             case 'OS': return 'Meta';
+            case 'LaunchMyComputer': return 'LaunchApplication1';
+            case 'LaunchCalculator': return 'LaunchApplication2';
         }
 
         // iOS leaks some OS names
@@ -103,15 +84,16 @@ export function getKey(evt) {
             case 'UIKeyInputEscape': return 'Escape';
         }
 
-        // IE and Edge have broken handling of AltGraph so we cannot
-        // trust them for printable characters
-        if ((evt.key.length !== 1) || (!browser.isIE() && !browser.isEdge())) {
-            return evt.key;
+        // Broken behaviour in Chrome
+        if ((evt.key === '\x00') && (evt.code === 'NumpadDecimal')) {
+            return 'Delete';
         }
+
+        return evt.key;
     }
 
     // Try to deduce it based on the physical key
-    var code = getKeycode(evt);
+    const code = getKeycode(evt);
     if (code in fixedkeys) {
         return fixedkeys[code];
     }
@@ -126,8 +108,8 @@ export function getKey(evt) {
 }
 
 // Get the most reliable keysym value we can get from a key event
-export function getKeysym(evt){
-    var key = getKey(evt);
+export function getKeysym(evt) {
+    const key = getKey(evt);
 
     if (key === 'Unidentified') {
         return null;
@@ -135,30 +117,72 @@ export function getKeysym(evt){
 
     // First look up special keys
     if (key in DOMKeyTable) {
-        var location = evt.location;
+        let location = evt.location;
 
         // Safari screws up location for the right cmd key
         if ((key === 'Meta') && (location === 0)) {
             location = 2;
         }
 
+        // And for Clear
+        if ((key === 'Clear') && (location === 3)) {
+            let code = getKeycode(evt);
+            if (code === 'NumLock') {
+                location = 0;
+            }
+        }
+
         if ((location === undefined) || (location > 3)) {
             location = 0;
         }
 
+        // The original Meta key now gets confused with the Windows key
+        // https://bugs.chromium.org/p/chromium/issues/detail?id=1020141
+        // https://bugzilla.mozilla.org/show_bug.cgi?id=1232918
+        if (key === 'Meta') {
+            let code = getKeycode(evt);
+            if (code === 'AltLeft') {
+                return KeyTable.XK_Meta_L;
+            } else if (code === 'AltRight') {
+                return KeyTable.XK_Meta_R;
+            }
+        }
+
+        // macOS has Clear instead of NumLock, but the remote system is
+        // probably not macOS, so lying here is probably best...
+        if (key === 'Clear') {
+            let code = getKeycode(evt);
+            if (code === 'NumLock') {
+                return KeyTable.XK_Num_Lock;
+            }
+        }
+
+        // Windows sends alternating symbols for some keys when using a
+        // Japanese layout. We have no way of synchronising with the IM
+        // running on the remote system, so we send some combined keysym
+        // instead and hope for the best.
+        if (browser.isWindows()) {
+            switch (key) {
+                case 'Zenkaku':
+                case 'Hankaku':
+                    return KeyTable.XK_Zenkaku_Hankaku;
+                case 'Romaji':
+                case 'KanaMode':
+                    return KeyTable.XK_Romaji;
+            }
+        }
+
         return DOMKeyTable[key][location];
     }
 
     // Now we need to look at the Unicode symbol instead
 
-    var codepoint;
-
     // Special key? (FIXME: Should have been caught earlier)
     if (key.length !== 1) {
         return null;
     }
 
-    codepoint = key.charCodeAt();
+    const codepoint = key.charCodeAt();
     if (codepoint) {
         return keysyms.lookup(codepoint);
     }

core/input/vkeys.js

@@ -1,6 +1,6 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2017 Pierre Ossman for Cendio AB
+ * Copyright (C) 2018 The noVNC Authors
  * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
  */
 

core/input/xtscancodes.js

@@ -1,8 +1,8 @@
 /*
- * This file is auto-generated from keymaps.csv on 2017-05-31 16:20
- * Database checksum sha256(92fd165507f2a3b8c5b3fa56e425d45788dbcb98cf067a307527d91ce22cab94)
+ * This file is auto-generated from keymaps.csv
+ * Database checksum sha256(76d68c10e97d37fe2ea459e210125ae41796253fb217e900bf2983ade13a7920)
  * To re-generate, run:
- *   keymap-gen --lang=js code-map keymaps.csv html atset1
+ *   keymap-gen code-map --lang=js keymaps.csv html atset1
 */
 export default {
   "Again": 0xe005, /* html:Again (Again) -> linux:129 (KEY_AGAIN) -> atset1:57349 */
@@ -111,6 +111,8 @@ export default {
   "KeyX": 0x2d, /* html:KeyX (KeyX) -> linux:45 (KEY_X) -> atset1:45 */
   "KeyY": 0x15, /* html:KeyY (KeyY) -> linux:21 (KEY_Y) -> atset1:21 */
   "KeyZ": 0x2c, /* html:KeyZ (KeyZ) -> linux:44 (KEY_Z) -> atset1:44 */
+  "Lang1": 0x72, /* html:Lang1 (Lang1) -> linux:122 (KEY_HANGEUL) -> atset1:114 */
+  "Lang2": 0x71, /* html:Lang2 (Lang2) -> linux:123 (KEY_HANJA) -> atset1:113 */
   "Lang3": 0x78, /* html:Lang3 (Lang3) -> linux:90 (KEY_KATAKANA) -> atset1:120 */
   "Lang4": 0x77, /* html:Lang4 (Lang4) -> linux:91 (KEY_HIRAGANA) -> atset1:119 */
   "Lang5": 0x76, /* html:Lang5 (Lang5) -> linux:85 (KEY_ZENKAKUHANKAKU) -> atset1:118 */

core/ra2.js

@@ -0,0 +1,567 @@
+import Base64 from './base64.js';
+import { encodeUTF8 } from './util/strings.js';
+import EventTargetMixin from './util/eventtarget.js';
+
+export class AESEAXCipher {
+    constructor() {
+        this._rawKey = null;
+        this._ctrKey = null;
+        this._cbcKey = null;
+        this._zeroBlock = new Uint8Array(16);
+        this._prefixBlock0 = this._zeroBlock;
+        this._prefixBlock1 = new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]);
+        this._prefixBlock2 = new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2]);
+    }
+
+    async _encryptBlock(block) {
+        const encrypted = await window.crypto.subtle.encrypt({
+            name: "AES-CBC",
+            iv: this._zeroBlock,
+        }, this._cbcKey, block);
+        return new Uint8Array(encrypted).slice(0, 16);
+    }
+
+    async _initCMAC() {
+        const k1 = await this._encryptBlock(this._zeroBlock);
+        const k2 = new Uint8Array(16);
+        const v = k1[0] >>> 6;
+        for (let i = 0; i < 15; i++) {
+            k2[i] = (k1[i + 1] >> 6) | (k1[i] << 2);
+            k1[i] = (k1[i + 1] >> 7) | (k1[i] << 1);
+        }
+        const lut = [0x0, 0x87, 0x0e, 0x89];
+        k2[14] ^= v >>> 1;
+        k2[15] = (k1[15] << 2) ^ lut[v];
+        k1[15] = (k1[15] << 1) ^ lut[v >> 1];
+        this._k1 = k1;
+        this._k2 = k2;
+    }
+
+    async _encryptCTR(data, counter) {
+        const encrypted = await window.crypto.subtle.encrypt({
+            "name": "AES-CTR",
+            counter: counter,
+            length: 128
+        }, this._ctrKey, data);
+        return new Uint8Array(encrypted);
+    }
+
+    async _decryptCTR(data, counter) {
+        const decrypted = await window.crypto.subtle.decrypt({
+            "name": "AES-CTR",
+            counter: counter,
+            length: 128
+        }, this._ctrKey, data);
+        return new Uint8Array(decrypted);
+    }
+
+    async _computeCMAC(data, prefixBlock) {
+        if (prefixBlock.length !== 16) {
+            return null;
+        }
+        const n = Math.floor(data.length / 16);
+        const m = Math.ceil(data.length / 16);
+        const r = data.length - n * 16;
+        const cbcData = new Uint8Array((m + 1) * 16);
+        cbcData.set(prefixBlock);
+        cbcData.set(data, 16);
+        if (r === 0) {
+            for (let i = 0; i < 16; i++) {
+                cbcData[n * 16 + i] ^= this._k1[i];
+            }
+        } else {
+            cbcData[(n + 1) * 16 + r] = 0x80;
+            for (let i = 0; i < 16; i++) {
+                cbcData[(n + 1) * 16 + i] ^= this._k2[i];
+            }
+        }
+        let cbcEncrypted = await window.crypto.subtle.encrypt({
+            name: "AES-CBC",
+            iv: this._zeroBlock,
+        }, this._cbcKey, cbcData);
+
+        cbcEncrypted = new Uint8Array(cbcEncrypted);
+        const mac = cbcEncrypted.slice(cbcEncrypted.length - 32, cbcEncrypted.length - 16);
+        return mac;
+    }
+
+    async setKey(key) {
+        this._rawKey = key;
+        this._ctrKey = await window.crypto.subtle.importKey(
+            "raw", key, {"name": "AES-CTR"}, false, ["encrypt", "decrypt"]);
+        this._cbcKey = await window.crypto.subtle.importKey(
+            "raw", key, {"name": "AES-CBC"}, false, ["encrypt", "decrypt"]);
+        await this._initCMAC();
+    }
+
+    async encrypt(message, associatedData, nonce) {
+        const nCMAC = await this._computeCMAC(nonce, this._prefixBlock0);
+        const encrypted = await this._encryptCTR(message, nCMAC);
+        const adCMAC = await this._computeCMAC(associatedData, this._prefixBlock1);
+        const mac = await this._computeCMAC(encrypted, this._prefixBlock2);
+        for (let i = 0; i < 16; i++) {
+            mac[i] ^= nCMAC[i] ^ adCMAC[i];
+        }
+        const res = new Uint8Array(16 + encrypted.length);
+        res.set(encrypted);
+        res.set(mac, encrypted.length);
+        return res;
+    }
+
+    async decrypt(encrypted, associatedData, nonce, mac) {
+        const nCMAC = await this._computeCMAC(nonce, this._prefixBlock0);
+        const adCMAC = await this._computeCMAC(associatedData, this._prefixBlock1);
+        const computedMac = await this._computeCMAC(encrypted, this._prefixBlock2);
+        for (let i = 0; i < 16; i++) {
+            computedMac[i] ^= nCMAC[i] ^ adCMAC[i];
+        }
+        if (computedMac.length !== mac.length) {
+            return null;
+        }
+        for (let i = 0; i < mac.length; i++) {
+            if (computedMac[i] !== mac[i]) {
+                return null;
+            }
+        }
+        const res = await this._decryptCTR(encrypted, nCMAC);
+        return res;
+    }
+}
+
+export class RA2Cipher {
+    constructor() {
+        this._cipher = new AESEAXCipher();
+        this._counter = new Uint8Array(16);
+    }
+
+    async setKey(key) {
+        await this._cipher.setKey(key);
+    }
+
+    async makeMessage(message) {
+        const ad = new Uint8Array([(message.length & 0xff00) >>> 8, message.length & 0xff]);
+        const encrypted = await this._cipher.encrypt(message, ad, this._counter);
+        for (let i = 0; i < 16 && this._counter[i]++ === 255; i++);
+        const res = new Uint8Array(message.length + 2 + 16);
+        res.set(ad);
+        res.set(encrypted, 2);
+        return res;
+    }
+
+    async receiveMessage(length, encrypted, mac) {
+        const ad = new Uint8Array([(length & 0xff00) >>> 8, length & 0xff]);
+        const res = await this._cipher.decrypt(encrypted, ad, this._counter, mac);
+        for (let i = 0; i < 16 && this._counter[i]++ === 255; i++);
+        return res;
+    }
+}
+
+export class RSACipher {
+    constructor(keyLength) {
+        this._key = null;
+        this._keyLength = keyLength;
+        this._keyBytes = Math.ceil(keyLength / 8);
+        this._n = null;
+        this._e = null;
+        this._d = null;
+        this._nBigInt = null;
+        this._eBigInt = null;
+        this._dBigInt = null;
+    }
+
+    _base64urlDecode(data) {
+        data = data.replace(/-/g, "+").replace(/_/g, "/");
+        data = data.padEnd(Math.ceil(data.length / 4) * 4, "=");
+        return Base64.decode(data);
+    }
+
+    _u8ArrayToBigInt(arr) {
+        let hex = '0x';
+        for (let i = 0; i < arr.length; i++) {
+            hex += arr[i].toString(16).padStart(2, '0');
+        }
+        return BigInt(hex);
+    }
+
+    _padArray(arr, length) {
+        const res = new Uint8Array(length);
+        res.set(arr, length - arr.length);
+        return res;
+    }
+
+    _bigIntToU8Array(bigint, padLength=0) {
+        let hex = bigint.toString(16);
+        if (padLength === 0) {
+            padLength = Math.ceil(hex.length / 2) * 2;
+        }
+        hex = hex.padStart(padLength * 2, '0');
+        const length = hex.length / 2;
+        const arr = new Uint8Array(length);
+        for (let i = 0; i < length; i++) {
+            arr[i] = parseInt(hex.slice(i * 2, i * 2 + 2), 16);
+        }
+        return arr;
+    }
+
+    _modPow(b, e, m) {
+        if (m === 1n) {
+            return 0;
+        }
+        let r = 1n;
+        b = b % m;
+        while (e > 0) {
+            if (e % 2n === 1n) {
+                r = (r * b) % m;
+            }
+            e = e / 2n;
+            b = (b * b) % m;
+        }
+        return r;
+    }
+
+    async generateKey() {
+        this._key = await window.crypto.subtle.generateKey(
+            {
+                name: "RSA-OAEP",
+                modulusLength: this._keyLength,
+                publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
+                hash: {name: "SHA-256"},
+            },
+            true, ["encrypt", "decrypt"]);
+        const privateKey = await window.crypto.subtle.exportKey("jwk", this._key.privateKey);
+        this._n = this._padArray(this._base64urlDecode(privateKey.n), this._keyBytes);
+        this._nBigInt = this._u8ArrayToBigInt(this._n);
+        this._e = this._padArray(this._base64urlDecode(privateKey.e), this._keyBytes);
+        this._eBigInt = this._u8ArrayToBigInt(this._e);
+        this._d = this._padArray(this._base64urlDecode(privateKey.d), this._keyBytes);
+        this._dBigInt = this._u8ArrayToBigInt(this._d);
+    }
+
+    setPublicKey(n, e) {
+        if (n.length !== this._keyBytes || e.length !== this._keyBytes) {
+            return;
+        }
+        this._n = new Uint8Array(this._keyBytes);
+        this._e = new Uint8Array(this._keyBytes);
+        this._n.set(n);
+        this._e.set(e);
+        this._nBigInt = this._u8ArrayToBigInt(this._n);
+        this._eBigInt = this._u8ArrayToBigInt(this._e);
+    }
+
+    encrypt(message) {
+        if (message.length > this._keyBytes - 11) {
+            return null;
+        }
+        const ps = new Uint8Array(this._keyBytes - message.length - 3);
+        window.crypto.getRandomValues(ps);
+        for (let i = 0; i < ps.length; i++) {
+            ps[i] = Math.floor(ps[i] * 254 / 255 + 1);
+        }
+        const em = new Uint8Array(this._keyBytes);
+        em[1] = 0x02;
+        em.set(ps, 2);
+        em.set(message, ps.length + 3);
+        const emBigInt = this._u8ArrayToBigInt(em);
+        const c = this._modPow(emBigInt, this._eBigInt, this._nBigInt);
+        return this._bigIntToU8Array(c, this._keyBytes);
+    }
+
+    decrypt(message) {
+        if (message.length !== this._keyBytes) {
+            return null;
+        }
+        const msgBigInt = this._u8ArrayToBigInt(message);
+        const emBigInt = this._modPow(msgBigInt, this._dBigInt, this._nBigInt);
+        const em = this._bigIntToU8Array(emBigInt, this._keyBytes);
+        if (em[0] !== 0x00 || em[1] !== 0x02) {
+            return null;
+        }
+        let i = 2;
+        for (; i < em.length; i++) {
+            if (em[i] === 0x00) {
+                break;
+            }
+        }
+        if (i === em.length) {
+            return null;
+        }
+        return em.slice(i + 1, em.length);
+    }
+
+    get keyLength() {
+        return this._keyLength;
+    }
+
+    get n() {
+        return this._n;
+    }
+
+    get e() {
+        return this._e;
+    }
+
+    get d() {
+        return this._d;
+    }
+}
+
+export default class RSAAESAuthenticationState extends EventTargetMixin {
+    constructor(sock, getCredentials) {
+        super();
+        this._hasStarted = false;
+        this._checkSock = null;
+        this._checkCredentials = null;
+        this._approveServerResolve = null;
+        this._sockReject = null;
+        this._credentialsReject = null;
+        this._approveServerReject = null;
+        this._sock = sock;
+        this._getCredentials = getCredentials;
+    }
+
+    _waitSockAsync(len) {
+        return new Promise((resolve, reject) => {
+            const hasData = () => !this._sock.rQwait('RA2', len);
+            if (hasData()) {
+                resolve();
+            } else {
+                this._checkSock = () => {
+                    if (hasData()) {
+                        resolve();
+                        this._checkSock = null;
+                        this._sockReject = null;
+                    }
+                };
+                this._sockReject = reject;
+            }
+        });
+    }
+
+    _waitApproveKeyAsync() {
+        return new Promise((resolve, reject) => {
+            this._approveServerResolve = resolve;
+            this._approveServerReject = reject;
+        });
+    }
+
+    _waitCredentialsAsync(subtype) {
+        const hasCredentials = () => {
+            if (subtype === 1 && this._getCredentials().username !== undefined &&
+                this._getCredentials().password !== undefined) {
+                return true;
+            } else if (subtype === 2 && this._getCredentials().password !== undefined) {
+                return true;
+            }
+            return false;
+        };
+        return new Promise((resolve, reject) => {
+            if (hasCredentials()) {
+                resolve();
+            } else {
+                this._checkCredentials = () => {
+                    if (hasCredentials()) {
+                        resolve();
+                        this._checkCredentials = null;
+                        this._credentialsReject = null;
+                    }
+                };
+                this._credentialsReject = reject;
+            }
+        });
+    }
+
+    checkInternalEvents() {
+        if (this._checkSock !== null) {
+            this._checkSock();
+        }
+        if (this._checkCredentials !== null) {
+            this._checkCredentials();
+        }
+    }
+
+    approveServer() {
+        if (this._approveServerResolve !== null) {
+            this._approveServerResolve();
+            this._approveServerResolve = null;
+        }
+    }
+
+    disconnect() {
+        if (this._sockReject !== null) {
+            this._sockReject(new Error("disconnect normally"));
+            this._sockReject = null;
+        }
+        if (this._credentialsReject !== null) {
+            this._credentialsReject(new Error("disconnect normally"));
+            this._credentialsReject = null;
+        }
+        if (this._approveServerReject !== null) {
+            this._approveServerReject(new Error("disconnect normally"));
+            this._approveServerReject = null;
+        }
+    }
+
+    async negotiateRA2neAuthAsync() {
+        this._hasStarted = true;
+        // 1: Receive server public key
+        await this._waitSockAsync(4);
+        const serverKeyLengthBuffer = this._sock.rQslice(0, 4);
+        const serverKeyLength = this._sock.rQshift32();
+        if (serverKeyLength < 1024) {
+            throw new Error("RA2: server public key is too short: " + serverKeyLength);
+        } else if (serverKeyLength > 8192) {
+            throw new Error("RA2: server public key is too long: " + serverKeyLength);
+        }
+        const serverKeyBytes = Math.ceil(serverKeyLength / 8);
+        await this._waitSockAsync(serverKeyBytes * 2);
+        const serverN = this._sock.rQshiftBytes(serverKeyBytes);
+        const serverE = this._sock.rQshiftBytes(serverKeyBytes);
+        const serverRSACipher = new RSACipher(serverKeyLength);
+        serverRSACipher.setPublicKey(serverN, serverE);
+        const serverPublickey = new Uint8Array(4 + serverKeyBytes * 2);
+        serverPublickey.set(serverKeyLengthBuffer);
+        serverPublickey.set(serverN, 4);
+        serverPublickey.set(serverE, 4 + serverKeyBytes);
+
+        // verify server public key
+        this.dispatchEvent(new CustomEvent("serververification", {
+            detail: { type: "RSA", publickey: serverPublickey }
+        }));
+        await this._waitApproveKeyAsync();
+
+        // 2: Send client public key
+        const clientKeyLength = 2048;
+        const clientKeyBytes = Math.ceil(clientKeyLength / 8);
+        const clientRSACipher = new RSACipher(clientKeyLength);
+        await clientRSACipher.generateKey();
+        const clientN = clientRSACipher.n;
+        const clientE = clientRSACipher.e;
+        const clientPublicKey = new Uint8Array(4 + clientKeyBytes * 2);
+        clientPublicKey[0] = (clientKeyLength & 0xff000000) >>> 24;
+        clientPublicKey[1] = (clientKeyLength & 0xff0000) >>> 16;
+        clientPublicKey[2] = (clientKeyLength & 0xff00) >>> 8;
+        clientPublicKey[3] = clientKeyLength & 0xff;
+        clientPublicKey.set(clientN, 4);
+        clientPublicKey.set(clientE, 4 + clientKeyBytes);
+        this._sock.send(clientPublicKey);
+
+        // 3: Send client random
+        const clientRandom = new Uint8Array(16);
+        window.crypto.getRandomValues(clientRandom);
+        const clientEncryptedRandom = serverRSACipher.encrypt(clientRandom);
+        const clientRandomMessage = new Uint8Array(2 + serverKeyBytes);
+        clientRandomMessage[0] = (serverKeyBytes & 0xff00) >>> 8;
+        clientRandomMessage[1] = serverKeyBytes & 0xff;
+        clientRandomMessage.set(clientEncryptedRandom, 2);
+        this._sock.send(clientRandomMessage);
+
+        // 4: Receive server random
+        await this._waitSockAsync(2);
+        if (this._sock.rQshift16() !== clientKeyBytes) {
+            throw new Error("RA2: wrong encrypted message length");
+        }
+        const serverEncryptedRandom = this._sock.rQshiftBytes(clientKeyBytes);
+        const serverRandom = clientRSACipher.decrypt(serverEncryptedRandom);
+        if (serverRandom === null || serverRandom.length !== 16) {
+            throw new Error("RA2: corrupted server encrypted random");
+        }
+
+        // 5: Compute session keys and set ciphers
+        let clientSessionKey = new Uint8Array(32);
+        let serverSessionKey = new Uint8Array(32);
+        clientSessionKey.set(serverRandom);
+        clientSessionKey.set(clientRandom, 16);
+        serverSessionKey.set(clientRandom);
+        serverSessionKey.set(serverRandom, 16);
+        clientSessionKey = await window.crypto.subtle.digest("SHA-1", clientSessionKey);
+        clientSessionKey = new Uint8Array(clientSessionKey).slice(0, 16);
+        serverSessionKey = await window.crypto.subtle.digest("SHA-1", serverSessionKey);
+        serverSessionKey = new Uint8Array(serverSessionKey).slice(0, 16);
+        const clientCipher = new RA2Cipher();
+        await clientCipher.setKey(clientSessionKey);
+        const serverCipher = new RA2Cipher();
+        await serverCipher.setKey(serverSessionKey);
+
+        // 6: Compute and exchange hashes
+        let serverHash = new Uint8Array(8 + serverKeyBytes * 2 + clientKeyBytes * 2);
+        let clientHash = new Uint8Array(8 + serverKeyBytes * 2 + clientKeyBytes * 2);
+        serverHash.set(serverPublickey);
+        serverHash.set(clientPublicKey, 4 + serverKeyBytes * 2);
+        clientHash.set(clientPublicKey);
+        clientHash.set(serverPublickey, 4 + clientKeyBytes * 2);
+        serverHash = await window.crypto.subtle.digest("SHA-1", serverHash);
+        clientHash = await window.crypto.subtle.digest("SHA-1", clientHash);
+        serverHash = new Uint8Array(serverHash);
+        clientHash = new Uint8Array(clientHash);
+        this._sock.send(await clientCipher.makeMessage(clientHash));
+        await this._waitSockAsync(2 + 20 + 16);
+        if (this._sock.rQshift16() !== 20) {
+            throw new Error("RA2: wrong server hash");
+        }
+        const serverHashReceived = await serverCipher.receiveMessage(
+            20, this._sock.rQshiftBytes(20), this._sock.rQshiftBytes(16));
+        if (serverHashReceived === null) {
+            throw new Error("RA2: failed to authenticate the message");
+        }
+        for (let i = 0; i < 20; i++) {
+            if (serverHashReceived[i] !== serverHash[i]) {
+                throw new Error("RA2: wrong server hash");
+            }
+        }
+
+        // 7: Receive subtype
+        await this._waitSockAsync(2 + 1 + 16);
+        if (this._sock.rQshift16() !== 1) {
+            throw new Error("RA2: wrong subtype");
+        }
+        let subtype = (await serverCipher.receiveMessage(
+            1, this._sock.rQshiftBytes(1), this._sock.rQshiftBytes(16)));
+        if (subtype === null) {
+            throw new Error("RA2: failed to authenticate the message");
+        }
+        subtype = subtype[0];
+        if (subtype === 1) {
+            if (this._getCredentials().username === undefined ||
+                this._getCredentials().password === undefined) {
+                this.dispatchEvent(new CustomEvent(
+                    "credentialsrequired",
+                    { detail: { types: ["username", "password"] } }));
+            }
+        } else if (subtype === 2) {
+            if (this._getCredentials().password === undefined) {
+                this.dispatchEvent(new CustomEvent(
+                    "credentialsrequired",
+                    { detail: { types: ["password"] } }));
+            }
+        } else {
+            throw new Error("RA2: wrong subtype");
+        }
+        await this._waitCredentialsAsync(subtype);
+        let username;
+        if (subtype === 1) {
+            username = encodeUTF8(this._getCredentials().username).slice(0, 255);
+        } else {
+            username = "";
+        }
+        const password = encodeUTF8(this._getCredentials().password).slice(0, 255);
+        const credentials = new Uint8Array(username.length + password.length + 2);
+        credentials[0] = username.length;
+        credentials[username.length + 1] = password.length;
+        for (let i = 0; i < username.length; i++) {
+            credentials[i + 1] = username.charCodeAt(i);
+        }
+        for (let i = 0; i < password.length; i++) {
+            credentials[username.length + 2 + i] = password.charCodeAt(i);
+        }
+        this._sock.send(await clientCipher.makeMessage(credentials));
+    }
+
+    get hasStarted() {
+        return this._hasStarted;
+    }
+
+    set hasStarted(s) {
+        this._hasStarted = s;
+    }
+}

core/util/browser.js

@@ -1,15 +1,17 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
+ * Copyright (C) 2019 The noVNC Authors
  * Licensed under MPL 2.0 (see LICENSE.txt)
  *
  * See README.md for usage and integration instructions.
+ *
+ * Browser feature support detection
  */
 
 import * as Log from './logging.js';
 
 // Touch detection
-export var isTouchDevice = ('ontouchstart' in document.documentElement) ||
+export let isTouchDevice = ('ontouchstart' in document.documentElement) ||
                                  // requried for Chrome debugger
                                  (document.ontouchstart !== undefined) ||
                                  // required for MS Surface
@@ -20,50 +22,131 @@ window.addEventListener('touchstart', function onFirstTouch() {
     window.removeEventListener('touchstart', onFirstTouch, false);
 }, false);
 
-var _cursor_uris_supported = null;
 
-export function supportsCursorURIs () {
-    if (_cursor_uris_supported === null) {
-        try {
-            var target = document.createElement('canvas');
-            target.style.cursor = 'url("data:image/x-icon;base64,AAACAAEACAgAAAIAAgA4AQAAFgAAACgAAAAIAAAAEAAAAAEAIAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAD/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////AAAAAAAAAAAAAAAAAAAAAA==") 2 2, default';
+// The goal is to find a certain physical width, the devicePixelRatio
+// brings us a bit closer but is not optimal.
+export let dragThreshold = 10 * (window.devicePixelRatio || 1);
 
-            if (target.style.cursor) {
-                Log.Info("Data URI scheme cursor supported");
-                _cursor_uris_supported = true;
-            } else {
-                Log.Warn("Data URI scheme cursor not supported");
-                _cursor_uris_supported = false;
-            }
-        } catch (exc) {
-            Log.Error("Data URI scheme cursor test exception: " + exc);
-            _cursor_uris_supported = false;
-        }
+let _supportsCursorURIs = false;
+
+try {
+    const target = document.createElement('canvas');
+    target.style.cursor = 'url("data:image/x-icon;base64,AAACAAEACAgAAAIAAgA4AQAAFgAAACgAAAAIAAAAEAAAAAEAIAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAD/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////AAAAAAAAAAAAAAAAAAAAAA==") 2 2, default';
+
+    if (target.style.cursor.indexOf("url") === 0) {
+        Log.Info("Data URI scheme cursor supported");
+        _supportsCursorURIs = true;
+    } else {
+        Log.Warn("Data URI scheme cursor not supported");
     }
+} catch (exc) {
+    Log.Error("Data URI scheme cursor test exception: " + exc);
+}
 
-    return _cursor_uris_supported;
-};
+export const supportsCursorURIs = _supportsCursorURIs;
+
+let _hasScrollbarGutter = true;
+try {
+    // Create invisible container
+    const container = document.createElement('div');
+    container.style.visibility = 'hidden';
+    container.style.overflow = 'scroll'; // forcing scrollbars
+    document.body.appendChild(container);
+
+    // Create a div and place it in the container
+    const child = document.createElement('div');
+    container.appendChild(child);
+
+    // Calculate the difference between the container's full width
+    // and the child's width - the difference is the scrollbars
+    const scrollbarWidth = (container.offsetWidth - child.offsetWidth);
+
+    // Clean up
+    container.parentNode.removeChild(container);
+
+    _hasScrollbarGutter = scrollbarWidth != 0;
+} catch (exc) {
+    Log.Error("Scrollbar test exception: " + exc);
+}
+export const hasScrollbarGutter = _hasScrollbarGutter;
+
+/*
+ * The functions for detection of platforms and browsers below are exported
+ * but the use of these should be minimized as much as possible.
+ *
+ * It's better to use feature detection than platform detection.
+ */
+
+/* OS */
 
 export function isMac() {
-    return navigator && !!(/mac/i).exec(navigator.platform);
-}
-
-export function isIE() {
-    return navigator && !!(/trident/i).exec(navigator.userAgent);
-}
-
-export function isEdge() {
-    return navigator && !!(/edge/i).exec(navigator.userAgent);
+    return !!(/mac/i).exec(navigator.platform);
 }
 
 export function isWindows() {
-    return navigator && !!(/win/i).exec(navigator.platform);
+    return !!(/win/i).exec(navigator.platform);
 }
 
 export function isIOS() {
-    return navigator &&
-           (!!(/ipad/i).exec(navigator.platform) ||
+    return (!!(/ipad/i).exec(navigator.platform) ||
             !!(/iphone/i).exec(navigator.platform) ||
             !!(/ipod/i).exec(navigator.platform));
 }
 
+export function isAndroid() {
+    /* Android sets navigator.platform to Linux :/ */
+    return !!navigator.userAgent.match('Android ');
+}
+
+export function isChromeOS() {
+    /* ChromeOS sets navigator.platform to Linux :/ */
+    return !!navigator.userAgent.match(' CrOS ');
+}
+
+/* Browser */
+
+export function isSafari() {
+    return !!navigator.userAgent.match('Safari/...') &&
+           !navigator.userAgent.match('Chrome/...') &&
+           !navigator.userAgent.match('Chromium/...') &&
+           !navigator.userAgent.match('Epiphany/...');
+}
+
+export function isFirefox() {
+    return !!navigator.userAgent.match('Firefox/...') &&
+           !navigator.userAgent.match('Seamonkey/...');
+}
+
+export function isChrome() {
+    return !!navigator.userAgent.match('Chrome/...') &&
+           !navigator.userAgent.match('Chromium/...') &&
+           !navigator.userAgent.match('Edg/...') &&
+           !navigator.userAgent.match('OPR/...');
+}
+
+export function isChromium() {
+    return !!navigator.userAgent.match('Chromium/...');
+}
+
+export function isOpera() {
+    return !!navigator.userAgent.match('OPR/...');
+}
+
+export function isEdge() {
+    return !!navigator.userAgent.match('Edg/...');
+}
+
+/* Engine */
+
+export function isGecko() {
+    return !!navigator.userAgent.match('Gecko/...');
+}
+
+export function isWebKit() {
+    return !!navigator.userAgent.match('AppleWebKit/...') &&
+           !navigator.userAgent.match('Chrome/...');
+}
+
+export function isBlink() {
+    return !!navigator.userAgent.match('Chrome/...');
+}

core/util/cursor.js

@@ -0,0 +1,247 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
+ */
+
+import { supportsCursorURIs, isTouchDevice } from './browser.js';
+
+const useFallback = !supportsCursorURIs || isTouchDevice;
+
+export default class Cursor {
+    constructor() {
+        this._target = null;
+
+        this._canvas = document.createElement('canvas');
+
+        if (useFallback) {
+            this._canvas.style.position = 'fixed';
+            this._canvas.style.zIndex = '65535';
+            this._canvas.style.pointerEvents = 'none';
+            // Safari on iOS can select the cursor image
+            // https://bugs.webkit.org/show_bug.cgi?id=249223
+            this._canvas.style.userSelect = 'none';
+            this._canvas.style.WebkitUserSelect = 'none';
+            // Can't use "display" because of Firefox bug #1445997
+            this._canvas.style.visibility = 'hidden';
+        }
+
+        this._position = { x: 0, y: 0 };
+        this._hotSpot = { x: 0, y: 0 };
+
+        this._eventHandlers = {
+            'mouseover': this._handleMouseOver.bind(this),
+            'mouseleave': this._handleMouseLeave.bind(this),
+            'mousemove': this._handleMouseMove.bind(this),
+            'mouseup': this._handleMouseUp.bind(this),
+        };
+    }
+
+    attach(target) {
+        if (this._target) {
+            this.detach();
+        }
+
+        this._target = target;
+
+        if (useFallback) {
+            document.body.appendChild(this._canvas);
+
+            const options = { capture: true, passive: true };
+            this._target.addEventListener('mouseover', this._eventHandlers.mouseover, options);
+            this._target.addEventListener('mouseleave', this._eventHandlers.mouseleave, options);
+            this._target.addEventListener('mousemove', this._eventHandlers.mousemove, options);
+            this._target.addEventListener('mouseup', this._eventHandlers.mouseup, options);
+        }
+
+        this.clear();
+    }
+
+    detach() {
+        if (!this._target) {
+            return;
+        }
+
+        if (useFallback) {
+            const options = { capture: true, passive: true };
+            this._target.removeEventListener('mouseover', this._eventHandlers.mouseover, options);
+            this._target.removeEventListener('mouseleave', this._eventHandlers.mouseleave, options);
+            this._target.removeEventListener('mousemove', this._eventHandlers.mousemove, options);
+            this._target.removeEventListener('mouseup', this._eventHandlers.mouseup, options);
+
+            document.body.removeChild(this._canvas);
+        }
+
+        this._target = null;
+    }
+
+    change(rgba, hotx, hoty, w, h) {
+        if ((w === 0) || (h === 0)) {
+            this.clear();
+            return;
+        }
+
+        this._position.x = this._position.x + this._hotSpot.x - hotx;
+        this._position.y = this._position.y + this._hotSpot.y - hoty;
+        this._hotSpot.x = hotx;
+        this._hotSpot.y = hoty;
+
+        let ctx = this._canvas.getContext('2d');
+
+        this._canvas.width = w;
+        this._canvas.height = h;
+
+        let img = new ImageData(new Uint8ClampedArray(rgba), w, h);
+        ctx.clearRect(0, 0, w, h);
+        ctx.putImageData(img, 0, 0);
+
+        if (useFallback) {
+            this._updatePosition();
+        } else {
+            let url = this._canvas.toDataURL();
+            this._target.style.cursor = 'url(' + url + ')' + hotx + ' ' + hoty + ', default';
+        }
+    }
+
+    clear() {
+        this._target.style.cursor = 'none';
+        this._canvas.width = 0;
+        this._canvas.height = 0;
+        this._position.x = this._position.x + this._hotSpot.x;
+        this._position.y = this._position.y + this._hotSpot.y;
+        this._hotSpot.x = 0;
+        this._hotSpot.y = 0;
+    }
+
+    // Mouse events might be emulated, this allows
+    // moving the cursor in such cases
+    move(clientX, clientY) {
+        if (!useFallback) {
+            return;
+        }
+        // clientX/clientY are relative the _visual viewport_,
+        // but our position is relative the _layout viewport_,
+        // so try to compensate when we can
+        if (window.visualViewport) {
+            this._position.x = clientX + window.visualViewport.offsetLeft;
+            this._position.y = clientY + window.visualViewport.offsetTop;
+        } else {
+            this._position.x = clientX;
+            this._position.y = clientY;
+        }
+        this._updatePosition();
+        let target = document.elementFromPoint(clientX, clientY);
+        this._updateVisibility(target);
+    }
+
+    _handleMouseOver(event) {
+        // This event could be because we're entering the target, or
+        // moving around amongst its sub elements. Let the move handler
+        // sort things out.
+        this._handleMouseMove(event);
+    }
+
+    _handleMouseLeave(event) {
+        // Check if we should show the cursor on the element we are leaving to
+        this._updateVisibility(event.relatedTarget);
+    }
+
+    _handleMouseMove(event) {
+        this._updateVisibility(event.target);
+
+        this._position.x = event.clientX - this._hotSpot.x;
+        this._position.y = event.clientY - this._hotSpot.y;
+
+        this._updatePosition();
+    }
+
+    _handleMouseUp(event) {
+        // We might get this event because of a drag operation that
+        // moved outside of the target. Check what's under the cursor
+        // now and adjust visibility based on that.
+        let target = document.elementFromPoint(event.clientX, event.clientY);
+        this._updateVisibility(target);
+
+        // Captures end with a mouseup but we can't know the event order of
+        // mouseup vs releaseCapture.
+        //
+        // In the cases when releaseCapture comes first, the code above is
+        // enough.
+        //
+        // In the cases when the mouseup comes first, we need wait for the
+        // browser to flush all events and then check again if the cursor
+        // should be visible.
+        if (this._captureIsActive()) {
+            window.setTimeout(() => {
+                // We might have detached at this point
+                if (!this._target) {
+                    return;
+                }
+                // Refresh the target from elementFromPoint since queued events
+                // might have altered the DOM
+                target = document.elementFromPoint(event.clientX,
+                                                   event.clientY);
+                this._updateVisibility(target);
+            }, 0);
+        }
+    }
+
+    _showCursor() {
+        if (this._canvas.style.visibility === 'hidden') {
+            this._canvas.style.visibility = '';
+        }
+    }
+
+    _hideCursor() {
+        if (this._canvas.style.visibility !== 'hidden') {
+            this._canvas.style.visibility = 'hidden';
+        }
+    }
+
+    // Should we currently display the cursor?
+    // (i.e. are we over the target, or a child of the target without a
+    // different cursor set)
+    _shouldShowCursor(target) {
+        if (!target) {
+            return false;
+        }
+        // Easy case
+        if (target === this._target) {
+            return true;
+        }
+        // Other part of the DOM?
+        if (!this._target.contains(target)) {
+            return false;
+        }
+        // Has the child its own cursor?
+        // FIXME: How can we tell that a sub element has an
+        //        explicit "cursor: none;"?
+        if (window.getComputedStyle(target).cursor !== 'none') {
+            return false;
+        }
+        return true;
+    }
+
+    _updateVisibility(target) {
+        // When the cursor target has capture we want to show the cursor.
+        // So, if a capture is active - look at the captured element instead.
+        if (this._captureIsActive()) {
+            target = document.captureElement;
+        }
+        if (this._shouldShowCursor(target)) {
+            this._showCursor();
+        } else {
+            this._hideCursor();
+        }
+    }
+
+    _updatePosition() {
+        this._canvas.style.left = this._position.x + "px";
+        this._canvas.style.top = this._position.y + "px";
+    }
+
+    _captureIsActive() {
+        return document.captureElement &&
+            document.documentElement.contains(document.captureElement);
+    }
+}

core/util/element.js

@@ -0,0 +1,32 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2020 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
+
+/*
+ * HTML element utility functions
+ */
+
+export function clientToElement(x, y, elem) {
+    const bounds = elem.getBoundingClientRect();
+    let pos = { x: 0, y: 0 };
+    // Clip to target bounds
+    if (x < bounds.left) {
+        pos.x = 0;
+    } else if (x >= bounds.right) {
+        pos.x = bounds.width - 1;
+    } else {
+        pos.x = x - bounds.left;
+    }
+    if (y < bounds.top) {
+        pos.y = 0;
+    } else if (y >= bounds.bottom) {
+        pos.y = bounds.height - 1;
+    } else {
+        pos.y = y - bounds.top;
+    }
+    return pos;
+}

core/util/events.js

@@ -1,6 +1,6 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
+ * Copyright (C) 2018 The noVNC Authors
  * Licensed under MPL 2.0 (see LICENSE.txt)
  *
  * See README.md for usage and integration instructions.
@@ -10,27 +10,32 @@
  * Cross-browser event and position routines
  */
 
-export function getPointerEvent (e) {
+export function getPointerEvent(e) {
     return e.changedTouches ? e.changedTouches[0] : e.touches ? e.touches[0] : e;
-};
+}
 
-export function stopEvent (e) {
+export function stopEvent(e) {
     e.stopPropagation();
     e.preventDefault();
-};
+}
 
 // Emulate Element.setCapture() when not supported
-var _captureRecursion = false;
-var _captureElem = null;
+let _captureRecursion = false;
+let _elementForUnflushedEvents = null;
+document.captureElement = null;
 function _captureProxy(e) {
     // Recursion protection as we'll see our own event
     if (_captureRecursion) return;
 
     // Clone the event as we cannot dispatch an already dispatched event
-    var newEv = new e.constructor(e.type, e);
+    const newEv = new e.constructor(e.type, e);
 
     _captureRecursion = true;
-    _captureElem.dispatchEvent(newEv);
+    if (document.captureElement) {
+        document.captureElement.dispatchEvent(newEv);
+    } else {
+        _elementForUnflushedEvents.dispatchEvent(newEv);
+    }
     _captureRecursion = false;
 
     // Avoid double events
@@ -45,94 +50,89 @@ function _captureProxy(e) {
     if (e.type === "mouseup") {
         releaseCapture();
     }
-};
+}
 
 // Follow cursor style of target element
-function _captureElemChanged() {
-    var captureElem = document.getElementById("noVNC_mouse_capture_elem");
-    captureElem.style.cursor = window.getComputedStyle(_captureElem).cursor;
-};
-var _captureObserver = new MutationObserver(_captureElemChanged);
+function _capturedElemChanged() {
+    const proxyElem = document.getElementById("noVNC_mouse_capture_elem");
+    proxyElem.style.cursor = window.getComputedStyle(document.captureElement).cursor;
+}
 
-var _captureIndex = 0;
+const _captureObserver = new MutationObserver(_capturedElemChanged);
 
-export function setCapture (elem) {
-    if (elem.setCapture) {
-
-        elem.setCapture();
-
-        // IE releases capture on 'click' events which might not trigger
-        elem.addEventListener('mouseup', releaseCapture);
+export function setCapture(target) {
+    if (target.setCapture) {
 
+        target.setCapture();
+        document.captureElement = target;
     } else {
         // Release any existing capture in case this method is
         // called multiple times without coordination
         releaseCapture();
 
-        var captureElem = document.getElementById("noVNC_mouse_capture_elem");
+        let proxyElem = document.getElementById("noVNC_mouse_capture_elem");
 
-        if (captureElem === null) {
-            captureElem = document.createElement("div");
-            captureElem.id = "noVNC_mouse_capture_elem";
-            captureElem.style.position = "fixed";
-            captureElem.style.top = "0px";
-            captureElem.style.left = "0px";
-            captureElem.style.width = "100%";
-            captureElem.style.height = "100%";
-            captureElem.style.zIndex = 10000;
-            captureElem.style.display = "none";
-            document.body.appendChild(captureElem);
+        if (proxyElem === null) {
+            proxyElem = document.createElement("div");
+            proxyElem.id = "noVNC_mouse_capture_elem";
+            proxyElem.style.position = "fixed";
+            proxyElem.style.top = "0px";
+            proxyElem.style.left = "0px";
+            proxyElem.style.width = "100%";
+            proxyElem.style.height = "100%";
+            proxyElem.style.zIndex = 10000;
+            proxyElem.style.display = "none";
+            document.body.appendChild(proxyElem);
 
             // This is to make sure callers don't get confused by having
             // our blocking element as the target
-            captureElem.addEventListener('contextmenu', _captureProxy);
+            proxyElem.addEventListener('contextmenu', _captureProxy);
 
-            captureElem.addEventListener('mousemove', _captureProxy);
-            captureElem.addEventListener('mouseup', _captureProxy);
+            proxyElem.addEventListener('mousemove', _captureProxy);
+            proxyElem.addEventListener('mouseup', _captureProxy);
         }
 
-        _captureElem = elem;
-        _captureIndex++;
+        document.captureElement = target;
 
         // Track cursor and get initial cursor
-        _captureObserver.observe(elem, {attributes:true});
-        _captureElemChanged();
+        _captureObserver.observe(target, {attributes: true});
+        _capturedElemChanged();
 
-        captureElem.style.display = "";
+        proxyElem.style.display = "";
 
         // We listen to events on window in order to keep tracking if it
         // happens to leave the viewport
         window.addEventListener('mousemove', _captureProxy);
         window.addEventListener('mouseup', _captureProxy);
     }
-};
+}
 
-export function releaseCapture () {
+export function releaseCapture() {
     if (document.releaseCapture) {
 
         document.releaseCapture();
+        document.captureElement = null;
 
     } else {
-        if (!_captureElem) {
+        if (!document.captureElement) {
             return;
         }
 
-        // There might be events already queued, so we need to wait for
-        // them to flush. E.g. contextmenu in Microsoft Edge
-        window.setTimeout(function(expected) {
-            // Only clear it if it's the expected grab (i.e. no one
-            // else has initiated a new grab)
-            if (_captureIndex === expected) {
-                _captureElem = null;
-            }
-        }, 0, _captureIndex);
+        // There might be events already queued. The event proxy needs
+        // access to the captured element for these queued events.
+        // E.g. contextmenu (right-click) in Microsoft Edge
+        //
+        // Before removing the capturedElem pointer we save it to a
+        // temporary variable that the unflushed events can use.
+        _elementForUnflushedEvents = document.captureElement;
+        document.captureElement = null;
 
         _captureObserver.disconnect();
 
-        var captureElem = document.getElementById("noVNC_mouse_capture_elem");
-        captureElem.style.display = "none";
+        const proxyElem = document.getElementById("noVNC_mouse_capture_elem");
+        proxyElem.style.display = "none";
 
         window.removeEventListener('mousemove', _captureProxy);
         window.removeEventListener('mouseup', _captureProxy);
     }
-};
+}

core/util/eventtarget.js

@@ -1,40 +1,35 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright 2017 Pierre Ossman for Cendio AB
+ * Copyright (C) 2019 The noVNC Authors
  * Licensed under MPL 2.0 (see LICENSE.txt)
  *
  * See README.md for usage and integration instructions.
  */
 
-var EventTargetMixin = {
-    _listeners: null,
+export default class EventTargetMixin {
+    constructor() {
+        this._listeners = new Map();
+    }
 
-   addEventListener: function(type, callback) {
-      if (!this._listeners) {
-         this._listeners = new Map();
-      }
-      if (!this._listeners.has(type)) {
-         this._listeners.set(type, new Set());
-      }
-      this._listeners.get(type).add(callback);
-   },
+    addEventListener(type, callback) {
+        if (!this._listeners.has(type)) {
+            this._listeners.set(type, new Set());
+        }
+        this._listeners.get(type).add(callback);
+    }
 
-   removeEventListener: function(type, callback) {
-      if (!this._listeners || !this._listeners.has(type)) {
-         return;
-      }
-      this._listeners.get(type).delete(callback);
-   },
+    removeEventListener(type, callback) {
+        if (this._listeners.has(type)) {
+            this._listeners.get(type).delete(callback);
+        }
+    }
 
-   dispatchEvent: function(event) {
-      if (!this._listeners || !this._listeners.has(event.type)) {
-         return true;
-      }
-      this._listeners.get(event.type).forEach(function (callback) {
-         callback.call(this, event);
-      }, this);
-      return !event.defaultPrevented;
-   },
-};
-
-export default EventTargetMixin;
+    dispatchEvent(event) {
+        if (!this._listeners.has(event.type)) {
+            return true;
+        }
+        this._listeners.get(event.type)
+            .forEach(callback => callback.call(this, event));
+        return !event.defaultPrevented;
+    }
+}

core/util/int.js

@@ -0,0 +1,15 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2020 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
+
+export function toUnsigned32bit(toConvert) {
+    return toConvert >>> 0;
+}
+
+export function toSigned32bit(toConvert) {
+    return toConvert | 0;
+}

core/util/logging.js

@@ -1,6 +1,6 @@
 /*
  * noVNC: HTML5 VNC client
- * Copyright (C) 2012 Joel Martin
+ * Copyright (C) 2019 The noVNC Authors
  * Licensed under MPL 2.0 (see LICENSE.txt)
  *
  * See README.md for usage and integration instructions.
@@ -10,22 +10,24 @@
  * Logging/debug routines
  */
 
-var _log_level = 'warn';
+let _logLevel = 'warn';
 
-var Debug = function (msg) {};
-var Info = function (msg) {};
-var Warn = function (msg) {};
-var Error = function (msg) {};
+let Debug = () => {};
+let Info = () => {};
+let Warn = () => {};
+let Error = () => {};
 
-export function init_logging (level) {
+export function initLogging(level) {
     if (typeof level === 'undefined') {
-        level = _log_level;
+        level = _logLevel;
     } else {
-        _log_level = level;
+        _logLevel = level;
     }
 
-    Debug = Info = Warn = Error = function (msg) {};
+    Debug = Info = Warn = Error = () => {};
+
     if (typeof window.console !== "undefined") {
+        /* eslint-disable no-console, no-fallthrough */
         switch (level) {
             case 'debug':
                 Debug = console.debug.bind(window.console);
@@ -38,14 +40,17 @@ export function init_logging (level) {
             case 'none':
                 break;
             default:
-                throw new Error("invalid logging type '" + level + "'");
+                throw new window.Error("invalid logging type '" + level + "'");
         }
+        /* eslint-enable no-console, no-fallthrough */
     }
-};
-export function get_logging () {
-    return _log_level;
-};
+}
+
+export function getLogging() {
+    return _logLevel;
+}
+
 export { Debug, Info, Warn, Error };
 
 // Initialize logging level
-init_logging();
+initLogging();

core/util/md5.js

@@ -0,0 +1,79 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2021 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
+
+/*
+ * Performs MD5 hashing on a string of binary characters, returns an array of bytes
+ */
+
+export function MD5(d) {
+    let r = M(V(Y(X(d), 8 * d.length)));
+    return r;
+}
+
+function M(d) {
+    let f = new Uint8Array(d.length);
+    for (let i=0;i<d.length;i++) {
+        f[i] = d.charCodeAt(i);
+    }
+    return f;
+}
+
+function X(d) {
+    let r = Array(d.length >> 2);
+    for (let m = 0; m < r.length; m++) r[m] = 0;
+    for (let m = 0; m < 8 * d.length; m += 8) r[m >> 5] |= (255 & d.charCodeAt(m / 8)) << m % 32;
+    return r;
+}
+
+function V(d) {
+    let r = "";
+    for (let m = 0; m < 32 * d.length; m += 8) r += String.fromCharCode(d[m >> 5] >>> m % 32 & 255);
+    return r;
+}
+
+function Y(d, g) {
+    d[g >> 5] |= 128 << g % 32, d[14 + (g + 64 >>> 9 << 4)] = g;
+    let m = 1732584193, f = -271733879, r = -1732584194, i = 271733878;
+    for (let n = 0; n < d.length; n += 16) {
+        let h = m,
+            t = f,
+            g = r,
+            e = i;
+        f = ii(f = ii(f = ii(f = ii(f = hh(f = hh(f = hh(f = hh(f = gg(f = gg(f = gg(f = gg(f = ff(f = ff(f = ff(f = ff(f, r = ff(r, i = ff(i, m = ff(m, f, r, i, d[n + 0], 7, -680876936), f, r, d[n + 1], 12, -389564586), m, f, d[n + 2], 17, 606105819), i, m, d[n + 3], 22, -1044525330), r = ff(r, i = ff(i, m = ff(m, f, r, i, d[n + 4], 7, -176418897), f, r, d[n + 5], 12, 1200080426), m, f, d[n + 6], 17, -1473231341), i, m, d[n + 7], 22, -45705983), r = ff(r, i = ff(i, m = ff(m, f, r, i, d[n + 8], 7, 1770035416), f, r, d[n + 9], 12, -1958414417), m, f, d[n + 10], 17, -42063), i, m, d[n + 11], 22, -1990404162), r = ff(r, i = ff(i, m = ff(m, f, r, i, d[n + 12], 7, 1804603682), f, r, d[n + 13], 12, -40341101), m, f, d[n + 14], 17, -1502002290), i, m, d[n + 15], 22, 1236535329), r = gg(r, i = gg(i, m = gg(m, f, r, i, d[n + 1], 5, -165796510), f, r, d[n + 6], 9, -1069501632), m, f, d[n + 11], 14, 643717713), i, m, d[n + 0], 20, -373897302), r = gg(r, i = gg(i, m = gg(m, f, r, i, d[n + 5], 5, -701558691), f, r, d[n + 10], 9, 38016083), m, f, d[n + 15], 14, -660478335), i, m, d[n + 4], 20, -405537848), r = gg(r, i = gg(i, m = gg(m, f, r, i, d[n + 9], 5, 568446438), f, r, d[n + 14], 9, -1019803690), m, f, d[n + 3], 14, -187363961), i, m, d[n + 8], 20, 1163531501), r = gg(r, i = gg(i, m = gg(m, f, r, i, d[n + 13], 5, -1444681467), f, r, d[n + 2], 9, -51403784), m, f, d[n + 7], 14, 1735328473), i, m, d[n + 12], 20, -1926607734), r = hh(r, i = hh(i, m = hh(m, f, r, i, d[n + 5], 4, -378558), f, r, d[n + 8], 11, -2022574463), m, f, d[n + 11], 16, 1839030562), i, m, d[n + 14], 23, -35309556), r = hh(r, i = hh(i, m = hh(m, f, r, i, d[n + 1], 4, -1530992060), f, r, d[n + 4], 11, 1272893353), m, f, d[n + 7], 16, -155497632), i, m, d[n + 10], 23, -1094730640), r = hh(r, i = hh(i, m = hh(m, f, r, i, d[n + 13], 4, 681279174), f, r, d[n + 0], 11, -358537222), m, f, d[n + 3], 16, -722521979), i, m, d[n + 6], 23, 76029189), r = hh(r, i = hh(i, m = hh(m, f, r, i, d[n + 9], 4, -640364487), f, r, d[n + 12], 11, -421815835), m, f, d[n + 15], 16, 530742520), i, m, d[n + 2], 23, -995338651), r = ii(r, i = ii(i, m = ii(m, f, r, i, d[n + 0], 6, -198630844), f, r, d[n + 7], 10, 1126891415), m, f, d[n + 14], 15, -1416354905), i, m, d[n + 5], 21, -57434055), r = ii(r, i = ii(i, m = ii(m, f, r, i, d[n + 12], 6, 1700485571), f, r, d[n + 3], 10, -1894986606), m, f, d[n + 10], 15, -1051523), i, m, d[n + 1], 21, -2054922799), r = ii(r, i = ii(i, m = ii(m, f, r, i, d[n + 8], 6, 1873313359), f, r, d[n + 15], 10, -30611744), m, f, d[n + 6], 15, -1560198380), i, m, d[n + 13], 21, 1309151649), r = ii(r, i = ii(i, m = ii(m, f, r, i, d[n + 4], 6, -145523070), f, r, d[n + 11], 10, -1120210379), m, f, d[n + 2], 15, 718787259), i, m, d[n + 9], 21, -343485551), m = add(m, h), f = add(f, t), r = add(r, g), i = add(i, e);
+    }
+    return Array(m, f, r, i);
+}
+
+function cmn(d, g, m, f, r, i) {
+    return add(rol(add(add(g, d), add(f, i)), r), m);
+}
+
+function ff(d, g, m, f, r, i, n) {
+    return cmn(g & m | ~g & f, d, g, r, i, n);
+}
+
+function gg(d, g, m, f, r, i, n) {
+    return cmn(g & f | m & ~f, d, g, r, i, n);
+}
+
+function hh(d, g, m, f, r, i, n) {
+    return cmn(g ^ m ^ f, d, g, r, i, n);
+}
+
+function ii(d, g, m, f, r, i, n) {
+    return cmn(m ^ (g | ~f), d, g, r, i, n);
+}
+
+function add(d, g) {
+    let m = (65535 & d) + (65535 & g);
+    return (d >> 16) + (g >> 16) + (m >> 16) << 16 | 65535 & m;
+}
+
+function rol(d, g) {
+    return d << g | d >>> 32 - g;
+}

core/util/polyfill.js

@@ -1,54 +0,0 @@
-/*
- * noVNC: HTML5 VNC client
- * Copyright 2017 Pierre Ossman for noVNC
- * Licensed under MPL 2.0 or any later version (see LICENSE.txt)
- */
-
-/* Polyfills to provide new APIs in old browsers */
-
-/* Object.assign() (taken from MDN) */
-if (typeof Object.assign != 'function') {
-    // Must be writable: true, enumerable: false, configurable: true
-    Object.defineProperty(Object, "assign", {
-        value: function assign(target, varArgs) { // .length of function is 2
-            'use strict';
-            if (target == null) { // TypeError if undefined or null
-                throw new TypeError('Cannot convert undefined or null to object');
-            }
-
-            var to = Object(target);
-
-            for (var index = 1; index < arguments.length; index++) {
-                var nextSource = arguments[index];
-
-                if (nextSource != null) { // Skip over if undefined or null
-                    for (var nextKey in nextSource) {
-                        // Avoid bugs when hasOwnProperty is shadowed
-                        if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
-                            to[nextKey] = nextSource[nextKey];
-                        }
-                    }
-                }
-            }
-            return to;
-        },
-        writable: true,
-        configurable: true
-    });
-}
-
-/* CustomEvent constructor (taken from MDN) */
-(function () {
-    function CustomEvent ( event, params ) {
-        params = params || { bubbles: false, cancelable: false, detail: undefined };
-        var evt = document.createEvent( 'CustomEvent' );
-        evt.initCustomEvent( event, params.bubbles, params.cancelable, params.detail );
-        return evt;
-    }
-
-    CustomEvent.prototype = window.Event.prototype;
-
-    if (typeof window.CustomEvent !== "function") {
-        window.CustomEvent = CustomEvent;
-    }
-})();