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/**
* 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.pulsar.broker.authentication;
import java.io.Closeable;
import java.io.IOException;
import java.util.Map;
import javax.naming.AuthenticationException;
import javax.servlet.http.HttpServletRequest;
import org.apache.pulsar.broker.PulsarServerException;
import org.apache.pulsar.broker.ServiceConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.collect.Maps;
/**
* Authentication service
*
*/
public class AuthenticationService implements Closeable {
private static final Logger LOG = LoggerFactory.getLogger(AuthenticationService.class);
private final Map<String, AuthenticationProvider> providers = Maps.newHashMap();
public AuthenticationService(ServiceConfiguration conf) throws PulsarServerException {
if (conf.isAuthenticationEnabled()) {
try {
AuthenticationProvider provider;
for (String className : conf.getAuthenticationProviders()) {
if (className.isEmpty()) {
continue;
}
provider = (AuthenticationProvider) Class.forName(className).newInstance();
provider.initialize(conf);
providers.put(provider.getAuthMethodName(), provider);
LOG.info("{} has been loaded.", className);
}
if (providers.isEmpty()) {
LOG.warn("No authentication providers are loaded.");
}
} catch (Throwable e) {
throw new PulsarServerException("Failed to load an authentication provider.", e);
}
} else {
LOG.info("Authentication is disabled");
}
}
public String authenticate(AuthenticationDataSource authData, String authMethodName)
throws AuthenticationException {
AuthenticationProvider provider = providers.get(authMethodName);
if (provider != null) {
return provider.authenticate(authData);
} else {
throw new AuthenticationException("Unsupported authentication mode: " + authMethodName);
}
}
public String authenticateHttpRequest(HttpServletRequest request) throws AuthenticationException {
// Try to validate with any configured provider
AuthenticationDataSource authData = new AuthenticationDataHttps(request);
for (AuthenticationProvider provider : providers.values()) {
try {
return provider.authenticate(authData);
} catch (AuthenticationException e) {
// Ignore the exception because we don't know which authentication method is expected here.
}
}
// No authentication provided
if (!providers.isEmpty()) {
// If at least a provider was configured, then the authentication needs to be provider
throw new AuthenticationException("Authentication required");
} else {
// No authentication required
return "<none>";
}
}
@Override
public void close() throws IOException {
for (AuthenticationProvider provider : providers.values()) {
provider.close();
}
}
}