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package com.sun.enterprise.security;
import java.util.*;
import com.sun.enterprise.security.auth.realm.*;
import com.sun.enterprise.security.util.IASSecurityException;
import com.sun.enterprise.util.i18n.StringManager;
/**
* Parent class for iAS Realm classes.
*
* This class provides default implementation for most of the abstract
* methods in com.sun.enterprise.security.auth.realm.Realm. Since most
* of these abstract methods are not supported by Realms there is
* no need for the subclasses to implement them. The default implementations
* provided here generally throw an exception if invoked.
*
* @author Harpreet Singh
*/
public abstract class BaseRealm extends Realm
{
public static final String JAAS_CONTEXT_PARAM="jaas-context";
protected static final StringManager sm =
StringManager.getManager(IASRealm.class);
/**
* Returns an AuthenticationHandler object which can be used to
* authenticate within this realm.
*
*
This method return null always, since AuthenticationHandlers
* are generally not supported by iAS realms. Subclass can override
* if necessary.
*
* @return An AuthenticationHandler object for this realm (always null)
*
*/
public AuthenticationHandler getAuthenticationHandler()
{
_logger.warning("iasrealm.noauth");
return null;
}
/**
* Returns names of all the users in this particular realm.
*
*
This method always throws a BadRealmException since by default
* this operation is not supported. Subclasses which support this
* method can override.
*
* @return enumeration of user names (strings)
* @exception com.sun.enterprise.security.auth.realm.BadRealmException if realm data structures are bad
*
*/
public Enumeration getUserNames() throws BadRealmException
{
String msg = sm.getString("iasrealm.notsupported");
throw new BadRealmException(msg);
}
/**
* Returns the information recorded about a particular named user.
*
*
This method always throws a BadRealmException since by default
* this operation is not supported. Subclasses which support this
* method can override.
*
* @param name name of the user whose information is desired
* @return the user object
* @exception com.sun.enterprise.security.auth.realm.NoSuchUserException if the user doesn't exist
* @exception com.sun.enterprise.security.auth.realm.BadRealmException if realm data structures are bad
*
*/
public User getUser(String name)
throws NoSuchUserException, BadRealmException
{
String msg = sm.getString("iasrealm.notsupported");
throw new BadRealmException(msg);
}
/**
* Returns names of all the groups in this particular realm.
*
*
This method always throws a BadRealmException since by default
* this operation is not supported. Subclasses which support this
* method can override.
*
* @return enumeration of group names (strings)
* @exception com.sun.enterprise.security.auth.realm.BadRealmException if realm data structures are bad
*
*/
public Enumeration getGroupNames()
throws BadRealmException
{
String msg = sm.getString("iasrealm.notsupported");
throw new BadRealmException(msg);
}
/**
* Refreshes the realm data so that new users/groups are visible.
*
*
This method always throws a BadRealmException since by default
* this operation is not supported. Subclasses which support this
* method can override.
*
* @exception com.sun.enterprise.security.auth.realm.BadRealmException if realm data structures are bad
*
*/
public void refresh() throws BadRealmException
{
String msg = sm.getString("iasrealm.notsupported");
throw new BadRealmException(msg);
}
/**
* Adds new user to file realm. User cannot exist already.
*
* @param name User name.
* @param password Cleartext password for the user.
* @param groupList List of groups to which user belongs.
* @throws BadRealmException If there are problems adding user.
*
*/
public void addUser(String name, char[] password, String[] groupList)
throws BadRealmException, IASSecurityException {
String msg = sm.getString("iasrealm.notsupported");
throw new BadRealmException(msg);
}
/**
* Adds new user to file realm. User cannot exist already.
*
* Deprecated - User of the overloaded method with char[] password is encouraged
*/
@Deprecated
public void addUser(String name, String password, String[] groupList)
throws BadRealmException, IASSecurityException {
addUser(name, password.toCharArray(), groupList);
}
/**
* Remove user from file realm. User must exist.
*
* @param name User name.
* @throws NoSuchUserException If user does not exist.
*
*/
public void removeUser(String name)
throws NoSuchUserException, BadRealmException {
String msg = sm.getString("iasrealm.notsupported");
throw new BadRealmException(msg);
}
/**
* Update data for an existing user. User must exist.
* Deprecated - User of the overloaded method with char[] password is encouraged
*
*/
@Deprecated
public void updateUser(String name, String newName, String password,
String[] groups)
throws NoSuchUserException, BadRealmException,
IASSecurityException {
updateUser(name, newName, (password ==null)? null : password.toCharArray(), groups);
}
/**
* Update data for an existing user. User must exist.
*
* @param name Current name of the user to update.
* @param newName New name to give this user. It can be the same as
* the original name. Otherwise it must be a new user name which
* does not already exist as a user.
* @param password Cleartext password for the user. If non-null the user
* password is changed to this value. If null, the original password
* is retained.
* @param groupList List of groups to which user belongs.
* @throws BadRealmException If there are problems adding user.
* @throws NoSuchUserException If user does not exist.
*
*/
public void updateUser(String name, String newName, char[] password,
String[] groups)
throws NoSuchUserException, BadRealmException,
IASSecurityException {
String msg = sm.getString("iasrealm.notsupported");
throw new BadRealmException(msg);
}
/**
* @return true if the realm implementation support User Management (add,remove,update user)
*/
public boolean supportsUserManagement() {
//false by default.
return false;
}
/**
* Persist the realm data to permanent storage
* @throws com.sun.enterprise.security.auth.realm.BadRealmException
*/
public void persist() throws BadRealmException {
//NOOP for realms that do not support UserManagement
}
}