[tkreuzer] 33329: rename 2nd parameter of NtUserGetClipboardData from Unknown1 to pBuffer. Use SEH to copy data.

Author: tkreuzer
Date: Tue May  6 15:09:34 2008
New Revision: 33329

URL: http://svn.reactos.org/svn/reactos?rev=33329&view=rev
Log:
rename 2nd parameter of NtUserGetClipboardData from Unknown1 to pBuffer. Use SEH to copy data.

Modified:
    trunk/reactos/include/reactos/win32k/ntuser.h
    trunk/reactos/subsystems/win32/win32k/ntuser/clipboard.c

Modified: trunk/reactos/include/reactos/win32k/ntuser.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/include/reactos/win32k/ntus...
==============================================================================
--- trunk/reactos/include/reactos/win32k/ntuser.h [iso-8859-1] (original)
+++ trunk/reactos/include/reactos/win32k/ntuser.h [iso-8859-1] Tue May  6 15:09:34 2008
@@ -1169,7 +1169,7 @@
 NTAPI
 NtUserGetClipboardData(
   UINT uFormat,
-  DWORD Unknown1);
+  PVOID pBuffer);

INT
 NTAPI
@@ -1614,7 +1614,7 @@

#define NUMC_SENDMESSAGE            0x02B0
 // Kernel has option to use TO or normal msg send, based on type of msg.
-#define NUMC_SENDMESSAGEWTOOPTION   0x02B1 
+#define NUMC_SENDMESSAGEWTOOPTION   0x02B1
 #define NUMC_SENDMESSAGETIMEOUT     0x02B2
 #define NUMC_BROADCASTSYSTEMMESSAGE 0x02B4
 #define NUMC_SENDNOTIFYMESSAGE      0x02B7

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/clipboard.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/ntu...
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/clipboard.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/clipboard.c [iso-8859-1] Tue May  6 15:09:34 2008
@@ -598,17 +598,16 @@
 }

HANDLE STDCALL
-NtUserGetClipboardData(UINT uFormat, DWORD Unknown1)
+NtUserGetClipboardData(UINT uFormat, PVOID pBuffer)
 {
     HANDLE ret = NULL;
-    PCHAR buffer;

UserEnterShared();

if (intIsClipboardOpenByMe())
     {
         /* when Unknown1 is zero, we returns to user32 the data size */
-        if (Unknown1 == 0)
+        if (!pBuffer)
         {
             PCLIPBOARDELEMENT data = intIsFormatAvailable(uFormat);

@@ -624,7 +623,7 @@
                         co_IntSendMessage(ClipboardOwnerWindow->hSelf, WM_RENDERFORMAT, (WPARAM)uFormat, 0);
                         data = intIsFormatAvailable(uFormat);
                         ASSERT(data->size);
-                        ret = (HANDLE)data->size;
+                        ret = (HANDLE)(ULONG_PTR)data->size;
                     }
                 }
                 else
@@ -635,7 +634,7 @@
                     }

}
-                ret = (HANDLE)data->size;
+                ret = (HANDLE)(ULONG_PTR)data->size;
             }
             else
             {
@@ -668,20 +667,36 @@
                         }
                         else
                         {
-                            buffer = (PCHAR)Unknown1;
-                            memcpy(buffer, (PCHAR)synthesizedData, synthesizedDataSize);
+                            ret = (HANDLE)pBuffer;
+
+                            _SEH_TRY
+                            {
+                                ProbeForWrite(pBuffer, synthesizedDataSize, 1);
+                                memcpy(pBuffer, (PCHAR)synthesizedData, synthesizedDataSize);
+                            }
+                            _SEH_HANDLE
+                            {
+                                ret = NULL;
+                            }
+                            _SEH_END

freeSynthesizedData();
-
-                            ret = (HANDLE)Unknown1;
                         }
                     }
                     else
                     {
-                        buffer = (PCHAR)Unknown1;
-                        memcpy(buffer, (PCHAR)data->hData, data->size);
-
-                        ret = (HANDLE)Unknown1;
+                        ret = (HANDLE)pBuffer;
+
+                        _SEH_TRY
+                        {
+                            ProbeForWrite(pBuffer, data->size, 1);
+                            memcpy(pBuffer, (PCHAR)data->hData, data->size);
+                        }
+                        _SEH_HANDLE
+                        {
+                            ret = NULL;
+                        }
+                        _SEH_END
                     }
                 }