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annotate rlgwebd.js @ 39:e8ac0e3d2614

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RLG-Web: separate logging in and starting a game. The user now logs in with a username and password, receiving a token which is then used for any actions requiring authentication. Starting a game is one such action. Games use a different set of id keys. This allows users to supply their passwords once and then play any number of successive games. Also, newly registered users do not need to supply their passwords again.
author John "Elwin" Edwards <elwin@sdf.org>
date Thu, 07 Jun 2012 15:43:06 -0700
parents 353be34de307
children f7116eb3f791
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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 net = require('net');
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7 var url = require('url');
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8 var path = require('path');
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9 var fs = require('fs');
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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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13 /* Configuration variables */
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14 // These first two files are NOT in the chroot.
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15 var ctlsocket = "/var/local/rlgwebd/ctl";
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16 var logfile = "/var/local/rlgwebd/log";
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17 var httpPort = 8080;
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18 var chrootDir = "/var/dgl/";
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19 var dropToUID = 501;
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20 var dropToGID = 501;
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21 var serveStaticRoot = "/var/www/"; // inside the chroot
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22 var playtimeout = 3600000; // Idle time before games are autosaved, in ms
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24 /* Data on the games available. */
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25 var games = {
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26 "rogue3": {
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27 "name": "Rogue V3",
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28 "uname": "rogue3",
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29 "path": "/bin/rogue3"
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30 },
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31 "rogue4": {
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32 "name": "Rogue V4",
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33 "uname": "rogue4",
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34 "path": "/bin/rogue4"
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35 },
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36 "rogue5": {
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37 "name": "Rogue V5",
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38 "uname": "rogue5",
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39 "path": "/bin/rogue5"
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40 },
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41 "srogue": {
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42 "name": "Super-Rogue",
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43 "uname": "srogue",
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44 "path": "/bin/srogue"
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45 }
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46 };
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47
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48 /* Global state */
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49 var logins = {};
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50 var sessions = {};
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51 var allowlogin = true;
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52
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53 /* Constructor for TermSessions. Note that it opens the terminal and
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54 * adds itself to the sessions dict. It currently assumes the user has
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55 * been authenticated.
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56 */
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57 function TermSession(game, user, files, dims) {
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58 /* First make sure starting the game will work. */
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59 if (game in games) {
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60 this.game = games[game];
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61 }
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62 else {
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63 // TODO: throw an exception instead
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64 return null;
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65 }
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66 this.player = user;
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67 /* This order seems to best avoid race conditions... */
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68 this.alive = false;
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69 this.sessid = randkey(2);
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70 while (this.sessid in sessions) {
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71 this.sessid = randkey(2);
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72 }
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73 /* Grab a spot in the sessions table. */
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74 sessions[this.sessid] = this;
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75 /* State for messaging. */
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76 this.nsend = 0;
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77 this.nrecv = 0;
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78 this.msgQ = []
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79 this.Qtimeout = null;
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80 /* Set up the sizes. */
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81 this.w = Math.floor(Number(dims[1]));
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82 if (!(this.w > 0 && this.w < 256))
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