0ct0pu5
/
webvm


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en" style="height:100%;">
  <head>
    <meta charset="utf-8">
    <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:url" content="/">
    <meta property="og:image" content="https://webvm.io/assets/welcome_to_WebVM_.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/welcome_to_WebVM_.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&amp;display=swap&amp;ver=6.0.2" media="all">
    <link rel="stylesheet" href="./xterm/xterm.css" />
    <link rel="stylesheet" href="./scrollbar.css" />
    <script src="./xterm/xterm.js"></script>
    <script src="./xterm/xterm-addon-fit.js"></script>
    <script>
        window.networkInterface = { bind: null, connect: null, listen: null, ready: false };
    </script>
    <script type="module" 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%;">

    <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;">
          <a href="https://leaningtech.com/" target="_blank">
            <img src="./assets/leaningtech.png" style="margin-left: 10px; height: 60px; margin-top: 10px;">
          </a>
        </div>
        <div style="display: flex; flex-direction: row; justify-content: space-before;">
          <li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
            <a href="https://discord.leaningtech.com" target="_blank"  style="text-decoration: none">
              <div style="color: white; font-family: montserrat; font-weight: 700; font-size: large;">Discord</div>
            </a>
          </li>
          <li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
            <a href="https://github.com/leaningtech/webvm" target="_blank" style="text-decoration: none" >
              <div style="color: white; font-family: montserrat; font-weight: 700; font-size: large;">Github</div>
            </a>
          </li>
          <li style=" margin-right: 50px; height: 100%; display: flex; align-items: center;">
            <a id="loginLink" style="text-decoration: none; cursor:not-allowed;">
              <div id="networkStatus" style="color: grey; font-family: montserrat; font-weight: 700; font-size: large;">Tailscale Login</div>
            </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%;">
      <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!] WebVM now supports full TCP and UDP networking via Tailscale!        |",
				"| Click on 'Tailscale Login' to enable it. Read the announcement:             |",
				"|                                                                             |",
				"| " + underline + "https://leaningtech.com/webvm-virtual-machine-with-networking-via-tailscale" + normal +" |",
				"|                                                                             |",
				"+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+",
				"",
				"   Welcome to WebVM (build CX_VERSION). 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);
	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()
	{
		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",
		}
		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));
		}
					CheerpXApp.create({devices:[{type:"block",url:"https://disks.leaningtech.com/webvm_20221004.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);
	}
	function initialMessage()
	{
		printOnTerm.printMessage(printOnTerm.getAsciiTitle());
		printOnTerm.printMessage([""]);
		printOnTerm.printMessage(printOnTerm.getAsciiText());
		term.registerLinkMatcher(/https:\/\/leaningtech.com\/webvm-virtual-machine-with-networking-via-tailscale/, 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();

	var script = document.createElement('script');
	script.type = 'text/javascript';

	var cxFile = "https://cheerpxdemos.leaningtech.com/publicdeploy/CX_VERSION/cx.js";
	script.src = cxFile;
	script.addEventListener("load", runBash, false);

	document.head.appendChild(script);

    </script>
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