[Fwd: Security problem accessing MBeanServer from a servlet]

Reposting to Security and Servlet newsgroups.
-------- Original Message --------
Subject: Security problem accessing MBeanServer from a servlet
Date: 10 Feb 2004 13:02:09 -0800
From: Alain <[email protected]>
Reply-To: Alain <[email protected]>
Organization: BEA NEWS SITE
Newsgroups: weblogic.developer.interest.management
Hi,
I am trying to understand how WLS 7.0 secures a call to an MBean. Got
the following
scenario:
- I am in a servlet context
- I have created and registered an MBean with the WLS MBeanServer. Fine
so far
- Within the same call I can retrieve the MBean attributes. Fine so far
- I keep the MBeanServer reference in an object global to the servlet
context
The problem:
- When I do another request and try to use the cached MBeanServer
instance to
access the MBean, I get the following error:
weblogic.management.NoAccessRuntimeException: Access not allowed for
subject:
principals=[], on ResourceType ...
Any idea?
Alain

PaulF <paulf@reply_in_newsgroup.com> wrote:
On 10 Feb 2004 13:02:09 -0800, Alain <[email protected]> wrote:
Hi,
I am trying to understand how WLS 7.0 secures a call to an MBean. Got
the following
scenario:
- I am in a servlet context
- I have created and registered an MBean with the WLS MBeanServer.Fine
so far
- Within the same call I can retrieve the MBean attributes. Fine sofar
- I keep the MBeanServer reference in an object global to the servlet
context
The problem:
- When I do another request and try to use the cached MBeanServer
instance to
access the MBean, I get the following error:
weblogic.management.NoAccessRuntimeException: Access not allowed for
subject:
principals=[], on ResourceType ...
Any idea?
AlainWhat ResourceType are you trying to access. From the Exception you're
trying to access it as an Anonymous user (principals=[]) and evidently
you're attempting to access something that is protected. I can't tell
what
from the snippet you've included.
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
Thanks Paul for your reply.
You are right. I can access my custom MBeans if I am authenticated for example
as an Administrator. My problem is that I want any application to access this
MBean authenticated or not. I am trying to find how I could grant permission to
this MBean to everyone. Still searching.
Thanks.

Similar Messages

Security problem accessing MBeanServer from a servlet

Hi,
I am trying to understand how WLS 7.0 secures a call to an MBean. Got the following
scenario:
- I am in a servlet context
- I have created and registered an MBean with the WLS MBeanServer. Fine so far
- Within the same call I can retrieve the MBean attributes. Fine so far
- I keep the MBeanServer reference in an object global to the servlet context
The problem:
- When I do another request and try to use the cached MBeanServer instance to
access the MBean, I get the following error:
weblogic.management.NoAccessRuntimeException: Access not allowed for subject:
principals=[], on ResourceType ...
Any idea?
Alain

PaulF <paulf@reply_in_newsgroup.com> wrote:
On 10 Feb 2004 13:02:09 -0800, Alain <[email protected]> wrote:
Hi,
I am trying to understand how WLS 7.0 secures a call to an MBean. Got
the following
scenario:
- I am in a servlet context
- I have created and registered an MBean with the WLS MBeanServer.Fine
so far
- Within the same call I can retrieve the MBean attributes. Fine sofar
- I keep the MBeanServer reference in an object global to the servlet
context
The problem:
- When I do another request and try to use the cached MBeanServer
instance to
access the MBean, I get the following error:
weblogic.management.NoAccessRuntimeException: Access not allowed for
subject:
principals=[], on ResourceType ...
Any idea?
AlainWhat ResourceType are you trying to access. From the Exception you're
trying to access it as an Anonymous user (principals=[]) and evidently
you're attempting to access something that is protected. I can't tell
what
from the snippet you've included.
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/
Thanks Paul for your reply.
You are right. I can access my custom MBeans if I am authenticated for example
as an Administrator. My problem is that I want any application to access this
MBean authenticated or not. I am trying to find how I could grant permission to
this MBean to everyone. Still searching.
Thanks.

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The behavior is the same in JRun and Tomcat.
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Thanks for your help.
null

Yes, I did. Actually, if I run my servlet in JDeveloper (Web-to-Go), it all works fine. I also extracted the code that calls the EJB from the servlet and I tested it in a small Java application, and it also works fine.
Things stop to work when I deploy my servlet in JRun or in Tomcat.
It appears that my code is correct, but the environment I try to run it is not, and I can't figure out what's wrong.
Can anyone help me?
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Sandeep Desai ([email protected]):
Have you provided the environmental settings in the servlet.
It should be :
import oracle.aurora.jndi.sess_iiop.ServiceCtx;
env.put(Context.URL_PKG_PREFIXES, "oracle.aurora.jndi");
env.put(Context.SECURITY_PRINCIPAL, username);
env.put(Context.SECURITY_CREDENTIALS, password);
env.put(Context.SECURITY_AUTHENTICATION, ServiceCtx.NON_SSL_LOGIN);
InitialContext ctx = new InitialContext(env);
Object obj = ctx.lookup("test/EJBHome");
HomeObject home = PortableRemoteObject.narrow(
obj,"HomeObject.class");
RemoteObject remote = home.create();
This should make it work!!
<HR></BLOCKQUOTE>
null

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Thanks
Pavan
Example code from Jintegra website:
public class MatlabExample {
public static void main(java.lang.String[] args) throws Exception {
try {
// DCOM authentication: Make sure NT Domain, NT User, NT Password are valid credentials.
// Uncomment this line if MatlabExample.java remotely accesses MATLAB :
// com.linar.jintegra.AuthInfo.setDefault("NT DOMAIN", "NT USER", "NT PASSWORD");
// Create the MATLAB object
// Specify host name or IP address of MATLAB machine as parameter if
// MatlabExample.java remotely accesses MATLAB.
// mlapp.MLApp mlApp = new mlapp.MLApp("123.456.789.0");
mlapp.MLApp mlApp = new mlapp.MLApp();
String result = mlApp.execute("a = [1 2 3 4; 5 6 7 8;]");
System.out.println("Execute result is " + result);
double mreal[][] = new double[2][4];
double mimage[] = new double[0];
mlApp.getFullMatrix("a", "base", new Object[]{mreal}, new Object[]{mimage});
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 4; j++) {
System.out.println(mreal[i][j]);
} finally {
com.linar.jintegra.Cleaner.releaseAll();
}

......How are you declaring the class in your JSP? ... are you instantiating it as a bean using the useBean tag, or just instantiating it in your code like normal.
Maybe you could post the relevant JSP code too?
Hello again,
Only the last string is populating after the file has be tokenized. What I'll like to accomplish is passing the very first string in the file. I did not get too far in the JSP file setup because the code is still in it's testing stage, but any help will be highly appreciated.
Here is the JSP code
<%@page import="dev.*" %>
<%@page session="true" language="java" import="java.io.*" %>
<jsp:useBean id="wagerhist" scope="request" class="dev.RoundDetail2" />
<html>
<head>
<title>Round Detail</title>
<body>
<table width="530" bordercolor="#000000" valign="top">
    <tr>
          <td align="left" width="19%">Game ID<%=wagerhist.string_gameID%></td>
          <td align="left" width="30%"> </td>
          <td align="left" width="20%">card1</td>
          <td align="left" width="31%"> </td>
        </tr>
</table>
</body>
</html>

[Fwd: Security problem accessing MBeanServer from a servlet]

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