    001package org.apache.turbine.services.security;
    002
    003/*
    004 * Licensed to the Apache Software Foundation (ASF) under one
    005 * or more contributor license agreements.  See the NOTICE file
    006 * distributed with this work for additional information
    007 * regarding copyright ownership.  The ASF licenses this file
    008 * to you under the Apache License, Version 2.0 (the
    009 * "License"); you may not use this file except in compliance
    010 * with the License.  You may obtain a copy of the License at
    011 *
    012 *   http://www.apache.org/licenses/LICENSE-2.0
    013 *
    014 * Unless required by applicable law or agreed to in writing,
    015 * software distributed under the License is distributed on an
    016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    017 * KIND, either express or implied.  See the License for the
    018 * specific language governing permissions and limitations
    019 * under the License.
    020 */
    021
    022import java.util.List;
    023
    024import org.apache.commons.configuration.Configuration;
    025import org.apache.fulcrum.security.acl.AccessControlList;
    026import org.apache.fulcrum.security.util.DataBackendException;
    027import org.apache.fulcrum.security.util.EntityExistsException;
    028import org.apache.fulcrum.security.util.PasswordMismatchException;
    029import org.apache.fulcrum.security.util.UnknownEntityException;
    030import org.apache.turbine.om.security.User;
    031import org.apache.turbine.services.InitializationException;
    032
    033/**
    034 * An UserManager performs {@link org.apache.turbine.om.security.User} objects
    035 * related tasks on behalf of the
    036 * {@link org.apache.turbine.services.security.DefaultSecurityService}.
    037 *
    038 * The responsibilities of this class include loading data of an user from the
    039 * storage and putting them into the
    040 * {@link org.apache.turbine.om.security.User} objects, saving those data
    041 * to the permanent storage, and authenticating users.
    042 *
    043 * @author <a href="mailto:Rafal.Krzewski@e-point.pl">Rafal Krzewski</a>
    044 * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
    045 * @version $Id: UserManager.java 1706239 2015-10-01 13:18:35Z tv $
    046 */
    047public interface UserManager
    048{
    049    /**
    050     * Initializes the UserManager
    051     *
    052     * @param conf A Configuration object to init this Manager
    053     *
    054     * @throws InitializationException When something went wrong.
    055     */
    056    void init(Configuration conf)
    057        throws InitializationException;
    058
    059    /**
    060     * Check whether a specified user's account exists.
    061     *
    062     * The login name is used for looking up the account.
    063     *
    064     * @param user The user to be checked.
    065     * @return true if the specified account exists
    066     * @throws DataBackendException if there was an error accessing the data
    067     *         backend.
    068     */
    069    boolean accountExists(User user)
    070            throws DataBackendException;
    071
    072    /**
    073     * Check whether a specified user's account exists.
    074     *
    075     * The login name is used for looking up the account.
    076     *
    077     * @param userName The name of the user to be checked.
    078     * @return true if the specified account exists
    079     * @throws DataBackendException if there was an error accessing the data
    080     *         backend.
    081     */
    082    boolean accountExists(String userName)
    083            throws DataBackendException;
    084
    085    /**
    086     * Retrieve a user from persistent storage using username as the
    087     * key.
    088     *
    089     * @param username the name of the user.
    090     * @return an User object.
    091     * @throws UnknownEntityException if the user's record does not
    092     *         exist in the database.
    093     * @throws DataBackendException if there is a problem accessing the
    094     *         storage.
    095     */
    096    <U extends User> U retrieve(String username)
    097            throws UnknownEntityException, DataBackendException;
    098
    099    /**
    100     * Retrieve a list of users that meet the specified criteria.
    101     *
    102     * As the keys for the criteria, you should use the constants that
    103     * are defined in {@link User} interface, plus the names
    104     * of the custom attributes you added to your user representation
    105     * in the data storage. Use verbatim names of the attributes -
    106     * without table name prefix in case of DB implementation.
    107     *
    108     * @param criteria The criteria of selection.
    109     * @return a List of users meeting the criteria.
    110     * @throws DataBackendException if there is a problem accessing the
    111     *         storage.
    112     */
    113    List<? extends User> retrieveList(Object criteria)
    114        throws DataBackendException;
    115
    116    /**
    117     * Retrieve a user from persistent storage using username as the
    118     * key, and authenticate the user. The implementation may chose
    119     * to authenticate to the server as the user whose data is being
    120     * retrieved.
    121     *
    122     * @param username the name of the user.
    123     * @param password the user supplied password.
    124     * @return an User object.
    125     * @throws PasswordMismatchException if the supplied password was incorrect.
    126     * @throws UnknownEntityException if the user's record does not
    127     *         exist in the database.
    128     * @throws DataBackendException if there is a problem accessing the storage.
    129     */
    130    <U extends User> U retrieve(String username, String password)
    131            throws PasswordMismatchException, UnknownEntityException,
    132            DataBackendException;
    133
    134    /**
    135     * Save an User object to persistent storage. User's record is
    136     * required to exist in the storage.
    137     *
    138     * @param user an User object to store.
    139     * @throws UnknownEntityException if the user's record does not
    140     *         exist in the database.
    141     * @throws DataBackendException if there is a problem accessing the storage.
    142     */
    143    void store(User user)
    144            throws UnknownEntityException, DataBackendException;
    145
    146    /**
    147     * Saves User data when the session is unbound. The user account is required
    148     * to exist in the storage.
    149     *
    150     * LastLogin, AccessCounter, persistent pull tools, and any data stored
    151     * in the permData hashtable that is not mapped to a column will be saved.
    152     *
    153     * @param user the user in the session
    154     *
    155     * @exception UnknownEntityException if the user's account does not
    156     *            exist in the database.
    157     * @exception DataBackendException if there is a problem accessing the
    158     *            storage.
    159     */
    160    void saveOnSessionUnbind(User user)
    161            throws UnknownEntityException, DataBackendException;
    162
    163    /**
    164     * Authenticate an User with the specified password. If authentication
    165     * is successful the method returns nothing. If there are any problems,
    166     * exception was thrown.
    167     *
    168     * @param user an User object to authenticate.
    169     * @param password the user supplied password.
    170     * @throws PasswordMismatchException if the supplied password was incorrect.
    171     * @throws UnknownEntityException if the user's record does not
    172     *         exist in the database.
    173     * @throws DataBackendException if there is a problem accessing the storage.
    174     */
    175    void authenticate(User user, String password)
    176            throws PasswordMismatchException, UnknownEntityException,
    177            DataBackendException;
    178
    179    /**
    180     * Creates new user account with specified attributes.
    181     *
    182     * @param user the object describing account to be created.
    183     * @param initialPassword password for the new user
    184     * @throws DataBackendException if there was an error accessing the data
    185     *         backend.
    186     * @throws EntityExistsException if the user account already exists.
    187     */
    188    void createAccount(User user, String initialPassword)
    189            throws EntityExistsException, DataBackendException;
    190
    191    /**
    192     * Removes an user account from the system.
    193     *
    194     * @param user the object describing the account to be removed.
    195     * @throws DataBackendException if there was an error accessing the data
    196     *         backend.
    197     * @throws UnknownEntityException if the user account is not present.
    198     */
    199    void removeAccount(User user)
    200            throws UnknownEntityException, DataBackendException;
    201
    202    /**
    203     * Change the password for an User.
    204     *
    205     * @param user an User to change password for.
    206     * @param oldPassword the current password suplied by the user.
    207     * @param newPassword the current password requested by the user.
    208     * @throws PasswordMismatchException if the supplied password was incorrect.
    209     * @throws UnknownEntityException if the user's record does not
    210     *         exist in the database.
    211     * @throws DataBackendException if there is a problem accessing the storage.
    212     */
    213    void changePassword(User user, String oldPassword,
    214                        String newPassword)
    215            throws PasswordMismatchException, UnknownEntityException,
    216            DataBackendException;
    217
    218    /**
    219     * Forcibly sets new password for an User.
    220     *
    221     * This is supposed by the administrator to change the forgotten or
    222     * compromised passwords. Certain implementatations of this feature
    223     * would require administrative level access to the authenticating
    224     * server / program.
    225     *
    226     * @param user an User to change password for.
    227     * @param password the new password.
    228     * @throws UnknownEntityException if the user's record does not
    229     *            exist in the database.
    230     * @throws DataBackendException if there is a problem accessing the storage.
    231     */
    232    void forcePassword(User user, String password)
    233            throws UnknownEntityException, DataBackendException;
    234
    235    /**
    236     * Constructs an User object to represent an anonymous user of the
    237     * application.
    238     *
    239     * @return An anonymous Turbine User.
    240     * @throws UnknownEntityException
    241     *             if the anonymous User object couldn't be constructed.
    242     */
    243    <T extends User> T getAnonymousUser() throws UnknownEntityException;
    244
    245    /**
    246     * Checks whether a passed user object matches the anonymous user pattern
    247     * according to the configured user manager
    248     *
    249     * @param u a user object
    250     *
    251     * @return True if this is an anonymous user
    252     *
    253     */
    254    boolean isAnonymousUser(User u);
    255
    256    /**
    257     * Construct a blank User object.
    258     *
    259     * This method calls getUserClass, and then creates a new object using the
    260     * default constructor.
    261     *
    262     * @return an object implementing User interface.
    263     * @throws DataBackendException
    264     *             if the object could not be instantiated.
    265     */
    266    <T extends User> T getUserInstance() throws DataBackendException;
    267
    268    /**
    269     * Construct a blank User object.
    270     *
    271     * This method calls getUserClass, and then creates a new object using the
    272     * default constructor.
    273     *
    274     * @param userName
    275     *            The name of the user.
    276     *
    277     * @return an object implementing User interface.
    278     * @throws DataBackendException
    279     *             if the object could not be instantiated.
    280     */
    281    <T extends User> T getUserInstance(String userName) throws DataBackendException;
    282
    283    /**
    284     * Return a Class object representing the system's chosen implementation of
    285     * of ACL interface for the given user
    286     *
    287     * @param user the user
    288     * @return systems's chosen implementation of ACL interface.
    289     * @throws UnknownEntityException
    290     *             if the implementation of ACL interface could not be
    291     *             determined, or does not exist.
    292     */
    293    <T extends AccessControlList> T getACL(User user) throws UnknownEntityException;
    294}