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org.apache.coyote.http11.Http11NioProcessor Maven / Gradle / Ivy
/*
* 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 java.util.concurrent.atomic.AtomicBoolean;
import org.apache.coyote.ActionCode;
import org.apache.coyote.ActionHook;
import org.apache.coyote.Request;
import org.apache.coyote.RequestInfo;
import org.apache.coyote.Response;
import org.apache.coyote.http11.filters.BufferedInputFilter;
import org.apache.coyote.http11.filters.ChunkedInputFilter;
import org.apache.coyote.http11.filters.ChunkedOutputFilter;
import org.apache.coyote.http11.filters.GzipOutputFilter;
import org.apache.coyote.http11.filters.IdentityInputFilter;
import org.apache.coyote.http11.filters.IdentityOutputFilter;
import org.apache.coyote.http11.filters.SavedRequestInputFilter;
import org.apache.coyote.http11.filters.VoidInputFilter;
import org.apache.coyote.http11.filters.VoidOutputFilter;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.buf.Ascii;
import org.apache.tomcat.util.buf.ByteChunk;
import org.apache.tomcat.util.buf.HexUtils;
import org.apache.tomcat.util.buf.MessageBytes;
import org.apache.tomcat.util.http.FastHttpDateFormat;
import org.apache.tomcat.util.http.MimeHeaders;
import org.apache.tomcat.util.net.NioChannel;
import org.apache.tomcat.util.net.NioEndpoint;
import org.apache.tomcat.util.net.SSLSupport;
import org.apache.tomcat.util.net.SocketStatus;
import org.apache.tomcat.util.net.AbstractEndpoint.Handler.SocketState;
import org.apache.tomcat.util.net.NioEndpoint.KeyAttachment;
/**
* Processes HTTP requests.
*
* @author Remy Maucherat
* @author Filip Hanik
*/
public class Http11NioProcessor extends AbstractHttp11Processor implements ActionHook {
/**
* Logger.
*/
private static final Log log = LogFactory.getLog(Http11NioProcessor.class);
/**
* SSL information.
*/
protected SSLSupport sslSupport;
// ----------------------------------------------------------- Constructors
public Http11NioProcessor(int maxHttpHeaderSize, NioEndpoint endpoint) {
this.endpoint = endpoint;
request = new Request();
inputBuffer = new InternalNioInputBuffer(request, maxHttpHeaderSize);
request.setInputBuffer(inputBuffer);
response = new Response();
response.setHook(this);
outputBuffer = new InternalNioOutputBuffer(response, maxHttpHeaderSize);
response.setOutputBuffer(outputBuffer);
request.setResponse(response);
ssl = endpoint.isSSLEnabled();
initializeFilters();
// Cause loading of HexUtils
HexUtils.load();
// Cause loading of FastHttpDateFormat
FastHttpDateFormat.getCurrentDate();
}
// ----------------------------------------------------- Instance Variables
/**
* Input.
*/
protected InternalNioInputBuffer inputBuffer = null;
/**
* Output.
*/
protected InternalNioOutputBuffer outputBuffer = null;
/**
* Sendfile data.
*/
protected NioEndpoint.SendfileData sendfileData = null;
/**
* Comet used.
*/
protected boolean comet = false;
/**
* 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;
/**
* Async used
*/
protected boolean async = false;
/**
* SSL enabled ?
*/
protected boolean ssl = false;
/**
* Socket associated with the current connection.
*/
protected NioChannel socket = null;
/**
* Associated endpoint.
*/
protected NioEndpoint endpoint;
// ------------------------------------------------------------- Properties
// --------------------------------------------------------- Public Methods
/**
* Add input or output filter.
*
* @param className class name of the filter
*/
protected void addFilter(String className) {
try {
Class clazz = Class.forName(className);
Object obj = clazz.newInstance();
if (obj instanceof InputFilter) {
inputBuffer.addFilter((InputFilter) obj);
} else if (obj instanceof OutputFilter) {
outputBuffer.addFilter((OutputFilter) obj);
} else {
log.warn(sm.getString("http11processor.filter.unknown", className));
}
} catch (Exception e) {
log.error(sm.getString("http11processor.filter.error", className), e);
}
}
/**
* Process pipelined HTTP requests using the specified input and output
* streams.
*
* @throws IOException error during an I/O operation
*/
public SocketState event(SocketStatus status)
throws IOException {
long soTimeout = endpoint.getSoTimeout();
int keepAliveTimeout = endpoint.getKeepAliveTimeout();
RequestInfo rp = request.getRequestProcessor();
final NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.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 && keepAliveTimeout>0) {
attach.setTimeout(keepAliveTimeout);
} else {
attach.setTimeout(soTimeout);
}
}
}
}
} catch (InterruptedIOException e) {
error = true;
} catch (Throwable t) {
log.error(sm.getString("http11processor.request.process"), t);
// 500 - Internal Server Error
response.setStatus(500);
error = true;
}
rp.setStage(org.apache.coyote.Constants.STAGE_ENDED);
if (error) {
recycle();
return SocketState.CLOSED;
} else if (!comet) {
recycle();
return (keepAlive)?SocketState.OPEN:SocketState.CLOSED;
} else {
return SocketState.LONG;
}
}
/**
* Process pipelined HTTP requests using the specified input and output
* streams.
*
* @throws IOException error during an I/O operation
*/
public SocketState asyncDispatch(SocketStatus status)
throws IOException {
long soTimeout = endpoint.getSoTimeout();
int keepAliveTimeout = endpoint.getKeepAliveTimeout();
RequestInfo rp = request.getRequestProcessor();
final NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.getAttachment(false);
try {
rp.setStage(org.apache.coyote.Constants.STAGE_SERVICE);
error = !adapter.asyncDispatch(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 && keepAliveTimeout>0) {
attach.setTimeout(keepAliveTimeout);
} else {
attach.setTimeout(soTimeout);
}
}
}
}
} catch (InterruptedIOException e) {
error = true;
} catch (Throwable t) {
log.error(sm.getString("http11processor.request.process"), t);
// 500 - Internal Server Error
response.setStatus(500);
error = true;
}
rp.setStage(org.apache.coyote.Constants.STAGE_ENDED);
if (error) {
recycle();
return SocketState.CLOSED;
} else if (!comet) {
recycle();
return (keepAlive)?SocketState.OPEN:SocketState.CLOSED;
} else {
return SocketState.LONG;
}
}
/**
* Process pipelined HTTP requests using the specified input and output
* streams.
*
* @throws IOException error during an I/O operation
*/
public SocketState process(NioChannel socket)
throws IOException {
RequestInfo rp = request.getRequestProcessor();
rp.setStage(org.apache.coyote.Constants.STAGE_PARSE);
// Setting up the socket
this.socket = socket;
inputBuffer.setSocket(socket);
outputBuffer.setSocket(socket);
inputBuffer.setSelectorPool(endpoint.getSelectorPool());
outputBuffer.setSelectorPool(endpoint.getSelectorPool());
// Error flag
error = false;
keepAlive = true;
comet = false;
async = false;
long soTimeout = endpoint.getSoTimeout();
int keepAliveTimeout = endpoint.getKeepAliveTimeout();
boolean keptAlive = false;
boolean openSocket = false;
boolean recycle = true;
final KeyAttachment ka = (KeyAttachment)socket.getAttachment(false);
while (!error && keepAlive && !comet && !async) {
//always default to our soTimeout
ka.setTimeout(soTimeout);
// Parsing the request header
try {
if( !disableUploadTimeout && keptAlive && soTimeout > 0 ) {
socket.getIOChannel().socket().setSoTimeout((int)soTimeout);
}
if (!inputBuffer.parseRequestLine(keptAlive)) {
//no data available yet, since we might have read part
//of the request line, we can't recycle the processor
openSocket = true;
recycle = false;
if (inputBuffer.getParsingRequestLinePhase()<2) {
//keep alive timeout here
if (keepAliveTimeout>0) ka.setTimeout(keepAliveTimeout);
}
break;
}
keptAlive = true;
if ( !inputBuffer.parseHeaders() ) {
//we've read part of the request, don't recycle it
//instead associate it with the socket
openSocket = true;
recycle = false;
break;
}
request.setStartTime(System.currentTimeMillis());
if (!disableUploadTimeout) { //only for body, not for request headers
socket.getIOChannel().socket().setSoTimeout(timeout);
}
} catch (IOException e) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.header.parse"), e);
}
error = true;
break;
} catch (Throwable t) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.header.parse"), t);
}
// 400 - Bad Request
response.setStatus(400);
error = true;
}
if (!error) {
// Setting up filters, and parse some request headers
rp.setStage(org.apache.coyote.Constants.STAGE_PREPARE);
try {
prepareRequest();
} catch (Throwable t) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.request.prepare"), t);
}
// 400 - Internal Server Error
response.setStatus(400);
error = true;
}
}
if (maxKeepAliveRequests == 1 )
keepAlive = false;
if (maxKeepAliveRequests > 0 && ka.decrementKeepAlive() <= 0)
keepAlive = false;
// Process the request in the adapter
if (!error) {
try {
rp.setStage(org.apache.coyote.Constants.STAGE_SERVICE);
adapter.service(request, response);
// Handle when the response was committed before a serious
// error occurred. Throwing a ServletException should both
// set the status to 500 and set the errorException.
// If we fail here, then the response is likely already
// committed, so we can't try and set headers.
if(keepAlive && !error) { // Avoid checking twice.
error = response.getErrorException() != null ||
statusDropsConnection(response.getStatus());
}
// Comet support
SelectionKey key = socket.getIOChannel().keyFor(socket.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());
}
}
}
} catch (InterruptedIOException e) {
error = true;
} catch (Throwable t) {
log.error(sm.getString("http11processor.request.process"), t);
// 500 - Internal Server Error
response.setStatus(500);
error = true;
}
}
// Finish the handling of the request
if (!comet && !async) {
// If we know we are closing the connection, don't drain input.
// This way uploading a 100GB file doesn't tie up the thread
// if the servlet has rejected it.
if(error)
inputBuffer.setSwallowInput(false);
endRequest();
}
// If there was an error, make sure the request is counted as
// and error, and update the statistics counter
if (error) {
response.setStatus(500);
}
request.updateCounters();
if (!comet && !async) {
// Next request
inputBuffer.nextRequest();
outputBuffer.nextRequest();
}
// Do sendfile as needed: add socket to sendfile and end
if (sendfileData != null && !error) {
ka.setSendfileData(sendfileData);
sendfileData.keepAlive = keepAlive;
SelectionKey key = socket.getIOChannel().keyFor(socket.getPoller().getSelector());
//do the first write on this thread, might as well
openSocket = socket.getPoller().processSendfile(key,ka,true,true);
break;
}
rp.setStage(org.apache.coyote.Constants.STAGE_KEEPALIVE);
}//while
rp.setStage(org.apache.coyote.Constants.STAGE_ENDED);
if (comet || async) {
if (error) {
recycle();
return SocketState.CLOSED;
} else {
return SocketState.LONG;
}
} else {
if ( recycle ) {
recycle();
}
//return (openSocket) ? (SocketState.OPEN) : SocketState.CLOSED;
return (openSocket) ? (recycle?SocketState.OPEN:SocketState.LONG) : SocketState.CLOSED;
}
}
public void endRequest() {
// Finish the handling of the request
try {
inputBuffer.endRequest();
} catch (IOException e) {
error = true;
} catch (Throwable t) {
log.error(sm.getString("http11processor.request.finish"), t);
// 500 - Internal Server Error
response.setStatus(500);
error = true;
}
try {
outputBuffer.endRequest();
} catch (IOException e) {
error = true;
} catch (Throwable t) {
log.error(sm.getString("http11processor.response.finish"), t);
error = true;
}
}
public void recycle() {
inputBuffer.recycle();
outputBuffer.recycle();
this.socket = null;
this.cometClose = false;
this.comet = false;
remoteAddr = null;
remoteHost = null;
localAddr = null;
localName = null;
remotePort = -1;
localPort = -1;
}
// ----------------------------------------------------- ActionHook Methods
/**
* Send an action to the connector.
*
* @param actionCode Type of the action
* @param param Action parameter
*/
public void action(ActionCode actionCode, Object param) {
if (actionCode == ActionCode.ACTION_COMMIT) {
// Commit current response
if (response.isCommitted())
return;
// Validate and write response headers
try {
prepareResponse();
outputBuffer.commit();
} catch (IOException e) {
// Set error flag
error = true;
}
} else if (actionCode == ActionCode.ACTION_ACK) {
// Acknowledge request
// Send a 100 status back if it makes sense (response not committed
// yet, and client specified an expectation for 100-continue)
if ((response.isCommitted()) || !expectation)
return;
inputBuffer.setSwallowInput(true);
try {
outputBuffer.sendAck();
} catch (IOException e) {
// Set error flag
error = true;
}
} else if (actionCode == ActionCode.ACTION_CLIENT_FLUSH) {
try {
outputBuffer.flush();
} catch (IOException e) {
// Set error flag
error = true;
response.setErrorException(e);
}
} else if (actionCode == ActionCode.ACTION_CLOSE) {
// Close
// End the processing of the current request, and stop any further
// transactions with the client
comet = false;
cometClose = true;
async = false;
SelectionKey key = socket.getIOChannel().keyFor(socket.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.ACTION_RESET) {
// Reset response
// Note: This must be called before the response is committed
outputBuffer.reset();
} else if (actionCode == ActionCode.ACTION_CUSTOM) {
// Do nothing
} else if (actionCode == ActionCode.ACTION_REQ_HOST_ADDR_ATTRIBUTE) {
// Get remote host address
if ((remoteAddr == null) && (socket != null)) {
InetAddress inetAddr = socket.getIOChannel().socket().getInetAddress();
if (inetAddr != null) {
remoteAddr = inetAddr.getHostAddress();
}
}
request.remoteAddr().setString(remoteAddr);
} else if (actionCode == ActionCode.ACTION_REQ_LOCAL_NAME_ATTRIBUTE) {
// Get local host name
if ((localName == null) && (socket != null)) {
InetAddress inetAddr = socket.getIOChannel().socket().getLocalAddress();
if (inetAddr != null) {
localName = inetAddr.getHostName();
}
}
request.localName().setString(localName);
} else if (actionCode == ActionCode.ACTION_REQ_HOST_ATTRIBUTE) {
// Get remote host name
if ((remoteHost == null) && (socket != null)) {
InetAddress inetAddr = socket.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.ACTION_REQ_LOCAL_ADDR_ATTRIBUTE) {
if (localAddr == null)
localAddr = socket.getIOChannel().socket().getLocalAddress().getHostAddress();
request.localAddr().setString(localAddr);
} else if (actionCode == ActionCode.ACTION_REQ_REMOTEPORT_ATTRIBUTE) {
if ((remotePort == -1 ) && (socket !=null)) {
remotePort = socket.getIOChannel().socket().getPort();
}
request.setRemotePort(remotePort);
} else if (actionCode == ActionCode.ACTION_REQ_LOCALPORT_ATTRIBUTE) {
if ((localPort == -1 ) && (socket !=null)) {
localPort = socket.getIOChannel().socket().getLocalPort();
}
request.setLocalPort(localPort);
} else if (actionCode == ActionCode.ACTION_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.ACTION_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]);
try {
Object sslO = sslSupport.getPeerCertificateChain(true);
if( sslO != null) {
request.setAttribute
(SSLSupport.CERTIFICATE_KEY, sslO);
}
} catch (Exception e) {
log.warn(sm.getString("http11processor.socket.ssl"), e);
}
}
} else if (actionCode == ActionCode.ACTION_REQ_SET_BODY_REPLAY) {
ByteChunk body = (ByteChunk) param;
InputFilter savedBody = new SavedRequestInputFilter(body);
savedBody.setRequest(request);
InternalNioInputBuffer internalBuffer = (InternalNioInputBuffer)
request.getInputBuffer();
internalBuffer.addActiveFilter(savedBody);
} else if (actionCode == ActionCode.ACTION_AVAILABLE) {
request.setAvailable(inputBuffer.available());
} else if (actionCode == ActionCode.ACTION_COMET_BEGIN) {
comet = true;
} else if (actionCode == ActionCode.ACTION_COMET_END) {
comet = false;
} else if (actionCode == ActionCode.ACTION_COMET_CLOSE) {
if (socket==null || socket.getAttachment(false)==null) return;
NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.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.getPoller().cometInterest(socket);
} else if (actionCode == ActionCode.ACTION_COMET_SETTIMEOUT) {
if (param==null) return;
if (socket==null || socket.getAttachment(false)==null) return;
NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.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.ACTION_ASYNC_START) {
//TODO SERVLET3 - async
async = true;
} else if (actionCode == ActionCode.ACTION_ASYNC_COMPLETE) {
//TODO SERVLET3 - async
AtomicBoolean dispatch = (AtomicBoolean)param;
RequestInfo rp = request.getRequestProcessor();
if ( rp.getStage() != org.apache.coyote.Constants.STAGE_SERVICE ) { //async handling
dispatch.set(true);
endpoint.processSocket(this.socket, SocketStatus.STOP, true);
} else {
dispatch.set(false);
}
} else if (actionCode == ActionCode.ACTION_ASYNC_SETTIMEOUT) {
//TODO SERVLET3 - async
if (param==null) return;
if (socket==null || socket.getAttachment(false)==null) return;
NioEndpoint.KeyAttachment attach = (NioEndpoint.KeyAttachment)socket.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.ACTION_ASYNC_DISPATCH) {
RequestInfo rp = request.getRequestProcessor();
AtomicBoolean dispatch = (AtomicBoolean)param;
if ( rp.getStage() != org.apache.coyote.Constants.STAGE_SERVICE ) {//async handling
endpoint.processSocket(this.socket, SocketStatus.OPEN, true);
dispatch.set(true);
} else {
dispatch.set(true);
}
}
}
// ------------------------------------------------------ Connector Methods
public SSLSupport getSslSupport() {
return sslSupport;
}
// ------------------------------------------------------ Protected Methods
/**
* After reading the request headers, we have to setup the request filters.
*/
protected void prepareRequest() {
http11 = true;
http09 = false;
contentDelimitation = false;
expectation = false;
sendfileData = null;
if (ssl) {
request.scheme().setString("https");
}
MessageBytes protocolMB = request.protocol();
if (protocolMB.equals(Constants.HTTP_11)) {
http11 = true;
protocolMB.setString(Constants.HTTP_11);
} else if (protocolMB.equals(Constants.HTTP_10)) {
http11 = false;
keepAlive = false;
protocolMB.setString(Constants.HTTP_10);
} else if (protocolMB.equals("")) {
// HTTP/0.9
http09 = true;
http11 = false;
keepAlive = false;
} else {
// Unsupported protocol
http11 = false;
error = true;
// Send 505; Unsupported HTTP version
response.setStatus(505);
}
MessageBytes methodMB = request.method();
if (methodMB.equals(Constants.GET)) {
methodMB.setString(Constants.GET);
} else if (methodMB.equals(Constants.POST)) {
methodMB.setString(Constants.POST);
}
MimeHeaders headers = request.getMimeHeaders();
// Check connection header
MessageBytes connectionValueMB = headers.getValue("connection");
if (connectionValueMB != null) {
ByteChunk connectionValueBC = connectionValueMB.getByteChunk();
if (findBytes(connectionValueBC, Constants.CLOSE_BYTES) != -1) {
keepAlive = false;
} else if (findBytes(connectionValueBC,
Constants.KEEPALIVE_BYTES) != -1) {
keepAlive = true;
}
}
MessageBytes expectMB = null;
if (http11)
expectMB = headers.getValue("expect");
if ((expectMB != null)
&& (expectMB.indexOfIgnoreCase("100-continue", 0) != -1)) {
inputBuffer.setSwallowInput(false);
expectation = true;
}
// Check user-agent header
if ((restrictedUserAgents != null) && ((http11) || (keepAlive))) {
MessageBytes userAgentValueMB = headers.getValue("user-agent");
// Check in the restricted list, and adjust the http11
// and keepAlive flags accordingly
if(userAgentValueMB != null) {
String userAgentValue = userAgentValueMB.toString();
for (int i = 0; i < restrictedUserAgents.length; i++) {
if (restrictedUserAgents[i].matcher(userAgentValue).matches()) {
http11 = false;
keepAlive = false;
break;
}
}
}
}
// Check for a full URI (including protocol://host:port/)
ByteChunk uriBC = request.requestURI().getByteChunk();
if (uriBC.startsWithIgnoreCase("http", 0)) {
int pos = uriBC.indexOf("://", 0, 3, 4);
int uriBCStart = uriBC.getStart();
int slashPos = -1;
if (pos != -1) {
byte[] uriB = uriBC.getBytes();
slashPos = uriBC.indexOf('/', pos + 3);
if (slashPos == -1) {
slashPos = uriBC.getLength();
// Set URI as "/"
request.requestURI().setBytes
(uriB, uriBCStart + pos + 1, 1);
} else {
request.requestURI().setBytes
(uriB, uriBCStart + slashPos,
uriBC.getLength() - slashPos);
}
MessageBytes hostMB = headers.setValue("host");
hostMB.setBytes(uriB, uriBCStart + pos + 3,
slashPos - pos - 3);
}
}
// Input filter setup
InputFilter[] inputFilters = inputBuffer.getFilters();
// Parse transfer-encoding header
MessageBytes transferEncodingValueMB = null;
if (http11)
transferEncodingValueMB = headers.getValue("transfer-encoding");
if (transferEncodingValueMB != null) {
String transferEncodingValue = transferEncodingValueMB.toString();
// Parse the comma separated list. "identity" codings are ignored
int startPos = 0;
int commaPos = transferEncodingValue.indexOf(',');
String encodingName = null;
while (commaPos != -1) {
encodingName = transferEncodingValue.substring
(startPos, commaPos).toLowerCase().trim();
if (!addInputFilter(inputFilters, encodingName)) {
// Unsupported transfer encoding
error = true;
// 501 - Unimplemented
response.setStatus(501);
}
startPos = commaPos + 1;
commaPos = transferEncodingValue.indexOf(',', startPos);
}
encodingName = transferEncodingValue.substring(startPos)
.toLowerCase().trim();
if (!addInputFilter(inputFilters, encodingName)) {
// Unsupported transfer encoding
error = true;
// 501 - Unimplemented
response.setStatus(501);
}
}
// Parse content-length header
long contentLength = request.getContentLengthLong();
if (contentLength >= 0 && !contentDelimitation) {
inputBuffer.addActiveFilter
(inputFilters[Constants.IDENTITY_FILTER]);
contentDelimitation = true;
}
MessageBytes valueMB = headers.getValue("host");
// Check host header
if (http11 && (valueMB == null)) {
error = true;
// 400 - Bad request
response.setStatus(400);
}
parseHost(valueMB);
if (!contentDelimitation) {
// If there's no content length
// (broken HTTP/1.0 or HTTP/1.1), assume
// the client is not broken and didn't send a body
inputBuffer.addActiveFilter
(inputFilters[Constants.VOID_FILTER]);
contentDelimitation = true;
}
// Advertise sendfile support through a request attribute
if (endpoint.getUseSendfile())
request.setAttribute("org.apache.tomcat.sendfile.support", Boolean.TRUE);
// Advertise comet support through a request attribute
request.setAttribute("org.apache.tomcat.comet.support", Boolean.TRUE);
// Advertise comet timeout support
request.setAttribute("org.apache.tomcat.comet.timeout.support", Boolean.TRUE);
}
/**
* Parse host.
*/
public void parseHost(MessageBytes valueMB) {
if (valueMB == null || valueMB.isNull()) {
// HTTP/1.0
// Default is what the socket tells us. Overridden if a host is
// found/parsed
request.setServerPort(endpoint.getPort());
return;
}
ByteChunk valueBC = valueMB.getByteChunk();
byte[] valueB = valueBC.getBytes();
int valueL = valueBC.getLength();
int valueS = valueBC.getStart();
int colonPos = -1;
if (hostNameC.length < valueL) {
hostNameC = new char[valueL];
}
boolean ipv6 = (valueB[valueS] == '[');
boolean bracketClosed = false;
for (int i = 0; i < valueL; i++) {
char b = (char) valueB[i + valueS];
hostNameC[i] = b;
if (b == ']') {
bracketClosed = true;
} else if (b == ':') {
if (!ipv6 || bracketClosed) {
colonPos = i;
break;
}
}
}
if (colonPos < 0) {
if (!ssl) {
// 80 - Default HTTP port
request.setServerPort(80);
} else {
// 443 - Default HTTPS port
request.setServerPort(443);
}
request.serverName().setChars(hostNameC, 0, valueL);
} else {
request.serverName().setChars(hostNameC, 0, colonPos);
int port = 0;
int mult = 1;
for (int i = valueL - 1; i > colonPos; i--) {
int charValue = HexUtils.getDec(valueB[i + valueS]);
if (charValue == -1) {
// Invalid character
error = true;
// 400 - Bad request
response.setStatus(400);
break;
}
port = port + (charValue * mult);
mult = 10 * mult;
}
request.setServerPort(port);
}
}
/**
* When committing the response, we have to validate the set of headers, as
* well as setup the response filters.
*/
protected void prepareResponse() throws IOException {
boolean entityBody = true;
contentDelimitation = false;
OutputFilter[] outputFilters = outputBuffer.getFilters();
if (http09 == true) {
// HTTP/0.9
outputBuffer.addActiveFilter
(outputFilters[Constants.IDENTITY_FILTER]);
return;
}
int statusCode = response.getStatus();
if ((statusCode == 204) || (statusCode == 205)
|| (statusCode == 304)) {
// No entity body
outputBuffer.addActiveFilter
(outputFilters[Constants.VOID_FILTER]);
entityBody = false;
contentDelimitation = true;
}
MessageBytes methodMB = request.method();
if (methodMB.equals("HEAD")) {
// No entity body
outputBuffer.addActiveFilter
(outputFilters[Constants.VOID_FILTER]);
contentDelimitation = true;
}
// Sendfile support
if (this.endpoint.getUseSendfile()) {
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;
}
}
// Check for compression
boolean useCompression = false;
if (entityBody && (compressionLevel > 0) && (sendfileData == null)) {
useCompression = isCompressable();
// Change content-length to -1 to force chunking
if (useCompression) {
response.setContentLength(-1);
}
}
MimeHeaders headers = response.getMimeHeaders();
if (!entityBody) {
response.setContentLength(-1);
} else {
String contentType = response.getContentType();
if (contentType != null) {
headers.setValue("Content-Type").setString(contentType);
}
String contentLanguage = response.getContentLanguage();
if (contentLanguage != null) {
headers.setValue("Content-Language")
.setString(contentLanguage);
}
}
long contentLength = response.getContentLengthLong();
if (contentLength != -1) {
headers.setValue("Content-Length").setLong(contentLength);
outputBuffer.addActiveFilter
(outputFilters[Constants.IDENTITY_FILTER]);
contentDelimitation = true;
} else {
if (entityBody && http11) {
outputBuffer.addActiveFilter
(outputFilters[Constants.CHUNKED_FILTER]);
contentDelimitation = true;
headers.addValue(Constants.TRANSFERENCODING).setString(Constants.CHUNKED);
} else {
outputBuffer.addActiveFilter
(outputFilters[Constants.IDENTITY_FILTER]);
}
}
if (useCompression) {
outputBuffer.addActiveFilter(outputFilters[Constants.GZIP_FILTER]);
headers.setValue("Content-Encoding").setString("gzip");
// Make Proxies happy via Vary (from mod_deflate)
MessageBytes vary = headers.getValue("Vary");
if (vary == null) {
// Add a new Vary header
headers.setValue("Vary").setString("Accept-Encoding");
} else if (vary.equals("*")) {
// No action required
} else {
// Merge into current header
headers.setValue("Vary").setString(
vary.getString() + ",Accept-Encoding");
}
}
// Add date header
headers.setValue("Date").setString(FastHttpDateFormat.getCurrentDate());
// FIXME: Add transfer encoding header
if ((entityBody) && (!contentDelimitation)) {
// Mark as close the connection after the request, and add the
// connection: close header
keepAlive = false;
}
// If we know that the request is bad this early, add the
// Connection: close header.
keepAlive = keepAlive && !statusDropsConnection(statusCode);
if (!keepAlive) {
headers.addValue(Constants.CONNECTION).setString(Constants.CLOSE);
} else if (!http11 && !error) {
headers.addValue(Constants.CONNECTION).setString(Constants.KEEPALIVE);
}
// Build the response header
outputBuffer.sendStatus();
// Add server header
if (server != null) {
// Always overrides anything the app might set
headers.setValue("Server").setString(server);
} else if (headers.getValue("Server") == null) {
// If app didn't set the header, use the default
outputBuffer.write(Constants.SERVER_BYTES);
}
int size = headers.size();
for (int i = 0; i < size; i++) {
outputBuffer.sendHeader(headers.getName(i), headers.getValue(i));
}
outputBuffer.endHeaders();
}
/**
* Initialize standard input and output filters.
*/
protected void initializeFilters() {
// Create and add the identity filters.
inputBuffer.addFilter(new IdentityInputFilter());
outputBuffer.addFilter(new IdentityOutputFilter());
// Create and add the chunked filters.
inputBuffer.addFilter(new ChunkedInputFilter());
outputBuffer.addFilter(new ChunkedOutputFilter());
// Create and add the void filters.
inputBuffer.addFilter(new VoidInputFilter());
outputBuffer.addFilter(new VoidOutputFilter());
// Create and add buffered input filter
inputBuffer.addFilter(new BufferedInputFilter());
// Create and add the chunked filters.
//inputBuffer.addFilter(new GzipInputFilter());
outputBuffer.addFilter(new GzipOutputFilter());
}
/**
* Add an input filter to the current request.
*
* @return false if the encoding was not found (which would mean it is
* unsupported)
*/
protected boolean addInputFilter(InputFilter[] inputFilters,
String encodingName) {
if (encodingName.equals("identity")) {
// Skip
} else if (encodingName.equals("chunked")) {
inputBuffer.addActiveFilter
(inputFilters[Constants.CHUNKED_FILTER]);
contentDelimitation = true;
} else {
for (int i = 2; i < inputFilters.length; i++) {
if (inputFilters[i].getEncodingName()
.toString().equals(encodingName)) {
inputBuffer.addActiveFilter(inputFilters[i]);
return true;
}
}
return false;
}
return true;
}
/**
* Specialized utility method: find a sequence of lower case bytes inside
* a ByteChunk.
*/
@Override
protected int findBytes(ByteChunk bc, byte[] b) {
byte first = b[0];
byte[] buff = bc.getBuffer();
int start = bc.getStart();
int end = bc.getEnd();
// Look for first char
int srcEnd = b.length;
for (int i = start; i <= (end - srcEnd); i++) {
if (Ascii.toLower(buff[i]) != first) continue;
// found first char, now look for a match
int myPos = i+1;
for (int srcPos = 1; srcPos < srcEnd; ) {
if (Ascii.toLower(buff[myPos++]) != b[srcPos++])
break;
if (srcPos == srcEnd) return i - start; // found it
}
}
return -1;
}
/**
* Determine if we must drop the connection because of the HTTP status
* code. Use the same list of codes as Apache/httpd.
*/
@Override
protected boolean statusDropsConnection(int status) {
return status == 400 /* SC_BAD_REQUEST */ ||
status == 408 /* SC_REQUEST_TIMEOUT */ ||
status == 411 /* SC_LENGTH_REQUIRED */ ||
status == 413 /* SC_REQUEST_ENTITY_TOO_LARGE */ ||
status == 414 /* SC_REQUEST_URI_TOO_LONG */ ||
status == 500 /* SC_INTERNAL_SERVER_ERROR */ ||
status == 503 /* SC_SERVICE_UNAVAILABLE */ ||
status == 501 /* SC_NOT_IMPLEMENTED */;
}
/**
* Set the SSL information for this HTTP connection.
*/
public void setSslSupport(SSLSupport sslSupport) {
this.sslSupport = sslSupport;
}
}
