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- package javax.management;
- import java.security.BasicPermission;
- import java.security.Permission;
- import java.security.PermissionCollection;
- import java.util.Enumeration;
- import java.util.NoSuchElementException;
- public class MBeanServerPermission
- extends BasicPermission
- {
-
- private static final long serialVersionUID = -5661980843569388590L;
-
- public MBeanServerPermission(String name)
- {
- this(name, null);
- }
-
- public MBeanServerPermission(String name, String actions)
- {
- super(checkName(name), actions);
- if (actions != null && actions.length() > 0)
- throw new IllegalArgumentException("The supplied action list " +
- "was not equal to null or the " +
- "empty string.");
- }
-
- public boolean equals(Object obj)
- {
- if (obj instanceof MBeanServerPermission)
- {
- MBeanServerPermission o = (MBeanServerPermission) obj;
- return o.getName().equals(getName());
- }
- return false;
- }
-
- public int hashCode()
- {
- return getName().hashCode();
- }
-
- public boolean implies(Permission p)
- {
- if (p instanceof MBeanServerPermission)
- {
- if (getName().equals("*"))
- return true;
- MBeanServerPermission msp = (MBeanServerPermission) p;
- String[] thisCaps = getName().split(",");
- String[] mspCaps = msp.getName().split(",");
- for (int a = 0; a < mspCaps.length; ++a)
- {
- boolean found = false;
- String mc = mspCaps[a].trim();
- for (int b = 0; b < thisCaps.length; ++b)
- {
- String tc = thisCaps[b].trim();
- if (tc.equals(mc))
- found = true;
- if (tc.equals("createMBeanServer") &&
- mc.equals("newMBeanServer"))
- found = true;
- }
- if (!found)
- return false;
- }
- return true;
- }
- return false;
- }
-
- public PermissionCollection newPermissionCollection()
- {
- return new MBeanServerPermissionCollection();
- }
-
- private class MBeanServerPermissionCollection
- extends PermissionCollection
- {
-
- private static final long serialVersionUID = -5661980843569388590L;
-
- private MBeanServerPermission collectionPermission;
-
- @Override
- public void add(Permission p)
- {
- if (isReadOnly())
- throw new SecurityException("This collection is read only.");
- if (p instanceof MBeanServerPermission)
- {
- MBeanServerPermission msp = (MBeanServerPermission) p;
- if (collectionPermission == null)
- collectionPermission = msp;
- else
- {
- String finalString = collectionPermission.getName();
- String[] cp = finalString.split(",");
- String[] np = msp.getName().split(",");
- int createms = finalString.indexOf("createMBeanServer");
- int newms = finalString.indexOf("newMBeanServer");
- for (int a = 0; a < np.length; ++a)
- {
- boolean found = false;
- String nps = np[a].trim();
- for (int b = 0; b < cp.length; ++b)
- {
- String cps = cp[b].trim();
- if (cps.equals(nps))
- found = true;
- if (nps.equals("newMBeanServer")
- && createms != -1)
- found = true;
- if (nps.equals("createMBeanServer")
- && newms != -1)
- finalString =
- finalString.replace("newMBeanServer",
- "createMBeanServer");
- }
- if (!found)
- finalString += "," + nps;
- }
- collectionPermission =
- new MBeanServerPermission(finalString);
- }
- }
- }
-
- @Override
- public Enumeration<Permission> elements()
- {
- return new
- MBeanServerPermissionEnumeration(collectionPermission);
- }
-
- private class MBeanServerPermissionEnumeration
- implements Enumeration<Permission>
- {
-
- private MBeanServerPermission p;
-
- private boolean done;
-
- public MBeanServerPermissionEnumeration(MBeanServerPermission p)
- {
- this.p = p;
- done = false;
- }
-
- public boolean hasMoreElements()
- {
- return !done;
- }
-
- public Permission nextElement()
- {
- if (hasMoreElements())
- {
- done = true;
- return p;
- }
- else
- throw new NoSuchElementException("No more elements are available.");
- }
- }
-
- @Override
- public boolean implies(Permission p)
- {
- return collectionPermission.implies(p);
- }
- }
-
- private static String checkName(String name)
- {
- if (!(name.equals("*")))
- {
- String[] constraints = name.split(",");
- name = "";
- boolean seenCreate = false;
- boolean seenNew = false;
- boolean start = true;
- for (int a = 0; a < constraints.length; ++a)
- {
- String next = constraints[a].trim();
- if (!(next.equals("createMBeanServer") ||
- next.equals("findMBeanServer") ||
- next.equals("newMBeanServer") ||
- next.equals("releaseMBeanServer")))
- throw new IllegalArgumentException("An invalid constraint, " +
- next + ", was specified.");
- if (next.equals("newMBeanServer"))
- seenNew = true;
- else if (next.equals("createMBeanServer"))
- seenCreate = true;
- else
- {
- if (!start)
- name += ",";
- name += next;
- start = false;
- }
- }
- if (seenNew && !seenCreate)
- name += (start ? "" : ",") + "newMBeanServer";
- else if (seenCreate)
- name += (start ? "" : ",") + "createMBeanServer";
- }
- return name;
- }
- }
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