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<!DOCTYPE html>
<html lang="en" style="height:100%;">
<meta property="og:image" content="https://webvm.io/assets/reddit.png"/>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=1100, initial-scale=1.0">
<title>WebVM - Linux virtualization in WebAssembly</title>
<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.">
<meta name="keywords" content="WebVM, Virtual Machine, CheerpX, x86 virtualization, WebAssembly, Tailscale, JIT">
<meta property="og:title" content="WebVM - Linux virtualization in WebAssembly" />
<meta property="og:type" content="website" />
<meta property="og:site_name" content="WebVM"/>
<meta property="og:image" content="https://webvm.io/assets/social.png" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:site" content="@leaningtech" />
<meta name="twitter:title" content="WebVM - Linux virtualization in WebAssembly" />
<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.">
<meta name="twitter:image" content="https://webvm.io/assets/social.png" />
<!-- Apple iOS web clip compatibility tags -->
<meta name="application-name" content="WebVM" />
<meta name="apple-mobile-web-app-title" content="WebVM" />
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
<link rel="shortcut icon" href="./tower.ico">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<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">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/github-fork-ribbon-css/0.2.3/gh-fork-ribbon.min.css" />
<link rel="stylesheet" href="./xterm/xterm.css" />
<link rel="stylesheet" href="./scrollbar.css" />
<style>.github-fork-ribbon:before { background-color: #ea1e69; }</style>
<!-- Serviceworker script that adds the COI and CORS headers to the response headers in cases where the server does not support it. -->
<script src="serviceWorker.js"></script>
<script src="./xterm/xterm.js"></script>
<script src="./xterm/xterm-addon-fit.js"></script>
<script src="./xterm/xterm-addon-image.js"></script>
<script src="network.js"></script>
</head>
<body style="margin:0;height:100%;background:black;color:white;overflow:hidden; display:flex; flex-direction: column; justify-content: space-between; height: 100%;">
<a class="github-fork-ribbon right-bottom" href="https://github.com/leaningtech/webvm/" target="_blank" data-ribbon="Fork me on GitHub" title="Fork me on GitHub">Fork me on GitHub</a>
<div>
<div style="padding-top: 0.7em;padding-bottom: 0.7em;font-size: 0.3em; font-weight: 200;vertical-align:center;height: 120px;">
<div style="margin-left: 20px; height: 100%; display: flex; align-items: center; justify-content: space-between;">
<pre style="font-family: monospace; font-weight: 600; font-size: large; color: #ad7fa8;">
__ __ _ __ ____ __
\ \ / /__| |_\ \ / / \/ |
\ \/\/ / -_) '_ \ V /| |\/| |
\_/\_/\___|_.__/\_/ |_| |_|
</pre>
<div style="height:100%;display: flex; flex-direction: column;justify-content: space-between;">
<div style="padding-top: 0.7em;font-size: 0.3em; font-weight: 200;vertical-align:center;height:50px;">
<div style="margin-right: 10px; margin-left: 20px; height: 100%; display: flex; align-items: center; justify-content: flex-end;gap: 50px;">
<div style="padding-top: 0.7em;font-size: 0.3em; font-weight: 200;vertical-align:center;">
<a href="https://leaningtech.com" style="text-decoration: none; height: 100%;" target="_blank">
<div style="color: white; font-family: montserrat; font-weight: 400; font-size: large; height: 100%; display: flex; align-items: center;">
<span>Made with ❤️ by </span>
<img src="assets/leaningtech.png" height="40px" style="margin-left: 5px;">
</div>
</a>
</div>
</div>
</div>
<div style="padding-top: 0.7em;font-size: 0.3em; font-weight: 200;vertical-align:center;height:50px;">
<div style="margin-right: 10px; margin-left: 20px; height: 100%; display: flex; align-items: center; justify-content: flex-end;gap: 50px;">
<div style="color: white; font-family: montserrat; font-weight: 400; font-size: large; height: 100%; display: flex; align-items: center;">
<span>CPU </span>
<span id="cpuactivity" style="margin-left: 7px;">🟢</span>
</div>
<div style="color: white; font-family: montserrat; font-weight: 400; font-size: large; height: 100%; display: flex; align-items: center;">
<span>HDD </span>
<span id="hddactivity" style="margin-left: 7px;">🟢</span>
</div>
<a id="loginLink" style="user-select: text ;text-decoration: none; height: 100%;">
<div style="color: white; font-family: montserrat; font-weight: 400; font-size: large; height: 100%; display: flex; align-items: center;">
<div style="position: relative;">
<span style="cursor: pointer" id="networkStatus">Connect via Tailscale </span>
<span style="cursor: pointer; position: absolute; right: 0px; visibility: hidden;" id="ipCopied">Copied! </span>
</div>
<img src="assets/tailscale.svg" height="35px" style="margin-left: 7px;">
</div>
</a>
<a href="https://discord.gg/yTNZgySKGa" style="text-decoration: none; height: 100%;" target="_blank">
<div style="color: white; font-family: montserrat; font-weight: 400; font-size: large; height: 100%; display: flex; align-items: center;">
<span>Join Discord </span>
<img src="assets/discord-mark-blue.svg" height="35px" style="margin-left: 7px;">
</div>
</a>
<a href="https://github.com/leaningtech/webvm/issues" style="text-decoration: none; height: 100%;" target="_blank">
<div style="color: white; font-family: montserrat; font-weight: 400; font-size: large; height: 100%; display: flex; align-items: center;">
<span>GitHub Issues </span>
<img src="assets/github-mark-white.svg" height="35px" style="margin-left: 5px;">
</div>
</a>
</div>
</div>
</div>
</div>
</div>
</div>
<div style="flex-grow:0; flex-shrink: 0; height:1px; width: 100%; background-color: white;">
</div>
<main style="display: flex; flex-direction: row; justify-content: space-between; margin: 5px; height: 100%;">
<div style="flex-grow:1; height:100%;display:inline-block;margin:0;" class="scrollbar" id="console">
</div>
</main>
<script>
//Utility namespace to group all functionality related to printing (both error and non error) messages
const color= "\x1b[1;35m";
const bold= "\x1b[1;37m";
const underline= "\x1b[94;4m";
const normal= "\x1b[0m";
var printOnTerm = {
getAsciiTitle: function ()
{
var title = [
color + " __ __ _ __ ____ __ " + normal,
color + " \\ \\ / /__| |_\\ \\ / / \\/ | " + normal,
color + " \\ \\/\\/ / -_) '_ \\ V /| |\\/| | " + normal,
color + " \\_/\\_/\\___|_.__/\\_/ |_| |_| " + normal,
];
return title;
},
getAsciiText: function ()
{
var text = [
"+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+",
"| |",
"| WebVM is a server-less virtual Linux environment running fully client-side |",
"| in HTML5/WebAssembly. |",
"| |",
"| WebVM is powered by the CheerpX virtualization engine, which enables safe, |",
"| sandboxed client-side execution of x86 binaries on any browser. |",
"| |",
"| CheerpX includes an x86-to-WebAssembly JIT compiler, a virtual block-based |",
"| file system, and a Linux syscall emulator. |",
"| |",
"| [NEW!] Your own WebVM with custom images via Dockerfile: |",
"| |",
"| " + underline + "https://leaningtech.com/mini-webvm-your-linux-box-from-dockerfile-via-wasm" + normal +" |",
"| |",
"+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+",
"",
" Welcome to WebVM. If unsure, try these examples:",
"",
" python3 examples/python3/fibonacci.py ",
" gcc -o helloworld examples/c/helloworld.c && ./helloworld",
" objdump -d ./helloworld | less -M",
" vim examples/c/helloworld.c",
" curl --max-time 15 parrot.live # requires networking",
"",
];
return text;
},
getSharedArrayBufferMissingMessage: function ()
{
const text = [
"",
"",
color + "CheerpX could not start" + normal,
"",
"CheerpX depends on JavaScript's SharedArrayBuffer, that your browser",
" does not support.",
"",
"SharedArrayBuffer is currently enabled by default on recent",
" versions of Chrome, Edge, Firefox and Safari.",
"",
"",
"Give it a try from another browser!",
]
return text;
},
getErrorMessage: function (error_message)
{
const text = [
"",
"",
color + "CheerpX could not start" + normal,
"",
"CheerpX internal error message is:",
error_message,
"",
"",
"CheerpX is expected to work with recent desktop versions of Chrome, Edge, Firefox and Safari",
"",
"",
"Give it a try from a desktop version / another browser!",
]
return text;
},
printMessage: function (text) {
for (var i=0; i<text.length; i++)
{
term.write(text[i]);
term.write('\n');
}
},
printError: function (message)
{
this.printMessage(message);
term.write("\n\n");
function writeCustom(something)
{
term.write(something);
}
},
};
var consoleDiv = document.getElementById("console");
//xterm.js related logic
var term = new Terminal({cursorBlink:true,convertEol:true, fontFamily:"monospace", fontWeight: 400, fontWeightBold: 700});
var fitAddon = new FitAddon.FitAddon();
term.loadAddon(fitAddon);
var imageAddon = new ImageAddon.ImageAddon();
term.loadAddon(imageAddon);
term.open(consoleDiv);
term.scrollToTop();
fitAddon.fit();
window.addEventListener("resize", function(ev){fitAddon.fit();}, false);
term.focus();
var cxReadFunc = null;
function writeData(buf)
{
term.write(new Uint8Array(buf));
}
function readData(str)
{
if(cxReadFunc == null)
return;
for(var i=0;i<str.length;i++)
cxReadFunc(str.charCodeAt(i));
}
term.onData(readData);
//Actual CheerpX and bash specific logic
function runBash()
{
// cmd, cwd, args and env are replaced by the Github actions workflow.
var cmd = CMD;
var args = ARGS;
var env = ENV;
var cwd = CWD;
// Reasonable defaults for local deployments
// var cmd = "/bin/bash";
// var args = ["--login"];
// var env = ["HOME=/home/user", "TERM=xterm", "USER=user", "SHELL=/bin/bash", "EDITOR=vim", "LANG=en_US.UTF-8", "LC_ALL=C"];
// var cwd = "/home/user";
const structure = {
cmd: cmd,
args: args,
env: env,
cwd: cwd
}
if (typeof SharedArrayBuffer === "undefined")
{
printOnTerm.printError(printOnTerm.getSharedArrayBufferMissingMessage());
return;
}
let networkInterface = setupNetworkInterface();
async function runTest(cx)
{
registerNetworkLogin(cx, networkInterface);
term.scrollToBottom();
async function cxLogAndRun(cheerpx, cmd, args, env)
{
await cheerpx.run(cmd, args, env);
printOnTerm.printMessage(" ");
}
cxReadFunc = cx.setCustomConsole(writeData, term.cols, term.rows);
function preventDefaults (e) {
e.preventDefault()
e.stopPropagation()
}
consoleDiv.addEventListener("dragover", preventDefaults, false);
consoleDiv.addEventListener("dragenter", preventDefaults, false);
consoleDiv.addEventListener("dragleave", preventDefaults, false);
consoleDiv.addEventListener("drop", preventDefaults, false);
var opts = {env:structure.env, cwd:structure.cwd, uid: 1000, gid: 1000};
while (true)
{
await cxLogAndRun(cx, structure.cmd, structure.args, opts);
}
}
function failCallback(err)
{
printOnTerm.printError(printOnTerm.getErrorMessage(err));
}
function devCallback(state)
{
var h = document.getElementById("hddactivity");
if(state == "ready")
h.textContent = "\u{1F7E2}";
else
h.textContent = "\u{1F7E0}";
}
function cpuCallback(state)
{
var h = document.getElementById("cpuactivity");
if(state == "ready")
h.textContent = "\u{1F7E2}";
else
h.textContent = "\u{1F7E0}";
}
// The device url and type are replaced by Github Actions.
CheerpXApp.create({devices:[{type:DEVICE_TYPE,url:IMAGE_URL,name:"block1"}],mounts:[{type:"ext2",dev:"block1",path:"/"},{type:"cheerpOS",dev:"/app",path:"/app"},{type:"cheerpOS",dev:"/str",path:"/data"},{type:"devs",dev:"",path:"/dev"}], networkInterface: networkInterface, activityInterface: {cpu: cpuCallback, dev: devCallback}}).then(runTest, failCallback);
}
function initialMessage()
{
printOnTerm.printMessage(printOnTerm.getAsciiText());
term.registerLinkMatcher(/https:\/\/leaningtech.com\/[a-z-]+/, function(mouseEvent, matchedString) {
window.open(matchedString, "_blank")
});
console.log("Welcome. We appreciate curiosity, but be warned that keeping the DevTools open causes significant performance degradation and crashes.");
}
initialMessage();
async function loadCX()
{
// Find the latest build
var r = await fetch("https://cheerpxdemos.leaningtech.com/publicdeploy/LATEST.txt");
var url = await r.text();
url = url.trim();
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = url;
script.addEventListener("load", runBash, false);
document.head.appendChild(script);
}
loadCX();
</script>
<!-- Google tag (gtag.js) -->
<script defer src="https://www.googletagmanager.com/gtag/js?id=G-818T3Y0PEY"></script>
<script defer>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'G-818T3Y0PEY');
</script>
</body>
</html>