src/msg.sml

(* HCoop Domtool (http://hcoop.sourceforge.net/)
 * Copyright (c) 2006, Adam Chlipala
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *)

(* Network messages *)

structure Msg :> MSG = struct

open OpenSSL MsgTypes Slave

val a2i = fn Add => 0
	   | Delete true => 1
	   | Modify => 2
	   | Delete false => 3

val i2a = fn 0 => Add
	   | 1 => Delete true
	   | 2 => Modify
	   | 3 => Delete false
	   | _ => raise OpenSSL.OpenSSL "Bad action number to deserialize"

fun sendAcl (bio, {user, class, value}) =
    (OpenSSL.writeString (bio, user);
     OpenSSL.writeString (bio, class);
     OpenSSL.writeString (bio, value))

fun recvAcl bio =
    case (OpenSSL.readString bio, OpenSSL.readString bio, OpenSSL.readString bio) of
	(SOME user, SOME class, SOME value) => SOME {user = user, class = class, value = value}
      | _ => NONE

fun sendList f (bio, ls) =
    (app (fn x =>
	     (OpenSSL.writeInt (bio, 1);
	      f (bio, x))) ls;
     OpenSSL.writeInt (bio, 0))

fun recvList f bio =
    let
	fun loop ls =
	    case OpenSSL.readInt bio of
		SOME 0 => SOME (rev ls)
	      | SOME 1 =>
		(case f bio of
		     SOME x => loop (x :: ls)
		   | NONE => NONE)
	      | _ => NONE
    in
	loop []
    end

fun sendOption f (bio, opt) =
    case opt of
	NONE => OpenSSL.writeInt (bio, 0)
      | SOME x => (OpenSSL.writeInt (bio, 1);
		   f (bio, x))

fun recvOption f bio =
    case OpenSSL.readInt bio of
	SOME 0 => SOME NONE
      | SOME 1 =>
	(case f bio of
	     SOME x => SOME (SOME x)
	   | NONE => NONE)
      | _ => NONE

fun sendBool (bio, b) =
    if b then
	OpenSSL.writeInt (bio, 1)
    else
	OpenSSL.writeInt (bio, 0)

fun recvBool bio =
    case OpenSSL.readInt bio of
	SOME 0 => SOME false
      | SOME 1 => SOME true
      | _ => NONE

fun sendSockPerm (bio, p) =
    case p of
	Any => OpenSSL.writeInt (bio, 0)
      | Client => OpenSSL.writeInt (bio, 1)
      | Server => OpenSSL.writeInt (bio, 2)
      | Nada => OpenSSL.writeInt (bio, 3)

fun recvSockPerm bio =
    case OpenSSL.readInt bio of
	SOME 0 => SOME Any
      | SOME 1 => SOME Client
      | SOME 2 => SOME Server
      | SOME 3 => SOME Nada
      | _ => NONE

fun sendQuery (bio, q) =
    case q of
	QApt s => (OpenSSL.writeInt (bio, 0);
		   OpenSSL.writeString (bio, s))
      | QCron s => (OpenSSL.writeInt (bio, 1);
		    OpenSSL.writeString (bio, s))
      | QFtp s => (OpenSSL.writeInt (bio, 2);
		   OpenSSL.writeString (bio, s))
      | QTrustedPath s => (OpenSSL.writeInt (bio, 3);
			   OpenSSL.writeString (bio, s))
      | QSocket s => (OpenSSL.writeInt (bio, 4);
		      OpenSSL.writeString (bio, s))
      | QFirewall s => (OpenSSL.writeInt (bio, 5);
			OpenSSL.writeString (bio, s))

fun recvQuery bio =
    case OpenSSL.readInt bio of
	SOME n =>
	(case n of
	     0 => Option.map QApt (OpenSSL.readString bio)
	   | 1 => Option.map QCron (OpenSSL.readString bio)
	   | 2 => Option.map QFtp (OpenSSL.readString bio)
	   | 3 => Option.map QTrustedPath (OpenSSL.readString bio)
	   | 4 => Option.map QSocket (OpenSSL.readString bio)
	   | 5 => Option.map QFirewall (OpenSSL.readString bio)
	   | _ => NONE)
      | NONE => NONE

fun send (bio, m) =
    case m of
	MsgOk => OpenSSL.writeInt (bio, 1)
      | MsgError s => (OpenSSL.writeInt (bio, 2);
		       OpenSSL.writeString (bio, s))
      | MsgConfig s => (OpenSSL.writeInt (bio, 3);
		       OpenSSL.writeString (bio, s))
      | MsgFile {action, domain, dir, file} =>
	(OpenSSL.writeInt (bio, 4);
	 OpenSSL.writeInt (bio, a2i action);
	 OpenSSL.writeString (bio, domain);
	 OpenSSL.writeString (bio, dir);
	 OpenSSL.writeString (bio, file))
      | MsgDoFiles => OpenSSL.writeInt (bio, 5)
      | MsgGrant acl => (OpenSSL.writeInt (bio, 6);
			 sendAcl (bio, acl))
      | MsgRevoke acl => (OpenSSL.writeInt (bio, 7);
			  sendAcl (bio, acl))
      | MsgListPerms user => (OpenSSL.writeInt (bio, 8);
			      OpenSSL.writeString (bio, user))
      | MsgPerms classes => (OpenSSL.writeInt (bio, 9);
			     sendList (fn (bio, (class, values)) =>
					  (OpenSSL.writeString (bio, class);
					   sendList OpenSSL.writeString (bio, values)))
				      (bio, classes))
      | MsgWhoHas {class, value} => (OpenSSL.writeInt (bio, 10);
				     OpenSSL.writeString (bio, class);
				     OpenSSL.writeString (bio, value))
      | MsgWhoHasResponse users => (OpenSSL.writeInt (bio, 11);
				    sendList OpenSSL.writeString (bio, users))
      | MsgMultiConfig codes => (OpenSSL.writeInt (bio, 12);
				 sendList OpenSSL.writeString (bio, codes))
      | MsgRmdom doms => (OpenSSL.writeInt (bio, 13);
			  sendList OpenSSL.writeString (bio, doms))
      | MsgRegenerate => OpenSSL.writeInt (bio, 14)
      | MsgRmuser dom => (OpenSSL.writeInt (bio, 15);
			  OpenSSL.writeString (bio, dom))
      | MsgCreateDbUser {dbtype, passwd} => (OpenSSL.writeInt (bio, 16);
					     OpenSSL.writeString (bio, dbtype);
					     sendOption OpenSSL.writeString (bio, passwd))
      | MsgCreateDb {dbtype, dbname, encoding} => (OpenSSL.writeInt (bio, 17);
						   OpenSSL.writeString (bio, dbtype);
						   OpenSSL.writeString (bio, dbname);
						   sendOption OpenSSL.writeString (bio, encoding))
      | MsgNewMailbox {domain, user, passwd, mailbox} =>
	(OpenSSL.writeInt (bio, 18);
	 OpenSSL.writeString (bio, domain);
	 OpenSSL.writeString (bio, user);
	 OpenSSL.writeString (bio, passwd);
	 OpenSSL.writeString (bio, mailbox))
      | MsgPasswdMailbox {domain, user, passwd} =>
	(OpenSSL.writeInt (bio, 19);
	 OpenSSL.writeString (bio, domain);
	 OpenSSL.writeString (bio, user);
	 OpenSSL.writeString (bio, passwd))
      | MsgRmMailbox {domain, user} =>
	(OpenSSL.writeInt (bio, 20);
	 OpenSSL.writeString (bio, domain);
	 OpenSSL.writeString (bio, user))
      | MsgListMailboxes domain =>
	(OpenSSL.writeInt (bio, 21);
	 OpenSSL.writeString (bio, domain))
      | MsgMailboxes users =>
	(OpenSSL.writeInt (bio, 22);
	 sendList (fn (bio, {user, mailbox}) =>
			    (OpenSSL.writeString (bio, user);
			     OpenSSL.writeString (bio, mailbox)))
	 (bio, users))
      | MsgSaQuery addr => (OpenSSL.writeInt (bio, 23);
			    OpenSSL.writeString (bio, addr))
      | MsgSaStatus b => (OpenSSL.writeInt (bio, 24);
			  sendBool (bio, b))
      | MsgSaSet (addr, b) => (OpenSSL.writeInt (bio, 25);
			       OpenSSL.writeString (bio, addr);
			       sendBool (bio, b))
      | MsgSmtpLogReq domain => (OpenSSL.writeInt (bio, 26);
				 OpenSSL.writeString (bio, domain))
      | MsgSmtpLogRes domain => (OpenSSL.writeInt (bio, 27);
				 OpenSSL.writeString (bio, domain))
      | MsgDbPasswd {dbtype, passwd} => (OpenSSL.writeInt (bio, 28);
					 OpenSSL.writeString (bio, dbtype);
					 OpenSSL.writeString (bio, passwd))
      | MsgShutdown => OpenSSL.writeInt (bio, 29)
      | MsgYes => OpenSSL.writeInt (bio, 30)
      | MsgNo => OpenSSL.writeInt (bio, 31)
      | MsgQuery q => (OpenSSL.writeInt (bio, 32);
		       sendQuery (bio, q))
      | MsgSocket p => (OpenSSL.writeInt (bio, 33);
			sendSockPerm (bio, p))
      | MsgFirewall ls => (OpenSSL.writeInt (bio, 34);
			   sendList OpenSSL.writeString (bio, ls))
      | MsgRegenerateTc => OpenSSL.writeInt (bio, 35)
      | MsgDropDb {dbtype, dbname} => (OpenSSL.writeInt (bio, 36);
				       OpenSSL.writeString (bio, dbtype);
				       OpenSSL.writeString (bio, dbname))
      | MsgGrantDb {dbtype, dbname} => (OpenSSL.writeInt (bio, 37);
					OpenSSL.writeString (bio, dbtype);
					OpenSSL.writeString (bio, dbname))
      | MsgMysqlFixperms => OpenSSL.writeInt (bio, 38)
      | MsgDescribe dom => (OpenSSL.writeInt (bio, 39);
			    OpenSSL.writeString (bio, dom))
      | MsgDescription s => (OpenSSL.writeInt (bio, 40);
			     OpenSSL.writeString (bio, s))

fun checkIt v =
    case v of
	NONE => raise OpenSSL.OpenSSL "Bad Msg format"
      | _ => v

fun recv bio =
    case OpenSSL.readInt bio of
	NONE => NONE
      | SOME n =>
	checkIt (case n of
		     1 => SOME MsgOk
		   | 2 => Option.map MsgError (OpenSSL.readString bio)
		   | 3 => Option.map MsgConfig (OpenSSL.readString bio)
		   | 4 => (case (OpenSSL.readInt bio,
				 OpenSSL.readString bio,
				 OpenSSL.readString bio,
				 OpenSSL.readString bio) of
			       (SOME action, SOME domain, SOME dir, SOME file) =>
			       SOME (MsgFile {action = i2a action,
					      domain = domain,
					      dir = dir,
					      file = file})
			     | _ => NONE)
		   | 5 => SOME MsgDoFiles
		   | 6 => (case recvAcl bio of
			       SOME acl => SOME (MsgGrant acl)
			     | _ => NONE)
		   | 7 => (case recvAcl bio of
			       SOME acl => SOME (MsgRevoke acl)
			     | _ => NONE)
		   | 8 => (case OpenSSL.readString bio of
			       SOME user => SOME (MsgListPerms user)
			     | _ => NONE)
		   | 9 => Option.map MsgPerms
				     (recvList (fn bio =>
						   case (OpenSSL.readString bio,
							 recvList OpenSSL.readString bio) of
						       (SOME class, SOME values) => SOME (class, values)
						     | _ => NONE) bio)
		   | 10 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
				(SOME class, SOME value) => SOME (MsgWhoHas {class = class, value = value})
			      | _ => NONE)
		   | 11 => Option.map MsgWhoHasResponse
			   (recvList OpenSSL.readString bio)
		   | 12 => Option.map MsgMultiConfig
			   (recvList OpenSSL.readString bio)
		   | 13 => Option.map MsgRmdom (recvList OpenSSL.readString bio)
		   | 14 => SOME MsgRegenerate
		   | 15 => Option.map MsgRmuser (OpenSSL.readString bio)
		   | 16 => (case (OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
				(SOME dbtype, SOME passwd) =>
				SOME (MsgCreateDbUser {dbtype = dbtype, passwd = passwd})
			      | _ => NONE)
		   | 17 => (case (OpenSSL.readString bio, OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
				(SOME dbtype, SOME dbname, SOME encoding) =>
				SOME (MsgCreateDb {dbtype = dbtype, dbname = dbname, encoding = encoding})
			      | _ => NONE)
		   | 18 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
				  OpenSSL.readString bio, OpenSSL.readString bio) of
				(SOME domain, SOME user, SOME passwd, SOME mailbox) =>
				SOME (MsgNewMailbox {domain = domain, user = user,
						     passwd = passwd, mailbox = mailbox})
			      | _ => NONE)
		   | 19 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
				  OpenSSL.readString bio) of
				(SOME domain, SOME user, SOME passwd) =>
				SOME (MsgPasswdMailbox {domain = domain, user = user,
							passwd = passwd})
			      | _ => NONE)
		   | 20 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
				(SOME domain, SOME user) =>
				SOME (MsgRmMailbox {domain = domain, user = user})
			      | _ => NONE)
		   | 21 => Option.map MsgListMailboxes (OpenSSL.readString bio)
		   | 22 => Option.map MsgMailboxes (recvList
							(fn bio =>
							    case (OpenSSL.readString bio,
								  OpenSSL.readString bio) of
								(SOME user, SOME mailbox) =>
								SOME {user = user, mailbox = mailbox}
							      | _ => NONE)
							bio)
		   | 23 => Option.map MsgSaQuery (OpenSSL.readString bio)
		   | 24 => Option.map MsgSaStatus (recvBool bio)
		   | 25 => (case (OpenSSL.readString bio, recvBool bio) of
				(SOME user, SOME b) => SOME (MsgSaSet (user, b))
			      | _ => NONE)
		   | 26 => Option.map MsgSmtpLogReq (OpenSSL.readString bio)
		   | 27 => Option.map MsgSmtpLogRes (OpenSSL.readString bio)
		   | 28 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
				(SOME dbtype, SOME passwd) =>
				SOME (MsgDbPasswd {dbtype = dbtype, passwd = passwd})
			      | _ => NONE)
		   | 29 => SOME MsgShutdown
		   | 30 => SOME MsgYes
		   | 31 => SOME MsgNo
		   | 32 => Option.map MsgQuery (recvQuery bio)
		   | 33 => Option.map MsgSocket (recvSockPerm bio)
		   | 34 => Option.map MsgFirewall (recvList OpenSSL.readString bio)
		   | 35 => SOME MsgRegenerateTc
		   | 36 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
				(SOME dbtype, SOME dbname) =>
				SOME (MsgDropDb {dbtype = dbtype, dbname = dbname})
			      | _ => NONE)
		   | 37 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
				(SOME dbtype, SOME dbname) =>
				SOME (MsgGrantDb {dbtype = dbtype, dbname = dbname})
			      | _ => NONE)
		   | 38 => SOME MsgMysqlFixperms
		   | 39 => Option.map MsgDescribe (OpenSSL.readString bio)
		   | 40 => Option.map MsgDescription (OpenSSL.readString bio)
		   | _ => NONE)

end
Commit	Line	Data
	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
	240	fun checkIt v =
	241	case v of
	242	NONE => raise OpenSSL.OpenSSL "Bad Msg format"
	243	\| _ => v
	244
	245	fun recv bio =
	246	case OpenSSL.readInt bio of
	247	NONE => NONE
	248	\| SOME n =>
	249	checkIt (case n of
	250	1 => SOME MsgOk
	251	\| 2 => Option.map MsgError (OpenSSL.readString bio)
	252	\| 3 => Option.map MsgConfig (OpenSSL.readString bio)
	253	\| 4 => (case (OpenSSL.readInt bio,
	254	OpenSSL.readString bio,
	255	OpenSSL.readString bio,
	256	OpenSSL.readString bio) of
	257	(SOME action, SOME domain, SOME dir, SOME file) =>
	258	SOME (MsgFile {action = i2a action,
	259	domain = domain,
	260	dir = dir,
	261	file = file})
	262	\| _ => NONE)
	263	\| 5 => SOME MsgDoFiles
	264	\| 6 => (case recvAcl bio of
	265	SOME acl => SOME (MsgGrant acl)
	266	\| _ => NONE)
	267	\| 7 => (case recvAcl bio of
	268	SOME acl => SOME (MsgRevoke acl)
	269	\| _ => NONE)
	270	\| 8 => (case OpenSSL.readString bio of
	271	SOME user => SOME (MsgListPerms user)
	272	\| _ => NONE)
	273	\| 9 => Option.map MsgPerms
	274	(recvList (fn bio =>
	275	case (OpenSSL.readString bio,
	276	recvList OpenSSL.readString bio) of
	277	(SOME class, SOME values) => SOME (class, values)
	278	\| _ => NONE) bio)
	279	\| 10 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
	280	(SOME class, SOME value) => SOME (MsgWhoHas {class = class, value = value})
	281	\| _ => NONE)
	282	\| 11 => Option.map MsgWhoHasResponse
	283	(recvList OpenSSL.readString bio)
	284	\| 12 => Option.map MsgMultiConfig
	285	(recvList OpenSSL.readString bio)
	286	\| 13 => Option.map MsgRmdom (recvList OpenSSL.readString bio)
	287	\| 14 => SOME MsgRegenerate
	288	\| 15 => Option.map MsgRmuser (OpenSSL.readString bio)
	289	\| 16 => (case (OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
	290	(SOME dbtype, SOME passwd) =>
	291	SOME (MsgCreateDbUser {dbtype = dbtype, passwd = passwd})
	292	\| _ => NONE)
	293	\| 17 => (case (OpenSSL.readString bio, OpenSSL.readString bio, recvOption OpenSSL.readString bio) of
	294	(SOME dbtype, SOME dbname, SOME encoding) =>
	295	SOME (MsgCreateDb {dbtype = dbtype, dbname = dbname, encoding = encoding})
	296	\| _ => NONE)
	297	\| 18 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
	298	OpenSSL.readString bio, OpenSSL.readString bio) of
	299	(SOME domain, SOME user, SOME passwd, SOME mailbox) =>
	300	SOME (MsgNewMailbox {domain = domain, user = user,
	301	passwd = passwd, mailbox = mailbox})
	302	\| _ => NONE)
	303	\| 19 => (case (OpenSSL.readString bio, OpenSSL.readString bio,
	304	OpenSSL.readString bio) of
	305	(SOME domain, SOME user, SOME passwd) =>
	306	SOME (MsgPasswdMailbox {domain = domain, user = user,
	307	passwd = passwd})
	308	\| _ => NONE)
	309	\| 20 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
	310	(SOME domain, SOME user) =>
	311	SOME (MsgRmMailbox {domain = domain, user = user})
	312	\| _ => NONE)
	313	\| 21 => Option.map MsgListMailboxes (OpenSSL.readString bio)
	314	\| 22 => Option.map MsgMailboxes (recvList
	315	(fn bio =>
	316	case (OpenSSL.readString bio,
	317	OpenSSL.readString bio) of
	318	(SOME user, SOME mailbox) =>
	319	SOME {user = user, mailbox = mailbox}
	320	\| _ => NONE)
	321	bio)
	322	\| 23 => Option.map MsgSaQuery (OpenSSL.readString bio)
	323	\| 24 => Option.map MsgSaStatus (recvBool bio)
	324	\| 25 => (case (OpenSSL.readString bio, recvBool bio) of
	325	(SOME user, SOME b) => SOME (MsgSaSet (user, b))
	326	\| _ => NONE)
	327	\| 26 => Option.map MsgSmtpLogReq (OpenSSL.readString bio)
	328	\| 27 => Option.map MsgSmtpLogRes (OpenSSL.readString bio)
	329	\| 28 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
	330	(SOME dbtype, SOME passwd) =>
	331	SOME (MsgDbPasswd {dbtype = dbtype, passwd = passwd})
	332	\| _ => NONE)
	333	\| 29 => SOME MsgShutdown
	334	\| 30 => SOME MsgYes
	335	\| 31 => SOME MsgNo
	336	\| 32 => Option.map MsgQuery (recvQuery bio)
	337	\| 33 => Option.map MsgSocket (recvSockPerm bio)
	338	\| 34 => Option.map MsgFirewall (recvList OpenSSL.readString bio)
	339	\| 35 => SOME MsgRegenerateTc
	340	\| 36 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
	341	(SOME dbtype, SOME dbname) =>
	342	SOME (MsgDropDb {dbtype = dbtype, dbname = dbname})
	343	\| _ => NONE)
	344	\| 37 => (case (OpenSSL.readString bio, OpenSSL.readString bio) of
	345	(SOME dbtype, SOME dbname) =>
	346	SOME (MsgGrantDb {dbtype = dbtype, dbname = dbname})
	347	\| _ => NONE)
	348	\| 38 => SOME MsgMysqlFixperms
	349	\| 39 => Option.map MsgDescribe (OpenSSL.readString bio)
	350	\| 40 => Option.map MsgDescription (OpenSSL.readString bio)
	351	\| _ => NONE)
	352
	353	end