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/*
* 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.ajp;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.InetAddress;
import java.nio.ByteBuffer;
import java.security.NoSuchProviderException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Iterator;
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpUpgradeHandler;
import org.apache.coyote.AbstractProcessor;
import org.apache.coyote.ActionCode;
import org.apache.coyote.AsyncContextCallback;
import org.apache.coyote.ByteBufferHolder;
import org.apache.coyote.InputBuffer;
import org.apache.coyote.OutputBuffer;
import org.apache.coyote.Request;
import org.apache.coyote.RequestInfo;
import org.apache.coyote.Response;
import org.apache.juli.logging.Log;
import org.apache.tomcat.util.ExceptionUtils;
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.HttpMessages;
import org.apache.tomcat.util.http.MimeHeaders;
import org.apache.tomcat.util.net.AbstractEndpoint;
import org.apache.tomcat.util.net.AbstractEndpoint.Handler.SocketState;
import org.apache.tomcat.util.net.DispatchType;
import org.apache.tomcat.util.net.SSLSupport;
import org.apache.tomcat.util.net.SocketStatus;
import org.apache.tomcat.util.net.SocketWrapper;
import org.apache.tomcat.util.res.StringManager;
/**
* Base class for AJP Processor implementations.
*/
public abstract class AbstractAjpProcessor extends AbstractProcessor {
protected abstract Log getLog();
/**
* The string manager for this package.
*/
protected static final StringManager sm =
StringManager.getManager(Constants.Package);
/**
* End message array.
*/
protected static final byte[] endMessageArray;
protected static final byte[] endAndCloseMessageArray;
/**
* Flush message array.
*/
protected static final byte[] flushMessageArray;
/**
* Pong message array.
*/
protected static final byte[] pongMessageArray;
static {
// Allocate the end message array
AjpMessage endMessage = new AjpMessage(16);
endMessage.reset();
endMessage.appendByte(Constants.JK_AJP13_END_RESPONSE);
endMessage.appendByte(1);
endMessage.end();
endMessageArray = new byte[endMessage.getLen()];
System.arraycopy(endMessage.getBuffer(), 0, endMessageArray, 0,
endMessage.getLen());
// Allocate the end and close message array
AjpMessage endAndCloseMessage = new AjpMessage(16);
endAndCloseMessage.reset();
endAndCloseMessage.appendByte(Constants.JK_AJP13_END_RESPONSE);
endAndCloseMessage.appendByte(0);
endAndCloseMessage.end();
endAndCloseMessageArray = new byte[endAndCloseMessage.getLen()];
System.arraycopy(endAndCloseMessage.getBuffer(), 0, endAndCloseMessageArray, 0,
endAndCloseMessage.getLen());
// Allocate the flush message array
AjpMessage flushMessage = new AjpMessage(16);
flushMessage.reset();
flushMessage.appendByte(Constants.JK_AJP13_SEND_BODY_CHUNK);
flushMessage.appendInt(0);
flushMessage.appendByte(0);
flushMessage.end();
flushMessageArray = new byte[flushMessage.getLen()];
System.arraycopy(flushMessage.getBuffer(), 0, flushMessageArray, 0,
flushMessage.getLen());
// Allocate the pong message array
AjpMessage pongMessage = new AjpMessage(16);
pongMessage.reset();
pongMessage.appendByte(Constants.JK_AJP13_CPONG_REPLY);
pongMessage.end();
pongMessageArray = new byte[pongMessage.getLen()];
System.arraycopy(pongMessage.getBuffer(), 0, pongMessageArray,
0, pongMessage.getLen());
}
// ----------------------------------------------------- Instance Variables
/**
* GetBody message array. Not static like the other message arrays since the
* message varies with packetSize and that can vary per connector.
*/
protected final byte[] getBodyMessageArray;
/**
* AJP packet size.
*/
private final int outputMaxChunkSize;
/**
* Header message. Note that this header is merely the one used during the
* processing of the first message of a "request", so it might not be a
* request header. It will stay unchanged during the processing of the whole
* request.
*/
protected final AjpMessage requestHeaderMessage;
/**
* Message used for response composition.
*/
protected final AjpMessage responseMessage;
/**
* Location of next write of the response message (used withnon-blocking
* writes when the message may not be written in a single write). Avalue of
* -1 indicates that no message has been written to the buffer.
*/
private int responseMsgPos = -1;
/**
* Body message.
*/
protected final AjpMessage bodyMessage;
/**
* Body message.
*/
protected final MessageBytes bodyBytes = MessageBytes.newInstance();
/**
* The max size of the buffered write buffer
*/
private int bufferedWriteSize = 64*1024; //64k default write buffer
/**
* For "non-blocking" writes use an external set of buffers. Although the
* API only allows one non-blocking write at a time, due to buffering and
* the possible need to write HTTP headers, there may be more than one write
* to the OutputBuffer.
*/
private final LinkedBlockingDeque bufferedWrites =
new LinkedBlockingDeque<>();
/**
* Error flag.
*/
protected boolean error = false;
/**
* Host name (used to avoid useless B2C conversion on the host name).
*/
protected char[] hostNameC = new char[0];
/**
* Temp message bytes used for processing.
*/
protected final MessageBytes tmpMB = MessageBytes.newInstance();
/**
* Byte chunk for certs.
*/
protected final MessageBytes certificates = MessageBytes.newInstance();
/**
* End of stream flag.
*/
protected boolean endOfStream = false;
/**
* Request body empty flag.
*/
protected boolean empty = true;
/**
* First read.
*/
protected boolean first = true;
/**
* Indicates that a 'get body chunk' message has been sent but the body
* chunk has not yet been received.
*/
private boolean waitingForBodyMessage = false;
/**
* Replay read.
*/
protected boolean replay = false;
/**
* Should any response body be swallowed and not sent to the client.
*/
private boolean swallowResponse = false;
/**
* Finished response.
*/
protected boolean finished = false;
/**
* Bytes written to client for the current request.
*/
protected long bytesWritten = 0;
// ------------------------------------------------------------ Constructor
public AbstractAjpProcessor(int packetSize, AbstractEndpoint endpoint) {
super(endpoint);
// Calculate maximum chunk size as packetSize may have been changed from
// the default (Constants.MAX_PACKET_SIZE)
this.outputMaxChunkSize =
Constants.MAX_SEND_SIZE + packetSize - Constants.MAX_PACKET_SIZE;
request.setInputBuffer(new SocketInputBuffer());
requestHeaderMessage = new AjpMessage(packetSize);
responseMessage = new AjpMessage(packetSize);
bodyMessage = new AjpMessage(packetSize);
// Set the getBody message buffer
AjpMessage getBodyMessage = new AjpMessage(16);
getBodyMessage.reset();
getBodyMessage.appendByte(Constants.JK_AJP13_GET_BODY_CHUNK);
// Adjust read size if packetSize != default (Constants.MAX_PACKET_SIZE)
getBodyMessage.appendInt(Constants.MAX_READ_SIZE + packetSize -
Constants.MAX_PACKET_SIZE);
getBodyMessage.end();
getBodyMessageArray = new byte[getBodyMessage.getLen()];
System.arraycopy(getBodyMessage.getBuffer(), 0, getBodyMessageArray,
0, getBodyMessage.getLen());
}
// ------------------------------------------------------------- Properties
/**
* The number of milliseconds Tomcat will wait for a subsequent request
* before closing the connection. The default is -1 which is an infinite
* timeout.
*/
protected int keepAliveTimeout = -1;
public int getKeepAliveTimeout() { return keepAliveTimeout; }
public void setKeepAliveTimeout(int timeout) { keepAliveTimeout = timeout; }
/**
* Use Tomcat authentication ?
*/
protected boolean tomcatAuthentication = true;
public boolean getTomcatAuthentication() { return tomcatAuthentication; }
public void setTomcatAuthentication(boolean tomcatAuthentication) {
this.tomcatAuthentication = tomcatAuthentication;
}
/**
* Required secret.
*/
protected String requiredSecret = null;
public void setRequiredSecret(String requiredSecret) {
this.requiredSecret = requiredSecret;
}
/**
* When client certificate information is presented in a form other than
* instances of {@link java.security.cert.X509Certificate} it needs to be
* converted before it can be used and this property controls which JSSE
* provider is used to perform the conversion. For example it is used with
* the AJP connectors, the HTTP APR connector and with the
* {@link org.apache.catalina.valves.SSLValve}. If not specified, the
* default provider will be used.
*/
protected String clientCertProvider = null;
public String getClientCertProvider() { return clientCertProvider; }
public void setClientCertProvider(String s) { this.clientCertProvider = s; }
// --------------------------------------------------------- Public Methods
/**
* Send an action to the connector.
*
* @param actionCode Type of the action
* @param param Action parameter
*/
@Override
public final void action(ActionCode actionCode, Object param) {
if (actionCode == ActionCode.CLOSE) {
// End the processing of the current request, and stop any further
// transactions with the client
try {
finish();
} catch (IOException e) {
// Set error flag
error = true;
}
} else if (actionCode == ActionCode.COMMIT) {
if (response.isCommitted())
return;
// Validate and write response headers
try {
prepareResponse();
} catch (IOException e) {
// Set error flag
error = true;
}
try {
flush(false);
} catch (IOException e) {
// Set error flag
error = true;
}
} else if (actionCode == ActionCode.ACK) {
// NO_OP for AJP
} else if (actionCode == ActionCode.CLIENT_FLUSH) {
if (!response.isCommitted()) {
// Validate and write response headers
try {
prepareResponse();
} catch (IOException e) {
// Set error flag
error = true;
return;
}
}
try {
flush(true);
} catch (IOException e) {
// Set error flag
error = true;
}
} else if (actionCode == ActionCode.IS_ERROR) {
((AtomicBoolean) param).set(error);
} else if (actionCode == ActionCode.DISABLE_SWALLOW_INPUT) {
// TODO: Do not swallow request input but
// make sure we are closing the connection
error = true;
} else if (actionCode == ActionCode.RESET) {
// NO-OP
} else if (actionCode == ActionCode.REQ_SSL_ATTRIBUTE ) {
if (!certificates.isNull()) {
ByteChunk certData = certificates.getByteChunk();
X509Certificate jsseCerts[] = null;
ByteArrayInputStream bais =
new ByteArrayInputStream(certData.getBytes(),
certData.getStart(),
certData.getLength());
// Fill the elements.
try {
CertificateFactory cf;
if (clientCertProvider == null) {
cf = CertificateFactory.getInstance("X.509");
} else {
cf = CertificateFactory.getInstance("X.509",
clientCertProvider);
}
while(bais.available() > 0) {
X509Certificate cert = (X509Certificate)
cf.generateCertificate(bais);
if(jsseCerts == null) {
jsseCerts = new X509Certificate[1];
jsseCerts[0] = cert;
} else {
X509Certificate [] temp = new X509Certificate[jsseCerts.length+1];
System.arraycopy(jsseCerts,0,temp,0,jsseCerts.length);
temp[jsseCerts.length] = cert;
jsseCerts = temp;
}
}
} catch (java.security.cert.CertificateException e) {
getLog().error(sm.getString("ajpprocessor.certs.fail"), e);
return;
} catch (NoSuchProviderException e) {
getLog().error(sm.getString("ajpprocessor.certs.fail"), e);
return;
}
request.setAttribute(SSLSupport.CERTIFICATE_KEY, jsseCerts);
}
} else if (actionCode == ActionCode.REQ_SSL_CERTIFICATE) {
// NO-OP. Can't force a new SSL handshake with the client when using
// AJP as the reverse proxy controls that connection.
} else if (actionCode == ActionCode.REQ_HOST_ATTRIBUTE) {
// Get remote host name using a DNS resolution
if (request.remoteHost().isNull()) {
try {
request.remoteHost().setString(InetAddress.getByName
(request.remoteAddr().toString()).getHostName());
} catch (IOException iex) {
// Ignore
}
}
} else if (actionCode == ActionCode.REQ_HOST_ADDR_ATTRIBUTE) {
// NO-OP
// Automatically populated during prepareRequest()
} else if (actionCode == ActionCode.REQ_LOCAL_NAME_ATTRIBUTE) {
// NO-OP
// Automatically populated during prepareRequest()
} else if (actionCode == ActionCode.REQ_LOCAL_ADDR_ATTRIBUTE) {
// Copy from local name for now, which should simply be an address
request.localAddr().setString(request.localName().toString());
} else if (actionCode == ActionCode.REQ_REMOTEPORT_ATTRIBUTE) {
// NO-OP
// This information is not available when using the AJP protocol
} else if (actionCode == ActionCode.REQ_LOCALPORT_ATTRIBUTE) {
// NO-OP
// Automatically populated during prepareRequest()
} else if (actionCode == ActionCode.REQ_SET_BODY_REPLAY) {
// Set the given bytes as the content
ByteChunk bc = (ByteChunk) param;
int length = bc.getLength();
bodyBytes.setBytes(bc.getBytes(), bc.getStart(), length);
request.setContentLength(length);
first = false;
empty = false;
replay = true;
endOfStream = false;
} else if (actionCode == ActionCode.ASYNC_START) {
asyncStateMachine.asyncStart((AsyncContextCallback) param);
// Async time out is based on SocketWrapper access time
getSocketWrapper().access();
} else if (actionCode == ActionCode.ASYNC_COMPLETE) {
socketWrapper.clearDispatches();
if (asyncStateMachine.asyncComplete()) {
endpoint.processSocket(socketWrapper, SocketStatus.OPEN_READ, true);
}
} else if (actionCode == ActionCode.ASYNC_DISPATCH) {
if (asyncStateMachine.asyncDispatch()) {
endpoint.processSocket(socketWrapper, SocketStatus.OPEN_READ, true);
}
} else if (actionCode == ActionCode.ASYNC_DISPATCHED) {
asyncStateMachine.asyncDispatched();
} else if (actionCode == ActionCode.ASYNC_SETTIMEOUT) {
if (param == null) return;
long timeout = ((Long)param).longValue();
socketWrapper.setTimeout(timeout);
} else if (actionCode == ActionCode.ASYNC_TIMEOUT) {
AtomicBoolean result = (AtomicBoolean) param;
result.set(asyncStateMachine.asyncTimeout());
} else if (actionCode == ActionCode.ASYNC_RUN) {
asyncStateMachine.asyncRun((Runnable) param);
} else if (actionCode == ActionCode.ASYNC_ERROR) {
asyncStateMachine.asyncError();
} else if (actionCode == ActionCode.ASYNC_IS_STARTED) {
((AtomicBoolean) param).set(asyncStateMachine.isAsyncStarted());
} else if (actionCode == ActionCode.ASYNC_IS_DISPATCHING) {
((AtomicBoolean) param).set(asyncStateMachine.isAsyncDispatching());
} else if (actionCode == ActionCode.ASYNC_IS_ASYNC) {
((AtomicBoolean) param).set(asyncStateMachine.isAsync());
} else if (actionCode == ActionCode.ASYNC_IS_TIMINGOUT) {
((AtomicBoolean) param).set(asyncStateMachine.isAsyncTimingOut());
} else if (actionCode == ActionCode.ASYNC_IS_ERROR) {
((AtomicBoolean) param).set(asyncStateMachine.isAsyncError());
} else if (actionCode == ActionCode.UPGRADE) {
// HTTP connections only. Unsupported for AJP.
throw new UnsupportedOperationException(
sm.getString("ajpprocessor.httpupgrade.notsupported"));
} else if (actionCode == ActionCode.COMET_BEGIN) {
// HTTP connections only. Unsupported for AJP.
throw new UnsupportedOperationException(
sm.getString("ajpprocessor.comet.notsupported"));
} else if (actionCode == ActionCode.COMET_END) {
// HTTP connections only. Unsupported for AJP.
throw new UnsupportedOperationException(
sm.getString("ajpprocessor.comet.notsupported"));
} else if (actionCode == ActionCode.COMET_CLOSE) {
// HTTP connections only. Unsupported for AJP.
throw new UnsupportedOperationException(
sm.getString("ajpprocessor.comet.notsupported"));
} else if (actionCode == ActionCode.COMET_SETTIMEOUT) {
// HTTP connections only. Unsupported for AJP.
throw new UnsupportedOperationException(
sm.getString("ajpprocessor.comet.notsupported"));
} else if (actionCode == ActionCode.AVAILABLE) {
if (available()) {
request.setAvailable(1);
} else {
request.setAvailable(0);
}
} else if (actionCode == ActionCode.NB_READ_INTEREST) {
if (!endOfStream) {
registerForEvent(true, false);
}
} else if (actionCode == ActionCode.NB_WRITE_INTEREST) {
AtomicBoolean isReady = (AtomicBoolean)param;
boolean result = bufferedWrites.size() == 0 && responseMsgPos == -1;
isReady.set(result);
if (!result) {
registerForEvent(false, true);
}
} else if (actionCode == ActionCode.REQUEST_BODY_FULLY_READ) {
AtomicBoolean result = (AtomicBoolean) param;
result.set(endOfStream);
} else if (actionCode == ActionCode.DISPATCH_READ) {
socketWrapper.addDispatch(DispatchType.NON_BLOCKING_READ);
} else if (actionCode == ActionCode.DISPATCH_WRITE) {
socketWrapper.addDispatch(DispatchType.NON_BLOCKING_WRITE);
}
}
@Override
public SocketState asyncDispatch(SocketStatus status) {
if (status == SocketStatus.OPEN_WRITE) {
try {
asyncStateMachine.asyncOperation();
try {
if (hasDataToWrite()) {
flushBufferedData();
if (hasDataToWrite()) {
// There is data to write but go via Response to
// maintain a consistent view of non-blocking state
response.checkRegisterForWrite(true);
return SocketState.LONG;
}
}
} catch (IOException x) {
if (getLog().isDebugEnabled()) {
getLog().debug("Unable to write async data.",x);
}
status = SocketStatus.ASYNC_WRITE_ERROR;
request.setAttribute(RequestDispatcher.ERROR_EXCEPTION, x);
}
} catch (IllegalStateException x) {
registerForEvent(false, true);
}
} else if (status == SocketStatus.OPEN_READ &&
request.getReadListener() != null) {
try {
if (available()) {
asyncStateMachine.asyncOperation();
}
} catch (IllegalStateException x) {
registerForEvent(true, false);
}
}
RequestInfo rp = request.getRequestProcessor();
try {
rp.setStage(org.apache.coyote.Constants.STAGE_SERVICE);
error = !getAdapter().asyncDispatch(request, response, status);
resetTimeouts();
} catch (InterruptedIOException e) {
error = true;
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
getLog().error(sm.getString("http11processor.request.process"), t);
error = true;
}
rp.setStage(org.apache.coyote.Constants.STAGE_ENDED);
if (isAsync()) {
if (error) {
request.updateCounters();
return SocketState.CLOSED;
} else {
return SocketState.LONG;
}
} else {
request.updateCounters();
if (error) {
return SocketState.CLOSED;
} else {
return SocketState.OPEN;
}
}
}
/**
* Process pipelined HTTP requests using the specified input and output
* streams.
*
* @throws IOException error during an I/O operation
*/
@Override
public SocketState process(SocketWrapper socket) throws IOException {
RequestInfo rp = request.getRequestProcessor();
rp.setStage(org.apache.coyote.Constants.STAGE_PARSE);
// Setting up the socket
this.socketWrapper = socket;
setupSocket(socket);
int soTimeout = endpoint.getSoTimeout();
boolean cping = false;
// Error flag
error = false;
boolean keptAlive = false;
while (!error && !endpoint.isPaused()) {
// Parsing the request header
try {
// Get first message of the request
if (!readMessage(requestHeaderMessage, !keptAlive)) {
break;
}
// Set back timeout if keep alive timeout is enabled
if (keepAliveTimeout > 0) {
setTimeout(socketWrapper, soTimeout);
}
// Check message type, process right away and break if
// not regular request processing
int type = requestHeaderMessage.getByte();
if (type == Constants.JK_AJP13_CPING_REQUEST) {
if (endpoint.isPaused()) {
recycle(true);
break;
}
cping = true;
try {
output(pongMessageArray, 0, pongMessageArray.length, true);
} catch (IOException e) {
error = true;
}
recycle(false);
continue;
} else if(type != Constants.JK_AJP13_FORWARD_REQUEST) {
// Unexpected packet type. Unread body packets should have
// been swallowed in finish().
if (getLog().isDebugEnabled()) {
getLog().debug("Unexpected message: " + type);
}
error = true;
break;
}
keptAlive = true;
request.setStartTime(System.currentTimeMillis());
} catch (IOException e) {
error = true;
break;
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
getLog().debug(sm.getString("ajpprocessor.header.error"), t);
// 400 - Bad Request
response.setStatus(400);
getAdapter().log(request, response, 0);
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) {
ExceptionUtils.handleThrowable(t);
getLog().debug(sm.getString("ajpprocessor.request.prepare"), t);
// 400 - Internal Server Error
response.setStatus(400);
getAdapter().log(request, response, 0);
error = true;
}
}
if (!error && !cping && endpoint.isPaused()) {
// 503 - Service unavailable
response.setStatus(503);
getAdapter().log(request, response, 0);
error = true;
}
cping = false;
// Process the request in the adapter
if (!error) {
try {
rp.setStage(org.apache.coyote.Constants.STAGE_SERVICE);
getAdapter().service(request, response);
} catch (InterruptedIOException e) {
error = true;
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
getLog().error(sm.getString("ajpprocessor.request.process"), t);
// 500 - Internal Server Error
response.setStatus(500);
getAdapter().log(request, response, 0);
error = true;
}
}
if (isAsync() && !error) {
break;
}
// Finish the response if not done yet
if (!finished) {
try {
finish();
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
error = true;
}
}
// 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();
rp.setStage(org.apache.coyote.Constants.STAGE_KEEPALIVE);
// Set keep alive timeout if enabled
if (keepAliveTimeout > 0) {
setTimeout(socketWrapper, keepAliveTimeout);
}
recycle(false);
}
rp.setStage(org.apache.coyote.Constants.STAGE_ENDED);
if (!error && !endpoint.isPaused()) {
if (isAsync()) {
return SocketState.LONG;
} else {
return SocketState.OPEN;
}
} else {
return SocketState.CLOSED;
}
}
@Override
public void setSslSupport(SSLSupport sslSupport) {
// Should never reach this code but in case we do...
throw new IllegalStateException(
sm.getString("ajpprocessor.ssl.notsupported"));
}
@Override
public SocketState event(SocketStatus status) throws IOException {
// Should never reach this code but in case we do...
throw new IOException(
sm.getString("ajpprocessor.comet.notsupported"));
}
@Override
public SocketState upgradeDispatch(SocketStatus status) throws IOException {
// Should never reach this code but in case we do...
throw new IOException(
sm.getString("ajpprocessor.httpupgrade.notsupported"));
}
@Override
public HttpUpgradeHandler getHttpUpgradeHandler() {
// Should never reach this code but in case we do...
throw new IllegalStateException(
sm.getString("ajpprocessor.httpupgrade.notsupported"));
}
/**
* Recycle the processor, ready for the next request which may be on the
* same connection or a different connection.
*
* @param socketClosing Indicates if the socket is about to be closed
* allowing the processor to perform any additional
* clean-up that may be required
*/
@Override
public void recycle(boolean socketClosing) {
asyncStateMachine.recycle();
// Recycle Request object
first = true;
endOfStream = false;
waitingForBodyMessage = false;
empty = true;
replay = false;
finished = false;
request.recycle();
response.recycle();
certificates.recycle();
swallowResponse = false;
bytesWritten = 0;
}
// ------------------------------------------------------ Protected Methods
// Methods called by asyncDispatch
/**
* Provides a mechanism for those connector implementations (currently only
* NIO) that need to reset timeouts from Async timeouts to standard HTTP
* timeouts once async processing completes.
*/
protected abstract void resetTimeouts();
// Methods called by prepareResponse()
protected abstract int output(byte[] src, int offset, int length,
boolean block) throws IOException;
// Methods called by process()
protected abstract void setupSocket(SocketWrapper socketWrapper)
throws IOException;
protected abstract void setTimeout(SocketWrapper socketWrapper,
int timeout) throws IOException;
// Methods used by readMessage
/**
* Read at least the specified amount of bytes, and place them
* in the input buffer. Note that if any data is available to read then this
* method will always block until at least the specified number of bytes
* have been read.
*
* @param buf Buffer to read data into
* @param pos Start position
* @param n The minimum number of bytes to read
* @param block If there is no data available to read when this method is
* called, should this call block until data becomes available?
* @return true if the requested number of bytes were read
* else false
* @throws IOException
*/
protected abstract boolean read(byte[] buf, int pos, int n, boolean block)
throws IOException;
// Methods used by SocketInputBuffer
/**
* Read an AJP body message. Used to read both the 'special' packet in ajp13
* and to receive the data after we send a GET_BODY packet.
*
* @param block If there is no data available to read when this method is
* called, should this call block until data becomes available?
*
* @return true if at least one body byte was read, otherwise
* false
*/
protected boolean receive(boolean block) throws IOException {
bodyMessage.reset();
if (!readMessage(bodyMessage, block)) {
return false;
}
waitingForBodyMessage = false;
// No data received.
if (bodyMessage.getLen() == 0) {
// just the header
return false;
}
int blen = bodyMessage.peekInt();
if (blen == 0) {
return false;
}
bodyMessage.getBodyBytes(bodyBytes);
empty = false;
return true;
}
/**
* Read an AJP message.
*
* @param message The message to populate
* @param block If there is no data available to read when this method is
* called, should this call block until data becomes available?
* @return true if the message has been read, false if no data was read
*
* @throws IOException any other failure, including incomplete reads
*/
protected boolean readMessage(AjpMessage message, boolean block)
throws IOException {
byte[] buf = message.getBuffer();
int headerLength = message.getHeaderLength();
if (!read(buf, 0, headerLength, block)) {
return false;
}
int messageLength = message.processHeader(true);
if (messageLength < 0) {
// Invalid AJP header signature
throw new IOException(sm.getString("ajpmessage.invalidLength",
Integer.valueOf(messageLength)));
}
else if (messageLength == 0) {
// Zero length message.
return true;
}
else {
if (messageLength > message.getBuffer().length) {
// Message too long for the buffer
// Need to trigger a 400 response
throw new IllegalArgumentException(sm.getString(
"ajpprocessor.header.tooLong",
Integer.valueOf(messageLength),
Integer.valueOf(buf.length)));
}
read(buf, headerLength, messageLength, true);
return true;
}
}
@Override
public final boolean isComet() {
// AJP does not support Comet
return false;
}
@Override
public final boolean isUpgrade() {
// AJP does not support HTTP upgrade
return false;
}
/**
* Get more request body data from the web server and store it in the
* internal buffer.
*
* @return true if there is more data, false if not.
*/
protected boolean refillReadBuffer(boolean block) throws IOException {
// When using replay (e.g. after FORM auth) all the data to read has
// been buffered so there is no opportunity to refill the buffer.
if (replay) {
endOfStream = true; // we've read everything there is
}
if (endOfStream) {
return false;
}
if (first) {
first = false;
long contentLength = request.getContentLengthLong();
// - When content length > 0, AJP sends the first body message
// automatically.
// - When content length == 0, AJP does not send a body message.
// - When content length is unknown, AJP does not send the first
// body message automatically.
if (contentLength > 0) {
waitingForBodyMessage = true;
} else if (contentLength == 0) {
endOfStream = true;
return false;
}
}
// Request more data immediately
if (!waitingForBodyMessage) {
output(getBodyMessageArray, 0, getBodyMessageArray.length, true);
waitingForBodyMessage = true;
}
boolean moreData = receive(block);
if (!moreData && !waitingForBodyMessage) {
endOfStream = true;
}
return moreData;
}
/**
* After reading the request headers, we have to setup the request filters.
*/
protected void prepareRequest() {
// Translate the HTTP method code to a String.
byte methodCode = requestHeaderMessage.getByte();
if (methodCode != Constants.SC_M_JK_STORED) {
String methodName = Constants.getMethodForCode(methodCode - 1);
request.method().setString(methodName);
}
requestHeaderMessage.getBytes(request.protocol());
requestHeaderMessage.getBytes(request.requestURI());
requestHeaderMessage.getBytes(request.remoteAddr());
requestHeaderMessage.getBytes(request.remoteHost());
requestHeaderMessage.getBytes(request.localName());
request.setLocalPort(requestHeaderMessage.getInt());
boolean isSSL = requestHeaderMessage.getByte() != 0;
if (isSSL) {
request.scheme().setString("https");
}
// Decode headers
MimeHeaders headers = request.getMimeHeaders();
// Set this every time in case limit has been changed via JMX
headers.setLimit(endpoint.getMaxHeaderCount());
boolean contentLengthSet = false;
int hCount = requestHeaderMessage.getInt();
for(int i = 0 ; i < hCount ; i++) {
String hName = null;
// Header names are encoded as either an integer code starting
// with 0xA0, or as a normal string (in which case the first
// two bytes are the length).
int isc = requestHeaderMessage.peekInt();
int hId = isc & 0xFF;
MessageBytes vMB = null;
isc &= 0xFF00;
if(0xA000 == isc) {
requestHeaderMessage.getInt(); // To advance the read position
hName = Constants.getHeaderForCode(hId - 1);
vMB = headers.addValue(hName);
} else {
// reset hId -- if the header currently being read
// happens to be 7 or 8 bytes long, the code below
// will think it's the content-type header or the
// content-length header - SC_REQ_CONTENT_TYPE=7,
// SC_REQ_CONTENT_LENGTH=8 - leading to unexpected
// behaviour. see bug 5861 for more information.
hId = -1;
requestHeaderMessage.getBytes(tmpMB);
ByteChunk bc = tmpMB.getByteChunk();
vMB = headers.addValue(bc.getBuffer(),
bc.getStart(), bc.getLength());
}
requestHeaderMessage.getBytes(vMB);
if (hId == Constants.SC_REQ_CONTENT_LENGTH ||
(hId == -1 && tmpMB.equalsIgnoreCase("Content-Length"))) {
long cl = vMB.getLong();
if (contentLengthSet) {
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
error = true;
} else {
contentLengthSet = true;
// Set the content-length header for the request
request.setContentLength(cl);
}
} else if (hId == Constants.SC_REQ_CONTENT_TYPE ||
(hId == -1 && tmpMB.equalsIgnoreCase("Content-Type"))) {
// just read the content-type header, so set it
ByteChunk bchunk = vMB.getByteChunk();
request.contentType().setBytes(bchunk.getBytes(),
bchunk.getOffset(),
bchunk.getLength());
}
}
// Decode extra attributes
boolean secret = false;
byte attributeCode;
while ((attributeCode = requestHeaderMessage.getByte())
!= Constants.SC_A_ARE_DONE) {
switch (attributeCode) {
case Constants.SC_A_REQ_ATTRIBUTE :
requestHeaderMessage.getBytes(tmpMB);
String n = tmpMB.toString();
requestHeaderMessage.getBytes(tmpMB);
String v = tmpMB.toString();
/*
* AJP13 misses to forward the remotePort.
* Allow the AJP connector to add this info via
* a private request attribute.
* We will accept the forwarded data as the remote port,
* and remove it from the public list of request attributes.
*/
if(n.equals(Constants.SC_A_REQ_REMOTE_PORT)) {
try {
request.setRemotePort(Integer.parseInt(v));
} catch (NumberFormatException nfe) {
// Ignore invalid value
}
} else {
request.setAttribute(n, v );
}
break;
case Constants.SC_A_CONTEXT :
requestHeaderMessage.getBytes(tmpMB);
// nothing
break;
case Constants.SC_A_SERVLET_PATH :
requestHeaderMessage.getBytes(tmpMB);
// nothing
break;
case Constants.SC_A_REMOTE_USER :
if (tomcatAuthentication) {
// ignore server
requestHeaderMessage.getBytes(tmpMB);
} else {
requestHeaderMessage.getBytes(request.getRemoteUser());
}
break;
case Constants.SC_A_AUTH_TYPE :
if (tomcatAuthentication) {
// ignore server
requestHeaderMessage.getBytes(tmpMB);
} else {
requestHeaderMessage.getBytes(request.getAuthType());
}
break;
case Constants.SC_A_QUERY_STRING :
requestHeaderMessage.getBytes(request.queryString());
break;
case Constants.SC_A_JVM_ROUTE :
requestHeaderMessage.getBytes(request.instanceId());
break;
case Constants.SC_A_SSL_CERT :
// SSL certificate extraction is lazy, moved to JkCoyoteHandler
requestHeaderMessage.getBytes(certificates);
break;
case Constants.SC_A_SSL_CIPHER :
requestHeaderMessage.getBytes(tmpMB);
request.setAttribute(SSLSupport.CIPHER_SUITE_KEY,
tmpMB.toString());
break;
case Constants.SC_A_SSL_SESSION :
requestHeaderMessage.getBytes(tmpMB);
request.setAttribute(SSLSupport.SESSION_ID_KEY,
tmpMB.toString());
break;
case Constants.SC_A_SSL_KEY_SIZE :
request.setAttribute(SSLSupport.KEY_SIZE_KEY,
Integer.valueOf(requestHeaderMessage.getInt()));
break;
case Constants.SC_A_STORED_METHOD:
requestHeaderMessage.getBytes(request.method());
break;
case Constants.SC_A_SECRET:
requestHeaderMessage.getBytes(tmpMB);
if (requiredSecret != null) {
secret = true;
if (!tmpMB.equals(requiredSecret)) {
response.setStatus(403);
error = true;
}
}
break;
default:
// Ignore unknown attribute for backward compatibility
break;
}
}
// Check if secret was submitted if required
if ((requiredSecret != null) && !secret) {
response.setStatus(403);
error = true;
}
// 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);
}
}
MessageBytes valueMB = request.getMimeHeaders().getValue("host");
parseHost(valueMB);
if (error) {
getAdapter().log(request, response, 0);
}
}
/**
* Parse host.
*/
protected void parseHost(MessageBytes valueMB) {
if (valueMB == null || valueMB.isNull()) {
// HTTP/1.0
request.setServerPort(request.getLocalPort());
try {
request.serverName().duplicate(request.localName());
} catch (IOException e) {
response.setStatus(400);
error = true;
}
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 (request.scheme().equalsIgnoreCase("https")) {
// 443 - Default HTTPS port
request.setServerPort(443);
} else {
// 80 - Default HTTTP port
request.setServerPort(80);
}
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 {
response.setCommitted(true);
responseMsgPos = -1;
responseMessage.reset();
responseMessage.appendByte(Constants.JK_AJP13_SEND_HEADERS);
// Responses with certain status codes are not permitted to include a
// response body.
int statusCode = response.getStatus();
if (statusCode < 200 || statusCode == 204 || statusCode == 205 ||
statusCode == 304) {
// No entity body
swallowResponse = true;
}
// Responses to HEAD requests are not permitted to include a response
// body.
MessageBytes methodMB = request.method();
if (methodMB.equals("HEAD")) {
// No entity body
swallowResponse = true;
}
// HTTP header contents
responseMessage.appendInt(statusCode);
String message = null;
if (org.apache.coyote.Constants.USE_CUSTOM_STATUS_MSG_IN_HEADER &&
HttpMessages.isSafeInHttpHeader(response.getMessage())) {
message = response.getMessage();
}
if (message == null){
message = HttpMessages.getInstance(
response.getLocale()).getMessage(response.getStatus());
}
if (message == null) {
// mod_jk + httpd 2.x fails with a null status message - bug 45026
message = Integer.toString(response.getStatus());
}
tmpMB.setString(message);
responseMessage.appendBytes(tmpMB);
// Special headers
MimeHeaders headers = response.getMimeHeaders();
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 >= 0) {
headers.setValue("Content-Length").setLong(contentLength);
}
// Other headers
int numHeaders = headers.size();
responseMessage.appendInt(numHeaders);
for (int i = 0; i < numHeaders; i++) {
MessageBytes hN = headers.getName(i);
int hC = Constants.getResponseAjpIndex(hN.toString());
if (hC > 0) {
responseMessage.appendInt(hC);
}
else {
responseMessage.appendBytes(hN);
}
MessageBytes hV=headers.getValue(i);
responseMessage.appendBytes(hV);
}
// Write to buffer
responseMessage.end();
output(responseMessage.getBuffer(), 0, responseMessage.getLen(), true);
}
/**
* Callback to write data from the buffer.
*/
protected void flush(boolean explicit) throws IOException {
// Calling code should ensure that there is no data in the buffers for
// non-blocking writes.
// TODO Validate the assertion above
if (explicit && !finished) {
// Send the flush message
output(flushMessageArray, 0, flushMessageArray.length, true);
}
}
/**
* Finish AJP response.
*/
protected void finish() throws IOException {
if (!response.isCommitted()) {
// Validate and write response headers
try {
prepareResponse();
} catch (IOException e) {
// Set error flag
error = true;
}
}
if (finished)
return;
finished = true;
// Swallow the unread body packet if present
if (waitingForBodyMessage || first && request.getContentLengthLong() > 0) {
refillReadBuffer(true);
}
// Add the end message
if (error) {
output(endAndCloseMessageArray, 0, endAndCloseMessageArray.length, true);
} else {
output(endMessageArray, 0, endMessageArray.length, true);
}
}
private boolean available() {
if (endOfStream) {
return false;
}
if (empty) {
try {
refillReadBuffer(false);
} catch (IOException timeout) {
// Not ideal. This will indicate that data is available
// which should trigger a read which in turn will trigger
// another IOException and that one can be thrown.
return true;
}
}
return !empty;
}
private void writeData(ByteChunk chunk) throws IOException {
// Prevent timeout
socketWrapper.access();
boolean blocking = (response.getWriteListener() == null);
if (!blocking) {
flushBufferedData();
}
int len = chunk.getLength();
int off = 0;
// Write this chunk
while (responseMsgPos == -1 && len > 0) {
int thisTime = len;
if (thisTime > outputMaxChunkSize) {
thisTime = outputMaxChunkSize;
}
responseMessage.reset();
responseMessage.appendByte(Constants.JK_AJP13_SEND_BODY_CHUNK);
responseMessage.appendBytes(chunk.getBytes(), chunk.getOffset() + off, thisTime);
responseMessage.end();
writeResponseMessage(blocking);
len -= thisTime;
off += thisTime;
}
bytesWritten += off;
if (len > 0) {
// Add this chunk to the buffer
addToBuffers(chunk.getBuffer(), off, len);
}
}
private void addToBuffers(byte[] buf, int offset, int length) {
ByteBufferHolder holder = bufferedWrites.peekLast();
if (holder == null || holder.isFlipped() || holder.getBuf().remaining() < length) {
ByteBuffer buffer = ByteBuffer.allocate(Math.max(bufferedWriteSize,length));
holder = new ByteBufferHolder(buffer, false);
bufferedWrites.add(holder);
}
holder.getBuf().put(buf, offset, length);
}
private boolean hasDataToWrite() {
return responseMsgPos != -1 || bufferedWrites.size() > 0;
}
private void flushBufferedData() throws IOException {
if (responseMsgPos > -1) {
// Must be using non-blocking IO
// Partially written response message. Try and complete it.
writeResponseMessage(false);
}
while (responseMsgPos == -1 && bufferedWrites.size() > 0) {
// Try and write any remaining buffer data
Iterator holders = bufferedWrites.iterator();
ByteBufferHolder holder = holders.next();
holder.flip();
ByteBuffer buffer = holder.getBuf();
int initialBufferSize = buffer.remaining();
while (responseMsgPos == -1 && buffer.remaining() > 0) {
transferToResponseMsg(buffer);
writeResponseMessage(false);
}
bytesWritten += (initialBufferSize - buffer.remaining());
if (buffer.remaining() == 0) {
holders.remove();
}
}
}
private void transferToResponseMsg(ByteBuffer buffer) {
int thisTime = buffer.remaining();
if (thisTime > outputMaxChunkSize) {
thisTime = outputMaxChunkSize;
}
responseMessage.reset();
responseMessage.appendByte(Constants.JK_AJP13_SEND_BODY_CHUNK);
buffer.get(responseMessage.getBuffer(), responseMessage.pos, thisTime);
responseMessage.end();
}
private void writeResponseMessage(boolean block) throws IOException {
int len = responseMessage.getLen();
int written = 1;
if (responseMsgPos == -1) {
// New message. Advance the write position to the beginning
responseMsgPos = 0;
}
while (written > 0 && responseMsgPos < len) {
written = output(
responseMessage.getBuffer(), responseMsgPos, len, block);
responseMsgPos += written;
}
// Message fully written, reset the position for a new message.
if (responseMsgPos == len) {
responseMsgPos = -1;
}
}
// ------------------------------------- InputStreamInputBuffer Inner Class
/**
* This class is an input buffer which will read its data from an input
* stream.
*/
protected class SocketInputBuffer implements InputBuffer {
/**
* Read bytes into the specified chunk.
*/
@Override
public int doRead(ByteChunk chunk, Request req) throws IOException {
if (endOfStream) {
return -1;
}
if (empty) {
if (!refillReadBuffer(true)) {
return -1;
}
}
ByteChunk bc = bodyBytes.getByteChunk();
chunk.setBytes(bc.getBuffer(), bc.getStart(), bc.getLength());
empty = true;
return chunk.getLength();
}
}
// ----------------------------------- OutputStreamOutputBuffer Inner Class
/**
* This class is an output buffer which will write data to an output
* stream.
*/
protected class SocketOutputBuffer implements OutputBuffer {
/**
* Write chunk.
*/
@Override
public int doWrite(ByteChunk chunk, Response res) throws IOException {
if (!response.isCommitted()) {
// Validate and write response headers
try {
prepareResponse();
} catch (IOException e) {
// Set error flag
error = true;
}
}
if (!swallowResponse) {
writeData(chunk);
}
return chunk.getLength();
}
@Override
public long getBytesWritten() {
return bytesWritten;
}
}
}
