GUACAMOLE-957: Leverage capturing group in user match regex to determine Guacamole LDAP user identities.

extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/AuthenticationProviderService.java

@@ -19,6 +19,7 @@
 
 package org.apache.guacamole.auth.ldap;
 
+import org.apache.guacamole.auth.ldap.user.UserLDAPConfiguration;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import java.util.Collection;
@@ -169,30 +170,31 @@ public class AuthenticationProviderService {
     }
 
     /**
-     * Returns a new ConnectedLDAPConfiguration that is connected to an LDAP
-     * server associated with the user having the given username and bound
+     * Returns a new UserLDAPConfiguration that is connected to an LDAP server
+     * associated with the Guacamole user having the given username and bound
      * using the provided password. All LDAP servers associated with the given
      * user are tried until the connection and authentication attempt succeeds.
      * If no LDAP servers are available, or no LDAP servers are associated with
-     * the given user, null is returned.
+     * the given user, null is returned. The Guacamole username will be
+     * internally translated to a fully-qualified LDAP DN according to the
+     * configuration of the LDAP server that is ultimately chosen.
      *
      * @param username
-     *      The username or DN of the user to bind as.
+     *      The username of the Guacamole user to bind as.
      *
      * @param password
      *      The password of the user to bind as.
      *
      * @return
-     *      A new ConnectedLDAPConfiguration which is bound to an LDAP server
-     *      using the provided credentials, or null if no LDAP servers are
-     *      available for the given user or connecting/authenticating has
-     *      failed.
+     *      A new UserLDAPConfiguration which is bound to an LDAP server using
+     *      the provided credentials, or null if no LDAP servers are available
+     *      for the given user or connecting/authenticating has failed.
      *
      * @throws GuacamoleException
      *      If configuration information for the user's LDAP server(s) cannot
      *      be retrieved.
      */
-    private ConnectedLDAPConfiguration getLDAPConfiguration(String username,
+    private UserLDAPConfiguration getLDAPConfiguration(String username,
             String password) throws GuacamoleException {
 
         // Get all LDAP server configurations
@@ -236,7 +238,7 @@ public class AuthenticationProviderService {
 
             // Connection and bind were successful
             logger.info("User \"{}\" was successfully authenticated by LDAP server \"{}\".", username, config.getServerHostname());
-            return new ConnectedLDAPConfiguration(config, bindDn, ldapConnection);
+            return new UserLDAPConfiguration(config, translatedUsername, bindDn, ldapConnection);
 
         }
 
@@ -278,7 +280,7 @@ public class AuthenticationProviderService {
                     + " authentication provider.", CredentialsInfo.USERNAME_PASSWORD);
         }
 
-        ConnectedLDAPConfiguration config = getLDAPConfiguration(username, password);
+        UserLDAPConfiguration config = getLDAPConfiguration(username, password);
         if (config == null)
             throw new GuacamoleInvalidCredentialsException("Invalid login.",
                     CredentialsInfo.USERNAME_PASSWORD);

extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/user/LDAPAuthenticatedUser.java

@@ -89,14 +89,14 @@ public class LDAPAuthenticatedUser extends AbstractAuthenticatedUser {
      *     The unique identifiers of all user groups which affect the
      *     permissions available to this user.
      */
-    public void init(ConnectedLDAPConfiguration config, Credentials credentials,
+    public void init(UserLDAPConfiguration config, Credentials credentials,
             Map<String, String> tokens, Set<String> effectiveGroups) {
         this.config = config;
         this.credentials = credentials;
         this.tokens = Collections.unmodifiableMap(tokens);
         this.effectiveGroups = effectiveGroups;
         this.bindDn = config.getBindDN();
-        setIdentifier(credentials.getUsername());
+        setIdentifier(config.getGuacamoleUsername());
     }
     
     /**

extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/user/UserLDAPConfiguration.java

@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.guacamole.auth.ldap.user;
+
+import org.apache.directory.api.ldap.model.name.Dn;
+import org.apache.directory.ldap.client.api.LdapNetworkConnection;
+import org.apache.guacamole.auth.ldap.ConnectedLDAPConfiguration;
+import org.apache.guacamole.auth.ldap.conf.LDAPConfiguration;
+
+/**
+ * LDAPConfiguration implementation that represents the configuration and
+ * network connection of an LDAP that has been bound on behalf of a Guacamole
+ * user.
+ */
+public class UserLDAPConfiguration extends ConnectedLDAPConfiguration {
+
+    /**
+     * The username of the associated Guacamole user.
+     */
+    private final String username;
+    
+    /**
+     * Creates a new UserLDAPConfiguration that associates the given
+     * LDAPConfiguration of an LDAP server with the active network connection to
+     * that server, as well as the username of the Guacamole user on behalf of
+     * whom that connection was established. All functions inherited from the
+     * LDAPConfiguration interface are delegated to the given LDAPConfiguration.
+     * It is the responsibility of the caller to ensure the provided
+     * LdapNetworkConnection is closed after it is no longer needed.
+     *
+     * @param config
+     *      The LDAPConfiguration to wrap.
+     *
+     * @param username
+     *      The username of the associated Guacamole user.
+     *
+     * @param bindDn
+     *      The LDAP DN that was used to bind with the LDAP server to produce
+     *      the given LdapNetworkConnection.
+     *
+     * @param connection
+     *      The connection to the LDAP server represented by the given
+     *      configuration.
+     */
+    public UserLDAPConfiguration(LDAPConfiguration config,
+            String username, Dn bindDn, LdapNetworkConnection connection) {
+        super(config, bindDn, connection);
+        this.username = username;
+    }
+
+    /**
+     * Returns the username of the Guacamole user on behalf of whom the
+     * associated LDAP network connection was established.
+     *
+     * @return
+     *     The username of the associated Guacamole user.
+     */
+    public String getGuacamoleUsername() {
+        return username;
+    }
+
+}