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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.http11;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.nio.ByteBuffer;
import java.util.Enumeration;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;
import javax.servlet.http.HttpServletResponse;
import org.apache.coyote.AbstractProcessor;
import org.apache.coyote.ActionCode;
import org.apache.coyote.ErrorState;
import org.apache.coyote.Request;
import org.apache.coyote.RequestInfo;
import org.apache.coyote.UpgradeProtocol;
import org.apache.coyote.UpgradeToken;
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.coyote.http11.upgrade.InternalHttpUpgradeHandler;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.util.ExceptionUtils;
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.log.UserDataHelper;
import org.apache.tomcat.util.net.AbstractEndpoint;
import org.apache.tomcat.util.net.AbstractEndpoint.Handler.SocketState;
import org.apache.tomcat.util.net.SSLSupport;
import org.apache.tomcat.util.net.SendfileDataBase;
import org.apache.tomcat.util.net.SendfileKeepAliveState;
import org.apache.tomcat.util.net.SendfileState;
import org.apache.tomcat.util.net.SocketWrapperBase;
import org.apache.tomcat.util.res.StringManager;
public class Http11Processor extends AbstractProcessor {
private static final Log log = LogFactory.getLog(Http11Processor.class);
/**
* The string manager for this package.
*/
private static final StringManager sm = StringManager.getManager(Http11Processor.class);
private final UserDataHelper userDataHelper;
/**
* Input.
*/
protected final Http11InputBuffer inputBuffer;
/**
* Output.
*/
protected final Http11OutputBuffer outputBuffer;
/**
* Tracks how many internal filters are in the filter library so they
* are skipped when looking for pluggable filters.
*/
private int pluggableFilterIndex = Integer.MAX_VALUE;
/**
* Keep-alive.
*/
protected volatile boolean keepAlive = true;
/**
* Flag used to indicate that the socket should be kept open (e.g. for keep
* alive or send file.
*/
protected boolean openSocket = false;
/**
* Flag that indicates if the request headers have been completely read.
*/
protected boolean readComplete = true;
/**
* HTTP/1.1 flag.
*/
protected boolean http11 = true;
/**
* HTTP/0.9 flag.
*/
protected boolean http09 = false;
/**
* Content delimiter for the request (if false, the connection will
* be closed at the end of the request).
*/
protected boolean contentDelimitation = true;
/**
* Regular expression that defines the restricted user agents.
*/
protected Pattern restrictedUserAgents = null;
/**
* Maximum number of Keep-Alive requests to honor.
*/
protected int maxKeepAliveRequests = -1;
/**
* Maximum timeout on uploads. 5 minutes as in Apache HTTPD server.
*/
protected int connectionUploadTimeout = 300000;
/**
* Flag to disable setting a different time-out on uploads.
*/
protected boolean disableUploadTimeout = false;
/**
* Allowed compression level.
*/
protected int compressionLevel = 0;
/**
* Minimum content size to make compression.
*/
protected int compressionMinSize = 2048;
/**
* Max saved post size.
*/
protected int maxSavePostSize = 4 * 1024;
/**
* Regular expression that defines the user agents to not use gzip with
*/
protected Pattern noCompressionUserAgents = null;
/**
* List of MIMES for which compression may be enabled.
* Note: This is not spelled correctly but can't be changed without breaking
* compatibility
*/
protected String[] compressableMimeTypes;
/**
* Host name (used to avoid useless B2C conversion on the host name).
*/
protected char[] hostNameC = new char[0];
/**
* Allow a customized the server header for the tin-foil hat folks.
*/
private String server = null;
/*
* Should application provider values for the HTTP Server header be removed.
* Note that if {@link #server} is set, any application provided value will
* be over-ridden.
*/
private boolean serverRemoveAppProvidedValues = false;
/**
* Instance of the new protocol to use after the HTTP connection has been
* upgraded.
*/
protected UpgradeToken upgradeToken = null;
/**
* Sendfile data.
*/
protected SendfileDataBase sendfileData = null;
/**
* UpgradeProtocol information
*/
private final Map httpUpgradeProtocols;
private final boolean allowHostHeaderMismatch;
public Http11Processor(int maxHttpHeaderSize, boolean allowHostHeaderMismatch,
boolean rejectIllegalHeaderName, AbstractEndpoint endpoint, int maxTrailerSize,
Set allowedTrailerHeaders, int maxExtensionSize, int maxSwallowSize,
Map httpUpgradeProtocols, boolean sendReasonPhrase) {
super(endpoint);
userDataHelper = new UserDataHelper(log);
inputBuffer = new Http11InputBuffer(request, maxHttpHeaderSize,rejectIllegalHeaderName);
request.setInputBuffer(inputBuffer);
outputBuffer = new Http11OutputBuffer(response, maxHttpHeaderSize, sendReasonPhrase);
response.setOutputBuffer(outputBuffer);
// Create and add the identity filters.
inputBuffer.addFilter(new IdentityInputFilter(maxSwallowSize));
outputBuffer.addFilter(new IdentityOutputFilter());
// Create and add the chunked filters.
inputBuffer.addFilter(new ChunkedInputFilter(maxTrailerSize, allowedTrailerHeaders,
maxExtensionSize, maxSwallowSize));
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());
pluggableFilterIndex = inputBuffer.getFilters().length;
this.httpUpgradeProtocols = httpUpgradeProtocols;
this.allowHostHeaderMismatch = allowHostHeaderMismatch;
}
/**
* Set compression level.
*
* @param compression One of on, force,
* off or the minimum compression size in
* bytes which implies on
*/
public void setCompression(String compression) {
if (compression.equals("on")) {
this.compressionLevel = 1;
} else if (compression.equals("force")) {
this.compressionLevel = 2;
} else if (compression.equals("off")) {
this.compressionLevel = 0;
} else {
try {
// Try to parse compression as an int, which would give the
// minimum compression size
compressionMinSize = Integer.parseInt(compression);
this.compressionLevel = 1;
} catch (Exception e) {
this.compressionLevel = 0;
}
}
}
/**
* Set Minimum size to trigger compression.
*
* @param compressionMinSize The minimum content length required for
* compression in bytes
*/
public void setCompressionMinSize(int compressionMinSize) {
this.compressionMinSize = compressionMinSize;
}
/**
* Set no compression user agent pattern. Regular expression as supported
* by {@link Pattern}. e.g.: gorilla|desesplorer|tigrus.
*
* @param noCompressionUserAgents The regular expression for user agent
* strings for which compression should not
* be applied
*/
public void setNoCompressionUserAgents(String noCompressionUserAgents) {
if (noCompressionUserAgents == null || noCompressionUserAgents.length() == 0) {
this.noCompressionUserAgents = null;
} else {
this.noCompressionUserAgents =
Pattern.compile(noCompressionUserAgents);
}
}
/**
* @param compressibleMimeTypes See
* {@link Http11Processor#setCompressibleMimeTypes(String[])}
* @deprecated Use
* {@link Http11Processor#setCompressibleMimeTypes(String[])}
*/
@Deprecated
public void setCompressableMimeTypes(String[] compressibleMimeTypes) {
setCompressibleMimeTypes(compressibleMimeTypes);
}
/**
* Set compressible mime-type list (this method is best when used with
* a large number of connectors, where it would be better to have all of
* them referenced a single array).
*
* @param compressibleMimeTypes MIME types for which compression should be
* enabled
*/
public void setCompressibleMimeTypes(String[] compressibleMimeTypes) {
this.compressableMimeTypes = compressibleMimeTypes;
}
/**
* Return compression level.
*
* @return The current compression level in string form (off/on/force)
*/
public String getCompression() {
switch (compressionLevel) {
case 0:
return "off";
case 1:
return "on";
case 2:
return "force";
}
return "off";
}
/**
* Checks if any entry in the string array starts with the specified value
*
* @param sArray the StringArray
* @param value string
*/
private static boolean startsWithStringArray(String sArray[], String value) {
if (value == null) {
return false;
}
for (int i = 0; i < sArray.length; i++) {
if (value.startsWith(sArray[i])) {
return true;
}
}
return false;
}
/**
* Set restricted user agent list (which will downgrade the connector
* to HTTP/1.0 mode). Regular expression as supported by {@link Pattern}.
*
* @param restrictedUserAgents The regular expression as supported by
* {@link Pattern} for the user agents e.g.
* "gorilla|desesplorer|tigrus"
*/
public void setRestrictedUserAgents(String restrictedUserAgents) {
if (restrictedUserAgents == null ||
restrictedUserAgents.length() == 0) {
this.restrictedUserAgents = null;
} else {
this.restrictedUserAgents = Pattern.compile(restrictedUserAgents);
}
}
/**
* Set the maximum number of Keep-Alive requests to allow.
* This is to safeguard from DoS attacks. Setting to a negative
* value disables the limit.
*
* @param mkar The new maximum number of Keep-Alive requests allowed
*/
public void setMaxKeepAliveRequests(int mkar) {
maxKeepAliveRequests = mkar;
}
/**
* Get the maximum number of Keep-Alive requests allowed. A negative value
* means there is no limit.
*
* @return the number of Keep-Alive requests that we will allow.
*/
public int getMaxKeepAliveRequests() {
return maxKeepAliveRequests;
}
/**
* Set the maximum size of a POST which will be buffered in SSL mode.
* When a POST is received where the security constraints require a client
* certificate, the POST body needs to be buffered while an SSL handshake
* takes place to obtain the certificate.
*
* @param msps The maximum size POST body to buffer in bytes
*/
public void setMaxSavePostSize(int msps) {
maxSavePostSize = msps;
}
/**
* Return the maximum size of a POST which will be buffered in SSL mode.
*
* @return The size in bytes
*/
public int getMaxSavePostSize() {
return maxSavePostSize;
}
/**
* Set the flag to control whether a separate connection timeout is used
* during upload of a request body.
*
* @param isDisabled {@code true} if the separate upload timeout should be
* disabled
*/
public void setDisableUploadTimeout(boolean isDisabled) {
disableUploadTimeout = isDisabled;
}
/**
* Get the flag that controls upload time-outs.
*
* @return {@code true} if the separate upload timeout is disabled
*/
public boolean getDisableUploadTimeout() {
return disableUploadTimeout;
}
/**
* Set the upload timeout.
*
* @param timeout Upload timeout in milliseconds
*/
public void setConnectionUploadTimeout(int timeout) {
connectionUploadTimeout = timeout ;
}
/**
* Get the upload timeout.
*
* @return Upload timeout in milliseconds
*/
public int getConnectionUploadTimeout() {
return connectionUploadTimeout;
}
/**
* Set the server header name.
*
* @param server The new value to use for the server header
*/
public void setServer(String server) {
if (server == null || server.equals("")) {
this.server = null;
} else {
this.server = server;
}
}
public void setServerRemoveAppProvidedValues(boolean serverRemoveAppProvidedValues) {
this.serverRemoveAppProvidedValues = serverRemoveAppProvidedValues;
}
/**
* Check if the resource could be compressed, if the client supports it.
*/
private boolean isCompressible() {
// Check if content is not already gzipped
MessageBytes contentEncodingMB =
response.getMimeHeaders().getValue("Content-Encoding");
if ((contentEncodingMB != null)
&& (contentEncodingMB.indexOf("gzip") != -1)) {
return false;
}
// If force mode, always compress (test purposes only)
if (compressionLevel == 2) {
return true;
}
// Check if sufficient length to trigger the compression
long contentLength = response.getContentLengthLong();
if ((contentLength == -1)
|| (contentLength > compressionMinSize)) {
// Check for compatible MIME-TYPE
if (compressableMimeTypes != null) {
return (startsWithStringArray(compressableMimeTypes, response.getContentType()));
}
}
return false;
}
/**
* Check if compression should be used for this resource. Already checked
* that the resource could be compressed if the client supports it.
*/
private boolean useCompression() {
// Check if browser support gzip encoding
MessageBytes acceptEncodingMB =
request.getMimeHeaders().getValue("accept-encoding");
if ((acceptEncodingMB == null)
|| (acceptEncodingMB.indexOf("gzip") == -1)) {
return false;
}
// If force mode, always compress (test purposes only)
if (compressionLevel == 2) {
return true;
}
// Check for incompatible Browser
if (noCompressionUserAgents != null) {
MessageBytes userAgentValueMB =
request.getMimeHeaders().getValue("user-agent");
if(userAgentValueMB != null) {
String userAgentValue = userAgentValueMB.toString();
if (noCompressionUserAgents.matcher(userAgentValue).matches()) {
return false;
}
}
}
return true;
}
/**
* Specialized utility method: find a sequence of lower case bytes inside
* a ByteChunk.
*/
private static 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.
*/
private static 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 */;
}
/**
* Add an input filter to the current request. If the encoding is not
* supported, a 501 response will be returned to the client.
*/
private void addInputFilter(InputFilter[] inputFilters, String encodingName) {
// Trim provided encoding name and convert to lower case since transfer
// encoding names are case insensitive. (RFC2616, section 3.6)
encodingName = encodingName.trim().toLowerCase(Locale.ENGLISH);
if (encodingName.equals("identity")) {
// Skip
} else if (encodingName.equals("chunked")) {
inputBuffer.addActiveFilter
(inputFilters[Constants.CHUNKED_FILTER]);
contentDelimitation = true;
} else {
for (int i = pluggableFilterIndex; i < inputFilters.length; i++) {
if (inputFilters[i].getEncodingName().toString().equals(encodingName)) {
inputBuffer.addActiveFilter(inputFilters[i]);
return;
}
}
// Unsupported transfer encoding
// 501 - Unimplemented
response.setStatus(501);
setErrorState(ErrorState.CLOSE_CLEAN, null);
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.request.prepare") +
" Unsupported transfer encoding [" + encodingName + "]");
}
}
}
@Override
public SocketState service(SocketWrapperBase socketWrapper)
throws IOException {
RequestInfo rp = request.getRequestProcessor();
rp.setStage(org.apache.coyote.Constants.STAGE_PARSE);
// Setting up the I/O
setSocketWrapper(socketWrapper);
inputBuffer.init(socketWrapper);
outputBuffer.init(socketWrapper);
// Flags
keepAlive = true;
openSocket = false;
readComplete = true;
boolean keptAlive = false;
SendfileState sendfileState = SendfileState.DONE;
while (!getErrorState().isError() && keepAlive && !isAsync() && upgradeToken == null &&
sendfileState == SendfileState.DONE && !endpoint.isPaused()) {
// Parsing the request header
try {
if (!inputBuffer.parseRequestLine(keptAlive)) {
if (inputBuffer.getParsingRequestLinePhase() == -1) {
return SocketState.UPGRADING;
} else if (handleIncompleteRequestLineRead()) {
break;
}
}
if (endpoint.isPaused()) {
// 503 - Service unavailable
response.setStatus(503);
setErrorState(ErrorState.CLOSE_CLEAN, null);
} else {
keptAlive = true;
// Set this every time in case limit has been changed via JMX
request.getMimeHeaders().setLimit(endpoint.getMaxHeaderCount());
if (!inputBuffer.parseHeaders()) {
// We've read part of the request, don't recycle it
// instead associate it with the socket
openSocket = true;
readComplete = false;
break;
}
if (!disableUploadTimeout) {
socketWrapper.setReadTimeout(connectionUploadTimeout);
}
}
} catch (IOException e) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.header.parse"), e);
}
setErrorState(ErrorState.CLOSE_CONNECTION_NOW, e);
break;
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
UserDataHelper.Mode logMode = userDataHelper.getNextMode();
if (logMode != null) {
String message = sm.getString("http11processor.header.parse");
switch (logMode) {
case INFO_THEN_DEBUG:
message += sm.getString("http11processor.fallToDebug");
//$FALL-THROUGH$
case INFO:
log.info(message, t);
break;
case DEBUG:
log.debug(message, t);
}
}
// 400 - Bad Request
response.setStatus(400);
setErrorState(ErrorState.CLOSE_CLEAN, t);
getAdapter().log(request, response, 0);
}
// Has an upgrade been requested?
Enumeration connectionValues = request.getMimeHeaders().values("Connection");
boolean foundUpgrade = false;
while (connectionValues.hasMoreElements() && !foundUpgrade) {
foundUpgrade = connectionValues.nextElement().toLowerCase(
Locale.ENGLISH).contains("upgrade");
}
if (foundUpgrade) {
// Check the protocol
String requestedProtocol = request.getHeader("Upgrade");
UpgradeProtocol upgradeProtocol = httpUpgradeProtocols.get(requestedProtocol);
if (upgradeProtocol != null) {
if (upgradeProtocol.accept(request)) {
// TODO Figure out how to handle request bodies at this
// point.
response.setStatus(HttpServletResponse.SC_SWITCHING_PROTOCOLS);
response.setHeader("Connection", "Upgrade");
response.setHeader("Upgrade", requestedProtocol);
action(ActionCode.CLOSE, null);
getAdapter().log(request, response, 0);
InternalHttpUpgradeHandler upgradeHandler =
upgradeProtocol.getInternalUpgradeHandler(
getAdapter(), cloneRequest(request));
UpgradeToken upgradeToken = new UpgradeToken(upgradeHandler, null, null);
action(ActionCode.UPGRADE, upgradeToken);
return SocketState.UPGRADING;
}
}
}
if (!getErrorState().isError()) {
// Setting up filters, and parse some request headers
rp.setStage(org.apache.coyote.Constants.STAGE_PREPARE);
try {
prepareRequest();
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.request.prepare"), t);
}
// 500 - Internal Server Error
response.setStatus(500);
setErrorState(ErrorState.CLOSE_CLEAN, t);
getAdapter().log(request, response, 0);
}
}
if (maxKeepAliveRequests == 1) {
keepAlive = false;
} else if (maxKeepAliveRequests > 0 &&
socketWrapper.decrementKeepAlive() <= 0) {
keepAlive = false;
}
// Process the request in the adapter
if (!getErrorState().isError()) {
try {
rp.setStage(org.apache.coyote.Constants.STAGE_SERVICE);
getAdapter().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 && !getErrorState().isError() && !isAsync() &&
statusDropsConnection(response.getStatus())) {
setErrorState(ErrorState.CLOSE_CLEAN, null);
}
} catch (InterruptedIOException e) {
setErrorState(ErrorState.CLOSE_CONNECTION_NOW, e);
} catch (HeadersTooLargeException e) {
log.error(sm.getString("http11processor.request.process"), e);
// The response should not have been committed but check it
// anyway to be safe
if (response.isCommitted()) {
setErrorState(ErrorState.CLOSE_NOW, e);
} else {
response.reset();
response.setStatus(500);
setErrorState(ErrorState.CLOSE_CLEAN, e);
response.setHeader("Connection", "close"); // TODO: Remove
}
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
log.error(sm.getString("http11processor.request.process"), t);
// 500 - Internal Server Error
response.setStatus(500);
setErrorState(ErrorState.CLOSE_CLEAN, t);
getAdapter().log(request, response, 0);
}
}
// Finish the handling of the request
rp.setStage(org.apache.coyote.Constants.STAGE_ENDINPUT);
if (!isAsync()) {
// If this is an async request then the request ends when it has
// been completed. The AsyncContext is responsible for calling
// endRequest() in that case.
endRequest();
}
rp.setStage(org.apache.coyote.Constants.STAGE_ENDOUTPUT);
// If there was an error, make sure the request is counted as
// and error, and update the statistics counter
if (getErrorState().isError()) {
response.setStatus(500);
}
if (!isAsync() || getErrorState().isError()) {
request.updateCounters();
if (getErrorState().isIoAllowed()) {
inputBuffer.nextRequest();
outputBuffer.nextRequest();
}
}
if (!disableUploadTimeout) {
int soTimeout = endpoint.getConnectionTimeout();
if(soTimeout > 0) {
socketWrapper.setReadTimeout(soTimeout);
} else {
socketWrapper.setReadTimeout(0);
}
}
rp.setStage(org.apache.coyote.Constants.STAGE_KEEPALIVE);
sendfileState = processSendfile(socketWrapper);
}
rp.setStage(org.apache.coyote.Constants.STAGE_ENDED);
if (getErrorState().isError() || endpoint.isPaused()) {
return SocketState.CLOSED;
} else if (isAsync()) {
return SocketState.LONG;
} else if (isUpgrade()) {
return SocketState.UPGRADING;
} else {
if (sendfileState == SendfileState.PENDING) {
return SocketState.SENDFILE;
} else {
if (openSocket) {
if (readComplete) {
return SocketState.OPEN;
} else {
return SocketState.LONG;
}
} else {
return SocketState.CLOSED;
}
}
}
}
private Request cloneRequest(Request source) throws IOException {
Request dest = new Request();
// Transfer the minimal information required for the copy of the Request
// that is passed to the HTTP upgrade process
dest.decodedURI().duplicate(source.decodedURI());
dest.method().duplicate(source.method());
dest.getMimeHeaders().duplicate(source.getMimeHeaders());
dest.requestURI().duplicate(source.requestURI());
return dest;
}
private 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() > 1) {
// Started to read request line.
if (endpoint.isPaused()) {
// Partially processed the request so need to respond
response.setStatus(503);
setErrorState(ErrorState.CLOSE_CLEAN, null);
getAdapter().log(request, response, 0);
return false;
} else {
// Need to keep processor associated with socket
readComplete = false;
}
}
return true;
}
private void checkExpectationAndResponseStatus() {
if (request.hasExpectation() &&
(response.getStatus() < 200 || response.getStatus() > 299)) {
// Client sent Expect: 100-continue but received a
// non-2xx final response. Disable keep-alive (if enabled)
// to ensure that the connection is closed. Some clients may
// still send the body, some may send the next request.
// No way to differentiate, so close the connection to
// force the client to send the next request.
inputBuffer.setSwallowInput(false);
keepAlive = false;
}
}
/**
* After reading the request headers, we have to setup the request filters.
*/
private void prepareRequest() {
http11 = true;
http09 = false;
contentDelimitation = false;
if (endpoint.isSSLEnabled()) {
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;
// Send 505; Unsupported HTTP version
response.setStatus(505);
setErrorState(ErrorState.CLOSE_CLEAN, null);
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.request.prepare")+
" Unsupported HTTP version \""+protocolMB+"\"");
}
}
MimeHeaders headers = request.getMimeHeaders();
// Check connection header
MessageBytes connectionValueMB = headers.getValue(Constants.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;
}
}
if (http11) {
MessageBytes expectMB = headers.getValue("expect");
if (expectMB != null) {
if (expectMB.indexOfIgnoreCase("100-continue", 0) != -1) {
inputBuffer.setSwallowInput(false);
request.setExpectation(true);
} else {
response.setStatus(HttpServletResponse.SC_EXPECTATION_FAILED);
setErrorState(ErrorState.CLOSE_CLEAN, null);
}
}
}
// 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();
if (restrictedUserAgents != null &&
restrictedUserAgents.matcher(userAgentValue).matches()) {
http11 = false;
keepAlive = false;
}
}
}
// Check host header
MessageBytes hostValueMB = null;
try {
hostValueMB = headers.getUniqueValue("host");
} catch (IllegalArgumentException iae) {
// Multiple Host headers are not permitted
// 400 - Bad request
response.setStatus(400);
setErrorState(ErrorState.CLOSE_CLEAN, null);
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.request.multipleHosts"));
}
}
if (http11 && hostValueMB == null) {
// 400 - Bad request
response.setStatus(400);
setErrorState(ErrorState.CLOSE_CLEAN, null);
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.request.prepare")+
" host header missing");
}
}
// 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) {
pos += 3;
byte[] uriB = uriBC.getBytes();
slashPos = uriBC.indexOf('/', pos);
int atPos = uriBC.indexOf('@', pos);
if (slashPos == -1) {
slashPos = uriBC.getLength();
// Set URI as "/"
request.requestURI().setBytes
(uriB, uriBCStart + pos - 2, 1);
} else {
request.requestURI().setBytes
(uriB, uriBCStart + slashPos,
uriBC.getLength() - slashPos);
}
// Skip any user info
if (atPos != -1) {
pos = atPos + 1;
}
if (http11) {
// Missing host header is illegal but handled above
if (hostValueMB != null) {
// Any host in the request line must be consistent with
// the Host header
if (!hostValueMB.getByteChunk().equals(
uriB, uriBCStart + pos, slashPos - pos)) {
if (allowHostHeaderMismatch) {
// The requirements of RFC 2616 are being
// applied. If the host header and the request
// line do not agree, the request line takes
// precedence
hostValueMB = headers.setValue("host");
hostValueMB.setBytes(uriB, uriBCStart + pos, slashPos - pos);
} else {
// The requirements of RFC 7230 are being
// applied. If the host header and the request
// line do not agree, trigger a 400 response.
response.setStatus(400);
setErrorState(ErrorState.CLOSE_CLEAN, null);
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.request.inconsistentHosts"));
}
}
}
}
} else {
// Not HTTP/1.1 - no Host header so generate one since
// Tomcat internals assume it is set
hostValueMB = headers.setValue("host");
hostValueMB.setBytes(uriB, uriBCStart + pos, slashPos - pos);
}
}
}
// Input filter setup
InputFilter[] inputFilters = inputBuffer.getFilters();
// Parse transfer-encoding header
if (http11) {
MessageBytes 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);
addInputFilter(inputFilters, encodingName);
startPos = commaPos + 1;
commaPos = transferEncodingValue.indexOf(',', startPos);
}
encodingName = transferEncodingValue.substring(startPos);
addInputFilter(inputFilters, encodingName);
}
}
// Parse content-length header
long contentLength = request.getContentLengthLong();
if (contentLength >= 0) {
if (contentDelimitation) {
// contentDelimitation being true at this point indicates that
// chunked encoding is being used but chunked encoding should
// not be used with a content length. RFC 2616, section 4.4,
// bullet 3 states Content-Length must be ignored in this case -
// so remove it.
headers.removeHeader("content-length");
request.setContentLength(-1);
} else {
inputBuffer.addActiveFilter
(inputFilters[Constants.IDENTITY_FILTER]);
contentDelimitation = true;
}
}
parseHost(hostValueMB);
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;
}
if (getErrorState().isError()) {
getAdapter().log(request, response, 0);
}
}
/**
* When committing the response, we have to validate the set of headers, as
* well as setup the response filters.
*/
@Override
protected final 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]);
outputBuffer.commit();
return;
}
int statusCode = response.getStatus();
if (statusCode < 200 || statusCode == 204 || statusCode == 205 ||
statusCode == 304) {
// No entity body
outputBuffer.addActiveFilter
(outputFilters[Constants.VOID_FILTER]);
entityBody = false;
contentDelimitation = true;
if (statusCode == 205) {
// RFC 7231 requires the server to explicitly signal an empty
// response in this case
response.setContentLength(0);
} else {
response.setContentLength(-1);
}
}
MessageBytes methodMB = request.method();
if (methodMB.equals("HEAD")) {
// No entity body
outputBuffer.addActiveFilter
(outputFilters[Constants.VOID_FILTER]);
contentDelimitation = true;
}
// Sendfile support
if (endpoint.getUseSendfile()) {
prepareSendfile(outputFilters);
}
// Check for compression
boolean isCompressible = false;
boolean useCompression = false;
if (entityBody && (compressionLevel > 0) && sendfileData == null) {
isCompressible = isCompressible();
if (isCompressible) {
useCompression = useCompression();
}
// Change content-length to -1 to force chunking
if (useCompression) {
response.setContentLength(-1);
}
}
MimeHeaders headers = response.getMimeHeaders();
// A SC_NO_CONTENT response may include entity headers
if (entityBody || statusCode == HttpServletResponse.SC_NO_CONTENT) {
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();
boolean connectionClosePresent = false;
if (contentLength != -1) {
headers.setValue("Content-Length").setLong(contentLength);
outputBuffer.addActiveFilter
(outputFilters[Constants.IDENTITY_FILTER]);
contentDelimitation = true;
} else {
// If the response code supports an entity body and we're on
// HTTP 1.1 then we chunk unless we have a Connection: close header
connectionClosePresent = isConnectionClose(headers);
if (entityBody && http11 && !connectionClosePresent) {
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");
}
// If it might be compressed, set the Vary header
if (isCompressible) {
// 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 unless application has already set one (e.g. in a
// Caching Filter)
if (headers.getValue("Date") == null) {
headers.addValue("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;
}
// This may disabled keep-alive to check before working out the
// Connection header.
checkExpectationAndResponseStatus();
// If we know that the request is bad this early, add the
// Connection: close header.
if (keepAlive && statusDropsConnection(statusCode)) {
keepAlive = false;
}
if (!keepAlive) {
// Avoid adding the close header twice
if (!connectionClosePresent) {
headers.addValue(Constants.CONNECTION).setString(
Constants.CLOSE);
}
} else if (!http11 && !getErrorState().isError()) {
headers.addValue(Constants.CONNECTION).setString(Constants.KEEPALIVE);
}
// Add server header
if (server == null) {
if (serverRemoveAppProvidedValues) {
headers.removeHeader("server");
}
} else {
// server always overrides anything the app might set
headers.setValue("Server").setString(server);
}
// Build the response header
try {
outputBuffer.sendStatus();
int size = headers.size();
for (int i = 0; i < size; i++) {
outputBuffer.sendHeader(headers.getName(i), headers.getValue(i));
}
outputBuffer.endHeaders();
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
// If something goes wrong, reset the header buffer so the error
// response can be written instead.
outputBuffer.resetHeaderBuffer();
throw t;
}
outputBuffer.commit();
}
private static boolean isConnectionClose(MimeHeaders headers) {
MessageBytes connection = headers.getValue(Constants.CONNECTION);
if (connection == null) {
return false;
}
return connection.equals(Constants.CLOSE);
}
private void prepareSendfile(OutputFilter[] outputFilters) {
String fileName = (String) request.getAttribute(
org.apache.coyote.Constants.SENDFILE_FILENAME_ATTR);
if (fileName == null) {
sendfileData = null;
} else {
// No entity body sent here
outputBuffer.addActiveFilter(outputFilters[Constants.VOID_FILTER]);
contentDelimitation = true;
long pos = ((Long) request.getAttribute(
org.apache.coyote.Constants.SENDFILE_FILE_START_ATTR)).longValue();
long end = ((Long) request.getAttribute(
org.apache.coyote.Constants.SENDFILE_FILE_END_ATTR)).longValue();
sendfileData = socketWrapper.createSendfileData(fileName, pos, end - pos);
}
}
/**
* Parse host.
*/
private void parseHost(MessageBytes valueMB) {
if (valueMB == null || valueMB.isNull()) {
// HTTP/1.0
// If no host header, use the port info from the endpoint
// The host will be obtained lazily from the socket if required
// using ActionCode#REQ_LOCAL_NAME_ATTRIBUTE
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) {
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 || charValue > 9) {
// Invalid character
// 400 - Bad request
response.setStatus(400);
setErrorState(ErrorState.CLOSE_CLEAN, null);
break;
}
port = port + (charValue * mult);
mult = 10 * mult;
}
request.setServerPort(port);
}
}
@Override
protected boolean flushBufferedWrite() throws IOException {
if (outputBuffer.hasDataToWrite()) {
if (outputBuffer.flushBuffer(false)) {
// The buffer wasn't fully flushed so re-register the
// socket for write. Note this does not go via the
// Response since the write registration state at
// that level should remain unchanged. Once the buffer
// has been emptied then the code below will call
// Adaptor.asyncDispatch() which will enable the
// Response to respond to this event.
outputBuffer.registerWriteInterest();
return true;
}
}
return false;
}
@Override
protected SocketState dispatchEndRequest() {
if (!keepAlive) {
return SocketState.CLOSED;
} else {
endRequest();
inputBuffer.nextRequest();
outputBuffer.nextRequest();
if (socketWrapper.isReadPending()) {
return SocketState.LONG;
} else {
return SocketState.OPEN;
}
}
}
@Override
protected Log getLog() {
return log;
}
/*
* No more input will be passed to the application. Remaining input will be
* swallowed or the connection dropped depending on the error and
* expectation status.
*/
private void endRequest() {
if (getErrorState().isError()) {
// 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.
inputBuffer.setSwallowInput(false);
} else {
// Need to check this again here in case the response was
// committed before the error that requires the connection
// to be closed occurred.
checkExpectationAndResponseStatus();
}
// Finish the handling of the request
if (getErrorState().isIoAllowed()) {
try {
inputBuffer.endRequest();
} catch (IOException e) {
setErrorState(ErrorState.CLOSE_CONNECTION_NOW, e);
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
// 500 - Internal Server Error
// Can't add a 500 to the access log since that has already been
// written in the Adapter.service method.
response.setStatus(500);
setErrorState(ErrorState.CLOSE_NOW, t);
log.error(sm.getString("http11processor.request.finish"), t);
}
}
if (getErrorState().isIoAllowed()) {
try {
action(ActionCode.COMMIT, null);
outputBuffer.end();
} catch (IOException e) {
setErrorState(ErrorState.CLOSE_CONNECTION_NOW, e);
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
setErrorState(ErrorState.CLOSE_NOW, t);
log.error(sm.getString("http11processor.response.finish"), t);
}
}
}
@Override
protected final void finishResponse() throws IOException {
outputBuffer.end();
}
@Override
protected final void 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() && request.hasExpectation()) {
inputBuffer.setSwallowInput(true);
try {
outputBuffer.sendAck();
} catch (IOException e) {
setErrorState(ErrorState.CLOSE_CONNECTION_NOW, e);
}
}
}
@Override
protected final void flush() throws IOException {
outputBuffer.flush();
}
@Override
protected final int available(boolean doRead) {
return inputBuffer.available(doRead);
}
@Override
protected final void setRequestBody(ByteChunk body) {
InputFilter savedBody = new SavedRequestInputFilter(body);
savedBody.setRequest(request);
Http11InputBuffer internalBuffer = (Http11InputBuffer) request.getInputBuffer();
internalBuffer.addActiveFilter(savedBody);
}
@Override
protected final void setSwallowResponse() {
outputBuffer.responseFinished = true;
}
@Override
protected final void disableSwallowRequest() {
inputBuffer.setSwallowInput(false);
}
@Override
protected final void sslReHandShake() throws IOException {
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]);
/*
* Outside the try/catch because we want I/O errors during
* renegotiation to be thrown for the caller to handle since they
* will be fatal to the connection.
*/
socketWrapper.doClientAuth(sslSupport);
try {
/*
* Errors processing the cert chain do not affect the client
* connection so they can be logged and swallowed here.
*/
Object sslO = sslSupport.getPeerCertificateChain();
if (sslO != null) {
request.setAttribute(SSLSupport.CERTIFICATE_KEY, sslO);
}
} catch (IOException ioe) {
log.warn(sm.getString("http11processor.socket.ssl"), ioe);
}
}
}
@Override
protected final boolean isRequestBodyFullyRead() {
return inputBuffer.isFinished();
}
@Override
protected final void registerReadInterest() {
socketWrapper.registerReadInterest();
}
@Override
protected final boolean isReady() {
return outputBuffer.isReady();
}
@Override
public UpgradeToken getUpgradeToken() {
return upgradeToken;
}
@Override
protected final void doHttpUpgrade(UpgradeToken upgradeToken) {
this.upgradeToken = upgradeToken;
// Stop further HTTP output
outputBuffer.responseFinished = true;
}
@Override
public ByteBuffer getLeftoverInput() {
return inputBuffer.getLeftover();
}
@Override
public boolean isUpgrade() {
return upgradeToken != null;
}
/**
* Trigger sendfile processing if required.
*
* @return The state of send file processing
*/
private SendfileState processSendfile(SocketWrapperBase socketWrapper) {
openSocket = keepAlive;
// Done is equivalent to sendfile not being used
SendfileState result = SendfileState.DONE;
// Do sendfile as needed: add socket to sendfile and end
if (sendfileData != null && !getErrorState().isError()) {
if (keepAlive) {
if (available(false) == 0) {
sendfileData.keepAliveState = SendfileKeepAliveState.OPEN;
} else {
sendfileData.keepAliveState = SendfileKeepAliveState.PIPELINED;
}
} else {
sendfileData.keepAliveState = SendfileKeepAliveState.NONE;
}
result = socketWrapper.processSendfile(sendfileData);
switch (result) {
case ERROR:
// Write failed
if (log.isDebugEnabled()) {
log.debug(sm.getString("http11processor.sendfile.error"));
}
setErrorState(ErrorState.CLOSE_CONNECTION_NOW, null);
//$FALL-THROUGH$
default:
sendfileData = null;
}
}
return result;
}
@Override
public final void recycle() {
getAdapter().checkRecycled(request, response);
super.recycle();
inputBuffer.recycle();
outputBuffer.recycle();
upgradeToken = null;
socketWrapper = null;
sendfileData = null;
}
@Override
public void pause() {
// NOOP for HTTP
}
}
