/*
* 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.sling.jcr.jackrabbit.base.security;
import org.apache.jackrabbit.core.config.BeanConfig;
import org.apache.jackrabbit.core.config.ConfigurationException;
import org.apache.jackrabbit.core.config.LoginModuleConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.security.auth.Subject;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.login.Configuration;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;
import javax.security.auth.spi.LoginModule;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.util.Map;
import java.util.Properties;
public class DelegatingLoginModule implements LoginModule {
private static Logger logger = LoggerFactory.getLogger(DelegatingLoginModule.class);
public static final String JAAS_CONFIG_ALGO_NAME = "JavaLoginConfig";
private LoginModule delegate;
private LoginContext loginContext;
private boolean loginSucceeded;
private String appName;
private String delegateLoginModuleClass;
private String providerName;
private LoginException loginException;
public void initialize(Subject subject, CallbackHandler callbackHandler, Map<String, ?> sharedState,
Map<String, ?> options) {
Configuration config = null;
try{
config = Configuration.getInstance(JAAS_CONFIG_ALGO_NAME, null, providerName);
}catch (NoSuchProviderException e){
logger.debug("No provider "+providerName+"found so far",e);
} catch (NoSuchAlgorithmException e) {
logger.debug("No provider "+providerName+"found so far for fetching JAAS " +
"config with algorithm name "+JAAS_CONFIG_ALGO_NAME,e);
}
if(config != null){
final Thread current = Thread.currentThread();
final ClassLoader orig = current.getContextClassLoader();
try {
current.setContextClassLoader(DelegatingLoginModule.class.getClassLoader());
loginContext = new LoginContext(appName, subject,callbackHandler, config);
} catch (LoginException e) {
loginException = e;
} finally{
current.setContextClassLoader(orig);
}
}else{
//No support so far from OSGi so would use default logic used by Jackrabbit
//to construct the LoginModule
Properties p = new Properties();
p.putAll(options);
BeanConfig bc = new BeanConfig(delegateLoginModuleClass,p);
LoginModuleConfig lmc = new LoginModuleConfig(bc);
try {
delegate = lmc.getLoginModule();
delegate.initialize(subject,callbackHandler,sharedState,options);
logger.info("No JAAS Configuration provider found would be directly invoking LoginModule {}",delegateLoginModuleClass);
} catch (ConfigurationException e) {
//Behaviour is same as org.apache.jackrabbit.core.security.authentication.LocalAuthContext.login()
loginException = new LoginException(e.getMessage());
}
}
}
public boolean login() throws LoginException {
assertState();
if (loginContext == null) {
return delegate.login();
} else {
loginContext.login();
loginSucceeded = true;
return true;
}
}
public boolean commit() throws LoginException {
assertState();
if (loginContext == null) {
return delegate.commit();
} else {
return loginSucceeded;
}
}
public boolean abort() throws LoginException {
assertState();
if (loginContext == null) {
return delegate.abort();
} else {
return loginSucceeded;
}
}
public boolean logout() throws LoginException {
assertState();
if (loginContext == null) {
return delegate.logout();
} else {
loginContext.logout();
return true;
}
}
private void assertState() throws LoginException {
if(loginException != null){
throw loginException;
}
}
public void setAppName(String appName) {
this.appName = appName;
}
public void setDelegateLoginModuleClass(String delegateLoginModuleClass) {
this.delegateLoginModuleClass = delegateLoginModuleClass;
}
public void setProviderName(String providerName) {
this.providerName = providerName;
}
}