Failure to check Java version, while reading registry from JavaScript code

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
    <head>
        <title>Reading Registry Value</title>
        <script type="text/javascript">




            function readJREValue()

            {
                var WshShell = new ActiveXObject("WScript.Shell");
                var value = WshShell.RegRead("HKLM\\Software\\JavaSoft\\Java Runtime Environment\\BrowserJavaVersion");
                document.write("Version OF Java Runtime Environment is: " + value);
                        document.write("<br>");
            };



            function detectBrowser()
        {
        var N= navigator.appName;
        var UA= navigator.userAgent;
        var temp;
        var browserVersion= UA.match(/(opera|chrome|safari|firefox|msie)\/?\s*(\.?\d+(\.\d+)*)/i);
        if(browserVersion && (temp= UA.match(/version\/([\.\d]+)/i))!= null)
        browserVersion[2]= temp[1];
        browserVersion= browserVersion? [browserVersion[1], browserVersion[2]]: [N, navigator.appVersion,'-?'];

        document.write("MSIE & ContentVerse Software Property")
        document.write("<br>");
        document.write("Browser Name & Version:  " + browserVersion);
        document.write("<br>");




        readValue();
readJREValue();


};
function readValue() {
            try
            {
                var WshShell = new ActiveXObject("CVOOCX");
            //    var value = WshShell.RegRead("HKLM\\Software\\computhink\\Contentverse OnLine\\Contentverse Flavor");
              //  document.write("Value of ContentVerse Flavor: " + value);
              document.write("<br>");
              document.write("ContentVerse Flavor: " + WshShell.Flavor);
              document.write("<br>");
              document.write("ContentVerse Installed path " + WshShell.Home);
            //  document.write("<br>");

              }
              catch(e)
              {
                 document.write("Contentverse Dll is not registered");
              }


            };

        </script>
    </head>
    <body onload="javascript: detectBrowser()">

    </body>
</html>

This code is working fine when i am run this file from my desktop, but when i Keep this file under wwwroot and then trying to exeute like Http://localhost/javascript.html, it is displaying only result from readvalue() and not executing the readJREvalue().

Posted 8-Oct-13 23:35pm

Rayan Khan

Updated 12-Nov-13 8:27am

Kornfeld Eliyahu Peter

v3

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Kornfeld Eliyahu Peter · Answer 1 · 2013-10-09T00:24:00

Solution 1

It is a permission problem.
When you run from the desktop you use your own identity context and have permission to read registry.
But when running form inside iis you got the identity of the pool (ApplicationPoolIdentity by default). It is more than possible that that identity has no permissions to read registry...

Posted 9-Oct-13 0:24am

Kornfeld Eliyahu Peter

Comments

Rayan Khan 9-Oct-13 6:41am

but readvalue() function is executin ........Then readJREvalue is not executing..

Kornfeld Eliyahu Peter 9-Oct-13 7:11am

According the code you posted readvalue does not read registry...

Rayan Khan 9-Oct-13 7:33am

Then give proper solution....

Kornfeld Eliyahu Peter 9-Oct-13 8:01am

Solution to what?
That readvalue does not read the registry?
Or that pool identity has no permissions to read registry?

To solve your permission problem you must add permissions to your pool identity - or better change pool identity...

But I have to say - without knowing what you try to do - that reading the registry from inside a web application is bad (very bad) practice. So the real solution is to solve you app problem without reading it...