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package org.tio.core.ssl.facade;
import java.nio.ByteBuffer;
import java.util.concurrent.atomic.AtomicLong;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLEngineResult;
import javax.net.ssl.SSLException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.tio.core.ChannelContext;
import org.tio.core.ssl.SslVo;
/**
* 一个
* @author tanyaowu
*
*/
public class SSLFacade implements ISSLFacade {
@SuppressWarnings("unused")
private static final String TAG = "SSLFascade";
private static final Logger log = LoggerFactory.getLogger(SSLFacade.class);
private AtomicLong sslSeq = new AtomicLong();
private Handshaker _handshaker;
private IHandshakeCompletedListener _hcl;
private final Worker _worker;
private boolean _clientMode;
private ChannelContext channelContext;
public SSLFacade(ChannelContext channelContext, SSLContext context, boolean client, boolean clientAuthRequired, ITaskHandler taskHandler) {
this.channelContext = channelContext;
//Currently there is no support for SSL session reuse,
// so no need to take a peerHost or port from the host application
final String who = client ? "client" : "server";
SSLEngine engine = makeSSLEngine(context, client, clientAuthRequired);
Buffers buffers = new Buffers(engine.getSession(), channelContext);
_worker = new Worker(who, engine, buffers, channelContext);
_handshaker = new Handshaker(client, _worker, taskHandler, channelContext);
_clientMode = client;
}
// private void debug(final String message, final String... args) {
// SSLLog.debug(TAG, message, args);
// }
@Override
public boolean isClientMode() {
return _clientMode;
}
@Override
public void setHandshakeCompletedListener(IHandshakeCompletedListener hcl) {
_hcl = hcl;
attachCompletionListener();
}
@Override
public void setSSLListener(ISSLListener l) {
_worker.setSSLListener(l);
}
@Override
public void setCloseListener(ISessionClosedListener l) {
_worker.setSessionClosedListener(l);
}
@Override
public void beginHandshake() throws SSLException {
_handshaker.begin();
}
@Override
public boolean isHandshakeCompleted() {
return (_handshaker == null) || _handshaker.isFinished();
}
@Override
public void encrypt(SslVo sslVo) throws SSLException {
long seq = sslSeq.incrementAndGet();
ByteBuffer src = sslVo.getByteBuffer();
ByteBuffer[] byteBuffers = org.tio.core.utils.ByteBufferUtils.split(src, 1024 * 8);
if (byteBuffers == null) {
log.debug("{}, 准备, SSL加密{}, 明文:{}", channelContext, channelContext.getId() + "_" + seq, sslVo);
SSLEngineResult result = _worker.wrap(sslVo, sslVo.getByteBuffer());
log.debug("{}, 完成, SSL加密{}, 明文:{}, 结果:{}", channelContext, channelContext.getId() + "_" + seq, sslVo, result);
} else {
log.debug("{}, 准备, SSL加密{}, 包过大，被拆成了[{}]个包进行发送, 明文:{}", channelContext, channelContext.getId() + "_" + seq, byteBuffers.length, sslVo);
ByteBuffer[] encryptedByteBuffers = new ByteBuffer[byteBuffers.length];
int alllen = 0;
for (int i = 0; i < byteBuffers.length; i++) {
SslVo sslVo1 = new SslVo(byteBuffers[i], sslVo.getObj());
SSLEngineResult result = _worker.wrap(sslVo1, byteBuffers[i]);
ByteBuffer encryptedByteBuffer = sslVo1.getByteBuffer();
encryptedByteBuffers[i] = encryptedByteBuffer;
alllen += encryptedByteBuffer.limit();
log.debug("{}, 完成, SSL加密{}, 明文:{}, 拆包[{}]的结果:{}", channelContext, channelContext.getId() + "_" + seq, sslVo, (i + 1), result);
}
ByteBuffer encryptedByteBuffer = ByteBuffer.allocate(alllen);
for (int i = 0; i < encryptedByteBuffers.length; i++) {
encryptedByteBuffer.put(encryptedByteBuffers[i]);
}
encryptedByteBuffer.flip();
sslVo.setByteBuffer(encryptedByteBuffer);
}
}
@Override
public void decrypt(ByteBuffer byteBuffer) throws SSLException {
long seq = sslSeq.incrementAndGet();
log.debug("{}, 准备, SSL解密{}, 密文:{}", channelContext, channelContext.getId() + "_" + seq, byteBuffer);
SSLEngineResult result = _worker.unwrap(byteBuffer);
log.debug("{}, 完成, SSL解密{}, 密文:{}, 结果:{}", channelContext, channelContext.getId() + "_" + seq, byteBuffer, result);
_handshaker.handleUnwrapResult(result);
}
@Override
public void close() {
/* Called if we want to properly close SSL */
_worker.close(true);
}
@Override
public boolean isCloseCompleted() {
/* Host application should only close underlying transport after
close_notify packet generated by wrap has been sent to peer. Use this
method to check if the packet has been generated
*/
return _worker.isCloseCompleted();
}
@Override
public void terminate() {
/* Called if peer closed connection unexpectedly */
_worker.close(false);
}
/* Privates */
private void attachCompletionListener() {
_handshaker.addCompletedListener(new IHandshakeCompletedListener() {
@Override
public void onComplete() {
//_handshaker = null;
if (_hcl != null) {
_hcl.onComplete();
_hcl = null;
}
}
});
}
private SSLEngine makeSSLEngine(SSLContext context, boolean client, boolean clientAuthRequired) {
SSLEngine engine = context.createSSLEngine();
engine.setUseClientMode(client);
engine.setNeedClientAuth(clientAuthRequired);
return engine;
}
}
