org.apache.coyote.Request Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.coyote;
import java.io.IOException;
import java.util.HashMap;
import org.apache.tomcat.util.buf.ByteChunk;
import org.apache.tomcat.util.buf.MessageBytes;
import org.apache.tomcat.util.buf.UDecoder;
import org.apache.tomcat.util.http.MimeHeaders;
import org.apache.tomcat.util.http.Parameters;
import org.apache.tomcat.util.http.ContentType;
import org.apache.tomcat.util.http.Cookies;
/**
* This is a low-level, efficient representation of a server request. Most
* fields are GC-free, expensive operations are delayed until the user code
* needs the information.
*
* Processing is delegated to modules, using a hook mechanism.
*
* This class is not intended for user code - it is used internally by tomcat
* for processing the request in the most efficient way. Users ( servlets ) can
* access the information using a facade, which provides the high-level view
* of the request.
*
* For lazy evaluation, the request uses the getInfo() hook. The following ids
* are defined:
*
* - req.encoding - returns the request encoding
*
- req.attribute - returns a module-specific attribute ( like SSL keys, etc ).
*
*
* Tomcat defines a number of attributes:
*
* - "org.apache.tomcat.request" - allows access to the low-level
* request object in trusted applications
*
*
* @author James Duncan Davidson [[email protected]]
* @author James Todd [[email protected]]
* @author Jason Hunter [[email protected]]
* @author Harish Prabandham
* @author Alex Cruikshank [[email protected]]
* @author Hans Bergsten [[email protected]]
* @author Costin Manolache
* @author Remy Maucherat
*/
public final class Request {
// ----------------------------------------------------------- Constructors
public Request() {
parameters.setQuery(queryMB);
parameters.setURLDecoder(urlDecoder);
}
// ----------------------------------------------------- Instance Variables
private int serverPort = -1;
private MessageBytes serverNameMB = MessageBytes.newInstance();
private int remotePort;
private int localPort;
private MessageBytes schemeMB = MessageBytes.newInstance();
private MessageBytes methodMB = MessageBytes.newInstance();
private MessageBytes unparsedURIMB = MessageBytes.newInstance();
private MessageBytes uriMB = MessageBytes.newInstance();
private MessageBytes decodedUriMB = MessageBytes.newInstance();
private MessageBytes queryMB = MessageBytes.newInstance();
private MessageBytes protoMB = MessageBytes.newInstance();
// remote address/host
private MessageBytes remoteAddrMB = MessageBytes.newInstance();
private MessageBytes localNameMB = MessageBytes.newInstance();
private MessageBytes remoteHostMB = MessageBytes.newInstance();
private MessageBytes localAddrMB = MessageBytes.newInstance();
private MimeHeaders headers = new MimeHeaders();
private MessageBytes instanceId = MessageBytes.newInstance();
/**
* Notes.
*/
private Object notes[] = new Object[Constants.MAX_NOTES];
/**
* Associated input buffer.
*/
private InputBuffer inputBuffer = null;
/**
* URL decoder.
*/
private UDecoder urlDecoder = new UDecoder();
/**
* HTTP specific fields. (remove them ?)
*/
private long contentLength = -1;
private MessageBytes contentTypeMB = null;
private String charEncoding = null;
private Cookies cookies = new Cookies(headers);
private Parameters parameters = new Parameters();
private MessageBytes remoteUser=MessageBytes.newInstance();
private MessageBytes authType=MessageBytes.newInstance();
private HashMap attributes=new HashMap();
private Response response;
private ActionHook hook;
private int bytesRead=0;
// Time of the request - useful to avoid repeated calls to System.currentTime
private long startTime = 0L;
private int available = 0;
private RequestInfo reqProcessorMX=new RequestInfo(this);
// ------------------------------------------------------------- Properties
/**
* Get the instance id (or JVM route). Currently Ajp is sending it with each
* request. In future this should be fixed, and sent only once ( or
* 'negotiated' at config time so both tomcat and apache share the same name.
*
* @return the instance id
*/
public MessageBytes instanceId() {
return instanceId;
}
public MimeHeaders getMimeHeaders() {
return headers;
}
public UDecoder getURLDecoder() {
return urlDecoder;
}
// -------------------- Request data --------------------
public MessageBytes scheme() {
return schemeMB;
}
public MessageBytes method() {
return methodMB;
}
public MessageBytes unparsedURI() {
return unparsedURIMB;
}
public MessageBytes requestURI() {
return uriMB;
}
public MessageBytes decodedURI() {
return decodedUriMB;
}
public MessageBytes query() {
return queryMB;
}
public MessageBytes queryString() {
return queryMB;
}
public MessageBytes protocol() {
return protoMB;
}
/**
* Return the buffer holding the server name, if
* any. Use isNull() to check if there is no value
* set.
* This is the "virtual host", derived from the
* Host: header.
*/
public MessageBytes serverName() {
return serverNameMB;
}
public int getServerPort() {
return serverPort;
}
public void setServerPort(int serverPort ) {
this.serverPort=serverPort;
}
public MessageBytes remoteAddr() {
return remoteAddrMB;
}
public MessageBytes remoteHost() {
return remoteHostMB;
}
public MessageBytes localName() {
return localNameMB;
}
public MessageBytes localAddr() {
return localAddrMB;
}
public int getRemotePort(){
return remotePort;
}
public void setRemotePort(int port){
this.remotePort = port;
}
public int getLocalPort(){
return localPort;
}
public void setLocalPort(int port){
this.localPort = port;
}
// -------------------- encoding/type --------------------
/**
* Get the character encoding used for this request.
*/
public String getCharacterEncoding() {
if (charEncoding != null)
return charEncoding;
charEncoding = ContentType.getCharsetFromContentType(getContentType());
return charEncoding;
}
public void setCharacterEncoding(String enc) {
this.charEncoding = enc;
}
public void setContentLength(int len) {
this.contentLength = len;
}
public int getContentLength() {
long length = getContentLengthLong();
if (length < Integer.MAX_VALUE) {
return (int) length;
}
return -1;
}
public long getContentLengthLong() {
if( contentLength > -1 ) return contentLength;
MessageBytes clB = headers.getUniqueValue("content-length");
contentLength = (clB == null || clB.isNull()) ? -1 : clB.getLong();
return contentLength;
}
public String getContentType() {
contentType();
if ((contentTypeMB == null) || contentTypeMB.isNull())
return null;
return contentTypeMB.toString();
}
public void setContentType(String type) {
contentTypeMB.setString(type);
}
public MessageBytes contentType() {
if (contentTypeMB == null)
contentTypeMB = headers.getValue("content-type");
return contentTypeMB;
}
public void setContentType(MessageBytes mb) {
contentTypeMB=mb;
}
public String getHeader(String name) {
return headers.getHeader(name);
}
// -------------------- Associated response --------------------
public Response getResponse() {
return response;
}
public void setResponse( Response response ) {
this.response=response;
response.setRequest( this );
}
public void action(ActionCode actionCode, Object param) {
if( hook==null && response!=null )
hook=response.getHook();
if (hook != null) {
if( param==null )
hook.action(actionCode, this);
else
hook.action(actionCode, param);
}
}
// -------------------- Cookies --------------------
public Cookies getCookies() {
return cookies;
}
// -------------------- Parameters --------------------
public Parameters getParameters() {
return parameters;
}
// -------------------- Other attributes --------------------
// We can use notes for most - need to discuss what is of general interest
public void setAttribute( String name, Object o ) {
attributes.put( name, o );
}
public HashMap getAttributes() {
return attributes;
}
public Object getAttribute(String name ) {
return attributes.get(name);
}
public MessageBytes getRemoteUser() {
return remoteUser;
}
public MessageBytes getAuthType() {
return authType;
}
public int getAvailable() {
return available;
}
public void setAvailable(int available) {
this.available = available;
}
// -------------------- Input Buffer --------------------
public InputBuffer getInputBuffer() {
return inputBuffer;
}
public void setInputBuffer(InputBuffer inputBuffer) {
this.inputBuffer = inputBuffer;
}
/**
* Read data from the input buffer and put it into a byte chunk.
*
* The buffer is owned by the protocol implementation - it will be reused on the next read.
* The Adapter must either process the data in place or copy it to a separate buffer if it needs
* to hold it. In most cases this is done during byte->char conversions or via InputStream. Unlike
* InputStream, this interface allows the app to process data in place, without copy.
*
*/
public int doRead(ByteChunk chunk)
throws IOException {
int n = inputBuffer.doRead(chunk, this);
if (n > 0) {
bytesRead+=n;
}
return n;
}
// -------------------- debug --------------------
@Override
public String toString() {
return "R( " + requestURI().toString() + ")";
}
public long getStartTime() {
return startTime;
}
public void setStartTime(long startTime) {
this.startTime = startTime;
}
// -------------------- Per-Request "notes" --------------------
/**
* Used to store private data. Thread data could be used instead - but
* if you have the req, getting/setting a note is just a array access, may
* be faster than ThreadLocal for very frequent operations.
*
* Example use:
* Jk:
* HandlerRequest.HOSTBUFFER = 10 CharChunk, buffer for Host decoding
* WorkerEnv: SSL_CERT_NOTE=16 - MessageBytes containing the cert
*
* Catalina CoyoteAdapter:
* ADAPTER_NOTES = 1 - stores the HttpServletRequest object ( req/res)
*
* To avoid conflicts, note in the range 0 - 8 are reserved for the
* servlet container ( catalina connector, etc ), and values in 9 - 16
* for connector use.
*
* 17-31 range is not allocated or used.
*/
public final void setNote(int pos, Object value) {
notes[pos] = value;
}
public final Object getNote(int pos) {
return notes[pos];
}
// -------------------- Recycling --------------------
public void recycle() {
bytesRead=0;
contentLength = -1;
contentTypeMB = null;
charEncoding = null;
headers.recycle();
serverNameMB.recycle();
serverPort=-1;
localPort = -1;
remotePort = -1;
available = 0;
cookies.recycle();
parameters.recycle();
unparsedURIMB.recycle();
uriMB.recycle();
decodedUriMB.recycle();
queryMB.recycle();
methodMB.recycle();
protoMB.recycle();
schemeMB.recycle();
instanceId.recycle();
remoteUser.recycle();
authType.recycle();
attributes.clear();
}
// -------------------- Info --------------------
public void updateCounters() {
reqProcessorMX.updateCounters();
}
public RequestInfo getRequestProcessor() {
return reqProcessorMX;
}
public int getBytesRead() {
return bytesRead;
}
public void setBytesRead(int bytesRead) {
this.bytesRead = bytesRead;
}
public boolean isProcessing() {
return reqProcessorMX.getStage()==org.apache.coyote.Constants.STAGE_SERVICE;
}
}