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 {node, user} => (OpenSSL.writeInt (bio, 5);
 121                                    OpenSSL.writeString (bio, node);
 122                                    OpenSSL.writeString (bio, user))
 123       | QAptExists s => (OpenSSL.writeInt (bio, 6);
 124                          OpenSSL.writeString (bio, s))
 125
 126 fun recvQuery bio =
 127     case OpenSSL.readInt bio of
 128         SOME n =>
 129         (case n of
 130              0 => Option.map QApt (OpenSSL.readString bio)
 131            | 1 => Option.map QCron (OpenSSL.readString bio)
 132            | 2 => Option.map QFtp (OpenSSL.readString bio)
 133            | 3 => Option.map QTrustedPath (OpenSSL.readString bio)
 134            | 4 => Option.map QSocket (OpenSSL.readString bio)
 135            | 5 => (case ((OpenSSL.readString bio), (OpenSSL.readString bio)) of
 136                       (SOME node, SOME user) => SOME (QFirewall { node = node, user = user })
 137                     | _ => NONE)
 138            | 6 => Option.map QAptExists (OpenSSL.readString bio)
 139            | _ => NONE)
 140       | NONE => NONE
 141
 142 fun send (bio, m) =
 143     case m of
 144         MsgOk => OpenSSL.writeInt (bio, 1)
 145       | MsgError s => (OpenSSL.writeInt (bio, 2);
 146                        OpenSSL.writeString (bio, s))
 147       | MsgConfig s => (OpenSSL.writeInt (bio, 3);
 148                        OpenSSL.writeString (bio, s))
 149       | MsgFile {action, domain, dir, file} =>
 150         (OpenSSL.writeInt (bio, 4);
 151          OpenSSL.writeInt (bio, a2i action);
 152          OpenSSL.writeString (bio, domain);
 153          OpenSSL.writeString (bio, dir);
 154          OpenSSL.writeString (bio, file))
 155       | MsgDoFiles => OpenSSL.writeInt (bio, 5)
 156       | MsgGrant acl => (OpenSSL.writeInt (bio, 6);
 157                          sendAcl (bio, acl))
 158       | MsgRevoke acl => (OpenSSL.writeInt (bio, 7);
 159                           sendAcl (bio, acl))
 160       | MsgListPerms user => (OpenSSL.writeInt (bio, 8);
 161                               OpenSSL.writeString (bio, user))
 162       | MsgPerms classes => (OpenSSL.writeInt (bio, 9);
 163                              sendList (fn (bio, (class, values)) =>
 164                                           (OpenSSL.writeString (bio, class);
 165                                            sendList OpenSSL.writeString (bio, values)))
 166                                       (bio, classes))
 167       | MsgWhoHas {class, value} => (OpenSSL.writeInt (bio, 10);
 168                                      OpenSSL.writeString (bio, class);
 169                                      OpenSSL.writeString (bio, value))
 170       | MsgWhoHasResponse users => (OpenSSL.writeInt (bio, 11);
 171                                     sendList OpenSSL.writeString (bio, users))
 172       | MsgMultiConfig codes => (OpenSSL.writeInt (bio, 12);
 173                                  sendList OpenSSL.writeString (bio, codes))
 174       | MsgRmdom doms => (OpenSSL.writeInt (bio, 13);
 175                           sendList OpenSSL.writeString (bio, doms))
 176       | MsgRegenerate => OpenSSL.writeInt (bio, 14)
 177       | MsgRmuser dom => (OpenSSL.writeInt (bio, 15);
 178                           OpenSSL.writeString (bio, dom))
 179       | MsgCreateDbUser {dbtype, passwd} => (OpenSSL.writeInt (bio, 16);
 180                                              OpenSSL.writeString (bio, dbtype);
 181                                              sendOption OpenSSL.writeString (bio, passwd))
 182       | MsgCreateDb {dbtype, dbname, encoding} => (OpenSSL.writeInt (bio, 17);
 183                                                    OpenSSL.writeString (bio, dbtype);
 184                                                    OpenSSL.writeString (bio, dbname);
 185                                                    sendOption OpenSSL.writeString (bio, encoding))
 186       | MsgNewMailbox {domain, user, passwd, mailbox} =>
 187         (OpenSSL.writeInt (bio, 18);
 188          OpenSSL.writeString (bio, domain);
 189          OpenSSL.writeString (bio, user);
 190          OpenSSL.writeString (bio, passwd);
 191          OpenSSL.writeString (bio, mailbox))
 192       | MsgPasswdMailbox {domain, user, passwd} =>
 193         (OpenSSL.writeInt (bio, 19);
 194          OpenSSL.writeString (bio, domain);
 195          OpenSSL.writeString (bio, user);
 196          OpenSSL.writeString (bio, passwd))
 197       | MsgRmMailbox {domain, user} =>
 198         (OpenSSL.writeInt (bio, 20);
 199          OpenSSL.writeString (bio, domain);
 200          OpenSSL.writeString (bio, user))
 201       | MsgListMailboxes domain =>
 202         (OpenSSL.writeInt (bio, 21);
 203          OpenSSL.writeString (bio, domain))
 204       | MsgMailboxes users =>
 205         (OpenSSL.writeInt (bio, 22);
 206          sendList (fn (bio, {user, mailbox}) =>
 207                             (OpenSSL.writeString (bio, user);
 208                              OpenSSL.writeString (bio, mailbox)))
 209          (bio, users))
 210       | MsgSaQuery addr => (OpenSSL.writeInt (bio, 23);
 211                             OpenSSL.writeString (bio, addr))
 212       | MsgSaStatus b => (OpenSSL.writeInt (bio, 24);
 213                           sendBool (bio, b))
 214       | MsgSaSet (addr, b) => (OpenSSL.writeInt (bio, 25);
 215                                OpenSSL.writeString (bio, addr);
 216                                sendBool (bio, b))
 217       | MsgSmtpLogReq domain => (OpenSSL.writeInt (bio, 26);
 218                                  OpenSSL.writeString (bio, domain))
 219       | MsgSmtpLogRes domain => (OpenSSL.writeInt (bio, 27);
 220                                  OpenSSL.writeString (bio, domain))
 221       | MsgDbPasswd {dbtype, passwd} => (OpenSSL.writeInt (bio, 28);
 222                                          OpenSSL.writeString (bio, dbtype);
 223                                          OpenSSL.writeString (bio, passwd))
 224       | MsgShutdown => OpenSSL.writeInt (bio, 29)
 225       | MsgYes => OpenSSL.writeInt (bio, 30)
 226       | MsgNo => OpenSSL.writeInt (bio, 31)
 227       | MsgQuery q => (OpenSSL.writeInt (bio, 32);
 228                        sendQuery (bio, q))
 229       | MsgSocket p => (OpenSSL.writeInt (bio, 33);
 230                         sendSockPerm (bio, p))
 231       | MsgFirewall ls => (OpenSSL.writeInt (bio, 34);
 232                            sendList OpenSSL.writeString (bio, ls))
 233       | MsgRegenerateTc => OpenSSL.writeInt (bio, 35)
 234       | MsgDropDb {dbtype, dbname} => (OpenSSL.writeInt (bio, 36);
 235                                        OpenSSL.writeString (bio, dbtype);
 236                                        OpenSSL.writeString (bio, dbname))
 237       | MsgGrantDb {dbtype, dbname} => (OpenSSL.writeInt (bio, 37);
 238                                         OpenSSL.writeString (bio, dbtype);
 239                                         OpenSSL.writeString (bio, dbname))
 240       | MsgMysqlFixperms => OpenSSL.writeInt (bio, 38)
 241       | MsgDescribe dom => (OpenSSL.writeInt (bio, 39);
 242                             OpenSSL.writeString (bio, dom))
 243       | MsgDescription s => (OpenSSL.writeInt (bio, 40);
 244                              OpenSSL.writeString (bio, s))
 245       | MsgReUsers => OpenSSL.writeInt (bio, 41)
 246       | MsgVmailChanged => OpenSSL.writeInt (bio, 42)
 247       | MsgFirewallRegen => OpenSSL.writeInt (bio, 43)
 248       | MsgAptQuery {section, description} => (OpenSSL.writeInt (bio, 44);
 249                                                OpenSSL.writeString (bio, section);
 250                                                OpenSSL.writeString (bio, description))
 251
 252 fun checkIt v =
 253     case v of
 254         NONE => raise OpenSSL.OpenSSL "Bad Msg format"
 255       | _ => v
 256
 257 fun recv bio =
 258     case OpenSSL.readInt bio of
 259         NONE => NONE
 260       | SOME n =>
 261         checkIt (case n of
 262                      1 => SOME MsgOk
 263                    | 2 => Option.map MsgError (OpenSSL.readString bio)
 264                    | 3 => Option.map MsgConfig (OpenSSL.readString bio)
 265                    | 4 => (case (OpenSSL.readInt bio,
 266                                  OpenSSL.readString bio,
 267                                  OpenSSL.readString bio,
 268                                  OpenSSL.readString bio) of
 269                                (SOME action, SOME domain, SOME dir, SOME file) =>
 270                                SOME (MsgFile {action = i2a action,
 271                                               domain = domain,
 272                                               dir = dir,
 273                                               file = file})
 274                              | _ => NONE)
 275                    | 5 => SOME MsgDoFiles
 276                    | 6 => (case recvAcl bio of
 277                                SOME acl => SOME (MsgGrant acl)
 278                              | _ => NONE)
 279                    | 7 => (case recvAcl bio of
 280                                SOME acl => SOME (MsgRevoke acl)
 281                              | _ => NONE)
 282                    | 8 => (case OpenSSL.readString bio of
 283                                SOME user => SOME (MsgListPerms user)
 284                              | _ => NONE)
 285                    | 9 => Option.map MsgPerms
 286                                      (recvList (fn bio =>
 287                                                    case (OpenSSL.readString bio,
 288                                                          recvList OpenSSL.readString bio) of
 289                                                        (SOME class, SOME values) => SOME (class, values)
 290                                                      | _ => NONE) bio)
 291                    | 10 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 292                                 (SOME class, SOME value) => SOME (MsgWhoHas {class = class, value = value})
 293                               | _ => NONE)
 294                    | 11 => Option.map MsgWhoHasResponse
 295                            (recvList OpenSSL.readString bio)
 296                    | 12 => Option.map MsgMultiConfig
 297                            (recvList OpenSSL.readString bio)
 298                    | 13 => Option.map MsgRmdom (recvList OpenSSL.readString bio)
 299                    | 14 => SOME MsgRegenerate
 300                    | 15 => Option.map MsgRmuser (OpenSSL.readString bio)
 301                    | 16 => (case (OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
 302                                 (SOME dbtype, SOME passwd) =>
 303                                 SOME (MsgCreateDbUser {dbtype = dbtype, passwd = passwd})
 304                               | _ => NONE)
 305                    | 17 => (case (OpenSSL.readString bio, OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
 306                                 (SOME dbtype, SOME dbname, SOME encoding) =>
 307                                 SOME (MsgCreateDb {dbtype = dbtype, dbname = dbname, encoding = encoding})
 308                               | _ => NONE)
 309                    | 18 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
 310                                   OpenSSL.readString bio, OpenSSL.readString bio) of
 311                                 (SOME domain, SOME user, SOME passwd, SOME mailbox) =>
 312                                 SOME (MsgNewMailbox {domain = domain, user = user,
 313                                                      passwd = passwd, mailbox = mailbox})
 314                               | _ => NONE)
 315                    | 19 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
 316                                   OpenSSL.readString bio) of
 317                                 (SOME domain, SOME user, SOME passwd) =>
 318                                 SOME (MsgPasswdMailbox {domain = domain, user = user,
 319                                                         passwd = passwd})
 320                               | _ => NONE)
 321                    | 20 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 322                                 (SOME domain, SOME user) =>
 323                                 SOME (MsgRmMailbox {domain = domain, user = user})
 324                               | _ => NONE)
 325                    | 21 => Option.map MsgListMailboxes (OpenSSL.readString bio)
 326                    | 22 => Option.map MsgMailboxes (recvList
 327                                                         (fn bio =>
 328                                                             case (OpenSSL.readString bio,
 329                                                                   OpenSSL.readString bio) of
 330                                                                 (SOME user, SOME mailbox) =>
 331                                                                 SOME {user = user, mailbox = mailbox}
 332                                                               | _ => NONE)
 333                                                         bio)
 334                    | 23 => Option.map MsgSaQuery (OpenSSL.readString bio)
 335                    | 24 => Option.map MsgSaStatus (recvBool bio)
 336                    | 25 => (case (OpenSSL.readString bio, recvBool bio) of
 337                                 (SOME user, SOME b) => SOME (MsgSaSet (user, b))
 338                               | _ => NONE)
 339                    | 26 => Option.map MsgSmtpLogReq (OpenSSL.readString bio)
 340                    | 27 => Option.map MsgSmtpLogRes (OpenSSL.readString bio)
 341                    | 28 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 342                                 (SOME dbtype, SOME passwd) =>
 343                                 SOME (MsgDbPasswd {dbtype = dbtype, passwd = passwd})
 344                               | _ => NONE)
 345                    | 29 => SOME MsgShutdown
 346                    | 30 => SOME MsgYes
 347                    | 31 => SOME MsgNo
 348                    | 32 => Option.map MsgQuery (recvQuery bio)
 349                    | 33 => Option.map MsgSocket (recvSockPerm bio)
 350                    | 34 => Option.map MsgFirewall (recvList OpenSSL.readString bio)
 351                    | 35 => SOME MsgRegenerateTc
 352                    | 36 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 353                                 (SOME dbtype, SOME dbname) =>
 354                                 SOME (MsgDropDb {dbtype = dbtype, dbname = dbname})
 355                               | _ => NONE)
 356                    | 37 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 357                                 (SOME dbtype, SOME dbname) =>
 358                                 SOME (MsgGrantDb {dbtype = dbtype, dbname = dbname})
 359                               | _ => NONE)
 360                    | 38 => SOME MsgMysqlFixperms
 361                    | 39 => Option.map MsgDescribe (OpenSSL.readString bio)
 362                    | 40 => Option.map MsgDescription (OpenSSL.readString bio)
 363                    | 41 => SOME MsgReUsers
 364                    | 42 => SOME MsgVmailChanged
 365                    | 43 => SOME MsgFirewallRegen
 366                    | 44 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 367                                 (SOME section, SOME description) => SOME (MsgAptQuery {section = section, description = description})
 368                               | _ => NONE)
 369                    | _ => NONE)
 370
 371 end