Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
//
// ========================================================================
// Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.http;
import java.io.IOException;
import java.nio.BufferOverflowException;
import java.nio.ByteBuffer;
import org.eclipse.jetty.http.HttpTokens.EndOfContent;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.util.StringUtil;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
/* ------------------------------------------------------------ */
/**
* HttpGenerator. Builds HTTP Messages.
*
*/
public class HttpGenerator
{
private static final Logger LOG = Log.getLogger(HttpGenerator.class);
public static final ResponseInfo CONTINUE_100_INFO = new ResponseInfo(HttpVersion.HTTP_1_1,null,-1,100,null,false);
public static final ResponseInfo PROGRESS_102_INFO = new ResponseInfo(HttpVersion.HTTP_1_1,null,-1,102,null,false);
public final static ResponseInfo RESPONSE_500_INFO =
new ResponseInfo(HttpVersion.HTTP_1_1,new HttpFields(){{put(HttpHeader.CONNECTION,HttpHeaderValue.CLOSE);}},0,HttpStatus.INTERNAL_SERVER_ERROR_500,null,false);
// states
public enum State { START, COMMITTED, COMPLETING, COMPLETING_1XX, END }
public enum Result { NEED_CHUNK,NEED_INFO,NEED_HEADER,FLUSH,CONTINUE,SHUTDOWN_OUT,DONE}
// other statics
public static final int CHUNK_SIZE = 12;
private State _state = State.START;
private EndOfContent _endOfContent = EndOfContent.UNKNOWN_CONTENT;
private long _contentPrepared = 0;
private boolean _noContent = false;
private Boolean _persistent = null;
private final int _send;
private final static int SEND_SERVER = 0x01;
private final static int SEND_XPOWEREDBY = 0x02;
/* ------------------------------------------------------------------------------- */
public static void setJettyVersion(String serverVersion)
{
SEND[SEND_SERVER] = StringUtil.getBytes("Server: " + serverVersion + "\015\012");
SEND[SEND_XPOWEREDBY] = StringUtil.getBytes("X-Powered-By: " + serverVersion + "\015\012");
SEND[SEND_SERVER | SEND_XPOWEREDBY] = StringUtil.getBytes("Server: " + serverVersion + "\015\012X-Powered-By: " +
serverVersion + "\015\012");
}
/* ------------------------------------------------------------------------------- */
// data
private boolean _needCRLF = false;
/* ------------------------------------------------------------------------------- */
public HttpGenerator()
{
this(false,false);
}
/* ------------------------------------------------------------------------------- */
public HttpGenerator(boolean sendServerVersion,boolean sendXPoweredBy)
{
_send=(sendServerVersion?SEND_SERVER:0) | (sendXPoweredBy?SEND_XPOWEREDBY:0);
}
/* ------------------------------------------------------------------------------- */
public void reset()
{
_state = State.START;
_endOfContent = EndOfContent.UNKNOWN_CONTENT;
_noContent=false;
_persistent = null;
_contentPrepared = 0;
_needCRLF = false;
_noContent=false;
}
/* ------------------------------------------------------------ */
@Deprecated
public boolean getSendServerVersion ()
{
return (_send&SEND_SERVER)!=0;
}
/* ------------------------------------------------------------ */
@Deprecated
public void setSendServerVersion (boolean sendServerVersion)
{
throw new UnsupportedOperationException();
}
/* ------------------------------------------------------------ */
public State getState()
{
return _state;
}
/* ------------------------------------------------------------ */
public boolean isState(State state)
{
return _state == state;
}
/* ------------------------------------------------------------ */
public boolean isIdle()
{
return _state == State.START;
}
/* ------------------------------------------------------------ */
public boolean isEnd()
{
return _state == State.END;
}
/* ------------------------------------------------------------ */
public boolean isCommitted()
{
return _state.ordinal() >= State.COMMITTED.ordinal();
}
/* ------------------------------------------------------------ */
public boolean isChunking()
{
return _endOfContent==EndOfContent.CHUNKED_CONTENT;
}
/* ------------------------------------------------------------ */
public void setPersistent(boolean persistent)
{
_persistent=persistent;
}
/* ------------------------------------------------------------ */
/**
* @return true if known to be persistent
*/
public boolean isPersistent()
{
return Boolean.TRUE.equals(_persistent);
}
/* ------------------------------------------------------------ */
public boolean isWritten()
{
return _contentPrepared>0;
}
/* ------------------------------------------------------------ */
public long getContentPrepared()
{
return _contentPrepared;
}
/* ------------------------------------------------------------ */
public void abort()
{
_persistent=false;
_state=State.END;
_endOfContent=null;
}
/* ------------------------------------------------------------ */
public Result generateRequest(RequestInfo info, ByteBuffer header, ByteBuffer chunk, ByteBuffer content, boolean last) throws IOException
{
switch(_state)
{
case START:
{
if (info==null)
return Result.NEED_INFO;
// Do we need a request header
if (header==null)
return Result.NEED_HEADER;
// If we have not been told our persistence, set the default
if (_persistent==null)
_persistent=(info.getHttpVersion().ordinal() > HttpVersion.HTTP_1_0.ordinal());
// prepare the header
int pos=BufferUtil.flipToFill(header);
try
{
// generate ResponseLine
generateRequestLine(info,header);
if (info.getHttpVersion()==HttpVersion.HTTP_0_9)
_noContent=true;
else
generateHeaders(info,header,content,last);
boolean expect100 = info.getHttpFields().contains(HttpHeader.EXPECT, HttpHeaderValue.CONTINUE.asString());
if (expect100)
{
_state = State.COMMITTED;
}
else
{
// handle the content.
int len = BufferUtil.length(content);
if (len>0)
{
_contentPrepared+=len;
if (isChunking())
prepareChunk(header,len);
}
_state = last?State.COMPLETING:State.COMMITTED;
}
return Result.FLUSH;
}
catch(Exception e)
{
String message= (e instanceof BufferOverflowException)?"Response header too large":e.getMessage();
throw new IOException(message,e);
}
finally
{
BufferUtil.flipToFlush(header,pos);
}
}
case COMMITTED:
{
int len = BufferUtil.length(content);
if (len>0)
{
// Do we need a chunk buffer?
if (isChunking())
{
// Do we need a chunk buffer?
if (chunk==null)
return Result.NEED_CHUNK;
BufferUtil.clearToFill(chunk);
prepareChunk(chunk,len);
BufferUtil.flipToFlush(chunk,0);
}
_contentPrepared+=len;
}
if (last)
{
_state=State.COMPLETING;
return len>0?Result.FLUSH:Result.CONTINUE;
}
return Result.FLUSH;
}
case COMPLETING:
{
if (BufferUtil.hasContent(content))
{
LOG.debug("discarding content in COMPLETING");
BufferUtil.clear(content);
}
if (isChunking())
{
// Do we need a chunk buffer?
if (chunk==null)
return Result.NEED_CHUNK;
BufferUtil.clearToFill(chunk);
prepareChunk(chunk,0);
BufferUtil.flipToFlush(chunk,0);
_endOfContent=EndOfContent.UNKNOWN_CONTENT;
return Result.FLUSH;
}
_state=State.END;
return Boolean.TRUE.equals(_persistent)?Result.DONE:Result.SHUTDOWN_OUT;
}
case END:
if (BufferUtil.hasContent(content))
{
LOG.debug("discarding content in COMPLETING");
BufferUtil.clear(content);
}
return Result.DONE;
default:
throw new IllegalStateException();
}
}
/* ------------------------------------------------------------ */
public Result generateResponse(ResponseInfo info, ByteBuffer header, ByteBuffer chunk, ByteBuffer content, boolean last) throws IOException
{
switch(_state)
{
case START:
{
if (info==null)
return Result.NEED_INFO;
// Handle 0.9
if (info.getHttpVersion() == HttpVersion.HTTP_0_9)
{
_persistent = false;
_endOfContent=EndOfContent.EOF_CONTENT;
if (BufferUtil.hasContent(content))
_contentPrepared+=content.remaining();
_state = last?State.COMPLETING:State.COMMITTED;
return Result.FLUSH;
}
// Do we need a response header
if (header==null)
return Result.NEED_HEADER;
// If we have not been told our persistence, set the default
if (_persistent==null)
_persistent=(info.getHttpVersion().ordinal() > HttpVersion.HTTP_1_0.ordinal());
// prepare the header
int pos=BufferUtil.flipToFill(header);
try
{
// generate ResponseLine
generateResponseLine(info,header);
// Handle 1xx and no content responses
int status=info.getStatus();
if (status>=100 && status<200 )
{
_noContent=true;
if (status!=HttpStatus.SWITCHING_PROTOCOLS_101 )
{
header.put(HttpTokens.CRLF);
_state=State.COMPLETING_1XX;
return Result.FLUSH;
}
}
else if (status==HttpStatus.NO_CONTENT_204 || status==HttpStatus.NOT_MODIFIED_304)
{
_noContent=true;
}
generateHeaders(info,header,content,last);
// handle the content.
int len = BufferUtil.length(content);
if (len>0)
{
_contentPrepared+=len;
if (isChunking() && !info.isHead())
prepareChunk(header,len);
}
_state = last?State.COMPLETING:State.COMMITTED;
}
catch(Exception e)
{
String message= (e instanceof BufferOverflowException)?"Response header too large":e.getMessage();
throw new IOException(message,e);
}
finally
{
BufferUtil.flipToFlush(header,pos);
}
return Result.FLUSH;
}
case COMMITTED:
{
int len = BufferUtil.length(content);
// handle the content.
if (len>0)
{
if (isChunking())
{
if (chunk==null)
return Result.NEED_CHUNK;
BufferUtil.clearToFill(chunk);
prepareChunk(chunk,len);
BufferUtil.flipToFlush(chunk,0);
}
_contentPrepared+=len;
}
if (last)
{
_state=State.COMPLETING;
return len>0?Result.FLUSH:Result.CONTINUE;
}
return len>0?Result.FLUSH:Result.DONE;
}
case COMPLETING_1XX:
{
reset();
return Result.DONE;
}
case COMPLETING:
{
if (BufferUtil.hasContent(content))
{
LOG.debug("discarding content in COMPLETING");
BufferUtil.clear(content);
}
if (isChunking())
{
// Do we need a chunk buffer?
if (chunk==null)
return Result.NEED_CHUNK;
// Write the last chunk
BufferUtil.clearToFill(chunk);
prepareChunk(chunk,0);
BufferUtil.flipToFlush(chunk,0);
_endOfContent=EndOfContent.UNKNOWN_CONTENT;
return Result.FLUSH;
}
_state=State.END;
return Boolean.TRUE.equals(_persistent)?Result.DONE:Result.SHUTDOWN_OUT;
}
case END:
if (BufferUtil.hasContent(content))
{
LOG.debug("discarding content in COMPLETING");
BufferUtil.clear(content);
}
return Result.DONE;
default:
throw new IllegalStateException();
}
}
/* ------------------------------------------------------------ */
private void prepareChunk(ByteBuffer chunk, int remaining)
{
// if we need CRLF add this to header
if (_needCRLF)
BufferUtil.putCRLF(chunk);
// Add the chunk size to the header
if (remaining>0)
{
BufferUtil.putHexInt(chunk, remaining);
BufferUtil.putCRLF(chunk);
_needCRLF=true;
}
else
{
chunk.put(LAST_CHUNK);
_needCRLF=false;
}
}
/* ------------------------------------------------------------ */
private void generateRequestLine(RequestInfo request,ByteBuffer header)
{
header.put(StringUtil.getBytes(request.getMethod()));
header.put((byte)' ');
header.put(StringUtil.getBytes(request.getUri()));
switch(request.getHttpVersion())
{
case HTTP_1_0:
case HTTP_1_1:
header.put((byte)' ');
header.put(request.getHttpVersion().toBytes());
}
header.put(HttpTokens.CRLF);
}
/* ------------------------------------------------------------ */
private void generateResponseLine(ResponseInfo response, ByteBuffer header)
{
// Look for prepared response line
int status=response.getStatus();
PreparedResponse preprepared = status<__preprepared.length?__preprepared[status]:null;
String reason=response.getReason();
if (preprepared!=null)
{
if (reason==null)
header.put(preprepared._responseLine);
else
{
header.put(preprepared._schemeCode);
header.put(getReasonBytes(reason));
header.put(HttpTokens.CRLF);
}
}
else // generate response line
{
header.put(HTTP_1_1_SPACE);
header.put((byte) ('0' + status / 100));
header.put((byte) ('0' + (status % 100) / 10));
header.put((byte) ('0' + (status % 10)));
header.put((byte) ' ');
if (reason==null)
{
header.put((byte) ('0' + status / 100));
header.put((byte) ('0' + (status % 100) / 10));
header.put((byte) ('0' + (status % 10)));
}
else
header.put(getReasonBytes(reason));
header.put(HttpTokens.CRLF);
}
}
/* ------------------------------------------------------------ */
private byte[] getReasonBytes(String reason)
{
if (reason.length()>1024)
reason=reason.substring(0,1024);
byte[] _bytes = StringUtil.getBytes(reason);
for (int i=_bytes.length;i-->0;)
if (_bytes[i]=='\r' || _bytes[i]=='\n')
_bytes[i]='?';
return _bytes;
}
/* ------------------------------------------------------------ */
private void generateHeaders(Info _info,ByteBuffer header,ByteBuffer content,boolean last)
{
final RequestInfo request=(_info instanceof RequestInfo)?(RequestInfo)_info:null;
final ResponseInfo response=(_info instanceof ResponseInfo)?(ResponseInfo)_info:null;
// default field values
int send=_send;
HttpField transfer_encoding=null;
boolean keep_alive=false;
boolean close=false;
boolean content_type=false;
StringBuilder connection = null;
// Generate fields
if (_info.getHttpFields() != null)
{
for (HttpField field : _info.getHttpFields())
{
HttpHeader h = field.getHeader();
switch (h==null?HttpHeader.UNKNOWN:h)
{
case CONTENT_LENGTH:
// handle specially below
if (_info.getContentLength()>=0)
_endOfContent=EndOfContent.CONTENT_LENGTH;
break;
case CONTENT_TYPE:
{
if (field.getValue().startsWith(MimeTypes.Type.MULTIPART_BYTERANGES.toString()))
_endOfContent=EndOfContent.SELF_DEFINING_CONTENT;
// write the field to the header
content_type=true;
field.putTo(header);
break;
}
case TRANSFER_ENCODING:
{
if (_info.getHttpVersion() == HttpVersion.HTTP_1_1)
transfer_encoding = field;
// Do NOT add yet!
break;
}
case CONNECTION:
{
if (request!=null)
field.putTo(header);
// Lookup and/or split connection value field
HttpHeaderValue[] values = new HttpHeaderValue[]{HttpHeaderValue.CACHE.get(field.getValue())};
String[] split = null;
if (values[0]==null)
{
split = field.getValue().split("\\s*,\\s*");
if (split.length>0)
{
values=new HttpHeaderValue[split.length];
for (int i=0;i0)
{
// we have been given a content length
_endOfContent=EndOfContent.CONTENT_LENGTH;
long content_length = _info.getContentLength();
if ((response!=null || content_length>0 || content_type ) && !_noContent)
{
// known length but not actually set.
header.put(HttpHeader.CONTENT_LENGTH.getBytesColonSpace());
BufferUtil.putDecLong(header, content_length);
header.put(HttpTokens.CRLF);
}
}
else if (last)
{
// we have seen all the _content there is, so we can be content-length limited.
_endOfContent=EndOfContent.CONTENT_LENGTH;
long content_length = _contentPrepared+BufferUtil.length(content);
// Do we need to tell the headers about it
if ((response!=null || content_length>0 || content_type ) && !_noContent)
{
header.put(HttpHeader.CONTENT_LENGTH.getBytesColonSpace());
BufferUtil.putDecLong(header, content_length);
header.put(HttpTokens.CRLF);
}
}
else
{
// No idea, so we must assume that a body is coming
_endOfContent = (!isPersistent() || _info.getHttpVersion().ordinal() < HttpVersion.HTTP_1_1.ordinal() ) ? EndOfContent.EOF_CONTENT : EndOfContent.CHUNKED_CONTENT;
if (response!=null && _endOfContent==EndOfContent.EOF_CONTENT)
{
_endOfContent=EndOfContent.NO_CONTENT;
_noContent=true;
}
}
break;
case CONTENT_LENGTH:
long content_length = _info.getContentLength();
if ((response!=null || content_length>0 || content_type ) && !_noContent)
{
// known length but not actually set.
header.put(HttpHeader.CONTENT_LENGTH.getBytesColonSpace());
BufferUtil.putDecLong(header, content_length);
header.put(HttpTokens.CRLF);
}
break;
case NO_CONTENT:
if (response!=null && status >= 200 && status != 204 && status != 304)
header.put(CONTENT_LENGTH_0);
break;
case EOF_CONTENT:
_persistent = request!=null;
break;
case CHUNKED_CONTENT:
break;
default:
break;
}
// Add transfer_encoding if needed
if (isChunking())
{
// try to use user supplied encoding as it may have other values.
if (transfer_encoding != null && !HttpHeaderValue.CHUNKED.toString().equalsIgnoreCase(transfer_encoding.getValue()))
{
String c = transfer_encoding.getValue();
if (c.endsWith(HttpHeaderValue.CHUNKED.toString()))
transfer_encoding.putTo(header);
else
throw new IllegalArgumentException("BAD TE");
}
else
header.put(TRANSFER_ENCODING_CHUNKED);
}
// Handle connection if need be
if (_endOfContent==EndOfContent.EOF_CONTENT)
{
keep_alive=false;
_persistent=false;
}
// If this is a response, work out persistence
if (response!=null)
{
if (!isPersistent() && (close || _info.getHttpVersion().ordinal() > HttpVersion.HTTP_1_0.ordinal()))
{
if (connection==null)
header.put(CONNECTION_CLOSE);
else
{
header.put(CONNECTION_CLOSE,0,CONNECTION_CLOSE.length-2);
header.put((byte)',');
header.put(StringUtil.getBytes(connection.toString()));
header.put(CRLF);
}
}
else if (keep_alive)
{
if (connection==null)
header.put(CONNECTION_KEEP_ALIVE);
else
{
header.put(CONNECTION_KEEP_ALIVE,0,CONNECTION_CLOSE.length-2);
header.put((byte)',');
header.put(StringUtil.getBytes(connection.toString()));
header.put(CRLF);
}
}
else if (connection!=null)
{
header.put(CONNECTION_);
header.put(StringUtil.getBytes(connection.toString()));
header.put(CRLF);
}
}
if (status>199)
header.put(SEND[send]);
// end the header.
header.put(HttpTokens.CRLF);
}
/* ------------------------------------------------------------------------------- */
public static byte[] getReasonBuffer(int code)
{
PreparedResponse status = code<__preprepared.length?__preprepared[code]:null;
if (status!=null)
return status._reason;
return null;
}
/* ------------------------------------------------------------------------------- */
@Override
public String toString()
{
return String.format("%s{s=%s}",
getClass().getSimpleName(),
_state);
}
/* ------------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------------- */
// common _content
private static final byte[] LAST_CHUNK = { (byte) '0', (byte) '\015', (byte) '\012', (byte) '\015', (byte) '\012'};
private static final byte[] CONTENT_LENGTH_0 = StringUtil.getBytes("Content-Length: 0\015\012");
private static final byte[] CONNECTION_KEEP_ALIVE = StringUtil.getBytes("Connection: keep-alive\015\012");
private static final byte[] CONNECTION_CLOSE = StringUtil.getBytes("Connection: close\015\012");
private static final byte[] CONNECTION_ = StringUtil.getBytes("Connection: ");
private static final byte[] HTTP_1_1_SPACE = StringUtil.getBytes(HttpVersion.HTTP_1_1+" ");
private static final byte[] CRLF = StringUtil.getBytes("\015\012");
private static final byte[] TRANSFER_ENCODING_CHUNKED = StringUtil.getBytes("Transfer-Encoding: chunked\015\012");
private static final byte[][] SEND = new byte[][]{
new byte[0],
StringUtil.getBytes("Server: Jetty(9.x.x)\015\012"),
StringUtil.getBytes("X-Powered-By: Jetty(9.x.x)\015\012"),
StringUtil.getBytes("Server: Jetty(9.x.x)\015\012X-Powered-By: Jetty(9.x.x)\015\012")
};
/* ------------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------------- */
// Build cache of response lines for status
private static class PreparedResponse
{
byte[] _reason;
byte[] _schemeCode;
byte[] _responseLine;
}
private static final PreparedResponse[] __preprepared = new PreparedResponse[HttpStatus.MAX_CODE+1];
static
{
int versionLength=HttpVersion.HTTP_1_1.toString().length();
for (int i=0;i<__preprepared.length;i++)
{
HttpStatus.Code code = HttpStatus.getCode(i);
if (code==null)
continue;
String reason=code.getMessage();
byte[] line=new byte[versionLength+5+reason.length()+2];
HttpVersion.HTTP_1_1.toBuffer().get(line,0,versionLength);
line[versionLength+0]=' ';
line[versionLength+1]=(byte)('0'+i/100);
line[versionLength+2]=(byte)('0'+(i%100)/10);
line[versionLength+3]=(byte)('0'+(i%10));
line[versionLength+4]=' ';
for (int j=0;j=100 && _status<200;
}
public int getStatus()
{
return _status;
}
public String getReason()
{
return _reason;
}
public boolean isHead()
{
return _head;
}
@Override
public String toString()
{
return String.format("ResponseInfo{%s %s %s,%d,%b}",_httpVersion,_status,_reason,_contentLength,_head);
}
}
}
