Java tutorial
/* * ### * Phresco Service Implemenation * * Copyright (C) 1999 - 2012 Photon Infotech Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ### */ /******************************************************************************* * Copyright (c) 2011 Photon. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Photon Public License v1.0 * which accompanies this distribution, and is available at * http://www.photon.in/legal/ppl-v10.html * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Contributors: * Photon - initial API and implementation ******************************************************************************/ package com.photon.phresco.ldap.impl; import java.util.ArrayList; import java.util.List; import java.util.Properties; import javax.naming.Context; import javax.naming.NamingEnumeration; import javax.naming.NamingException; import javax.naming.directory.Attribute; import javax.naming.directory.Attributes; import javax.naming.directory.DirContext; import javax.naming.directory.InitialDirContext; import javax.naming.directory.SearchControls; import javax.naming.directory.SearchResult; import org.apache.commons.codec.binary.Base64; import org.apache.log4j.Logger; import com.photon.phresco.commons.model.User; import com.photon.phresco.exception.PhrescoException; import com.photon.phresco.ldap.LDAPConstants; import com.photon.phresco.ldap.api.LDAPManager; import com.photon.phresco.ldap.model.LDAPConfiguration; import com.photon.phresco.util.Constants; import com.photon.phresco.util.Credentials; public class LDAPManagerImpl implements LDAPManager { private static final Logger S_LOGGER = Logger.getLogger(LDAPManagerImpl.class); private static Boolean isDebugEnabled = S_LOGGER.isDebugEnabled(); private LDAPConfiguration ldapConfig; public LDAPManagerImpl(Properties props) throws PhrescoException { ldapConfig = new LDAPConfiguration(props); } @Override public User authenticate(Credentials credentials) throws PhrescoException { if (isDebugEnabled) { S_LOGGER.debug("Entering Method LDAPManagerImpl.authenticate(Credentials credentials)"); } String userName = credentials.getUsername(); String passwordEncoded = credentials.getPassword(); byte[] decodedBytes = Base64.decodeBase64(passwordEncoded); String password = new String(decodedBytes); Properties env = new Properties(); env.put(Context.INITIAL_CONTEXT_FACTORY, ldapConfig.getLdapContextFactory()); env.put(Context.PROVIDER_URL, ldapConfig.getLdapUrl()); env.put(Context.SECURITY_PRINCIPAL, getUserPrincipal(userName)); env.put(Context.SECURITY_CREDENTIALS, password); DirContext dc = null; try { dc = new InitialDirContext(env); if (isDebugEnabled) { S_LOGGER.debug("authenticate() Login Success for " + userName); } return getUser(credentials, dc); } catch (Exception e) { e.printStackTrace(); if (isDebugEnabled) { S_LOGGER.debug("authenticate() Login Failed for " + userName); } return new User(); } finally { try { if (dc != null) { dc.close(); } } catch (NamingException e) { throw new PhrescoException(e); } } } private String getUserPrincipal(String userName) { if (isDebugEnabled) { S_LOGGER.debug("Entering Method LDAPManagerImpl.getUserPrincipal(String userName)"); } StringBuffer userPrincipal = new StringBuffer(); userPrincipal.append(ldapConfig.getLdapLoginAttribute()); userPrincipal.append(Constants.STR_EQUALS); userPrincipal.append(userName.trim()); userPrincipal.append(Constants.STR_COMMA); userPrincipal.append(ldapConfig.getLdapBaseDn()); return userPrincipal.toString(); } private User getUser(Credentials credentials, DirContext ctx) throws PhrescoException { if (isDebugEnabled) { S_LOGGER.debug("Entering Method LDAPManagerImpl.getUserInfo(String userName, DirContext ctx)"); } User user = new User(); try { String userName = credentials.getUsername(); SearchControls constraints = new SearchControls(); constraints.setSearchScope(SearchControls.SUBTREE_SCOPE); String[] attrIDs = { "*" }; constraints.setReturningAttributes(attrIDs); NamingEnumeration<SearchResult> ne = ctx.search(ldapConfig.getLdapBaseDn(), ldapConfig.getLdapLoginAttribute() + Constants.STR_EQUALS + userName, constraints); if (ne.hasMore()) { Attributes attrs = ne.next().getAttributes(); user.setName(userName); // userInfo.setCredentials(credentials); user.setDisplayName(getDisplayName(attrs)); user.setEmail(getMailId(attrs)); user.setPhrescoEnabled(isPhrescoEnabled(attrs)); // userInfo.setCustomerNames(getCustomerNames(attrs)); } } catch (Exception e) { throw new PhrescoException(e); } return user; } private List<String> getCustomerNames(Attributes attrs) throws NamingException { if (isDebugEnabled) { S_LOGGER.debug("Entering Method LDAPManagerImpl.getCustomerName(Attributes attrs"); } List<String> customerNames = new ArrayList<String>(); Attribute attribute = attrs.get(ldapConfig.getCustomerNameAttribute()); if (attribute != null) { NamingEnumeration<?> all = attribute.getAll(); while (all.hasMoreElements()) { customerNames.add((String) all.nextElement()); } } return customerNames; } private boolean isPhrescoEnabled(Attributes attrs) throws NamingException { if (isDebugEnabled) { S_LOGGER.debug("Entering Method LDAPManagerImpl.isPhrescoEnabled(Attributes attrs"); } String phrescoEnabled = "false"; Attribute attribute = attrs.get(ldapConfig.getPhrescoEnabledAttribute()); if (attribute != null) { phrescoEnabled = (String) attribute.get(); } else { phrescoEnabled = "true"; } return Boolean.parseBoolean(phrescoEnabled); } private String getDisplayName(Attributes attrs) throws NamingException { if (isDebugEnabled) { S_LOGGER.debug("Entering Method LDAPManagerImpl.getDisplayName(Attributes attrs)"); } String displayName = null; Attribute attribute = attrs.get(ldapConfig.getDisplayNameAttribute()); if (attribute != null) { displayName = (String) attribute.get(); } return displayName; } private String getMailId(Attributes attrs) throws NamingException { if (isDebugEnabled) { S_LOGGER.debug("Entering Method LDAPManagerImpl.getMailId(Attributes attrs"); } String mailId = null; Attribute attribute = attrs.get(ldapConfig.getMailIdAttribute()); if (attribute != null) { mailId = (String) attribute.get(); } return mailId; } }