info.dmtree.security

Class DmtPrincipalPermission

java.lang.Object

java.security.Permission

info.dmtree.security.DmtPrincipalPermission

All Implemented Interfaces:

Serializable, Guard

public class DmtPrincipalPermission
extends Permission

Indicates the callers authority to create DMT sessions on behalf of a remote management server. Only protocol adapters communicating with management servers should be granted this permission.

DmtPrincipalPermission has a target string which controls the name of the principal on whose behalf the protocol adapter can act. A wildcard is allowed at the end of the target string, to allow using any principal name with the given prefix. The "*" target means the adapter can create a session in the name of any principal.

Version:

$Revision: 5673 $

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DmtPrincipalPermission(String target) Creates a new DmtPrincipalPermission object with its name set to the target string.
DmtPrincipalPermission(String target, String actions) Creates a new DmtPrincipalPermission object using the 'canonical' two argument constructor.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj) Checks whether the given object is equal to this DmtPrincipalPermission instance.
String	getActions() Returns the action list (always * in the current version).
int	hashCode() Returns the hash code for this permission object.
boolean	implies(Permission p) Checks if this DmtPrincipalPermission object implies the specified permission.
PermissionCollection	newPermissionCollection() Returns a new PermissionCollection object for storing DmtPrincipalPermission objects.

Methods inherited from class java.security.Permission

checkGuard, getName, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DmtPrincipalPermission

public DmtPrincipalPermission(String target)

Creates a new DmtPrincipalPermission object with its name set to the target string. Name must be non-null and non-empty.

Parameters:

target - the name of the principal, can end with * to match any principal with the given prefix

Throws:

NullPointerException - if name is null

IllegalArgumentException - if name is empty

DmtPrincipalPermission

public DmtPrincipalPermission(String target,
                              String actions)

Creates a new DmtPrincipalPermission object using the 'canonical' two argument constructor. In this version this class does not define any actions, the second argument of this constructor must be "*" so that this class can later be extended in a backward compatible way.

Parameters:

target - the name of the principal, can end with * to match any principal with the given prefix

actions - no actions defined, must be "*" for forward compatibility

Throws:

NullPointerException - if name or actions is null

IllegalArgumentException - if name is empty or actions is not "*"

Method Detail

equals

public boolean equals(Object obj)

Checks whether the given object is equal to this DmtPrincipalPermission instance. Two DmtPrincipalPermission instances are equal if they have the same target string.

Specified by:

equals in class Permission

Parameters:

obj - the object to compare to this DmtPrincipalPermission instance

Returns:

true if the parameter represents the same permissions as this instance

getActions

public String getActions()

Returns the action list (always * in the current version).

Specified by:

getActions in class Permission

Returns:

the action string "*"

hashCode

public int hashCode()

Returns the hash code for this permission object. If two DmtPrincipalPermission objects are equal according to the equals(java.lang.Object) method, then calling this method on each of the two DmtPrincipalPermission objects must produce the same integer result.

Specified by:

hashCode in class Permission

Returns:

hash code for this permission object

implies

public boolean implies(Permission p)

Checks if this DmtPrincipalPermission object implies the specified permission. Another DmtPrincipalPermission instance is implied by this permission either if the target strings are identical, or if this target can be made identical to the other target by replacing a trailing "*" with any string.

Specified by:

implies in class Permission

Parameters:

p - the permission to check for implication

Returns:

true if this DmtPrincipalPermission instance implies the specified permission

newPermissionCollection

public PermissionCollection newPermissionCollection()

Returns a new PermissionCollection object for storing DmtPrincipalPermission objects.

Overrides:

newPermissionCollection in class Permission

Returns:

the new PermissionCollection