Gordon Swan

Hi Martijn

I have done the edit. I hope this will this is alright now.

Gordon

Gordon Swan wrote:I am trying to run this example program using Neatbeans 6.1 but I am getting errors when I use the Security Manager. Could someone give me an idea how to use the Security Manager in Netbeans? This is the Security Policy file I am using:

Policy file:

grant {
permission java.security.AllPermission;
};


The Server:

package rmi; import java.rmi.Naming; import java.rmi.registry.*; import java.rmi.RMISecurityManager; /** A server-side program that creates and registers StudentImpl * objects with the RMI registry for use by clients */ public class StudentEnrollment { public static void main( String[] args ) { System.setProperty( "java.security.policy", "RMISecurity.policy" ); if ( System.getSecurityManager() == null ) { System.setSecurityManager( new RMISecurityManager() ); } try { LocateRegistry.createRegistry(1099); StudentImpl[] students = { new StudentImpl( 1001, "Maria Jones" ), new StudentImpl( 1002, "Patricia Hartswell" ), new StudentImpl( 1003, "Darius Smith" ), new StudentImpl( 1004, "Mary Bagshaw" ), new StudentImpl( 1005, "Iona Miller" ) }; for ( int i = 0; i < students.length; i++ ) { int id = students[i].getID(); Naming.rebind( "Student" + id , students[i] ); } System.out.println( "Student objects bound." ); } catch ( Exception x ) { x.printStackTrace(); } } }


These are the errors I am getting:

java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:1099 connect,resolve)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
at java.security.AccessController.checkPermission(AccessController.java:546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkConnect(SecurityManager.java:1034)
at java.net.Socket.connect(Socket.java:513)
at java.net.Socket.connect(Socket.java:469)
at java.net.Socket.<init>(Socket.java:366)
at java.net.Socket.<init>(Socket.java:180)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:160)
at rmi.StudentEnrollment.main(StudentEnrollment.java:30)


G Swan

Hi Martijn

I am not sure what you mean. Could please expand a bit.

G Swan

I am trying to run this example program using Neatbeans 6.1 but I am getting errors when I use the Security Manager. I am attaching the file so could someone give me an idea how to use the Security Manager in Netbeans? This is the Security Policy file I am using:

Policy file:

grant {
permission java.security.AllPermission;
};


The Server:

package rmi; import java.rmi.Naming; import java.rmi.registry.*; import java.rmi.RMISecurityManager; /** A server-side program that creates and registers StudentImpl * objects with the RMI registry for use by clients */ public class StudentEnrollment { public static void main( String[] args ) { System.setProperty( "java.security.policy", "RMISecurity.policy" ); if ( System.getSecurityManager() == null ) { System.setSecurityManager( new RMISecurityManager() ); } try { LocateRegistry.createRegistry(1099); StudentImpl[] students = { new StudentImpl( 1001, "Maria Jones" ), new StudentImpl( 1002, "Patricia Hartswell" ), new StudentImpl( 1003, "Darius Smith" ), new StudentImpl( 1004, "Mary Bagshaw" ), new StudentImpl( 1005, "Iona Miller" ) }; for ( int i = 0; i < students.length; i++ ) { int id = students[i].getID(); Naming.rebind( "Student" + id , students[i] ); } System.out.println( "Student objects bound." ); } catch ( Exception x ) { x.printStackTrace(); } } }



These are the errors I am getting:

java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:1099 connect,resolve)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
at java.security.AccessController.checkPermission(AccessController.java:546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkConnect(SecurityManager.java:1034)
at java.net.Socket.connect(Socket.java:513)
at java.net.Socket.connect(Socket.java:469)
at java.net.Socket.<init>(Socket.java:366)
at java.net.Socket.<init>(Socket.java:180)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:160)
at rmi.StudentEnrollment.main(StudentEnrollment.java:30)


G Swan

Hello Mike

This is the code I used to set up the Security Manager:

System.setProperty("java.security.policy", "RMISecurity.policy");
if(System.getSecurityManager()== null)
{
System.setSecurityManager(new RMISecurityManager());
}

I am using the the following policy file which is in my package folder:

grant {
permission java.security.AllPermission;
};

Where should I insert the following line:

java -Djava.security.policy=policyfilename


G Swan

Could anyone point me to a simple updated tutorial for creating an RMI project in netbeans?

G Swan

I am creating an RMI project in netbeans but when I setup the Security Manager, access is denied but the code runs perfect without it. Could someone give me a simple example to show how to run the code with the Security Manager? I need it for an assigment.

G Swan