/**
* 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.hadoop.gateway.services.security.impl;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.cert.Certificate;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.Map;
import java.util.Random;
import org.apache.hadoop.gateway.GatewayMessages;
import org.apache.hadoop.gateway.config.GatewayConfig;
import org.apache.hadoop.gateway.i18n.messages.MessagesFactory;
import org.apache.hadoop.gateway.services.ServiceLifecycleException;
import org.apache.hadoop.gateway.services.security.AliasService;
import org.apache.hadoop.gateway.services.security.AliasServiceException;
import org.apache.hadoop.gateway.services.security.KeystoreService;
import org.apache.hadoop.gateway.services.security.KeystoreServiceException;
import org.apache.hadoop.gateway.services.security.MasterService;
public class DefaultAliasService implements AliasService {
private static final GatewayMessages LOG = MessagesFactory.get( GatewayMessages.class );
private static final String GATEWAY_IDENTITY_PASSPHRASE = "gateway-identity-passphrase";
protected char[] chars = { 'a', 'b', 'c', 'd', 'e', 'f', 'g',
'h', 'j', 'k', 'm', 'n', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K',
'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
'2', '3', '4', '5', '6', '7', '8', '9',};
private KeystoreService keystoreService;
private MasterService masterService;
@Override
public void init(GatewayConfig config, Map<String, String> options)
throws ServiceLifecycleException {
}
@Override
public void start() throws ServiceLifecycleException {
}
@Override
public void stop() throws ServiceLifecycleException {
}
@Override
public char[] getGatewayIdentityPassphrase() throws AliasServiceException {
char[] passphrase = getPasswordFromAliasForGateway(GATEWAY_IDENTITY_PASSPHRASE);
if (passphrase == null) {
passphrase = masterService.getMasterSecret();
}
return passphrase;
}
/* (non-Javadoc)
* @see org.apache.hadoop.gateway.services.security.impl.AliasService#getAliasForCluster(java.lang.String, java.lang.String)
*/
@Override
public char[] getPasswordFromAliasForCluster(String clusterName, String alias)
throws AliasServiceException {
return getPasswordFromAliasForCluster(clusterName, alias, false);
}
/* (non-Javadoc)
* @see org.apache.hadoop.gateway.services.security.impl.AliasService#getAliasForCluster(java.lang.String, java.lang.String, boolean)
*/
@Override
public char[] getPasswordFromAliasForCluster(String clusterName, String alias, boolean generate)
throws AliasServiceException {
char[] credential = null;
try {
credential = keystoreService.getCredentialForCluster(clusterName, alias);
if (credential == null) {
if (generate) {
generateAliasForCluster(clusterName, alias);
credential = keystoreService.getCredentialForCluster(clusterName, alias);
}
}
} catch (KeystoreServiceException e) {
LOG.failedToGetCredentialForCluster(clusterName, e);
throw new AliasServiceException(e);
}
return credential;
}
private String generatePassword(int length) {
StringBuffer sb = new StringBuffer();
Random r = new Random();
for (int i = 0; i < length; i++) {
sb.append(chars[r.nextInt(chars.length)]);
}
return sb.toString();
}
public void setKeystoreService(KeystoreService ks) {
this.keystoreService = ks;
}
public void setMasterService(MasterService ms) {
this.masterService = ms;
}
@Override
public void generateAliasForCluster(String clusterName, String alias)
throws AliasServiceException {
try {
keystoreService.getCredentialStoreForCluster(clusterName);
} catch (KeystoreServiceException e) {
LOG.failedToGenerateAliasForCluster(clusterName, e);
throw new AliasServiceException(e);
}
String passwordString = generatePassword(16);
addAliasForCluster(clusterName, alias, passwordString);
}
/* (non-Javadoc)
* @see org.apache.hadoop.gateway.services.security.impl.AliasService#addAliasForCluster(java.lang.String, java.lang.String, java.lang.String)
*/
@Override
public void addAliasForCluster(String clusterName, String alias, String value) {
try {
keystoreService.addCredentialForCluster(clusterName, alias, value);
} catch (KeystoreServiceException e) {
LOG.failedToAddCredentialForCluster(clusterName, e);
}
}
@Override
public void removeAliasForCluster(String clusterName, String alias)
throws AliasServiceException {
try {
keystoreService.removeCredentialForCluster(clusterName, alias);
} catch (KeystoreServiceException e) {
throw new AliasServiceException(e);
}
}
@Override
public char[] getPasswordFromAliasForGateway(String alias)
throws AliasServiceException {
return getPasswordFromAliasForCluster("__gateway", alias);
}
@Override
public void generateAliasForGateway(String alias)
throws AliasServiceException {
generateAliasForCluster("__gateway", alias);
}
/* (non-Javadoc)
* @see org.apache.hadoop.gateway.services.security.AliasService#getCertificateForGateway(java.lang.String)
*/
@Override
public Certificate getCertificateForGateway(String alias) {
Certificate cert = null;
try {
cert = this.keystoreService.getKeystoreForGateway().getCertificate(alias);
} catch (KeyStoreException e) {
LOG.unableToRetrieveCertificateForGateway(e);
// should we throw an exception?
} catch (KeystoreServiceException e) {
LOG.unableToRetrieveCertificateForGateway(e);
}
return cert;
}
/* (non-Javadoc)
* @see org.apache.hadoop.gateway.services.security.AliasService#getAliasesForCluster(java.lang.String)
*/
@Override
public List<String> getAliasesForCluster(String clusterName) {
ArrayList<String> list = new ArrayList<String>();
KeyStore keyStore;
try {
keyStore = keystoreService.getCredentialStoreForCluster(clusterName);
if (keyStore != null) {
String alias = null;
try {
Enumeration<String> e = keyStore.aliases();
while (e.hasMoreElements()) {
alias = e.nextElement();
// only include the metadata key names in the list of names
if (!alias.contains("@")) {
list.add(alias);
}
}
} catch (KeyStoreException e) {
LOG.failedToGetCredentialForCluster(clusterName, e);
}
}
} catch (KeystoreServiceException kse) {
LOG.failedToGetCredentialForCluster(clusterName, kse);
}
return list;
}
}