GUACAMOLE-1239: Make identifier comparison case-insensitive.

extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/conf/ConfigurationService.java

@@ -362,5 +362,26 @@ public class ConfigurationService {
             throw new GuacamoleServerException("Unknown host specified for NAS IP.", e);
         }
     }
+    
+    /**
+     * Returns true if the usernames provided to the RADIUS authentication
+     * module should be treated as case-sensitive, or false if usernames
+     * should be treated as case-insensitive. The default value is read from
+     * Guacamole's global configuration, which defaults to true, but can be
+     * overridden for the RADIUS extension, if desired.
+     * 
+     * @return
+     *     true if usernames should be treated as case-sensitive, otherwise
+     *     false.
+     * 
+     * @throws GuacamoleException 
+     *     If guacamole.properties cannot be parsed.
+     */
+    public boolean getCaseSensitiveUsernames() throws GuacamoleException {
+        return environment.getProperty(
+                RadiusGuacamoleProperties.RADIUS_CASE_SENSITIVE_USERNAMES,
+                environment.getCaseSensitiveUsernames()
+        );
+    }
 
 }

extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/conf/RadiusGuacamoleProperties.java

@@ -204,6 +204,18 @@ public class RadiusGuacamoleProperties {
         public String getName() { return "radius-nas-ip"; }
         
     };
+    
+    /**
+     * A property used to configure whether or not usernames within the RADIUS
+     * module should be treated as case-sensitive.
+     */
+    public static final BooleanGuacamoleProperty RADIUS_CASE_SENSITIVE_USERNAMES =
+            new BooleanGuacamoleProperty() {
+        
+        @Override
+        public String getName() { return "radius-case-sensitive-usernames"; }
+        
+    };
 
 
 }

extensions/guacamole-auth-radius/src/main/java/org/apache/guacamole/auth/radius/user/AuthenticatedUser.java

@@ -23,6 +23,8 @@ import com.google.inject.Inject;
 import org.apache.guacamole.net.auth.AbstractAuthenticatedUser;
 import org.apache.guacamole.net.auth.AuthenticationProvider;
 import org.apache.guacamole.net.auth.Credentials;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * An RADIUS-specific implementation of AuthenticatedUser, associating a
@@ -30,12 +32,23 @@ import org.apache.guacamole.net.auth.Credentials;
  */
 public class AuthenticatedUser extends AbstractAuthenticatedUser {
 
+    /**
+     * Logger for this class.
+     */
+    private static final Logger LOGGER = LoggerFactory.getLogger(AuthenticatedUser.class);
+    
     /**
      * Reference to the authentication provider associated with this
      * authenticated user.
      */
     @Inject
     private AuthenticationProvider authProvider;
+    
+    /**
+     * A reference to the configuration service associated with this module.
+     */
+    @Inject
+    private ConfigurationService confService;
 
     /**
      * The credentials provided when this user was authenticated.
@@ -62,5 +75,18 @@ public class AuthenticatedUser extends AbstractAuthenticatedUser {
     public Credentials getCredentials() {
         return credentials;
     }
+    
+    @Override
+    public boolean isCaseSensitive() {
+        try {
+            return confService.getCaseSensitiveUsernames();
+        }
+        catch (GuacamoleException e) {
+            LOGGER.error("Error retrieving configuration for username case sensiivity. "
+                + "Usernames will be processed as case-sensitive.");
+            LOGGER.debug("Exception caught while retrieving RADIUS configuration.", e);
+            return true;
+        }
+    }
 
 }