Added support for DIGEST-MD5 SASL authentication mechanism. (LDAP-173)

changelog.txt

@@ -10,6 +10,7 @@ http://www.ietf.org/rfc/rfc2254.txt
 http://www.ietf.org/rfc/rfc2255.txt
 http://www.ietf.org/rfc/rfc2256.txt
 http://www.ietf.org/rfc/rfc2696.txt
+http://www.ietf.org/rfc/rfc2829.txt
 
 Changes in version 1.3.1 (October 2010)
 -------------------------------------------
@@ -46,6 +47,10 @@ Changes in version 1.3.1 (October 2010)
 * Authentication methods now log problems at level INFO rather than ERROR.
   (LDAP-170)
   
+* DIGEST-MD5 SASL authentication mechanism is now supported, as specified by
+  RFC 2829 (see http://www.ietf.org/rfc/rfc2829.txt, section 4). (LDAP-173)
+  Contributed by Marvin S. Addison.
+
 * DefaultDirObjectFactory calls a Java5 version of the IllegalArgumentException
   constructor. (LDAP 196).
 

core/src/main/java/org/springframework/ldap/core/support/DigestMd5DirContextAuthenticationStrategy.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2005-2009 the original author or authors.
+ *
+ * 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.springframework.ldap.core.support;
+
+import java.util.Hashtable;
+
+import javax.naming.Context;
+import javax.naming.directory.DirContext;
+
+/**
+ * Authentication strategy for LDAP DIGEST-MD5 SASL mechanism.
+ *
+ * @author Marvin S. Addison
+ */
+public class DigestMd5DirContextAuthenticationStrategy implements DirContextAuthenticationStrategy {
+
+	/** Authentication type for DIGEST-MD5 auth */
+	private static final String DIGEST_MD5_AUTHENTICATION = "DIGEST-MD5";
+
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.ldap.core.support.DirContextAuthenticationStrategy#processContextAfterCreation(javax.naming.directory.DirContext,
+	 * java.lang.String, java.lang.String)
+	 */
+	public DirContext processContextAfterCreation(DirContext ctx, String userDn, String password) {
+		return ctx;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.ldap.core.support.DirContextAuthenticationStrategy#setupEnvironment(java.util.Hashtable,
+	 * java.lang.String, java.lang.String)
+	 */
+	public void setupEnvironment(Hashtable env, String userDn, String password) {
+		env.put(Context.SECURITY_AUTHENTICATION, DIGEST_MD5_AUTHENTICATION);
+		// userDn should be a bare username for DIGEST-MD5
+		env.put(Context.SECURITY_PRINCIPAL, userDn);
+		env.put(Context.SECURITY_CREDENTIALS, password);
+	}
+}

pom.xml

@@ -76,6 +76,9 @@
 		<contributor>
 			<name>Paul Harvey</name>
 		</contributor>
+		<contributor>
+			<name>Marvin S. Addison</name>
+		</contributor>
 	</contributors>
 	<organization>
 		<name>The Spring LDAP Framework</name>