Limiting acceptable mail nodes
[hcoop/domtool2.git] / src / plugins / exim.sml
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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(* Exim MTA handling *)
20
21structure Exim :> EXIM = struct
22
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23open Ast
24
25val dl = ErrorMsg.dummyLoc
26
aa56e112 27val _ = Defaults.registerDefault ("MailNodes",
bbdf617f 28 (TList (TBase "mail_node", dl), dl),
aa56e112 29 (fn () => (EList (map (fn s => (EString s, dl)) Config.Exim.aliasTo), dl)))
e0b0abd2 30
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31val aliasesChanged = ref false
32val aliasesDefaultChanged = ref false
ed9fda3a 33val hostsChanged = ref false
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34
35val () = Slave.registerPreHandler
36 (fn () => (aliasesChanged := false;
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37 aliasesDefaultChanged := false;
38 hostsChanged := false))
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39
40val () = Slave.registerFileHandler (fn fs =>
41 let
42 val spl = OS.Path.splitDirFile (#file fs)
43 in
44 if #file spl = "aliases" then
45 aliasesChanged := true
46 else if #file spl = "aliases.default" then
47 aliasesDefaultChanged := true
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48 else if #file spl = "mail" then
49 hostsChanged := true
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50 else
51 ()
52 end)
53
54val () = Slave.registerPostHandler
55 (fn () =>
56 (if !aliasesChanged then
57 Slave.concatTo (fn s => s = "aliases") Config.Exim.aliases
58 else
59 ();
60 if !aliasesDefaultChanged then
61 Slave.concatTo (fn s => s = "aliases.default") Config.Exim.aliasesDefault
62 else
63 ();
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64 if !hostsChanged then
65 Slave.enumerateTo (fn s => s = "mail") ":" Config.Exim.handleDomains
66 else
67 ();
68 if !aliasesChanged orelse !aliasesDefaultChanged
69 orelse !hostsChanged then
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70 Slave.shellF ([Config.Exim.reload],
71 fn cl => "Error reloading exim with " ^ cl)
72 else
73 ()))
74
ed9fda3a 75
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76val () = Env.actionV_none "handleMail"
77 (fn env =>
78 let
79 val nodes = Env.env (Env.list Env.string) (env, "MailNodes")
80 in
81 app (fn node => TextIO.closeOut
82 (Domain.domainFile {node = node,
83 name = "mail"})) nodes
84 end)
ed9fda3a 85
8df2e702 86end