[pschweitzer] 62657: [KERNEL32] - Fix buffer overrun - Fix incorrect return check CID #514675 CID #716130 CID #731615

Author: pschweitzer
Date: Sun Apr  6 14:24:00 2014
New Revision: 62657

URL: http://svn.reactos.org/svn/reactos?rev=62657&view=rev
Log:
[KERNEL32]
- Fix buffer overrun
- Fix incorrect return check

CID #514675
CID #716130
CID #731615

Modified:
    trunk/reactos/dll/win32/kernel32/client/compname.c
    trunk/reactos/dll/win32/kernel32/client/file/copy.c
    trunk/reactos/dll/win32/kernel32/client/vdm.c

Modified: trunk/reactos/dll/win32/kernel32/client/compname.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/kernel32/client/…
==============================================================================
--- trunk/reactos/dll/win32/kernel32/client/compname.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/kernel32/client/compname.c	[iso-8859-1] Sun Apr  6 14:24:00
2014
@@ -301,10 +301,12 @@
 GetComputerNameA(LPSTR lpBuffer, LPDWORD lpnSize)
 {
     BOOL ret;
+
     ret = GetComputerNameExA(ComputerNameNetBIOS, lpBuffer, lpnSize);    
-    if(!ret && GetLastError() == ERROR_MORE_DATA)
-      SetLastError(ERROR_BUFFER_OVERFLOW);
-      return ret;
+    if (!ret && GetLastError() == ERROR_MORE_DATA)
+        SetLastError(ERROR_BUFFER_OVERFLOW);
+
+    return ret;
 }
 
 

Modified: trunk/reactos/dll/win32/kernel32/client/file/copy.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/kernel32/client/…
==============================================================================
--- trunk/reactos/dll/win32/kernel32/client/file/copy.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/kernel32/client/file/copy.c	[iso-8859-1] Sun Apr  6 14:24:00
2014
@@ -325,7 +325,7 @@
     PUNICODE_STRING lpExistingFileNameW;
 
     lpExistingFileNameW = Basep8BitStringToStaticUnicodeString(lpExistingFileName);
-    if (!lpExistingFileName)
+    if (!lpExistingFileNameW)
     {
         return FALSE;
     }

Modified: trunk/reactos/dll/win32/kernel32/client/vdm.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/kernel32/client/…
==============================================================================
--- trunk/reactos/dll/win32/kernel32/client/vdm.c	[iso-8859-1] (original)
+++ trunk/reactos/dll/win32/kernel32/client/vdm.c	[iso-8859-1] Sun Apr  6 14:24:00 2014
@@ -232,7 +232,7 @@
          * %s%c  : Nothing if DOS VDM, -w if WoW VDM, -ws if separate WoW VDM.
          */
         _snwprintf(CommandLine,
-                   sizeof(CommandLine),
+                   sizeof(CommandLine) / sizeof(CommandLine[0]),
                    L"\"%s\\ntvdm.exe\" -i%lx %s%c",
                    Buffer,
                    DosSeqId,
@@ -246,7 +246,7 @@
          * %s%c  : Nothing if DOS VDM, -w if WoW VDM, -ws if separate WoW VDM.
          */
         _snwprintf(CommandLine,
-                   sizeof(CommandLine),
+                   sizeof(CommandLine) / sizeof(CommandLine[0]),
                    L"\"%s\\ntvdm.exe\" %s%c",
                    Buffer,
                    (BinaryType == BINARY_TYPE_DOS) ? L" " : L"-w",