/*

* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

*

*

*

*

*

*

*

*

*

*

*

*

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*

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*

*

*/

package java.net;

import java.security.AccessController;

import java.security.PrivilegedExceptionAction;

class NetUtil {

// Value of jdk.net.revealLocalAddress

private static boolean revealLocalAddress;

// True if jdk.net.revealLocalAddress had been read

private static volatile boolean propRevealLocalAddr;

/*

* Returns true if security check on localAddress is disabled

*/

static boolean doRevealLocalAddress() {

return propRevealLocalAddr ? revealLocalAddress

: readRevealLocalAddr();

}

private static boolean readRevealLocalAddr() {

SecurityManager sm = System.getSecurityManager();

if (sm != null) {

try {

revealLocalAddress = Boolean.parseBoolean(

AccessController.doPrivileged(

new PrivilegedExceptionAction<String>() {

@Override

public String run() {

return System.getProperty(

"jdk.net.revealLocalAddress");

}

}));

} catch (Exception e) {

//revealLocalAddress is false

}

propRevealLocalAddr = true;

}

/*

* No security manager, or security check passed or

* jdk.net.revealLocalAddress set to true

*/

return revealLocalAddress;

}

}