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WebTTY: switch terminal size to 80x25.
author John "Elwin" Edwards <elwin@sdf.org>
date Mon, 07 May 2012 16:03:10 -0700
parents bd412f63ce0d
children
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1 #!/usr/bin/env node
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2
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3 // If you can't quite trust node to find it on its own
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4 var localModules = '/usr/local/lib/node_modules/';
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5 var http = require('http');
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6 var url = require('url');
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7 var path = require('path');
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8 var fs = require('fs');
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9 //var tty = require("tty");
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10 var child_process = require('child_process');
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11 var daemon = require(path.join(localModules, "daemon"));
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12
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13 var chrootDir = "/var/dgl/";
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14 var dropToUID = 501;
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15 var dropToGID = 501;
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16 var serveStaticRoot = "/var/www/"; // inside the chroot
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17 var passwdfile = "/dgldir/dgl-login";
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18 var sessions = {};
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19
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20 var games = {
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21 "rogue3": {
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22 "name": "Rogue V3",
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23 "uname": "rogue3",
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24 "path": "/bin/rogue3"
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25 },
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26 "rogue4": {
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27 "name": "Rogue V4",
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28 "uname": "rogue4",
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29 "path": "/bin/rogue4"
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30 },
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31 "rogue5": {
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32 "name": "Rogue V5",
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33 "uname": "rogue5",
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34 "path": "/bin/rogue5"
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35 },
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36 "srogue": {
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37 "name": "Super-Rogue",
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38 "uname": "srogue",
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39 "path": "/bin/srogue"
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40 }
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41 };
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42
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43 /* Constructor for TermSessions. Note that it opens the terminal and
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44 * adds itself to the sessions dict. It currently assumes the user has
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45 * been authenticated.
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46 */
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47 function TermSession(game, user, files) {
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48 /* First make sure starting the game will work. */
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49 if (!(game in games)) {
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50 // TODO: throw an exception instead
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51 return null;
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52 }
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53 /* This order seems to best avoid race conditions... */
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54 this.alive = false;
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55 this.sessid = randkey();
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56 while (this.sessid in sessions) {
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57 this.sessid = randkey();
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58 }
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59 /* Grab a spot in the sessions table. */
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60 sessions[this.sessid] = this;
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61 /* TODO handle tty-opening errors */
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62 //var pterm = tty.open(games[game].path, ["-n", user.toString()]);
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63 /* TODO make argument-finding into a method */
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64 args = [games[game].path, "-n", user.toString()];
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65 this.child = child_process.spawn("/bin/ptyhelper", args);
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66 var ss = this;
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67 //this.ptmx = pterm[0];
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68 //this.child = pterm[1];
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69 this.alive = true;
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70 this.data = [];
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71 this.lock = files[0];
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72 fs.writeFile(this.lock, this.child.pid.toString() + '\n80\n24\n', "utf8");
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73 this.record = fs.createWriteStream(files[1], { mode: 0664 });
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74 /* END setup */
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75 function ttyrec_chunk(buf) {
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76 var ts = new Date();
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77 var chunk = new Buffer(buf.length + 12);
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78 /* TTYREC headers */
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79 chunk.writeUInt32LE(Math.floor(ts.getTime() / 1000), 0);
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80 chunk.writeUInt32LE(1000 * (ts.getTime() % 1000), 4);
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81 chunk.writeUInt32LE(buf.length, 8);
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82 buf.copy(chunk, 12);
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83 ss.data.push(chunk);
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84 ss.record.write(chunk);
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85 }
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86 this.child.stdout.on("data", ttyrec_chunk);
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87 this.child.stderr.on("data", ttyrec_chunk);
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