src/plugins/exim.sml

   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
  21 structure Exim :> EXIM = struct
  22
  23 open Ast
  24
  25 val aliasesChanged = ref false
  26 val aliasesDefaultChanged = ref false
  27 val hostsChanged = ref false
  28 val relayHostsChanged = ref false
  29
  30 val () = Slave.registerPreHandler
  31              (fn () => (aliasesChanged := false;
  32                         aliasesDefaultChanged := false;
  33                         hostsChanged := false))
  34
  35 val () = Slave.registerFileHandler (fn fs =>
  36                                        let
  37                                            val spl = OS.Path.splitDirFile (#file fs)
  38                                        in
  39                                            if #file spl = "aliases.base" then
  40                                                aliasesChanged := true
  41                                            else if #file spl = "aliases.default" then
  42                                                aliasesDefaultChanged := true
  43                                            else if #file spl = "mail.handle" then
  44                                                hostsChanged := true
  45                                            else if #file spl = "mail.relay" then
  46                                                relayHostsChanged := true
  47                                            else
  48                                                ()
  49                                        end)
  50
  51 val () = Slave.registerPostHandler
  52          (fn () =>
  53              (if !aliasesChanged then
  54                   Slave.concatTo (fn s => s = "aliases.base") Config.Exim.aliases
  55               else
  56                   ();
  57               if !aliasesDefaultChanged then
  58                   Slave.concatTo (fn s => s = "aliases.default") Config.Exim.aliasesDefault
  59               else
  60                   ();
  61               if !hostsChanged then
  62                   Slave.enumerateTo (fn s => s = "mail.handle") ":" Config.Exim.handleDomains
  63               else
  64                   ();
  65               if !relayHostsChanged then
  66                   Slave.enumerateTo (fn s => s = "mail.relay") ":" Config.Exim.relayDomains
  67               else
  68                   ();
  69               if !aliasesChanged orelse !aliasesDefaultChanged
  70                  orelse !hostsChanged orelse !relayHostsChanged then
  71                   Slave.shellF ([Config.Exim.reload],
  72                                 fn cl => "Error reloading exim with " ^ cl)
  73               else
  74                   ()))
  75
  76
  77 val () = Env.actionV_none "handleMail"
  78          (fn env =>
  79              let
  80                  val nodes = Env.env (Env.list Env.string) (env, "MailNodes")
  81              in
  82                  app (fn node => #close
  83                                      (Domain.domainsFile {node = node,
  84                                                           name = "mail.handle"}) ()) nodes
  85              end)
  86
  87 val () = Env.actionV_none "relayMail"
  88          (fn env =>
  89              let
  90                  val nodes = Env.env (Env.list Env.string) (env, "MailNodes")
  91              in
  92                  app (fn node => #close
  93                                      (Domain.domainsFile {node = node,
  94                                                           name = "mail.relay"}) ()) nodes
  95              end)
  96
  97 val () = Domain.registerDescriber (Domain.considerAll
  98                                    [Domain.Filename {filename = "aliases.base",
  99                                                      heading = "E-mail aliases:",
 100                                                      showEmpty = false},
 101                                     Domain.Filename {filename = "aliases.default",
 102                                                      heading = "Default e-mail alias:",
 103                                                      showEmpty = false},
 104                                     Domain.Filename {filename = "mail.handle",
 105                                                      heading = "E-mail handling is on.",
 106                                                      showEmpty = true},
 107                                     Domain.Filename {filename = "mail.relay",
 108                                                      heading = "E-mail relaying is on.",
 109                                                      showEmpty = true}])
 110
 111 end