webvm/index.html

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<!DOCTYPE html>
<html lang="en" style="height:100%;">
<head>
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<script>
(function (w, d, s, l, i) {w[l] = w[l] || []; w[l].push({'gtm.start': new Date().getTime(),event: 'gtm.js'});var f = d.getElementsByTagName(s)[0],j = d.createElement(s),dl = l != 'dataLayer' ? '&l=' + l : '';j.async = true;j.src ='https://www.googletagmanager.com/gtm.js?id=' + i + dl;f.parentNode.insertBefore(j, f);})(window, document, 'script', 'dataLayer', 'GTM-5GBJM42');
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<meta charset="utf-8">
<title>WebVM</title>
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<meta name="description" content="Welcome to WebVM - a server-less virtual Linux environment running fully client-side in HTML5/WebAssembly.">
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<meta name="keywords" content="WebVM, Bash, CheerpX, WebAssembly">
<meta property="og:title" content="WebVM" />
<meta property="og:type" content="website" />
<meta property="og:site_name" content="WebVM"/>
<meta property="og:url" content="/">
<meta property="og:image" content="https://webvm.io/assets/webvm.jpeg" />
<meta name="twitter:card" content="summary" />
<meta name="twitter:site" content="@leaningtech" />
<meta name="twitter:title" content="WebVM" />
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<meta name="twitter:description" content="Welcome to WebVM - a server-less virtual Linux environment running fully client-side in HTML5/WebAssembly.">
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<meta name="twitter:image" content="https://webvm.io/assets/webvm.jpeg" />
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<!-- Apple iOS web clip compatibility tags -->
<meta name="viewport" content="width=device-width, initial-scale=1" />
<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" />
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<link rel="shortcut icon" href="./tower.ico">
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<link rel="preconnect" href="https://fonts.gstatic.com">
<link rel="preload" as="style" href="https://fonts.googleapis.com/css2?family=Roboto+Mono:wght@400;700&display=swap" rel="stylesheet">
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<link rel="stylesheet" id="us-fonts-css" href="https://fonts.googleapis.com/css?family=Montserrat%3A300%2C400%2C500%2C600%2C700&amp;display=swap&amp;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" />
<script>
window.networkInterface = {};
</script>
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<script type="module">
import { State } from "/tun/tailscale_tun.js";
import { autoConf } from "/tun/tailscale_tun_auto.js";
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let resolveLogin = null;
let loginPromise = new Promise((f,r) => {
resolveLogin = f;
});
const loginUrlCb = (url) => {
const a = document.getElementById("loginLink");
a.href = url;
a.target = "_blank";
const status = document.getElementById("networkStatus");
status.innerHTML = "Tailscale Login";
resolveLogin(url);
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};
const stateUpdateCb = (state) => {
switch(state)
{
case State.NeedsLogin:
{
break;
}
case State.Running:
{
const a = document.getElementById("loginLink");
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a.href = "https://login.tailscale.com/admin/machines";
break;
}
case State.Starting:
{
break;
}
case State.Stopped:
{
break;
}
case State.NoState:
{
break;
}
}
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};
const netmapUpdateCb = (map) => {
const ip = map.self.addresses[0];
const status = document.getElementById("networkStatus");
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status.innerHTML = "IP: "+ip;
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};
const { listen, connect, bind, up } = await autoConf({
loginUrlCb,
stateUpdateCb,
netmapUpdateCb,
});
window.networkInterface.bind = bind;
window.networkInterface.connect = connect;
window.networkInterface.listen = listen;
window.startTailscaleAndGetLogin = async () => {
const a = document.getElementById("loginLink");
a.onclick = null;
const status = document.getElementById("networkStatus");
status.innerHTML = "Downloading network code...";
const w = window.open("login.html", "_blank");
await up();
w.document.body.innerHTML = "Starting login...";
status.innerHTML = "Starting login...";
const url = await loginPromise;
w.location.href = url;
};
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</script>
<script src="./xterm/xterm.js"></script>
<script src="./xterm/xterm-addon-fit.js"></script>
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</head>
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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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<noscript>
<iframe src="https://www.googletagmanager.com/ns.html?id=GTM-5GBJM42" height="0" width="0"
style="display:none;visibility:hidden"></iframe>
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<header style="flex-grow:0; flex-srink: 0;height:80px; width: 100%; margin: 2px 0 2px 0;">
<div style="display: flex; flex-direction: row; justify-content: space-between; width: 100%;">
<div style="display: flex; flex-direction: row;">
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<img src="./assets/tower.png" style="margin-left: 10px; width: 70px; height: 80px;">
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<div style=" margin-left: 10px; height: 100%; display: flex; align-items: center;">
<div style="color: white; font-family: montserrat; font-weight: 700; font-size: xxx-large;">WebVM</div>
</div>
</div>
<div style="display: flex; flex-direction: row; justify-content: space-before;">
<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">
<div style="color: white; font-family: montserrat; font-weight: 700; font-size: large;">Github</div>
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</a>
</li>
<li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
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<a href="https://github.com/leaningtech/webvm/issues" target="_blank">
<div style="color: white; font-family: montserrat; font-weight: 700; font-size: large;">Issues</div>
</a>
</li>
<li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
<a href="https://medium.com/p/40a60170b361" target="_blank">
<div style="color: white; font-family: montserrat; font-weight: 700; font-size: large;">About</div>
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</a>
</li>
<li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
<a id="loginLink" href="#" onclick="startTailscaleAndGetLogin()">
<div id="networkStatus" style="color: white; font-family: montserrat; font-weight: 700; font-size: large;">Tailscale Login</div>
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</a>
</li>
</div>
</div>
</header>
<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: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>
</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 = {
getAsciiText: function ()
{
var text = [
" WebVM is a server-less virtual Linux environment running fully client-side ",
" in HTML5/WebAssembly. ",
" ",
" In this demo, it runs an unmodified Debian distribution including many ",
" native development toolchains. ",
" ",
" WebVM is powered by the CheerpX virtualization engine, and 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. ",
" ",
" -------------- ",
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"",
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" Welcome to WebVM (build CX_VERSION). If unsure, try these examples:",
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"",
" python3 examples/python3/fibonacci.py ",
" gcc -o helloworld examples/c/helloworld.c && ./helloworld",
" objdump -d ./helloworld | less -M",
" vim examples/c/helloworld.c",
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"",
];
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",
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" versions of Chrome, Edge, Firefox and Safari.",
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"",
"",
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"Give it a try from another browser!",
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]
return text;
},
getErrorMessage: function (error_message)
{
const text = [
"",
"",
color + "CheerpX could not start" + normal,
"",
"CheerpX internal error message is:",
error_message,
"",
"",
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"CheerpX is expected to work with recent desktop versions of Chrome, Edge, Firefox and Safari",
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"",
"",
"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:"'Roboto Mono', monospace", fontWeight: 400, fontWeightBold: 700});
var fitAddon = new FitAddon.FitAddon();
term.loadAddon(fitAddon);
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()
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{
const structure = {
name: "bash",
cmd: "/bin/bash",
args: ["--login"],
env: ["HOME=/home/user", "TERM=xterm", "USER=user", "SHELL=/bin/bash", "EDITOR=vim", "LANG=en_US.UTF-8", "LC_ALL=C"],
expectedPrompt: ">",
versionOpt: "--version",
comment_line: "#",
description_line: "The original Bourne Again SHell",
}
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if (typeof SharedArrayBuffer === "undefined")
{
printOnTerm.printError(printOnTerm.getSharedArrayBufferMissingMessage());
return;
}
async function runTest(cx)
{
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:"/home/user"};
while (true)
{
await cxLogAndRun(cx, structure.cmd, structure.args, opts);
}
}
function failCallback(err)
{
printOnTerm.printError(printOnTerm.getErrorMessage(err));
}
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CheerpXApp.create({devices:[{type:"block",url:"https://disks.leaningtech.com/pythonfiddle_20220914.ext2",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}).then(runTest, failCallback);
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}
function initialMessage()
{
printOnTerm.printMessage(["\n"]);
printOnTerm.printMessage(printOnTerm.getAsciiText());
const textArray = new Array(6);
const linksArray = new Array(6);
const rangesArray = new Array(6);
var last = 0;
console.log("Welcome. We appreciate curiosity, but be warned that keeping the DevTools open causes significant performance degradation and crashes.");
}
initialMessage();
var script = document.createElement('script');
script.type = 'text/javascript';
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var cxFile = "https://cheerpxdemos.leaningtech.com/publicdeploy/CX_VERSION/cx.js";
script.src = cxFile;
script.addEventListener("load", runBash, false);
document.head.appendChild(script);
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</script>
</body>
</html>