annotate webtty @ 195:3bdee6371c3f

Change various filenames. The shell script previously used to launch the daemon is now called "initscript". The script files have had the ".js" extension removed from their names.
author John "Elwin" Edwards
date Thu, 14 Jan 2016 20:52:29 -0500
parents webtty.js@5372f1f97cf5
children
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1 #!/usr/bin/env node
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2
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3 var localModules = '/usr/lib/node_modules/';
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4 var http = require('http');
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5 var url = require('url');
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6 var path = require('path');
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7 var fs = require('fs');
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8 var pty = require(path.join(localModules, "pty.js"));
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9 var child_process = require("child_process");
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10 var webSocketServer = require(path.join(localModules, "websocket")).server;
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11
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12 var serveStaticRoot = fs.realpathSync(".");
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13 var sessions = {};
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14 var nsessid = 0;
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15
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16 var env_dontuse = {"TMUX": true, "TMUX_PANE": true};
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17
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18 /* Constructor for TermSessions. Note that it opens the terminal and
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19 * adds itself to the sessions dict.
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20 */
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21 function TermSessionWS(conn, h, w) {
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22 var ss = this;
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23 /* Set up the sizes. */
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24 w = Math.floor(Number(w));
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25 if (!(w > 0 && w < 256))
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26 w = 80;
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27 this.w = w;
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28 h = Math.floor(Number(h));
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29 if (!(h > 0 && h < 256))
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30 h = 25;
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31 this.h = h;
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32 this.conn = conn;
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33 /* Customize the environment. */
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34 var childenv = {};
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35 for (var key in process.env) {
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36 if (!(key in env_dontuse))
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37 childenv[key] = process.env[key];
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38 }
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39 var spawnopts = {"env": childenv, "cwd": process.env["HOME"],
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40 "rows": this.h, "cols": this.w};
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41 this.term = pty.spawn("bash", [], spawnopts);
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42 this.alive = true;
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43 this.term.on("data", function (datastr) {
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44 var buf = new Buffer(datastr);
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45 if (ss.conn.connected)
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46 ss.conn.sendUTF(JSON.stringify({"t": "d", "d": buf.toString("hex")}));
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47 });
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48 this.term.on("exit", function () {
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49 ss.alive = false;
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50 /* Wait for all the data to get collected */
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51 setTimeout(ss.cleanup, 1000);
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52 });
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53 this.conn.on("message", function (msg) {
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54 try {
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55 var msgObj = JSON.parse(msg.utf8Data);
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56 }
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57 catch (e) {
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58 return;
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59 }
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60 if (msgObj.t == "d") {
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61 var hexstr = msgObj["d"].replace(/[^0-9a-f]/gi, "");
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62 if (hexstr.length % 2 != 0) {
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63 return;
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64 }
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65 var keybuf = new Buffer(hexstr, "hex");
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66 ss.term.write(keybuf);
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67 }
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68 });
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69 this.conn.on("close", function (msg) {
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70 if (ss.alive)
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71 ss.term.kill('SIGHUP');
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72 console.log("WebSocket connection closed.");
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73 });
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74 this.cleanup = function () {
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75 /* Call this when the child is dead. */
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76 if (ss.alive)
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77 return;
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78 if (ss.conn.connected) {
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79 ss.conn.sendUTF(JSON.stringify({"t": "q"}));
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80 }
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81 };
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82 sessions[nsessid++] = this;
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83 this.conn.sendUTF(JSON.stringify({"t": "l", "w": w, "h": h}));
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84 console.log("New WebSocket connection.");
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85 }
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86
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87 function randkey() {
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88 rnum = Math.floor(Math.random() * 65536 * 65536);
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89 hexstr = rnum.toString(16);
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90 while (hexstr.length < 8)
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