ldapgroupmanagement.java

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/*
 * Copyright 2000-2001,2004 The Apache Software Foundation.
 * 
 * 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.
 */

package org.apache.jetspeed.services.security.ldap;

import java.util.Enumeration;
import java.util.Iterator;
import java.util.StringTokenizer;
import java.util.Vector;
import java.util.HashMap;
import javax.naming.directory.BasicAttributes;
import javax.servlet.ServletConfig;
import org.apache.jetspeed.om.profile.Profile;
import org.apache.jetspeed.om.profile.ProfileException;
import org.apache.jetspeed.om.security.Group;
import org.apache.jetspeed.om.security.UserNamePrincipal;
import org.apache.jetspeed.om.security.ldap.LDAPGroup;
import org.apache.jetspeed.om.security.ldap.LDAPRole;
import org.apache.jetspeed.om.security.ldap.LDAPUser;
import org.apache.jetspeed.services.JetspeedLDAP;
import org.apache.jetspeed.services.JetspeedSecurity;
import org.apache.jetspeed.services.Profiler;
import org.apache.jetspeed.services.PsmlManager;
import org.apache.jetspeed.services.ldap.LDAPURL;
import org.apache.jetspeed.services.rundata.JetspeedRunData;
import org.apache.jetspeed.services.rundata.JetspeedRunDataService;
import org.apache.jetspeed.services.security.GroupException;
import org.apache.jetspeed.services.security.GroupManagement;
import org.apache.jetspeed.services.security.JetspeedSecurityException;
import org.apache.jetspeed.services.security.JetspeedSecurityService;
import org.apache.jetspeed.services.security.UnknownUserException;
import org.apache.turbine.services.InitializationException;
import org.apache.turbine.services.TurbineBaseService;
import org.apache.turbine.services.TurbineServices;
import org.apache.turbine.services.resources.ResourceService;
import org.apache.turbine.services.rundata.RunDataService;

/**
 *
 * @author <a href="mailto:[e-mail]">Ender KILICOGLU</a>
 * @author <a href="mailto:[e-mail]">Sami Leino</a>
 *
 * @version $Id: LDAPGroupManagement.java,v 1.8 2004/02/23 03:52:33 jford Exp $
 *
 */
public class LDAPGroupManagement extends TurbineBaseService
                                   implements GroupManagement
{
	// Constants
    private final static String CONFIG_DEFAULT_ROLE     = "role.default";
    private final static String CASCADE_DELETE          = "programmatic.cascade.delete";
    private final static String DEFAULT_DEFAULT_ROLE   = "user";
    private final static boolean DEFAULT_CASCADE_DELETE = true;
    private final static String[] ATTRS                 = { "ou", "uid", "groupname" };

	// Instance variables
    private JetspeedRunDataService runDataService       = null;
    private boolean cascadeDelete                       = false;
    private String defaultRole                          = null;

    ///////////////////////////////////////////////////////////////////////////
    // Group Management Interfaces
    ///////////////////////////////////////////////////////////////////////////

    /**
     * Retrieves all <code>Group</code>s for a given username principal.
     *
     * The security service may optionally check the current user context
     * to determine if the requestor has permission to perform this action.
     *
     * @param username a user principal identity to be retrieved.
     * @return Iterator over all groups associated to the user principal.
     * @exception GroupException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public Iterator getGroups(String username)
        throws JetspeedSecurityException
    {
        Vector groups = new Vector();
        StringTokenizer st;
        LDAPUser user;

        try
        {
            user = (LDAPUser)JetspeedSecurity.getUser(new UserNamePrincipal(username));
        }
        catch(JetspeedSecurityException e)
        {
            throw new GroupException("Failed to Retrieve User: ", e);
        }

        try
        {
            for (Enumeration enum = user.getGroupRoles().elements() ;enum.hasMoreElements() ;)
            {
                st = new StringTokenizer((String)enum.nextElement(),",");
                groups.add(new LDAPGroup(st.nextToken(), false));
            }
        }
        catch(Exception e)
        {
            throw new GroupException("Failed to retrieve groups ", e);
        }

        return groups.iterator();
    }

    /**
     * Retrieves all <code>Group</code>s.
     *
     * The security service may optionally check the current user context
     * to determine if the requestor has permission to perform this action.
     *
     * @return Iterator over all groups.
     * @exception GroupException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public Iterator getGroups()
        throws JetspeedSecurityException
    {
        BasicAttributes attr= new BasicAttributes();
        Vector groups = new Vector();
        Vector groupurls;

        try
        {
            groupurls = JetspeedLDAP.search(JetspeedLDAP.buildURL("ou=groups"),
                                        "(objectclass=jetspeedgroup)", ATTRS, true);
            if (groupurls.size() > 0)
            {
                for (Enumeration enum = groupurls.elements();enum.hasMoreElements() ;)
                {
                    groups.add(new LDAPGroup((LDAPURL) (((Vector)enum.nextElement()).firstElement())));
                }
            }
            else
            {
                throw new UnknownUserException("No groups");
            }
        }
        catch(Exception e)
        {
            throw new GroupException("Failed to retrieve groups ", e);
        }

        return groups.iterator();
    }

    /**
     * Adds a <code>Group</code> into permanent storage.
     *
     * The security service can throw a <code>NotUniqueEntityException</code> when the public
     * credentials fail to meet the security provider-specific unique constraints.
     * The security service may optionally check the current user context
     * to determine if the requestor has permission to perform this action.
     *
     * @exception GroupException when the security provider has a general failure.
     * @exception NotUniqueEntityException when the public credentials fail to meet
     *                                   the security provider-specific unique constraints.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     *
     */
    public void addGroup(Group group)
        throws JetspeedSecurityException
    {
        LDAPGroup ldapGroup = null;

        if(groupExists(group.getName()))
        {
            throw new GroupException("The group '" +
                group.getName() + "' already exists");
        }
        try
        {
            ldapGroup = new LDAPGroup(group.getName(), true);
            ldapGroup.update(true);
        }
        catch(Exception e)
        {
            throw new GroupException("Failed to create group '" +
                group.getName() + "'", e);
        }

        try
        {
            addDefaultGroupPSML(ldapGroup);
        }
        catch (Exception e)
        {
            try
            {
                removeGroup(ldapGroup.getName());
            }
            catch (Exception e2)
            {
            }
            throw new GroupException("failed to add default PSML for Group resource", e);
        }

    }
    protected void addDefaultGroupPSML(Group group)
        throws GroupException
    {
        try
        {
            JetspeedRunDataService runDataService =
               (JetspeedRunDataService)TurbineServices.getInstance()
                   .getService(RunDataService.SERVICE_NAME);

            JetspeedRunData rundata = runDataService.getCurrentRunData();
            Profile profile = Profiler.createProfile();
            profile.setGroup(group);
            profile.setMediaType("html");
            Profiler.createProfile(rundata, profile);
        }
        catch (ProfileException e)
        {
            try
            {
                removeGroup(group.getName());
            }
            catch(Exception e2)
            {
            }
            throw new GroupException("Failed to create Group PSML", e);
        }
    }

    /**
     * Saves a <code>Group</code> into permanent storage.
     *
     * The security service can throw a <code>NotUniqueEntityException</code> when the public
     * credentials fail to meet the security provider-specific unique constraints.
     * The security service may optionally check the current user context
     * to determine if the requestor has permission to perform this action.
     *
     * @exception GroupException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public void saveGroup(Group group)
        throws JetspeedSecurityException
    {
        if(!groupExists(group.getName()))
        {
            throw new GroupException("The group '" +
                group.getName() + "' doesn't exists");
        }

        try
        {
        }
        catch(Exception e)
        {
            throw new GroupException("Failed to create group '" +
                group.getName() + "'", e);
        }
    }

    /**
     * Removes a <code>Group</code> from the permanent store.
     *
     * The security service may optionally check the current user context
     * to determine if the requestor has permission to perform this action.
     *
     * @param groupname the principal identity of the group to be retrieved.
     * @exception GroupException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public void removeGroup(String groupname)
        throws JetspeedSecurityException
    {
        try
        {
            LDAPGroup group = new LDAPGroup(groupname, false);
            JetspeedLDAP.deleteEntry(group.getldapurl());

            if(cascadeDelete)
            {
            }

            PsmlManager.removeGroupDocuments(group);
        }
        catch(Exception e)
        {
            throw new GroupException("Failed to remove group '" +
                groupname + "'", e);
        }
    }

    /**
     * Join a user to a group.
     *
     * The security service may optionally check the current user context
     * to determine if the requestor has permission to perform this action.
     *
     * @exception GroupException when the security provider has a general failure retrieving users.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public void joinGroup(String username, String groupname)
        throws JetspeedSecurityException
    {
        LDAPUser user;
        try