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1 | (* HCoop Domtool (http://hcoop.sourceforge.net/) |
2 | * Copyright (c) 2006, Adam Chlipala |
3 | * |
4 | * This program is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU General Public License |
6 | * as published by the Free Software Foundation; either version 2 |
7 | * of the License, or (at your option) any later version. |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
17 | *) |
18 | |
19 | (* Network messages *) |
20 | |
21 | structure Msg :> MSG = struct |
22 | |
23 | open OpenSSL MsgTypes Slave |
24 | |
25 | val a2i = fn Add => 0 |
26 | | Delete => 1 |
27 | | Modify => 2 |
28 | |
29 | val i2a = fn 0 => Add |
30 | | 1 => Delete |
31 | | 2 => Modify |
32 | | _ => raise OpenSSL.OpenSSL "Bad action number to deserialize" |
33 | |
34 | fun send (bio, m) = |
35 | case m of |
36 | MsgOk => OpenSSL.writeInt (bio, 1) |
37 | | MsgError s => (OpenSSL.writeInt (bio, 2); |
38 | OpenSSL.writeString (bio, s)) |
39 | | MsgConfig s => (OpenSSL.writeInt (bio, 3); |
40 | OpenSSL.writeString (bio, s)) |
41 | | MsgFile {action, domain, dir, file} => |
42 | (OpenSSL.writeInt (bio, 4); |
43 | OpenSSL.writeInt (bio, a2i action); |
44 | OpenSSL.writeString (bio, domain); |
45 | OpenSSL.writeString (bio, dir); |
46 | OpenSSL.writeString (bio, file)) |
47 | | MsgDoFiles => OpenSSL.writeInt (bio, 5) |
48 | |
49 | fun checkIt v = |
50 | case v of |
51 | NONE => raise OpenSSL.OpenSSL "Bad Msg format" |
52 | | _ => v |
53 | |
54 | fun recv bio = |
55 | case OpenSSL.readInt bio of |
56 | NONE => NONE |
57 | | SOME n => |
58 | checkIt (case n of |
59 | 1 => SOME MsgOk |
60 | | 2 => Option.map MsgError (OpenSSL.readString bio) |
61 | | 3 => Option.map MsgConfig (OpenSSL.readString bio) |
62 | | 4 => (case (OpenSSL.readInt bio, |
63 | OpenSSL.readString bio, |
64 | OpenSSL.readString bio, |
65 | OpenSSL.readString bio) of |
66 | (SOME action, SOME domain, SOME dir, SOME file) => |
67 | SOME (MsgFile {action = i2a action, |
68 | domain = domain, |
69 | dir = dir, |
70 | file = file}) |
71 | | _ => NONE) |
72 | | 5 => SOME MsgDoFiles |
73 | | _ => NONE) |
74 | |
75 | end |