/*
* 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.jmeter.protocol.http.control;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.Socket;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.jorphan.util.JOrphanUtils;
import org.apache.log.Logger;
import org.apache.oro.text.regex.MatchResult;
import org.apache.oro.text.regex.Pattern;
import org.apache.oro.text.regex.PatternMatcherInput;
import org.apache.oro.text.regex.Perl5Compiler;
import org.apache.oro.text.regex.Perl5Matcher;
/**
* Thread to handle one client request. Gets the request from the client and
* sends the response back to the client.
*/
public class HttpMirrorThread implements Runnable {
private static final Logger log = LoggingManager.getLoggerForClass();
private static final String ISO_8859_1 = "ISO-8859-1"; //$NON-NLS-1$
private static final byte[] CRLF = { 0x0d, 0x0a };
/** Socket to client. */
private final Socket clientSocket;
public HttpMirrorThread(Socket _clientSocket) {
this.clientSocket=_clientSocket;
}
/**
* Main processing method for the HttpMirror object
*/
@Override
public void run() {
log.debug("Starting thread");
BufferedInputStream in = null;
BufferedOutputStream out = null;
try {
in = new BufferedInputStream(clientSocket.getInputStream());
// Read the header part, we will be looking for a content-length
// header, so we know how much we should read.
// We assume headers are in ISO_8859_1
// If we do not find such a header, we will just have to read until
// we have to block to read more, until we support chunked transfer
int contentLength = -1;
boolean isChunked = false;
byte[] buffer = new byte[1024];
StringBuilder headers = new StringBuilder();
int length = 0;
int positionOfBody = 0;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
while(positionOfBody <= 0 && ((length = in.read(buffer)) != -1)) {
log.debug("Write body");
baos.write(buffer, 0, length); // echo back
headers.append(new String(buffer, 0, length, ISO_8859_1));
// Check if we have read all the headers
positionOfBody = getPositionOfBody(headers.toString());
}
baos.close();
final String headerString = headers.toString();
// Look for special Response Length header
String responseStatusValue = getRequestHeaderValue(headerString, "X-ResponseStatus"); //$NON-NLS-1$
if(responseStatusValue == null) {
responseStatusValue = "200 OK";
}
log.debug("Write headers");
out = new BufferedOutputStream(clientSocket.getOutputStream());
// The headers are written using ISO_8859_1 encoding
out.write(("HTTP/1.0 "+responseStatusValue).getBytes(ISO_8859_1)); //$NON-NLS-1$
out.write(CRLF);
out.write("Content-Type: text/plain".getBytes(ISO_8859_1)); //$NON-NLS-1$
out.write(CRLF);
// Look for special Response Length header
String responseLengthValue = getRequestHeaderValue(headerString, "X-ResponseLength"); //$NON-NLS-1$
int responseLength=-1;
if(responseLengthValue != null) {
responseLength = Integer.parseInt(responseLengthValue);
}
// Look for special Cookie request
String cookieHeaderValue = getRequestHeaderValue(headerString, "X-SetCookie"); //$NON-NLS-1$
if (cookieHeaderValue != null) {
out.write("Set-Cookie: ".getBytes(ISO_8859_1));
out.write(cookieHeaderValue.getBytes(ISO_8859_1));
out.write(CRLF);
}
out.write(CRLF);
out.flush();
if(responseLength>=0) {
out.write(baos.toByteArray(), 0, Math.min(baos.toByteArray().length, responseLength));
} else {
out.write(baos.toByteArray());
}
// Check if we have found a content-length header
String contentLengthHeaderValue = getRequestHeaderValue(headerString, "Content-Length"); //$NON-NLS-1$
if(contentLengthHeaderValue != null) {
contentLength = Integer.parseInt(contentLengthHeaderValue);
}
// Look for special Sleep request
String sleepHeaderValue = getRequestHeaderValue(headerString, "X-Sleep"); //$NON-NLS-1$
if(sleepHeaderValue != null) {
Thread.sleep(Integer.parseInt(sleepHeaderValue));
}
String transferEncodingHeaderValue = getRequestHeaderValue(headerString, "Transfer-Encoding"); //$NON-NLS-1$
if(transferEncodingHeaderValue != null) {
isChunked = transferEncodingHeaderValue.equalsIgnoreCase("chunked"); //$NON-NLS-1$
// We only support chunked transfer encoding
if(!isChunked) {
log.error("Transfer-Encoding header set, the value is not supported : " + transferEncodingHeaderValue);
}
}
// If we know the content length, we can allow the reading of
// the request to block until more data arrives.
// If it is chunked transfer, we cannot allow the reading to
// block, because we do not know when to stop reading, because
// the chunked transfer is not properly supported yet
length = 0;
if(contentLength > 0) {
// Check how much of the body we have already read as part of reading
// the headers
// We subtract two bytes for the crlf divider between header and body
int totalReadBytes = headerString.length() - positionOfBody - 2;
// We know when to stop reading, so we can allow the read method to block
log.debug("Reading, "+totalReadBytes+" < " +contentLength);
while((totalReadBytes < contentLength) && ((length = in.read(buffer)) != -1)) {
log.debug("Read bytes: "+length);
out.write(buffer, 0, length);
totalReadBytes += length;
log.debug("totalReadBytes: "+totalReadBytes);
}
}
else if (isChunked) {
// It is chunked transfer encoding, which we do not really support yet.
// So we just read without blocking, because we do not know when to
// stop reading, so we cannot block
// TODO propery implement support for chunked transfer, i.e. to
// know when we have read the whole request, and therefore allow
// the reading to block
log.debug("Chunked");
while(in.available() > 0 && ((length = in.read(buffer)) != -1)) {
out.write(buffer, 0, length);
}
}
else {
// The reqest has no body, or it has a transfer encoding we do not support.
// In either case, we read any data available
log.debug("Other");
while(in.available() > 0 && ((length = in.read(buffer)) != -1)) {
log.debug("Read bytes: "+length);
out.write(buffer, 0, length);
}
}
log.debug("Flush");
out.flush();
} catch (IOException e) {
log.error("", e);
} catch (InterruptedException e) {
log.error("", e);
} finally {
JOrphanUtils.closeQuietly(out);
JOrphanUtils.closeQuietly(in);
JOrphanUtils.closeQuietly(clientSocket);
}
log.debug("End of Thread");
}
private static String getRequestHeaderValue(String requestHeaders, String headerName) {
Perl5Matcher localMatcher = JMeterUtils.getMatcher();
// We use multi-line mask so can prefix the line with ^
String expression = "^" + headerName + ":\\s+([^\\r\\n]+)"; // $NON-NLS-1$ $NON-NLS-2$
Pattern pattern = JMeterUtils.getPattern(expression, Perl5Compiler.READ_ONLY_MASK | Perl5Compiler.CASE_INSENSITIVE_MASK | Perl5Compiler.MULTILINE_MASK);
if(localMatcher.contains(requestHeaders, pattern)) {
// The value is in the first group, group 0 is the whole match
// System.out.println("Found:'"+localMatcher.getMatch().group(1)+"'");
// System.out.println("in: '"+localMatcher.getMatch().group(0)+"'");
return localMatcher.getMatch().group(1);
}
else {
return null;
}
}
private static int getPositionOfBody(String stringToCheck) {
Perl5Matcher localMatcher = JMeterUtils.getMatcher();
// The headers and body are divided by a blank line (the \r is to allow for the CR before LF)
String regularExpression = "^\\r$"; // $NON-NLS-1$
Pattern pattern = JMeterUtils.getPattern(regularExpression, Perl5Compiler.READ_ONLY_MASK | Perl5Compiler.CASE_INSENSITIVE_MASK | Perl5Compiler.MULTILINE_MASK);
PatternMatcherInput input = new PatternMatcherInput(stringToCheck);
if(localMatcher.contains(input, pattern)) {
MatchResult match = localMatcher.getMatch();
return match.beginOffset(0);
}
// No divider was found
return -1;
}
}