/*
* Written and copyright 2001-2003 Tobias Minich.
*
* HTTPDownloader.java
*
* Created on 17. August 2003, 22:22
* Copyright (C) 2003, 2004, 2005, 2006 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*/
package org.gudy.azureus2.core3.torrentdownloader.impl;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.URL;
import java.net.URLDecoder;
import java.util.Iterator;
import java.util.Map;
import java.util.zip.GZIPInputStream;
import java.util.zip.InflaterInputStream;
import javax.net.ssl.*;
import org.gudy.azureus2.core3.config.COConfigurationManager;
//import org.gudy.azureus2.core3.security.SESecurityManager;
import org.gudy.azureus2.core3.torrentdownloader.TorrentDownloaderCallBackInterface;
import org.gudy.azureus2.core3.torrentdownloader.TorrentDownloader;
import org.gudy.azureus2.core3.util.*;
//import org.gudy.azureus2.core3.util.protocol.magnet.MagnetConnection;
import org.gudy.azureus2.core3.torrent.*;
/**
* @author Tobias Minich
*/
public class TorrentDownloaderImpl extends AEThread implements TorrentDownloader {
private String original_url;
private String url_str;
private String referrer;
private Map request_properties;
private String file_str;
private URL url;
private HttpURLConnection con;
private String error = "Ok";
private String status = "";
private TorrentDownloaderCallBackInterface iface;
private int state = STATE_NON_INIT;
private int percentDone = 0;
private int readTotal = 0;
private boolean cancel = false;
private String filename, directoryname;
private File file = null;
private byte[] buf = new byte[1020];
private int bufBytes = 0;
private boolean deleteFileOnCancel = true;
private boolean ignoreReponseCode = false;
private AEMonitor this_mon = new AEMonitor( "TorrentDownloader" );
private int errCode;
public TorrentDownloaderImpl() {
super("Torrent Downloader");
setDaemon(true);
}
public void
init(
TorrentDownloaderCallBackInterface _iface,
String _url,
String _referrer,
Map _request_properties,
String _file )
{
this.iface = _iface;
original_url = _url;
//clean up accidental left-facing slashes
_url = _url.replace( (char)92, (char)47 );
// it's possible that the URL hasn't been encoded (see Bug 878990)
_url = _url.replaceAll( " ", "%20" );
setName("TorrentDownloader: " + _url);
url_str = _url;
referrer = _referrer;
request_properties = _request_properties;
file_str = _file;
}
public void notifyListener() {
if (this.iface != null)
this.iface.TorrentDownloaderEvent(this.state, this);
else if (this.state == STATE_ERROR)
System.err.println(this.error);
}
private void cleanUpFile() {
if ((this.file != null) && this.file.exists())
this.file.delete();
}
private void error(int errCode, String err) {
try{
this_mon.enter(); // what's the point of this?
this.state = STATE_ERROR;
this.setError(errCode, err);
this.cleanUpFile();
this.notifyListener();
}finally{
this_mon.exit();
}
}
public void
runSupport() {
try{
new URL( url_str ); //determine if this is already a proper URL
}
catch( Throwable t ) { //it's not
// //check if the string is just a base32/hex-encoded torrent infohash
//
// String magnet_uri = UrlUtils.normaliseMagnetURI( url_str );
//
// if ( magnet_uri != null ){
//
// url_str = magnet_uri;
// }
}
try {
url = AddressUtils.adjustURL( new URL(url_str));
String protocol = url.getProtocol().toLowerCase();
// hack here - the magnet download process requires an additional paramter to cause it to
// stall on error so the error can be reported
// if ( protocol.equals( "magnet" ) || protocol.equals( "dht" )){
//
// url = AddressUtils.adjustURL( new URL(url_str+"&pause_on_error=true"));
// }
for (int i=0;i<2;i++){
try{
// if ( protocol.equals("https")){
//
// // see ConfigurationChecker for SSL client defaults
//
// HttpsURLConnection ssl_con = (HttpsURLConnection)url.openConnection();
//
// // allow for certs that contain IP addresses rather than dns names
//
// ssl_con.setHostnameVerifier(
// new HostnameVerifier()
// {
// public boolean
// verify(
// String host,
// SSLSession session )
// {
// return( true );
// }
// });
//
// con = ssl_con;
//
// }else{
//
con = (HttpURLConnection) url.openConnection();
// }
con.setRequestProperty("User-Agent", Constants.AZUREUS_NAME + " " + Constants.AZUREUS_VERSION);
if ( referrer != null && referrer.length() > 0 ){
con.setRequestProperty( "Referer", referrer );
}
if ( request_properties != null ){
Iterator it = request_properties.entrySet().iterator();
while( it.hasNext()){
Map.Entry entry = (Map.Entry)it.next();
String key = (String)entry.getKey();
String value = (String)entry.getValue();
// currently this code doesn't support gzip/deflate...
if ( !key.equalsIgnoreCase( "Accept-Encoding" )){
con.setRequestProperty( key, value );
}
}
}
this.con.connect();
break;
// }catch( SSLException e ){
//
// if ( i == 0 ){
//
// if ( SESecurityManager.installServerCertificates( url ) != null ){
//
// // certificate has been installed
//
// continue; // retry with new certificate
// }
// }
//
// throw( e );
//
}
catch( IOException e ){
if ( i == 0 ){
URL retry_url = UrlUtils.getIPV4Fallback( url );
if ( retry_url != null ){
url = retry_url;
}else{
throw( e );
}
}
}
}
int response = this.con.getResponseCode();
if (!ignoreReponseCode) {
if ((response != HttpURLConnection.HTTP_ACCEPTED) && (response != HttpURLConnection.HTTP_OK)) {
this.error(response, Integer.toString(response) + ": " + this.con.getResponseMessage());
return;
}
}
/*
Map headerFields = this.con.getHeaderFields();
System.out.println("Header of download of " + url_str);
for (Iterator iter = headerFields.keySet().iterator(); iter.hasNext();) {
String s = (String) iter.next();
System.out.println(s + ":" + headerFields.get(s));
}
*/
filename = this.con.getHeaderField("Content-Disposition");
if ((filename!=null) && filename.toLowerCase().matches(".*attachment.*")) // Some code to handle b0rked servers.
while (filename.toLowerCase().charAt(0)!='a')
filename = filename.substring(1);
if ((filename == null) || !filename.toLowerCase().startsWith("attachment") || (filename.indexOf('=') == -1)) {
String tmp = this.url.getFile();
if (tmp.length() == 0 || tmp.equals("/")) {
filename = url.getHost();
}
else if ( tmp.startsWith("?")){
// probably a magnet URI - use the hash
// magnet:?xt=urn:sha1:VGC53ZWCUXUWVGX7LQPVZIYF4L6RXSU6
String query = tmp.toUpperCase();
int pos = query.indexOf( "XT=URN:SHA1:");
if ( pos == -1 ){
pos = query.indexOf( "XT=URN:BTIH:");
}
if ( pos != -1 ){
pos += 12;
int p2 = query.indexOf( "&", pos );
if ( p2 == -1 ){
filename = query.substring(pos);
}else{
filename = query.substring(pos,p2);
}
}else{
filename = "Torrent" + (long)(Math.random()*Long.MAX_VALUE);
}
filename += ".tmp";
}else{
if (tmp.lastIndexOf('/') != -1)
tmp = tmp.substring(tmp.lastIndexOf('/') + 1);
// remove any params in the url
int param_pos = tmp.indexOf('?');
if ( param_pos != -1 ){
tmp = tmp.substring(0,param_pos);
}
filename = URLDecoder.decode(tmp, Constants.DEFAULT_ENCODING );
}
} else {
filename = filename.substring(filename.indexOf('=') + 1);
if (filename.startsWith("\"") && filename.endsWith("\""))
filename = filename.substring(1, filename.lastIndexOf('\"'));
filename = URLDecoder.decode(filename, Constants.DEFAULT_ENCODING );
// not sure of this piece of logic here but I'm not changing it at the moment
File temp = new File(filename);
filename = temp.getName();
}
filename = FileUtil.convertOSSpecificChars( filename, false );
// directoryname = COConfigurationManager.getDirectoryParameter("General_sDefaultTorrent_Directory");
// boolean useTorrentSave = COConfigurationManager.getBooleanParameter("Save Torrent Files");
directoryname = "D:\\Development\\testDownloads\\";
boolean useTorrentSave = true;
if (file_str != null) {
// not completely sure about the whole logic in this block
File temp = new File(file_str);
//if we're not using a default torrent save dir
if (!useTorrentSave || directoryname.length() == 0) {
//if it's already a dir
if (temp.isDirectory()) {
//use it
directoryname = temp.getCanonicalPath();
}
//it's a file
else {
//so use its parent dir
directoryname = temp.getCanonicalFile().getParent();
}
}
//if it's a file
if (!temp.isDirectory()) {
//set the file name
filename = temp.getName();
}
}
// what would happen here if directoryname == null and file_str == null??
this.state = STATE_INIT;
this.notifyListener();
} catch (java.net.MalformedURLException e) {
this.error(0, "Exception while parsing URL '" + url + "':" + e.getMessage());
} catch (java.net.UnknownHostException e) {
this.error(0, "Exception while initializing download of '" + url + "': Unknown Host '" + e.getMessage() + "'");
} catch (java.io.IOException ioe) {
this.error(0, "I/O Exception while initializing download of '" + url + "':" + ioe.toString());
} catch( Throwable e ){
this.error(0, "Exception while initializing download of '" + url + "':" + e.toString());
}
if ( this.state == STATE_ERROR ){
return;
}
try{
final boolean status_reader_run[] = { true };
this.state = STATE_START;
notifyListener();
this.state = STATE_DOWNLOADING;
notifyListener();
Thread status_reader =
new AEThread( "TorrentDownloader:statusreader" )
{
public void
runSupport()
{
boolean changed_status = false;
while( true ){
try{
Thread.sleep(100);
try{
this_mon.enter();
if ( !status_reader_run[0] ){
break;
}
}finally{
this_mon.exit();
}
String s = con.getResponseMessage();
if ( !s.equals( getStatus())){
if ( !s.toLowerCase().startsWith("error:")){
if ( s.toLowerCase().indexOf( "alive" ) != -1 ){
if ( percentDone < 10 ){
percentDone++;
}
}
int pos = s.indexOf( '%' );
if ( pos != -1 ){
int i;
for ( i=pos-1;i>=0;i--){
char c = s.charAt(i);
if ( !Character.isDigit( c ) && c != ' ' ){
i++;
break;
}
}
try{
percentDone = Integer.parseInt( s.substring( i, pos ).trim());
}catch( Throwable e ){
}
}
setStatus(s);
}else{
error(con.getResponseCode(), s.substring(6));
}
changed_status = true;
}
}catch( Throwable e ){
break;
}
}
if ( changed_status ){
setStatus( "" );
}
}
};
status_reader.setDaemon( true );
status_reader.start();
InputStream in;
try{
in = this.con.getInputStream();
} catch (FileNotFoundException e) {
if (ignoreReponseCode) {
in = this.con.getErrorStream();
} else {
throw e;
}
}finally{
try{
this_mon.enter();
status_reader_run[0] = false;
}finally{
this_mon.exit();
}
}
// handle some servers that return gzip'd torrents even though we don't request it!
String encoding = con.getHeaderField( "content-encoding");
if ( encoding != null ){
if ( encoding.equalsIgnoreCase( "gzip" )){
in = new GZIPInputStream( in );
}else if ( encoding.equalsIgnoreCase( "deflate" )){
in = new InflaterInputStream( in );
}
}
if ( this.state != STATE_ERROR ){
this.file = new File(this.directoryname, filename);
boolean useTempFile = false;
try {
this.file.createNewFile();
useTempFile = !this.file.exists();
} catch (Throwable t) {
useTempFile = true;
}
if (useTempFile) {
this.file = File.createTempFile("AZU", ".torrent", new File(
this.directoryname));
this.file.createNewFile();
}
FileOutputStream fileout = new FileOutputStream(this.file, false);
bufBytes = 0;
int size = (int) UrlUtils.getContentLength(con);
this.percentDone = -1;
do {
if (this.cancel){
break;
}
try {
bufBytes = in.read(buf);
this.readTotal += bufBytes;
if (size != 0){
this.percentDone = (100 * this.readTotal) / size;
}
notifyListener();
} catch (IOException e) {
}
if (bufBytes > 0){
fileout.write(buf, 0, bufBytes);
}
} while (bufBytes > 0);
in.close();
fileout.flush();
fileout.close();
if (this.cancel) {
this.state = STATE_CANCELLED;
if (deleteFileOnCancel) {
this.cleanUpFile();
}
} else {
if (this.readTotal <= 0) {
this.error(0, "No data contained in '" + this.url.toString() + "'");
return;
}
// if the file has come down with a not-so-useful name then we try to rename
// it to something more useful
try{
if ( !filename.toLowerCase().endsWith(".torrent" )){
TOTorrent torrent = TorrentUtils.readFromFile( file, false );
String name = TorrentUtils.getLocalisedName( torrent ) + ".torrent";
File new_file = new File( directoryname, name );
if ( file.renameTo( new_file )){
filename = name;
file = new_file;
}
}
}catch( Throwable e ){
Debug.printStackTrace( e );
}
// TorrentUtils.setObtainedFrom( file, original_url );
this.state = STATE_FINISHED;
}
this.notifyListener();
}
} catch (Exception e) {
if ( !cancel ){
Debug.out("'" + this.directoryname + "' '" + filename + "'", e);
}
this.error(0, "Exception while downloading '" + this.url.toString() + "':" + e.getMessage());
}
}
public boolean
equals(Object obj)
{
if (this == obj){
return true;
}
if ( obj instanceof TorrentDownloaderImpl ){
TorrentDownloaderImpl other = (TorrentDownloaderImpl) obj;
if (other.getURL().equals(this.url.toString())){
File other_file = other.getFile();
File this_file = file;
if ( other_file == this_file ){
return( true );
}
if ( other_file == null || this_file == null ){
return( false );
}
return( other_file.getAbsolutePath().equals(this_file.getAbsolutePath()));
}else{
return false;
}
}else{
return false;
}
}
public int hashCode() { return this.url.hashCode(); }
public String getError() {
return this.error;
}
public void setError(int errCode, String err) {
this.error = err;
this.errCode = errCode;
}
public int getErrorCode() {
return errCode;
}
protected void
setStatus(
String str )
{
status = str;
notifyListener();
}
public String
getStatus()
{
return( status );
}
public java.io.File getFile() {
if ((!this.isAlive()) || (this.file == null))
this.file = new File(this.directoryname, filename);
return this.file;
}
public int getPercentDone() {
return this.percentDone;
}
public int getDownloadState() {
return this.state;
}
public void setDownloadState(int state) {
this.state = state;
}
public String getURL() {
return this.url.toString();
}
public void cancel() {
this.cancel = true;
// if ( con instanceof MagnetConnection ){
// con.disconnect();
// }
}
public void setDownloadPath(String path, String file) {
if (!this.isAlive()) {
if (path != null)
this.directoryname = path;
if (file != null)
filename = file;
}
}
/* (non-Javadoc)
* @see org.gudy.azureus2.core3.torrentdownloader.TorrentDownloader#getTotalRead()
*/
public int getTotalRead() {
return this.readTotal;
}
public byte[] getLastReadBytes() {
if (bufBytes <= 0) {
return new byte[0];
}
byte[] bytes = new byte[bufBytes];
System.arraycopy(buf, 0, bytes, 0, bufBytes);
return bytes;
}
public int getLastReadCount() {
return bufBytes;
}
public void setDeleteFileOnCancel(boolean deleteFileOnCancel) {
this.deleteFileOnCancel = deleteFileOnCancel;
}
public boolean getDeleteFileOnCancel() {
return deleteFileOnCancel;
}
public boolean isIgnoreReponseCode() {
return ignoreReponseCode;
}
public void setIgnoreReponseCode(boolean ignoreReponseCode) {
this.ignoreReponseCode = ignoreReponseCode;
}
}