src/msg.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 (* Network messages *)
  20
  21 structure Msg :> MSG = struct
  22
  23 open OpenSSL MsgTypes Slave
  24
  25 val a2i = fn Add => 0
  26            | Delete true => 1
  27            | Modify => 2
  28            | Delete false => 3
  29
  30 val i2a = fn 0 => Add
  31            | 1 => Delete true
  32            | 2 => Modify
  33            | 3 => Delete false
  34            | _ => raise OpenSSL.OpenSSL "Bad action number to deserialize"
  35
  36 fun sendAcl (bio, {user, class, value}) =
  37     (OpenSSL.writeString (bio, user);
  38      OpenSSL.writeString (bio, class);
  39      OpenSSL.writeString (bio, value))
  40
  41 fun recvAcl bio =
  42     case (OpenSSL.readString bio, OpenSSL.readString bio, OpenSSL.readString bio) of
  43         (SOME user, SOME class, SOME value) => SOME {user = user, class = class, value = value}
  44       | _ => NONE
  45
  46 fun sendList f (bio, ls) =
  47     (app (fn x =>
  48              (OpenSSL.writeInt (bio, 1);
  49               f (bio, x))) ls;
  50      OpenSSL.writeInt (bio, 0))
  51
  52 fun recvList f bio =
  53     let
  54         fun loop ls =
  55             case OpenSSL.readInt bio of
  56                 SOME 0 => SOME (rev ls)
  57               | SOME 1 =>
  58                 (case f bio of
  59                      SOME x => loop (x :: ls)
  60                    | NONE => NONE)
  61               | _ => NONE
  62     in
  63         loop []
  64     end
  65
  66 fun sendOption f (bio, opt) =
  67     case opt of
  68         NONE => OpenSSL.writeInt (bio, 0)
  69       | SOME x => (OpenSSL.writeInt (bio, 1);
  70                    f (bio, x))
  71
  72 fun recvOption f bio =
  73     case OpenSSL.readInt bio of
  74         SOME 0 => SOME NONE
  75       | SOME 1 =>
  76         (case f bio of
  77              SOME x => SOME (SOME x)
  78            | NONE => NONE)
  79       | _ => NONE
  80
  81 fun sendBool (bio, b) =
  82     if b then
  83         OpenSSL.writeInt (bio, 1)
  84     else
  85         OpenSSL.writeInt (bio, 0)
  86
  87 fun recvBool bio =
  88     case OpenSSL.readInt bio of
  89         SOME 0 => SOME false
  90       | SOME 1 => SOME true
  91       | _ => NONE
  92
  93 fun sendSockPerm (bio, p) =
  94     case p of
  95         Any => OpenSSL.writeInt (bio, 0)
  96       | Client => OpenSSL.writeInt (bio, 1)
  97       | Server => OpenSSL.writeInt (bio, 2)
  98       | Nada => OpenSSL.writeInt (bio, 3)
  99
 100 fun recvSockPerm bio =
 101     case OpenSSL.readInt bio of
 102         SOME 0 => SOME Any
 103       | SOME 1 => SOME Client
 104       | SOME 2 => SOME Server
 105       | SOME 3 => SOME Nada
 106       | _ => NONE
 107
 108 fun sendQuery (bio, q) =
 109     case q of
 110         QApt s => (OpenSSL.writeInt (bio, 0);
 111                    OpenSSL.writeString (bio, s))
 112       | QCron s => (OpenSSL.writeInt (bio, 1);
 113                     OpenSSL.writeString (bio, s))
 114       | QFtp s => (OpenSSL.writeInt (bio, 2);
 115                    OpenSSL.writeString (bio, s))
 116       | QTrustedPath s => (OpenSSL.writeInt (bio, 3);
 117                            OpenSSL.writeString (bio, s))
 118       | QSocket s => (OpenSSL.writeInt (bio, 4);
 119                       OpenSSL.writeString (bio, s))
 120       | QFirewall s => (OpenSSL.writeInt (bio, 5);
 121                         OpenSSL.writeString (bio, s))
 122
 123 fun recvQuery bio =
 124     case OpenSSL.readInt bio of
 125         SOME n =>
 126         (case n of
 127              0 => Option.map QApt (OpenSSL.readString bio)
 128            | 1 => Option.map QCron (OpenSSL.readString bio)
 129            | 2 => Option.map QFtp (OpenSSL.readString bio)
 130            | 3 => Option.map QTrustedPath (OpenSSL.readString bio)
 131            | 4 => Option.map QSocket (OpenSSL.readString bio)
 132            | 5 => Option.map QFirewall (OpenSSL.readString bio)
 133            | _ => NONE)
 134       | NONE => NONE
 135
 136 fun send (bio, m) =
 137     case m of
 138         MsgOk => OpenSSL.writeInt (bio, 1)
 139       | MsgError s => (OpenSSL.writeInt (bio, 2);
 140                        OpenSSL.writeString (bio, s))
 141       | MsgConfig s => (OpenSSL.writeInt (bio, 3);
 142                        OpenSSL.writeString (bio, s))
 143       | MsgFile {action, domain, dir, file} =>
 144         (OpenSSL.writeInt (bio, 4);
 145          OpenSSL.writeInt (bio, a2i action);
 146          OpenSSL.writeString (bio, domain);
 147          OpenSSL.writeString (bio, dir);
 148          OpenSSL.writeString (bio, file))
 149       | MsgDoFiles => OpenSSL.writeInt (bio, 5)
 150       | MsgGrant acl => (OpenSSL.writeInt (bio, 6);
 151                          sendAcl (bio, acl))
 152       | MsgRevoke acl => (OpenSSL.writeInt (bio, 7);
 153                           sendAcl (bio, acl))
 154       | MsgListPerms user => (OpenSSL.writeInt (bio, 8);
 155                               OpenSSL.writeString (bio, user))
 156       | MsgPerms classes => (OpenSSL.writeInt (bio, 9);
 157                              sendList (fn (bio, (class, values)) =>
 158                                           (OpenSSL.writeString (bio, class);
 159                                            sendList OpenSSL.writeString (bio, values)))
 160                                       (bio, classes))
 161       | MsgWhoHas {class, value} => (OpenSSL.writeInt (bio, 10);
 162                                      OpenSSL.writeString (bio, class);
 163                                      OpenSSL.writeString (bio, value))
 164       | MsgWhoHasResponse users => (OpenSSL.writeInt (bio, 11);
 165                                     sendList OpenSSL.writeString (bio, users))
 166       | MsgMultiConfig codes => (OpenSSL.writeInt (bio, 12);
 167                                  sendList OpenSSL.writeString (bio, codes))
 168       | MsgRmdom doms => (OpenSSL.writeInt (bio, 13);
 169                           sendList OpenSSL.writeString (bio, doms))
 170       | MsgRegenerate => OpenSSL.writeInt (bio, 14)
 171       | MsgRmuser dom => (OpenSSL.writeInt (bio, 15);
 172                           OpenSSL.writeString (bio, dom))
 173       | MsgCreateDbUser {dbtype, passwd} => (OpenSSL.writeInt (bio, 16);
 174                                              OpenSSL.writeString (bio, dbtype);
 175                                              sendOption OpenSSL.writeString (bio, passwd))
 176       | MsgCreateDb {dbtype, dbname, encoding} => (OpenSSL.writeInt (bio, 17);
 177                                                    OpenSSL.writeString (bio, dbtype);
 178                                                    OpenSSL.writeString (bio, dbname);
 179                                                    sendOption OpenSSL.writeString (bio, encoding))
 180       | MsgNewMailbox {domain, user, passwd, mailbox} =>
 181         (OpenSSL.writeInt (bio, 18);
 182          OpenSSL.writeString (bio, domain);
 183          OpenSSL.writeString (bio, user);
 184          OpenSSL.writeString (bio, passwd);
 185          OpenSSL.writeString (bio, mailbox))
 186       | MsgPasswdMailbox {domain, user, passwd} =>
 187         (OpenSSL.writeInt (bio, 19);
 188          OpenSSL.writeString (bio, domain);
 189          OpenSSL.writeString (bio, user);
 190          OpenSSL.writeString (bio, passwd))
 191       | MsgRmMailbox {domain, user} =>
 192         (OpenSSL.writeInt (bio, 20);
 193          OpenSSL.writeString (bio, domain);
 194          OpenSSL.writeString (bio, user))
 195       | MsgListMailboxes domain =>
 196         (OpenSSL.writeInt (bio, 21);
 197          OpenSSL.writeString (bio, domain))
 198       | MsgMailboxes users =>
 199         (OpenSSL.writeInt (bio, 22);
 200          sendList (fn (bio, {user, mailbox}) =>
 201                             (OpenSSL.writeString (bio, user);
 202                              OpenSSL.writeString (bio, mailbox)))
 203          (bio, users))
 204       | MsgSaQuery addr => (OpenSSL.writeInt (bio, 23);
 205                             OpenSSL.writeString (bio, addr))
 206       | MsgSaStatus b => (OpenSSL.writeInt (bio, 24);
 207                           sendBool (bio, b))
 208       | MsgSaSet (addr, b) => (OpenSSL.writeInt (bio, 25);
 209                                OpenSSL.writeString (bio, addr);
 210                                sendBool (bio, b))
 211       | MsgSmtpLogReq domain => (OpenSSL.writeInt (bio, 26);
 212                                  OpenSSL.writeString (bio, domain))
 213       | MsgSmtpLogRes domain => (OpenSSL.writeInt (bio, 27);
 214                                  OpenSSL.writeString (bio, domain))
 215       | MsgDbPasswd {dbtype, passwd} => (OpenSSL.writeInt (bio, 28);
 216                                          OpenSSL.writeString (bio, dbtype);
 217                                          OpenSSL.writeString (bio, passwd))
 218       | MsgShutdown => OpenSSL.writeInt (bio, 29)
 219       | MsgYes => OpenSSL.writeInt (bio, 30)
 220       | MsgNo => OpenSSL.writeInt (bio, 31)
 221       | MsgQuery q => (OpenSSL.writeInt (bio, 32);
 222                        sendQuery (bio, q))
 223       | MsgSocket p => (OpenSSL.writeInt (bio, 33);
 224                         sendSockPerm (bio, p))
 225       | MsgFirewall ls => (OpenSSL.writeInt (bio, 34);
 226                            sendList OpenSSL.writeString (bio, ls))
 227       | MsgRegenerateTc => OpenSSL.writeInt (bio, 35)
 228       | MsgDropDb {dbtype, dbname} => (OpenSSL.writeInt (bio, 36);
 229                                        OpenSSL.writeString (bio, dbtype);
 230                                        OpenSSL.writeString (bio, dbname))
 231       | MsgGrantDb {dbtype, dbname} => (OpenSSL.writeInt (bio, 37);
 232                                         OpenSSL.writeString (bio, dbtype);
 233                                         OpenSSL.writeString (bio, dbname))
 234       | MsgMysqlFixperms => OpenSSL.writeInt (bio, 38)
 235       | MsgDescribe dom => (OpenSSL.writeInt (bio, 39);
 236                             OpenSSL.writeString (bio, dom))
 237       | MsgDescription s => (OpenSSL.writeInt (bio, 40);
 238                              OpenSSL.writeString (bio, s))
 239       | MsgReUsers => OpenSSL.writeInt (bio, 41)
 240       | MsgVmailChanged => OpenSSL.writeInt (bio, 42)
 241       | MsgFirewallRegen => OpenSSL.writeInt (bio, 43)
 242
 243 fun checkIt v =
 244     case v of
 245         NONE => raise OpenSSL.OpenSSL "Bad Msg format"
 246       | _ => v
 247
 248 fun recv bio =
 249     case OpenSSL.readInt bio of
 250         NONE => NONE
 251       | SOME n =>
 252         checkIt (case n of
 253                      1 => SOME MsgOk
 254                    | 2 => Option.map MsgError (OpenSSL.readString bio)
 255                    | 3 => Option.map MsgConfig (OpenSSL.readString bio)
 256                    | 4 => (case (OpenSSL.readInt bio,
 257                                  OpenSSL.readString bio,
 258                                  OpenSSL.readString bio,
 259                                  OpenSSL.readString bio) of
 260                                (SOME action, SOME domain, SOME dir, SOME file) =>
 261                                SOME (MsgFile {action = i2a action,
 262                                               domain = domain,
 263                                               dir = dir,
 264                                               file = file})
 265                              | _ => NONE)
 266                    | 5 => SOME MsgDoFiles
 267                    | 6 => (case recvAcl bio of
 268                                SOME acl => SOME (MsgGrant acl)
 269                              | _ => NONE)
 270                    | 7 => (case recvAcl bio of
 271                                SOME acl => SOME (MsgRevoke acl)
 272                              | _ => NONE)
 273                    | 8 => (case OpenSSL.readString bio of
 274                                SOME user => SOME (MsgListPerms user)
 275                              | _ => NONE)
 276                    | 9 => Option.map MsgPerms
 277                                      (recvList (fn bio =>
 278                                                    case (OpenSSL.readString bio,
 279                                                          recvList OpenSSL.readString bio) of
 280                                                        (SOME class, SOME values) => SOME (class, values)
 281                                                      | _ => NONE) bio)
 282                    | 10 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 283                                 (SOME class, SOME value) => SOME (MsgWhoHas {class = class, value = value})
 284                               | _ => NONE)
 285                    | 11 => Option.map MsgWhoHasResponse
 286                            (recvList OpenSSL.readString bio)
 287                    | 12 => Option.map MsgMultiConfig
 288                            (recvList OpenSSL.readString bio)
 289                    | 13 => Option.map MsgRmdom (recvList OpenSSL.readString bio)
 290                    | 14 => SOME MsgRegenerate
 291                    | 15 => Option.map MsgRmuser (OpenSSL.readString bio)
 292                    | 16 => (case (OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
 293                                 (SOME dbtype, SOME passwd) =>
 294                                 SOME (MsgCreateDbUser {dbtype = dbtype, passwd = passwd})
 295                               | _ => NONE)
 296                    | 17 => (case (OpenSSL.readString bio, OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
 297                                 (SOME dbtype, SOME dbname, SOME encoding) =>
 298                                 SOME (MsgCreateDb {dbtype = dbtype, dbname = dbname, encoding = encoding})
 299                               | _ => NONE)
 300                    | 18 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
 301                                   OpenSSL.readString bio, OpenSSL.readString bio) of
 302                                 (SOME domain, SOME user, SOME passwd, SOME mailbox) =>
 303                                 SOME (MsgNewMailbox {domain = domain, user = user,
 304                                                      passwd = passwd, mailbox = mailbox})
 305                               | _ => NONE)
 306                    | 19 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
 307                                   OpenSSL.readString bio) of
 308                                 (SOME domain, SOME user, SOME passwd) =>
 309                                 SOME (MsgPasswdMailbox {domain = domain, user = user,
 310                                                         passwd = passwd})
 311                               | _ => NONE)
 312                    | 20 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 313                                 (SOME domain, SOME user) =>
 314                                 SOME (MsgRmMailbox {domain = domain, user = user})
 315                               | _ => NONE)
 316                    | 21 => Option.map MsgListMailboxes (OpenSSL.readString bio)
 317                    | 22 => Option.map MsgMailboxes (recvList
 318                                                         (fn bio =>
 319                                                             case (OpenSSL.readString bio,
 320                                                                   OpenSSL.readString bio) of
 321                                                                 (SOME user, SOME mailbox) =>
 322                                                                 SOME {user = user, mailbox = mailbox}
 323                                                               | _ => NONE)
 324                                                         bio)
 325                    | 23 => Option.map MsgSaQuery (OpenSSL.readString bio)
 326                    | 24 => Option.map MsgSaStatus (recvBool bio)
 327                    | 25 => (case (OpenSSL.readString bio, recvBool bio) of
 328                                 (SOME user, SOME b) => SOME (MsgSaSet (user, b))
 329                               | _ => NONE)
 330                    | 26 => Option.map MsgSmtpLogReq (OpenSSL.readString bio)
 331                    | 27 => Option.map MsgSmtpLogRes (OpenSSL.readString bio)
 332                    | 28 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 333                                 (SOME dbtype, SOME passwd) =>
 334                                 SOME (MsgDbPasswd {dbtype = dbtype, passwd = passwd})
 335                               | _ => NONE)
 336                    | 29 => SOME MsgShutdown
 337                    | 30 => SOME MsgYes
 338                    | 31 => SOME MsgNo
 339                    | 32 => Option.map MsgQuery (recvQuery bio)
 340                    | 33 => Option.map MsgSocket (recvSockPerm bio)
 341                    | 34 => Option.map MsgFirewall (recvList OpenSSL.readString bio)
 342                    | 35 => SOME MsgRegenerateTc
 343                    | 36 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 344                                 (SOME dbtype, SOME dbname) =>
 345                                 SOME (MsgDropDb {dbtype = dbtype, dbname = dbname})
 346                               | _ => NONE)
 347                    | 37 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 348                                 (SOME dbtype, SOME dbname) =>
 349                                 SOME (MsgGrantDb {dbtype = dbtype, dbname = dbname})
 350                               | _ => NONE)
 351                    | 38 => SOME MsgMysqlFixperms
 352                    | 39 => Option.map MsgDescribe (OpenSSL.readString bio)
 353                    | 40 => Option.map MsgDescription (OpenSSL.readString bio)
 354                    | 41 => SOME MsgReUsers
 355                    | 42 => SOME MsgVmailChanged
 356                    | 43 => SOME MsgFirewallRegen
 357                    | _ => NONE)
 358
 359 end