package org.apache.cassandra.security;
/*
*
* 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.
*
*/
import java.io.FileInputStream;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.security.KeyStore;
import java.util.Set;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLServerSocket;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManagerFactory;
import org.apache.cassandra.config.EncryptionOptions;
import org.apache.cassandra.io.util.FileUtils;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.collect.Sets;
/**
* A Factory for providing and setting up Client and Server SSL wrapped
* Socket and ServerSocket
*/
public final class SSLFactory
{
private static final Logger logger_ = LoggerFactory.getLogger(SSLFactory.class);
public static SSLServerSocket getServerSocket(EncryptionOptions options, InetAddress address, int port) throws IOException
{
SSLContext ctx = createSSLContext(options);
SSLServerSocket serverSocket = (SSLServerSocket)ctx.getServerSocketFactory().createServerSocket();
serverSocket.setReuseAddress(true);
String[] suits = filterCipherSuites(serverSocket.getSupportedCipherSuites(), options.cipher_suites);
serverSocket.setEnabledCipherSuites(suits);
serverSocket.bind(new InetSocketAddress(address, port), 100);
return serverSocket;
}
/** Create a socket and connect */
public static SSLSocket getSocket(EncryptionOptions options, InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException
{
SSLContext ctx = createSSLContext(options);
SSLSocket socket = (SSLSocket) ctx.getSocketFactory().createSocket(address, port, localAddress, localPort);
String[] suits = filterCipherSuites(socket.getSupportedCipherSuites(), options.cipher_suites);
socket.setEnabledCipherSuites(suits);
return socket;
}
/** Just create a socket */
public static SSLSocket getSocket(EncryptionOptions options) throws IOException
{
SSLContext ctx = createSSLContext(options);
SSLSocket socket = (SSLSocket) ctx.getSocketFactory().createSocket();
String[] suits = filterCipherSuites(socket.getSupportedCipherSuites(), options.cipher_suites);
socket.setEnabledCipherSuites(suits);
return socket;
}
private static SSLContext createSSLContext(EncryptionOptions options) throws IOException
{
FileInputStream tsf = new FileInputStream(options.truststore);
FileInputStream ksf = new FileInputStream(options.keystore);
SSLContext ctx;
try
{
ctx = SSLContext.getInstance(options.protocol);
TrustManagerFactory tmf;
KeyManagerFactory kmf;
tmf = TrustManagerFactory.getInstance(options.algorithm);
KeyStore ts = KeyStore.getInstance(options.store_type);
ts.load(tsf, options.truststore_password.toCharArray());
tmf.init(ts);
kmf = KeyManagerFactory.getInstance(options.algorithm);
KeyStore ks = KeyStore.getInstance(options.store_type);
ks.load(ksf, options.keystore_password.toCharArray());
kmf.init(ks, options.keystore_password.toCharArray());
ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
}
catch (Exception e)
{
throw new IOException("Error creating the initializing the SSL Context", e);
}
finally
{
FileUtils.closeQuietly(tsf);
FileUtils.closeQuietly(ksf);
}
return ctx;
}
private static String[] filterCipherSuites(String[] supported, String[] desired)
{
Set<String> des = Sets.newHashSet(desired);
Set<String> return_ = Sets.intersection(Sets.newHashSet(supported), des);
if (des.size() > return_.size())
logger_.warn("Filtering out {} as it isnt supported by the socket", StringUtils.join(Sets.difference(des, return_), ","));
return return_.toArray(new String[return_.size()]);
}
}