py.una.pol.karaku.util.LDAPUtil.java Source code

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Here is the source code for py.una.pol.karaku.util.LDAPUtil.java

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/*-
 * Copyright (c)
 *
 *       2012-2014, Facultad Politcnica, Universidad Nacional de Asuncin.
 *       2012-2014, Facultad de Ciencias Mdicas, Universidad Nacional de Asuncin.
 *       2012-2013, Centro Nacional de Computacin, Universidad Nacional de Asuncin.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */
package py.una.pol.karaku.util;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attributes;
import javax.naming.directory.BasicAttribute;
import javax.naming.directory.BasicAttributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import py.una.pol.karaku.configuration.PropertiesUtil;
import py.una.pol.karaku.exception.KarakuRuntimeException;

/**
 * Clase para realizar operaciones de directorio en LDAP
 * 
 * @author Uriel Gonzalez
 * @author Romina Fernandez
 * 
 */
@Component
public class LDAPUtil {

    private static final String LDAP_SERVER_KEY = "ldap.server.host";

    private static final String LDAP_ADMIN_KEY = "ldap.user";

    private static final String LDAP_DN_KEY = "ldap.DN";

    private static final String LDAP_ADMIN_PASS_KEY = "ldap.user.password";

    /**
     * Usuarios especiales que no deben mostrarse al usuario final.
     * 
     * TODO cambiar a propiedad
     */
    private static final String LDAP_SPECIAL_USER_PREFIX = "sigh_";
    private static final String[] EXCLUDED_USERS = { "cas", "root", "configuracion", "desarrollador", "farmacia",
            "identificacion", "social", "stock", "ws_sigh" };

    @Autowired
    private PropertiesUtil propertiesUtil;

    private DirContext createInitialDirContext() {

        Map<Object, String> env = new HashMap<Object, String>();
        env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
        env.put(Context.PROVIDER_URL, propertiesUtil.get(LDAP_SERVER_KEY) + "/" + propertiesUtil.get(LDAP_DN_KEY));
        env.put(Context.SECURITY_PRINCIPAL, propertiesUtil.get(LDAP_ADMIN_KEY));
        env.put(Context.SECURITY_CREDENTIALS, propertiesUtil.get(LDAP_ADMIN_PASS_KEY));

        try {
            return new InitialDirContext(new Hashtable<Object, String>(env));

        } catch (NamingException e) {
            throw new KarakuRuntimeException(e.getMessage(), e);
        }

    }

    /**
     * Recupera los usuarios de LDAP
     * 
     * @return Una lista con los usuarios de LDAP
     */
    public List<User> getUsers() {

        List<User> users = new ArrayList<User>();

        try {
            DirContext ctx = createInitialDirContext();

            Attributes matchAttrs = new BasicAttributes(true);
            matchAttrs.put(new BasicAttribute("uid"));

            NamingEnumeration<SearchResult> answer = ctx.search("ou=users", matchAttrs);

            while (answer.hasMore()) {
                SearchResult sr = answer.next();
                String uid = sr.getName().substring(4);
                // No se retornan los usuarios especiales
                if (!uid.startsWith(LDAP_SPECIAL_USER_PREFIX) && !ListHelper.contains(EXCLUDED_USERS, uid)) {
                    User user = new User();
                    user.setUid(uid);
                    Attributes atributos = sr.getAttributes();
                    String cn = atributos.get("cn").toString().substring(4);
                    user.setCn(cn);
                    users.add(user);
                }
            }

        } catch (NamingException e) {
            throw new KarakuRuntimeException(e.getMessage(), e);
        }

        return users;

    }

    public static class User {

        private String uid;

        private String cn;

        public void setUid(String uid) {

            this.uid = uid;
        }

        public String getUid() {

            return this.uid;
        }

        public void setCn(String cn) {

            this.cn = cn;
        }

        public String getCn() {

            return this.cn;
        }

    }
}