[pschweitzer] 58701: [TELNET] Don't attempt to close undefined handles. Also properly set them on failure as "the contents of the output parameters are indeterminate" on failure.

Author: pschweitzer
Date: Sat Apr  6 23:27:56 2013
New Revision: 58701

URL: http://svn.reactos.org/svn/reactos?rev=58701&view=rev
Log:
[TELNET]
Don't attempt to close undefined handles.
Also properly set them on failure as "the contents of the output parameters are indeterminate" on failure.

Modified:
    trunk/reactos/base/applications/network/telnet/src/tnmisc.cpp

Modified: trunk/reactos/base/applications/network/telnet/src/tnmisc.cpp
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/network/t...
==============================================================================
--- trunk/reactos/base/applications/network/telnet/src/tnmisc.cpp [iso-8859-1] (original)
+++ trunk/reactos/base/applications/network/telnet/src/tnmisc.cpp [iso-8859-1] Sat Apr  6 23:27:56 2013
@@ -8,9 +8,9 @@
     BOOL fCreated;
     STARTUPINFO si;
     SECURITY_ATTRIBUTES sa;
-    HANDLE hInRead;
-    HANDLE hOutWrite;
-    HANDLE hErrWrite;
+    HANDLE hInRead = INVALID_HANDLE_VALUE;
+    HANDLE hOutWrite = INVALID_HANDLE_VALUE;
+    HANDLE hErrWrite = INVALID_HANDLE_VALUE;

// Create pipes
     // initialize security attributes for handle inheritance (for WinNT)
@@ -19,16 +19,22 @@
     sa.lpSecurityDescriptor  = NULL;

// create STDIN pipe
-    if( !CreatePipe( &hInRead, phInWrite, &sa, 0 ))
+    if( !CreatePipe( &hInRead, phInWrite, &sa, 0 )) {
+        hInRead = INVALID_HANDLE_VALUE;
         goto error;
+    }

// create STDOUT pipe
-    if( !CreatePipe( phOutRead, &hOutWrite, &sa, 0 ))
+    if( !CreatePipe( phOutRead, &hOutWrite, &sa, 0 )) {
+        hOutWrite = INVALID_HANDLE_VALUE;
         goto error;
+    }

// create STDERR pipe
-    if( !CreatePipe( phErrRead, &hErrWrite, &sa, 0 ))
+    if( !CreatePipe( phErrRead, &hErrWrite, &sa, 0 )) {
+        hErrWrite = INVALID_HANDLE_VALUE;
         goto error;
+    }

// process startup information
     memset( &si, 0, sizeof( si ));
@@ -63,9 +69,9 @@
     return TRUE;

error:
-    CloseHandle( hInRead );
-    CloseHandle( hOutWrite );
-    CloseHandle( hErrWrite );
+    if (hInRead != INVALID_HANDLE_VALUE) CloseHandle( hInRead );
+    if (hOutWrite != INVALID_HANDLE_VALUE) CloseHandle( hOutWrite );
+    if (hErrWrite != INVALID_HANDLE_VALUE) CloseHandle( hErrWrite );
     CloseHandle( ppi->hProcess );
     CloseHandle( ppi->hThread );