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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.catalina.authenticator.jaspic;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
import jakarta.security.auth.message.AuthException;
import jakarta.security.auth.message.MessageInfo;
import jakarta.security.auth.message.config.ServerAuthConfig;
import jakarta.security.auth.message.config.ServerAuthContext;
import jakarta.security.auth.message.module.ServerAuthModule;
import org.apache.tomcat.util.res.StringManager;
/**
* Basic implementation primarily intended for use when using third-party {@link ServerAuthModule} implementations that
* only provide the module. This implementation supports configuring the {@link ServerAuthContext} with multiple
* modules.
*/
public class SimpleServerAuthConfig implements ServerAuthConfig {
private static final StringManager sm = StringManager.getManager(SimpleServerAuthConfig.class);
private static final String SERVER_AUTH_MODULE_KEY_PREFIX =
"org.apache.catalina.authenticator.jaspic.ServerAuthModule.";
private final String layer;
private final String appContext;
private final CallbackHandler handler;
private final Map<String,Object> properties;
private volatile ServerAuthContext serverAuthContext;
public SimpleServerAuthConfig(String layer, String appContext, CallbackHandler handler,
Map<String,Object> properties) {
this.layer = layer;
this.appContext = appContext;
this.handler = handler;
this.properties = properties;
}
@Override
public String getMessageLayer() {
return layer;
}
@Override
public String getAppContext() {
return appContext;
}
@Override
public String getAuthContextID(MessageInfo messageInfo) {
return messageInfo.toString();
}
@Override
public void refresh() {
serverAuthContext = null;
}
@Override
public boolean isProtected() {
return false;
}
@Override
public ServerAuthContext getAuthContext(String authContextID, Subject serviceSubject, Map<String,Object> properties)
throws AuthException {
ServerAuthContext serverAuthContext = this.serverAuthContext;
if (serverAuthContext == null) {
synchronized (this) {
if (this.serverAuthContext == null) {
Map<String,Object> mergedProperties = new HashMap<>();
if (this.properties != null) {
mergedProperties.putAll(this.properties);
}
if (properties != null) {
mergedProperties.putAll(properties);
}
List<ServerAuthModule> modules = new ArrayList<>();
int moduleIndex = 1;
String key = SERVER_AUTH_MODULE_KEY_PREFIX + moduleIndex;
Object moduleClassName = mergedProperties.get(key);
while (moduleClassName instanceof String) {
try {
Class<?> clazz = Class.forName((String) moduleClassName);
ServerAuthModule module = (ServerAuthModule) clazz.getConstructor().newInstance();
module.initialize(null, null, handler, mergedProperties);
modules.add(module);
} catch (ReflectiveOperationException | IllegalArgumentException | SecurityException e) {
throw new AuthException(e);
}
// Look for the next module
moduleIndex++;
key = SERVER_AUTH_MODULE_KEY_PREFIX + moduleIndex;
moduleClassName = mergedProperties.get(key);
}
if (modules.isEmpty()) {
throw new AuthException(sm.getString("simpleServerAuthConfig.noModules"));
}
this.serverAuthContext = createServerAuthContext(modules);
}
serverAuthContext = this.serverAuthContext;
}
}
return serverAuthContext;
}
protected ServerAuthContext createServerAuthContext(List<ServerAuthModule> modules) {
return new SimpleServerAuthContext(modules);
}
}
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