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/*
* $Id$
*
* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2011, Professor Benoit Macq
* Copyright (c) 2010-2011, Kaori Hagihara
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import java.net.*;
import java.io.*;
import java.util.*;
public class JPIPHttpClient
{
private String comURL;
protected int fw, fh;
protected int rx, ry;
protected int rw, rh;
protected String cid;
protected String tid;
private boolean JPTstream;
private boolean JPPstream;
public JPIPHttpClient( String URI)
{
comURL = URI + "?";
fw = fh = -1;
rx = ry = -1;
rw = rh = -1;
cid = null;
tid = null;
JPTstream = false;
JPPstream = false;
}
public int getFw(){ return fw;}
public int getFh(){ return fh;}
public int getRx(){ return rx;}
public int getRy(){ return ry;}
public int getRw(){ return rw;}
public int getRh(){ return rh;}
public byte[] requestViewWindow( int reqfw, int reqfh)
{
if( cid != null)
return requestViewWindow( reqfw, reqfh, cid);
else
return null;
}
public byte[] requestViewWindow( int reqfw, int reqfh, int reqrx, int reqry, int reqrw, int reqrh)
{
if( cid != null)
return requestViewWindow( reqfw, reqfh, reqrx, reqry, reqrw, reqrh, cid);
else
if( tid != null)
return requestViewWindow( null, tid, reqfw, reqfh, reqrx, reqry, reqrw, reqrh, null, false, false, false);
else
return null;
}
public byte[] requestViewWindow( int reqfw, int reqfh, String reqcid)
{
return requestViewWindow( null, null, reqfw, reqfh, -1, -1, -1, -1, reqcid, false, false, false);
}
public byte[] requestViewWindow( int reqfw, int reqfh, int reqrx, int reqry, int reqrw, int reqrh, String reqcid)
{
return requestViewWindow( null, null, reqfw, reqfh, reqrx, reqry, reqrw, reqrh, reqcid, false, false, false);
}
public byte[] requestViewWindow( String target, int reqfw, int reqfh)
{
return requestViewWindow( target, null, reqfw, reqfh, -1, -1, -1, -1, null, false, false, false);
}
public byte[] requestViewWindow( String target, int reqfw, int reqfh, boolean reqcnew, boolean reqJPP, boolean reqJPT)
{
if( cid == null) // 1 channel allocation only
return requestViewWindow( target, null, reqfw, reqfh, -1, -1, -1, -1, null, reqcnew, reqJPP, reqJPT);
else
return null;
}
public byte[] requestViewWindow( String target, String reqtid, int reqfw, int reqfh, boolean reqcnew, boolean reqJPP, boolean reqJPT)
{
if( cid == null) // 1 channel allocation only
return requestViewWindow( target, reqtid, reqfw, reqfh, -1, -1, -1, -1, null, reqcnew, reqJPP, reqJPT);
else
return null;
}
public byte[] requestViewWindow( String target, int reqfw, int reqfh, int reqrx, int reqry, int reqrw, int reqrh)
{
return requestViewWindow( target, null, reqfw, reqfh, reqrx, reqry, reqrw, reqrh, null, false, false, false);
}
public byte[] requestViewWindow( int reqfw, int reqfh, String reqcid, boolean reqcnew, boolean reqJPP, boolean reqJPT)
{
return requestViewWindow( null, null, reqfw, reqfh, -1, -1, -1, -1, reqcid, reqcnew, reqJPP, reqJPT);
}
public byte[] requestViewWindow( String target,
String reqtid,
int reqfw, int reqfh,
int reqrx, int reqry,
int reqrw, int reqrh,
String reqcid, boolean reqcnew, boolean reqJPP, boolean reqJPT)
{
if( reqtid != null)
tid = reqtid;
String urlstring = const_urlstring( target, reqtid, reqfw, reqfh, reqrx, reqry, reqrw, reqrh, reqcid, reqcnew, reqJPP, reqJPT);
return GETrequest( urlstring);
}
public byte[] requestXML()
{
String urlstring = comURL;
if( cid == null)
return null;
urlstring = urlstring.concat( "cid=" + cid);
urlstring = urlstring.concat( "&metareq=[xml_]");
return GETrequest( urlstring);
}
private byte[] GETrequest( String urlstring)
{
int buflen = 0;
URL url = null;
HttpURLConnection urlconn = null;
byte[] jpipstream = null;
try{
url = new URL( urlstring);
System.err.println("Requesting: " + url);
urlconn = (HttpURLConnection)url.openConnection();
urlconn.setRequestMethod("GET");
urlconn.setInstanceFollowRedirects(false);
urlconn.connect();
Map<String,java.util.List<String>> headers = urlconn.getHeaderFields();
java.util.List<String> hvaluelist;
String hvalueline;
String status = headers.get(null).get(0);
System.err.println( status);
if( !status.contains("OK"))
System.err.println( headers.get("Reason"));
if(( hvaluelist = headers.get("Content-type")) == null)
hvaluelist = headers.get("Content-Type");
hvalueline = hvaluelist.get(0);
System.err.println( hvalueline);
if( hvalueline.endsWith("jpt-stream"))
JPTstream = true;
else if( hvalueline.endsWith("jpp-stream"))
JPPstream = true;
if(( hvaluelist = headers.get("JPIP-fsiz")) != null){
hvalueline = hvaluelist.get(0);
fw = Integer.valueOf( hvalueline.substring( 0, hvalueline.indexOf(','))).intValue();
fh = Integer.valueOf( hvalueline.substring( hvalueline.indexOf(',')+1 )).intValue();
System.err.println("fw,fh: " + fw + "," + fh);
}
if(( hvaluelist = headers.get("JPIP-roff")) != null){
hvalueline = hvaluelist.get(0);
rx = Integer.valueOf( hvalueline.substring( 0, hvalueline.indexOf(','))).intValue();
ry = Integer.valueOf( hvalueline.substring( hvalueline.indexOf(',')+1 )).intValue();
System.err.println("rx,ry: " + rx + "," + ry);
}
if(( hvaluelist = headers.get("JPIP-rsiz")) != null){
hvalueline = hvaluelist.get(0);
rw = Integer.valueOf( hvalueline.substring( 0, hvalueline.indexOf(','))).intValue();
rh = Integer.valueOf( hvalueline.substring( hvalueline.indexOf(',')+1 )).intValue();
System.err.println("rw,rh: " + rw + "," + rh);
}
if(( hvaluelist = headers.get("JPIP-cnew")) != null){
hvalueline = hvaluelist.get(0);
cid = hvalueline.substring( hvalueline.indexOf('=')+1, hvalueline.indexOf(','));
System.err.println("cid: " + cid);
}
if(( hvaluelist = headers.get("JPIP-tid")) != null){
hvalueline = hvaluelist.get(0);
tid = hvalueline.substring( hvalueline.indexOf('=')+1);
System.err.println("tid: " + tid);
}
InputStream input = urlconn.getInputStream();
buflen = input.available();
if( buflen > 0){
ByteArrayOutputStream tmpstream = new ByteArrayOutputStream();
byte[] buf = new byte[ 1024];
System.err.println("reading jpipstream...");
int redlen;
do{
redlen = input.read( buf);
if( redlen == -1)
break;
tmpstream.write( buf, 0, redlen);
}while( redlen > 0);
buflen = tmpstream.size();
jpipstream = tmpstream.toByteArray();
tmpstream = null;
System.err.println("jpiplen: " + buflen);
System.err.println(" succeeded");
}
else{
System.err.println("No new jpipstream");
}
input.close();
}
catch ( MalformedURLException e){
e.printStackTrace();
}
catch ( ProtocolException e){
e.printStackTrace();
}
catch( ClassCastException e){
e.printStackTrace();
}
catch( NullPointerException e){
e.printStackTrace();
}
catch( UnknownServiceException e){
e.printStackTrace();
}
catch ( IOException e){
e.printStackTrace();
}
urlconn.disconnect();
return jpipstream;
}
private String const_urlstring( String target,
String reqtid,
int reqfw, int reqfh,
int reqrx, int reqry,
int reqrw, int reqrh,
String reqcid, boolean reqcnew, boolean reqJPP, boolean reqJPT)
{
String urlstring = comURL;
// C.7.3 Image Return Type
// add type=jpp-stream(;ptype=ext) or type=jpt-stream;ttype=ext
if( target != null){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "target=" + target);
}
if( reqtid != null){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "tid=" + reqtid);
}
if( reqfw != -1 && reqfh != -1){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "fsiz=" + reqfw + "," + reqfh);
}
if( reqrx != -1 && reqry != -1){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "roff=" + reqrx + "," + reqry);
}
if( reqrw != -1 && reqrh != -1){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "rsiz=" + reqrw + "," + reqrh);
}
if( reqcid != null){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "cid=" + reqcid);
}
if( reqcnew){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "cnew=http");
}
if( reqJPP && !JPTstream){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "type=jpp-stream");
}
else if( reqJPT && !JPPstream){
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
urlstring = urlstring.concat( "type=jpt-stream");
}
else{ // remove this option later
if( !urlstring.endsWith("?"))
urlstring = urlstring.concat( "&");
if( JPTstream)
urlstring = urlstring.concat( "type=jpt-stream");
else if( JPPstream)
urlstring = urlstring.concat( "type=jpp-stream");
}
return urlstring;
}
public void closeChannel()
{
if( cid == null)
return;
try{
URL url = new URL( comURL + "cclose=" + cid);
System.err.println( "closing cid: " + cid);
HttpURLConnection urlconn = (HttpURLConnection)url.openConnection();
urlconn.setRequestMethod("GET");
urlconn.setInstanceFollowRedirects(false);
urlconn.connect();
Map headers = urlconn.getHeaderFields();
urlconn.disconnect();
} catch ( MalformedURLException e){
e.printStackTrace();
} catch ( IOException e){
e.printStackTrace();
}
}
}
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