Fix download from URLs on Windows

Fix possible encoding problems in paths (Windows)

src/downloadthread.cpp

@@ -77,22 +77,28 @@ void DownloadThread::processDlFinished(QNetworkReply* reply) {
     url = m_redirectMapping.take(url);
   }
   // Success
-  QTemporaryFile tmpfile;
-  tmpfile.setAutoRemove(false);
-  if (tmpfile.open()) {
-    QString filePath = tmpfile.fileName();
+  QTemporaryFile *tmpfile = new QTemporaryFile;
+  tmpfile->setAutoRemove(false);
+  if (tmpfile->open()) {
+    QString filePath = tmpfile->fileName();
     qDebug("Temporary filename is: %s", qPrintable(filePath));
     if(reply->isOpen() || reply->open(QIODevice::ReadOnly)) {
       // TODO: Support GZIP compression
-      tmpfile.write(reply->readAll());
-      tmpfile.close();
+      tmpfile->write(reply->readAll());
+      tmpfile->close();
+      // XXX: For some reason, tmpfile has to be destroyed before
+      // the signal is sent or the file stays locked on Windows
+      // for some reason.
+      delete tmpfile;
       // Send finished signal
       emit downloadFinished(url, filePath);
     } else {
+      delete tmpfile;
       // Error when reading the request
       emit downloadFailure(url, tr("I/O Error"));
     }
   } else {
+    delete tmpfile;
     emit downloadFailure(url, tr("I/O Error"));
   }
   // Clean up
@@ -134,7 +140,7 @@ QNetworkReply* DownloadThread::downloadUrl(const QString &url){
 #endif
   // Process download request
   qDebug("url is %s", qPrintable(url));
-  const QUrl qurl = QUrl::fromEncoded(url.toLocal8Bit());
+  const QUrl qurl = QUrl::fromEncoded(url.toUtf8());
   QNetworkRequest request(qurl);
   // Spoof Firefox 3.5 user agent to avoid
   // Web server banning

src/qtlibtorrent/qbtsession.cpp

@@ -238,7 +238,7 @@ void QBtSession::setUploadLimit(QString hash, long val) {
 void QBtSession::handleDownloadFailure(QString url, QString reason) {
   emit downloadFromUrlFailure(url, reason);
   // Clean up
-  const QUrl qurl = QUrl::fromEncoded(url.toLocal8Bit());
+  const QUrl qurl = QUrl::fromEncoded(url.toUtf8());
   url_skippingDlg.removeOne(qurl);
   savepathLabel_fromurl.remove(qurl);
 }
@@ -976,9 +976,9 @@ QTorrentHandle QBtSession::addTorrent(QString path, bool fromScanDir, QString fr
   }
 
   QString savePath;
-  if(!from_url.isEmpty() && savepathLabel_fromurl.contains(QUrl::fromEncoded(from_url.toLocal8Bit()))) {
+  if(!from_url.isEmpty() && savepathLabel_fromurl.contains(QUrl::fromEncoded(from_url.toUtf8()))) {
     // Enforcing the save path defined before URL download (from RSS for example)
-    QPair<QString, QString> savePath_label = savepathLabel_fromurl.take(QUrl::fromEncoded(from_url.toLocal8Bit()));
+    QPair<QString, QString> savePath_label = savepathLabel_fromurl.take(QUrl::fromEncoded(from_url.toUtf8()));
     if(savePath_label.first.isEmpty())
       savePath = getSavePath(hash, fromScanDir, path, root_folder);
     else
@@ -1520,7 +1520,7 @@ void QBtSession::saveFastResumeData() {
       const QString file = torrentBackup.absoluteFilePath(h.hash()+".fastresume");
       if(QFile::exists(file))
         misc::safeRemove(file);
-      boost::filesystem::ofstream out(boost::filesystem::path(file.toLocal8Bit().constData()), std::ios_base::binary);
+      boost::filesystem::ofstream out(boost::filesystem::path(file.toUtf8().constData()), std::ios_base::binary);
       out.unsetf(std::ios_base::skipws);
       bencode(std::ostream_iterator<char>(out), *rd->resume_data);
       // Remove torrent from session
@@ -2075,7 +2075,7 @@ void QBtSession::readAlerts() {
           misc::safeRemove(file);
         qDebug("Saving fastresume data in %s", qPrintable(file));
         if (p->resume_data) {
-          boost::filesystem::ofstream out(boost::filesystem::path(file.toLocal8Bit().constData()), std::ios_base::binary);
+          boost::filesystem::ofstream out(boost::filesystem::path(file.toUtf8().constData()), std::ios_base::binary);
           out.unsetf(std::ios_base::skipws);
           bencode(std::ostream_iterator<char>(out), *p->resume_data);
         }
@@ -2479,7 +2479,7 @@ void QBtSession::addMagnetSkipAddDlg(QString uri) {
 
 void QBtSession::downloadUrlAndSkipDialog(QString url, QString save_path, QString label) {
   //emit aboutToDownloadFromUrl(url);
-  const QUrl qurl = QUrl::fromEncoded(url.toLocal8Bit());
+  const QUrl qurl = QUrl::fromEncoded(url.toUtf8());
   savepathLabel_fromurl[qurl] = qMakePair(save_path, label);
   url_skippingDlg << qurl;
   // Launch downloader thread
@@ -2488,14 +2488,14 @@ void QBtSession::downloadUrlAndSkipDialog(QString url, QString save_path, QStrin
 
 // Add to Bittorrent session the downloaded torrent file
 void QBtSession::processDownloadedFile(QString url, QString file_path) {
-  const int index = url_skippingDlg.indexOf(QUrl::fromEncoded(url.toLocal8Bit()));
+  const int index = url_skippingDlg.indexOf(QUrl::fromEncoded(url.toUtf8()));
   if(index < 0) {
     // Add file to torrent download list
 #ifdef Q_WS_WIN
     // Windows hack
-    if(!file_path.endsWith(".torrent")) {
+    if(!file_path.endsWith(".torrent", Qt::CaseInsensitive)) {
       Q_ASSERT(QFile::exists(file_path));
-      qDebug("Torrent name does not end with .torrent, fixing...");
+      qDebug("Torrent name does not end with .torrent, from %s", qPrintable(file_path));
       if(QFile::rename(file_path, file_path+".torrent")) {
         file_path += ".torrent";
       } else {
@@ -2535,7 +2535,7 @@ void QBtSession::saveDHTEntry() {
       const QString dht_path = misc::cacheLocation()+QDir::separator()+QString::fromUtf8("dht_state");
       if(QFile::exists(dht_path))
         misc::safeRemove(dht_path);
-      boost::filesystem::ofstream out(dht_path.toLocal8Bit().constData(), std::ios_base::binary);
+      boost::filesystem::ofstream out(dht_path.toUtf8().constData(), std::ios_base::binary);
       out.unsetf(std::ios_base::skipws);
       bencode(std::ostream_iterator<char>(out), dht_state);
       qDebug("DHT entry saved");

src/torrentadditiondlg.cpp

@@ -216,6 +216,8 @@ void torrentAdditionDialog::showLoad(QString filePath, QString from_url) {
     return;
   }
 
+  qDebug() << Q_FUNC_INFO << filePath;
+
   this->filePath = filePath;
   this->from_url = from_url;
   // Getting torrent file informations