src/main.sml

   1 (* HCoop Domtool (http://hcoop.sourceforge.net/)
   2  * Copyright (c) 2006-2007, 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 (* Main interface *)
  20
  21 structure Main :> MAIN = struct
  22
  23 open Ast MsgTypes Print
  24
  25 structure SM = StringMap
  26
  27 fun init () = Acl.read Config.aclFile
  28
  29 fun check' G fname =
  30     let
  31         val prog = Parse.parse fname
  32     in
  33         if !ErrorMsg.anyErrors then
  34             G
  35         else
  36             Tycheck.checkFile G (Defaults.tInit ()) prog
  37     end
  38
  39 fun basis () =
  40     let
  41         val dir = Posix.FileSys.opendir Config.libRoot
  42
  43         fun loop files =
  44             case Posix.FileSys.readdir dir of
  45                 NONE => (Posix.FileSys.closedir dir;
  46                          files)
  47               | SOME fname =>
  48                 if String.isSuffix ".dtl" fname then
  49                     loop (OS.Path.joinDirFile {dir = Config.libRoot,
  50                                                file = fname}
  51                           :: files)
  52                 else
  53                     loop files
  54
  55         val files = loop []
  56         val (_, files) = Order.order NONE files
  57     in
  58         if !ErrorMsg.anyErrors then
  59             Env.empty
  60         else
  61             (Tycheck.allowExterns ();
  62              foldl (fn (fname, G) => check' G fname) Env.empty files
  63              before Tycheck.disallowExterns ())
  64     end
  65
  66 fun check fname =
  67     let
  68         val _ = ErrorMsg.reset ()
  69         val _ = Env.preTycheck ()
  70
  71         val b = basis ()
  72     in
  73         if !ErrorMsg.anyErrors then
  74             raise ErrorMsg.Error
  75         else
  76             let
  77                 val _ = Tycheck.disallowExterns ()
  78                 val _ = ErrorMsg.reset ()
  79                 val prog = Parse.parse fname
  80             in
  81                 if !ErrorMsg.anyErrors then
  82                     raise ErrorMsg.Error
  83                 else
  84                     let
  85                         val G' = Tycheck.checkFile b (Defaults.tInit ()) prog
  86                     in
  87                         if !ErrorMsg.anyErrors then
  88                             raise ErrorMsg.Error
  89                         else
  90                             (G', #3 prog)
  91                     end
  92             end
  93     end
  94
  95 val notTmp = CharVector.all (fn ch => Char.isAlphaNum ch orelse ch = #"." orelse ch = #"_" orelse ch = #"-")
  96
  97 fun checkDir dname =
  98     let
  99         val b = basis ()
 100
 101         val dir = Posix.FileSys.opendir dname
 102
 103         fun loop files =
 104             case Posix.FileSys.readdir dir of
 105                 NONE => (Posix.FileSys.closedir dir;
 106                          files)
 107               | SOME fname =>
 108                 if notTmp fname then
 109                     loop (OS.Path.joinDirFile {dir = dname,
 110                                                file = fname}
 111                           :: files)
 112                 else
 113                     loop files
 114
 115         val files = loop []
 116         val (_, files) = Order.order (SOME b) files
 117     in
 118         if !ErrorMsg.anyErrors then
 119             raise ErrorMsg.Error
 120         else
 121             (foldl (fn (fname, G) => check' G fname) b files;
 122              if !ErrorMsg.anyErrors then
 123                  raise ErrorMsg.Error
 124              else
 125                  ())
 126     end
 127
 128 fun reduce fname =
 129     let
 130         val (G, body) = check fname
 131     in
 132         if !ErrorMsg.anyErrors then
 133             NONE
 134         else
 135             case body of
 136                 SOME body =>
 137                 let
 138                     val body' = Reduce.reduceExp G body
 139                 in
 140                     (*printd (PD.hovBox (PD.PPS.Rel 0,
 141                                          [PD.string "Result:",
 142                                           PD.space 1,
 143                                           p_exp body']))*)
 144                     SOME body'
 145                 end
 146               | _ => NONE
 147     end
 148
 149 fun eval fname =
 150     case reduce fname of
 151         (SOME body') =>
 152         if !ErrorMsg.anyErrors then
 153             raise ErrorMsg.Error
 154         else
 155             Eval.exec (Defaults.eInit ()) body'
 156       | NONE => raise ErrorMsg.Error
 157
 158 fun eval' fname =
 159     case reduce fname of
 160         (SOME body') =>
 161         if !ErrorMsg.anyErrors then
 162             raise ErrorMsg.Error
 163         else
 164             ignore (Eval.exec' (Defaults.eInit ()) body')
 165       | NONE => raise ErrorMsg.Error
 166
 167 val dispatcher =
 168     Config.dispatcher ^ ":" ^ Int.toString Config.dispatcherPort
 169
 170 val self =
 171     "localhost:" ^ Int.toString Config.slavePort
 172
 173 fun context x =
 174     (OpenSSL.context false x)
 175     handle e as OpenSSL.OpenSSL _ =>
 176            (print "Couldn't find your certificate.\nYou probably haven't been given any Domtool privileges.\n";
 177             raise e)
 178
 179 fun requestContext f =
 180     let
 181         val user =
 182             case Posix.ProcEnv.getenv "DOMTOOL_USER" of
 183                 NONE =>
 184                 let
 185                     val uid = Posix.ProcEnv.getuid ()
 186                 in
 187                     Posix.SysDB.Passwd.name (Posix.SysDB.getpwuid uid)
 188                 end
 189               | SOME user => user
 190
 191         val () = Acl.read Config.aclFile
 192         val () = Domain.setUser user
 193
 194         val () = f ()
 195
 196         val context = context (Config.certDir ^ "/" ^ user ^ ".pem",
 197                                Config.keyDir ^ "/" ^ user ^ "/key.pem",
 198                                Config.trustStore)
 199     in
 200         (user, context)
 201     end
 202
 203 fun requestBio f =
 204     let
 205         val (user, context) = requestContext f
 206     in
 207         (user, OpenSSL.connect (context, dispatcher))
 208     end
 209
 210 fun requestSlaveBio () =
 211     let
 212         val (user, context) = requestContext (fn () => ())
 213     in
 214         (user, OpenSSL.connect (context, self))
 215     end
 216
 217 fun request fname =
 218     let
 219         val (user, bio) = requestBio (fn () => ignore (check fname))
 220
 221         val inf = TextIO.openIn fname
 222
 223         fun loop lines =
 224             case TextIO.inputLine inf of
 225                 NONE => String.concat (List.rev lines)
 226               | SOME line => loop (line :: lines)
 227
 228         val code = loop []
 229     in
 230         TextIO.closeIn inf;
 231         Msg.send (bio, MsgConfig code);
 232         case Msg.recv bio of
 233             NONE => print "Server closed connection unexpectedly.\n"
 234           | SOME m =>
 235             case m of
 236                 MsgOk => print "Configuration succeeded.\n"
 237               | MsgError s => print ("Configuration failed: " ^ s ^ "\n")
 238               | _ => print "Unexpected server reply.\n";
 239         OpenSSL.close bio
 240     end
 241     handle ErrorMsg.Error => ()
 242
 243 fun requestDir dname =
 244     let
 245         val _ = ErrorMsg.reset ()
 246
 247         val (user, bio) = requestBio (fn () => checkDir dname)
 248
 249         val b = basis ()
 250
 251         val dir = Posix.FileSys.opendir dname
 252
 253         fun loop files =
 254             case Posix.FileSys.readdir dir of
 255                 NONE => (Posix.FileSys.closedir dir;
 256                          files)
 257               | SOME fname =>
 258                 if notTmp fname then
 259                     loop (OS.Path.joinDirFile {dir = dname,
 260                                                file = fname}
 261                           :: files)
 262                 else
 263                     loop files
 264
 265         val files = loop []
 266         val (_, files) = Order.order (SOME b) files
 267
 268         val _ = if !ErrorMsg.anyErrors then
 269                     raise ErrorMsg.Error
 270                 else
 271                     ()
 272
 273         val codes = map (fn fname =>
 274                             let
 275                                 val inf = TextIO.openIn fname
 276
 277                                 fun loop lines =
 278                                     case TextIO.inputLine inf of
 279                                         NONE => String.concat (rev lines)
 280                                       | SOME line => loop (line :: lines)
 281                             in
 282                                 loop []
 283                                 before TextIO.closeIn inf
 284                             end) files
 285     in
 286         if !ErrorMsg.anyErrors then
 287             ()
 288         else
 289             (Msg.send (bio, MsgMultiConfig codes);
 290              case Msg.recv bio of
 291                  NONE => print "Server closed connection unexpectedly.\n"
 292                | SOME m =>
 293                  case m of
 294                      MsgOk => print "Configuration succeeded.\n"
 295                    | MsgError s => print ("Configuration failed: " ^ s ^ "\n")
 296                    | _ => print "Unexpected server reply.\n";
 297              OpenSSL.close bio)
 298     end
 299     handle ErrorMsg.Error => ()
 300
 301 fun requestPing () =
 302     let
 303         val (_, bio) = requestBio (fn () => ())
 304     in
 305         OpenSSL.close bio;
 306         OS.Process.success
 307     end
 308     handle _ => OS.Process.failure
 309
 310 fun requestShutdown () =
 311     let
 312         val (_, bio) = requestBio (fn () => ())
 313     in
 314         Msg.send (bio, MsgShutdown);
 315         case Msg.recv bio of
 316             NONE => print "Server closed connection unexpectedly.\n"
 317           | SOME m =>
 318             case m of
 319                 MsgOk => print "Shutdown begun.\n"
 320               | MsgError s => print ("Shutdown failed: " ^ s ^ "\n")
 321               | _ => print "Unexpected server reply.\n";
 322         OpenSSL.close bio
 323     end
 324
 325 fun requestSlavePing () =
 326     let
 327         val (_, bio) = requestSlaveBio ()
 328     in
 329         OpenSSL.close bio;
 330         OS.Process.success
 331     end
 332     handle _ => OS.Process.failure
 333
 334 fun requestSlaveShutdown () =
 335     let
 336         val (_, bio) = requestSlaveBio ()
 337     in
 338         Msg.send (bio, MsgShutdown);
 339         case Msg.recv bio of
 340             NONE => print "Server closed connection unexpectedly.\n"
 341           | SOME m =>
 342             case m of
 343                 MsgOk => print "Shutdown begun.\n"
 344               | MsgError s => print ("Shutdown failed: " ^ s ^ "\n")
 345               | _ => print "Unexpected server reply.\n";
 346         OpenSSL.close bio
 347     end
 348
 349 fun requestGrant acl =
 350     let
 351         val (user, bio) = requestBio (fn () => ())
 352     in
 353         Msg.send (bio, MsgGrant acl);
 354         case Msg.recv bio of
 355             NONE => print "Server closed connection unexpectedly.\n"
 356           | SOME m =>
 357             case m of
 358                 MsgOk => print "Grant succeeded.\n"
 359               | MsgError s => print ("Grant failed: " ^ s ^ "\n")
 360               | _ => print "Unexpected server reply.\n";
 361         OpenSSL.close bio
 362     end
 363
 364 fun requestRevoke acl =
 365     let
 366         val (user, bio) = requestBio (fn () => ())
 367     in
 368         Msg.send (bio, MsgRevoke acl);
 369         case Msg.recv bio of
 370             NONE => print "Server closed connection unexpectedly.\n"
 371           | SOME m =>
 372             case m of
 373                 MsgOk => print "Revoke succeeded.\n"
 374               | MsgError s => print ("Revoke failed: " ^ s ^ "\n")
 375               | _ => print "Unexpected server reply.\n";
 376         OpenSSL.close bio
 377     end
 378
 379 fun requestListPerms user =
 380     let
 381         val (_, bio) = requestBio (fn () => ())
 382     in
 383         Msg.send (bio, MsgListPerms user);
 384         (case Msg.recv bio of
 385              NONE => (print "Server closed connection unexpectedly.\n";
 386                       NONE)
 387            | SOME m =>
 388              case m of
 389                  MsgPerms perms => SOME perms
 390                | MsgError s => (print ("Listing failed: " ^ s ^ "\n");
 391                                 NONE)
 392                | _ => (print "Unexpected server reply.\n";
 393                        NONE))
 394         before OpenSSL.close bio
 395     end
 396
 397 fun requestWhoHas perm =
 398     let
 399         val (_, bio) = requestBio (fn () => ())
 400     in
 401         Msg.send (bio, MsgWhoHas perm);
 402         (case Msg.recv bio of
 403              NONE => (print "Server closed connection unexpectedly.\n";
 404                       NONE)
 405            | SOME m =>
 406              case m of
 407                  MsgWhoHasResponse users => SOME users
 408                | MsgError s => (print ("whohas failed: " ^ s ^ "\n");
 409                                 NONE)
 410                | _ => (print "Unexpected server reply.\n";
 411                        NONE))
 412         before OpenSSL.close bio
 413     end
 414
 415 fun requestRegen () =
 416     let
 417         val (_, bio) = requestBio (fn () => ())
 418     in
 419         Msg.send (bio, MsgRegenerate);
 420         case Msg.recv bio of
 421             NONE => print "Server closed connection unexpectedly.\n"
 422           | SOME m =>
 423             case m of
 424                 MsgOk => print "Regeneration succeeded.\n"
 425               | MsgError s => print ("Regeneration failed: " ^ s ^ "\n")
 426               | _ => print "Unexpected server reply.\n";
 427         OpenSSL.close bio
 428     end
 429
 430 fun requestRmdom dom =
 431     let
 432         val (_, bio) = requestBio (fn () => ())
 433     in
 434         Msg.send (bio, MsgRmdom dom);
 435         case Msg.recv bio of
 436             NONE => print "Server closed connection unexpectedly.\n"
 437           | SOME m =>
 438             case m of
 439                 MsgOk => print "Removal succeeded.\n"
 440               | MsgError s => print ("Removal failed: " ^ s ^ "\n")
 441               | _ => print "Unexpected server reply.\n";
 442         OpenSSL.close bio
 443     end
 444
 445 fun requestRmuser user =
 446     let
 447         val (_, bio) = requestBio (fn () => ())
 448     in
 449         Msg.send (bio, MsgRmuser user);
 450         case Msg.recv bio of
 451             NONE => print "Server closed connection unexpectedly.\n"
 452           | SOME m =>
 453             case m of
 454                 MsgOk => print "Removal succeeded.\n"
 455               | MsgError s => print ("Removal failed: " ^ s ^ "\n")
 456               | _ => print "Unexpected server reply.\n";
 457         OpenSSL.close bio
 458     end
 459
 460 fun requestDbUser dbtype =
 461     let
 462         val (_, bio) = requestBio (fn () => ())
 463     in
 464         Msg.send (bio, MsgCreateDbUser dbtype);
 465         case Msg.recv bio of
 466             NONE => print "Server closed connection unexpectedly.\n"
 467           | SOME m =>
 468             case m of
 469                 MsgOk => print "Your user has been created.\n"
 470               | MsgError s => print ("Creation failed: " ^ s ^ "\n")
 471               | _ => print "Unexpected server reply.\n";
 472         OpenSSL.close bio
 473     end
 474
 475 fun requestDbPasswd rc =
 476     let
 477         val (_, bio) = requestBio (fn () => ())
 478     in
 479         Msg.send (bio, MsgDbPasswd rc);
 480         case Msg.recv bio of
 481             NONE => print "Server closed connection unexpectedly.\n"
 482           | SOME m =>
 483             case m of
 484                 MsgOk => print "Your password has been changed.\n"
 485               | MsgError s => print ("Password set failed: " ^ s ^ "\n")
 486               | _ => print "Unexpected server reply.\n";
 487         OpenSSL.close bio
 488     end
 489
 490 fun requestDbTable p =
 491     let
 492         val (user, bio) = requestBio (fn () => ())
 493     in
 494         Msg.send (bio, MsgCreateDbTable p);
 495         case Msg.recv bio of
 496             NONE => print "Server closed connection unexpectedly.\n"
 497           | SOME m =>
 498             case m of
 499                 MsgOk => print ("Your database " ^ user ^ "_" ^ #dbname p ^ " has been created.\n")
 500               | MsgError s => print ("Creation failed: " ^ s ^ "\n")
 501               | _ => print "Unexpected server reply.\n";
 502         OpenSSL.close bio
 503     end
 504
 505 fun requestListMailboxes domain =
 506     let
 507         val (_, bio) = requestBio (fn () => ())
 508     in
 509         Msg.send (bio, MsgListMailboxes domain);
 510         (case Msg.recv bio of
 511              NONE => Vmail.Error "Server closed connection unexpectedly."
 512            | SOME m =>
 513              case m of
 514                  MsgMailboxes users => (Msg.send (bio, MsgOk);
 515                                         Vmail.Listing users)
 516                | MsgError s => Vmail.Error ("Creation failed: " ^ s)
 517                | _ => Vmail.Error "Unexpected server reply.")
 518         before OpenSSL.close bio
 519     end
 520
 521 fun requestNewMailbox p =
 522     let
 523         val (_, bio) = requestBio (fn () => ())
 524     in
 525         Msg.send (bio, MsgNewMailbox p);
 526         case Msg.recv bio of
 527             NONE => print "Server closed connection unexpectedly.\n"
 528           | SOME m =>
 529             case m of
 530                 MsgOk => print ("A mapping for " ^ #user p ^ "@" ^ #domain p ^ " has been created.\n")
 531               | MsgError s => print ("Creation failed: " ^ s ^ "\n")
 532               | _ => print "Unexpected server reply.\n";
 533         OpenSSL.close bio
 534     end
 535
 536 fun requestPasswdMailbox p =
 537     let
 538         val (_, bio) = requestBio (fn () => ())
 539     in
 540         Msg.send (bio, MsgPasswdMailbox p);
 541         case Msg.recv bio of
 542             NONE => print "Server closed connection unexpectedly.\n"
 543           | SOME m =>
 544             case m of
 545                 MsgOk => print ("The password for " ^ #user p ^ "@" ^ #domain p ^ " has been changed.\n")
 546               | MsgError s => print ("Set failed: " ^ s ^ "\n")
 547               | _ => print "Unexpected server reply.\n";
 548         OpenSSL.close bio
 549     end
 550
 551 fun requestRmMailbox p =
 552     let
 553         val (_, bio) = requestBio (fn () => ())
 554     in
 555         Msg.send (bio, MsgRmMailbox p);
 556         case Msg.recv bio of
 557             NONE => print "Server closed connection unexpectedly.\n"
 558           | SOME m =>
 559             case m of
 560                 MsgOk => print ("The mapping for mailbox " ^ #user p ^ "@" ^ #domain p ^ " has been deleted.\n")
 561               | MsgError s => print ("Remove failed: " ^ s ^ "\n")
 562               | _ => print "Unexpected server reply.\n";
 563         OpenSSL.close bio
 564     end
 565
 566 fun requestSaQuery addr =
 567     let
 568         val (_, bio) = requestBio (fn () => ())
 569     in
 570         Msg.send (bio, MsgSaQuery addr);
 571         (case Msg.recv bio of
 572              NONE => print "Server closed connection unexpectedly.\n"
 573            | SOME m =>
 574              case m of
 575                  MsgSaStatus b => (print ("SpamAssassin filtering for " ^ addr ^ " is "
 576                                           ^ (if b then "ON" else "OFF") ^ ".\n");
 577                                    Msg.send (bio, MsgOk))
 578                | MsgError s => print ("Query failed: " ^ s ^ "\n")
 579                | _ => print "Unexpected server reply.\n")
 580         before OpenSSL.close bio
 581     end
 582
 583 fun requestSaSet p =
 584     let
 585         val (_, bio) = requestBio (fn () => ())
 586     in
 587         Msg.send (bio, MsgSaSet p);
 588         case Msg.recv bio of
 589             NONE => print "Server closed connection unexpectedly.\n"
 590           | SOME m =>
 591             case m of
 592                 MsgOk => print ("SpamAssassin filtering for " ^ #1 p ^ " is now "
 593                                 ^ (if #2 p then "ON" else "OFF") ^ ".\n")
 594               | MsgError s => print ("Set failed: " ^ s ^ "\n")
 595               | _ => print "Unexpected server reply.\n";
 596         OpenSSL.close bio
 597     end
 598
 599 fun requestSmtpLog domain =
 600     let
 601         val (_, bio) = requestBio (fn () => ())
 602
 603         val _ = Msg.send (bio, MsgSmtpLogReq domain)
 604
 605         fun loop () =
 606             case Msg.recv bio of
 607                 NONE => print "Server closed connection unexpectedly.\n"
 608               | SOME m =>
 609                 case m of
 610                     MsgOk => ()
 611                   | MsgSmtpLogRes line => (print line;
 612                                            loop ())
 613                   | MsgError s => print ("Log search failed: " ^ s ^ "\n")
 614                   | _ => print "Unexpected server reply.\n"
 615     in
 616         loop ();
 617         OpenSSL.close bio
 618     end
 619
 620 fun requestApt {node, pkg} =
 621     let
 622         val (user, context) = requestContext (fn () => ())
 623         val bio = OpenSSL.connect (context, if node = Config.masterNode then
 624                                                 dispatcher
 625                                             else
 626                                                 Domain.nodeIp node ^ ":" ^ Int.toString Config.slavePort)
 627
 628         val _ = Msg.send (bio, MsgQuery (QApt pkg))
 629
 630         fun loop () =
 631             case Msg.recv bio of
 632                 NONE => (print "Server closed connection unexpectedly.\n";
 633                          OS.Process.failure)
 634               | SOME m =>
 635                 case m of
 636                     MsgYes => (print "Package is installed.\n";
 637                                OS.Process.success)
 638                   | MsgNo => (print "Package is not installed.\n";
 639                               OS.Process.failure)
 640                   | MsgError s => (print ("APT query failed: " ^ s ^ "\n");
 641                                    OS.Process.failure)
 642                   | _ => (print "Unexpected server reply.\n";
 643                           OS.Process.failure)
 644     in
 645         loop ()
 646         before OpenSSL.close bio
 647     end
 648
 649 fun requestCron {node, uname} =
 650     let
 651         val (user, context) = requestContext (fn () => ())
 652         val bio = OpenSSL.connect (context, if node = Config.masterNode then
 653                                                 dispatcher
 654                                             else
 655                                                 Domain.nodeIp node ^ ":" ^ Int.toString Config.slavePort)
 656
 657         val _ = Msg.send (bio, MsgQuery (QCron uname))
 658
 659         fun loop () =
 660             case Msg.recv bio of
 661                 NONE => (print "Server closed connection unexpectedly.\n";
 662                          OS.Process.failure)
 663               | SOME m =>
 664                 case m of
 665                     MsgYes => (print "User has cron permissions.\n";
 666                                OS.Process.success)
 667                   | MsgNo => (print "User does not have cron permissions.\n";
 668                               OS.Process.failure)
 669                   | MsgError s => (print ("Cron query failed: " ^ s ^ "\n");
 670                                    OS.Process.failure)
 671                   | _ => (print "Unexpected server reply.\n";
 672                           OS.Process.failure)
 673     in
 674         loop ()
 675         before OpenSSL.close bio
 676     end
 677
 678 fun requestFtp {node, uname} =
 679     let
 680         val (user, context) = requestContext (fn () => ())
 681         val bio = OpenSSL.connect (context, if node = Config.masterNode then
 682                                                 dispatcher
 683                                             else
 684                                                 Domain.nodeIp node ^ ":" ^ Int.toString Config.slavePort)
 685
 686         val _ = Msg.send (bio, MsgQuery (QFtp uname))
 687
 688         fun loop () =
 689             case Msg.recv bio of
 690                 NONE => (print "Server closed connection unexpectedly.\n";
 691                          OS.Process.failure)
 692               | SOME m =>
 693                 case m of
 694                     MsgYes => (print "User has FTP permissions.\n";
 695                                OS.Process.success)
 696                   | MsgNo => (print "User does not have FTP permissions.\n";
 697                               OS.Process.failure)
 698                   | MsgError s => (print ("FTP query failed: " ^ s ^ "\n");
 699                                    OS.Process.failure)
 700                   | _ => (print "Unexpected server reply.\n";
 701                           OS.Process.failure)
 702     in
 703         loop ()
 704         before OpenSSL.close bio
 705     end
 706
 707 fun requestTrustedPath {node, uname} =
 708     let
 709         val (user, context) = requestContext (fn () => ())
 710         val bio = OpenSSL.connect (context, if node = Config.masterNode then
 711                                                 dispatcher
 712                                             else
 713                                                 Domain.nodeIp node ^ ":" ^ Int.toString Config.slavePort)
 714
 715         val _ = Msg.send (bio, MsgQuery (QTrustedPath uname))
 716
 717         fun loop () =
 718             case Msg.recv bio of
 719                 NONE => (print "Server closed connection unexpectedly.\n";
 720                          OS.Process.failure)
 721               | SOME m =>
 722                 case m of
 723                     MsgYes => (print "User has trusted path restriction.\n";
 724                                OS.Process.success)
 725                   | MsgNo => (print "User does not have trusted path restriction.\n";
 726                               OS.Process.failure)
 727                   | MsgError s => (print ("Trusted path query failed: " ^ s ^ "\n");
 728                                    OS.Process.failure)
 729                   | _ => (print "Unexpected server reply.\n";
 730                           OS.Process.failure)
 731     in
 732         loop ()
 733         before OpenSSL.close bio
 734     end
 735
 736 fun requestSocketPerm {node, uname} =
 737     let
 738         val (user, context) = requestContext (fn () => ())
 739         val bio = OpenSSL.connect (context, if node = Config.masterNode then
 740                                                 dispatcher
 741                                             else
 742                                                 Domain.nodeIp node ^ ":" ^ Int.toString Config.slavePort)
 743
 744         val _ = Msg.send (bio, MsgQuery (QSocket uname))
 745
 746         fun loop () =
 747             case Msg.recv bio of
 748                 NONE => (print "Server closed connection unexpectedly.\n";
 749                          OS.Process.failure)
 750               | SOME m =>
 751                 case m of
 752                     MsgSocket p => (case p of
 753                                         Any => print "Any\n"
 754                                       | Client => print "Client\n"
 755                                       | Server => print "Server\n"
 756                                       | Nada => print "Nada\n";
 757                                     OS.Process.success)
 758                   | MsgError s => (print ("Socket permission query failed: " ^ s ^ "\n");
 759                                    OS.Process.failure)
 760                   | _ => (print "Unexpected server reply.\n";
 761                           OS.Process.failure)
 762     in
 763         loop ()
 764         before OpenSSL.close bio
 765     end
 766
 767 fun requestFirewall {node, uname} =
 768     let
 769         val (user, context) = requestContext (fn () => ())
 770         val bio = OpenSSL.connect (context, if node = Config.masterNode then
 771                                                 dispatcher
 772                                             else
 773                                                 Domain.nodeIp node ^ ":" ^ Int.toString Config.slavePort)
 774
 775         val _ = Msg.send (bio, MsgQuery (QFirewall uname))
 776
 777         fun loop () =
 778             case Msg.recv bio of
 779                 NONE => (print "Server closed connection unexpectedly.\n";
 780                          OS.Process.failure)
 781               | SOME m =>
 782                 case m of
 783                     MsgFirewall ls => (app (fn s => (print s; print "\n")) ls;
 784                                        OS.Process.success)
 785                   | MsgError s => (print ("Firewall query failed: " ^ s ^ "\n");
 786                                    OS.Process.failure)
 787                   | _ => (print "Unexpected server reply.\n";
 788                           OS.Process.failure)
 789     in
 790         loop ()
 791         before OpenSSL.close bio
 792     end
 793
 794 fun regenerate context =
 795     let
 796         val _ = ErrorMsg.reset ()
 797
 798         val b = basis ()
 799         val () = Tycheck.disallowExterns ()
 800
 801         val () = Domain.resetGlobal ()
 802
 803         fun contactNode (node, ip) =
 804             if node = Config.defaultNode then
 805                 Domain.resetLocal ()
 806             else let
 807                     val bio = OpenSSL.connect (context,
 808                                                ip
 809                                                ^ ":"
 810                                                ^ Int.toString Config.slavePort)
 811                 in
 812                     Msg.send (bio, MsgRegenerate);
 813                     case Msg.recv bio of
 814                         NONE => print "Slave closed connection unexpectedly\n"
 815                       | SOME m =>
 816                         case m of
 817                             MsgOk => print ("Slave " ^ node ^ " pre-regeneration finished\n")
 818                           | MsgError s => print ("Slave " ^ node
 819                                                  ^ " returned error: " ^
 820                                                  s ^ "\n")
 821                           | _ => print ("Slave " ^ node
 822                                         ^ " returned unexpected command\n");
 823                     OpenSSL.close bio
 824                 end
 825
 826         fun doUser user =
 827             let
 828                 val _ = Domain.setUser user
 829                 val _ = ErrorMsg.reset ()
 830
 831                 val dname = Config.domtoolDir user
 832
 833                 val dir = Posix.FileSys.opendir dname
 834
 835                 fun loop files =
 836                     case Posix.FileSys.readdir dir of
 837                         NONE => (Posix.FileSys.closedir dir;
 838                                  files)
 839                       | SOME fname =>
 840                         if notTmp fname then
 841                             loop (OS.Path.joinDirFile {dir = dname,
 842                                                        file = fname}
 843                                   :: files)
 844                         else
 845                             loop files
 846
 847                 val files = loop []
 848                 val (_, files) = Order.order (SOME b) files
 849             in
 850                 if !ErrorMsg.anyErrors then
 851                     (ErrorMsg.reset ();
 852                      print ("User " ^ user ^ "'s configuration has errors!\n"))
 853                 else
 854                     app eval' files
 855             end
 856                 handle IO.Io _ => ()
 857                      | OS.SysErr (s, _) => print ("System error processing user " ^ user ^ ": " ^ s ^ "\n")
 858                      | ErrorMsg.Error => (ErrorMsg.reset ();
 859                                           print ("User " ^ user ^ " had a compilation error.\n"))
 860                      | _ => print "Unknown exception during regeneration!\n"
 861     in
 862         app contactNode Config.nodeIps;
 863         Env.pre ();
 864         app doUser (Acl.users ());
 865         Env.post ()
 866     end
 867
 868 fun rmuser user =
 869     let
 870         val doms = Acl.class {user = user, class = "domain"}
 871         val doms = List.filter (fn dom =>
 872                                    case Acl.whoHas {class = "domain", value = dom} of
 873                                        [_] => true
 874                                      | _ => false) (StringSet.listItems doms)
 875     in
 876         Acl.rmuser user;
 877         Domain.rmdom doms
 878     end
 879
 880 fun now () = Date.toString (Date.fromTimeUniv (Time.now ()))
 881
 882 fun answerQuery q =
 883     case q of
 884         QApt pkg => if Apt.installed pkg then MsgYes else MsgNo
 885       | QCron user => if Cron.allowed user then MsgYes else MsgNo
 886       | QFtp user => if Ftp.allowed user then MsgYes else MsgNo
 887       | QTrustedPath user => if TrustedPath.query user then MsgYes else MsgNo
 888       | QSocket user => MsgSocket (SocketPerm.query user)
 889       | QFirewall user => MsgFirewall (Firewall.query user)
 890
 891 fun describeQuery q =
 892     case q of
 893         QApt pkg => "Requested installation status of package " ^ pkg
 894       | QCron user => "Asked about cron permissions for user " ^ user
 895       | QFtp user => "Asked about FTP permissions for user " ^ user
 896       | QTrustedPath user => "Asked about trusted path settings for user " ^ user
 897       | QSocket user => "Asked about socket permissions for user " ^ user
 898       | QFirewall user => "Asked about firewall rules for user " ^ user
 899
 900 fun service () =
 901     let
 902         val () = Acl.read Config.aclFile
 903
 904         val context = context (Config.serverCert,
 905                                Config.serverKey,
 906                                Config.trustStore)
 907         val _ = Domain.set_context context
 908
 909         val sock = OpenSSL.listen (context, Config.dispatcherPort)
 910
 911         fun loop () =
 912             case OpenSSL.accept sock of
 913                 NONE => ()
 914               | SOME bio =>
 915                 let
 916                     val user = OpenSSL.peerCN bio
 917                     val () = print ("\nConnection from " ^ user ^ " at " ^ now () ^ "\n")
 918                     val () = Domain.setUser user
 919
 920                     fun doIt f cleanup =
 921                         ((case f () of
 922                              (msgLocal, SOME msgRemote) =>
 923                              (print msgLocal;
 924                               print "\n";
 925                               Msg.send (bio, MsgError msgRemote))
 926                            | (msgLocal, NONE) =>
 927                              (print msgLocal;
 928                               print "\n";
 929                               Msg.send (bio, MsgOk)))
 930                          handle OpenSSL.OpenSSL _ =>
 931                                 print "OpenSSL error\n"
 932                               | OS.SysErr (s, _) =>
 933                                 (print "System error: ";
 934                                  print s;
 935                                  print "\n";
 936                                  Msg.send (bio, MsgError ("System error: " ^ s))
 937                                  handle OpenSSL.OpenSSL _ => ())
 938                               | Fail s =>
 939                                 (print "Failure: ";
 940                                  print s;
 941                                  print "\n";
 942                                  Msg.send (bio, MsgError ("Failure: " ^ s))
 943                                  handle OpenSSL.OpenSSL _ => ())
 944                               | ErrorMsg.Error =>
 945                                 (print "Compilation error\n";
 946                                  Msg.send (bio, MsgError "Error during configuration evaluation")
 947                                  handle OpenSSL.OpenSSL _ => ());
 948                          (cleanup ();
 949                           ignore (OpenSSL.readChar bio);
 950                           OpenSSL.close bio)
 951                          handle OpenSSL.OpenSSL _ => ();
 952                          loop ())
 953
 954                     fun doConfig codes =
 955                         let
 956                             val _ = print "Configuration:\n"
 957                             val _ = app (fn s => (print s; print "\n")) codes
 958                             val _ = print "\n"
 959
 960                             val outname = OS.FileSys.tmpName ()
 961
 962                             fun doOne code =
 963                                 let
 964                                     val outf = TextIO.openOut outname
 965                                 in
 966                                     TextIO.output (outf, code);
 967                                     TextIO.closeOut outf;
 968                                     eval' outname
 969                                 end
 970                         in
 971                             doIt (fn () => (Env.pre ();
 972                                             app doOne codes;
 973                                             Env.post ();
 974                                             Msg.send (bio, MsgOk);
 975                                             ("Configuration complete.", NONE)))
 976                                  (fn () => OS.FileSys.remove outname)
 977                         end
 978
 979                     fun checkAddr s =
 980                         case String.fields (fn ch => ch = #"@") s of
 981                             [user'] =>
 982                             if user = user' then
 983                                 SOME (SetSA.User s)
 984                             else
 985                                 NONE
 986                           | [user', domain] =>
 987                             if Domain.validEmailUser user' andalso Domain.yourDomain domain then
 988                                 SOME (SetSA.Email s)
 989                             else
 990                                 NONE
 991                           | _ => NONE
 992
 993                     fun cmdLoop () =
 994                         case Msg.recv bio of
 995                             NONE => (OpenSSL.close bio
 996                                      handle OpenSSL.OpenSSL _ => ();
 997                                      loop ())
 998                           | SOME m =>
 999                             case m of
1000                                 MsgConfig code => doConfig [code]
1001                               | MsgMultiConfig codes => doConfig codes
1002
1003                               | MsgShutdown =>
1004                                 if Acl.query {user = user, class = "priv", value = "all"}
1005                                    orelse Acl.query {user = user, class = "priv", value = "shutdown"} then
1006                                     print ("Domtool dispatcher shutting down at " ^ now () ^ "\n\n")
1007                                 else
1008                                     (print "Unauthorized shutdown command!\n";
1009                                      OpenSSL.close bio
1010                                      handle OpenSSL.OpenSSL _ => ();
1011                                      loop ())
1012
1013                               | MsgGrant acl =>
1014                                 doIt (fn () =>
1015                                          if Acl.query {user = user, class = "priv", value = "all"} then
1016                                              (Acl.grant acl;
1017                                               Acl.write Config.aclFile;
1018                                               ("Granted permission " ^ #value acl ^ " to " ^ #user acl ^ " in " ^ #class acl ^ ".",
1019                                                NONE))
1020                                          else
1021                                              ("Unauthorized user asked to grant a permission!",
1022                                               SOME "Not authorized to grant privileges"))
1023                                      (fn () => ())
1024
1025                               | MsgRevoke acl =>
1026                                 doIt (fn () =>
1027                                          if Acl.query {user = user, class = "priv", value = "all"} then
1028                                              (Acl.revoke acl;
1029                                               Acl.write Config.aclFile;
1030                                               ("Revoked permission " ^ #value acl ^ " from " ^ #user acl ^ " in " ^ #class acl ^ ".",
1031                                                NONE))
1032                                          else
1033                                              ("Unauthorized user asked to revoke a permission!",
1034                                               SOME "Not authorized to revoke privileges"))
1035                                      (fn () => ())
1036
1037                               | MsgListPerms user =>
1038                                 doIt (fn () =>
1039                                          (Msg.send (bio, MsgPerms (Acl.queryAll user));
1040                                           ("Sent permission list for user " ^ user ^ ".",
1041                                            NONE)))
1042                                      (fn () => ())
1043
1044                               | MsgWhoHas perm =>
1045                                 doIt (fn () =>
1046                                          (Msg.send (bio, MsgWhoHasResponse (Acl.whoHas perm));
1047                                           ("Sent whohas response for " ^ #class perm ^ " / " ^ #value perm ^ ".",
1048                                            NONE)))
1049                                      (fn () => ())
1050
1051                               | MsgRmdom doms =>
1052                                 doIt (fn () =>
1053                                          if Acl.query {user = user, class = "priv", value = "all"}
1054                                             orelse List.all (fn dom => Acl.query {user = user, class = "domain", value = dom}) doms then
1055                                              (Domain.rmdom doms;
1056                                               app (fn dom =>
1057                                                       Acl.revokeFromAll {class = "domain", value = dom}) doms;
1058                                               Acl.write Config.aclFile;
1059                                               ("Removed domains" ^ foldl (fn (d, s) => s ^ " " ^ d) "" doms ^ ".",
1060                                                NONE))
1061                                          else
1062                                              ("Unauthorized user asked to remove a domain!",
1063                                               SOME "Not authorized to remove that domain"))
1064                                      (fn () => ())
1065
1066                               | MsgRegenerate =>
1067                                 doIt (fn () =>
1068                                          if Acl.query {user = user, class = "priv", value = "regen"}
1069                                             orelse Acl.query {user = user, class = "priv", value = "all"} then
1070                                              (regenerate context;
1071                                               ("Regenerated all configuration.",
1072                                                NONE))
1073                                          else
1074                                              ("Unauthorized user asked to regenerate!",
1075                                               SOME "Not authorized to regenerate"))
1076                                      (fn () => ())
1077
1078                               | MsgRmuser user' =>
1079                                 doIt (fn () =>
1080                                          if Acl.query {user = user, class = "priv", value = "all"} then
1081                                              (rmuser user';
1082                                               Acl.write Config.aclFile;
1083                                               ("Removed user " ^ user' ^ ".",
1084                                                NONE))
1085                                          else
1086                                              ("Unauthorized user asked to remove a user!",
1087                                               SOME "Not authorized to remove users"))
1088                                      (fn () => ())
1089
1090                               | MsgCreateDbUser {dbtype, passwd} =>
1091                                 doIt (fn () =>
1092                                          case Dbms.lookup dbtype of
1093                                              NONE => ("Database user creation request with unknown datatype type " ^ dbtype,
1094                                                       SOME ("Unknown database type " ^ dbtype))
1095                                            | SOME handler =>
1096                                              case #adduser handler {user = user, passwd = passwd} of
1097                                                  NONE => ("Added " ^ dbtype ^ " user " ^ user ^ ".",
1098                                                           NONE)
1099                                                | SOME msg =>
1100                                                  ("Error adding a " ^ dbtype ^ " user " ^ user ^ ": " ^ msg,
1101                                                   SOME ("Error adding user: " ^ msg)))
1102                                      (fn () => ())
1103
1104                               | MsgDbPasswd {dbtype, passwd} =>
1105                                 doIt (fn () =>
1106                                          case Dbms.lookup dbtype of
1107                                              NONE => ("Database passwd request with unknown datatype type " ^ dbtype,
1108                                                       SOME ("Unknown database type " ^ dbtype))
1109                                            | SOME handler =>
1110                                              case #passwd handler {user = user, passwd = passwd} of
1111                                                  NONE => ("Changed " ^ dbtype ^ " password of user " ^ user ^ ".",
1112                                                           NONE)
1113                                                | SOME msg =>
1114                                                  ("Error setting " ^ dbtype ^ " password of user " ^ user ^ ": " ^ msg,
1115                                                   SOME ("Error adding user: " ^ msg)))
1116                                      (fn () => ())
1117
1118                               | MsgCreateDbTable {dbtype, dbname} =>
1119                                 doIt (fn () =>
1120                                          if Dbms.validDbname dbname then
1121                                              case Dbms.lookup dbtype of
1122                                                  NONE => ("Database creation request with unknown datatype type " ^ dbtype,
1123                                                           SOME ("Unknown database type " ^ dbtype))
1124                                                | SOME handler =>
1125                                                  case #createdb handler {user = user, dbname = dbname} of
1126                                                      NONE => ("Created database " ^ user ^ "_" ^ dbname ^ ".",
1127                                                               NONE)
1128                                                    | SOME msg => ("Error creating database " ^ user ^ "_" ^ dbname ^ ": " ^ msg,
1129                                                                   SOME ("Error creating database: " ^ msg))
1130                                          else
1131                                              ("Invalid database name " ^ user ^ "_" ^ dbname,
1132                                               SOME ("Invalid database name " ^ dbname)))
1133                                      (fn () => ())
1134
1135                               | MsgListMailboxes domain =>
1136                                 doIt (fn () =>
1137                                          if not (Domain.yourDomain domain) then
1138                                              ("User wasn't authorized to list mailboxes for " ^ domain,
1139                                               SOME "You're not authorized to configure that domain.")
1140                                          else
1141                                              case Vmail.list domain of
1142                                                  Vmail.Listing users => (Msg.send (bio, MsgMailboxes users);
1143                                                                          ("Sent mailbox list for " ^ domain,
1144                                                                           NONE))
1145                                                | Vmail.Error msg => ("Error listing mailboxes for " ^ domain ^ ": " ^ msg,
1146                                                                      SOME msg))
1147                                      (fn () => ())
1148
1149                               | MsgNewMailbox {domain, user = emailUser, passwd, mailbox} =>
1150                                 doIt (fn () =>
1151                                          if not (Domain.yourDomain domain) then
1152                                              ("User wasn't authorized to add a mailbox to " ^ domain,
1153                                               SOME "You're not authorized to configure that domain.")
1154                                          else if not (Domain.validEmailUser emailUser) then
1155                                              ("Invalid e-mail username " ^ emailUser,
1156                                               SOME "Invalid e-mail username")
1157                                          else if not (CharVector.all Char.isGraph passwd) then
1158                                              ("Invalid password",
1159                                               SOME "Invalid password; may only contain printable, non-space characters")
1160                                          else if not (Domain.yourPath mailbox) then
1161                                              ("User wasn't authorized to add a mailbox at " ^ mailbox,
1162                                               SOME "You're not authorized to use that mailbox location.")
1163                                          else
1164                                              case Vmail.add {requester = user,
1165                                                              domain = domain, user = emailUser,
1166                                                              passwd = passwd, mailbox = mailbox} of
1167                                                  NONE => ("Added mailbox " ^ emailUser ^ "@" ^ domain ^ " at " ^ mailbox,
1168                                                           NONE)
1169                                                | SOME msg => ("Error adding mailbox " ^ emailUser ^ "@" ^ domain ^ ": " ^ msg,
1170                                                               SOME msg))
1171                                      (fn () => ())
1172
1173                               | MsgPasswdMailbox {domain, user = emailUser, passwd} =>
1174                                 doIt (fn () =>
1175                                          if not (Domain.yourDomain domain) then
1176                                              ("User wasn't authorized to change password of a mailbox for " ^ domain,
1177                                               SOME "You're not authorized to configure that domain.")
1178                                          else if not (Domain.validEmailUser emailUser) then
1179                                              ("Invalid e-mail username " ^ emailUser,
1180                                               SOME "Invalid e-mail username")
1181                                          else if not (CharVector.all Char.isGraph passwd) then
1182                                              ("Invalid password",
1183                                               SOME "Invalid password; may only contain printable, non-space characters")
1184                                          else
1185                                              case Vmail.passwd {domain = domain, user = emailUser,
1186                                                                 passwd = passwd} of
1187                                                  NONE => ("Changed password of mailbox " ^ emailUser ^ "@" ^ domain,
1188                                                           NONE)
1189                                                | SOME msg => ("Error changing mailbox password for " ^ emailUser ^ "@" ^ domain ^ ": " ^ msg,
1190                                                               SOME msg))
1191                                      (fn () => ())
1192
1193                               | MsgRmMailbox {domain, user = emailUser} =>
1194                                 doIt (fn () =>
1195                                          if not (Domain.yourDomain domain) then
1196                                              ("User wasn't authorized to change password of a mailbox for " ^ domain,
1197                                               SOME "You're not authorized to configure that domain.")
1198                                          else if not (Domain.validEmailUser emailUser) then
1199                                              ("Invalid e-mail username " ^ emailUser,
1200                                               SOME "Invalid e-mail username")
1201                                          else
1202                                              case Vmail.rm {domain = domain, user = emailUser} of
1203                                                  NONE => ("Deleted mailbox " ^ emailUser ^ "@" ^ domain,
1204                                                           NONE)
1205                                                | SOME msg => ("Error deleting mailbox " ^ emailUser ^ "@" ^ domain ^ ": " ^ msg,
1206                                                               SOME msg))
1207                                      (fn () => ())
1208
1209                               | MsgSaQuery addr =>
1210                                 doIt (fn () =>
1211                                          case checkAddr addr of
1212                                              NONE => ("User tried to query SA filtering for " ^ addr,
1213                                                       SOME "You aren't allowed to configure SA filtering for that recipient.")
1214                                            | SOME addr' => (Msg.send (bio, MsgSaStatus (SetSA.query addr'));
1215                                                             ("Queried SA filtering status for " ^ addr,
1216                                                              NONE)))
1217                                      (fn () => ())
1218
1219                               | MsgSaSet (addr, b) =>
1220                                 doIt (fn () =>
1221                                          case checkAddr addr of
1222                                              NONE => ("User tried to set SA filtering for " ^ addr,
1223                                                       SOME "You aren't allowed to configure SA filtering for that recipient.")
1224                                            | SOME addr' => (SetSA.set (addr', b);
1225                                                             Msg.send (bio, MsgOk);
1226                                                             ("Set SA filtering status for " ^ addr ^ " to "
1227                                                              ^ (if b then "ON" else "OFF"),
1228                                                              NONE)))
1229                                      (fn () => ())
1230
1231                               | MsgSmtpLogReq domain =>
1232                                 doIt (fn () =>
1233                                          if not (Domain.yourDomain domain) then
1234                                              ("Unauthorized user tried to request SMTP logs for " ^ domain,
1235                                               SOME "You aren't authorized to configure that domain.")
1236                                          else
1237                                              (SmtpLog.search (fn line => Msg.send (bio, MsgSmtpLogRes line))
1238                                               domain;
1239                                               ("Requested SMTP logs for " ^ domain,
1240                                                NONE)))
1241                                 (fn () => ())
1242
1243                               | MsgQuery q =>
1244                                 doIt (fn () => (Msg.send (bio, answerQuery q);
1245                                                 (describeQuery q,
1246                                                  NONE)))
1247                                 (fn () => ())
1248
1249                               | _ =>
1250                                 doIt (fn () => ("Unexpected command",
1251                                                 SOME "Unexpected command"))
1252                                      (fn () => ())
1253                 in
1254                     cmdLoop ()
1255                 end
1256                     handle OpenSSL.OpenSSL s =>
1257                            (print ("OpenSSL error: " ^ s ^ "\n");
1258                             OpenSSL.close bio
1259                             handle OpenSSL.OpenSSL _ => ();
1260                             loop ())
1261                          | OS.SysErr (s, _) =>
1262                            (print ("System error: " ^ s ^ "\n");
1263                             OpenSSL.close bio
1264                             handle OpenSSL.OpenSSL _ => ();
1265                             loop ())
1266                          | IO.Io {name, function, cause} =>
1267                            (print ("IO error: " ^ function ^ " for " ^ name ^ "\n");
1268                             app (fn x => print (x ^ "\n")) (SMLofNJ.exnHistory cause);
1269                             OpenSSL.close bio
1270                             handle OpenSSL.OpenSSL _ => ();
1271                             loop ())
1272                          | e =>
1273                            (print "Unknown exception in main loop!\n";
1274                             app (fn x => print (x ^ "\n")) (SMLofNJ.exnHistory e);
1275                             OpenSSL.close bio
1276                             handle OpenSSL.OpenSSL _ => ();
1277                             loop ())
1278     in
1279         print ("Domtool dispatcher starting up at " ^ now () ^ "\n");
1280         print "Listening for connections....\n";
1281         loop ();
1282         OpenSSL.shutdown sock
1283     end
1284
1285 fun slave () =
1286     let
1287         val host = Slave.hostname ()
1288
1289         val context = context (Config.certDir ^ "/" ^ host ^ ".pem",
1290                                Config.keyDir ^ "/" ^ host ^ "/key.pem",
1291                                Config.trustStore)
1292
1293         val sock = OpenSSL.listen (context, Config.slavePort)
1294
1295         val _ = print ("Slave server starting at " ^ now () ^ "\n")
1296
1297         fun loop () =
1298             case OpenSSL.accept sock of
1299                 NONE => ()
1300               | SOME bio =>
1301                 let
1302                     val peer = OpenSSL.peerCN bio
1303                     val () = print ("\nConnection from " ^ peer ^ " at " ^ now () ^ "\n")
1304                 in
1305                     if peer = Config.dispatcherName then let
1306                             fun loop' files =
1307                                 case Msg.recv bio of
1308                                     NONE => print "Dispatcher closed connection unexpectedly\n"
1309                                   | SOME m =>
1310                                     case m of
1311                                         MsgFile file => loop' (file :: files)
1312                                       | MsgDoFiles => (Slave.handleChanges files;
1313                                                        Msg.send (bio, MsgOk))
1314                                       | MsgRegenerate => (Domain.resetLocal ();
1315                                                           Msg.send (bio, MsgOk))
1316                                       | _ => (print "Dispatcher sent unexpected command\n";
1317                                               Msg.send (bio, MsgError "Unexpected command"))
1318                         in
1319                             loop' [];
1320                             ignore (OpenSSL.readChar bio);
1321                             OpenSSL.close bio;
1322                             loop ()
1323                         end
1324                     else if peer = "domtool" then
1325                         case Msg.recv bio of
1326                             SOME MsgShutdown => (OpenSSL.close bio;
1327                                                  print ("Shutting down at " ^ now () ^ "\n\n"))
1328                           | _ => (OpenSSL.close bio;
1329                                   loop ())
1330                     else
1331                         case Msg.recv bio of
1332                             SOME (MsgQuery q) => (print (describeQuery q ^ "\n");
1333                                                   Msg.send (bio, answerQuery q);
1334                                                   ignore (OpenSSL.readChar bio);
1335                                                   OpenSSL.close bio;
1336                                                   loop ())
1337                           | _ => (OpenSSL.close bio;
1338                                   loop ())
1339                 end handle OpenSSL.OpenSSL s =>
1340                            (print ("OpenSSL error: "^ s ^ "\n");
1341                             OpenSSL.close bio
1342                                           handle OpenSSL.OpenSSL _ => ();
1343                             loop ())
1344                          | e as OS.SysErr (s, _) =>
1345                            (app (fn s => print (s ^ "\n")) (SMLofNJ.exnHistory e);
1346                             print ("System error: "^ s ^ "\n");
1347                             OpenSSL.close bio
1348                             handle OpenSSL.OpenSSL _ => ();
1349                             loop ())
1350     in
1351         loop ();
1352         OpenSSL.shutdown sock
1353     end
1354
1355 fun listBasis () =
1356     let
1357         val dir = Posix.FileSys.opendir Config.libRoot
1358
1359         fun loop files =
1360             case Posix.FileSys.readdir dir of
1361                 NONE => (Posix.FileSys.closedir dir;
1362                          files)
1363               | SOME fname =>
1364                 if String.isSuffix ".dtl" fname then
1365                     loop (OS.Path.joinDirFile {dir = Config.libRoot,
1366                                                file = fname}
1367                           :: files)
1368                 else
1369                     loop files
1370     in
1371         loop []
1372     end
1373
1374 fun autodocBasis outdir =
1375     Autodoc.autodoc {outdir = outdir, infiles = listBasis ()}
1376
1377 end