How to "translate" from VBS to JS following code ?

Question

1.00/5 (2 votes)

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VBScript

Const HKEY_LOCAL_MACHINE = &H80000002

strComputer = "."
Set StdOut = WScript.StdOut

Set oReg=GetObject( "winmgmts:{impersonationLevel=impersonate}!\\" & _
    strComputer & "\root\default:StdRegProv" )

strKeyPath = "SYSTEM\MountedDevices"

strValueName = "\??\Volume{714ce42f-d2a2-11e4-824f-806e6f6e6963}"
oReg.GetBinaryValue HKEY_LOCAL_MACHINE, strKeyPath, strValueName, strValue
msg = "" 
blank = " " 
For i = lBound( strValue ) to uBound( strValue )
    msg = msg & blank & strValue( i )
Next
StdOut.WriteLine strValueName & blank & msg

It outputs:

\??\Volume{714ce42f-d2a2-11e4-824f-806e6f6e6963}  196 193 54 16 0 0 16 0 0 0 0 0

When I try to do the same in JS, like:

JavaScript

HKLM = 0x80000002;
var strComputer = "."
var oReg=GetObject( "winmgmts:{impersonationLevel=impersonate}!\\\\" +  
    strComputer + "\\root\\default:StdRegProv")
... some lines omitted
var t1, t2, t3 = null, t4, t5;
t1 = "SYSTEM\\MountedDevices"; // path to ( name, values ) pairs
t2 = "\\??\\Volume{714ce42f-d2a2-11e4-824f-806e6f6e6963}"; // name of the value
t4 = oReg.GetBinaryValue( HKLM, t1, t2, t3 );

t3 is null after GetBinaryValue execution. t4 is NUMBER equal to 2, success as I hope :)

Posted 3-May-15 9:20am

Member 11624828

Updated 3-May-15 11:00am

v8

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Member 11624828 · Accepted Answer · 2015-05-03T19:11:00

Have "translated" by myself:

JavaScript

var strComputer = "."
var oReg = GetObject( "winmgmts:{impersonationLevel=impersonate}!\\\\" +
    strComputer + "\\root\\default:StdRegProv" );
method   = oReg.Methods_.Item( "GetBinaryValue" );
inparams = method.InParameters.SpawnInstance_();
inparams.hDefKey     = 0x80000002;
inparams.sSubKeyName = "SYSTEM\\MountedDevices";
inparams.sValueName  = "\\??\\Volume{714ce42f-d2a2-11e4-824f-806e6f6e6963}";

outparams = oReg.ExecMethod_( method.Name, inparams );// run GetBinaryValue

if ( outparams.ReturnValue == 0 )
{
  t3 = VBArray( outparams.uValue ).toArray();
  t4 = inparams.sValueName;
  for ( var i = 0; i < t3.length; i++ ) t4 += " " + t3[ i ];
  WScript.Echo( t4 );
}

WScript.Quit( 0 );

This code outputs the same as VBS code.