295 lines
11 KiB
HTML
295 lines
11 KiB
HTML
<!DOCTYPE html>
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<html lang="en" style="height:100%;">
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<head>
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<!-- Google Tag Manager -->
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<script>
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(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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</script>
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<!-- End Google Tag Manager -->
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<meta charset="utf-8">
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<title>WebVM</title>
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<meta name="description" content="WebVM - a Bash shell, demo of CheerpX x86 emulation technology, completely client side">
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<meta name="keywords" content="WebVM, Bash, CheerpX, WebAssembly">
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<meta property="og:title" content="WebVM" />
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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/webvm.jpeg" />
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<meta name="twitter:card" content="summary" />
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<meta name="twitter:site" content="@leaningtech" />
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<meta name="twitter:title" content="WebVM" />
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<meta name="twitter:description" content="WebVM - a Bash shell, demo of CheerpX x86 emulation technology, completely client side" />
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<meta name="twitter:image" content="https://webvm.io/assets/webvm.jpeg" />
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<link rel="shortcut icon" href="/favicon.ico">
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<link rel="preconnect" href="https://fonts.gstatic.com">
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<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" href="/xterm/xterm.css" />
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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 src="https://cheerpxdemos.leaningtech.com/publicdeploy/20220131_600/cx.js"></script>
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</head>
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<body style="margin:0;height:100%;background:black;color:white;overflow:hidden;">
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<!-- Google Tag Manager (noscript) -->
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<noscript>
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<iframe src="https://www.googletagmanager.com/ns.html?id=GTM-5GBJM42" height="0" width="0"
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style="display:none;visibility:hidden"></iframe>
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</noscript>
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<!-- End Google Tag Manager (noscript) -->
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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;" id="console">
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</div>
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</main>
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<script>
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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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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 based on Leaning Technologies' virtualization engine, CheerpX. |",
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" | |",
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" | CheerpX allows safe client-side execution of x86 apps in a WebAssembly |",
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" | sandbox. |",
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" | |",
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" | CheerpX includes a WebAssembly JIT compiler to achieve |",
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" | a high level of performance. |",
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" | |",
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" | WebVM is an headless, serverless Debian environment. It runs unmodified |",
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" | binaries from the Debian distribution. |",
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" | |",
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" | " +
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underline + "Medium" + normal + " | " +
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underline + "GitHub" + normal + " | " +
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underline + "Issues" + normal + " | " +
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underline + "Gitter" + normal + " | " +
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underline + "Twitter" + normal + " | " +
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underline + "CheerpX's site" + normal + " |",
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" | |",
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" +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+",
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"",
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" Welcome to WebVM! If you don't know what to do, try to create and delete ",
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" files, or to compile / execute one of the examples. All the data will be ",
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" saved internally to the browser. If you want to reset the state of WebVM, ",
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" delete the cache and IndexDB for this page.",
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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 and Firefox.",
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"",
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"Safari and mobile don't support this JavaScript feature, but will do in the future",
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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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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 and Firefox",
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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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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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term.write("\n\n");
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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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var consoleDiv = document.getElementById("console");
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//xterm.js related logic
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var term = new Terminal({cursorBlink:true,convertEol:true, fontFamily:"'Roboto Mono', 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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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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structure = {
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name: "bash",
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cmd: "/bin/bash",
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args: ["--login"],
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env: ["HOME=/home/user", "TERM=xterm", "USER=user", "SHELL=/bin/bash", "EDITOR=vim", "LANG=en_US.UTF-8", "LC_ALL=C"],
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expectedPrompt: ">",
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versionOpt: "--version",
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comment_line: "#",
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description_line: "The original Bourne Again SHell",
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}
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//Actual CheerpX and bash specific logic
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function runBash(structure)
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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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async function runTest(cx)
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{
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term.scrollToBottom();
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async function cxLogAndRun(cheerpx, cmd, args, env)
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{
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await cheerpx.run(cmd, args, env);
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printOnTerm.printMessage(" ");
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}
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cxReadFunc = cx.setCustomConsole(writeData, term.cols, term.rows);
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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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var opts = {env:structure.env, cwd:"/home/user"};
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while (true)
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{
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await cxLogAndRun(cx, structure.cmd, structure.args, opts);
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}
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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/webvm_20220131.ext2",name:"block1"}],mounts:[{type:"ext2",dev:"block1",path:"/"},{type:"cheerpOS",dev:"/app",path:"/bootstrap"},{type:"devs",dev:"",path:"/dev"}]}).then(runTest, failCallback);
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}
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function initialMessage()
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{
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printOnTerm.printMessage(printOnTerm.getAsciiTitle());
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printOnTerm.printMessage(["\n"]);
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printOnTerm.printMessage(printOnTerm.getAsciiText());
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const textArray = new Array(6);
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const linksArray = new Array(6);
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const rangesArray = new Array(6);
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var last = 0;
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const textLinkLine = " | Medium | GitHub | Issues | Gitter | Twitter | CheerpX's site |";
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const lineWithLinks = 20;
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function addLink(text, website)
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{
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var index = textLinkLine.indexOf(text);
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const start_x = index+1;
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const end_x = index + text.length;
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rangesArray[last] = {start: {x:start_x, y:lineWithLinks}, end: {x:end_x, y:lineWithLinks}};
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linksArray[last] = website;
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last++;
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}
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addLink("Medium", "https://medium.com/leaningtech");
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addLink("GitHub", "https://github.com/leaningtech/webvm");
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addLink("Issues", "https://github.com/leaningtech/webvm/issues");
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addLink("Gitter", "https://gitter.im/leaningtech/cheerpx");
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addLink("Twitter", "https://twitter.com/leaningtech");
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addLink("CheerpX's site", "https://leaningtech.com/cheerpx");
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var provider = {
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provideLinks(bufferLineNum, callback) {
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switch(bufferLineNum)
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{
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case lineWithLinks:
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{
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callback([
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{range: rangesArray[0], activate() {window.open('' + linksArray[0], '_blank');}},
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{range: rangesArray[1], activate() {window.open('' + linksArray[1], '_blank');}},
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{range: rangesArray[2], activate() {window.open('' + linksArray[2], '_blank');}},
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{range: rangesArray[3], activate() {window.open('' + linksArray[3], '_blank');}},
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{range: rangesArray[4], activate() {window.open('' + linksArray[4], '_blank');}},
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{range: rangesArray[5], activate() {window.open('' + linksArray[5], '_blank');}},
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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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};
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term.registerLinkProvider(provider);
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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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runBash(structure);
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</script>
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</body>
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</html>
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