/*
* 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.coyote.http11;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.InetAddress;
import java.nio.channels.SelectionKey;
import javax.net.ssl.SSLEngine;
import org.apache.coyote.ActionCode;
import org.apache.coyote.RequestInfo;
import org.apache.coyote.http11.filters.BufferedInputFilter;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.ExceptionUtils;
import org.apache.tomcat.util.net.AbstractEndpoint.Handler.SocketState;
import org.apache.tomcat.util.net.NioChannel;
import org.apache.tomcat.util.net.NioEndpoint;
import org.apache.tomcat.util.net.NioEndpoint.KeyAttachment;
import org.apache.tomcat.util.net.SSLSupport;
import org.apache.tomcat.util.net.SecureNioChannel;
import org.apache.tomcat.util.net.SocketStatus;
import org.apache.tomcat.util.net.SocketWrapper;
/**
* Processes HTTP requests.
*
* @author Remy Maucherat
* @author Filip Hanik
*/
public class Http11NioProcessor extends AbstractHttp11Processor<NioChannel> {
private static final Log log = LogFactory.getLog(Http11NioProcessor.class);
@Override
protected Log getLog() {
return log;
}
/**
* SSL information.
*/
protected SSLSupport sslSupport;
// ----------------------------------------------------------- Constructors
public Http11NioProcessor(int maxHttpHeaderSize, NioEndpoint endpoint,
int maxTrailerSize) {
super(endpoint);
inputBuffer = new InternalNioInputBuffer(request, maxHttpHeaderSize);
request.setInputBuffer(inputBuffer);
outputBuffer = new InternalNioOutputBuffer(response, maxHttpHeaderSize);
response.setOutputBuffer(outputBuffer);
initializeFilters(maxTrailerSize);
}
// ----------------------------------------------------- Instance Variables
/**
* Input.
*/
protected InternalNioInputBuffer inputBuffer = null;
/**
* Output.
*/
protected InternalNioOutputBuffer outputBuffer = null;
/**
* Sendfile data.
*/
protected NioEndpoint.SendfileData sendfileData = null;
/**
* Closed flag, a Comet async thread can
* signal for this Nio processor to be closed and recycled instead
* of waiting for a timeout.
* Closed by HttpServletResponse.getWriter().close()
*/
protected boolean cometClose = false;
/**
* Socket associated with the current connection.
*/
protected SocketWrapper<NioChannel> socket = null;
// --------------------------------------------------------- Public Methods
/**
* Process pipelined HTTP requests using the specified input and output
* streams.
*
* @throws IOException error during an I/O operation
*/
@Override
public SocketState event(SocketStatus status)
throws IOException {
long soTimeout = endpoint.getSoTimeout();
RequestInfo rp = request.getRequestProcessor();
final NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.getSocket().getAttachment(false);
try {
rp.setStage(org.apache.coyote.Constants.STAGE_SERVICE);
error = !adapter.event(request, response, status);
if ( !error ) {
if (attach != null) {
attach.setComet(comet);
if (comet) {
Integer comettimeout = (Integer) request.getAttribute("org.apache.tomcat.comet.timeout");
if (comettimeout != null) attach.setTimeout(comettimeout.longValue());
} else {
//reset the timeout
if (keepAlive) {
attach.setTimeout(keepAliveTimeout);
} else {
attach.setTimeout(soTimeout);
}
}
}
}
} catch (InterruptedIOException e) {
error = true;
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
log.error(sm.getString("http11processor.request.process"), t);
// 500 - Internal Server Error
response.setStatus(500);
adapter.log(request, response, 0);
error = true;
}
rp.setStage(org.apache.coyote.Constants.STAGE_ENDED);
if (error) {
return SocketState.CLOSED;
} else if (!comet) {
return (keepAlive)?SocketState.OPEN:SocketState.CLOSED;
} else {
return SocketState.LONG;
}
}
@Override
protected void resetTimeouts() {
final NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.getSocket().getAttachment(false);
if (!error && attach != null &&
asyncStateMachine.isAsyncDispatching()) {
long soTimeout = endpoint.getSoTimeout();
//reset the timeout
if (keepAlive) {
attach.setTimeout(keepAliveTimeout);
} else {
attach.setTimeout(soTimeout);
}
}
}
@Override
protected boolean disableKeepAlive() {
return false;
}
@Override
protected void setRequestLineReadTimeout() throws IOException {
// socket.setTimeout()
// - timeout used by poller
// socket.getSocket().getIOChannel().socket().setSoTimeout()
// - timeout used for blocking reads
// When entering the processing loop there will always be data to read
// so no point changing timeouts at this point
// For the second and subsequent executions of the processing loop, a
// non-blocking read is used so again no need to set the timeouts
// Because NIO supports non-blocking reading of the request line and
// headers the timeouts need to be set when returning the socket to
// the poller rather than here.
// NO-OP
}
@Override
protected boolean handleIncompleteRequestLineRead() {
// Haven't finished reading the request so keep the socket
// open
openSocket = true;
// Check to see if we have read any of the request line yet
if (inputBuffer.getParsingRequestLinePhase() < 2) {
if (socket.getLastAccess() > -1 || keptAlive) {
// Haven't read the request line and have previously processed a
// request. Must be keep-alive. Make sure poller uses keepAlive.
socket.setTimeout(endpoint.getKeepAliveTimeout());
}
} else {
// Started to read request line. Need to keep processor
// associated with socket
readComplete = false;
// Make sure poller uses soTimeout from here onwards
socket.setTimeout(endpoint.getSoTimeout());
}
if (endpoint.isPaused()) {
// 503 - Service unavailable
response.setStatus(503);
adapter.log(request, response, 0);
error = true;
} else {
return true;
}
return false;
}
@Override
protected void setSocketTimeout(int timeout) throws IOException {
socket.getSocket().getIOChannel().socket().setSoTimeout(timeout);
}
@Override
protected void setCometTimeouts(SocketWrapper<NioChannel> socketWrapper) {
// Comet support
SelectionKey key = socketWrapper.getSocket().getIOChannel().keyFor(
socketWrapper.getSocket().getPoller().getSelector());
if (key != null) {
NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment) key.attachment();
if (attach != null) {
attach.setComet(comet);
if (comet) {
Integer comettimeout = (Integer) request.getAttribute("org.apache.tomcat.comet.timeout");
if (comettimeout != null) attach.setTimeout(comettimeout.longValue());
}
}
}
}
@Override
protected boolean breakKeepAliveLoop(
SocketWrapper<NioChannel> socketWrapper) {
// Do sendfile as needed: add socket to sendfile and end
if (sendfileData != null && !error) {
((KeyAttachment) socketWrapper).setSendfileData(sendfileData);
sendfileData.keepAlive = keepAlive;
SelectionKey key = socketWrapper.getSocket().getIOChannel().keyFor(
socketWrapper.getSocket().getPoller().getSelector());
//do the first write on this thread, might as well
openSocket = socketWrapper.getSocket().getPoller().processSendfile(key,
(KeyAttachment) socketWrapper, true, true);
return true;
}
return false;
}
@Override
public void recycleInternal() {
socket = null;
cometClose = false;
comet = false;
sendfileData = null;
}
// ----------------------------------------------------- ActionHook Methods
/**
* Send an action to the connector.
*
* @param actionCode Type of the action
* @param param Action parameter
*/
@Override
public void actionInternal(ActionCode actionCode, Object param) {
if (actionCode == ActionCode.CLOSE) {
// Close
// End the processing of the current request, and stop any further
// transactions with the client
comet = false;
cometClose = true;
SelectionKey key = socket.getSocket().getIOChannel().keyFor(socket.getSocket().getPoller().getSelector());
if ( key != null ) {
NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment) key.attachment();
if ( attach!=null && attach.getComet()) {
//if this is a comet connection
//then execute the connection closure at the next selector loop
//request.getAttributes().remove("org.apache.tomcat.comet.timeout");
//attach.setTimeout(5000); //force a cleanup in 5 seconds
//attach.setError(true); //this has caused concurrency errors
}
}
try {
outputBuffer.endRequest();
} catch (IOException e) {
// Set error flag
error = true;
}
} else if (actionCode == ActionCode.REQ_HOST_ADDR_ATTRIBUTE) {
// Get remote host address
if ((remoteAddr == null) && (socket != null)) {
InetAddress inetAddr = socket.getSocket().getIOChannel().socket().getInetAddress();
if (inetAddr != null) {
remoteAddr = inetAddr.getHostAddress();
}
}
request.remoteAddr().setString(remoteAddr);
} else if (actionCode == ActionCode.REQ_LOCAL_NAME_ATTRIBUTE) {
// Get local host name
if ((localName == null) && (socket != null)) {
InetAddress inetAddr = socket.getSocket().getIOChannel().socket().getLocalAddress();
if (inetAddr != null) {
localName = inetAddr.getHostName();
}
}
request.localName().setString(localName);
} else if (actionCode == ActionCode.REQ_HOST_ATTRIBUTE) {
// Get remote host name
if ((remoteHost == null) && (socket != null)) {
InetAddress inetAddr = socket.getSocket().getIOChannel().socket().getInetAddress();
if (inetAddr != null) {
remoteHost = inetAddr.getHostName();
}
if(remoteHost == null) {
if(remoteAddr != null) {
remoteHost = remoteAddr;
} else { // all we can do is punt
request.remoteHost().recycle();
}
}
}
request.remoteHost().setString(remoteHost);
} else if (actionCode == ActionCode.REQ_LOCAL_ADDR_ATTRIBUTE) {
if (localAddr == null)
localAddr = socket.getSocket().getIOChannel().socket().getLocalAddress().getHostAddress();
request.localAddr().setString(localAddr);
} else if (actionCode == ActionCode.REQ_REMOTEPORT_ATTRIBUTE) {
if ((remotePort == -1 ) && (socket !=null)) {
remotePort = socket.getSocket().getIOChannel().socket().getPort();
}
request.setRemotePort(remotePort);
} else if (actionCode == ActionCode.REQ_LOCALPORT_ATTRIBUTE) {
if ((localPort == -1 ) && (socket !=null)) {
localPort = socket.getSocket().getIOChannel().socket().getLocalPort();
}
request.setLocalPort(localPort);
} else if (actionCode == ActionCode.REQ_SSL_ATTRIBUTE ) {
try {
if (sslSupport != null) {
Object sslO = sslSupport.getCipherSuite();
if (sslO != null)
request.setAttribute
(SSLSupport.CIPHER_SUITE_KEY, sslO);
sslO = sslSupport.getPeerCertificateChain(false);
if (sslO != null)
request.setAttribute
(SSLSupport.CERTIFICATE_KEY, sslO);
sslO = sslSupport.getKeySize();
if (sslO != null)
request.setAttribute
(SSLSupport.KEY_SIZE_KEY, sslO);
sslO = sslSupport.getSessionId();
if (sslO != null)
request.setAttribute
(SSLSupport.SESSION_ID_KEY, sslO);
request.setAttribute(SSLSupport.SESSION_MGR, sslSupport);
}
} catch (Exception e) {
log.warn(sm.getString("http11processor.socket.ssl"), e);
}
} else if (actionCode == ActionCode.REQ_SSL_CERTIFICATE) {
if( sslSupport != null) {
/*
* Consume and buffer the request body, so that it does not
* interfere with the client's handshake messages
*/
InputFilter[] inputFilters = inputBuffer.getFilters();
((BufferedInputFilter) inputFilters[Constants.BUFFERED_FILTER])
.setLimit(maxSavePostSize);
inputBuffer.addActiveFilter
(inputFilters[Constants.BUFFERED_FILTER]);
SecureNioChannel sslChannel = (SecureNioChannel) socket.getSocket();
SSLEngine engine = sslChannel.getSslEngine();
if (!engine.getNeedClientAuth()) {
// Need to re-negotiate SSL connection
engine.setNeedClientAuth(true);
try {
sslChannel.rehandshake(endpoint.getSoTimeout());
sslSupport = ((NioEndpoint)endpoint).getHandler()
.getSslImplementation().getSSLSupport(
engine.getSession());
} catch (IOException ioe) {
log.warn(sm.getString("http11processor.socket.sslreneg",ioe));
}
}
try {
// use force=false since re-negotiation is handled above
// (and it is a NO-OP for NIO anyway)
Object sslO = sslSupport.getPeerCertificateChain(false);
if( sslO != null) {
request.setAttribute
(SSLSupport.CERTIFICATE_KEY, sslO);
}
} catch (Exception e) {
log.warn(sm.getString("http11processor.socket.ssl"), e);
}
}
} else if (actionCode == ActionCode.AVAILABLE) {
request.setAvailable(inputBuffer.available());
} else if (actionCode == ActionCode.COMET_BEGIN) {
comet = true;
} else if (actionCode == ActionCode.COMET_END) {
comet = false;
} else if (actionCode == ActionCode.COMET_CLOSE) {
if (socket==null || socket.getSocket().getAttachment(false)==null) return;
NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.getSocket().getAttachment(false);
attach.setCometOps(NioEndpoint.OP_CALLBACK);
//notify poller if not on a tomcat thread
RequestInfo rp = request.getRequestProcessor();
if ( rp.getStage() != org.apache.coyote.Constants.STAGE_SERVICE ) //async handling
socket.getSocket().getPoller().add(socket.getSocket());
} else if (actionCode == ActionCode.COMET_SETTIMEOUT) {
if (param==null) return;
if (socket==null || socket.getSocket().getAttachment(false)==null) return;
NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.getSocket().getAttachment(false);
long timeout = ((Long)param).longValue();
//if we are not piggy backing on a worker thread, set the timeout
RequestInfo rp = request.getRequestProcessor();
if ( rp.getStage() != org.apache.coyote.Constants.STAGE_SERVICE ) //async handling
attach.setTimeout(timeout);
} else if (actionCode == ActionCode.ASYNC_COMPLETE) {
if (asyncStateMachine.asyncComplete()) {
((NioEndpoint)endpoint).processSocket(this.socket.getSocket(),
SocketStatus.OPEN, true);
}
} else if (actionCode == ActionCode.ASYNC_SETTIMEOUT) {
if (param==null) return;
if (socket==null || socket.getSocket().getAttachment(false)==null) return;
NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.getSocket().getAttachment(false);
long timeout = ((Long)param).longValue();
//if we are not piggy backing on a worker thread, set the timeout
attach.setTimeout(timeout);
} else if (actionCode == ActionCode.ASYNC_DISPATCH) {
if (asyncStateMachine.asyncDispatch()) {
((NioEndpoint)endpoint).processSocket(this.socket.getSocket(),
SocketStatus.OPEN, true);
}
}
}
// ------------------------------------------------------ Protected Methods
@Override
protected void prepareRequestInternal() {
sendfileData = null;
}
@Override
protected boolean prepareSendfile(OutputFilter[] outputFilters) {
String fileName = (String) request.getAttribute(
"org.apache.tomcat.sendfile.filename");
if (fileName != null) {
// No entity body sent here
outputBuffer.addActiveFilter(outputFilters[Constants.VOID_FILTER]);
contentDelimitation = true;
sendfileData = new NioEndpoint.SendfileData();
sendfileData.fileName = fileName;
sendfileData.pos = ((Long) request.getAttribute(
"org.apache.tomcat.sendfile.start")).longValue();
sendfileData.length = ((Long) request.getAttribute(
"org.apache.tomcat.sendfile.end")).longValue() - sendfileData.pos;
return true;
}
return false;
}
@Override
protected void setSocketWrapper(SocketWrapper<NioChannel> socketWrapper) {
this.socket = socketWrapper;
}
@Override
protected AbstractInputBuffer<NioChannel> getInputBuffer() {
return inputBuffer;
}
@Override
protected AbstractOutputBuffer<NioChannel> getOutputBuffer() {
return outputBuffer;
}
/**
* Set the SSL information for this HTTP connection.
*/
public void setSslSupport(SSLSupport sslSupport) {
this.sslSupport = sslSupport;
}
}