/*

 * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.management;

import java.lang.management.ManagementPermission;

import java.util.List;

import javax.management.ObjectName;

import javax.management.MalformedObjectNameException;

public class Util {

    private Util() {}  // there are no instances of this class

    static RuntimeException newException(Exception e) {

        throw new RuntimeException(e);

    }

    private static final String[] EMPTY_STRING_ARRAY = new String[0];

    static String[] toStringArray(List<String> list) {

        return list.toArray(EMPTY_STRING_ARRAY);

    }

    public static ObjectName newObjectName(String domainAndType, String name) {

        return newObjectName(domainAndType + ",name=" + name);

    }

    public static ObjectName newObjectName(String name) {

        try {

            return ObjectName.getInstance(name);

        } catch (MalformedObjectNameException e) {

            throw new IllegalArgumentException(e);

        }

    }

    private static ManagementPermission monitorPermission =

        new ManagementPermission("monitor");

    private static ManagementPermission controlPermission =

        new ManagementPermission("control");

    /**

     * Check that the current context is trusted to perform monitoring

     * or management.

     * <p>

     * If the check fails we throw a SecurityException, otherwise

     * we return normally.

     *

     * @exception  SecurityException  if a security manager exists and if

     *             the caller does not have ManagementPermission("control").

     */

    static void checkAccess(ManagementPermission p)

         throws SecurityException {

        SecurityManager sm = System.getSecurityManager();

        if (sm != null) {

            sm.checkPermission(p);

        }

    }

    static void checkMonitorAccess() throws SecurityException {

        checkAccess(monitorPermission);

    }

    static void checkControlAccess() throws SecurityException {

        checkAccess(controlPermission);

    }

}