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qBittorrent
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qBittorrent/src/bittorrent.cpp

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/*
* Bittorrent Client using Qt4 and libtorrent.
* Copyright (C) 2006 Christophe Dumez
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contact : chris@qbittorrent.org
*/
#include <QDir>
#include <QTime>
#include <QString>
#include <QTimer>
#include "bittorrent.h"
#include "misc.h"
#include "downloadThread.h"
#include "deleteThread.h"
#include <libtorrent/extensions/metadata_transfer.hpp>
#include <libtorrent/extensions/ut_pex.hpp>
#include <libtorrent/entry.hpp>
#include <libtorrent/bencode.hpp>
#include <libtorrent/identify_client.hpp>
#include <libtorrent/alert_types.hpp>
#include <libtorrent/torrent_info.hpp>
#include <boost/filesystem/exception.hpp>
#define ETAS_MAX_VALUES 3
#define ETA_REFRESH_INTERVAL 10000
#define MAX_TRACKER_ERRORS 2
// Main constructor
bittorrent::bittorrent() : timerScan(0), DHTEnabled(false), preAllocateAll(false), addInPause(false), maxConnecsPerTorrent(500), maxUploadsPerTorrent(4), max_ratio(-1) {
// To avoid some exceptions
fs::path::default_name_check(fs::no_check);
// Creating bittorrent session
s = new session(fingerprint("qB", VERSION_MAJOR, VERSION_MINOR, VERSION_BUGFIX, 0));
// Set severity level of libtorrent session
s->set_severity_level(alert::info);
// Enabling metadata plugin
s->add_extension(&create_metadata_plugin);
timerAlerts = new QTimer();
connect(timerAlerts, SIGNAL(timeout()), this, SLOT(readAlerts()));
timerAlerts->start(3000);
ETARefresher = new QTimer();
connect(ETARefresher, SIGNAL(timeout()), this, SLOT(updateETAs()));
ETARefresher->start(ETA_REFRESH_INTERVAL);
// To download from urls
downloader = new downloadThread(this);
connect(downloader, SIGNAL(downloadFinished(QString, QString)), this, SLOT(processDownloadedFile(QString, QString)));
connect(downloader, SIGNAL(downloadFailure(QString, QString)), this, SLOT(handleDownloadFailure(QString, QString)));
// File deleter (thread)
deleter = new deleteThread(this);
qDebug("* BTSession constructed");
}
// Main destructor
bittorrent::~bittorrent() {
// Disable directory scanning
disableDirectoryScanning();
// Delete our objects
delete deleter;
delete timerAlerts;
delete ETARefresher;
delete downloader;
// Delete BT session
delete s;
}
void bittorrent::preAllocateAllFiles(bool b) {
preAllocateAll = b;
// Reload All Torrents
std::vector<torrent_handle> handles = s->get_torrents();
unsigned int nbHandles = handles.size();
for(unsigned int i=0; i<nbHandles; ++i) {
QTorrentHandle h = handles[i];
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
continue;
}
pauseAndReloadTorrent(h, b);
}
}
void bittorrent::deleteBigRatios() {
if(max_ratio == -1) return;
QString hash;
foreach(hash, finishedTorrents) {
QTorrentHandle h = getTorrentHandle(hash);
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
continue;
}
QString hash = h.hash();
if(getRealRatio(hash) > max_ratio) {
QString fileName = h.name();
deleteTorrent(hash);
emit torrent_deleted(hash, fileName, true);
}
}
}
void bittorrent::setDownloadLimit(QString hash, long val) {
QTorrentHandle h = getTorrentHandle(hash);
if(h.is_valid())
h.set_download_limit(val);
saveTorrentSpeedLimits(hash);
}
void bittorrent::setUploadLimit(QString hash, long val) {
qDebug("Set upload limit rate to %ld", val);
QTorrentHandle h = getTorrentHandle(hash);
if(h.is_valid())
h.set_upload_limit(val);
saveTorrentSpeedLimits(hash);
}
void bittorrent::handleDownloadFailure(QString url, QString reason) {
emit downloadFromUrlFailure(url, reason);
}
void bittorrent::startTorrentsInPause(bool b) {
addInPause = b;
}
void bittorrent::updateETAs() {
QString hash;
foreach(hash, unfinishedTorrents) {
QTorrentHandle h = getTorrentHandle(hash);
if(h.is_valid()) {
if(h.is_paused()) continue;
QString hash = h.hash();
QList<qlonglong> listEtas = ETAstats.value(hash, QList<qlonglong>());
// XXX: We can still get an overflow if remaining file size is approximately
// 8.38*10^5 TiB (let's assume this can't happen)
if(h.download_payload_rate() > 0.1) {
if(listEtas.size() == ETAS_MAX_VALUES) {
listEtas.removeFirst();
}
listEtas << (qlonglong)((h.actual_size()-h.total_wanted_done())/(double)h.download_payload_rate());
ETAstats[hash] = listEtas;
qlonglong moy = 0;
qlonglong val;
unsigned int nbETAs = listEtas.size();
Q_ASSERT(nbETAs);
foreach(val, listEtas) {
moy += (qlonglong)((double)val/(double)nbETAs);
}
Q_ASSERT(moy >= 0);
ETAs[hash] = moy;
} else {
// Speed is too low, we don't want an overflow.
if(ETAstats.contains(hash)) {
ETAstats.remove(hash);
}
if(ETAs.contains(hash)) {
ETAs.remove(hash);
}
}
}
}
// Delete big ratios
if(max_ratio != -1)
deleteBigRatios();
}
long bittorrent::getETA(QString hash) const{
return ETAs.value(hash, -1);
}
// Return the torrent handle, given its hash
QTorrentHandle bittorrent::getTorrentHandle(QString hash) const{
return QTorrentHandle(s->find_torrent(misc::fromString<sha1_hash>((hash.toStdString()))));
}
// Return true if the torrent corresponding to the
// hash is paused
bool bittorrent::isPaused(QString hash) const{
QTorrentHandle h = getTorrentHandle(hash);
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
return true;
}
if(torrentsToPauseAfterChecking.contains(hash))
return true;
return h.is_paused();
}
// Delete a torrent from the session, given its hash
// permanent = true means that the torrent will be removed from the hard-drive too
void bittorrent::deleteTorrent(QString hash, bool permanent) {
qDebug("Deleting torrent with hash: %s", hash.toUtf8().data());
QTorrentHandle h = getTorrentHandle(hash);
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
return;
}
QString savePath = h.save_path();
QString fileName = h.name();
arborescence *files_arb = 0;
if(permanent){
files_arb = new arborescence(h.get_torrent_info());
}
// Remove it from session
s->remove_torrent(h.get_torrent_handle());
// Remove it from torrent backup directory
QDir torrentBackup(misc::qBittorrentPath() + "BT_backup");
QStringList filters;
filters << hash+".*";
QStringList files = torrentBackup.entryList(filters, QDir::Files, QDir::Unsorted);
QString file;
foreach(file, files) {
torrentBackup.remove(file);
}
// Remove it from ETAs hash tables
ETAstats.remove(hash);
ETAs.remove(hash);
// Remove tracker errors
trackersErrors.remove(hash);
// Remove from reloadingTorrents if reloading
if(reloadingTorrents.contains(hash)) {
reloadingTorrents.remove(hash);
}
// Remove it from ratio table
ratioData.remove(hash);
int index = finishedTorrents.indexOf(hash);
if(index != -1) {
finishedTorrents.removeAt(index);
}else{
index = unfinishedTorrents.indexOf(hash);
if(index != -1) {
unfinishedTorrents.removeAt(index);
}else{
std::cerr << "Error: Torrent " << hash.toStdString() << " is neither in finished or unfinished list\n";
}
}
if(permanent && files_arb != 0) {
// Remove from Hard drive
qDebug("Removing this on hard drive: %s", qPrintable(savePath+QDir::separator()+fileName));
// Deleting in a thread to avoid GUI freeze
deleter->deleteTorrent(savePath, files_arb);
}
}
// Return a list of hashes for the finished torrents
QStringList bittorrent::getFinishedTorrents() const {
return finishedTorrents;
}
QStringList bittorrent::getUnfinishedTorrents() const {
return unfinishedTorrents;
}
bool bittorrent::isFinished(QString hash) const {
return finishedTorrents.contains(hash);
}
// Remove the given hash from the list of finished torrents
void bittorrent::setUnfinishedTorrent(QString hash) {
if(QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".finished")){
QFile::remove(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".finished");
}
int index = finishedTorrents.indexOf(hash);
if(index != -1) {
finishedTorrents.removeAt(index);
}
if(!unfinishedTorrents.contains(hash)) {
unfinishedTorrents << hash;
}
}
// Add the given hash to the list of finished torrents
void bittorrent::setFinishedTorrent(QString hash) {
if(!QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".finished")) {
QFile finished_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".finished");
finished_file.open(QIODevice::WriteOnly | QIODevice::Text);
finished_file.close();
}
if(!finishedTorrents.contains(hash)) {
finishedTorrents << hash;
}
int index = unfinishedTorrents.indexOf(hash);
if(index != -1) {
unfinishedTorrents.removeAt(index);
}
// Remove it from ETAs hash tables
ETAstats.remove(hash);
ETAs.remove(hash);
}
// Pause a running torrent
bool bittorrent::pauseTorrent(QString hash) {
bool change = false;
QTorrentHandle h = getTorrentHandle(hash);
if(h.is_valid() && !h.is_paused()) {
h.pause();
change = true;
qDebug("Torrent paused successfully");
}else{
if(!h.is_valid()) {
qDebug("Could not pause torrent %s, reason: invalid", hash.toUtf8().data());
}else{
qDebug("Could not pause torrent %s, reason: already paused", hash.toUtf8().data());
}
}
// Create .paused file if necessary
if(!QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".paused")) {
QFile paused_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".paused");
paused_file.open(QIODevice::WriteOnly | QIODevice::Text);
paused_file.close();
}
// Remove it from ETAs hash tables
ETAstats.remove(hash);
ETAs.remove(hash);
return change;
}
// Resume a torrent in paused state
bool bittorrent::resumeTorrent(QString hash) {
bool success = false;
QTorrentHandle h = getTorrentHandle(hash);
if(h.is_valid() && h.is_paused()) {
h.resume();
success = true;
}
// Delete .paused file
if(QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".paused"))
QFile::remove(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".paused");
int index = torrentsToPauseAfterChecking.indexOf(hash);
if(index != -1) {
torrentsToPauseAfterChecking.removeAt(index);
success = true;
}
return success;
}
void bittorrent::loadWebSeeds(QString hash) {
QFile urlseeds_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".urlseeds");
if(!urlseeds_file.open(QIODevice::ReadOnly | QIODevice::Text)) return;
QByteArray urlseeds_lines = urlseeds_file.readAll();
urlseeds_file.close();
QList<QByteArray> url_seeds = urlseeds_lines.split('\n');
QByteArray url_seed;
QTorrentHandle h = getTorrentHandle(hash);
// First remove from the torrent the url seeds that were deleted
// in a previous session
QStringList seeds_to_delete;
QStringList existing_seeds = h.url_seeds();
QString existing_seed;
foreach(existing_seed, existing_seeds) {
if(!url_seeds.contains(existing_seed.toUtf8())) {
seeds_to_delete << existing_seed;
}
}
foreach(existing_seed, seeds_to_delete) {
h.remove_url_seed(existing_seed);
}
// Add the ones that were added in a previous session
foreach(url_seed, url_seeds) {
if(!url_seed.isEmpty()) {
// XXX: Should we check if it is already in the list before adding it
// or is libtorrent clever enough to know
h.add_url_seed(url_seed);
}
}
}
// Add a torrent to the bittorrent session
void bittorrent::addTorrent(QString path, bool fromScanDir, QString from_url, bool resumed) {
QTorrentHandle h;
entry resume_data;
bool fastResume=false;
QDir torrentBackup(misc::qBittorrentPath() + "BT_backup");
QString file, dest_file, scan_dir;
// Checking if BT_backup Dir exists
// create it if it is not
if(! torrentBackup.exists()) {
if(! torrentBackup.mkpath(torrentBackup.path())) {
std::cerr << "Couldn't create the directory: '" << torrentBackup.path().toUtf8().data() << "'\n";
exit(1);
}
}
// Processing torrents
file = path.trimmed().replace("file://", "", Qt::CaseInsensitive);
if(file.isEmpty()) {
return;
}
Q_ASSERT(!file.startsWith("http://", Qt::CaseInsensitive) && !file.startsWith("https://", Qt::CaseInsensitive) && !file.startsWith("ftp://", Qt::CaseInsensitive));
qDebug("Adding %s to download list", file.toUtf8().data());
std::ifstream in(file.toUtf8().data(), std::ios_base::binary);
in.unsetf(std::ios_base::skipws);
try{
// Decode torrent file
entry e = bdecode(std::istream_iterator<char>(in), std::istream_iterator<char>());
// Getting torrent file informations
boost::intrusive_ptr<torrent_info> t(new torrent_info(e));
qDebug(" -> Hash: %s", misc::toString(t->info_hash()).c_str());
qDebug(" -> Name: %s", t->name().c_str());
QString hash = misc::toQString(t->info_hash());
if(file.startsWith(torrentBackup.path())) {
QFileInfo fi(file);
QString old_hash = fi.baseName();
if(old_hash != hash){
qDebug("* ERROR: Strange, hash changed from %s to %s", old_hash.toUtf8().data(), hash.toUtf8().data());
}
}
if(s->find_torrent(t->info_hash()).is_valid()) {
qDebug("/!\\ Torrent is already in download list");
// Update info Bar
if(!fromScanDir) {
if(!from_url.isNull()) {
// If download from url, remove temp file
QFile::remove(file);
emit duplicateTorrent(from_url);
}else{
emit duplicateTorrent(file);
}
}else{
// Delete torrent from scan dir
QFile::remove(file);
}
return;
}
//Getting fast resume data if existing
if(torrentBackup.exists(hash+".fastresume")) {
try{
std::stringstream strStream;
strStream << hash.toStdString() << ".fastresume";
boost::filesystem::ifstream resume_file(fs::path(torrentBackup.path().toUtf8().data()) / strStream.str(), std::ios_base::binary);
resume_file.unsetf(std::ios_base::skipws);
resume_data = bdecode(std::istream_iterator<char>(resume_file), std::istream_iterator<char>());
fastResume=true;
}catch (invalid_encoding&) {}
catch (fs::filesystem_error&) {}
}
QString savePath = getSavePath(hash);
// Adding files to bittorrent session
if(preAllocateAll) {
h = s->add_torrent(t, fs::path(savePath.toUtf8().data()), resume_data, storage_mode_allocate, true);
qDebug(" -> Full allocation mode");
}else{
h = s->add_torrent(t, fs::path(savePath.toUtf8().data()), resume_data, storage_mode_sparse, true);
qDebug(" -> Sparse allocation mode");
}
if(!h.is_valid()) {
// No need to keep on, it failed.
qDebug("/!\\ Error: Invalid handle");
// If download from url, remove temp file
if(!from_url.isNull()) QFile::remove(file);
return;
}
// Connections limit per torrent
h.set_max_connections(maxConnecsPerTorrent);
// Uploads limit per torrent
h.set_max_uploads(maxUploadsPerTorrent);
// Load filtered files
loadFilesPriorities(h);
// Load custom url seeds
loadWebSeeds(hash);
// Load speed limit from hard drive
loadTorrentSpeedLimits(hash);
// Load ratio data
loadDownloadUploadForTorrent(hash);
// Load trackers
bool loaded_trackers = loadTrackerFile(hash);
// Doing this to order trackers well
if(!loaded_trackers) {
saveTrackerFile(hash);
loadTrackerFile(hash);
}
QString newFile = torrentBackup.path() + QDir::separator() + hash + ".torrent";
if(file != newFile) {
// Delete file from torrentBackup directory in case it exists because
// QFile::copy() do not overwrite
QFile::remove(newFile);
// Copy it to torrentBackup directory
QFile::copy(file, newFile);
}
// Pause torrent if it was paused last time
if((!resumed && addInPause) || QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".paused")) {
torrentsToPauseAfterChecking << hash;
qDebug("Adding a torrent to the torrentsToPauseAfterChecking list");
}
// Incremental download
if(QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".incremental")) {
qDebug("Incremental download enabled for %s", t->name().c_str());
h.set_sequenced_download_threshold(1);
}
// Start torrent because it was added in paused state
h.resume();
if(QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".finished")) {
finishedTorrents << hash;
}else{
unfinishedTorrents << hash;
}
// If download from url, remove temp file
if(!from_url.isNull()) QFile::remove(file);
// Delete from scan dir to avoid trying to download it again
if(fromScanDir) {
QFile::remove(file);
}
// Send torrent addition signal
if(!from_url.isNull()) {
emit addedTorrent(from_url, h, fastResume);
}else{
emit addedTorrent(file, h, fastResume);
}
}catch (invalid_encoding& e) { // Raised by bdecode()
std::cerr << "Could not decode file, reason: " << e.what() << '\n';
// Display warning to tell user we can't decode the torrent file
if(!from_url.isNull()) {
emit invalidTorrent(from_url);
}else{
emit invalidTorrent(file);
}
if(fromScanDir) {
// Remove .corrupt file in case it already exists
QFile::remove(file+".corrupt");
//Rename file extension so that it won't display error message more than once
QFile::rename(file,file+".corrupt");
}
}
catch (invalid_torrent_file&) { // Raised by torrent_info constructor
// Display warning to tell user we can't decode the torrent file
if(!from_url.isNull()) {
emit invalidTorrent(from_url);
}else{
emit invalidTorrent(file);
}
if(fromScanDir) {
// Remove .corrupt file in case it already exists
QFile::remove(file+".corrupt");
//Rename file extension so that it won't display error message more than once
QFile::rename(file,file+".corrupt");
}
}
}
// Check in .priorities file if the user filtered files
// in this torrent.
bool bittorrent::has_filtered_files(QString hash) const{
QFile pieces_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".priorities");
// Read saved file
if(!pieces_file.open(QIODevice::ReadOnly | QIODevice::Text)) {
return false;
}
QByteArray pieces_text = pieces_file.readAll();
pieces_file.close();
QList<QByteArray> pieces_priorities_list = pieces_text.split('\n');
unsigned int listSize = pieces_priorities_list.size();
for(unsigned int i=0; i<listSize-1; ++i) {
int priority = pieces_priorities_list.at(i).toInt();
if( priority < 0 || priority > 7) {
priority = 1;
}
if(!priority) {
return true;
}
}
return false;
}
// Set the maximum number of opened connections
void bittorrent::setMaxConnections(int maxConnec) {
s->set_max_connections(maxConnec);
}
void bittorrent::setMaxConnectionsPerTorrent(int max) {
maxConnecsPerTorrent = max;
// Apply this to all session torrents
std::vector<torrent_handle> handles = s->get_torrents();
unsigned int nbHandles = handles.size();
for(unsigned int i=0; i<nbHandles; ++i) {
QTorrentHandle h = handles[i];
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
continue;
}
h.set_max_connections(max);
}
}
void bittorrent::setMaxUploadsPerTorrent(int max) {
maxUploadsPerTorrent = max;
// Apply this to all session torrents
std::vector<torrent_handle> handles = s->get_torrents();
unsigned int nbHandles = handles.size();
for(unsigned int i=0; i<nbHandles; ++i) {
QTorrentHandle h = handles[i];
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
continue;
}
h.set_max_uploads(max);
}
}
// Return DHT state
bool bittorrent::isDHTEnabled() const{
return DHTEnabled;
}
void bittorrent::enableUPnP(bool b) {
if(b) {
s->start_upnp();
} else {
s->stop_upnp();
}
}
void bittorrent::enableNATPMP(bool b) {
if(b) {
s->start_natpmp();
} else {
s->stop_natpmp();
}
}
void bittorrent::enableLSD(bool b) {
if(b) {
s->start_lsd();
} else {
s->stop_lsd();
}
}
// Enable DHT
bool bittorrent::enableDHT(bool b) {
if(b) {
if(!DHTEnabled) {
boost::filesystem::ifstream dht_state_file((misc::qBittorrentPath()+QString::fromUtf8("dht_state")).toUtf8().data(), std::ios_base::binary);
dht_state_file.unsetf(std::ios_base::skipws);
entry dht_state;
try{
dht_state = bdecode(std::istream_iterator<char>(dht_state_file), std::istream_iterator<char>());
}catch (std::exception&) {}
try {
s->start_dht(dht_state);
s->add_dht_router(std::make_pair(std::string("router.bittorrent.com"), 6881));
s->add_dht_router(std::make_pair(std::string("router.utorrent.com"), 6881));
s->add_dht_router(std::make_pair(std::string("router.bitcomet.com"), 6881));
DHTEnabled = true;
qDebug("DHT enabled");
}catch(std::exception e) {
qDebug("Could not enable DHT, reason: %s", e.what());
return false;
}
}
} else {
if(DHTEnabled) {
DHTEnabled = false;
s->stop_dht();
qDebug("DHT disabled");
}
}
return true;
}
void bittorrent::saveTorrentSpeedLimits(QString hash) {
qDebug("Saving speedLimits file for %s", hash.toUtf8().data());
QTorrentHandle h = getTorrentHandle(hash);
int download_limit = h.download_limit();
int upload_limit = h.upload_limit();
QFile speeds_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".speedLimits");
if(!speeds_file.open(QIODevice::WriteOnly | QIODevice::Text)) {
qDebug("* Error: Couldn't open speed limits file for torrent: %s", hash.toUtf8().data());
return;
}
speeds_file.write(misc::toQByteArray(download_limit)+QByteArray(" ")+misc::toQByteArray(upload_limit));
speeds_file.close();
}
void bittorrent::loadTorrentSpeedLimits(QString hash) {
// qDebug("Loading speedLimits file for %s", hash.toUtf8().data());
QTorrentHandle h = getTorrentHandle(hash);
QFile speeds_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".speedLimits");
if(!speeds_file.open(QIODevice::ReadOnly | QIODevice::Text)) {
return;
}
QByteArray speed_limits = speeds_file.readAll();
speeds_file.close();
QList<QByteArray> speeds = speed_limits.split(' ');
if(speeds.size() != 2) {
std::cerr << "Invalid .speedLimits file for " << hash.toStdString() << '\n';
return;
}
h.set_download_limit(speeds.at(0).toInt());
h.set_upload_limit(speeds.at(1).toInt());
}
// Read pieces priorities from .priorities file
// and ask QTorrentHandle to consider them
void bittorrent::loadFilesPriorities(QTorrentHandle &h) {
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
return;
}
unsigned int nbFiles = h.num_files();
QString hash = h.hash();
QFile pieces_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".priorities");
if(!pieces_file.exists()){
return;
}
// Read saved file
if(!pieces_file.open(QIODevice::ReadOnly | QIODevice::Text)) {
qDebug("* Error: Couldn't open priorities file: %s", hash.toUtf8().data());
return;
}
QByteArray pieces_priorities = pieces_file.readAll();
pieces_file.close();
QList<QByteArray> pieces_priorities_list = pieces_priorities.split('\n');
if((unsigned int)pieces_priorities_list.size() != nbFiles+1) {
std::cerr << "* Error: Corrupted priorities file\n";
return;
}
std::vector<int> v;
for(unsigned int i=0; i<nbFiles; ++i) {
int priority = pieces_priorities_list.at(i).toInt();
if( priority < 0 || priority > 7) {
priority = 1;
}
//qDebug("Setting piece piority to %d", priority);
v.push_back(priority);
}
h.prioritize_files(v);
}
void bittorrent::loadDownloadUploadForTorrent(QString hash) {
QDir torrentBackup(misc::qBittorrentPath() + "BT_backup");
// Checking if torrentBackup Dir exists
// create it if it is not
if(! torrentBackup.exists()) {
torrentBackup.mkpath(torrentBackup.path());
}
// qDebug("Loading ratio data for %s", hash.toUtf8().data());
QFile ratio_file(torrentBackup.path()+QDir::separator()+ hash + ".ratio");
if(!ratio_file.exists() || !ratio_file.open(QIODevice::ReadOnly | QIODevice::Text)) {
return;
}
QByteArray data = ratio_file.readAll();
QList<QByteArray> data_list = data.split(' ');
if(data_list.size() != 2) {
std::cerr << "Corrupted ratio file for torrent: " << hash.toStdString() << '\n';
return;
}
QPair<size_type,size_type> downUp;
downUp.first = (size_type)data_list.at(0).toLongLong();
downUp.second = (size_type)data_list.at(1).toLongLong();
if(downUp.first < 0 || downUp.second < 0) {
qDebug("** Overflow in ratio!!! fixing...");
downUp.first = 0;
downUp.second = 0;
}
ratioData[hash] = downUp;
}
float bittorrent::getRealRatio(QString hash) const{
QPair<size_type,size_type> downUpInfo = ratioData.value(hash, QPair<size_type,size_type>(0,0));
size_type download = downUpInfo.first;
size_type upload = downUpInfo.second;
QTorrentHandle h = getTorrentHandle(hash);
download += h.total_payload_download();
Q_ASSERT(download >= 0);
upload += h.total_payload_upload();
Q_ASSERT(upload >= 0);
if(download == 0){
if(upload == 0)
return 1.;
return 10.;
}
float ratio = (double)upload / (double)download;
Q_ASSERT(ratio >= 0.);
if(ratio > 10.)
ratio = 10.;
return ratio;
}
// To remember share ratio or a torrent, we must save current
// total_upload and total_upload and reload them on startup
void bittorrent::saveDownloadUploadForTorrent(QString hash) {
qDebug("Saving ratio data for torrent %s", hash.toUtf8().data());
QDir torrentBackup(misc::qBittorrentPath() + QString::fromUtf8("BT_backup"));
// Checking if torrentBackup Dir exists
// create it if it is not
if(! torrentBackup.exists()) {
torrentBackup.mkpath(torrentBackup.path());
}
QTorrentHandle h = getTorrentHandle(hash);
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
return;
}
QPair<size_type,size_type> ratioInfo = ratioData.value(hash, QPair<size_type, size_type>(0,0));
size_type download = h.total_payload_download();
download += ratioInfo.first;
size_type upload = h.total_payload_upload();
upload += ratioInfo.second;
Q_ASSERT(download >= 0 && upload >= 0);
QFile ratio_file(torrentBackup.path()+QDir::separator()+ hash + QString::fromUtf8(".ratio"));
if(!ratio_file.open(QIODevice::WriteOnly | QIODevice::Text)) {
std::cerr << "Couldn't save ratio data for torrent: " << hash.toStdString() << '\n';
return;
}
ratio_file.write(misc::toQByteArray(download) + QByteArray(" ") + misc::toQByteArray(upload));
ratio_file.close();
}
// Save fastresume data for all torrents
// and remove them from the session
void bittorrent::saveFastResumeAndRatioData() {
qDebug("Saving fast resume and ratio data");
QString file;
QDir torrentBackup(misc::qBittorrentPath() + "BT_backup");
// Checking if torrentBackup Dir exists
// create it if it is not
if(! torrentBackup.exists()) {
torrentBackup.mkpath(torrentBackup.path());
}
// Pause torrents
std::vector<torrent_handle> handles = s->get_torrents();
for(unsigned int i=0; i<handles.size(); ++i) {
QTorrentHandle h = handles[i];
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
continue;
}
// Pause download (needed before fast resume writing)
if(!h.is_paused()){
waitingForPause << h.hash();
h.pause();
}
}
// Write fast resume data
for(unsigned int i=0; i<handles.size(); ++i) {
QTorrentHandle h = handles[i];
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
continue;
}
QString hash = h.hash();
while(waitingForPause.contains(hash)) {
//qDebug("Sleeping while waiting that %s is paused", misc::toString(h.info_hash()).c_str());
SleeperThread::msleep(300);
readAlerts();
}
// Extracting resume data
if (h.has_metadata()) {
if(QFile::exists(torrentBackup.path()+QDir::separator()+hash+".torrent")) {
// Remove old .fastresume data in case it exists
QFile::remove(torrentBackup.path()+QDir::separator()+hash + ".fastresume");
// Write fast resume data
entry resumeData = h.write_resume_data();
file = hash + ".fastresume";
boost::filesystem::ofstream out(fs::path(torrentBackup.path().toUtf8().data()) / file.toUtf8().data(), std::ios_base::binary);
out.unsetf(std::ios_base::skipws);
bencode(std::ostream_iterator<char>(out), resumeData);
}
// Save ratio data
saveDownloadUploadForTorrent(hash);
// Save trackers
saveTrackerFile(hash);
}
// Remove torrent
s->remove_torrent(h.get_torrent_handle());
}
qDebug("Fast resume and ratio data saved");
}
bool bittorrent::isFilePreviewPossible(QString hash) const{
// See if there are supported files in the torrent
QTorrentHandle h = getTorrentHandle(hash);
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
return false;
}
unsigned int nbFiles = h.num_files();
for(unsigned int i=0; i<nbFiles; ++i) {
QString fileName = h.file_at(i);
QString extension = fileName.split('.').last();
if(misc::isPreviewable(extension))
return true;
}
return false;
}
// Scan the first level of the directory for torrent files
// and add them to download list
void bittorrent::scanDirectory() {
QString file;
if(!scan_dir.isNull()) {
QStringList to_add;
QDir dir(scan_dir);
QStringList filters;
filters << "*.torrent";
QStringList files = dir.entryList(filters, QDir::Files, QDir::Unsorted);
foreach(file, files) {
QString fullPath = dir.path()+QDir::separator()+file;
QFile::rename(fullPath, fullPath+QString::fromUtf8(".old"));
to_add << fullPath+QString::fromUtf8(".old");
}
emit scanDirFoundTorrents(to_add);
}
}
void bittorrent::setDefaultSavePath(QString savepath) {
defaultSavePath = savepath;
}
// Enable directory scanning
void bittorrent::enableDirectoryScanning(QString _scan_dir) {
if(!_scan_dir.isEmpty()) {
scan_dir = _scan_dir;
timerScan = new QTimer(this);
connect(timerScan, SIGNAL(timeout()), this, SLOT(scanDirectory()));
timerScan->start(5000);
}
}
// Disable directory scanning
void bittorrent::disableDirectoryScanning() {
if(!scan_dir.isNull()) {
scan_dir = QString::null;
if(timerScan->isActive()) {
timerScan->stop();
}
}
if(timerScan != 0)
delete timerScan;
}
// Set the ports range in which is chosen the port the bittorrent
// session will listen to
void bittorrent::setListeningPortsRange(std::pair<unsigned short, unsigned short> ports) {
s->listen_on(ports);
}
// Set download rate limit
// -1 to disable
void bittorrent::setDownloadRateLimit(long rate) {
qDebug("Setting a global download rate limit at %ld", rate);
s->set_download_rate_limit(rate);
}
session* bittorrent::getSession() const{
return s;
}
// Set upload rate limit
// -1 to disable
void bittorrent::setUploadRateLimit(long rate) {
qDebug("set upload_limit to %fkb/s", rate/1024.);
s->set_upload_rate_limit(rate);
}
// libtorrent allow to adjust ratio for each torrent
// This function will apply to same ratio to all torrents
void bittorrent::setGlobalRatio(float ratio) {
if(ratio != -1 && ratio < 1.) ratio = 1.;
if(ratio == -1) {
// 0 means unlimited for libtorrent
ratio = 0;
}
std::vector<torrent_handle> handles = s->get_torrents();
unsigned int nbHandles = handles.size();
for(unsigned int i=0; i<nbHandles; ++i) {
QTorrentHandle h = handles[i];
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
continue;
}
h.set_ratio(ratio);
}
}
// Torrents will a ratio superior to the given value will
// be automatically deleted
void bittorrent::setDeleteRatio(float ratio) {
if(ratio != -1 && ratio < 1.) ratio = 1.;
max_ratio = ratio;
qDebug("* Set deleteRatio to %.1f", max_ratio);
deleteBigRatios();
}
bool bittorrent::loadTrackerFile(QString hash) {
QDir torrentBackup(misc::qBittorrentPath() + "BT_backup");
QFile tracker_file(torrentBackup.path()+QDir::separator()+ hash + ".trackers");
if(!tracker_file.exists()) return false;
tracker_file.open(QIODevice::ReadOnly | QIODevice::Text);
QStringList lines = QString::fromUtf8(tracker_file.readAll().data()).split("\n");
std::vector<announce_entry> trackers;
QString line;
foreach(line, lines) {
QStringList parts = line.split("|");
if(parts.size() != 2) continue;
announce_entry t(parts[0].toStdString());
t.tier = parts[1].toInt();
trackers.push_back(t);
}
if(trackers.size() != 0) {
QTorrentHandle h = getTorrentHandle(hash);
h.replace_trackers(trackers);
return true;
}else{
return false;
}
}
void bittorrent::saveTrackerFile(QString hash) {
QDir torrentBackup(misc::qBittorrentPath() + "BT_backup");
QFile tracker_file(torrentBackup.path()+QDir::separator()+ hash + ".trackers");
if(tracker_file.exists()) {
tracker_file.remove();
}
tracker_file.open(QIODevice::WriteOnly | QIODevice::Text);
QTorrentHandle h = getTorrentHandle(hash);
std::vector<announce_entry> trackers = h.trackers();
for(unsigned int i=0; i<trackers.size(); ++i) {
tracker_file.write(QByteArray(trackers[i].url.c_str())+QByteArray("|")+QByteArray(misc::toString(i).c_str())+QByteArray("\n"));
}
tracker_file.close();
}
// Add uT PeX extension to bittorrent session
void bittorrent::enablePeerExchange() {
qDebug("Enabling Peer eXchange");
s->add_extension(&create_ut_pex_plugin);
}
// Set DHT port (>= 1000)
void bittorrent::setDHTPort(int dht_port) {
if(dht_port >= 1000) {
struct dht_settings DHTSettings;
DHTSettings.service_port = dht_port;
s->set_dht_settings(DHTSettings);
qDebug("Set DHT Port to %d", dht_port);
}
}
// Enable IP Filtering
void bittorrent::enableIPFilter(ip_filter filter) {
qDebug("Enabling IPFiler");
s->set_ip_filter(filter);
}
// Disable IP Filtering
void bittorrent::disableIPFilter() {
qDebug("Disabling IPFilter");
s->set_ip_filter(ip_filter());
}
// Set BT session settings (user_agent)
void bittorrent::setSessionSettings(session_settings sessionSettings) {
qDebug("Set session settings");
s->set_settings(sessionSettings);
}
// Set Proxy
void bittorrent::setProxySettings(proxy_settings proxySettings, bool trackers, bool peers, bool web_seeds, bool dht) {
qDebug("Set Proxy settings");
if(trackers)
s->set_tracker_proxy(proxySettings);
if(peers)
s->set_peer_proxy(proxySettings);
if(web_seeds)
s->set_web_seed_proxy(proxySettings);
if(DHTEnabled && dht) {
s->set_dht_proxy(proxySettings);
}
}
// Read alerts sent by the bittorrent session
void bittorrent::readAlerts() {
// look at session alerts and display some infos
std::auto_ptr<alert> a = s->pop_alert();
while (a.get()) {
if (torrent_finished_alert* p = dynamic_cast<torrent_finished_alert*>(a.get())) {
QTorrentHandle h(p->handle);
if(h.is_valid()){
QString hash = h.hash();
qDebug("Received finished alert for %s", h.name().toUtf8().data());
setFinishedTorrent(hash);
emit finishedTorrent(h);
}
}
else if (file_error_alert* p = dynamic_cast<file_error_alert*>(a.get())) {
QTorrentHandle h(p->handle);
qDebug("File Error: %s", p->msg().c_str());
if(h.is_valid())
emit fullDiskError(h);
}
else if (dynamic_cast<listen_failed_alert*>(a.get())) {
// Level: fatal
emit portListeningFailure();
}
else if (tracker_alert* p = dynamic_cast<tracker_alert*>(a.get())) {
// Level: fatal
QTorrentHandle h(p->handle);
if(h.is_valid()){
QString hash = h.hash();
QList<QPair<QString, QString> > errors = trackersErrors.value(hash, QList<QPair<QString, QString> >());
if(errors.size() > MAX_TRACKER_ERRORS)
errors.removeAt(0);
errors << QPair<QString,QString>(QTime::currentTime().toString("hh:mm:ss"), QString::fromUtf8(a->msg().c_str()));
trackersErrors[hash] = errors;
// Authentication
if(p->status_code == 401) {
emit trackerAuthenticationRequired(h);
}
}
}
else if (torrent_paused_alert* p = dynamic_cast<torrent_paused_alert*>(a.get())) {
QTorrentHandle h(p->handle);
if(h.is_valid()){
QString hash = h.hash();
qDebug("Received torrent_paused_alert for %s", hash.toUtf8().data());
int index = waitingForPause.indexOf(hash);
if(index != -1){
waitingForPause.removeAt(index);
}
if(reloadingTorrents.contains(hash)) {
reloadTorrent(h, reloadingTorrents.value(hash));
reloadingTorrents.remove(hash);
}
}
}
else if (peer_blocked_alert* p = dynamic_cast<peer_blocked_alert*>(a.get())) {
emit peerBlocked(QString::fromUtf8(p->ip.to_string().c_str()));
}
else if (fastresume_rejected_alert* p = dynamic_cast<fastresume_rejected_alert*>(a.get())) {
QTorrentHandle h(p->handle);
if(h.is_valid()){
qDebug("/!\\ Fast resume failed for %s, reason: %s", h.name().toUtf8().data(), p->msg().c_str());
emit fastResumeDataRejected(h.name());
}
}
else if (url_seed_alert* p = dynamic_cast<url_seed_alert*>(a.get())) {
emit urlSeedProblem(QString::fromUtf8(p->url.c_str()), QString::fromUtf8(p->msg().c_str()));
}
else if (torrent_checked_alert* p = dynamic_cast<torrent_checked_alert*>(a.get())) {
QTorrentHandle h(p->handle);
if(h.is_valid()){
QString hash = h.hash();
qDebug("%s have just finished checking", hash.toUtf8().data());
int index = torrentsToPauseAfterChecking.indexOf(hash);
if(index != -1) {
torrentsToPauseAfterChecking.removeAt(index);
// Pause torrent
pauseTorrent(hash);
qDebug("%s was paused after checking", hash.toUtf8().data());
}
emit torrentFinishedChecking(hash);
}
}
a = s->pop_alert();
}
}
QList<QPair<QString, QString> > bittorrent::getTrackersErrors(QString hash) const{
return trackersErrors.value(hash, QList<QPair<QString, QString> >());
}
QStringList bittorrent::getTorrentsToPauseAfterChecking() const{
return torrentsToPauseAfterChecking;
}
// Function to reload the torrent async after the torrent is actually
// paused so that we can get fastresume data
void bittorrent::pauseAndReloadTorrent(QTorrentHandle h, bool full_alloc) {
if(!h.is_valid()) {
std::cerr << "/!\\ Error: Invalid handle\n";
return;
}
// ask to pause the torrent (async)
h.pause();
QString hash = h.hash();
// Add it to reloadingTorrents has table so that we now we
// we should reload the torrent once we receive the
// torrent_paused_alert. pause() is async now...
reloadingTorrents[hash] = full_alloc;
}
// Reload a torrent with full allocation mode
void bittorrent::reloadTorrent(const QTorrentHandle &h, bool full_alloc) {
qDebug("** Reloading a torrent");
if(!h.is_valid()) {
qDebug("/!\\ Error: Invalid handle");
return;
}
QDir torrentBackup(misc::qBittorrentPath() + "BT_backup");
fs::path saveDir = h.save_path_boost();
QString fileName = h.name();
QString hash = h.hash();
boost::intrusive_ptr<torrent_info> t(new torrent_info(h.get_torrent_info()));
qDebug("Reloading torrent: %s", fileName.toUtf8().data());
entry resumeData;
// Checking if torrentBackup Dir exists
// create it if it is not
if(! torrentBackup.exists()) {
torrentBackup.mkpath(torrentBackup.path());
}
// Extracting resume data
if (h.has_metadata()) {
// get fast resume data
resumeData = h.write_resume_data();
}
// Remove torrent
s->remove_torrent(h.get_torrent_handle());
// Add torrent again to session
unsigned int timeout = 0;
while(h.is_valid() && timeout < 6) {
SleeperThread::msleep(1000);
++timeout;
}
QTorrentHandle new_h;
if(full_alloc)
new_h = s->add_torrent(t, saveDir, resumeData, storage_mode_allocate);
else
new_h = s->add_torrent(t, saveDir, resumeData, storage_mode_sparse);
qDebug("Using full allocation mode");
// Connections limit per torrent
new_h.set_max_connections(maxConnecsPerTorrent);
// Uploads limit per torrent
new_h.set_max_uploads(maxUploadsPerTorrent);
// Load filtered Files
loadFilesPriorities(new_h);
// Load speed limit from hard drive
loadTorrentSpeedLimits(hash);
// Load custom url seeds
loadWebSeeds(hash);
// Load ratio data
loadDownloadUploadForTorrent(hash);
// Pause torrent if it was paused last time
if(QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".paused")) {
new_h.pause();
}
// Incremental download
if(QFile::exists(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".incremental")) {
qDebug("Incremental download enabled for %s", fileName.toUtf8().data());
new_h.set_sequenced_download_threshold(1);
}
}
int bittorrent::getListenPort() const{
return s->listen_port();
}
session_status bittorrent::getSessionStatus() const{
return s->status();
}
QString bittorrent::getSavePath(QString hash) {
QFile savepath_file(misc::qBittorrentPath()+"BT_backup"+QDir::separator()+hash+".savepath");
QByteArray line;
QString savePath;
if(savepath_file.open(QIODevice::ReadOnly | QIODevice::Text)) {
line = savepath_file.readAll();
savepath_file.close();
qDebug(" -> Save path: %s", line.data());
savePath = QString::fromUtf8(line.data());
}else{
// use default save path
savePath = defaultSavePath;
}
// Checking if savePath Dir exists
// create it if it is not
QDir saveDir(savePath);
if(!saveDir.exists()) {
if(!saveDir.mkpath(saveDir.path())) {
std::cerr << "Couldn't create the save directory: " << saveDir.path().toUtf8().data() << "\n";
// XXX: handle this better
return QDir::homePath();
}
}
return savePath;
}
// Take an url string to a torrent file,
// download the torrent file to a tmp location, then
// add it to download list
void bittorrent::downloadFromUrl(QString url) {
emit aboutToDownloadFromUrl(url);
// Launch downloader thread
downloader->downloadUrl(url);
}
// Add to bittorrent session the downloaded torrent file
void bittorrent::processDownloadedFile(QString url, QString file_path) {
// Add file to torrent download list
emit newDownloadedTorrent(file_path, url);
}
void bittorrent::downloadFromURLList(const QStringList& url_list) {
QString url;
qDebug("DownloadFromUrlList");
foreach(url, url_list) {
downloadFromUrl(url);
}
}
// Return current download rate for the BT
// session. Payload means that it only take into
// account "useful" part of the rate
float bittorrent::getPayloadDownloadRate() const{
session_status sessionStatus = s->status();
return sessionStatus.payload_download_rate;
}
// Return current upload rate for the BT
// session. Payload means that it only take into
// account "useful" part of the rate
float bittorrent::getPayloadUploadRate() const{
session_status sessionStatus = s->status();
return sessionStatus.payload_upload_rate;
}
// Save DHT entry to hard drive
void bittorrent::saveDHTEntry() {
// Save DHT entry
if(DHTEnabled) {
try{
entry dht_state = s->dht_state();
boost::filesystem::ofstream out((misc::qBittorrentPath()+QString::fromUtf8("dht_state")).toUtf8().data(), std::ios_base::binary);
out.unsetf(std::ios_base::skipws);
bencode(std::ostream_iterator<char>(out), dht_state);
qDebug("DHT entry saved");
}catch (std::exception& e) {
std::cerr << e.what() << "\n";
}
}
}
void bittorrent::applyEncryptionSettings(pe_settings se) {
qDebug("Applying encryption settings");
s->set_pe_settings(se);
}
// Will fast resume torrents in
// backup directory
void bittorrent::resumeUnfinishedTorrents() {
qDebug("Resuming unfinished torrents");
QDir torrentBackup(misc::qBittorrentPath() + "BT_backup");
QStringList fileNames, filePaths;
// Scan torrentBackup directory
QStringList filters;
filters << "*.torrent";
fileNames = torrentBackup.entryList(filters, QDir::Files, QDir::Unsorted);
QString fileName;
foreach(fileName, fileNames) {
filePaths.append(torrentBackup.path()+QDir::separator()+fileName);
}
// Resume downloads
foreach(fileName, filePaths) {
addTorrent(fileName, false, QString(), true);
}
qDebug("Unfinished torrents resumed");
}