* to allow all of the MBeanServer operations specified below.
Otherwise, for a granted or requested permission, it must be one of the
following:
MBeanServerPermission("createMBeanServer") implies
MBeanServerPermission("newMBeanServer").
*
* @since 1.5
*/
public class MBeanServerPermission extends BasicPermission {
private static final long serialVersionUID = -5661980843569388590L;
private final static int
CREATE = 0,
FIND = 1,
NEW = 2,
RELEASE = 3,
N_NAMES = 4;
private final static String[] names = {
"createMBeanServer",
"findMBeanServer",
"newMBeanServer",
"releaseMBeanServer",
};
private final static int
CREATE_MASK = 1<
This constructor is equivalent to
MBeanServerPermission(name,null).
* or one of the allowed names or a comma-separated
list of the allowed names.
*/
public MBeanServerPermission(String name) {
this(name, null);
}
/** Create a new MBeanServerPermission with the given name.
@param name the name of the granted permission. It must respect the constraints spelt out in the description of the {@link MBeanServerPermission} class. @param actions the associated actions. This parameter is not currently used and must be null or the empty string. @exception NullPointerException if the name is null. @exception IllegalArgumentException if the name is not* or one of the allowed names or a comma-separated
list of the allowed names, or if actions is a non-null
non-empty string.
*
* @throws NullPointerException if name is null.
* @throws IllegalArgumentException if name is empty or
* if arguments are invalid.
*/
public MBeanServerPermission(String name, String actions) {
super(getCanonicalName(parseMask(name)), actions);
/* It's annoying to have to parse the name twice, but since
Permission.getName() is final and since we can't access "this"
until after the call to the superclass constructor, there
isn't any very clean way to do this. MBeanServerPermission
objects aren't constructed very often, luckily. */
mask = parseMask(name);
/* Check that actions is a null empty string */
if (actions != null && actions.length() > 0)
throw new IllegalArgumentException("MBeanServerPermission " +
"actions must be null: " +
actions);
}
MBeanServerPermission(int mask) {
super(getCanonicalName(mask));
this.mask = impliedMask(mask);
}
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
in.defaultReadObject();
mask = parseMask(getName());
}
static int simplifyMask(int mask) {
if ((mask & CREATE_MASK) != 0)
mask &= ~NEW_MASK;
return mask;
}
static int impliedMask(int mask) {
if ((mask & CREATE_MASK) != 0)
mask |= NEW_MASK;
return mask;
}
static String getCanonicalName(int mask) {
if (mask == ALL_MASK)
return "*";
mask = simplifyMask(mask);
synchronized (canonicalNames) {
if (canonicalNames[mask] == null)
canonicalNames[mask] = makeCanonicalName(mask);
}
return canonicalNames[mask];
}
private static String makeCanonicalName(int mask) {
final StringBuilder buf = new StringBuilder();
for (int i = 0; i < N_NAMES; i++) {
if ((mask & (1<Checks if this MBeanServerPermission object "implies" the specified * permission.
* *More specifically, this method returns true if:
* *The createMBeanServer permission implies the
* newMBeanServer permission.
* @param obj the object we are testing for equality with this object.
* @return true if the objects are equal.
*/
public boolean equals(Object obj) {
if (obj == this)
return true;
if (! (obj instanceof MBeanServerPermission))
return false;
MBeanServerPermission that = (MBeanServerPermission) obj;
return (this.mask == that.mask);
}
public PermissionCollection newPermissionCollection() {
return new MBeanServerPermissionCollection();
}
}
/**
* Class returned by {@link MBeanServerPermission#newPermissionCollection()}.
*
* @serial include
*/
/*
* Since every collection of MBSP can be represented by a single MBSP,
* that is what our PermissionCollection does. We need to define a
* PermissionCollection because the one inherited from BasicPermission
* doesn't know that createMBeanServer implies newMBeanServer.
*
* Though the serial form is defined, the TCK does not check it. We do
* not require independent implementations to duplicate it. Even though
* PermissionCollection is Serializable, instances of this class will
* hardly ever be serialized, and different implementations do not
* typically exchange serialized permission collections.
*
* If we did require that a particular form be respected here, we would
* logically also have to require it for
* MBeanPermission.newPermissionCollection, which would preclude an
* implementation from defining a PermissionCollection there with an
* optimized "implies" method.
*/
class MBeanServerPermissionCollection extends PermissionCollection {
/** @serial Null if no permissions in collection, otherwise a
single permission that is the union of all permissions that
have been added. */
private MBeanServerPermission collectionPermission;
private static final long serialVersionUID = -5661980843569388590L;
public synchronized void add(Permission permission) {
if (!(permission instanceof MBeanServerPermission)) {
final String msg =
"Permission not an MBeanServerPermission: " + permission;
throw new IllegalArgumentException(msg);
}
if (isReadOnly())
throw new SecurityException("Read-only permission collection");
MBeanServerPermission mbsp = (MBeanServerPermission) permission;
if (collectionPermission == null)
collectionPermission = mbsp;
else if (!collectionPermission.implies(permission)) {
int newmask = collectionPermission.mask | mbsp.mask;
collectionPermission = new MBeanServerPermission(newmask);
}
}
public synchronized boolean implies(Permission permission) {
return (collectionPermission != null &&
collectionPermission.implies(permission));
}
public synchronized Enumeration