Basic HTML documentation generation
[hcoop/domtool2.git] / src / main.sml
index bcadb63..87a1b73 100644 (file)
 
 structure Main :> MAIN = struct
 
 
 structure Main :> MAIN = struct
 
-open Ast Print
+open Ast MsgTypes Print
 
 structure SM = StringMap
 
 
 structure SM = StringMap
 
-val dmy = ErrorMsg.dummyLoc
-
-fun init () = (F_OpenSSL_SML_add_all_algorithms.f' ();
-              F_OpenSSL_SML_load_error_strings.f' ();
-              F_OpenSSL_SML_load_BIO_strings.f' ())
-
-val () = init ()
-
-val defaultT : record ref = ref SM.empty
-val defaultV : (unit -> exp) SM.map ref = ref SM.empty
-
-fun registerDefault (name, t, v) =
-    case SM.find (!defaultT, name) of
-       NONE => (defaultT := SM.insert (!defaultT, name, t);
-                defaultV := SM.insert (!defaultV, name, v))
-      | SOME _ => raise Fail "Duplicate default environment variable"
-
-fun tInit () = (TAction ((CRoot, dmy),
-                        !defaultT,
-                        StringMap.empty),
-               dmy)
-
-
+fun init () = Acl.read Config.aclFile
            
 fun check' G fname =
     let
            
 fun check' G fname =
     let
-       (*val _ = print ("Check " ^ fname ^ "\n")*)
        val prog = Parse.parse fname
     in
        if !ErrorMsg.anyErrors then
            G
        else
        val prog = Parse.parse fname
     in
        if !ErrorMsg.anyErrors then
            G
        else
-           Tycheck.checkFile G (tInit ()) prog
+           Tycheck.checkFile G (Defaults.tInit ()) prog
     end
 
 fun basis () =
     end
 
 fun basis () =
@@ -76,7 +53,7 @@ fun basis () =
                    loop files
 
        val files = loop []
                    loop files
 
        val files = loop []
-       val files = Order.order files
+       val (_, files) = Order.order files
     in
        if !ErrorMsg.anyErrors then
            Env.empty
     in
        if !ErrorMsg.anyErrors then
            Env.empty
@@ -92,19 +69,22 @@ fun check fname =
        val b = basis ()
     in
        if !ErrorMsg.anyErrors then
        val b = basis ()
     in
        if !ErrorMsg.anyErrors then
-           (b, NONE)
+           raise ErrorMsg.Error
        else
            let
                val _ = ErrorMsg.reset ()
                val prog = Parse.parse fname
            in
                if !ErrorMsg.anyErrors then
        else
            let
                val _ = ErrorMsg.reset ()
                val prog = Parse.parse fname
            in
                if !ErrorMsg.anyErrors then
-                   (Env.empty, NONE)
+                   raise ErrorMsg.Error
                else
                    let
                else
                    let
-                       val G' = Tycheck.checkFile b (tInit ()) prog
+                       val G' = Tycheck.checkFile b (Defaults.tInit ()) prog
                    in
                    in
-                       (G', #3 prog)
+                       if !ErrorMsg.anyErrors then
+                           raise ErrorMsg.Error
+                       else
+                           (G', #3 prog)
                    end
            end
     end
                    end
            end
     end
@@ -134,116 +114,198 @@ fun eval fname =
     case reduce fname of
        (SOME body') =>
        if !ErrorMsg.anyErrors then
     case reduce fname of
        (SOME body') =>
        if !ErrorMsg.anyErrors then
-           ()
+           raise ErrorMsg.Error
        else
        else
-           Eval.exec (SM.map (fn f => f ()) (!defaultV)) body'
-      | NONE => ()
+           Eval.exec (Defaults.eInit ()) body'
+      | NONE => raise ErrorMsg.Error
 
 
-val dispatcher : C.rw ZString.zstring' =
-    ZString.dupML' (Config.dispatcher ^ ":" ^ Int.toString Config.dispatcherPort)
+val dispatcher =
+    Config.dispatcher ^ ":" ^ Int.toString Config.dispatcherPort
 
 
-val listenOn : C.rw ZString.zstring' =
-    ZString.dupML' ("localhost:" ^ Int.toString Config.dispatcherPort)
-
-fun ssl_err s =
+fun hostname () =
     let
     let
-       val err = F_OpenSSL_SML_get_error.f ()
+       val inf = TextIO.openIn "/etc/hostname"
     in
     in
-       print s;
-       print "\nReason: ";
-       print (ZString.toML (F_OpenSSL_SML_lib_error_string.f err));
-       print ":";
-       print (ZString.toML (F_OpenSSL_SML_func_error_string.f err));
-       print ":";
-       print (ZString.toML (F_OpenSSL_SML_reason_error_string.f err));
-       print "\n"
+       case TextIO.inputLine inf of
+           NONE => (TextIO.closeIn inf; raise Fail "No line in /etc/hostname")
+         | SOME line => (TextIO.closeIn inf; String.substring (line, 0, size line - 1))
     end
 
     end
 
-exception OpenSSL of string
+fun request fname =
+    let
+       val uid = Posix.ProcEnv.getuid ()
+       val user = Posix.SysDB.Passwd.name (Posix.SysDB.getpwuid uid)
+
+       val () = Acl.read Config.aclFile
+       val () = Domain.setUser user
+       val _ = check fname
 
 
-val readBuf : (C.uchar, C.rw) C.obj C.ptr' = C.alloc' C.S.uchar (Word.fromInt Config.bufSize)
-val bufSize = Int32.fromInt Config.bufSize
+       val context = OpenSSL.context (Config.certDir ^ "/" ^ user ^ ".pem",
+                                      Config.keyDir ^ "/" ^ user ^ ".pem",
+                                      Config.trustStore)
 
 
-fun readOne bio =
-    let
-       val r = F_OpenSSL_SML_read.f' (bio, C.Ptr.inject' readBuf, bufSize)
+       val bio = OpenSSL.connect (context, dispatcher)
+
+       val inf = TextIO.openIn fname
+
+       fun loop lines =
+           case TextIO.inputLine inf of
+               NONE => String.concat (List.rev lines)
+             | SOME line => loop (line :: lines)
+
+       val code = loop []
     in
     in
-       if r = 0 then
-           NONE
-       else if r < 0 then
-           raise OpenSSL "BIO_read failed"
-       else
-           SOME (CharVector.tabulate (Int32.toInt r,
-                                   fn i => chr (Word32.toInt (C.Get.uchar'
-                                                                  (C.Ptr.sub' C.S.uchar (readBuf, i))))))
+       TextIO.closeIn inf;
+       Msg.send (bio, MsgConfig code);
+       case Msg.recv bio of
+           NONE => print "Server closed connection unexpectedly.\n"
+         | SOME m =>
+           case m of
+               MsgOk => print "Configuration succeeded.\n"
+             | MsgError s => print ("Configuration failed: " ^ s ^ "\n")
+             | _ => print "Unexpected server reply.\n";
+       OpenSSL.close bio
     end
     end
+    handle ErrorMsg.Error => ()
 
 
-fun writeAll (bio, s) =
+fun service () =
     let
     let
-       val buf = ZString.dupML' s
+       val () = Acl.read Config.aclFile
+       
+       val context = OpenSSL.context (Config.serverCert,
+                                      Config.serverKey,
+                                      Config.trustStore)
+       val _ = Domain.set_context context
 
 
-       fun loop (buf, len) =
-           let
-               val r = F_OpenSSL_SML_write.f' (bio, C.Ptr.inject' buf, len)
-           in
-               if r = len then
-                   ()
-               else if r <= 0 then
-                   (C.free' buf;
-                    raise OpenSSL "BIO_write failed")
-               else
-                   loop (C.Ptr.|+! C.S.uchar (buf, Int32.toInt r), Int32.- (len, r))
-           end
+       val sock = OpenSSL.listen (context, Config.dispatcherPort)
+
+       fun loop () =
+           case OpenSSL.accept sock of
+               NONE => ()
+             | SOME bio =>
+               let
+                   val user = OpenSSL.peerCN bio
+                   val () = print ("\nConnection from " ^ user ^ "\n")
+                   val () = Domain.setUser user
+
+                   fun cmdLoop () =
+                       case Msg.recv bio of
+                           NONE => (OpenSSL.close bio
+                                    handle OpenSSL.OpenSSL _ => ();
+                                    loop ())
+                         | SOME m =>
+                           case m of
+                               MsgConfig code =>
+                               let
+                                   val _ = print "Configuration:\n"
+                                   val _ = print code
+                                   val _ = print "\n"
+
+                                   val outname = OS.FileSys.tmpName ()
+                                   val outf = TextIO.openOut outname
+                               in
+                                   TextIO.output (outf, code);
+                                   TextIO.closeOut outf;
+                                   (eval outname;
+                                    Msg.send (bio, MsgOk))
+                                    handle ErrorMsg.Error =>
+                                           (print "Compilation error\n";
+                                            Msg.send (bio,
+                                                      MsgError "Error during configuration evaluation"))
+                                         | OpenSSL.OpenSSL s =>
+                                           (print "OpenSSL error\n";
+                                            Msg.send (bio,
+                                                      MsgError
+                                                          ("Error during configuration evaluation: "
+                                                           ^ s)));
+                                   OS.FileSys.remove outname;
+                                   (ignore (OpenSSL.readChar bio);
+                                    OpenSSL.close bio)
+                                   handle OpenSSL.OpenSSL _ => ();
+                                   loop ()
+                               end
+                             | _ =>
+                               (Msg.send (bio, MsgError "Unexpected command")
+                                handle OpenSSL.OpenSSL _ => ();
+                                OpenSSL.close bio
+                                handle OpenSSL.OpenSSL _ => ();
+                                loop ())
+               in
+                   cmdLoop ()
+               end
     in
     in
-       loop (buf, Int32.fromInt (size s));
-       C.free' buf
+       loop ();
+       OpenSSL.shutdown sock
     end
 
     end
 
-fun request fname =
+fun slave () =
     let
     let
-       val bio = F_OpenSSL_SML_new_connect.f' dispatcher
+       val host = hostname ()
+
+       val context = OpenSSL.context (Config.certDir ^ "/" ^ host ^ ".pem",
+                                      Config.keyDir ^ "/" ^ host ^ ".pem",
+                                      Config.trustStore)
+
+       val sock = OpenSSL.listen (context, Config.slavePort)
+
+       fun loop () =
+           case OpenSSL.accept sock of
+               NONE => ()
+             | SOME bio =>
+               let
+                   val peer = OpenSSL.peerCN bio
+                   val () = print ("\nConnection from " ^ peer ^ "\n")
+               in
+                   if peer <> Config.dispatcherName then
+                       (print "Not authorized!\n";
+                        OpenSSL.close bio;
+                        loop ())
+                   else let
+                           fun loop' files =
+                               case Msg.recv bio of
+                                   NONE => print "Dispatcher closed connection unexpectedly\n"
+                                 | SOME m =>
+                                   case m of
+                                       MsgFile file => loop' (file :: files)
+                                     | MsgDoFiles => (Slave.handleChanges files;
+                                                      Msg.send (bio, MsgOk))
+                                     | _ => (print "Dispatcher sent unexpected command\n";
+                                             Msg.send (bio, MsgError "Unexpected command"))
+                       in
+                           loop' [];
+                           ignore (OpenSSL.readChar bio);
+                           OpenSSL.close bio;
+                           loop ()
+                       end
+               end handle OpenSSL.OpenSSL s =>
+                          (print ("OpenSSL error: "^ s ^ "\n");
+                           OpenSSL.close bio
+                                         handle OpenSSL.OpenSSL _ => ();
+                           loop ())
     in
     in
-       if C.Ptr.isNull' bio then
-           (ssl_err ("Error initializating connection to dispatcher at " ^ Config.dispatcher);
-            F_OpenSSL_SML_free_all.f' bio)
-       else if F_OpenSSL_SML_do_connect.f' bio <= 0 then
-           (ssl_err ("Error connecting to dispatcher at " ^ Config.dispatcher);
-            F_OpenSSL_SML_free_all.f' bio)
-       else let
-               val inf = TextIO.openIn fname
-
-               fun loop () =
-                   case TextIO.inputLine inf of
-                       NONE => ()
-                     | SOME line => (writeAll (bio, line);
-                                     loop ())
-           in
-               loop ();
-               TextIO.closeIn inf;
-               F_OpenSSL_SML_free_all.f' bio
-           end
+       loop ();
+       OpenSSL.shutdown sock
     end
 
     end
 
-fun serviceOne () =
+fun autodocBasis outdir =
     let
     let
-       val bio = F_OpenSSL_SML_new_accept.f' listenOn
+       val dir = Posix.FileSys.opendir Config.libRoot
+
+       fun loop files =
+           case Posix.FileSys.readdir dir of
+               NONE => (Posix.FileSys.closedir dir;
+                        files)
+             | SOME fname =>
+               if String.isSuffix ".dtl" fname then
+                   loop (OS.Path.joinDirFile {dir = Config.libRoot,
+                                              file = fname}
+                         :: files)
+               else
+                   loop files
+
+       val files = loop []
     in
     in
-       if C.Ptr.isNull' bio then
-           (ssl_err "Error initializating listener";
-            F_OpenSSL_SML_free_all.f' bio)
-       else if F_OpenSSL_SML_do_accept.f' bio <= 0 then
-           (ssl_err "Error accepting connection";
-            F_OpenSSL_SML_free_all.f' bio)
-       else let
-               fun loop () =
-                   case readOne bio of
-                       NONE => ()
-                     | SOME line => (print line;
-                                     loop ())
-           in
-               loop ();
-               F_OpenSSL_SML_free_all.f' bio
-           end
+       Autodoc.autodoc {outdir = outdir, infiles = files}
     end
 
 end
     end
 
 end