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 dl = ErrorMsg.dummyLoc
  26
  27 val _ = Defaults.registerDefault ("MailNodes",
  28                                   (TList (TBase "mail_node", dl), dl),
  29                                   (fn () => (EList (map (fn s => (EString s, dl)) Config.Exim.aliasTo), dl)))
  30
  31 val aliasesChanged = ref false
  32 val aliasesDefaultChanged = ref false
  33 val hostsChanged = ref false
  34 val relayHostsChanged = ref false
  35
  36 val () = Slave.registerPreHandler
  37              (fn () => (aliasesChanged := false;
  38                         aliasesDefaultChanged := false;
  39                         hostsChanged := false))
  40
  41 val () = Slave.registerFileHandler (fn fs =>
  42                                        let
  43                                            val spl = OS.Path.splitDirFile (#file fs)
  44                                        in
  45                                            if #file spl = "aliases.base" then
  46                                                aliasesChanged := true
  47                                            else if #file spl = "aliases.default" then
  48                                                aliasesDefaultChanged := true
  49                                            else if #file spl = "mail.handle" then
  50                                                hostsChanged := true
  51                                            else if #file spl = "mail.relay" then
  52                                                relayHostsChanged := true
  53                                            else
  54                                                ()
  55                                        end)
  56
  57 val () = Slave.registerPostHandler
  58          (fn () =>
  59              (if !aliasesChanged then
  60                   Slave.concatTo (fn s => s = "aliases.base") Config.Exim.aliases
  61               else
  62                   ();
  63               if !aliasesDefaultChanged then
  64                   Slave.concatTo (fn s => s = "aliases.default") Config.Exim.aliasesDefault
  65               else
  66                   ();
  67               if !hostsChanged then
  68                   Slave.enumerateTo (fn s => s = "mail.handle") ":" Config.Exim.handleDomains
  69               else
  70                   ();
  71               if !relayHostsChanged then
  72                   Slave.enumerateTo (fn s => s = "mail.relay") ":" Config.Exim.relayDomains
  73               else
  74                   ();
  75               if !aliasesChanged orelse !aliasesDefaultChanged
  76                  orelse !hostsChanged orelse !relayHostsChanged then
  77                   Slave.shellF ([Config.Exim.reload],
  78                                 fn cl => "Error reloading exim with " ^ cl)
  79               else
  80                   ()))
  81
  82
  83 val () = Env.actionV_none "handleMail"
  84          (fn env =>
  85              let
  86                  val nodes = Env.env (Env.list Env.string) (env, "MailNodes")
  87              in
  88                  app (fn node => #close
  89                                      (Domain.domainsFile {node = node,
  90                                                           name = "mail.handle"}) ()) nodes
  91              end)
  92
  93 val () = Env.actionV_none "relayMail"
  94          (fn env =>
  95              let
  96                  val nodes = Env.env (Env.list Env.string) (env, "MailNodes")
  97              in
  98                  app (fn node => #close
  99                                      (Domain.domainsFile {node = node,
 100                                                           name = "mail.relay"}) ()) nodes
 101              end)
 102
 103 val () = Domain.registerDescriber (Domain.considerAll
 104                                    [Domain.Filename {filename = "aliases.base",
 105                                                      heading = "E-mail aliases:",
 106                                                      showEmpty = false},
 107                                     Domain.Filename {filename = "aliases.default",
 108                                                      heading = "Default e-mail alias:",
 109                                                      showEmpty = false},
 110                                     Domain.Filename {filename = "mail.handle",
 111                                                      heading = "E-mail handling is on.",
 112                                                      showEmpty = true},
 113                                     Domain.Filename {filename = "mail.relay",
 114                                                      heading = "E-mail relaying is on.",
 115                                                      showEmpty = true}])
 116
 117 end