org.osgi.service.useradmin

Class UserAdminPermission

java.lang.Object

java.security.Permission

java.security.BasicPermission

org.osgi.service.useradmin.UserAdminPermission

All Implemented Interfaces:

Serializable, Guard

public final class UserAdminPermission
extends 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.

See Also:

Serialized Form

"ThreadSafe"

Field Summary

Fields

Modifier and Type	Field and Description
static String	ADMIN The permission name "admin".
static String	CHANGE_CREDENTIAL The action string "changeCredential".
static String	CHANGE_PROPERTY The action string "changeProperty".
static String	GET_CREDENTIAL The action string "getCredential".

Constructor Summary

Constructors

Constructor and Description
UserAdminPermission(String name, String actions) Creates a new UserAdminPermission with the specified name and actions.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj) Checks two UserAdminPermission objects for equality.
String	getActions() Returns the canonical string representation of the actions, separated by comma.
int	hashCode() Returns the hash code value for this object.
boolean	implies(Permission p) Checks if this UserAdminPermission object "implies" the specified permission.
PermissionCollection	newPermissionCollection() Returns a new PermissionCollection object for storing UserAdminPermission objects.
String	toString() Returns a string describing this UserAdminPermission object.

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

ADMIN

public static final String ADMIN

The permission name "admin".

See Also:

Constant Field Values

CHANGE_PROPERTY

public static final String CHANGE_PROPERTY

The action string "changeProperty".

See Also:

Constant Field Values

CHANGE_CREDENTIAL

public static final String CHANGE_CREDENTIAL

The action string "changeCredential".

See Also:

Constant Field Values

GET_CREDENTIAL

public static final String GET_CREDENTIAL

The action string "getCredential".

See Also:

Constant Field Values

Constructor Detail

UserAdminPermission

public UserAdminPermission(String name,
                   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:

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

Method Detail

implies

public boolean implies(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 BasicPermission

Parameters:

p - the permission to check against.

Returns:

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

getActions

public String getActions()

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

Overrides:

getActions in class BasicPermission

Returns:

the canonical string representation of the actions.

newPermissionCollection

public PermissionCollection newPermissionCollection()

Returns a new PermissionCollection object for storing UserAdminPermission objects.

Overrides:

newPermissionCollection in class BasicPermission

Returns:

a new PermissionCollection object suitable for storing UserAdminPermission objects.

equals

public boolean equals(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 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 BasicPermission

Returns:

A hash code value for this object.

toString

public String toString()

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

Overrides:

toString in class Permission

Returns:

The PermissionInfo encoded string for this UserAdminPermission object.

See Also:

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