Webterminal/index.html at master · walirt/Webterminal · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="http://localhost:8999/static/xterm/xterm.js"></script>
    <script src="http://localhost:8999/static/zmodem/zmodem.js"></script>
    <link href="http://localhost:8999/static/xterm/xterm.css" rel="stylesheet">
</head>
<body>
    <button onclick="init()">start</button>
    <input id="upload" type="file" onchange="upload(event)" style="display: none;">
    <div id="terminal"></div>
    <script>
        var wsUrl = "ws://localhost:8999/terminal";
        function init() {
            shellWebSocket();
        }

        function shellWebSocket() {
            var ws = new WebSocket(wsUrl);
            ws.binaryType = "arraybuffer"
            var term = new Terminal({
                cursorBlink: true,
                cursorStyle: "bar",
                bellStyle: "sound"
            })
            term.onData(function (data) {
                ws.send(JSON.stringify({
                    type: "cmd",
                    cmd: data
                }));
            });
            createZsentry()

            var intervalId
            ws.onopen = function (evt) {
                console.log("websocket open ...");
                term.open(document.getElementById('terminal'))
                term.focus()
                console.log(this)
                intervalId = login(ws)
            };
            ws.onclose = function (evt) {
                console.log("websocket close ...");
                term.dispose();
                clearInterval(intervalId)
            };
            ws.onmessage = function (evt) {
                arraybuffer2Str(evt.data).then(function(m){
                    term.write(m);
                })
                window.zsentry.consume(evt.data)
            }
        }

        function login(ws) {
            ws.send(JSON.stringify({
                type: "login",
                form: {
                    host: {{ .Host }},
                    port: {{ .Port }},
                    user: {{ .User }},
                    auth_type: {{ .AuthType }},
                    password: {{ .Password }},
                    key: {{ .SecretKey }}
                }
            }))
            intervalId = setInterval(function() {
                ws.send(JSON.stringify({
                    type: "heartbeat"
                }))
            }, 10000)
            return intervalId
        }

        function arraybuffer2Str(buf) {
            return new Promise(function(resolve, reject) {
                let bo = new Blob([buf])
                let reader = new FileReader()
                reader.readAsText(bo, "utf-8")
                reader.onload = function(e) {
                    resolve(reader.result)
                }
            })
        }

        function createZsentry() {
            window.zsentry = new Zmodem.Sentry({
                to_terminal: function(octets){},
                sender: function(octets){},
                on_detect: function(detection){
                    console.log("on_detect", detection)
                    window.session = detection.confirm()
                    if (window.session.type === "send") {
                        console.log("send")
                        document.getElementById("upload").click()
                    } else {
                        console.log("recive")
                        window.session.on("offer", function(xfer){
                            xfer.accept().then(function(){
                                Zmodem.Browser.save_to_disk(
                                    xfer.get_payloads(),
                                    xfer.get_details().name
                                )
                            })
                        })
                        window.session.start()
                    }
                },
                on_retract: function(){}
            })
        }

        function upload(evt) {
            Zmodem.Browser.send_files(window.session, evt.target.files).then(function() {
                window.session.close()
                window.session = null
            })
        }
    </script>
</body>
</html>