[greatlrd] 16453: Add proper memory alloc ProcessInput, the error handling for memory handling need to be improve

Add proper memory alloc ProcessInput, the error handling for memory
handling need to be improve
Modified: trunk/reactos/subsys/system/cmd/cmd.c
  _____  

Modified: trunk/reactos/subsys/system/cmd/cmd.c
--- trunk/reactos/subsys/system/cmd/cmd.c	2005-07-06 12:20:57 UTC
(rev 16452)
+++ trunk/reactos/subsys/system/cmd/cmd.c	2005-07-06 13:09:23 UTC
(rev 16453)
@@ -137,6 +137,8 @@

  *
  *    06-jul-2005 (Magnus Olsen <magnus(a)greatlord.com>)
  *        translate '%errorlevel%' to the internal value.
+ *        Add proper memmory alloc ProcessInput, the error 
+ *        handling for memmory handling need to be improve
  */
 
 #include "precomp.h"
@@ -983,30 +985,51 @@
 						if ((tp != NULL) &&
 						    (tp <= _tcschr(ip,
_T(' ')) - 1))
 						{
-							TCHAR evar[512];
+              INT size = 512;
+							TCHAR *evar;
 							*tp = _T('\0');
-            
-							/* FIXME: This
is just a quick hack!! */
-							/* Do a proper
memory allocation!! */                                 
-                          
+
+              /* FIXME: Correct error handling when it can not alloc
memmory */
+              evar = malloc ( size * sizeof(TCHAR));
+              if (evar==NULL) 
+                  return 1; 
+
if (_tcsicmp(ip,_T("errorlevel")) ==0)
               {       
                 memset(evar,0,512 * sizeof(TCHAR));
                 _itot(nErrorLevel,evar,10);        
                 cp = _stpcpy (cp, evar);
-              } 
-							else if
(GetEnvironmentVariable (ip, evar, 512))
+              }               
+							else 
               {
+                size = GetEnvironmentVariable (ip, evar, size);
+                if (size!=0)
+                {
+                    evar = realloc(evar,size * sizeof(TCHAR) );
+                    if (evar!=NULL)
+                    {
+                      size = GetEnvironmentVariable (ip, evar, size);
+                    }
+                }
+
+                if (size)
+                {
 								 cp =
_stpcpy (cp, evar);
+                }
               }
-              
+
+              if (evar!=NULL)
+              {
+                free(evar);
+              } 
 							ip = tp + 1;
+
 						}
 						else
 						{
 							*cp++ = _T('%');
 						}              
-             
+           
 						break;
 				}
 				continue;