Mercurial > hg > rlgwebd

annotate webttyd.js @ 1:9bef0941c6dd

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add a few comments.
author John "Elwin" Edwards <elwin@sdf.org>
date Sun, 06 May 2012 09:04:14 -0700
parents bd412f63ce0d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
1 #!/usr/bin/env node
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
2
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
3 // If you can't quite trust node to find it on its own
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
4 var localModules = '/usr/local/lib/node_modules/';
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
5 var http = require('http');
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
6 var url = require('url');
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
7 var path = require('path');
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
8 var fs = require('fs');
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
9 //var tty = require("tty");
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
10 var child_process = require('child_process');
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
11 var daemon = require(path.join(localModules, "daemon"));
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
12
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
13 var chrootDir = "/var/dgl/";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
14 var dropToUID = 501;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
15 var dropToGID = 501;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
16 var serveStaticRoot = "/var/www/"; // inside the chroot
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
17 var passwdfile = "/dgldir/dgl-login";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
18 var sessions = {};
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
19
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
20 var games = {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
21 "rogue3": {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
22 "name": "Rogue V3",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
23 "uname": "rogue3",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
24 "path": "/bin/rogue3"
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
25 },
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
26 "rogue4": {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
27 "name": "Rogue V4",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
28 "uname": "rogue4",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
29 "path": "/bin/rogue4"
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
30 },
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
31 "rogue5": {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
32 "name": "Rogue V5",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
33 "uname": "rogue5",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
34 "path": "/bin/rogue5"
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
35 },
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
36 "srogue": {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
37 "name": "Super-Rogue",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
38 "uname": "srogue",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
39 "path": "/bin/srogue"
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
40 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
41 };
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
42
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
43 /* Constructor for TermSessions. Note that it opens the terminal and
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
44 * adds itself to the sessions dict. It currently assumes the user has
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
45 * been authenticated.
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
46 */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
47 function TermSession(game, user, files) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
48 /* First make sure starting the game will work. */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
49 if (!(game in games)) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
50 // TODO: throw an exception instead
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
51 return null;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
52 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
53 /* This order seems to best avoid race conditions... */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
54 this.alive = false;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
55 this.sessid = randkey();
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
56 while (this.sessid in sessions) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
57 this.sessid = randkey();
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
58 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
59 /* Grab a spot in the sessions table. */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
60 sessions[this.sessid] = this;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
61 /* TODO handle tty-opening errors */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
62 //var pterm = tty.open(games[game].path, ["-n", user.toString()]);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
63 /* TODO make argument-finding into a method */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
64 args = [games[game].path, "-n", user.toString()];
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
65 this.child = child_process.spawn("/bin/ptyhelper", args);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
66 var ss = this;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
67 //this.ptmx = pterm[0];
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
68 //this.child = pterm[1];
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
69 this.alive = true;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
70 this.data = [];
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
71 this.lock = files[0];
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
72 fs.writeFile(this.lock, this.child.pid.toString() + '\n80\n24\n', "utf8");
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
73 this.record = fs.createWriteStream(files[1], { mode: 0664 });
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
74 /* END setup */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
75 function ttyrec_chunk(buf) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
76 var ts = new Date();
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
77 var chunk = new Buffer(buf.length + 12);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
78 /* TTYREC headers */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
79 chunk.writeUInt32LE(Math.floor(ts.getTime() / 1000), 0);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
80 chunk.writeUInt32LE(1000 * (ts.getTime() % 1000), 4);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
81 chunk.writeUInt32LE(buf.length, 8);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
82 buf.copy(chunk, 12);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
83 ss.data.push(chunk);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
84 ss.record.write(chunk);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
85 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
86 this.child.stdout.on("data", ttyrec_chunk);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
87 this.child.stderr.on("data", ttyrec_chunk);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>