Source for java.lang.management.ManagementPermission

   1: /* ManagementPermission.java - Permissions for system management.
   2:    Copyright (C) 2006 Free Software Foundation
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: package java.lang.management;
  39: 
  40: import java.security.BasicPermission;
  41: 
  42: /**
  43:  * <p>
  44:  * Represents the permission to view or modify the data
  45:  * which forms part of the system management interfaces.
  46:  * Calls to methods of the system management beans,
  47:  * provided by the {@link ManagementFactory}, may perform
  48:  * checks against the current {@link java.lang.SecurityManager}
  49:  * (if any) before allowing the operation to proceed.
  50:  * Instances of this object are supplied to the
  51:  * {@link java.lang.SecurityManager} in order to perform
  52:  * these checks.  It is not normal for instances of this
  53:  * class to be created outside the use of the
  54:  * {@link java.lang.SecurityManager}.
  55:  * </p>
  56:  * <p>
  57:  * This object can represent two types of management
  58:  * permission:
  59:  * </p>
  60:  * <ul>
  61:  * <li><strong>monitor</strong> &mdash; this allows access
  62:  * to information such as the arguments supplied to the
  63:  * virtual machine, the currently loaded classes and the
  64:  * stack traces of running threads.  Malicious code may
  65:  * use this to obtain information about the system and
  66:  * exploit any vulnerabilities found.</li>
  67:  * <li><strong>control</strong> &mdash; this allows the
  68:  * information stored by the management beans to be altered.
  69:  * For example, additional debugging information (such
  70:  * as class loading traces) may be turned on or memory
  71:  * usage limits changed.  Malicious code could use
  72:  * this to alter the behaviour of the system.</li>
  73:  * </ul>
  74:  * 
  75:  * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
  76:  * @since 1.5
  77:  */
  78: public final class ManagementPermission
  79:   extends BasicPermission
  80: {
  81: 
  82:   /**
  83:    * Compatible with JDK 1.5
  84:    */
  85:   private static final long serialVersionUID = 1897496590799378737L;
  86: 
  87:   /**
  88:    * Constructs a new <code>ManagementPermission</code>
  89:    * for one of the two permission targets, "monitor"
  90:    * and "control".
  91:    *
  92:    * @param name the name of the permission this instance
  93:    *             should represent; either "monitor" or
  94:    *             "control".
  95:    * @throws IllegalArgumentException if the name is not
  96:    *                                  either "monitor"
  97:    *                                  or "control".
  98:    */
  99:   public ManagementPermission(String name)
 100:   {
 101:     super(name);
 102:     if (!(name.equals("monitor") || name.equals("control")))
 103:       throw new IllegalArgumentException("Invalid permission.");
 104:   }
 105: 
 106:   /**
 107:    * Constructs a new <code>ManagementPermission</code>
 108:    * for one of the two permission targets, "monitor"
 109:    * and "control".  Actions are not supported, so
 110:    * this value should be either <code>null</code>
 111:    * or the empty string.
 112:    *
 113:    * @param name the name of the permission this instance
 114:    *             should represent; either "monitor" or
 115:    *             "control".
 116:    * @param actions either <code>null</code> or the
 117:    *                empty string.
 118:    * @throws IllegalArgumentException if the name is not
 119:    *                                  either "monitor"
 120:    *                                  or "control", or
 121:    *                                  a value for actions
 122:    *                                  is specified.
 123:    */
 124:   public ManagementPermission(String name, String actions)
 125:   {
 126:     this(name);
 127:     if (!(actions == null || actions.equals("")))
 128:       throw new IllegalArgumentException("Invalid actions.");
 129:   }
 130:   
 131: }