src/msg.sml

   1 (* HCoop Domtool (http://hcoop.sourceforge.net/)
   2  * Copyright (c) 2006, Adam Chlipala
   3  * Copyright (c) 2011,2014 Clinton Ebadi <clinton@unknownlamer.org>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; either version 2
   8  * of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  *)
  19
  20 (* Network messages *)
  21
  22 structure Msg :> MSG = struct
  23
  24 open OpenSSL MsgTypes Slave
  25
  26 val a2i = fn Add => 0
  27            | Delete true => 1
  28            | Modify => 2
  29            | Delete false => 3
  30
  31 val i2a = fn 0 => Add
  32            | 1 => Delete true
  33            | 2 => Modify
  34            | 3 => Delete false
  35            | _ => raise OpenSSL.OpenSSL "Bad action number to deserialize"
  36
  37 fun sendAcl (bio, {user, class, value}) =
  38     (OpenSSL.writeString (bio, user);
  39      OpenSSL.writeString (bio, class);
  40      OpenSSL.writeString (bio, value))
  41
  42 fun recvAcl bio =
  43     case (OpenSSL.readString bio, OpenSSL.readString bio, OpenSSL.readString bio) of
  44         (SOME user, SOME class, SOME value) => SOME {user = user, class = class, value = value}
  45       | _ => NONE
  46
  47 fun sendList f (bio, ls) =
  48     (app (fn x =>
  49              (OpenSSL.writeInt (bio, 1);
  50               f (bio, x))) ls;
  51      OpenSSL.writeInt (bio, 0))
  52
  53 fun recvList f bio =
  54     let
  55         fun loop ls =
  56             case OpenSSL.readInt bio of
  57                 SOME 0 => SOME (rev ls)
  58               | SOME 1 =>
  59                 (case f bio of
  60                      SOME x => loop (x :: ls)
  61                    | NONE => NONE)
  62               | _ => NONE
  63     in
  64         loop []
  65     end
  66
  67 fun sendOption f (bio, opt) =
  68     case opt of
  69         NONE => OpenSSL.writeInt (bio, 0)
  70       | SOME x => (OpenSSL.writeInt (bio, 1);
  71                    f (bio, x))
  72
  73 fun recvOption f bio =
  74     case OpenSSL.readInt bio of
  75         SOME 0 => SOME NONE
  76       | SOME 1 =>
  77         (case f bio of
  78              SOME x => SOME (SOME x)
  79            | NONE => NONE)
  80       | _ => NONE
  81
  82 fun sendBool (bio, b) =
  83     if b then
  84         OpenSSL.writeInt (bio, 1)
  85     else
  86         OpenSSL.writeInt (bio, 0)
  87
  88 fun recvBool bio =
  89     case OpenSSL.readInt bio of
  90         SOME 0 => SOME false
  91       | SOME 1 => SOME true
  92       | _ => NONE
  93
  94 fun sendSockPerm (bio, p) =
  95     case p of
  96         Any => OpenSSL.writeInt (bio, 0)
  97       | Client => OpenSSL.writeInt (bio, 1)
  98       | Server => OpenSSL.writeInt (bio, 2)
  99       | Nada => OpenSSL.writeInt (bio, 3)
 100
 101 fun recvSockPerm bio =
 102     case OpenSSL.readInt bio of
 103         SOME 0 => SOME Any
 104       | SOME 1 => SOME Client
 105       | SOME 2 => SOME Server
 106       | SOME 3 => SOME Nada
 107       | _ => NONE
 108
 109 fun sendQuery (bio, q) =
 110     case q of
 111         QApt s => (OpenSSL.writeInt (bio, 0);
 112                    OpenSSL.writeString (bio, s))
 113       | QCron s => (OpenSSL.writeInt (bio, 1);
 114                     OpenSSL.writeString (bio, s))
 115       | QFtp s => (OpenSSL.writeInt (bio, 2);
 116                    OpenSSL.writeString (bio, s))
 117       | QTrustedPath s => (OpenSSL.writeInt (bio, 3);
 118                            OpenSSL.writeString (bio, s))
 119       | QSocket s => (OpenSSL.writeInt (bio, 4);
 120                       OpenSSL.writeString (bio, s))
 121       | QFirewall {node, user} => (OpenSSL.writeInt (bio, 5);
 122                                    OpenSSL.writeString (bio, node);
 123                                    OpenSSL.writeString (bio, user))
 124       | QAptExists s => (OpenSSL.writeInt (bio, 6);
 125                          OpenSSL.writeString (bio, s))
 126
 127 fun recvQuery bio =
 128     case OpenSSL.readInt bio of
 129         SOME n =>
 130         (case n of
 131              0 => Option.map QApt (OpenSSL.readString bio)
 132            | 1 => Option.map QCron (OpenSSL.readString bio)
 133            | 2 => Option.map QFtp (OpenSSL.readString bio)
 134            | 3 => Option.map QTrustedPath (OpenSSL.readString bio)
 135            | 4 => Option.map QSocket (OpenSSL.readString bio)
 136            | 5 => (case ((OpenSSL.readString bio), (OpenSSL.readString bio)) of
 137                       (SOME node, SOME user) => SOME (QFirewall { node = node, user = user })
 138                     | _ => NONE)
 139            | 6 => Option.map QAptExists (OpenSSL.readString bio)
 140            | _ => NONE)
 141       | NONE => NONE
 142
 143 fun send (bio, m) =
 144     case m of
 145         MsgOk => OpenSSL.writeInt (bio, 1)
 146       | MsgError s => (OpenSSL.writeInt (bio, 2);
 147                        OpenSSL.writeString (bio, s))
 148       | MsgConfig s => (OpenSSL.writeInt (bio, 3);
 149                        OpenSSL.writeString (bio, s))
 150       | MsgFile {action, domain, dir, file} =>
 151         (OpenSSL.writeInt (bio, 4);
 152          OpenSSL.writeInt (bio, a2i action);
 153          OpenSSL.writeString (bio, domain);
 154          OpenSSL.writeString (bio, dir);
 155          OpenSSL.writeString (bio, file))
 156       | MsgDoFiles => OpenSSL.writeInt (bio, 5)
 157       | MsgGrant acl => (OpenSSL.writeInt (bio, 6);
 158                          sendAcl (bio, acl))
 159       | MsgRevoke acl => (OpenSSL.writeInt (bio, 7);
 160                           sendAcl (bio, acl))
 161       | MsgListPerms user => (OpenSSL.writeInt (bio, 8);
 162                               OpenSSL.writeString (bio, user))
 163       | MsgPerms classes => (OpenSSL.writeInt (bio, 9);
 164                              sendList (fn (bio, (class, values)) =>
 165                                           (OpenSSL.writeString (bio, class);
 166                                            sendList OpenSSL.writeString (bio, values)))
 167                                       (bio, classes))
 168       | MsgWhoHas {class, value} => (OpenSSL.writeInt (bio, 10);
 169                                      OpenSSL.writeString (bio, class);
 170                                      OpenSSL.writeString (bio, value))
 171       | MsgWhoHasResponse users => (OpenSSL.writeInt (bio, 11);
 172                                     sendList OpenSSL.writeString (bio, users))
 173       | MsgMultiConfig codes => (OpenSSL.writeInt (bio, 12);
 174                                  sendList OpenSSL.writeString (bio, codes))
 175       | MsgRmdom doms => (OpenSSL.writeInt (bio, 13);
 176                           sendList OpenSSL.writeString (bio, doms))
 177       | MsgRegenerate => OpenSSL.writeInt (bio, 14)
 178       | MsgRmuser dom => (OpenSSL.writeInt (bio, 15);
 179                           OpenSSL.writeString (bio, dom))
 180       | MsgCreateDbUser {dbtype, passwd} => (OpenSSL.writeInt (bio, 16);
 181                                              OpenSSL.writeString (bio, dbtype);
 182                                              sendOption OpenSSL.writeString (bio, passwd))
 183       | MsgCreateDb {dbtype, dbname, encoding} => (OpenSSL.writeInt (bio, 17);
 184                                                    OpenSSL.writeString (bio, dbtype);
 185                                                    OpenSSL.writeString (bio, dbname);
 186                                                    sendOption OpenSSL.writeString (bio, encoding))
 187       | MsgNewMailbox {domain, user, passwd, mailbox} =>
 188         (OpenSSL.writeInt (bio, 18);
 189          OpenSSL.writeString (bio, domain);
 190          OpenSSL.writeString (bio, user);
 191          OpenSSL.writeString (bio, passwd);
 192          OpenSSL.writeString (bio, mailbox))
 193       | MsgPasswdMailbox {domain, user, passwd} =>
 194         (OpenSSL.writeInt (bio, 19);
 195          OpenSSL.writeString (bio, domain);
 196          OpenSSL.writeString (bio, user);
 197          OpenSSL.writeString (bio, passwd))
 198       | MsgRmMailbox {domain, user} =>
 199         (OpenSSL.writeInt (bio, 20);
 200          OpenSSL.writeString (bio, domain);
 201          OpenSSL.writeString (bio, user))
 202       | MsgListMailboxes domain =>
 203         (OpenSSL.writeInt (bio, 21);
 204          OpenSSL.writeString (bio, domain))
 205       | MsgMailboxes users =>
 206         (OpenSSL.writeInt (bio, 22);
 207          sendList (fn (bio, {user, mailbox}) =>
 208                             (OpenSSL.writeString (bio, user);
 209                              OpenSSL.writeString (bio, mailbox)))
 210          (bio, users))
 211       | MsgSaQuery addr => (OpenSSL.writeInt (bio, 23);
 212                             OpenSSL.writeString (bio, addr))
 213       | MsgSaStatus b => (OpenSSL.writeInt (bio, 24);
 214                           sendBool (bio, b))
 215       | MsgSaSet (addr, b) => (OpenSSL.writeInt (bio, 25);
 216                                OpenSSL.writeString (bio, addr);
 217                                sendBool (bio, b))
 218       | MsgSmtpLogReq domain => (OpenSSL.writeInt (bio, 26);
 219                                  OpenSSL.writeString (bio, domain))
 220       | MsgSmtpLogRes domain => (OpenSSL.writeInt (bio, 27);
 221                                  OpenSSL.writeString (bio, domain))
 222       | MsgDbPasswd {dbtype, passwd} => (OpenSSL.writeInt (bio, 28);
 223                                          OpenSSL.writeString (bio, dbtype);
 224                                          OpenSSL.writeString (bio, passwd))
 225       | MsgShutdown => OpenSSL.writeInt (bio, 29)
 226       | MsgYes => OpenSSL.writeInt (bio, 30)
 227       | MsgNo => OpenSSL.writeInt (bio, 31)
 228       | MsgQuery q => (OpenSSL.writeInt (bio, 32);
 229                        sendQuery (bio, q))
 230       | MsgSocket p => (OpenSSL.writeInt (bio, 33);
 231                         sendSockPerm (bio, p))
 232       | MsgFirewall ls => (OpenSSL.writeInt (bio, 34);
 233                            sendList OpenSSL.writeString (bio, ls))
 234       | MsgRegenerateTc => OpenSSL.writeInt (bio, 35)
 235       | MsgDropDb {dbtype, dbname} => (OpenSSL.writeInt (bio, 36);
 236                                        OpenSSL.writeString (bio, dbtype);
 237                                        OpenSSL.writeString (bio, dbname))
 238       | MsgGrantDb {dbtype, dbname} => (OpenSSL.writeInt (bio, 37);
 239                                         OpenSSL.writeString (bio, dbtype);
 240                                         OpenSSL.writeString (bio, dbname))
 241       | MsgMysqlFixperms => OpenSSL.writeInt (bio, 38)
 242       | MsgDescribe dom => (OpenSSL.writeInt (bio, 39);
 243                             OpenSSL.writeString (bio, dom))
 244       | MsgDescription s => (OpenSSL.writeInt (bio, 40);
 245                              OpenSSL.writeString (bio, s))
 246       | MsgReUsers => OpenSSL.writeInt (bio, 41)
 247       | MsgVmailChanged => OpenSSL.writeInt (bio, 42)
 248       | MsgFirewallRegen => OpenSSL.writeInt (bio, 43)
 249       | MsgAptQuery {section, description} => (OpenSSL.writeInt (bio, 44);
 250                                                OpenSSL.writeString (bio, section);
 251                                                OpenSSL.writeString (bio, description))
 252
 253 fun checkIt v =
 254     case v of
 255         NONE => raise OpenSSL.OpenSSL "Bad Msg format"
 256       | _ => v
 257
 258 fun recv bio =
 259     case OpenSSL.readInt bio of
 260         NONE => NONE
 261       | SOME n =>
 262         checkIt (case n of
 263                      1 => SOME MsgOk
 264                    | 2 => Option.map MsgError (OpenSSL.readString bio)
 265                    | 3 => Option.map MsgConfig (OpenSSL.readString bio)
 266                    | 4 => (case (OpenSSL.readInt bio,
 267                                  OpenSSL.readString bio,
 268                                  OpenSSL.readString bio,
 269                                  OpenSSL.readString bio) of
 270                                (SOME action, SOME domain, SOME dir, SOME file) =>
 271                                SOME (MsgFile {action = i2a action,
 272                                               domain = domain,
 273                                               dir = dir,
 274                                               file = file})
 275                              | _ => NONE)
 276                    | 5 => SOME MsgDoFiles
 277                    | 6 => (case recvAcl bio of
 278                                SOME acl => SOME (MsgGrant acl)
 279                              | _ => NONE)
 280                    | 7 => (case recvAcl bio of
 281                                SOME acl => SOME (MsgRevoke acl)
 282                              | _ => NONE)
 283                    | 8 => (case OpenSSL.readString bio of
 284                                SOME user => SOME (MsgListPerms user)
 285                              | _ => NONE)
 286                    | 9 => Option.map MsgPerms
 287                                      (recvList (fn bio =>
 288                                                    case (OpenSSL.readString bio,
 289                                                          recvList OpenSSL.readString bio) of
 290                                                        (SOME class, SOME values) => SOME (class, values)
 291                                                      | _ => NONE) bio)
 292                    | 10 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 293                                 (SOME class, SOME value) => SOME (MsgWhoHas {class = class, value = value})
 294                               | _ => NONE)
 295                    | 11 => Option.map MsgWhoHasResponse
 296                            (recvList OpenSSL.readString bio)
 297                    | 12 => Option.map MsgMultiConfig
 298                            (recvList OpenSSL.readString bio)
 299                    | 13 => Option.map MsgRmdom (recvList OpenSSL.readString bio)
 300                    | 14 => SOME MsgRegenerate
 301                    | 15 => Option.map MsgRmuser (OpenSSL.readString bio)
 302                    | 16 => (case (OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
 303                                 (SOME dbtype, SOME passwd) =>
 304                                 SOME (MsgCreateDbUser {dbtype = dbtype, passwd = passwd})
 305                               | _ => NONE)
 306                    | 17 => (case (OpenSSL.readString bio, OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
 307                                 (SOME dbtype, SOME dbname, SOME encoding) =>
 308                                 SOME (MsgCreateDb {dbtype = dbtype, dbname = dbname, encoding = encoding})
 309                               | _ => NONE)
 310                    | 18 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
 311                                   OpenSSL.readString bio, OpenSSL.readString bio) of
 312                                 (SOME domain, SOME user, SOME passwd, SOME mailbox) =>
 313                                 SOME (MsgNewMailbox {domain = domain, user = user,
 314                                                      passwd = passwd, mailbox = mailbox})
 315                               | _ => NONE)
 316                    | 19 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
 317                                   OpenSSL.readString bio) of
 318                                 (SOME domain, SOME user, SOME passwd) =>
 319                                 SOME (MsgPasswdMailbox {domain = domain, user = user,
 320                                                         passwd = passwd})
 321                               | _ => NONE)
 322                    | 20 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 323                                 (SOME domain, SOME user) =>
 324                                 SOME (MsgRmMailbox {domain = domain, user = user})
 325                               | _ => NONE)
 326                    | 21 => Option.map MsgListMailboxes (OpenSSL.readString bio)
 327                    | 22 => Option.map MsgMailboxes (recvList
 328                                                         (fn bio =>
 329                                                             case (OpenSSL.readString bio,
 330                                                                   OpenSSL.readString bio) of
 331                                                                 (SOME user, SOME mailbox) =>
 332                                                                 SOME {user = user, mailbox = mailbox}
 333                                                               | _ => NONE)
 334                                                         bio)
 335                    | 23 => Option.map MsgSaQuery (OpenSSL.readString bio)
 336                    | 24 => Option.map MsgSaStatus (recvBool bio)
 337                    | 25 => (case (OpenSSL.readString bio, recvBool bio) of
 338                                 (SOME user, SOME b) => SOME (MsgSaSet (user, b))
 339                               | _ => NONE)
 340                    | 26 => Option.map MsgSmtpLogReq (OpenSSL.readString bio)
 341                    | 27 => Option.map MsgSmtpLogRes (OpenSSL.readString bio)
 342                    | 28 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 343                                 (SOME dbtype, SOME passwd) =>
 344                                 SOME (MsgDbPasswd {dbtype = dbtype, passwd = passwd})
 345                               | _ => NONE)
 346                    | 29 => SOME MsgShutdown
 347                    | 30 => SOME MsgYes
 348                    | 31 => SOME MsgNo
 349                    | 32 => Option.map MsgQuery (recvQuery bio)
 350                    | 33 => Option.map MsgSocket (recvSockPerm bio)
 351                    | 34 => Option.map MsgFirewall (recvList OpenSSL.readString bio)
 352                    | 35 => SOME MsgRegenerateTc
 353                    | 36 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 354                                 (SOME dbtype, SOME dbname) =>
 355                                 SOME (MsgDropDb {dbtype = dbtype, dbname = dbname})
 356                               | _ => NONE)
 357                    | 37 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 358                                 (SOME dbtype, SOME dbname) =>
 359                                 SOME (MsgGrantDb {dbtype = dbtype, dbname = dbname})
 360                               | _ => NONE)
 361                    | 38 => SOME MsgMysqlFixperms
 362                    | 39 => Option.map MsgDescribe (OpenSSL.readString bio)
 363                    | 40 => Option.map MsgDescription (OpenSSL.readString bio)
 364                    | 41 => SOME MsgReUsers
 365                    | 42 => SOME MsgVmailChanged
 366                    | 43 => SOME MsgFirewallRegen
 367                    | 44 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
 368                                 (SOME section, SOME description) => SOME (MsgAptQuery {section = section, description = description})
 369                               | _ => NONE)
 370                    | _ => NONE)
 371
 372 end