/*
* ModeShape (http://www.modeshape.org)
*
* 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.modeshape.jcr.security;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
import javax.jcr.Credentials;
import org.modeshape.common.logging.Logger;
import org.modeshape.jcr.ExecutionContext;
import org.modeshape.jcr.JcrI18n;
/**
* An implementation of {@link AuthenticationProvider} that represents an ordered list of other {@link AuthenticationProvider}
* implementations.
*/
public class AuthenticationProviders implements AuthenticationProvider {
private final List<AuthenticationProvider> providers;
public AuthenticationProviders() {
this.providers = new CopyOnWriteArrayList<AuthenticationProvider>();
}
public AuthenticationProviders( List<AuthenticationProvider> providers ) {
this.providers = new CopyOnWriteArrayList<AuthenticationProvider>(providers);
}
public AuthenticationProviders( AuthenticationProvider... providers ) {
this.providers = new CopyOnWriteArrayList<AuthenticationProvider>(providers);
}
@Override
public ExecutionContext authenticate( Credentials credentials,
String repositoryName,
String workspaceName,
ExecutionContext repositoryContext,
Map<String, Object> sessionAttributes ) {
ExecutionContext result = null;
for (AuthenticationProvider provider : providers) {
try {
// The session attributes from prior, failed authenticators should be cleared ...
sessionAttributes.clear();
result = provider.authenticate(credentials, repositoryName, workspaceName, repositoryContext, sessionAttributes);
if (result != null) return result;
} catch (Exception e) {
Logger.getLogger(AuthenticationProviders.class).error(e,
JcrI18n.errorInAuthenticationProvider,
provider.getClass().getName(),
repositoryName,
e.getMessage());
}
}
return null;
}
public AuthenticationProviders with( AuthenticationProvider provider ) {
List<AuthenticationProvider> providers = new CopyOnWriteArrayList<AuthenticationProvider>(this.providers);
providers.add(provider);
return new AuthenticationProviders(providers);
}
public static AuthenticationProviders with( AuthenticationProvider... providers ) {
List<AuthenticationProvider> providerList = new CopyOnWriteArrayList<AuthenticationProvider>();
for (AuthenticationProvider provider : providers) {
if (provider != null) providerList.add(provider);
}
return new AuthenticationProviders(providerList);
}
}