ip_of_node support
[hcoop/domtool2.git] / src / main.sml
index 86da95f..490f66d 100644 (file)
 
 structure Main :> MAIN = struct
 
-open Ast Print
-
-val dmy = ErrorMsg.dummyLoc
-
-val tInit = (TAction ((CRoot, dmy),
-                     StringMap.empty,
-                     StringMap.empty),
-            dmy)
+open Ast MsgTypes Print
 
+structure SM = StringMap
 
+fun init () = Acl.read Config.aclFile
            
 fun check' G fname =
     let
-       (*val _ = print ("Check " ^ fname ^ "\n")*)
        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 () =
@@ -48,39 +42,49 @@ fun basis () =
 
        fun loop files =
            case Posix.FileSys.readdir dir of
-               NONE => files
+               NONE => (Posix.FileSys.closedir dir;
+                        files)
              | SOME fname =>
                if String.isSuffix ".dtl" fname then
-                   loop (String.concatWith "/" [Config.libRoot, fname]
+                   loop (OS.Path.joinDirFile {dir = Config.libRoot,
+                                              file = fname}
                          :: files)
                else
                    loop files
 
        val files = loop []
-       val files = Order.order files
+       val (_, files) = Order.order files
     in
-       foldl (fn (fname, G) => check' G fname) Env.empty files
+       if !ErrorMsg.anyErrors then
+           Env.empty
+       else
+           foldl (fn (fname, G) => check' G fname) Env.empty files
     end
 
 fun check fname =
     let
        val _ = ErrorMsg.reset ()
+       val _ = Env.preTycheck ()
 
        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
-                   (Env.empty, NONE)
+                   raise ErrorMsg.Error
                else
                    let
-                       val G' = Tycheck.checkFile b tInit prog
+                       val G' = Tycheck.checkFile b (Defaults.tInit ()) prog
                    in
-                       (G', #3 prog)
+                       if !ErrorMsg.anyErrors then
+                           raise ErrorMsg.Error
+                       else
+                           (G', #3 prog)
                    end
            end
     end
@@ -110,9 +114,218 @@ fun eval fname =
     case reduce fname of
        (SOME body') =>
        if !ErrorMsg.anyErrors then
-           ()
+           raise ErrorMsg.Error
        else
-           Eval.exec StringMap.empty body'
-      | NONE => ()
+           Eval.exec (Defaults.eInit ()) body'
+      | NONE => raise ErrorMsg.Error
+
+val dispatcher =
+    Config.dispatcher ^ ":" ^ Int.toString Config.dispatcherPort
+
+fun hostname () =
+    let
+       val inf = TextIO.openIn "/etc/hostname"
+    in
+       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
+
+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 uid = Posix.ProcEnv.getuid ()
+       val user = Posix.SysDB.Passwd.name (Posix.SysDB.getpwuid uid)
+
+       val context = OpenSSL.context (Config.certDir ^ "/" ^ user ^ ".pem",
+                                      Config.keyDir ^ "/" ^ user ^ "/key.pem",
+                                      Config.trustStore)
+
+       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
+       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
+    handle ErrorMsg.Error => ()
+
+fun service () =
+    let
+       val () = Acl.read Config.aclFile
+       
+       val context = OpenSSL.context (Config.serverCert,
+                                      Config.serverKey,
+                                      Config.trustStore)
+       val _ = Domain.set_context context
+
+       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
+                   handle OpenSSL.OpenSSL s =>
+                          (print ("OpenSSL error: " ^ s ^ "\n");
+                           OpenSSL.close bio
+                           handle OpenSSL.OpenSSL _ => ();
+                           loop ())
+                        | OS.SysErr (s, _) =>
+                          (print ("System error: " ^ s ^ "\n");
+                           OpenSSL.close bio
+                           handle OpenSSL.OpenSSL _ => ();
+                           loop ())
+    in
+       print "Listening for connections....\n";
+       loop ();
+       OpenSSL.shutdown sock
+    end
+
+fun slave () =
+    let
+       val host = hostname ()
+
+       val context = OpenSSL.context (Config.certDir ^ "/" ^ host ^ ".pem",
+                                      Config.keyDir ^ "/" ^ host ^ "/key.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 ())
+                        | OS.SysErr (s, _) =>
+                          (print ("System error: "^ s ^ "\n");
+                           OpenSSL.close bio
+                           handle OpenSSL.OpenSSL _ => ();
+                           loop ())
+    in
+       loop ();
+       OpenSSL.shutdown sock
+    end
+
+fun autodocBasis outdir =
+    let
+       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
+       Autodoc.autodoc {outdir = outdir, infiles = files}
+    end
 
 end