/*
* Created on 22 juil. 2003
* 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.tracker.client.impl.bt;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.FileNotFoundException;
import java.net.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.zip.GZIPInputStream;
import javax.net.ssl.*;
import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.internat.MessageText;
import org.gudy.azureus2.core3.logging.*;
import org.gudy.azureus2.core3.security.SESecurityManager;
import org.gudy.azureus2.core3.tracker.client.TRTrackerAnnouncer;
import org.gudy.azureus2.core3.tracker.client.TRTrackerScraperClientResolver;
import org.gudy.azureus2.core3.tracker.client.TRTrackerScraperResponse;
import org.gudy.azureus2.core3.tracker.client.impl.TRTrackerScraperImpl;
import org.gudy.azureus2.core3.tracker.client.impl.TRTrackerScraperResponseImpl;
import org.gudy.azureus2.core3.tracker.protocol.udp.*;
import org.gudy.azureus2.core3.tracker.util.TRTrackerUtils;
import org.gudy.azureus2.core3.util.*;
import org.gudy.azureus2.plugins.clientid.ClientIDException;
import org.gudy.azureus2.plugins.clientid.ClientIDGenerator;
import org.gudy.azureus2.pluginsimpl.local.clientid.ClientIDManagerImpl;
import com.aelitis.azureus.core.networkmanager.impl.udp.UDPNetworkManager;
import com.aelitis.net.udp.uc.PRUDPPacket;
import com.aelitis.net.udp.uc.PRUDPPacketHandler;
import com.aelitis.net.udp.uc.PRUDPPacketHandlerException;
import com.aelitis.net.udp.uc.PRUDPPacketHandlerFactory;
/**
* @author Olivier
*
*/
/** One TrackerStatus object handles scrape functionality for all torrents
* on one tracker.
*/
public class TrackerStatus {
// Used to be componentID 2
private final static LogIDs LOGID = LogIDs.TRACKER;
// header for our MessageText messages. Used to shorten code.
private final static String SS = "Scrape.status.";
private final static String SSErr = "Scrape.status.error.";
private final static int FAULTY_SCRAPE_RETRY_INTERVAL = 60 * 10 * 1000;
private final static int NOHASH_RETRY_INTERVAL = 1000 * 60 * 60 * 3; // 3 hrs
/**
* When scraping a single hash, also scrape other hashes that are going to
* be scraped within this range.
*/
private final static int GROUP_SCRAPES_MS = 60 * 15 * 1000;
private final static int GROUP_SCRAPES_LIMIT = 20;
static{
PRUDPTrackerCodecs.registerCodecs();
}
private static List logged_invalid_urls = new ArrayList();
private static ThreadPool thread_pool = new ThreadPool( "TrackerStatus", 10, true ); // queue when full rather than block
private final URL tracker_url;
private boolean az_tracker;
private String scrapeURL = null;
/** key = Torrent hash. values = TRTrackerScraperResponseImpl */
private HashMap hashes;
/** only needed to notify listeners */
private TRTrackerScraperImpl scraper;
private boolean bSingleHashScrapes = false;
protected AEMonitor hashes_mon = new AEMonitor( "TrackerStatus:hashes" );
private final TrackerChecker checker;
private volatile int numActiveScrapes = 0;
public
TrackerStatus(
TrackerChecker _checker,
TRTrackerScraperImpl _scraper,
URL _tracker_url )
{
checker = _checker;
scraper = _scraper;
tracker_url = _tracker_url;
az_tracker = TRTrackerUtils.isAZTracker( tracker_url );
bSingleHashScrapes = COConfigurationManager.getBooleanParameter( "Tracker Client Scrape Single Only" );
String trackerUrl = tracker_url.toString();
hashes = new HashMap();
try {
trackerUrl = trackerUrl.replaceAll(" ", "");
int position = trackerUrl.lastIndexOf('/');
if( position >= 0 &&
trackerUrl.length() >= position+9 &&
trackerUrl.substring(position+1,position+9).equals("announce")) {
this.scrapeURL = trackerUrl.substring(0,position+1) + "scrape" + trackerUrl.substring(position+9);
// System.out.println( "url = " + trackerUrl + ", scrape =" + scrapeURL );
}else if ( trackerUrl.toLowerCase().startsWith("udp:")){
// UDP scrapes aren't based on URL rewriting, just carry on
scrapeURL = trackerUrl;
}else if ( position >= 0 && trackerUrl.lastIndexOf('.') < position ){
// some trackers support /scrape appended but don't have an /announce
// don't do this though it the URL ends with .php (or infact .<anything>)
scrapeURL = trackerUrl + (trackerUrl.endsWith("/")?"":"/") + "scrape";
} else {
if (!logged_invalid_urls.contains(trackerUrl)) {
logged_invalid_urls.add(trackerUrl);
// Error logging is done by the caller, since it has the hash/torrent info
}
}
} catch (Throwable e) {
Debug.printStackTrace( e );
}
}
protected boolean
isTrackerScrapeUrlValid()
{
return scrapeURL != null;
}
protected TRTrackerScraperResponseImpl getHashData(HashWrapper hash) {
try{
hashes_mon.enter();
return (TRTrackerScraperResponseImpl) hashes.get(hash);
}finally{
hashes_mon.exit();
}
}
protected void
updateSingleHash(
HashWrapper hash,
boolean force)
{
updateSingleHash(hash, force, true);
}
protected void
updateSingleHash(
HashWrapper hash,
boolean force,
boolean async )
{
//LGLogger.log( "updateSingleHash():: force=" + force + ", async=" +async+ ", url=" +scrapeURL+ ", hash=" +ByteFormatter.nicePrint(hash, true) );
if ( scrapeURL == null ){
if (Logger.isEnabled()) {
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash), LOGID,
"TrackerStatus: scrape cancelled.. url null"));
}
return;
}
try {
ArrayList responsesToUpdate = new ArrayList();
TRTrackerScraperResponseImpl response;
try{
hashes_mon.enter();
response = (TRTrackerScraperResponseImpl)hashes.get( hash );
}finally{
hashes_mon.exit();
}
if ( response == null ){
response = addHash(hash);
}
long lMainNextScrapeStartTime = response.getNextScrapeStartTime();
if( !force && lMainNextScrapeStartTime > SystemTime.getCurrentTime() ) {
if (Logger.isEnabled()) {
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash), LOGID,
"TrackerStatus: scrape cancelled.. not forced and still "
+ (lMainNextScrapeStartTime - SystemTime.getCurrentTime())
+ "ms"));
}
return;
}
// Set status id to SCRAPING, but leave status string until we actually
// do the scrape
response.setStatus(TRTrackerScraperResponse.ST_SCRAPING,
MessageText.getString(SS + "scraping.queued"));
if (Logger.isEnabled()) {
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash), LOGID,
"TrackerStatus: setting to scraping"));
}
responsesToUpdate.add(response);
// Go through hashes and pick out other scrapes that are "close to" wanting a new scrape.
if (!bSingleHashScrapes){
try{
hashes_mon.enter();
Iterator iterHashes = hashes.values().iterator();
// if we hit trackers with excessive scrapes they respond in varying fashions - from no reply
// to returning 414 to whatever. Rather than hit trackers with large payloads that they then
// reject we limit to MULTI_SCRAPE_LIMIT in one go
while( iterHashes.hasNext() && responsesToUpdate.size() < GROUP_SCRAPES_LIMIT ){
TRTrackerScraperResponseImpl r = (TRTrackerScraperResponseImpl)iterHashes.next();
if ( !r.getHash().equals( hash )) {
long lTimeDiff = Math.abs(lMainNextScrapeStartTime - r.getNextScrapeStartTime());
if (lTimeDiff <= GROUP_SCRAPES_MS && r.getStatus() != TRTrackerScraperResponse.ST_SCRAPING) {
r.setStatus(TRTrackerScraperResponse.ST_SCRAPING,
MessageText.getString(SS + "scraping.queued"));
if (Logger.isEnabled()) {
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(r.getHash()), LOGID,
"TrackerStatus: setting to scraping via group scrape"));
}
responsesToUpdate.add(r);
}
}
}
}finally{
hashes_mon.exit();
}
}
runScrapes(responsesToUpdate, force, async);
}catch( Throwable t ) {
Debug.out( "updateSingleHash() exception", t );
}
}
protected void
runScrapes(
final ArrayList responses,
final boolean force,
boolean async)
{
numActiveScrapes++;
if ( async ){
thread_pool.run(
new AERunnable()
{
public void
runSupport()
{
runScrapesSupport( responses, force );
}
});
if (Logger.isEnabled()) {
Logger.log(new LogEvent(LOGID, "TrackerStatus: queuing '" + scrapeURL
+ "', for " + responses.size() + " of " + hashes.size() + " hashes"
+ ", single_hash_scrapes: " + (bSingleHashScrapes ? "Y" : "N")
+ ", queue size=" + thread_pool.getQueueSize()));
}
}else{
runScrapesSupport( responses, force );
}
}
protected void
runScrapesSupport(
ArrayList responses,
boolean force )
{
try {
if (Logger.isEnabled()) {
Logger.log(new LogEvent(LOGID, "TrackerStatus: scraping '" + scrapeURL
+ "', for " + responses.size() + " of " + hashes.size() + " hashes"
+ ", single_hash_scrapes: " + (bSingleHashScrapes ? "Y" : "N")));
}
boolean original_bSingleHashScrapes = bSingleHashScrapes;
boolean disable_all_scrapes = !COConfigurationManager
.getBooleanParameter("Tracker Client Scrape Enable");
boolean disable_stopped_scrapes = !COConfigurationManager
.getBooleanParameter("Tracker Client Scrape Stopped Enable");
byte[] scrape_reply = null;
try {
// if URL already includes a query component then just append our
// params
HashWrapper one_of_the_hashes = null;
TRTrackerScraperResponseImpl one_of_the_responses = null;
char first_separator = scrapeURL.indexOf('?') == -1 ? '?' : '&';
String info_hash = "";
String flags = "";
for (int i = 0; i < responses.size(); i++) {
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) responses.get(i);
HashWrapper hash = response.getHash();
if (Logger.isEnabled())
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash), LOGID,
"TrackerStatus: scraping, single_hash_scrapes = "
+ bSingleHashScrapes));
if (!scraper.isNetworkEnabled(hash, tracker_url)) {
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR, MessageText
.getString(SS + "networkdisabled"));
scraper.scrapeReceived(response);
} else if ( !force && (
disable_all_scrapes ||
(disable_stopped_scrapes && !scraper.isTorrentRunning(hash)))){
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR, MessageText
.getString(SS + "disabled"));
scraper.scrapeReceived(response);
} else {
response.setStatus(TRTrackerScraperResponse.ST_SCRAPING,
MessageText.getString(SS + "scraping"));
// technically haven't recieved a scrape yet, but we need
// to notify listeners (the ones that display status)
scraper.scrapeReceived(response);
// the client-id stuff RELIES on info_hash being the FIRST
// parameter added by
// us to the URL, so don't change it!
info_hash += ((one_of_the_hashes != null) ? '&' : first_separator)
+ "info_hash=";
info_hash += URLEncoder.encode(
new String(hash.getBytes(), Constants.BYTE_ENCODING),
Constants.BYTE_ENCODING).replaceAll("\\+", "%20");
Object[] extensions = scraper.getExtensions(hash);
if ( extensions != null ){
if ( extensions[0] != null ){
info_hash += (String)extensions[0];
}
flags += (Character)extensions[1];
}else{
flags += TRTrackerScraperClientResolver.FL_NONE;
}
one_of_the_responses = response;
one_of_the_hashes = hash;
}
} // for responses
if (one_of_the_hashes == null)
return;
// set context in case authentication dialog is required
TorrentUtils.setTLSTorrentHash(one_of_the_hashes);
String request = scrapeURL + info_hash;
if ( az_tracker ){
String port_details = TRTrackerUtils.getPortsForURL();
request += port_details;
request += "&azsf=" + flags + "&azver=" + TRTrackerAnnouncer.AZ_TRACKER_VERSION_CURRENT;
}
URL reqUrl = new URL( request );
if (Logger.isEnabled())
Logger.log(new LogEvent(LOGID,
"Accessing scrape interface using url : " + reqUrl));
ByteArrayOutputStream message = new ByteArrayOutputStream();
long scrapeStartTime = SystemTime.getCurrentTime();
URL redirect_url = null;
if (reqUrl.getProtocol().equalsIgnoreCase("udp")) {
// TODO: support multi hash scrapes on UDP
scrapeUDP(reqUrl, message, one_of_the_hashes, one_of_the_responses);
bSingleHashScrapes = true;
} else {
redirect_url = scrapeHTTP(reqUrl, message);
}
scrape_reply = message.toByteArray();
Map map = BDecoder.decode( scrape_reply );
boolean this_is_az_tracker = map.get( "aztracker" ) != null;
if ( az_tracker != this_is_az_tracker ){
az_tracker = this_is_az_tracker;
TRTrackerUtils.setAZTracker( tracker_url, az_tracker );
}
Map mapFiles = map == null ? null : (Map) map.get("files");
if (Logger.isEnabled())
Logger.log(new LogEvent(LOGID, "Response from scrape interface "
+ scrapeURL + ": "
+ ((mapFiles == null) ? "null" : "" + mapFiles.size())
+ " returned"));
int iMinRequestInterval = 0;
if (map != null) {
/* "The spec":
* files
* infohash
* complete
* incomplete
* downloaded
* name
* flags
* min_request_interval
* failure reason
*/
/*
* files infohash complete incomplete downloaded name flags
* min_request_interval
*/
Map mapFlags = (Map) map.get("flags");
if (mapFlags != null) {
Long longScrapeValue = (Long) mapFlags
.get("min_request_interval");
if (longScrapeValue != null)
iMinRequestInterval = longScrapeValue.intValue();
// Tracker owners want this log entry
if (Logger.isEnabled())
Logger.log(new LogEvent(LOGID,
"Received min_request_interval of " + iMinRequestInterval));
}
}
if (mapFiles == null || mapFiles.size() == 0) {
// azureus extension here to handle "failure reason" returned for
// scrapes
byte[] failure_reason_bytes = map == null ? null : (byte[]) map
.get("failure reason");
if (failure_reason_bytes != null) {
long nextScrapeTime = SystemTime.getCurrentTime()
+ ((iMinRequestInterval == 0) ? FAULTY_SCRAPE_RETRY_INTERVAL
: iMinRequestInterval * 1000);
for (int i = 0; i < responses.size(); i++) {
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) responses
.get(i);
response.setNextScrapeStartTime(nextScrapeTime);
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error")
+ new String(failure_reason_bytes,
Constants.DEFAULT_ENCODING));
// notifiy listeners
scraper.scrapeReceived(response);
}
} else {
if (responses.size() > 1) {
// multi were requested, 0 returned. Therefore, multi not
// supported
bSingleHashScrapes = true;
if (Logger.isEnabled())
Logger.log(new LogEvent(LOGID, LogEvent.LT_WARNING, scrapeURL
+ " doesn't properly support " + "multi-hash scrapes"));
for (int i = 0; i < responses.size(); i++) {
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) responses
.get(i);
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error")
+ MessageText.getString(SSErr + "invalid"));
// notifiy listeners
scraper.scrapeReceived(response);
}
} else {
long nextScrapeTime = SystemTime.getCurrentTime()
+ ((iMinRequestInterval == 0) ? NOHASH_RETRY_INTERVAL
: iMinRequestInterval * 1000);
// 1 was requested, 0 returned. Therefore, hash not found.
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) responses
.get(0);
response.setNextScrapeStartTime(nextScrapeTime);
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error")
+ MessageText.getString(SSErr + "nohash"));
// notifiy listeners
scraper.scrapeReceived(response);
}
}
return;
}
/*
* If we requested mutliple hashes, but only one was returned, revert
* to Single Hash Scrapes, but continue on to process the one has that
* was returned (it may be a random one from the list)
*/
if (!bSingleHashScrapes && responses.size() > 1
&& mapFiles.size() == 1) {
bSingleHashScrapes = true;
if (Logger.isEnabled())
Logger.log(new LogEvent(LOGID, LogEvent.LT_WARNING, scrapeURL
+ " only returned " + mapFiles.size()
+ " hash scrape(s), but we asked for " + responses.size()));
}
for (int i = 0; i < responses.size(); i++) {
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) responses
.get(i);
// LGLogger.log( "decoding response #" +i+ ": " +
// ByteFormatter.nicePrint( response.getHash(), true ) );
// retrieve the scrape data for the relevent infohash
Map scrapeMap = (Map) mapFiles.get(new String(response.getHash().getBytes(),
Constants.BYTE_ENCODING));
if (scrapeMap == null) {
// some trackers that return only 1 hash return a random one!
if (responses.size() == 1 || mapFiles.size() != 1) {
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ NOHASH_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error")
+ MessageText.getString(SSErr + "nohash"));
// notifiy listeners
scraper.scrapeReceived(response);
} else {
// This tracker doesn't support multiple hash requests.
// revert status to what it was
response.revertStatus();
if (response.getStatus() == TRTrackerScraperResponse.ST_SCRAPING) {
// System.out.println("Hash " +
// ByteFormatter.nicePrint(response.getHash(), true) + "
// mysteriously reverted to ST_SCRAPING!");
// response.setStatus(TRTrackerScraperResponse.ST_ONLINE, "");
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error")
+ MessageText.getString(SSErr + "invalid"));
} else {
// force single-hash scrapes here
bSingleHashScrapes = true;
// only leave the next retry time if this is the first single
// hash fail
if (original_bSingleHashScrapes) {
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
}
}
// notifiy listeners
scraper.scrapeReceived(response);
// if this was the first scrape request in the list,
// TrackerChecker
// will attempt to scrape again because we didn't reset the
// nextscrapestarttime. But the next time, bSingleHashScrapes
// will be true, and only 1 has will be requested, so there
// will not be infinite looping
}
// System.out.println("scrape: hash missing from reply");
} else {
// retrieve values
int seeds = ((Long) scrapeMap.get("complete")).intValue();
int peers = ((Long) scrapeMap.get("incomplete")).intValue();
// make sure we dont use invalid replies
if (seeds < 0 || peers < 0) {
if (Logger.isEnabled()) {
HashWrapper hash = response.getHash();
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash),
LOGID, "Invalid scrape response from '" + reqUrl
+ "': map = " + scrapeMap));
}
// We requested multiple hashes, but tracker didn't support
// multiple hashes and returned 1 hash. However, that hash is
// invalid because seeds or peers was < 0. So, exit. Scrape
// manager will run scrapes for each individual hash.
if (responses.size() > 1 && bSingleHashScrapes) {
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error")
+ MessageText.getString(SSErr + "invalid"));
scraper.scrapeReceived(response);
continue;
}
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error")
+ MessageText.getString(SSErr + "invalid")
+ " "
+ (seeds < 0 ? MessageText
.getString("MyTorrentsView.seeds")
+ " == " + seeds + ". " : "")
+ (peers < 0 ? MessageText
.getString("MyTorrentsView.peers")
+ " == " + peers + ". " : ""));
scraper.scrapeReceived(response);
continue;
}
int scrapeInterval = TRTrackerScraperResponseImpl
.calcScrapeIntervalSecs(iMinRequestInterval, seeds);
long nextScrapeTime = SystemTime.getCurrentTime()
+ (scrapeInterval * 1000);
response.setNextScrapeStartTime(nextScrapeTime);
// create the response
response.setScrapeStartTime(scrapeStartTime);
response.setSeeds(seeds);
response.setPeers(peers);
response.setStatus(TRTrackerScraperResponse.ST_ONLINE,
MessageText.getString(SS + "ok"));
// notifiy listeners
scraper.scrapeReceived(response);
try{
if ( responses.size() == 1 && redirect_url != null ){
// we only deal with redirects for single urls - if the tracker wants to
// redirect one of a group is has to force single-hash scrapes anyway
String redirect_str = redirect_url.toString();
int s_pos = redirect_str.indexOf( "/scrape" );
if ( s_pos != -1 ){
URL new_url = new URL( redirect_str.substring(0,s_pos) +
"/announce" + redirect_str.substring(s_pos+7));
if ( scraper.redirectTrackerUrl( response.getHash(), tracker_url, new_url )){
removeHash( response.getHash());
}
}
}
}catch( Throwable e ){
Debug.printStackTrace(e);
}
}
} // for responses
} catch (NoClassDefFoundError ignoreSSL) { // javax/net/ssl/SSLSocket
for (int i = 0; i < responses.size(); i++) {
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) responses
.get(i);
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR, MessageText
.getString(SS + "error")
+ ignoreSSL.getMessage());
// notifiy listeners
scraper.scrapeReceived(response);
}
} catch (FileNotFoundException e) {
for (int i = 0; i < responses.size(); i++) {
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) responses
.get(i);
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR, MessageText
.getString(SS + "error")
+ MessageText.getString("DownloadManager.error.filenotfound"));
// notifiy listeners
scraper.scrapeReceived(response);
}
} catch (SocketException e) {
setAllError(e);
} catch (SocketTimeoutException e) {
setAllError(e);
} catch (UnknownHostException e) {
setAllError(e);
} catch (BEncodingException e) {
setAllError(e);
} catch (Exception e) {
// for apache we can get error 414 - URL too long. simplest solution
// for this
// is to fall back to single scraping
String error_message = e.getMessage();
if (error_message != null) {
if (error_message.indexOf(" 500 ") >= 0
|| error_message.indexOf(" 400 ") >= 0
|| error_message.indexOf(" 403 ") >= 0
|| error_message.indexOf(" 404 ") >= 0
|| error_message.indexOf(" 501 ") >= 0) {
// various errors that have a 99% chance of happening on
// any other scrape request
setAllError(e);
return;
}
if (error_message.indexOf("414") != -1
&& !bSingleHashScrapes) {
bSingleHashScrapes = true;
// Skip the setuing up the response. We want to scrape again
return;
}
}
String msg = Debug.getNestedExceptionMessage(e);
if ( scrape_reply != null ){
String trace_data;
if ( scrape_reply.length <= 150 ){
trace_data = new String(scrape_reply);
}else{
trace_data = new String(scrape_reply,0,150) + "...";
}
msg += " [" + trace_data + "]";
}
for (int i = 0; i < responses.size(); i++) {
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) responses
.get(i);
if (Logger.isEnabled()) {
HashWrapper hash = response.getHash();
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash), LOGID,
LogEvent.LT_ERROR, "Error from scrape interface " + scrapeURL
+ " : " + msg + " (" + e.getClass() + ")"));
}
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR, MessageText
.getString(SS + "error")
+ msg);
// notifiy listeners
scraper.scrapeReceived(response);
}
}
} catch (Throwable t) {
Debug.out("runScrapesSupport failed", t);
} finally {
numActiveScrapes--;
}
}
/**
* @param e
*/
private void setAllError(Exception e) {
// Error will apply to ALL hashes, so set all
Object[] values;
try {
values = hashes.values().toArray();
hashes_mon.enter();
} finally {
hashes_mon.exit();
}
String msg = e.getLocalizedMessage();
if(e instanceof BEncodingException)
if(msg.indexOf("html") != -1)
msg = "could not decode response, appears to be a website instead of tracker scrape: "+msg.replace('\n', ' ');
else msg = "bencoded response malformed:"+msg;
for (int i = 0; i < values.length; i++) {
TRTrackerScraperResponseImpl response = (TRTrackerScraperResponseImpl) values[i];
if (Logger.isEnabled()) {
HashWrapper hash = response.getHash();
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash), LOGID,
LogEvent.LT_WARNING, "Error from scrape interface " + scrapeURL
+ " : " + msg));
//e.printStackTrace();
}
response.setNextScrapeStartTime(SystemTime.getCurrentTime()
+ FAULTY_SCRAPE_RETRY_INTERVAL);
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error") + msg + " (IO)");
// notifiy listeners
scraper.scrapeReceived(response);
}
}
protected URL
scrapeHTTP(
URL reqUrl,
ByteArrayOutputStream message )
throws IOException
{
URL redirect_url = null;
TRTrackerUtils.checkForBlacklistedURLs( reqUrl );
reqUrl = TRTrackerUtils.adjustURLForHosting( reqUrl );
reqUrl = AddressUtils.adjustURL( reqUrl );
// System.out.println( "scraping " + reqUrl.toString());
Properties http_properties = new Properties();
http_properties.put( ClientIDGenerator.PR_URL, reqUrl );
try{
ClientIDManagerImpl.getSingleton().generateHTTPProperties( http_properties );
}catch( ClientIDException e ){
throw( new IOException( e.getMessage()));
}
reqUrl = (URL)http_properties.get( ClientIDGenerator.PR_URL );
InputStream is = null;
try{
HttpURLConnection con = null;
if ( reqUrl.getProtocol().equalsIgnoreCase("https")){
// see ConfigurationChecker for SSL client defaults
HttpsURLConnection ssl_con = (HttpsURLConnection)reqUrl.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) reqUrl.openConnection();
}
String user_agent = (String)http_properties.get( ClientIDGenerator.PR_USER_AGENT );
if ( user_agent != null ){
con.setRequestProperty("User-Agent", user_agent );
}
// some trackers support gzip encoding of replies
con.addRequestProperty("Accept-Encoding","gzip");
con.setRequestProperty("Connection", "close" );
con.connect();
is = con.getInputStream();
String resulting_url_str = con.getURL().toString();
if ( !reqUrl.toString().equals( resulting_url_str )){
// some kind of redirect has occurred. Unfortunately we can't get at the underlying
// redirection reason (temp, perm etc) so we support the use of an explicit indicator
// in the resulting url
String marker = "permredirect=1";
int pos = resulting_url_str.indexOf( marker );
if ( pos != -1 ){
pos = pos-1; // include the '&' or '?'
try{
redirect_url =
new URL( resulting_url_str.substring(0,pos));
}catch( Throwable e ){
Debug.printStackTrace(e);
}
}
}
String encoding = con.getHeaderField( "content-encoding");
boolean gzip = encoding != null && encoding.equalsIgnoreCase("gzip");
// System.out.println( "encoding = " + encoding );
if ( gzip ){
is = new GZIPInputStream( is );
}
byte[] data = new byte[1024];
int num_read = 0;
while( true ){
try {
int len = is.read(data);
if ( len > 0 ){
message.write(data, 0, len);
num_read += len;
if ( num_read > 128*1024 ){
// someone's sending us junk, bail out
message.reset();
throw( new Exception( "Tracker response invalid (too large)" ));
}
}else if ( len == 0 ){
Thread.sleep(20);
}else{
break;
}
} catch (Exception e) {
if (Logger.isEnabled())
Logger.log(new LogEvent(LOGID, LogEvent.LT_ERROR,
"Error from scrape interface " + scrapeURL + " : "
+ Debug.getNestedExceptionMessage(e)));
return( null );
}
}
} finally {
if (is != null) {
try {
is.close();
} catch (IOException e1) { }
}
}
return( redirect_url );
}
protected void
scrapeUDP(
URL reqUrl,
ByteArrayOutputStream message,
HashWrapper hash,
TRTrackerScraperResponseImpl current_response )
throws Exception
{
/* reduce network traffic by only scraping UDP when the torrent isn't running as
* UDP version 2 contains scrape data in the announce response
*/
if ( PRUDPPacketTracker.VERSION == 2 &&
scraper.isTorrentDownloading( hash )){
if (Logger.isEnabled())
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash), LOGID,
LogEvent.LT_WARNING, "Scrape of " + reqUrl
+ " skipped as torrent running and "
+ "therefore scrape data available in " + "announce replies"));
// easiest approach here is to brew up a response that looks like the current one
Map map = new HashMap();
Map files = new ByteEncodedKeyHashMap();
map.put( "files", files );
Map file = new HashMap();
byte[] resp_hash = hash.getBytes();
// System.out.println("got hash:" + ByteFormatter.nicePrint( resp_hash, true ));
files.put( new String(resp_hash, Constants.BYTE_ENCODING), file );
file.put( "complete", new Long( current_response.getSeeds()));
file.put( "downloaded", new Long(-1)); // unknown
file.put( "incomplete", new Long(current_response.getPeers()));
byte[] data = BEncoder.encode( map );
message.write( data );
return;
}
reqUrl = TRTrackerUtils.adjustURLForHosting( reqUrl );
PasswordAuthentication auth = null;
boolean auth_ok = false;
try{
if ( reqUrl.getQuery().toLowerCase().indexOf("auth") != -1 ){
auth = SESecurityManager.getPasswordAuthentication( "UDP Tracker", reqUrl );
}
int port = UDPNetworkManager.getSingleton().getUDPNonDataListeningPortNumber();
PRUDPPacketHandler handler = PRUDPPacketHandlerFactory.getHandler( port );
InetSocketAddress destination = new InetSocketAddress(reqUrl.getHost(),reqUrl.getPort()==-1?80:reqUrl.getPort());
String failure_reason = null;
for (int retry_loop=0;retry_loop<PRUDPPacketTracker.DEFAULT_RETRY_COUNT;retry_loop++){
try{
PRUDPPacket connect_request = new PRUDPPacketRequestConnect();
PRUDPPacket reply = handler.sendAndReceive( auth, connect_request, destination );
if ( reply.getAction() == PRUDPPacketTracker.ACT_REPLY_CONNECT ){
PRUDPPacketReplyConnect connect_reply = (PRUDPPacketReplyConnect)reply;
long my_connection = connect_reply.getConnectionId();
PRUDPPacketRequestScrape scrape_request = new PRUDPPacketRequestScrape( my_connection, hash.getBytes() );
reply = handler.sendAndReceive( auth, scrape_request, destination );
if ( reply.getAction() == PRUDPPacketTracker.ACT_REPLY_SCRAPE ){
auth_ok = true;
if ( PRUDPPacketTracker.VERSION == 1 ){
PRUDPPacketReplyScrape scrape_reply = (PRUDPPacketReplyScrape)reply;
Map map = new HashMap();
/*
int interval = scrape_reply.getInterval();
if ( interval != 0 ){
map.put( "interval", new Long(interval ));
}
*/
byte[][] reply_hashes = scrape_reply.getHashes();
int[] complete = scrape_reply.getComplete();
int[] downloaded = scrape_reply.getDownloaded();
int[] incomplete = scrape_reply.getIncomplete();
Map files = new ByteEncodedKeyHashMap();
map.put( "files", files );
for (int i=0;i<reply_hashes.length;i++){
Map file = new HashMap();
byte[] resp_hash = reply_hashes[i];
// System.out.println("got hash:" + ByteFormatter.nicePrint( resp_hash, true ));
files.put( new String(resp_hash, Constants.BYTE_ENCODING), file );
file.put( "complete", new Long(complete[i]));
file.put( "downloaded", new Long(downloaded[i]));
file.put( "incomplete", new Long(incomplete[i]));
}
byte[] data = BEncoder.encode( map );
message.write( data );
return;
}else{
PRUDPPacketReplyScrape2 scrape_reply = (PRUDPPacketReplyScrape2)reply;
Map map = new HashMap();
/*
int interval = scrape_reply.getInterval();
if ( interval != 0 ){
map.put( "interval", new Long(interval ));
}
*/
int[] complete = scrape_reply.getComplete();
int[] downloaded = scrape_reply.getDownloaded();
int[] incomplete = scrape_reply.getIncomplete();
Map files = new ByteEncodedKeyHashMap();
map.put( "files", files );
Map file = new HashMap();
byte[] resp_hash = hash.getBytes();
// System.out.println("got hash:" + ByteFormatter.nicePrint( resp_hash, true ));
files.put( new String(resp_hash, Constants.BYTE_ENCODING), file );
file.put( "complete", new Long(complete[0]));
file.put( "downloaded", new Long(downloaded[0]));
file.put( "incomplete", new Long(incomplete[0]));
byte[] data = BEncoder.encode( map );
message.write( data );
return;
}
}else{
failure_reason = ((PRUDPPacketReplyError)reply).getMessage();
if (Logger.isEnabled())
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash),
LOGID, LogEvent.LT_ERROR,
"Response from scrape interface : " + failure_reason));
break;
}
}else{
failure_reason = ((PRUDPPacketReplyError)reply).getMessage();
if (Logger.isEnabled())
Logger.log(new LogEvent(TorrentUtils.getDownloadManager(hash), LOGID,
LogEvent.LT_ERROR, "Response from scrape interface : "
+ ((PRUDPPacketReplyError) reply).getMessage()));
break;
}
}catch( PRUDPPacketHandlerException e ){
if ( e.getMessage() == null || e.getMessage().indexOf("timed out") == -1 ){
throw( e );
}
failure_reason = "Timeout";
}
}
if ( failure_reason != null ){
Map map = new HashMap();
map.put( "failure reason", failure_reason.getBytes());
byte[] data = BEncoder.encode( map );
message.write( data );
}
}finally{
if ( auth != null ){
SESecurityManager.setPasswordAuthenticationOutcome( TRTrackerBTAnnouncerImpl.UDP_REALM, reqUrl, auth_ok );
}
}
}
protected String
getURLParam(
String url,
String param )
{
int p1 = url.indexOf( param + "=" );
if ( p1 == -1 ){
return( null );
}
int p2 = url.indexOf( "&", p1 );
if ( p2 == -1 ){
return( url.substring(p1+param.length()+1));
}
return( url.substring(p1+param.length()+1,p2));
}
protected TRTrackerScraperResponseImpl addHash(HashWrapper hash) {
TRTrackerScraperResponseImpl response;
try{
hashes_mon.enter();
response = (TRTrackerScraperResponseImpl)hashes.get( hash );
if ( response == null ){
response = new TRTrackerBTScraperResponseImpl(this, hash);
if ( scrapeURL == null ){
response.setStatus(TRTrackerScraperResponse.ST_ERROR,
MessageText.getString(SS + "error") +
MessageText.getString(SSErr + "badURL"));
}else{
response.setStatus(TRTrackerScraperResponse.ST_INITIALIZING,
MessageText.getString(SS + "initializing"));
}
response.setNextScrapeStartTime(checker.getNextScrapeCheckOn());
hashes.put( hash, response);
}
}finally{
hashes_mon.exit();
}
//notifiy listeners
scraper.scrapeReceived( response );
return response;
}
protected void removeHash(HashWrapper hash) {
try{
hashes_mon.enter();
hashes.remove( hash );
}finally{
hashes_mon.exit();
}
}
protected URL
getTrackerURL()
{
return( tracker_url );
}
protected Map getHashes() {
return hashes;
}
protected AEMonitor
getHashesMonitor()
{
return( hashes_mon );
}
protected void scrapeReceived(TRTrackerScraperResponse response) {
scraper.scrapeReceived(response);
}
public boolean getSupportsMultipeHashScrapes() {
return !bSingleHashScrapes;
}
protected String
getString()
{
return( tracker_url + ", " + scrapeURL + ", multi-scrape=" + !bSingleHashScrapes );
}
public int getNumActiveScrapes() {
return numActiveScrapes;
}
}
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