no.dusken.common.plugin.ldapplugin.auth.DuskenLdapAuthoritiesPopulator.java Source code

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Here is the source code for no.dusken.common.plugin.ldapplugin.auth.DuskenLdapAuthoritiesPopulator.java

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/* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
 *
 * 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 no.dusken.common.plugin.ldapplugin.auth;

import org.springframework.ldap.core.ContextSource;
import org.springframework.ldap.core.DirContextOperations;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.GrantedAuthorityImpl;
import org.springframework.security.ldap.SpringSecurityLdapTemplate;
import org.springframework.security.ldap.userdetails.DefaultLdapAuthoritiesPopulator;

import java.util.HashSet;
import java.util.Set;

/**
 * To get roles out of the dusken ldap mess
 */
public class DuskenLdapAuthoritiesPopulator extends DefaultLdapAuthoritiesPopulator {

    /**
     * Constructor for group search scenarios. <tt>userRoleAttributes</tt> may still be
     * set as a property.
     *
     * @param contextSource   supplies the contexts used to search for user roles.
     * @param groupSearchBase if this is an empty string the search will be performed from the root DN of the
     *                        context factory.
     */
    public DuskenLdapAuthoritiesPopulator(ContextSource contextSource, String groupSearchBase) {
        super(contextSource, groupSearchBase);
    }

    /**
     * This method should be overridden if required to obtain any additional
     * roles for the given user (on top of those obtained from the standard
     * search implemented by this class).
     *
     * @param user     the context representing the user who's roles are required
     * @param username the username representing the user who's roles are required
     * @return the extra roles which will be merged with those returned by the group search
     */
    @Override
    protected Set<GrantedAuthority> getAdditionalRoles(DirContextOperations user, String username) {

        // this is like "employeeNumber: 396"
        String employeeNumberString = user.getStringAttribute("employeeNumber");
        // get the last number
        employeeNumberString = employeeNumberString.replaceFirst("employeeNumber: ", "");
        Long employeeNumber = Long.parseLong(employeeNumberString);

        // I need this:
        SpringSecurityLdapTemplate ldapTemplate = new SpringSecurityLdapTemplate(getContextSource());

        String groupSearchFilter = "memberID=" + employeeNumber;

        //noinspection unchecked
        Set<String> userRoles = ldapTemplate.searchForSingleAttributeValues(getGroupSearchBase(), groupSearchFilter,
                new String[] { user.getDn().toString(), username }, "roleName");
        Set<GrantedAuthority> set = new HashSet<GrantedAuthority>();

        for (String role : userRoles) {
            set.add(new GrantedAuthorityImpl("ROLE_" + role.toUpperCase().replaceAll(" ", "_")));
        }

        return set;
    }
}