MIS telnet linux work

mystic/mis.pas

@@ -352,7 +352,6 @@ Begin
 
   Console.SetWindowTitle(WinTitle);
 
-  {$IFDEF WINDOWS}
   If bbsConfig.InetTNUse Then Begin
     TelnetServer := TServerManager.Create(bbsConfig, bbsConfig.InetTNPort, bbsConfig.INetTNNodes, NodeData, @CreateTelnet);
 
@@ -361,7 +360,6 @@ Begin
 
     Started := True;
   End;
-  {$ENDIF}
 
   If bbsConfig.InetSMTPUse Then Begin
     SMTPServer := TServerManager.Create(bbsConfig, bbsConfig.INetSMTPPort, bbsConfig.inetSMTPMax, NodeData, @CreateSMTP);

mystic/mis_client_telnet.pas

@@ -7,7 +7,9 @@ Interface
 Uses
   {$IFDEF UNIX}
     Unix,
-    //TPROCESS unit?
+    Classes,
+    Process,
+    SysUtils,
   {$ENDIF}
   {$IFDEF WINDOWS}
     Windows,
@@ -82,7 +84,7 @@ Begin
   SI.wShowWindow := SW_SHOWMINNOACTIVE;
 
   If CreateProcess(NIL, PChar(@Cmd[1]),
-    NIL, NIL, True, create_new_console + normal_priority_class, NIL, NIL, SI, PI) Then
+    NIL, NIL, True, Create_New_Console + Normal_Priority_Class, NIL, NIL, SI, PI) Then
       WaitForSingleObject (PI.hProcess, INFINITE);
 
   NI.Busy   := False;
@@ -96,13 +98,22 @@ End;
 
 {$IFDEF UNIX}
 Procedure TTelnetServer.Execute;
+Const
+  BufferSize = 4096;
 Var
   Cmd    : String;
   Num    : LongInt;
   NI     : TNodeInfoRec;
+  Proc   : TProcess;
+  Buffer : Array[1..BufferSize] of Char;
+  bRead  : LongInt;
+  bWrite : LongInt;
 Begin
+  Proc := TProcess.Create(Nil);
   Num  := ND.GetFreeNode;
-  Cmd := './mystic -n' + strI2S(Num) + ' -IP' + Client.FPeerIP + ' -HOST' + Client.FPeerName;
+
+  Proc.CommandLine := 'mystic -n' + strI2S(Num) + ' -IP' + Client.FPeerIP + ' -HOST' + Client.FPeerName;
+  Proc.Options     := [poUsePipes];
 
   FillChar(NI, SizeOf(NI), 0);
 
@@ -114,22 +125,27 @@ Begin
 
   ND.SetNodeInfo(Num, NI);
 
-  // setup and execute Cmd as defined above, setting up STDIO handles
+  Proc.Execute;
 
-  fpSystem(Cmd);  // placeholder for above
+  While Proc.Running Do Begin
+    If Proc.Output.NumBytesAvailable > 0 Then Begin
+      While Proc.Output.NumBytesAvailable > 0 Do Begin
+        bRead := Proc.Output.Read(Buffer, BufferSize);
+        Client.WriteBuf (Buffer, bRead);
+      End;
+    End Else
+    If Client.DataWaiting Then Begin
+      bWrite := Client.ReadBuf(Buffer, BufferSize);
 
-  // redirection of STDIO psuedocode loop here
-  // NOTE client class already escapes telnet protocol, no need for that!
-  //
-  // while processGoing do begin
-  //   case waitEvent(Input, output, close, wait INFINITY)
-  //     input  : push input from client to STDIO handle
-  //     output : push output from STDIO to client class
-  //     close  : break;
-  // end
+      If bWrite < 0 Then Break;
 
-  // it seems there might be a TProcess in FCL with FPC that can do this
-  // already... research!
+      If bWrite > 0 Then
+        Proc.Input.Write(Buffer, bWrite);
+    End Else
+      Sleep(25);
+  End;
+
+  Proc.Free;
 
   NI.Busy   := False;
   NI.IP     := '';
@@ -146,3 +162,107 @@ Begin
 End;
 
 End.
+
+
+
+program procoutlarge;
+{
+    Copyright (c) 2004-2011 by Marc Weustink and contributors
+
+    This example is created in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+}
+// This is a
+// WORKING
+// demo program that shows
+// how to launch an external program
+// and read from its output.
+
+uses
+  Classes, Process, SysUtils;
+
+const
+  READ_BYTES = 2048;
+
+var
+  OurCommand: String;
+  OutputLines: TStringList;
+  MemStream: TMemoryStream;
+  OurProcess: TProcess;
+  NumBytes: LongInt;
+  BytesRead: LongInt;
+
+begin
+  // A temp Memorystream is used to buffer the output
+  MemStream := TMemoryStream.Create;
+  BytesRead := 0;
+
+  OurProcess := TProcess.Create(nil);
+  // Recursive dir is a good example.
+  OurCommand:='invalid command, please fix the IFDEFS.';
+  {$IFDEF Windows}
+  //Can't use dir directly, it's built in
+  //so we just use the shell:
+  OurCommand:='cmd.exe /c "dir /s d:\dev\code\mystic\"';
+  {$ENDIF Windows}
+  {$IFDEF Unix}
+  //Needs to be tested on Linux/Unix:
+  OurCommand := 'ls --recursive --all -l /';
+  {$ENDIF Unix}
+  writeln('-- Going to run: ' + OurCommand);
+  OurProcess.CommandLine := OurCommand;
+
+  // We cannot use poWaitOnExit here since we don't
+  // know the size of the output. On Linux the size of the
+  // output pipe is 2 kB; if the output data is more, we
+  // need to read the data. This isn't possible since we are
+  // waiting. So we get a deadlock here if we use poWaitOnExit.
+  OurProcess.Options := [poUsePipes];
+  WriteLn('-- External program run started');
+  OurProcess.Execute;
+  while OurProcess.Running do
+  begin
+    // make sure we have room
+    MemStream.SetSize(BytesRead + READ_BYTES);
+
+    // try reading it
+    NumBytes := OurProcess.Output.Read((MemStream.Memory + BytesRead)^, READ_BYTES);
+    if NumBytes > 0
+    then begin
+      Inc(BytesRead, NumBytes);
+      Write('.') //Output progress to screen.
+    end
+    else begin
+      // no data, wait 100 ms
+      Sleep(100);
+    end;
+  end;
+  // read last part
+  repeat
+    // make sure we have room
+    MemStream.SetSize(BytesRead + READ_BYTES);
+    // try reading it
+    NumBytes := OurProcess.Output.Read((MemStream.Memory + BytesRead)^, READ_BYTES);
+    if NumBytes > 0
+    then begin
+      Inc(BytesRead, NumBytes);
+      Write('.');
+    end;
+  until NumBytes <= 0;
+  if BytesRead > 0 then WriteLn;
+  MemStream.SetSize(BytesRead);
+  WriteLn('-- External program run complete');
+
+  OutputLines := TStringList.Create;
+  OutputLines.LoadFromStream(MemStream);
+  WriteLn('-- External program output line count = ', OutputLines.Count, ' --');
+  for NumBytes := 0 to OutputLines.Count - 1 do
+  begin
+    WriteLn(OutputLines[NumBytes]);
+  end;
+  WriteLn('-- Program end');
+  OutputLines.Free;
+  OurProcess.Free;
+  MemStream.Free;
+end.