org.osgi.service.useradmin
Class UserAdminPermission

java.lang.Object
  java.security.Permission
      java.security.BasicPermission
          org.osgi.service.useradmin.UserAdminPermission

All Implemented Interfaces:

java.io.Serializable, java.security.Guard

public final class UserAdminPermission
extends java.security.BasicPermission

Permission to configure and access the Role objects managed by a User Admin service.

This class represents access to the Role objects managed by a User Admin service and their properties and credentials (in the case of User objects).

The permission name is the name (or name prefix) of a property or credential. The naming convention follows the hierarchical property naming convention. Also, an asterisk may appear at the end of the name, following a ".", or by itself, to signify a wildcard match. For example: "org.osgi.security.protocol.*" or "*" is valid, but "*protocol" or "a*b" are not valid.

The UserAdminPermission with the reserved name "admin" represents the permission required for creating and removing Role objects in the User Admin service, as well as adding and removing members in a Group object. This UserAdminPermission does not have any actions associated with it.

The actions to be granted are passed to the constructor in a string containing a list of one or more comma-separated keywords. The possible keywords are: changeProperty,changeCredential, and getCredential. Their meaning is defined as follows:

 
  action
  changeProperty    Permission to change (i.e., add and remove)
                    Role object properties whose names start with
                    the name argument specified in the constructor.
  changeCredential  Permission to change (i.e., add and remove)
                    User object credentials whose names start
                    with the name argument specified in the constructor.
  getCredential     Permission to retrieve and check for the
                    existence of User object credentials whose names
                    start with the name argument specified in the
                    constructor.
 
 

The action string is converted to lowercase before processing.

Following is a PermissionInfo style policy entry which grants a user administration bundle a number of UserAdminPermission object:

 
  (org.osgi.service.useradmin.UserAdminPermission "admin")
  (org.osgi.service.useradmin.UserAdminPermission "com.foo.*" "changeProperty,getCredential,changeCredential")
  (org.osgi.service.useradmin.UserAdminPermission "user.*", "changeProperty,changeCredential")
 
 

The first permission statement grants the bundle the permission to perform any User Admin service operations of type "admin", that is, create and remove roles and configure Group objects.

The second permission statement grants the bundle the permission to change any properties as well as get and change any credentials whose names start with com.foo..

The third permission statement grants the bundle the permission to change any properties and credentials whose names start with user.. This means that the bundle is allowed to change, but not retrieve any credentials with the given prefix.

The following policy entry empowers the Http Service bundle to perform user authentication:

 
  grant codeBase "${jars}http.jar" {
    permission org.osgi.service.useradmin.UserAdminPermission
      "user.password", "getCredential";
  };
 
 

The permission statement grants the Http Service bundle the permission to validate any password credentials (for authentication purposes), but the bundle is not allowed to change any properties or credentials.

Version:

$Revision: 6381 $

See Also:

Serialized Form

ThreadSafe

Field Summary

private static int	ACTION_ALL All actions
private static int	ACTION_CHANGE_CREDENTIAL
private static int	ACTION_CHANGE_PROPERTY
private static int	ACTION_GET_CREDENTIAL
private int	action_mask The actions mask.
(package private) static int	ACTION_NONE No actions.
private java.lang.String	actions The actions in canonical form.
static java.lang.String	ADMIN The permission name "admin".
static java.lang.String	CHANGE_CREDENTIAL The action string "changeCredential".
static java.lang.String	CHANGE_PROPERTY The action string "changeProperty".
static java.lang.String	GET_CREDENTIAL The action string "getCredential".
(package private) static long	serialVersionUID

Constructor Summary

UserAdminPermission(java.lang.String name, int mask)
Package private constructor used by UserAdminPermissionCollection.

UserAdminPermission(java.lang.String name, java.lang.String actions)
Creates a new UserAdminPermission with the specified name and actions.

Method Summary

boolean	equals(java.lang.Object obj) Checks two UserAdminPermission objects for equality.
java.lang.String	getActions() Returns the canonical string representation of the actions, separated by comma.
(package private) int	getActionsMask() Returns the current action mask.
int	hashCode() Returns the hash code value for this object.
boolean	implies(java.security.Permission p) Checks if this UserAdminPermission object "implies" the specified permission.
private static boolean	match_change(char[] a, int i)
private static boolean	match_credential(char[] a, int i)
private static boolean	match_get(char[] a, int i)
private static boolean	match_property(char[] a, int i)
java.security.PermissionCollection	newPermissionCollection() Returns a new PermissionCollection object for storing UserAdminPermission objects.
private static int	parseActions(java.lang.String actions) Parse action string into action mask.
private void	readObject(java.io.ObjectInputStream s)
private void	setTransients(int mask) Called by constructors and when deserialized.
java.lang.String	toString() Returns a string describing this UserAdminPermission object.
private void	writeObject(java.io.ObjectOutputStream s) writeObject is called to save the state of this object to a stream.

Methods inherited from class java.security.Permission

checkGuard, getName

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

static final long serialVersionUID

See Also:

Constant Field Values

ADMIN

public static final java.lang.String ADMIN

The permission name "admin".

See Also:

Constant Field Values

CHANGE_PROPERTY

public static final java.lang.String CHANGE_PROPERTY

The action string "changeProperty".

See Also:

Constant Field Values

ACTION_CHANGE_PROPERTY

private static final int ACTION_CHANGE_PROPERTY

See Also:

Constant Field Values

CHANGE_CREDENTIAL

public static final java.lang.String CHANGE_CREDENTIAL

The action string "changeCredential".

See Also:

Constant Field Values

ACTION_CHANGE_CREDENTIAL

private static final int ACTION_CHANGE_CREDENTIAL

See Also:

Constant Field Values

GET_CREDENTIAL

public static final java.lang.String GET_CREDENTIAL

The action string "getCredential".

See Also:

Constant Field Values

ACTION_GET_CREDENTIAL

private static final int ACTION_GET_CREDENTIAL

See Also:

Constant Field Values

ACTION_ALL

private static final int ACTION_ALL

All actions

See Also:

Constant Field Values

ACTION_NONE

static final int ACTION_NONE

No actions.

See Also:

Constant Field Values

actions

private volatile java.lang.String actions

The actions in canonical form.

action_mask

private transient int action_mask

The actions mask.

Constructor Detail

UserAdminPermission

public UserAdminPermission(java.lang.String name,
                           java.lang.String actions)

Creates a new UserAdminPermission with the specified name and actions. name is either the reserved string "admin" or the name of a credential or property, and actions contains a comma-separated list of the actions granted on the specified name. Valid actions are changeProperty,changeCredential, and getCredential.

Parameters:

name - the name of this UserAdminPermission

actions - the action string.

Throws:

java.lang.IllegalArgumentException - If name equals "admin" and actions are specified.

UserAdminPermission

UserAdminPermission(java.lang.String name,
                    int mask)

Package private constructor used by UserAdminPermissionCollection.

Parameters:

name - class name

mask - action mask

Method Detail

setTransients

private void setTransients(int mask)

Called by constructors and when deserialized.

Parameters:

mask - action mask

getActionsMask

int getActionsMask()

Returns the current action mask.

Used by the UserAdminPermissionCollection class.

Returns:

Current action mask.

parseActions

private static int parseActions(java.lang.String actions)

Parse action string into action mask.

Parameters:

actions - Action string.

Returns:

action mask.

match_change

private static boolean match_change(char[] a,
                                    int i)

match_get

private static boolean match_get(char[] a,
                                 int i)

match_property

private static boolean match_property(char[] a,
                                      int i)

match_credential

private static boolean match_credential(char[] a,
                                        int i)

implies

public boolean implies(java.security.Permission p)

Checks if this UserAdminPermission object "implies" the specified permission.

More specifically, this method returns true if:

• p is an instanceof UserAdminPermission,
• p 's actions are a proper subset of this object's actions, and
• p 's name is implied by this object's name. For example, "java.*" implies "java.home".

Overrides:

implies in class java.security.BasicPermission

Parameters:

p - the permission to check against.

Returns:

true if the specified permission is implied by this object; false otherwise.

getActions

public java.lang.String getActions()

Returns the canonical string representation of the actions, separated by comma.

Overrides:

getActions in class java.security.BasicPermission

Returns:

the canonical string representation of the actions.

newPermissionCollection

public java.security.PermissionCollection newPermissionCollection()

Returns a new PermissionCollection object for storing UserAdminPermission objects.

Overrides:

newPermissionCollection in class java.security.BasicPermission

Returns:

a new PermissionCollection object suitable for storing UserAdminPermission objects.

equals

public boolean equals(java.lang.Object obj)

Checks two UserAdminPermission objects for equality. Checks that obj is a UserAdminPermission, and has the same name and actions as this object.

Overrides:

equals in class java.security.BasicPermission

Parameters:

obj - the object to be compared for equality with this object.

Returns:

true if obj is a UserAdminPermission object, and has the same name and actions as this UserAdminPermission object.

hashCode

public int hashCode()

Returns the hash code value for this object.

Overrides:

hashCode in class java.security.BasicPermission

Returns:

A hash code value for this object.

writeObject

private void writeObject(java.io.ObjectOutputStream s)
                  throws java.io.IOException

writeObject is called to save the state of this object to a stream. The actions are serialized, and the superclass takes care of the name.

Throws:

java.io.IOException

readObject

private void readObject(java.io.ObjectInputStream s)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

toString

public java.lang.String toString()

Returns a string describing this UserAdminPermission object. This string must be in PermissionInfo encoded format.

Overrides:

toString in class java.security.Permission

Returns:

The PermissionInfo encoded string for this UserAdminPermission object.

See Also:

"org.osgi.service.permissionadmin.PermissionInfo.getEncoded"