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annotate rlgwebd.js @ 27:83f9a799a374

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rlgwebd.js: read commands from the console The RLG-Web server can now be controlled with commands sent to stdin. Currently, the only one implemented is "quit". Some improvements to the shutdown process were also made.
author John "Elwin" Edwards <elwin@sdf.org>
date Mon, 04 Jun 2012 14:21:41 -0700
parents 9b58f8d3ea70
children 2ad2b6491aa9
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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 child_process = require('child_process');
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10 var daemon = require(path.join(localModules, "daemon"));
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11
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12 var chrootDir = "/var/dgl/";
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13 var dropToUID = 501;
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14 var dropToGID = 501;
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15 var serveStaticRoot = "/var/www/"; // inside the chroot
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16 var passwdfile = "/dgldir/dgl-login";
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17 var sessions = {};
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18 var allowlogin = true;
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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, dims) {
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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 /* State for messaging. */
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62 this.nsend = 0;
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63 this.nrecv = 0;
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64 this.msgQ = []
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65 this.Qtimeout = null;
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66 /* Set up the sizes. */
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67 this.w = Math.floor(Number(dims[1]));
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68 if (!(this.w > 0 && this.w < 256))
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69 this.w = 80;
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70 this.h = Math.floor(Number(dims[0]));
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71 if (!(this.h > 0 && this.h < 256))
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72 this.h = 24;
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73 /* Environment. */
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74 var childenv = {};
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75 for (var key in process.env) {
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76 childenv[key] = process.env[key];
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77 }
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78 childenv["PTYHELPER"] = String(this.h) + "x" + String(this.w);
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79 /* TODO handle tty-opening errors */
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80 /* TODO make argument-finding into a method */
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81 args = [games[game].path, "-n", user.toString()];
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82 this.child = child_process.spawn("/bin/ptyhelper", args, {"env": childenv});
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83 var ss = this;
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84 this.alive = true;
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85 this.data = [];