ldaprolemanagement.java

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/*
 * Copyright 2000-2004 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 javax.servlet.ServletConfig;

import org.apache.jetspeed.om.profile.Profile;
import org.apache.jetspeed.om.profile.ProfileException;
import org.apache.jetspeed.om.security.Role;
import org.apache.jetspeed.om.security.UserNamePrincipal;
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.CachedAcl;
import org.apache.jetspeed.services.security.JetspeedSecurityCache;
import org.apache.jetspeed.services.security.JetspeedSecurityException;
import org.apache.jetspeed.services.security.JetspeedSecurityService;
import org.apache.jetspeed.services.security.RoleException;
import org.apache.jetspeed.services.security.RoleManagement;
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: LDAPRoleManagement.java,v 1.9 2004/02/23 03:52:33 jford Exp $
 *
 */
public class LDAPRoleManagement extends TurbineBaseService
                                   implements RoleManagement
{
	// Constants
    private final static String CASCADE_DELETE          = "programmatic.cascade.delete";
    private final static String CACHING_ENABLE          = "caching.enable";
    private final static boolean DEFAULT_CASCADE_DELETE = true;
    private final static boolean DEFAULT_CACHING_ENABLE = true;
    private final static String[] ATTRS                 = { "ou", "uid", "rolename", "rolepermissions" };

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

    ///////////////////////////////////////////////////////////////////////////
    // Role Management Interfaces
    ///////////////////////////////////////////////////////////////////////////

    /**
     * Retrieves all <code>Role</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 roles associated to the user principal.
     * @exception RoleException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public Iterator getRoles(String username)
        throws JetspeedSecurityException
    {
        StringTokenizer st;
        LDAPUser user;
        try
        {
            if (cachingEnable)
            {
                Iterator result = JetspeedSecurityCache.getRoles(username);
                if (null != result)
                {
                    return result;
                }
            }
            user = (LDAPUser)JetspeedSecurity.getUser(new UserNamePrincipal(username));
        }
        catch(JetspeedSecurityException e)
        {
            throw new RoleException("Failed to Retrieve User: ", e);
        }

        Vector roles= new Vector();

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

    }
    /**
     * Retrieves all <code>Role</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 roles.
     * @exception RoleException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public Iterator getRoles()
        throws JetspeedSecurityException
    {
        Vector roles = new Vector();
        Vector roleurls;

        try
        {
            roleurls = JetspeedLDAP.search(JetspeedLDAP.buildURL("ou=roles"),"(objectclass=jetspeedrole)", ATTRS, true);
            if (roleurls.size() > 0)
            {
                for (Enumeration enum = roleurls.elements(); enum.hasMoreElements() ;)
                {
                    roles.add(new LDAPRole((LDAPURL) (((Vector)enum.nextElement()).firstElement())));
                }
            }
            else
            {
                throw new UnknownUserException("No role ");
            }
        }
        catch(Exception e)
        {
            throw new RoleException("Failed to retrieve roles ", e);
        }
        return roles.iterator();

    }
    /**
     * Adds a <code>Role</code> into permanent storage.
     *
     * The security service may optionally check the current user context
     * to determine if the requestor has permission to perform this action.
     *
     * @exception RoleException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public void addRole(Role role)
        throws JetspeedSecurityException
    {
    	LDAPRole ldapRole = null;

        if(roleExists(role.getName()))
        {
            throw new RoleException("The role '" +
                role.getName() + "' already exists");
        }

        try
        {
            ldapRole = new LDAPRole(role.getName(), true);
            ldapRole.update(true);
        }
        catch(Exception e)
        {
            throw new RoleException("Failed to create role '" +
                role.getName() + "'", e);
        }

        if (cachingEnable)
        {
            JetspeedSecurityCache.addRole(ldapRole);
        }

        try
        {
            addDefaultRolePSML(ldapRole);
        }
        catch (Exception e)
        {
            try
            {
                removeRole(ldapRole.getName());
            }
            catch (Exception e2)
            {
            }
            throw new RoleException("failed to add default PSML for Role resource", e);
        }
    }

    protected void addDefaultRolePSML(Role role)
        throws RoleException
    {
        try
        {
            JetspeedRunDataService runDataService =
               (JetspeedRunDataService)TurbineServices.getInstance()
                   .getService(RunDataService.SERVICE_NAME);
            JetspeedRunData rundata = runDataService.getCurrentRunData();
            Profile profile = Profiler.createProfile();
            profile.setRole(role);
            profile.setMediaType("html");
            Profiler.createProfile(rundata, profile);
        }
        catch (ProfileException e)
        {
            try
            {
                removeRole(role.getName());
            }
            catch(Exception e2)
            {
e.printStackTrace();
            }
            throw new RoleException("Failed to create Role PSML", e);
        }
    }

    /**
     * Saves a <code>Role</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 RoleException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege
     */
    public void saveRole(Role role)
        throws JetspeedSecurityException
    {
        if(!roleExists(role.getName()))
        {
            throw new RoleException("The role '" +
                role.getName() + "' doesn't exists");
        }

        try
        {

        }
        catch(Exception e)
        {
            throw new RoleException("Failed to create role '" +
                role.getName() + "'", e);
        }

    }
    /**
     * Removes a <code>Role</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 roleName the principal identity of the role to be retrieved.
     * @exception RoleException when the security provider has a general failure.
     * @exception InsufficientPrivilegeException when the requestor is denied due to insufficient privilege