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+<!DOCTYPE html>
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+<html lang="en" style="height:100%;">
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+ <head>
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+ <meta charset="utf-8">
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+ <title>WebVM - Linux virtualization in WebAssembly</title>
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+
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+ <meta name="description" content="Server-less virtual machine, networking included, running browser-side in HTML5/WebAssembly. Code in any programming language inside this Linux terminal.">
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+ <meta name="keywords" content="WebVM, Virtual Machine, CheerpX, x86 virtualization, WebAssembly, Tailscale, JIT">
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+ <meta property="og:title" content="WebVM - Linux virtualization in WebAssembly" />
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+ <meta property="og:type" content="website" />
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+ <meta property="og:site_name" content="WebVM"/>
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+ <meta property="og:url" content="/">
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+ <meta property="og:image" content="https://webvm.io/assets/welcome_to_WebVM_.png" />
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+ <meta name="twitter:card" content="summary_large_image" />
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+ <meta name="twitter:site" content="@leaningtech" />
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+ <meta name="twitter:title" content="WebVM - Linux virtualization in WebAssembly" />
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+ <meta name="twitter:description" content="Server-less virtual machine, networking included, running browser-side in HTML5/WebAssembly. Code in any programming language inside this Linux terminal.">
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+ <meta name="twitter:image" content="https://webvm.io/assets/welcome_to_WebVM_.png" />
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+
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+ <!-- Apple iOS web clip compatibility tags -->
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+ <meta name="application-name" content="WebVM" />
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+ <meta name="apple-mobile-web-app-title" content="WebVM" />
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+ <meta name="apple-mobile-web-app-capable" content="yes" />
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+ <meta name="mobile-web-app-capable" content="yes" />
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+ <meta name="apple-mobile-web-app-status-bar-style" content="black" />
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+
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+ <link rel="shortcut icon" href="./tower.ico">
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+ <link rel="preconnect" href="https://fonts.googleapis.com">
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+ <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
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+ <link rel="stylesheet" id="us-fonts-css" href="https://fonts.googleapis.com/css?family=Montserrat%3A300%2C400%2C500%2C600%2C700&display=swap&ver=6.0.2" media="all">
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+ <link rel="stylesheet" href="./xterm/xterm.css" />
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+ <link rel="stylesheet" href="./scrollbar.css" />
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+ <script>
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+ window.networkInterface = { bind: null, connect: null, listen: null, ready: false };
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+ </script>
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+ <script src="./xterm/xterm.js"></script>
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+ <script src="./xterm/xterm-addon-fit.js"></script>
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+ <script defer type="module">
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+ import { State } from "/tun/tailscale_tun.js";
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+ import { autoConf } from "/tun/tailscale_tun_auto.js";
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+
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+ let resolveLogin = null;
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+ let loginPromise = new Promise((f,r) => {
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+ resolveLogin = f;
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+ });
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+ const loginElem = document.getElementById("loginLink");
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+ const statusElem = document.getElementById("networkStatus");
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+ const loginUrlCb = (url) => {
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+ loginElem.href = url;
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+ loginElem.target = "_blank";
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+ statusElem.innerHTML = "Tailscale Login";
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+ resolveLogin(url);
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+ };
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+ const stateUpdateCb = (state) => {
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+ switch(state)
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+ {
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+ case State.NeedsLogin:
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+ {
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+ break;
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+ }
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+ case State.Running:
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+ {
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+ loginElem.href = "https://login.tailscale.com/admin/machines";
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+ break;
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+ }
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+ case State.Starting:
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+ {
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+ break;
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+ }
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+ case State.Stopped:
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+ {
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+ break;
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+ }
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+ case State.NoState:
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+ {
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+ break;
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+ }
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+ }
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+ };
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+ const netmapUpdateCb = (map) => {
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+ const ip = map.self.addresses[0];
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+ statusElem.innerHTML = "IP: "+ip;
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+ };
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+ const { listen, connect, bind, up } = await autoConf({
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+ loginUrlCb,
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+ stateUpdateCb,
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+ netmapUpdateCb,
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+ });
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+ window.networkInterface.bind = bind;
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+ window.networkInterface.connect = connect;
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+ window.networkInterface.listen = listen;
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+ window.networkInterface.ready = true;
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+ loginElem.style.cursor = "pointer";
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+ statusElem.style.color = "white";
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+ loginElem.onclick = () => {
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+ loginElem.onclick = null;
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+ statusElem.innerHTML = "Downloading network code...";
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+ const w = window.open("login.html", "_blank");
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+ async function waitLogin() {
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+ await up();
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+ statusElem.innerHTML = "Starting login...";
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+ const url = await loginPromise;
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+ w.location.href = url;
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+ }
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+ waitLogin();
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+ };
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+ </script>
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+ </head>
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+
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+ <body style="margin:0;height:100%;background:black;color:white;overflow:hidden; display:flex; flex-direction: column; justify-content: space-between; height: 100%;">
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+
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+ <header style="flex-grow:0; flex-srink: 0;height:80px; width: 100%; margin: 2px 0 2px 0;">
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+ <div style="display: flex; flex-direction: row; justify-content: space-between; width: 100%;">
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+ <div style="display: flex; flex-direction: row;">
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+ <a href="https://leaningtech.com/" target="_blank">
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+ <img src="./assets/leaningtech.png" style="margin-left: 10px; height: 60px; margin-top: 10px;">
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+ </a>
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+ </div>
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+ <div style="display: flex; flex-direction: row; justify-content: space-before;">
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+ <li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
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+ <a href="https://discord.leaningtech.com" target="_blank" style="text-decoration: none">
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+ <div style="color: white; font-family: montserrat; font-weight: 700; font-size: large;">Discord</div>
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+ </a>
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+ </li>
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+ <li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
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+ <a href="https://github.com/leaningtech/webvm" target="_blank" style="text-decoration: none" >
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+ <div style="color: white; font-family: montserrat; font-weight: 700; font-size: large;">Github</div>
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+ </a>
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+ </li>
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+ <li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
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+ <a id="loginLink" style="text-decoration: none; cursor:not-allowed;">
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+ <div id="networkStatus" style="color: grey; font-family: montserrat; font-weight: 700; font-size: large;">Tailscale Login</div>
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+ </a>
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+ </li>
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+ </div>
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+ </div>
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+ </header>
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+ <div style="flex-grow:0; flex-shrink: 0; height:1px; width: 100%; background-color: white;">
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+ </div>
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+ <main style="display: flex; flex-direction: row; justify-content: space-between; margin:0; height:100%;">
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+ <div style="flex-grow:1; height:100%;display:inline-block;margin:0;" class="scrollbar" id="console">
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+ </div>
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+
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+ </main>
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+ <script>
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+
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+ //Utility namespace to group all functionality related to printing (both error and non error) messages
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+ const color= "\x1b[1;35m";
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+ const bold= "\x1b[1;37m";
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+ const underline= "\x1b[94;4m";
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+ const normal= "\x1b[0m";
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+ var printOnTerm = {
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+ getAsciiTitle: function ()
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+ {
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+ var title = [
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+ color + " __ __ _ __ ____ __ " + normal,
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+ color + " \\ \\ / /__| |_\\ \\ / / \\/ | " + normal,
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+ color + " \\ \\/\\/ / -_) '_ \\ V /| |\\/| | " + normal,
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+ color + " \\_/\\_/\\___|_.__/\\_/ |_| |_| " + normal,
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+
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+ ];
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+ return title;
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+ },
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+ getAsciiText: function ()
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+ {
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+ var text = [
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+ "+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+",
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+ "| |",
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+ "| WebVM is a server-less virtual Linux environment running fully client-side |",
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+ "| in HTML5/WebAssembly. |",
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+ "| |",
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+ "| WebVM is powered by the CheerpX virtualization engine, which enables safe, |",
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+ "| sandboxed client-side execution of x86 binaries on any browser. |",
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+ "| |",
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+ "| CheerpX includes an x86-to-WebAssembly JIT compiler, a virtual block-based |",
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+ "| file system, and a Linux syscall emulator. |",
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+ "| |",
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+ "| [NEW!] WebVM now supports full TCP and UDP networking via Tailscale! |",
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+ "| Click on 'Tailscale Login' to enable it. Read the announcement: |",
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+ "| |",
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+ "| " + underline + "https://leaningtech.com/webvm-virtual-machine-with-networking-via-tailscale" + normal +" |",
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+ "| |",
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+ "+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+",
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+ "",
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+ " Welcome to WebVM (build CX_VERSION). If unsure, try these examples:",
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+ "",
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+ " python3 examples/python3/fibonacci.py ",
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+ " gcc -o helloworld examples/c/helloworld.c && ./helloworld",
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+ " objdump -d ./helloworld | less -M",
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+ " vim examples/c/helloworld.c",
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+ " curl --max-time 15 parrot.live # requires networking",
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+ "",
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+ ];
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+ return text;
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+ },
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+ getSharedArrayBufferMissingMessage: function ()
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+ {
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+ const text = [
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+ "",
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+ "",
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+ color + "CheerpX could not start" + normal,
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+ "",
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+ "CheerpX depends on JavaScript's SharedArrayBuffer, that your browser",
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+ " does not support.",
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+ "",
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+ "SharedArrayBuffer is currently enabled by default on recent",
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+ " versions of Chrome, Edge, Firefox and Safari.",
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+ "",
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+ "",
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+ "Give it a try from another browser!",
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+ ]
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+
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+ return text;
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+ },
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+ getErrorMessage: function (error_message)
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+ {
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+ const text = [
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+ "",
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+ "",
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+ color + "CheerpX could not start" + normal,
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+ "",
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+ "CheerpX internal error message is:",
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+ error_message,
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+ "",
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+ "",
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+ "CheerpX is expected to work with recent desktop versions of Chrome, Edge, Firefox and Safari",
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+ "",
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+ "",
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+ "Give it a try from a desktop version / another browser!",
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+ ]
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+
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+ return text;
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+ },
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+ printMessage: function (text) {
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+ for (var i=0; i<text.length; i++)
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+ {
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+ term.write(text[i]);
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+ term.write('\n');
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+ }
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+ },
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+ printError: function (message)
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+ {
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+ this.printMessage(message);
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+
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+ term.write("\n\n");
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+
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+ function writeCustom(something)
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+ {
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+ term.write(something);
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+ }
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+ },
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+ };
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+
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+ var consoleDiv = document.getElementById("console");
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+
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+ //xterm.js related logic
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+ var term = new Terminal({cursorBlink:true,convertEol:true, fontFamily:"monospace", fontWeight: 400, fontWeightBold: 700});
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+ var fitAddon = new FitAddon.FitAddon();
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+ term.loadAddon(fitAddon);
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+ term.open(consoleDiv);
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+ term.scrollToTop();
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+
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+ fitAddon.fit();
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+ window.addEventListener("resize", function(ev){fitAddon.fit();}, false);
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+ term.focus();
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+ var cxReadFunc = null;
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+ function writeData(buf)
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+ {
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+ term.write(new Uint8Array(buf));
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+ }
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+ function readData(str)
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+ {
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+ if(cxReadFunc == null)
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+ return;
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+ for(var i=0;i<str.length;i++)
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+ cxReadFunc(str.charCodeAt(i));
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+ }
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+ term.onData(readData);
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+
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+ //Actual CheerpX and init specific logic
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+ function runInit()
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+ {
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+ if (typeof SharedArrayBuffer === "undefined")
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+ {
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+ printOnTerm.printError(printOnTerm.getSharedArrayBufferMissingMessage());
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+ return;
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+ }
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+
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+ async function runTest(cx)
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+ {
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+ term.scrollToBottom();
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+
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+ cxReadFunc = cx.setCustomConsole(writeData, term.cols, term.rows);
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+
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+ function preventDefaults (e) {
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+ e.preventDefault()
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+ e.stopPropagation()
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+ }
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+ consoleDiv.addEventListener("dragover", preventDefaults, false);
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+ consoleDiv.addEventListener("dragenter", preventDefaults, false);
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+ consoleDiv.addEventListener("dragleave", preventDefaults, false);
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+ consoleDiv.addEventListener("drop", preventDefaults, false);
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+
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+ var opts = {uid:0};
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+ cx.run("/init", [], opts);
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+ }
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+ function failCallback(err)
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+ {
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+ printOnTerm.printError(printOnTerm.getErrorMessage(err));
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+ }
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+ CheerpXApp.create({devices:[{type:"block",url:"https://disks.leaningtech.com/tc_nographic_20221117.ext2",name:"block1"}],mounts:[{type:"ext2",dev:"block1",path:"/"},{type:"cheerpOS",dev:"/app",path:"/app"}], networkInterface}).then(runTest, failCallback);
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+ }
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+ function initialMessage()
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+ {
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+ console.log("Welcome. We appreciate curiosity, but be warned that keeping the DevTools open causes significant performance degradation and crashes.");
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+ }
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+ initialMessage();
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+
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+ var script = document.createElement('script');
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+ script.type = 'text/javascript';
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+
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+ var cxFile = "https://cheerpxdemos.leaningtech.com/publicdeploy/20221125/cx.js";
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+ script.src = cxFile;
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+ script.addEventListener("load", runInit, false);
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+
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+ document.head.appendChild(script);
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+
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+ </script>
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+<!-- Google tag (gtag.js) -->
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+<script defer src="https://www.googletagmanager.com/gtag/js?id=G-818T3Y0PEY"></script>
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+<script defer>
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+ window.dataLayer = window.dataLayer || [];
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+ function gtag(){dataLayer.push(arguments);}
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+ gtag('js', new Date());
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+
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+ gtag('config', 'G-818T3Y0PEY');
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+</script>
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+ </body>
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+</html>
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+
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Jules Saarikoski