001: /*
002: * $Header: /export/home/cvsroot/MyPersonalizerRepository/MyPersonalizer/Subsystems/Portal/Sources/es/udc/mypersonalizer/portal/model/encryption/PasswordManagerSingleton.java,v 1.1.1.1 2004/03/25 12:08:40 fbellas Exp $
003: * $Revision: 1.1.1.1 $
004: * $Date: 2004/03/25 12:08:40 $
005: *
006: * =============================================================================
007: *
008: * Copyright (c) 2003, The MyPersonalizer Development Group
009: * (http://www.tic.udc.es/~fbellas/mypersonalizer/index.html) at
010: * University Of A Coruna
011: * All rights reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions are met:
015: *
016: * - Redistributions of source code must retain the above copyright notice,
017: * this list of conditions and the following disclaimer.
018: *
019: * - Redistributions in binary form must reproduce the above copyright notice,
020: * this list of conditions and the following disclaimer in the documentation
021: * and/or other materials provided with the distribution.
022: *
023: * - Neither the name of the University Of A Coruna nor the names of its
024: * contributors may be used to endorse or promote products derived from
025: * this software without specific prior written permission.
026: *
027: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
028: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
029: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
030: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
031: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
032: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
033: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
034: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
035: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
036: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
037: * POSSIBILITY OF SUCH DAMAGE.
038: *
039: */
040:
041: package es.udc.mypersonalizer.portal.model.encryption;
042:
043: import es.udc.mypersonalizer.kernel.log.Log;
044: import es.udc.mypersonalizer.kernel.log.LogManager;
045: import es.udc.mypersonalizer.kernel.log.LogNamingConventions;
046: import es.udc.mypersonalizer.portal.config.PasswordManagerConfig;
047: import es.udc.mypersonalizer.portal.config.PortalConfig;
048: import es.udc.mypersonalizer.portal.config.PortalConfigManager;
049:
050: /**
051: * This class provides a single point for all the classes of the application
052: * to access the encryption algorithm used to encrypt passwords.<p>
053: * The concrete implementation of this encryption algorithms must be specified
054: * in the configuration parameters.
055: *
056: * @author Daniel Fernandez
057: * @since 1.0
058: */
059: public abstract class PasswordManagerSingleton {
060:
061: /**
062: * The singleton object containing the specific implementation
063: */
064: private static PasswordManagerSingleton instance;
065:
066: /*
067: * Static block. This class reades here the configuration parameters
068: * and initializes its singleton object to the class specified there.
069: */
070: static {
071:
072: try {
073: PortalConfig portalConfig = PortalConfigManager.getConfig();
074:
075: PasswordManagerConfig passwordManagerConfig = portalConfig
076: .getPortalModelConfig().getPasswordManagerConfig();
077:
078: String className = passwordManagerConfig.getClassName();
079:
080: Class singletonClass = Class.forName(className);
081: instance = (PasswordManagerSingleton) singletonClass
082: .newInstance();
083:
084: } catch (Exception e) {
085:
086: Log mypersonalizerLog = LogManager
087: .getLog(LogNamingConventions.MYPERSONALIZER);
088: mypersonalizerLog.write(
089: "Could not initialize configuration for "
090: + "PasswordManagerSingleton", e,
091: PasswordManagerSingleton.class);
092:
093: }
094:
095: }
096:
097: /**
098: * Returns the singleton object instance with the PasswordManagerSingleton
099: * implementation to use.
100: *
101: * @return a PasswordManagerSingleton with the concrete implementation
102: */
103: public static PasswordManagerSingleton getInstance() {
104: return instance;
105: }
106:
107: /**
108: * Receives a non-encrypted password and prepares it to be stored
109: * by encrypting it the way defined by the configuration parameters
110: *
111: * @return a String with the encrypted password
112: * @param typedNewPassword the password we want to encrypt
113: */
114: public abstract String getPasswordToStore(String typedNewPassword);
115:
116: }
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