src/main.sml

   1 (* HCoop Domtool (http://hcoop.sourceforge.net/)
   2  * Copyright (c) 2006, Adam Chlipala
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  *)
  18
  19 (* 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 fun requestContext f =
 171     let
 172         val uid = Posix.ProcEnv.getuid ()
 173         val user = Posix.SysDB.Passwd.name (Posix.SysDB.getpwuid uid)
 174
 175         val () = Acl.read Config.aclFile
 176         val () = Domain.setUser user
 177
 178         val () = f ()
 179
 180         val context = OpenSSL.context (Config.certDir ^ "/" ^ user ^ ".pem",
 181                                        Config.keyDir ^ "/" ^ user ^ "/key.pem",
 182                                        Config.trustStore)
 183     in
 184         (user, context)
 185     end
 186
 187 fun requestBio f =
 188     let
 189         val (user, context) = requestContext f
 190     in
 191         (user, OpenSSL.connect (context, dispatcher))
 192     end
 193
 194 fun request fname =
 195     let
 196         val (user, bio) = requestBio (fn () => ignore (check fname))
 197
 198         val inf = TextIO.openIn fname
 199
 200         fun loop lines =
 201             case TextIO.inputLine inf of
 202                 NONE => String.concat (List.rev lines)
 203               | SOME line => loop (line :: lines)
 204
 205         val code = loop []
 206     in
 207         TextIO.closeIn inf;
 208         Msg.send (bio, MsgConfig code);
 209         case Msg.recv bio of
 210             NONE => print "Server closed connection unexpectedly.\n"
 211           | SOME m =>
 212             case m of
 213                 MsgOk => print "Configuration succeeded.\n"
 214               | MsgError s => print ("Configuration failed: " ^ s ^ "\n")
 215               | _ => print "Unexpected server reply.\n";
 216         OpenSSL.close bio
 217     end
 218     handle ErrorMsg.Error => ()
 219
 220 fun requestDir dname =
 221     let
 222         val _ = ErrorMsg.reset ()
 223
 224         val (user, bio) = requestBio (fn () => checkDir dname)
 225
 226         val b = basis ()
 227
 228         val dir = Posix.FileSys.opendir dname
 229
 230         fun loop files =
 231             case Posix.FileSys.readdir dir of
 232                 NONE => (Posix.FileSys.closedir dir;
 233                          files)
 234               | SOME fname =>
 235                 if notTmp fname then
 236                     loop (OS.Path.joinDirFile {dir = dname,
 237                                                file = fname}
 238                           :: files)
 239                 else
 240                     loop files
 241
 242         val files = loop []
 243         val (_, files) = Order.order (SOME b) files
 244
 245         val _ = if !ErrorMsg.anyErrors then
 246                     raise ErrorMsg.Error
 247                 else
 248                     ()
 249
 250         val codes = map (fn fname =>
 251                             let
 252                                 val inf = TextIO.openIn fname
 253
 254                                 fun loop lines =
 255                                     case TextIO.inputLine inf of
 256                                         NONE => String.concat (rev lines)
 257                                       | SOME line => loop (line :: lines)
 258                             in
 259                                 loop []
 260                                 before TextIO.closeIn inf
 261                             end) files
 262     in
 263         if !ErrorMsg.anyErrors then
 264             ()
 265         else
 266             (Msg.send (bio, MsgMultiConfig codes);
 267              case Msg.recv bio of
 268                  NONE => print "Server closed connection unexpectedly.\n"
 269                | SOME m =>
 270                  case m of
 271                      MsgOk => print "Configuration succeeded.\n"
 272                    | MsgError s => print ("Configuration failed: " ^ s ^ "\n")
 273                    | _ => print "Unexpected server reply.\n";
 274              OpenSSL.close bio)
 275     end
 276     handle ErrorMsg.Error => ()
 277
 278 fun requestGrant acl =
 279     let
 280         val (user, bio) = requestBio (fn () => ())
 281     in
 282         Msg.send (bio, MsgGrant acl);
 283         case Msg.recv bio of
 284             NONE => print "Server closed connection unexpectedly.\n"
 285           | SOME m =>
 286             case m of
 287                 MsgOk => print "Grant succeeded.\n"
 288               | MsgError s => print ("Grant failed: " ^ s ^ "\n")
 289               | _ => print "Unexpected server reply.\n";
 290         OpenSSL.close bio
 291     end
 292
 293 fun requestRevoke acl =
 294     let
 295         val (user, bio) = requestBio (fn () => ())
 296     in
 297         Msg.send (bio, MsgRevoke acl);
 298         case Msg.recv bio of
 299             NONE => print "Server closed connection unexpectedly.\n"
 300           | SOME m =>
 301             case m of
 302                 MsgOk => print "Revoke succeeded.\n"
 303               | MsgError s => print ("Revoke failed: " ^ s ^ "\n")
 304               | _ => print "Unexpected server reply.\n";
 305         OpenSSL.close bio
 306     end
 307
 308 fun requestListPerms user =
 309     let
 310         val (_, bio) = requestBio (fn () => ())
 311     in
 312         Msg.send (bio, MsgListPerms user);
 313         (case Msg.recv bio of
 314              NONE => (print "Server closed connection unexpectedly.\n";
 315                       NONE)
 316            | SOME m =>
 317              case m of
 318                  MsgPerms perms => SOME perms
 319                | MsgError s => (print ("Listing failed: " ^ s ^ "\n");
 320                                 NONE)
 321                | _ => (print "Unexpected server reply.\n";
 322                        NONE))
 323         before OpenSSL.close bio
 324     end
 325
 326 fun requestWhoHas perm =
 327     let
 328         val (_, bio) = requestBio (fn () => ())
 329     in
 330         Msg.send (bio, MsgWhoHas perm);
 331         (case Msg.recv bio of
 332              NONE => (print "Server closed connection unexpectedly.\n";
 333                       NONE)
 334            | SOME m =>
 335              case m of
 336                  MsgWhoHasResponse users => SOME users
 337                | MsgError s => (print ("whohas failed: " ^ s ^ "\n");
 338                                 NONE)
 339                | _ => (print "Unexpected server reply.\n";
 340                        NONE))
 341         before OpenSSL.close bio
 342     end
 343
 344 fun requestRegen () =
 345     let
 346         val (_, bio) = requestBio (fn () => ())
 347     in
 348         Msg.send (bio, MsgRegenerate);
 349         case Msg.recv bio of
 350             NONE => print "Server closed connection unexpectedly.\n"
 351           | SOME m =>
 352             case m of
 353                 MsgOk => print "Regeneration succeeded.\n"
 354               | MsgError s => print ("Regeneration failed: " ^ s ^ "\n")
 355               | _ => print "Unexpected server reply.\n";
 356         OpenSSL.close bio
 357     end
 358
 359 fun requestRmdom dom =
 360     let
 361         val (_, bio) = requestBio (fn () => ())
 362     in
 363         Msg.send (bio, MsgRmdom dom);
 364         case Msg.recv bio of
 365             NONE => print "Server closed connection unexpectedly.\n"
 366           | SOME m =>
 367             case m of
 368                 MsgOk => print "Removal succeeded.\n"
 369               | MsgError s => print ("Removal failed: " ^ s ^ "\n")
 370               | _ => print "Unexpected server reply.\n";
 371         OpenSSL.close bio
 372     end
 373
 374 fun regenerate context =
 375     let
 376         val b = basis ()
 377         val () = Tycheck.disallowExterns ()
 378
 379         val () = Domain.resetGlobal ()
 380
 381         fun contactNode (node, ip) =
 382             if node = Config.defaultNode then
 383                 Domain.resetLocal ()
 384             else let
 385                     val bio = OpenSSL.connect (context,
 386                                                ip
 387                                                ^ ":"
 388                                                ^ Int.toString Config.slavePort)
 389                 in
 390                     Msg.send (bio, MsgRegenerate);
 391                     case Msg.recv bio of
 392                         NONE => print "Slave closed connection unexpectedly\n"
 393                       | SOME m =>
 394                         case m of
 395                             MsgOk => print ("Slave " ^ node ^ " pre-regeneration finished\n")
 396                           | MsgError s => print ("Slave " ^ node
 397                                                  ^ " returned error: " ^
 398                                                  s ^ "\n")
 399                           | _ => print ("Slave " ^ node
 400                                         ^ " returned unexpected command\n");
 401                     OpenSSL.close bio
 402                 end
 403
 404         fun doUser user =
 405             let
 406                 val _ = Domain.setUser user
 407                 val _ = ErrorMsg.reset ()
 408
 409                 val dname = Config.domtoolDir user
 410
 411                 val dir = Posix.FileSys.opendir dname
 412
 413                 fun loop files =
 414                     case Posix.FileSys.readdir dir of
 415                         NONE => (Posix.FileSys.closedir dir;
 416                                  files)
 417                       | SOME fname =>
 418                         if notTmp fname then
 419                             loop (OS.Path.joinDirFile {dir = dname,
 420                                                        file = fname}
 421                                   :: files)
 422                         else
 423                             loop files
 424
 425                 val files = loop []
 426                 val (_, files) = Order.order (SOME b) files
 427             in
 428                 if !ErrorMsg.anyErrors then
 429                     print ("User " ^ user ^ "'s configuration has errors!\n")
 430                 else
 431                     app eval' files
 432             end
 433                 handle IO.Io _ => ()
 434                      | OS.SysErr (s, _) => print ("System error processing user " ^ user ^ ": " ^ s ^ "\n")
 435     in
 436         app contactNode Config.nodeIps;
 437         Env.pre ();
 438         app doUser (Acl.users ());
 439         Env.post ()
 440     end
 441
 442 fun service () =
 443     let
 444         val () = Acl.read Config.aclFile
 445
 446         val context = OpenSSL.context (Config.serverCert,
 447                                        Config.serverKey,
 448                                        Config.trustStore)
 449         val _ = Domain.set_context context
 450
 451         val sock = OpenSSL.listen (context, Config.dispatcherPort)
 452
 453         fun loop () =
 454             case OpenSSL.accept sock of
 455                 NONE => ()
 456               | SOME bio =>
 457                 let
 458                     val user = OpenSSL.peerCN bio
 459                     val () = print ("\nConnection from " ^ user ^ "\n")
 460                     val () = Domain.setUser user
 461
 462                     fun doConfig codes =
 463                         let
 464                             val _ = print "Configuration:\n"
 465                             val _ = app (fn s => (print s; print "\n")) codes
 466                             val _ = print "\n"
 467
 468                             val outname = OS.FileSys.tmpName ()
 469
 470                             fun doOne code =
 471                                 let
 472                                     val outf = TextIO.openOut outname
 473                                 in
 474                                     TextIO.output (outf, code);
 475                                     TextIO.closeOut outf;
 476                                     eval' outname
 477                                 end
 478                         in
 479                             (Env.pre ();
 480                              app doOne codes;
 481                              Env.post ();
 482                              Msg.send (bio, MsgOk))
 483                             handle ErrorMsg.Error =>
 484                                    (print "Compilation error\n";
 485                                     Msg.send (bio,
 486                                               MsgError "Error during configuration evaluation"))
 487                                  | OpenSSL.OpenSSL s =>
 488                                    (print "OpenSSL error\n";
 489                                     Msg.send (bio,
 490                                               MsgError
 491                                                   ("Error during configuration evaluation: "
 492                                                    ^ s)));
 493                            OS.FileSys.remove outname;
 494                            (ignore (OpenSSL.readChar bio);
 495                             OpenSSL.close bio)
 496                            handle OpenSSL.OpenSSL _ => ();
 497                            loop ()
 498                         end
 499
 500                     fun cmdLoop () =
 501                         case Msg.recv bio of
 502                             NONE => (OpenSSL.close bio
 503                                      handle OpenSSL.OpenSSL _ => ();
 504                                      loop ())
 505                           | SOME m =>
 506                             case m of
 507                                 MsgConfig code => doConfig [code]
 508                               | MsgMultiConfig codes => doConfig codes
 509
 510                               | MsgGrant acl =>
 511                                 if Acl.query {user = user, class = "priv", value = "all"} then
 512                                     ((Acl.grant acl;
 513                                       Acl.write Config.aclFile;
 514                                       Msg.send (bio, MsgOk);
 515                                       print ("Granted permission " ^ #value acl ^ " to " ^ #user acl ^ " in " ^ #class acl ^ ".\n"))
 516                                      handle OpenSSL.OpenSSL s =>
 517                                             (print "OpenSSL error\n";
 518                                              Msg.send (bio,
 519                                                        MsgError
 520                                                            ("Error during granting: "
 521                                                             ^ s)));
 522                                     (ignore (OpenSSL.readChar bio);
 523                                      OpenSSL.close bio)
 524                                     handle OpenSSL.OpenSSL _ => ();
 525                                     loop ())
 526                                 else
 527                                     ((Msg.send (bio, MsgError "Not authorized to grant privileges");
 528                                       print "Unauthorized user asked to grant a permission!\n";
 529                                       ignore (OpenSSL.readChar bio);
 530                                       OpenSSL.close bio)
 531                                      handle OpenSSL.OpenSSL _ => ();
 532                                      loop ())
 533
 534                               | MsgRevoke acl =>
 535                                 if Acl.query {user = user, class = "priv", value = "all"} then
 536                                     ((Acl.revoke acl;
 537                                       Acl.write Config.aclFile;
 538                                       Msg.send (bio, MsgOk);
 539                                       print ("Revoked permission " ^ #value acl ^ " from " ^ #user acl ^ " in " ^ #class acl ^ ".\n"))
 540                                      handle OpenSSL.OpenSSL s =>
 541                                             (print "OpenSSL error\n";
 542                                              Msg.send (bio,
 543                                                        MsgError
 544                                                            ("Error during revocation: "
 545                                                             ^ s)));
 546                                     (ignore (OpenSSL.readChar bio);
 547                                      OpenSSL.close bio)
 548                                     handle OpenSSL.OpenSSL _ => ();
 549                                     loop ())
 550                                 else
 551                                     ((Msg.send (bio, MsgError "Not authorized to revoke privileges");
 552                                       print "Unauthorized user asked to revoke a permission!\n";
 553                                       ignore (OpenSSL.readChar bio);
 554                                       OpenSSL.close bio)
 555                                      handle OpenSSL.OpenSSL _ => ();
 556                                      loop ())
 557
 558                               | MsgListPerms user =>
 559                                 ((Msg.send (bio, MsgPerms (Acl.queryAll user));
 560                                   print ("Sent permission list for user " ^ user ^ ".\n"))
 561                                  handle OpenSSL.OpenSSL s =>
 562                                         (print "OpenSSL error\n";
 563                                          Msg.send (bio,
 564                                                    MsgError
 565                                                        ("Error during permission listing: "
 566                                                         ^ s)));
 567                                 (ignore (OpenSSL.readChar bio);
 568                                  OpenSSL.close bio)
 569                                 handle OpenSSL.OpenSSL _ => ();
 570                                 loop ())
 571
 572                               | MsgWhoHas perm =>
 573                                 ((Msg.send (bio, MsgWhoHasResponse (Acl.whoHas perm));
 574                                   print ("Sent whohas response for " ^ #class perm ^ " / " ^ #value perm ^ ".\n"))
 575                                  handle OpenSSL.OpenSSL s =>
 576                                         (print "OpenSSL error\n";
 577                                          Msg.send (bio,
 578                                                    MsgError
 579                                                        ("Error during whohas: "
 580                                                         ^ s)));
 581                                 (ignore (OpenSSL.readChar bio);
 582                                  OpenSSL.close bio)
 583                                 handle OpenSSL.OpenSSL _ => ();
 584                                 loop ())
 585
 586                               | MsgRmdom dom =>
 587                                 if Acl.query {user = user, class = "priv", value = "all"}
 588                                    orelse Acl.query {user = user, class = "domain", value = dom} then
 589                                     ((Domain.rmdom dom;
 590                                       Msg.send (bio, MsgOk);
 591                                       print ("Removed domain " ^ dom ^ ".\n"))
 592                                      handle OpenSSL.OpenSSL s =>
 593                                             (print "OpenSSL error\n";
 594                                              Msg.send (bio,
 595                                                        MsgError
 596                                                            ("Error during revocation: "
 597                                                             ^ s)));
 598                                     (ignore (OpenSSL.readChar bio);
 599                                      OpenSSL.close bio)
 600                                     handle OpenSSL.OpenSSL _ => ();
 601                                     loop ())
 602                                 else
 603                                     ((Msg.send (bio, MsgError "Not authorized to remove that domain");
 604                                       print "Unauthorized user asked to remove a domain!\n";
 605                                       ignore (OpenSSL.readChar bio);
 606                                       OpenSSL.close bio)
 607                                      handle OpenSSL.OpenSSL _ => ();
 608                                      loop ())
 609
 610                               | MsgRegenerate =>
 611                                 if Acl.query {user = user, class = "priv", value = "regen"}
 612                                    orelse Acl.query {user = user, class = "priv", value = "all"} then
 613                                     ((regenerate context;
 614                                       Msg.send (bio, MsgOk);
 615                                       print "Regenerated all configuration.\n")
 616                                      handle OpenSSL.OpenSSL s =>
 617                                             (print "OpenSSL error\n";
 618                                              Msg.send (bio,
 619                                                        MsgError
 620                                                            ("Error during regeneration: "
 621                                                             ^ s)));
 622                                     (ignore (OpenSSL.readChar bio);
 623                                      OpenSSL.close bio)
 624                                     handle OpenSSL.OpenSSL _ => ();
 625                                     loop ())
 626                                 else
 627                                     ((Msg.send (bio, MsgError "Not authorized to regeneration");
 628                                       print "Unauthorized user asked to regenerate!\n";
 629                                       ignore (OpenSSL.readChar bio);
 630                                       OpenSSL.close bio)
 631                                      handle OpenSSL.OpenSSL _ => ();
 632                                      loop ())
 633
 634                               | _ =>
 635                                 (Msg.send (bio, MsgError "Unexpected command")
 636                                  handle OpenSSL.OpenSSL _ => ();
 637                                  OpenSSL.close bio
 638                                  handle OpenSSL.OpenSSL _ => ();
 639                                  loop ())
 640                 in
 641                     cmdLoop ()
 642                 end
 643                     handle OpenSSL.OpenSSL s =>
 644                            (print ("OpenSSL error: " ^ s ^ "\n");
 645                             OpenSSL.close bio
 646                             handle OpenSSL.OpenSSL _ => ();
 647                             loop ())
 648                          | OS.SysErr (s, _) =>
 649                            (print ("System error: " ^ s ^ "\n");
 650                             OpenSSL.close bio
 651                             handle OpenSSL.OpenSSL _ => ();
 652                             loop ())
 653     in
 654         print "Listening for connections....\n";
 655         loop ();
 656         OpenSSL.shutdown sock
 657     end
 658
 659 fun slave () =
 660     let
 661         val host = Slave.hostname ()
 662
 663         val context = OpenSSL.context (Config.certDir ^ "/" ^ host ^ ".pem",
 664                                        Config.keyDir ^ "/" ^ host ^ "/key.pem",
 665                                        Config.trustStore)
 666
 667         val sock = OpenSSL.listen (context, Config.slavePort)
 668
 669         fun loop () =
 670             case OpenSSL.accept sock of
 671                 NONE => ()
 672               | SOME bio =>
 673                 let
 674                     val peer = OpenSSL.peerCN bio
 675                     val () = print ("\nConnection from " ^ peer ^ "\n")
 676                 in
 677                     if peer <> Config.dispatcherName then
 678                         (print "Not authorized!\n";
 679                          OpenSSL.close bio;
 680                          loop ())
 681                     else let
 682                             fun loop' files =
 683                                 case Msg.recv bio of
 684                                     NONE => print "Dispatcher closed connection unexpectedly\n"
 685                                   | SOME m =>
 686                                     case m of
 687                                         MsgFile file => loop' (file :: files)
 688                                       | MsgDoFiles => (Slave.handleChanges files;
 689                                                        Msg.send (bio, MsgOk))
 690                                       | MsgRegenerate => (Domain.resetLocal ();
 691                                                           Msg.send (bio, MsgOk))
 692                                       | _ => (print "Dispatcher sent unexpected command\n";
 693                                               Msg.send (bio, MsgError "Unexpected command"))
 694                         in
 695                             loop' [];
 696                             ignore (OpenSSL.readChar bio);
 697                             OpenSSL.close bio;
 698                             loop ()
 699                         end
 700                 end handle OpenSSL.OpenSSL s =>
 701                            (print ("OpenSSL error: "^ s ^ "\n");
 702                             OpenSSL.close bio
 703                                           handle OpenSSL.OpenSSL _ => ();
 704                             loop ())
 705                          | OS.SysErr (s, _) =>
 706                            (print ("System error: "^ s ^ "\n");
 707                             OpenSSL.close bio
 708                             handle OpenSSL.OpenSSL _ => ();
 709                             loop ())
 710     in
 711         loop ();
 712         OpenSSL.shutdown sock
 713     end
 714
 715 fun autodocBasis outdir =
 716     let
 717         val dir = Posix.FileSys.opendir Config.libRoot
 718
 719         fun loop files =
 720             case Posix.FileSys.readdir dir of
 721                 NONE => (Posix.FileSys.closedir dir;
 722                          files)
 723               | SOME fname =>
 724                 if String.isSuffix ".dtl" fname then
 725                     loop (OS.Path.joinDirFile {dir = Config.libRoot,
 726                                                file = fname}
 727                           :: files)
 728                 else
 729                     loop files
 730
 731         val files = loop []
 732     in
 733         Autodoc.autodoc {outdir = outdir, infiles = files}
 734     end
 735
 736 end