--- /dev/null
+//
+// ========================================================================
+// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+// ------------------------------------------------------------------------
+// All rights reserved. This program and the accompanying materials
+// are made available under the terms of the Eclipse Public License v1.0
+// and Apache License v2.0 which accompanies this distribution.
+//
+// The Eclipse Public License is available at
+// http://www.eclipse.org/legal/epl-v10.html
+//
+// The Apache License v2.0 is available at
+// http://www.opensource.org/licenses/apache2.0.php
+//
+// You may elect to redistribute this code under either of these licenses.
+// ========================================================================
+//
+
+package org.eclipse.jetty.io.ssl;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ClosedChannelException;
+import java.util.Arrays;
+import java.util.concurrent.Executor;
+
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.SSLEngineResult;
+import javax.net.ssl.SSLEngineResult.HandshakeStatus;
+import javax.net.ssl.SSLEngineResult.Status;
+import javax.net.ssl.SSLException;
+
+import org.eclipse.jetty.io.AbstractConnection;
+import org.eclipse.jetty.io.AbstractEndPoint;
+import org.eclipse.jetty.io.ByteBufferPool;
+import org.eclipse.jetty.io.Connection;
+import org.eclipse.jetty.io.EndPoint;
+import org.eclipse.jetty.io.EofException;
+import org.eclipse.jetty.io.FillInterest;
+import org.eclipse.jetty.io.RuntimeIOException;
+import org.eclipse.jetty.io.SelectChannelEndPoint;
+import org.eclipse.jetty.io.WriteFlusher;
+import org.eclipse.jetty.util.BufferUtil;
+import org.eclipse.jetty.util.Callback;
+import org.eclipse.jetty.util.log.Log;
+import org.eclipse.jetty.util.log.Logger;
+
+/**
+ * A Connection that acts as an interceptor between an EndPoint providing SSL encrypted data
+ * and another consumer of an EndPoint (typically an {@link Connection} like HttpConnection) that
+ * wants unencrypted data.
+ * <p>
+ * The connector uses an {@link EndPoint} (typically {@link SelectChannelEndPoint}) as
+ * it's source/sink of encrypted data. It then provides an endpoint via {@link #getDecryptedEndPoint()} to
+ * expose a source/sink of unencrypted data to another connection (eg HttpConnection).
+ * <p>
+ * The design of this class is based on a clear separation between the passive methods, which do not block nor schedule any
+ * asynchronous callbacks, and active methods that do schedule asynchronous callbacks.
+ * <p>
+ * The passive methods are {@link DecryptedEndPoint#fill(ByteBuffer)} and {@link DecryptedEndPoint#flush(ByteBuffer...)}. They make best
+ * effort attempts to progress the connection using only calls to the encrypted {@link EndPoint#fill(ByteBuffer)} and {@link EndPoint#flush(ByteBuffer...)}
+ * methods. They will never block nor schedule any readInterest or write callbacks. If a fill/flush cannot progress either because
+ * of network congestion or waiting for an SSL handshake message, then the fill/flush will simply return with zero bytes filled/flushed.
+ * Specifically, if a flush cannot proceed because it needs to receive a handshake message, then the flush will attempt to fill bytes from the
+ * encrypted endpoint, but if insufficient bytes are read it will NOT call {@link EndPoint#fillInterested(Callback)}.
+ * <p>
+ * It is only the active methods : {@link DecryptedEndPoint#fillInterested(Callback)} and
+ * {@link DecryptedEndPoint#write(Callback, ByteBuffer...)} that may schedule callbacks by calling the encrypted
+ * {@link EndPoint#fillInterested(Callback)} and {@link EndPoint#write(Callback, ByteBuffer...)}
+ * methods. For normal data handling, the decrypted fillInterest method will result in an encrypted fillInterest and a decrypted
+ * write will result in an encrypted write. However, due to SSL handshaking requirements, it is also possible for a decrypted fill
+ * to call the encrypted write and for the decrypted flush to call the encrypted fillInterested methods.
+ * <p>
+ * MOST IMPORTANTLY, the encrypted callbacks from the active methods (#onFillable() and WriteFlusher#completeWrite()) do no filling or flushing
+ * themselves. Instead they simple make the callbacks to the decrypted callbacks, so that the passive encrypted fill/flush will
+ * be called again and make another best effort attempt to progress the connection.
+ *
+ */
+public class SslConnection extends AbstractConnection
+{
+ private static final Logger LOG = Log.getLogger(SslConnection.class);
+ private static final boolean DEBUG = LOG.isDebugEnabled(); // Easy for the compiler to remove the code if DEBUG==false
+ private static final ByteBuffer __FILL_CALLED_FLUSH= BufferUtil.allocate(0);
+ private static final ByteBuffer __FLUSH_CALLED_FILL= BufferUtil.allocate(0);
+ private final ByteBufferPool _bufferPool;
+ private final SSLEngine _sslEngine;
+ private final DecryptedEndPoint _decryptedEndPoint;
+ private ByteBuffer _decryptedInput;
+ private ByteBuffer _encryptedInput;
+ private ByteBuffer _encryptedOutput;
+ private final boolean _encryptedDirectBuffers = false;
+ private final boolean _decryptedDirectBuffers = false;
+ private final Runnable _runCompletWrite = new Runnable()
+ {
+ @Override
+ public void run()
+ {
+ _decryptedEndPoint.getWriteFlusher().completeWrite();
+ }
+ };
+ private boolean _renegotiationAllowed;
+
+ public SslConnection(ByteBufferPool byteBufferPool, Executor executor, EndPoint endPoint, SSLEngine sslEngine)
+ {
+ // This connection does not execute calls to onfillable, so they will be called by the selector thread.
+ // onfillable does not block and will only wakeup another thread to do the actual reading and handling.
+ super(endPoint, executor, !EXECUTE_ONFILLABLE);
+ this._bufferPool = byteBufferPool;
+ this._sslEngine = sslEngine;
+ this._decryptedEndPoint = newDecryptedEndPoint();
+ }
+
+ protected DecryptedEndPoint newDecryptedEndPoint()
+ {
+ return new DecryptedEndPoint();
+ }
+
+ public SSLEngine getSSLEngine()
+ {
+ return _sslEngine;
+ }
+
+ public DecryptedEndPoint getDecryptedEndPoint()
+ {
+ return _decryptedEndPoint;
+ }
+
+ public boolean isRenegotiationAllowed()
+ {
+ return _renegotiationAllowed;
+ }
+
+ public void setRenegotiationAllowed(boolean renegotiationAllowed)
+ {
+ this._renegotiationAllowed = renegotiationAllowed;
+ }
+
+ @Override
+ public void onOpen()
+ {
+ try
+ {
+ // Begin the handshake
+ _sslEngine.beginHandshake();
+ super.onOpen();
+ getDecryptedEndPoint().getConnection().onOpen();
+ }
+ catch (SSLException x)
+ {
+ getEndPoint().close();
+ throw new RuntimeIOException(x);
+ }
+ }
+
+ @Override
+ public void onClose()
+ {
+ _decryptedEndPoint.getConnection().onClose();
+ super.onClose();
+ }
+
+ @Override
+ public void close()
+ {
+ getDecryptedEndPoint().getConnection().close();
+ }
+
+ @Override
+ public void onFillable()
+ {
+ // onFillable means that there are encrypted bytes ready to be filled.
+ // however we do not fill them here on this callback, but instead wakeup
+ // the decrypted readInterest and/or writeFlusher so that they will attempt
+ // to do the fill and/or flush again and these calls will do the actually
+ // filling.
+
+ if (DEBUG)
+ LOG.debug("onFillable enter {}", _decryptedEndPoint);
+
+ // We have received a close handshake, close the end point to send FIN.
+ if (_decryptedEndPoint.isInputShutdown())
+ _decryptedEndPoint.close();
+
+ // wake up whoever is doing the fill or the flush so they can
+ // do all the filling, unwrapping, wrapping and flushing
+ _decryptedEndPoint.getFillInterest().fillable();
+
+ // If we are handshaking, then wake up any waiting write as well as it may have been blocked on the read
+ synchronized(_decryptedEndPoint)
+ {
+ if (_decryptedEndPoint._flushRequiresFillToProgress)
+ {
+ _decryptedEndPoint._flushRequiresFillToProgress = false;
+ getExecutor().execute(_runCompletWrite);
+ }
+ }
+
+ if (DEBUG)
+ LOG.debug("onFillable exit {}", _decryptedEndPoint);
+ }
+
+ @Override
+ public void onFillInterestedFailed(Throwable cause)
+ {
+ // this means that the fill interest in encrypted bytes has failed.
+ // However we do not handle that here on this callback, but instead wakeup
+ // the decrypted readInterest and/or writeFlusher so that they will attempt
+ // to do the fill and/or flush again and these calls will do the actually
+ // handle the cause.
+ _decryptedEndPoint.getFillInterest().onFail(cause);
+
+ boolean failFlusher = false;
+ synchronized(_decryptedEndPoint)
+ {
+ if (_decryptedEndPoint._flushRequiresFillToProgress)
+ {
+ _decryptedEndPoint._flushRequiresFillToProgress = false;
+ failFlusher = true;
+ }
+ }
+ if (failFlusher)
+ _decryptedEndPoint.getWriteFlusher().onFail(cause);
+ }
+
+ @Override
+ public String toString()
+ {
+ ByteBuffer b = _encryptedInput;
+ int ei=b==null?-1:b.remaining();
+ b = _encryptedOutput;
+ int eo=b==null?-1:b.remaining();
+ b = _decryptedInput;
+ int di=b==null?-1:b.remaining();
+
+ return String.format("SslConnection@%x{%s,eio=%d/%d,di=%d} -> %s",
+ hashCode(),
+ _sslEngine.getHandshakeStatus(),
+ ei,eo,di,
+ _decryptedEndPoint.getConnection());
+ }
+
+ public class DecryptedEndPoint extends AbstractEndPoint
+ {
+ private boolean _fillRequiresFlushToProgress;
+ private boolean _flushRequiresFillToProgress;
+ private boolean _cannotAcceptMoreAppDataToFlush;
+ private boolean _handshaken;
+ private boolean _underFlown;
+
+ private final Callback _writeCallback = new Callback()
+ {
+ @Override
+ public void succeeded()
+ {
+ // This means that a write of encrypted data has completed. Writes are done
+ // only if there is a pending writeflusher or a read needed to write
+ // data. In either case the appropriate callback is passed on.
+ boolean fillable = false;
+ synchronized (DecryptedEndPoint.this)
+ {
+ if (DEBUG)
+ LOG.debug("write.complete {}", SslConnection.this.getEndPoint());
+
+ releaseEncryptedOutputBuffer();
+
+ _cannotAcceptMoreAppDataToFlush = false;
+
+ if (_fillRequiresFlushToProgress)
+ {
+ _fillRequiresFlushToProgress = false;
+ fillable = true;
+ }
+ }
+ if (fillable)
+ getFillInterest().fillable();
+ getExecutor().execute(_runCompletWrite);
+ }
+
+ @Override
+ public void failed(final Throwable x)
+ {
+ // This means that a write of data has failed. Writes are done
+ // only if there is an active writeflusher or a read needed to write
+ // data. In either case the appropriate callback is passed on.
+ boolean fail_filler = false;
+ synchronized (DecryptedEndPoint.this)
+ {
+ if (DEBUG)
+ LOG.debug("{} write.failed", SslConnection.this, x);
+ BufferUtil.clear(_encryptedOutput);
+ releaseEncryptedOutputBuffer();
+
+ _cannotAcceptMoreAppDataToFlush = false;
+
+ if (_fillRequiresFlushToProgress)
+ {
+ _fillRequiresFlushToProgress = false;
+ fail_filler = true;
+ }
+ }
+
+ final boolean filler_failed=fail_filler;
+
+ failedCallback(new Callback()
+ {
+ @Override
+ public void succeeded()
+ {
+ }
+
+ @Override
+ public void failed(Throwable x)
+ {
+ if (filler_failed)
+ getFillInterest().onFail(x);
+ getWriteFlusher().onFail(x);
+ }
+
+ },x);
+ }
+ };
+
+ public DecryptedEndPoint()
+ {
+ super(null,getEndPoint().getLocalAddress(), getEndPoint().getRemoteAddress());
+ setIdleTimeout(getEndPoint().getIdleTimeout());
+ }
+
+ @Override
+ protected FillInterest getFillInterest()
+ {
+ return super.getFillInterest();
+ }
+
+ @Override
+ public void setIdleTimeout(long idleTimeout)
+ {
+ super.setIdleTimeout(idleTimeout);
+ getEndPoint().setIdleTimeout(idleTimeout);
+ }
+
+ @Override
+ protected WriteFlusher getWriteFlusher()
+ {
+ return super.getWriteFlusher();
+ }
+
+ @Override
+ protected void onIncompleteFlush()
+ {
+ // This means that the decrypted endpoint write method was called and not
+ // all data could be wrapped. So either we need to write some encrypted data,
+ // OR if we are handshaking we need to read some encrypted data OR
+ // if neither then we should just try the flush again.
+ boolean flush = false;
+ synchronized (DecryptedEndPoint.this)
+ {
+ if (DEBUG)
+ LOG.debug("onIncompleteFlush {}", getEndPoint());
+ // If we have pending output data,
+ if (BufferUtil.hasContent(_encryptedOutput))
+ {
+ // write it
+ _cannotAcceptMoreAppDataToFlush = true;
+ getEndPoint().write(_writeCallback, _encryptedOutput);
+ }
+ // If we are handshaking and need to read,
+ else if (_sslEngine.getHandshakeStatus() == HandshakeStatus.NEED_UNWRAP)
+ {
+ // check if we are actually read blocked in order to write
+ _flushRequiresFillToProgress = true;
+ SslConnection.this.fillInterested();
+ }
+ else
+ {
+ flush = true;
+ }
+ }
+ if (flush)
+ {
+ // If the output is closed,
+ if (isOutputShutdown())
+ {
+ // don't bother writing, just notify of close
+ getWriteFlusher().onClose();
+ }
+ // Else,
+ else
+ {
+ // try to flush what is pending
+ getWriteFlusher().completeWrite();
+ }
+ }
+ }
+
+ @Override
+ protected boolean needsFill() throws IOException
+ {
+ // This means that the decrypted data consumer has called the fillInterested
+ // method on the DecryptedEndPoint, so we have to work out if there is
+ // decrypted data to be filled or what callbacks to setup to be told when there
+ // might be more encrypted data available to attempt another call to fill
+
+ synchronized (DecryptedEndPoint.this)
+ {
+ // Do we already have some app data, then app can fill now so return true
+ if (BufferUtil.hasContent(_decryptedInput))
+ return true;
+
+ // If we have no encrypted data to decrypt OR we have some, but it is not enough
+ if (BufferUtil.isEmpty(_encryptedInput) || _underFlown)
+ {
+ // We are not ready to read data
+
+ // Are we actually write blocked?
+ if (_fillRequiresFlushToProgress)
+ {
+ // we must be blocked trying to write before we can read
+
+ // Do we have data to write
+ if (BufferUtil.hasContent(_encryptedOutput))
+ {
+ // write it
+ _cannotAcceptMoreAppDataToFlush = true;
+ getEndPoint().write(_writeCallback, _encryptedOutput);
+ }
+ else
+ {
+ // we have already written the net data
+ // pretend we are readable so the wrap is done by next readable callback
+ _fillRequiresFlushToProgress = false;
+ return true;
+ }
+ }
+ else
+ {
+ // Normal readable callback
+ // Get called back on onfillable when then is more data to fill
+ SslConnection.this.fillInterested();
+ }
+
+ return false;
+ }
+ else
+ {
+ // We are ready to read data
+ return true;
+ }
+ }
+ }
+
+ @Override
+ public void setConnection(Connection connection)
+ {
+ if (connection instanceof AbstractConnection)
+ {
+ AbstractConnection a = (AbstractConnection)connection;
+ if (a.getInputBufferSize()<_sslEngine.getSession().getApplicationBufferSize())
+ a.setInputBufferSize(_sslEngine.getSession().getApplicationBufferSize());
+ }
+ super.setConnection(connection);
+ }
+
+ public SslConnection getSslConnection()
+ {
+ return SslConnection.this;
+ }
+
+ @Override
+ public synchronized int fill(ByteBuffer buffer) throws IOException
+ {
+ if (DEBUG)
+ LOG.debug("{} fill enter", SslConnection.this);
+ try
+ {
+ // Do we already have some decrypted data?
+ if (BufferUtil.hasContent(_decryptedInput))
+ return BufferUtil.append(buffer,_decryptedInput);
+
+ // We will need a network buffer
+ if (_encryptedInput == null)
+ _encryptedInput = _bufferPool.acquire(_sslEngine.getSession().getPacketBufferSize(), _encryptedDirectBuffers);
+ else
+ BufferUtil.compact(_encryptedInput);
+
+ // We also need an app buffer, but can use the passed buffer if it is big enough
+ ByteBuffer app_in;
+ if (BufferUtil.space(buffer) > _sslEngine.getSession().getApplicationBufferSize())
+ app_in = buffer;
+ else if (_decryptedInput == null)
+ app_in = _decryptedInput = _bufferPool.acquire(_sslEngine.getSession().getApplicationBufferSize(), _decryptedDirectBuffers);
+ else
+ app_in = _decryptedInput;
+
+ // loop filling and unwrapping until we have something
+ while (true)
+ {
+ // Let's try reading some encrypted data... even if we have some already.
+ int net_filled = getEndPoint().fill(_encryptedInput);
+ if (DEBUG)
+ LOG.debug("{} filled {} encrypted bytes", SslConnection.this, net_filled);
+
+ decryption: while (true)
+ {
+ // Let's unwrap even if we have no net data because in that
+ // case we want to fall through to the handshake handling
+ int pos = BufferUtil.flipToFill(app_in);
+ SSLEngineResult unwrapResult = _sslEngine.unwrap(_encryptedInput, app_in);
+ BufferUtil.flipToFlush(app_in, pos);
+ if (DEBUG)
+ LOG.debug("{} unwrap {}", SslConnection.this, unwrapResult);
+
+ HandshakeStatus handshakeStatus = _sslEngine.getHandshakeStatus();
+ HandshakeStatus unwrapHandshakeStatus = unwrapResult.getHandshakeStatus();
+ Status unwrapResultStatus = unwrapResult.getStatus();
+
+ _underFlown = unwrapResultStatus == Status.BUFFER_UNDERFLOW;
+
+ if (_underFlown)
+ {
+ if (net_filled < 0)
+ closeInbound();
+ if (net_filled <= 0)
+ return net_filled;
+ }
+
+ switch (unwrapResultStatus)
+ {
+ case CLOSED:
+ {
+ switch (handshakeStatus)
+ {
+ case NOT_HANDSHAKING:
+ {
+ // We were not handshaking, so just tell the app we are closed
+ return -1;
+ }
+ case NEED_TASK:
+ {
+ _sslEngine.getDelegatedTask().run();
+ continue;
+ }
+ case NEED_WRAP:
+ {
+ // We need to send some handshake data (probably the close handshake).
+ // We return -1 so that the application can drive the close by flushing
+ // or shutting down the output.
+ return -1;
+ }
+ default:
+ {
+ throw new IllegalStateException();
+ }
+ }
+ }
+ case BUFFER_UNDERFLOW:
+ case OK:
+ {
+ if (unwrapHandshakeStatus == HandshakeStatus.FINISHED && !_handshaken)
+ {
+ _handshaken = true;
+ if (DEBUG)
+ LOG.debug("{} {} handshake completed", SslConnection.this,
+ _sslEngine.getUseClientMode() ? "client-side" : "resumed session server-side");
+ }
+
+ // Check whether renegotiation is allowed
+ if (_handshaken && handshakeStatus != HandshakeStatus.NOT_HANDSHAKING && !isRenegotiationAllowed())
+ {
+ if (DEBUG)
+ LOG.debug("{} renegotiation denied", SslConnection.this);
+ closeInbound();
+ return -1;
+ }
+
+ // If bytes were produced, don't bother with the handshake status;
+ // pass the decrypted data to the application, which will perform
+ // another call to fill() or flush().
+ if (unwrapResult.bytesProduced() > 0)
+ {
+ if (app_in == buffer)
+ return unwrapResult.bytesProduced();
+ return BufferUtil.append(buffer,_decryptedInput);
+ }
+
+ switch (handshakeStatus)
+ {
+ case NOT_HANDSHAKING:
+ {
+ if (_underFlown)
+ break decryption;
+ continue;
+ }
+ case NEED_TASK:
+ {
+ _sslEngine.getDelegatedTask().run();
+ continue;
+ }
+ case NEED_WRAP:
+ {
+ // If we are called from flush()
+ // return to let it do the wrapping.
+ if (buffer == __FLUSH_CALLED_FILL)
+ return 0;
+
+ _fillRequiresFlushToProgress = true;
+ flush(__FILL_CALLED_FLUSH);
+ if (BufferUtil.isEmpty(_encryptedOutput))
+ {
+ // The flush wrote all the encrypted bytes so continue to fill
+ _fillRequiresFlushToProgress = false;
+ continue;
+ }
+ else
+ {
+ // The flush did not complete, return from fill()
+ // and let the write completion mechanism to kick in.
+ return 0;
+ }
+ }
+ case NEED_UNWRAP:
+ {
+ if (_underFlown)
+ break decryption;
+ continue;
+ }
+ default:
+ {
+ throw new IllegalStateException();
+ }
+ }
+ }
+ default:
+ {
+ throw new IllegalStateException();
+ }
+ }
+ }
+ }
+ }
+ catch (Exception e)
+ {
+ getEndPoint().close();
+ throw e;
+ }
+ finally
+ {
+ // If we are handshaking, then wake up any waiting write as well as it may have been blocked on the read
+ if (_flushRequiresFillToProgress)
+ {
+ _flushRequiresFillToProgress = false;
+ getExecutor().execute(_runCompletWrite);
+ }
+
+ if (_encryptedInput != null && !_encryptedInput.hasRemaining())
+ {
+ _bufferPool.release(_encryptedInput);
+ _encryptedInput = null;
+ }
+ if (_decryptedInput != null && !_decryptedInput.hasRemaining())
+ {
+ _bufferPool.release(_decryptedInput);
+ _decryptedInput = null;
+ }
+ if (DEBUG)
+ LOG.debug("{} fill exit", SslConnection.this);
+ }
+ }
+
+ private void closeInbound()
+ {
+ try
+ {
+ _sslEngine.closeInbound();
+ }
+ catch (SSLException x)
+ {
+ LOG.ignore(x);
+ }
+ }
+
+ @Override
+ public synchronized boolean flush(ByteBuffer... appOuts) throws IOException
+ {
+ // The contract for flush does not require that all appOuts bytes are written
+ // or even that any appOut bytes are written! If the connection is write block
+ // or busy handshaking, then zero bytes may be taken from appOuts and this method
+ // will return 0 (even if some handshake bytes were flushed and filled).
+ // it is the applications responsibility to call flush again - either in a busy loop
+ // or better yet by using EndPoint#write to do the flushing.
+
+ if (DEBUG)
+ LOG.debug("{} flush enter {}", SslConnection.this, Arrays.toString(appOuts));
+ int consumed=0;
+ try
+ {
+ if (_cannotAcceptMoreAppDataToFlush)
+ {
+ if (_sslEngine.isOutboundDone())
+ throw new EofException(new ClosedChannelException());
+ return false;
+ }
+
+ // We will need a network buffer
+ if (_encryptedOutput == null)
+ _encryptedOutput = _bufferPool.acquire(_sslEngine.getSession().getPacketBufferSize(), _encryptedDirectBuffers);
+
+ while (true)
+ {
+ // We call sslEngine.wrap to try to take bytes from appOut buffers and encrypt them into the _netOut buffer
+ BufferUtil.compact(_encryptedOutput);
+ int pos = BufferUtil.flipToFill(_encryptedOutput);
+ SSLEngineResult wrapResult = _sslEngine.wrap(appOuts, _encryptedOutput);
+ if (DEBUG)
+ LOG.debug("{} wrap {}", SslConnection.this, wrapResult);
+ BufferUtil.flipToFlush(_encryptedOutput, pos);
+ if (wrapResult.bytesConsumed()>0)
+ consumed+=wrapResult.bytesConsumed();
+
+ boolean allConsumed=true;
+ // clear empty buffers to prevent position creeping up the buffer
+ for (ByteBuffer b : appOuts)
+ {
+ if (BufferUtil.isEmpty(b))
+ BufferUtil.clear(b);
+ else
+ allConsumed=false;
+ }
+
+ Status wrapResultStatus = wrapResult.getStatus();
+
+ // and deal with the results returned from the sslEngineWrap
+ switch (wrapResultStatus)
+ {
+ case CLOSED:
+ // The SSL engine has close, but there may be close handshake that needs to be written
+ if (BufferUtil.hasContent(_encryptedOutput))
+ {
+ _cannotAcceptMoreAppDataToFlush = true;
+ getEndPoint().flush(_encryptedOutput);
+ getEndPoint().shutdownOutput();
+ // If we failed to flush the close handshake then we will just pretend that
+ // the write has progressed normally and let a subsequent call to flush
+ // (or WriteFlusher#onIncompleteFlushed) to finish writing the close handshake.
+ // The caller will find out about the close on a subsequent flush or fill.
+ if (BufferUtil.hasContent(_encryptedOutput))
+ return false;
+ }
+ // otherwise we have written, and the caller will close the underlying connection
+ else
+ {
+ getEndPoint().shutdownOutput();
+ }
+ return allConsumed;
+
+ case BUFFER_UNDERFLOW:
+ throw new IllegalStateException();
+
+ default:
+ if (DEBUG)
+ LOG.debug("{} {} {}", this, wrapResultStatus, BufferUtil.toDetailString(_encryptedOutput));
+
+ if (wrapResult.getHandshakeStatus() == HandshakeStatus.FINISHED && !_handshaken)
+ {
+ _handshaken = true;
+ if (DEBUG)
+ LOG.debug("{} {} handshake completed", SslConnection.this, "server-side");
+ }
+
+ HandshakeStatus handshakeStatus = _sslEngine.getHandshakeStatus();
+
+ // Check whether renegotiation is allowed
+ if (_handshaken && handshakeStatus != HandshakeStatus.NOT_HANDSHAKING && !isRenegotiationAllowed())
+ {
+ if (DEBUG)
+ LOG.debug("{} renegotiation denied", SslConnection.this);
+ shutdownOutput();
+ return allConsumed;
+ }
+
+ // if we have net bytes, let's try to flush them
+ if (BufferUtil.hasContent(_encryptedOutput))
+ getEndPoint().flush(_encryptedOutput);
+
+ // But we also might have more to do for the handshaking state.
+ switch (handshakeStatus)
+ {
+ case NOT_HANDSHAKING:
+ // Return with the number of bytes consumed (which may be 0)
+ return allConsumed && BufferUtil.isEmpty(_encryptedOutput);
+
+ case NEED_TASK:
+ // run the task and continue
+ _sslEngine.getDelegatedTask().run();
+ continue;
+
+ case NEED_WRAP:
+ // Hey we just wrapped! Oh well who knows what the sslEngine is thinking, so continue and we will wrap again
+ continue;
+
+ case NEED_UNWRAP:
+ // Ah we need to fill some data so we can write.
+ // So if we were not called from fill and the app is not reading anyway
+ if (appOuts[0]!=__FILL_CALLED_FLUSH && !getFillInterest().isInterested())
+ {
+ // Tell the onFillable method that there might be a write to complete
+ _flushRequiresFillToProgress = true;
+ fill(__FLUSH_CALLED_FILL);
+ // Check if after the fill() we need to wrap again
+ if (handshakeStatus == HandshakeStatus.NEED_WRAP)
+ continue;
+ }
+ return allConsumed && BufferUtil.isEmpty(_encryptedOutput);
+
+ case FINISHED:
+ throw new IllegalStateException();
+ }
+ }
+ }
+ }
+ catch (Exception e)
+ {
+ getEndPoint().close();
+ throw e;
+ }
+ finally
+ {
+ if (DEBUG)
+ LOG.debug("{} flush exit, consumed {}", SslConnection.this, consumed);
+ releaseEncryptedOutputBuffer();
+ }
+ }
+
+ private void releaseEncryptedOutputBuffer()
+ {
+ if (!Thread.holdsLock(DecryptedEndPoint.this))
+ throw new IllegalStateException();
+ if (_encryptedOutput != null && !_encryptedOutput.hasRemaining())
+ {
+ _bufferPool.release(_encryptedOutput);
+ _encryptedOutput = null;
+ }
+ }
+
+ @Override
+ public void shutdownOutput()
+ {
+ boolean ishut = isInputShutdown();
+ boolean oshut = isOutputShutdown();
+ if (DEBUG)
+ LOG.debug("{} shutdownOutput: oshut={}, ishut={}", SslConnection.this, oshut, ishut);
+ if (ishut)
+ {
+ // Aggressively close, since inbound close alert has already been processed
+ // and the TLS specification allows to close the connection directly, which
+ // is what most other implementations expect: a FIN rather than a TLS close
+ // reply. If a TLS close reply is sent, most implementations send a RST.
+ getEndPoint().close();
+ }
+ else if (!oshut)
+ {
+ try
+ {
+ _sslEngine.closeOutbound();
+ flush(BufferUtil.EMPTY_BUFFER); // Send close handshake
+ SslConnection.this.fillInterested(); // seek reply FIN or RST or close handshake
+ }
+ catch (Exception e)
+ {
+ LOG.ignore(e);
+ getEndPoint().close();
+ }
+ }
+ }
+
+ @Override
+ public boolean isOutputShutdown()
+ {
+ return _sslEngine.isOutboundDone() || getEndPoint().isOutputShutdown();
+ }
+
+ @Override
+ public void close()
+ {
+ super.close();
+ // First send the TLS Close Alert, then the FIN
+ shutdownOutput();
+ getEndPoint().close();
+ }
+
+ @Override
+ public boolean isOpen()
+ {
+ return getEndPoint().isOpen();
+ }
+
+ @Override
+ public Object getTransport()
+ {
+ return getEndPoint();
+ }
+
+ @Override
+ public boolean isInputShutdown()
+ {
+ return _sslEngine.isInboundDone();
+ }
+
+ @Override
+ public String toString()
+ {
+ return super.toString()+"->"+getEndPoint().toString();
+ }
+ }
+}
projects / gigi.git / blobdiff