Chapter 201. LDAP Component

ldap:ldapServerBean[?options]

The ldapServerBean portion of the URI refers to a DirContext bean in the registry. The LDAP component only supports producer endpoints, which means that an ldap URI cannot appear in the from at the start of a route.

You can append query options to the URI in the following format, ?option=value&option=value&…​

The LDAP component has no options.

The LDAP endpoint is configured using URI syntax:

ldap:dirContextName

with the following path and query parameters:

The result is returned in the Out body as a ArrayList<javax.naming.directory.SearchResult> object.

The URI, ldap:ldapserver, references a Spring bean with the ID, ldapserver. The ldapserver bean may be defined as follows:

<bean id="ldapserver" class="javax.naming.directory.InitialDirContext" scope="prototype">
  <constructor-arg>
    <props>
      <prop key="java.naming.factory.initial">com.sun.jndi.ldap.LdapCtxFactory</prop>
      <prop key="java.naming.provider.url">ldap://localhost:10389</prop>
      <prop key="java.naming.security.authentication">none</prop>
    </props>
  </constructor-arg>
</bean>

The preceding example declares a regular Sun based LDAP DirContext that connects anonymously to a locally hosted LDAP server.

Following on from the Spring configuration above, the code sample below sends an LDAP request to filter search a group for a member. The Common Name is then extracted from the response.

ProducerTemplate<Exchange> template = exchange
  .getContext().createProducerTemplate();

Collection<?> results = (Collection<?>) (template
  .sendBody(
    "ldap:ldapserver?base=ou=mygroup,ou=groups,ou=system",
    "(member=uid=huntc,ou=users,ou=system)"));

if (results.size() > 0) {
  // Extract what we need from the device's profile

  Iterator<?> resultIter = results.iterator();
  SearchResult searchResult = (SearchResult) resultIter
      .next();
  Attributes attributes = searchResult
      .getAttributes();
  Attribute deviceCNAttr = attributes.get("cn");
  String deviceCN = (String) deviceCNAttr.get();

  ...

If no specific filter is required - for example, you just need to look up a single entry - specify a wildcard filter expression. For example, if the LDAP entry has a Common Name, use a filter expression like:

(cn=*)

Properties props = new Properties();
props.setProperty(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
props.setProperty(Context.PROVIDER_URL, "ldap://localhost:389");
props.setProperty(Context.URL_PKG_PREFIXES, "com.sun.jndi.url");
props.setProperty(Context.REFERRAL, "ignore");
props.setProperty(Context.SECURITY_AUTHENTICATION, "simple");
props.setProperty(Context.SECURITY_PRINCIPAL, "cn=Manager");
props.setProperty(Context.SECURITY_CREDENTIALS, "secret");

SimpleRegistry reg = new SimpleRegistry();
reg.put("myldap", new InitialLdapContext(props, null));

CamelContext context = new DefaultCamelContext(reg);
context.addRoutes(
    new RouteBuilder() {
        public void configure() throws Exception {
            from("direct:start").to("ldap:myldap?base=ou=test");
        }
    }
);
context.start();

ProducerTemplate template = context.createProducerTemplate();

Endpoint endpoint = context.getEndpoint("direct:start");
Exchange exchange = endpoint.createExchange();
exchange.getIn().setBody("(uid=test)");
Exchange out = template.send(endpoint, exchange);

Collection<SearchResult> data = out.getOut().getBody(Collection.class);
assert data != null;
assert !data.isEmpty();

System.out.println(out.getOut().getBody());

context.stop();

All required is to create a custom socket factory and reference it in the InitialDirContext bean - see below sample.

SSL Configuration

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
                 http://camel.apache.org/schema/blueprint http://camel.apache.org/schema/blueprint/camel-blueprint.xsd">


    <sslContextParameters xmlns="http://camel.apache.org/schema/blueprint"
                          id="sslContextParameters">
        <keyManagers
                keyPassword="{{keystore.pwd}}">
            <keyStore
                    resource="{{keystore.url}}"
                    password="{{keystore.pwd}}"/>
        </keyManagers>
    </sslContextParameters>

    <bean id="customSocketFactory" class="zotix.co.util.CustomSocketFactory">
        <argument ref="sslContextParameters" />
    </bean>
    <bean id="ldapserver" class="javax.naming.directory.InitialDirContext" scope="prototype">
        <argument>
            <props>
                <prop key="java.naming.factory.initial" value="com.sun.jndi.ldap.LdapCtxFactory"/>
                <prop key="java.naming.provider.url" value="ldaps://lab.zotix.co:636"/>
                <prop key="java.naming.security.protocol" value="ssl"/>
                <prop key="java.naming.security.authentication" value="simple" />
                <prop key="java.naming.security.principal" value="cn=Manager,dc=example,dc=com"/>
                <prop key="java.naming.security.credentials" value="passw0rd"/>
                <prop key="java.naming.ldap.factory.socket"
                      value="zotix.co.util.CustomSocketFactory"/>
            </props>
        </argument>
    </bean>
</blueprint>

Custom Socket Factory

import org.apache.camel.util.jsse.SSLContextParameters;

import javax.net.SocketFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManagerFactory;
import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.security.KeyStore;

/**
 * The CustomSocketFactory. Loads the KeyStore and creates an instance of SSLSocketFactory
 */
public class CustomSocketFactory extends SSLSocketFactory {

    private static SSLSocketFactory socketFactory;

    /**
     * Called by the getDefault() method.
     */
    public CustomSocketFactory() {

    }

    /**
     * Called by Blueprint DI to initialise an instance of SocketFactory
     *
     * @param sslContextParameters
     */
    public CustomSocketFactory(SSLContextParameters sslContextParameters) {
        try {
            KeyStore keyStore = sslContextParameters.getKeyManagers().getKeyStore().createKeyStore();
            TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
            tmf.init(keyStore);
            SSLContext ctx = SSLContext.getInstance("TLS");
            ctx.init(null, tmf.getTrustManagers(), null);
            socketFactory = ctx.getSocketFactory();
        } catch (Exception ex) {
            ex.printStackTrace(System.err);  /* handle exception */
        }
    }

    /**
     * Getter for the SocketFactory
     *
     * @return
     */
    public static SocketFactory getDefault() {
        return new CustomSocketFactory();
    }

    @Override
    public String[] getDefaultCipherSuites() {
        return socketFactory.getDefaultCipherSuites();
    }

    @Override
    public String[] getSupportedCipherSuites() {
        return socketFactory.getSupportedCipherSuites();
    }

    @Override
    public Socket createSocket(Socket socket, String string, int i, boolean bln) throws IOException {
        return socketFactory.createSocket(socket, string, i, bln);
    }

    @Override
    public Socket createSocket(String string, int i) throws IOException {
        return socketFactory.createSocket(string, i);
    }

    @Override
    public Socket createSocket(String string, int i, InetAddress ia, int i1) throws IOException {
        return socketFactory.createSocket(string, i, ia, i1);
    }

    @Override
    public Socket createSocket(InetAddress ia, int i) throws IOException {
        return socketFactory.createSocket(ia, i);
    }

    @Override
    public Socket createSocket(InetAddress ia, int i, InetAddress ia1, int i1) throws IOException {
        return socketFactory.createSocket(ia, i, ia1, i1);
    }
}