File indexing completed on 2024-11-10 04:31:14

 /*
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2020 Stefano Crocco <stefano.crocco@alice.it>
 
     SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 #include "urlloader.h"
 #include "konqsettings.h"
 #include "konqmainwindow.h"
 #include "konqview.h"
 #include "konqurl.h"
 #include "konqdebug.h"
 
 #include "libkonq_utils.h"
 
 #include "interfaces/downloaderextension.h"
 
 #include <KIO/OpenUrlJob>
 #include <KIO/JobUiDelegate>
 #include <KIO/FileCopyJob>
 #include <KIO/MimeTypeFinderJob>
 #include <KIO/JobUiDelegateFactory>
 #include <KIO/CopyJob>
 #include <KIO/JobTracker>
 #include <KMessageBox>
 #include <KParts/ReadOnlyPart>
 #include "kf5compat.h" //For NavigationExtension
 #include <KParts/PartLoader>
 #include <KJobWidgets>
 #include <KProtocolManager>
 #include <KDesktopFile>
 #include <KApplicationTrader>
 #include <KParts/PartLoader>
 #include <KLocalizedString>
 #include <KIO/JobUiDelegateFactory>
 #include <KJobTrackerInterface>
 
 #include <QDebug>
 #include <QArgument>
 #include <QWebEngineProfile>
 #include <QMimeDatabase>
 #include <QWebEngineProfile>
 #include <QFileDialog>
 #include <QFileInfo>
 #include <QLoggingCategory>
 
 using namespace KonqInterfaces;
 
 bool UrlLoader::embedWithoutAskingToSave(const QString &mimeType)
 {
     static QStringList s_mimeTypes;
     if (s_mimeTypes.isEmpty()) {
         QStringList names{QStringLiteral("kfmclient_html"), QStringLiteral("kfmclient_dir"), QStringLiteral("kfmclient_war")};
         for (const QString &name : names) {
             KService::Ptr s = KService::serviceByStorageId(name);
             if (s) {
                 s_mimeTypes.append(s->mimeTypes());
             } else {
                 qCDebug(KONQUEROR_LOG()) << "Couldn't find service" << name;
             }
         }
         //The user may want to save xml files rather than embedding them
         //TODO: is there a better way to do this?
         s_mimeTypes.removeOne(QStringLiteral("application/xml"));
     }
     return s_mimeTypes.contains(mimeType);
 }
 
 UrlLoader::UrlLoader(KonqMainWindow *mainWindow, KonqView *view, const QUrl &url, const QString &mimeType, const KonqOpenURLRequest &req, bool trustedSource, bool dontEmbed):
     QObject(mainWindow),
     m_mainWindow(mainWindow),
     m_url(url),
     m_mimeType(mimeType),
     m_request(req),
     m_view(view),
     m_trustedSource(trustedSource),
     m_dontEmbed(dontEmbed),
     m_protocolAllowsReading(KProtocolManager::supportsReading(m_url) || !KProtocolInfo::isKnownProtocol(m_url)), // If the protocol is unknown, assume it allows reading
     m_letRequestingPartDownloadUrl(req.letPartPerformDownload)
 {
     //TODO KF6: currently there's no way to pass the suggested file name. When dropping compatibility with KF5, have a field for this
     //in BrowserArguments
     m_request.suggestedFileName = m_request.args.metaData().value(QStringLiteral("SuggestedFileName"));
 
     //TODO KF6 after implementing a better way to allow the user to display a file after saving it locally
     //(see comment for WebEnginePage::saveUrlToDiskAndDisplay in webenginepage.cpp), remove all references
     //to embedOrNothing
     m_embedOrNothing = m_request.args.metaData().contains(QStringLiteral("EmbedOrNothing"));
 
     getDownloaderJobFromPart();
     if (m_letRequestingPartDownloadUrl) {
         m_originalUrl = m_url;
     }
     determineStartingMimetype();
     m_dontPassToWebEnginePart = m_request.args.metaData().contains("DontSendToDefaultHTMLPart");
 
     //Obviously this shoud never happen
     if (m_dontEmbed && m_embedOrNothing) {
         qCDebug(KONQUEROR_LOG()) << "Conflicting requests for loading" << m_url << ": to never embed and to only embed. Nothing will be done";
         m_action = OpenUrlAction::DoNothing;
     }
 }
 
 UrlLoader::~UrlLoader()
 {
 }
 
 void UrlLoader::determineStartingMimetype()
 {
     QMimeDatabase db;
     if (!m_mimeType.isEmpty()) {
         if (m_letRequestingPartDownloadUrl || !db.mimeTypeForName(m_mimeType).isDefault()) {
             return;
         }
     }
 
     m_mimeType = m_request.args.mimeType();
     //In theory, this should never happen, as parts requesting to download the URL
     //by themselves should already have set the mimetype. However, let's check, just in case
     if (m_letRequestingPartDownloadUrl && m_mimeType.isEmpty()) {
         m_mimeType = QStringLiteral("application/octet-stream");
     } else if (db.mimeTypeForName(m_mimeType).isDefault()) {
         m_mimeType.clear();
     }
 }
 
 QString UrlLoader::mimeType() const
 {
     return m_mimeType;
 }
 
 bool UrlLoader::isMimeTypeKnown(const QString &mimeType)
 {
     return !mimeType.isEmpty();
 }
 
 void UrlLoader::setView(KonqView* view)
 {
     m_view = view;
 }
 
 void UrlLoader::setOldLocationBarUrl(const QString& old)
 {
     m_oldLocationBarUrl = old;
 }
 
 void UrlLoader::setNewTab(bool newTab)
 {
     m_request.browserArgs.setNewTab(newTab);
 }
 
 void UrlLoader::start()
 {
     if (m_url.isLocalFile()) {
         detectSettingsForLocalFiles();
     } else {
         detectSettingsForRemoteFiles();
     }
 
     if (hasError()) {
         m_mimeType = QStringLiteral("text/html");
     }
     if (isMimeTypeKnown(m_mimeType)) {
         KService::Ptr preferredService = KApplicationTrader::preferredService(m_mimeType);
         if (serviceIsKonqueror(preferredService)) {
             m_request.forceAutoEmbed = true;
         }
     }
 
     m_isAsync = m_protocolAllowsReading && (!isMimeTypeKnown(m_mimeType) || m_letRequestingPartDownloadUrl);
 }
 
 bool UrlLoader::isViewLocked() const
 {
     return m_view && m_view->isLockedLocation();
 }
 
 void UrlLoader::decideAction()
 {
     if (hasError()) {
         m_action = OpenUrlAction::Embed;
         return;
     }
     if (!m_embedOrNothing) {
         m_action = decideExecute();
     }
     switch (m_action) {
         case OpenUrlAction::Execute:
             m_ready = true;
             break;
         case OpenUrlAction::DoNothing:
             m_ready = true;
             return;
         default:
             if (!isMimeTypeKnown(m_mimeType) && !m_protocolAllowsReading && !m_embedOrNothing) {
                 //If the protocol doesn't allow reading and we don't have a mimetype associated with it,
                 //use the Open action, as we most likely won't be able to find out the mimetype. This is
                 //what happens, for example, for mailto URLs
                 m_action = OpenUrlAction::Open;
                 return;
             } else if (isViewLocked() || shouldEmbedThis() || m_embedOrNothing) {
                 bool success = decideEmbedOrSave();
                 if (success || m_embedOrNothing) {
                     if (m_embedOrNothing && m_action != OpenUrlAction::Embed) {
                         m_action = OpenUrlAction::DoNothing;
                     }
                     return;
                 }
             }
             decideOpenOrSave();
     }
 }
 
 void UrlLoader::abort()
 {
     if (m_openUrlJob) {
         m_openUrlJob->kill();
     }
     if (m_applicationLauncherJob) {
         m_applicationLauncherJob->kill();
     }
     deleteLater();
 }
 
 
 void UrlLoader::goOn()
 {
     if (m_isAsync && !isMimeTypeKnown(m_mimeType)) {
         launchMimeTypeFinderJob();
     } else {
         decideAction();
         m_ready = !m_letRequestingPartDownloadUrl;
         performAction();
     }
 }
 
 KPluginMetaData UrlLoader::findEmbeddingPart(bool forceServiceName) const
 {
     const QLatin1String webEngineName("webenginepart");
 
     //Use WebEnginePart for konq: URLs even if it's not the default html engine
     if (KonqUrl::hasKonqScheme(m_url)) {
         return findPartById(webEngineName);
     }
 
     KPluginMetaData part;
 
     //Check whether the view can display the mimetype, but only if the URL hasn't been explicitly
     //typed by the user: in this case, use the preferred service. This is needed to avoid the situation
     //where m_view is a Kate part, the user enters the URL of a web page and the page is opened within
     //the Kate part because it can handle html files.
     if (m_view && m_request.typedUrl.isEmpty() && m_view->supportsMimeType(m_mimeType)) {
         part = m_view->service();
     } else if (!m_request.serviceName.isEmpty()) {
         // If the service name has been set by the "--part" command line argument
         // (detected in handleCommandLine() in konqmain.cpp), then use it as is.
         part = findPartById(m_request.serviceName);
         if (!forceServiceName && !part.supportsMimeType(m_mimeType)) {
             part = KPluginMetaData();
         }
     }
 
     if (!part.isValid()) {
         part = preferredPart(m_mimeType);
     }
 
     /* Corner case: webenginepart can't determine mimetype (gives application/octet-stream) but
      * OpenUrlJob determines a mimetype supported by WebEnginePart (for example application/xml):
      * if the preferred part is webenginepart, we'd get an endless loop because webenginepart will
      * call again this. To avoid this, if the preferred service is webenginepart and m_dontPassToWebEnginePart
      * is true, use the second preferred service (if any); otherwise return false. This will offer the user
      * the option to open or save, instead.
      *
      * This can also happen if the URL was opened from a link with the "download" attribute or with a
      * "CONTENT-DISPOSITION: attachment" header. In these cases, WebEnginePart will always refuse to open
      * the URL and will ask Konqueror to download it. However, if the preferred part for the URL mimetype is
      * WebEnginePart itself, this would lead to an endless loop. This check avoids it
      */
     if (m_dontPassToWebEnginePart && m_part.pluginId() == webEngineName) {
         QVector<KPluginMetaData> parts = KParts::PartLoader::partsForMimeType(m_mimeType);
         auto findPart = [&webEngineName](const KPluginMetaData &md){return md.pluginId() != webEngineName;};
         QVector<KPluginMetaData>::const_iterator partToUse = std::find_if(parts.constBegin(), parts.constEnd(), findPart);
         if (partToUse != parts.constEnd()) {
             part = *partToUse;
         } else {
             part = KPluginMetaData();
         }
     }
     return part;
 }
 
 bool UrlLoader::decideEmbedOrSave()
 {
     m_part = findEmbeddingPart();
 
     //If we can't find a part, return false, so that the caller can use decideOpenOrSave to allow the
     //user the possibility of opening the file, since embedding wasn't possibile
     if (!m_part.isValid()) {
         return false;
     }
 
     //Ask whether to save or embed, except in the following cases:
     //- it's a web page: always embed
     //- it's a local file: always embed
     if (embedWithoutAskingToSave(m_mimeType) || m_url.isLocalFile() || m_embedOrNothing) {
         m_action = OpenUrlAction::Embed;
     } else {
         m_action = askSaveOrOpen(OpenEmbedMode::Embed).first;
     }
 
     if (m_action == OpenUrlAction::Embed) {
         m_request.serviceName = m_part.pluginId();
     }
 
     m_ready = m_part.isValid() || m_action != OpenUrlAction::Embed;
     return true;
 }
 
 void UrlLoader::decideOpenOrSave()
 {
     m_ready = true;
     QString protClass = KProtocolInfo::protocolClass(m_url.scheme());
     bool isLocal = m_url.isLocalFile();
     bool alwaysOpen = isLocal || protClass == QLatin1String(":local") || KProtocolInfo::isHelperProtocol(m_url);
     OpenSaveAnswer answerWithService;
     if (!alwaysOpen) {
         answerWithService = askSaveOrOpen(OpenEmbedMode::Open);
     } else {
         answerWithService = qMakePair(OpenUrlAction::Open, KApplicationTrader::preferredService(m_mimeType));
     }
 
     m_action = answerWithService.first;
 
     //If the URL should be opened in an external application and it should be downloaded by the requesting part,
     //ensure it's not downloaded in Konqueror's temporary directory but in the global temporary directory,
     //otherwise if the user closes Konqueror before closing the application, there could be issues because the
     //external application wouldn't find the file anymore.
     //Problem: if the application doesn't support the --tempfile switch, the file will remain even after both Konqueror
     //and the external application are closed and will only be removed automatically if the temporary directory is deleted
     //or emptied.
     if (m_letRequestingPartDownloadUrl && m_action == OpenUrlAction::Open && m_partDownloaderJob) {
         QString fileName = QFileInfo(m_partDownloaderJob->downloadPath()).fileName();
         m_partDownloaderJob->setDownloadPath(QDir::temp().filePath(fileName));
     }
     m_service = answerWithService.second;
 }
 
 
 bool UrlLoader::isUrlExecutable() const
 {
     if (!m_url.isLocalFile()) {
         return false;
     }
 
 //Code copied from kio/krun.cpp (KF5.109) written by:
 //- Torben Weis <weis@kde.org>
 //- David Faure <faure@kde.org>
 //- Michael Pyne <michael.pyne@kdemail.net>
 //- Harald Sitter <sitter@kde.org>
     QMimeDatabase db;
     QMimeType mimeType = db.mimeTypeForName(m_mimeType);
     if (!(mimeType.inherits(QStringLiteral("application/x-desktop")) ||
         mimeType.inherits(QStringLiteral("application/x-executable")) ||
         /* See https://bugs.freedesktop.org/show_bug.cgi?id=97226 */
         mimeType.inherits(QStringLiteral("application/x-sharedlib")) ||
         mimeType.inherits(QStringLiteral("application/x-ms-dos-executable")) ||
         mimeType.inherits(QStringLiteral("application/x-shellscript")))) {
         return false;
     }
 
     return QFileInfo(m_url.path()).isExecutable();
 }
 
 
 UrlLoader::OpenUrlAction UrlLoader::decideExecute() const {
     //We don't want to execute files which aren't local, files which aren't executable (obviously)
     //and we don't want to execute when we are reloading (the file is visible in the current part,
     //so we know the user wanted to display it
     if (!isUrlExecutable() || m_request.args.reload()) {
         return OpenUrlAction::UnknwonAction;
     }
     bool canDisplay = !KParts::PartLoader::partsForMimeType(m_mimeType).isEmpty();
 
     KMessageBox::ButtonCode code;
     KGuiItem executeGuiItem(i18nc("Execute an executable file", "Execute"),
                             QIcon::fromTheme(QStringLiteral("system-run")));
     KGuiItem displayGuiItem(i18nc("Display an executable file", "Display"),
                             QIcon::fromTheme(QStringLiteral("document-preview")));
     QString dontShowAgainId(QLatin1String("AskExecuting")+m_mimeType);
 
     if (canDisplay) {
         code = KMessageBox::questionTwoActionsCancel(m_mainWindow,
                                                      xi18nc("@info The user has to decide whether to execute an executable file or display it",
                                                             "<filename>%1</filename> can be executed. Do you want to execute it or to display it?", m_url.path()),
                                                      QString(), executeGuiItem, displayGuiItem,
                                                      KStandardGuiItem::cancel(), dontShowAgainId, KMessageBox::Dangerous);
     } else {
         code = KMessageBox::questionTwoActions(m_mainWindow,
                                                xi18nc("@info The user has to decide whether to execute an executable file or not",
                                                       "<filename>%1</filename> can be executed. Do you want to execute it?", m_url.path()),
                                                QString(), executeGuiItem, KStandardGuiItem::cancel(),
                                                dontShowAgainId, KMessageBox::Dangerous);}
     switch (code) {
         case KMessageBox::PrimaryAction:
             return OpenUrlAction::Execute;
         case KMessageBox::Cancel:
             return OpenUrlAction::DoNothing;
         case KMessageBox::SecondaryAction:
             //The "No" button actually corresponds to the "Cancel" action if the file can't be displayed
             return canDisplay ? OpenUrlAction::UnknwonAction : OpenUrlAction::DoNothing;
         default: //This is here only to avoid a compiler warning
             return OpenUrlAction::UnknwonAction;
     }
 }
 
 void UrlLoader::performAction()
 {
     //If we still aren't ready, it means that the part wants to download the URL
     //by itself. Do this only when opening or embedding, however, since when
     //saving we first need to ask the user where to save. save() will launch the
     //job itself.
     //When the part has finished downloading the URL, the slot connected with the
     //job's result() signal will call again this function, after setting m_ready
     //to true
     if (!m_ready && (m_action == OpenUrlAction::Embed || m_action == OpenUrlAction::Open)) {
         downloadForEmbeddingOrOpening();
         return;
     }
     switch (m_action) {
         case OpenUrlAction::Embed:
             embed();
             break;
         case OpenUrlAction::Open:
             open();
             break;
         case OpenUrlAction::Execute:
             execute();
             break;
         case OpenUrlAction::Save:
             save();
             break;
         case OpenUrlAction::DoNothing:
         case OpenUrlAction::UnknwonAction: //This should never happen
             done();
             break;
     }
 }
 
 void UrlLoader::getDownloaderJobFromPart()
 {
     if (!m_letRequestingPartDownloadUrl) {
         return;
     }
     DownloaderExtension *iface = downloaderInterface();
     if (iface) {
         m_partDownloaderJob = iface->downloadJob(m_url, m_request.downloadId, this);
     } else {
         qCDebug(KONQUEROR_LOG) << "Wanting to let part download" << m_url << "but part doesn't implement the DownloaderInterface";
     }
 
     //If we can't get a job for whatever reason (it shouldn't happen, but let's be sure)
     //try to open the URL in the usual way. Maybe it'll work (most likely, it will if
     //there's no need to have special cookies set to access it)
     if (!m_partDownloaderJob) {
         qCDebug(KONQUEROR_LOG) << "Couldn't get DownloadJob for" << m_url << "from part" << m_part;
         m_letRequestingPartDownloadUrl = false;
         m_request.tempFile = false; //Opening a remote URL with tempFile will fail
     }
 }
 
 void UrlLoader::downloadForEmbeddingOrOpening()
 {
     //This shouldn't happen
     if (!m_partDownloaderJob) {
         done();
         return;
     }
     connect(m_partDownloaderJob, &DownloaderJob::downloadResult, this, &UrlLoader::jobFinished);
 #if QT_VERSION_MAJOR < 6
     //In KF5, DownloaderJob::startDownload doesn't connect to the signal
     connect(m_partDownloaderJob, &DownloaderJob::downloadResult, this, &UrlLoader::downloadForEmbeddingOrOpeningDone);
 #endif
     m_partDownloaderJob->startDownload(m_mainWindow, this, &UrlLoader::downloadForEmbeddingOrOpeningDone);
 }
 
 void UrlLoader::downloadForEmbeddingOrOpeningDone(KonqInterfaces::DownloaderJob *job, const QUrl &url)
 {
     if (job && job->error() == 0) {
         m_url = url;
         m_ready = true;
         m_request.tempFile = true;
     } else if (!job || job->error() == KIO::ERR_USER_CANCELED) {
         m_action = OpenUrlAction::DoNothing;
         m_ready = true;
     }
     checkDownloadedMimetype();
     performAction();
 }
 
 void UrlLoader::checkDownloadedMimetype()
 {
     QMimeDatabase db;
     QMimeType typeByContent = db.mimeTypeForFile(m_url.path(), QMimeDatabase::MatchContent);
     QMimeType typeByName = db.mimeTypeForFile(m_url.path(), QMimeDatabase::MatchExtension);
     QString type = (typeByName.inherits(typeByContent.name()) ? typeByName : typeByContent).name();
     if (type == m_mimeType) {
         return;
     }
     m_mimeType = type;
     //The URL is a local file now, so there are no problems in opening it with WebEnginePart
     m_dontPassToWebEnginePart = false;
     if (shouldEmbedThis()) {
         m_part = findEmbeddingPart(false);
         if (m_part.isValid()) {
             m_action = OpenUrlAction::Embed;
             return;
         }
     }
     m_action = OpenUrlAction::Open;
     if (m_service && m_service->hasMimeType(m_mimeType)) {
         return;
     }
     m_service = KApplicationTrader::preferredService(m_mimeType);
 }
 
 void UrlLoader::done(KJob *job)
 {
     //Ensure that m_mimeType and m_request.args.mimeType are equal, since it's not clear what will be used
     m_request.args.setMimeType(m_mimeType);
     if (job) {
         jobFinished(job);
     }
     emit finished(this);
     //If we reach here and m_partDownloaderJob->finished() is false, it means the job hasn't been started in the first place,
     //(because the user canceled the download), so kill it
     if (m_partDownloaderJob && !m_partDownloaderJob->finished()) {
         m_partDownloaderJob->kill();
     }
     deleteLater();
 }
 
 bool UrlLoader::serviceIsKonqueror(KService::Ptr service)
 {
     return service && (service->desktopEntryName() == QLatin1String("konqueror") || service->exec().trimmed() == QLatin1String("konqueror") || service->exec().trimmed().startsWith(QLatin1String("kfmclient")));
 }
 
 void UrlLoader::launchMimeTypeFinderJob()
 {
     m_mimeTypeFinderJob = new KIO::MimeTypeFinderJob(m_url, this);
     m_mimeTypeFinderJob->setUiDelegate(KIO::createDefaultJobUiDelegate(KJobUiDelegate::AutoHandlingEnabled, m_mainWindow));
     m_mimeTypeFinderJob->setSuggestedFileName(m_request.suggestedFileName);
     connect(m_mimeTypeFinderJob, &KIO::MimeTypeFinderJob::result, this, [this](KJob*){mimetypeDeterminedByJob();});
     m_mimeTypeFinderJob->start();
 }
 
 void UrlLoader::mimetypeDeterminedByJob()
 {
     if (m_mimeTypeFinderJob->error()) {
         m_jobErrorCode = m_mimeTypeFinderJob->error();
         m_url = Konq::makeErrorUrl(m_jobErrorCode, m_mimeTypeFinderJob->errorString(), m_url);
         m_mimeType = QStringLiteral("text/html");
         m_action = OpenUrlAction::Embed;
         performAction();
         return;
     }
     m_mimeType=m_mimeTypeFinderJob->mimeType();
     if (m_mimeType.isEmpty()) {
         //Ensure the mimetype is not empty so that goOn (called below) won't attempt to determine it again
         //In theory, KIO::MimeTypeFinderJob::mimeType() should never return an empty string
         m_mimeType = QStringLiteral("application/octet-stream");
     }
     //Only check whether the URL represents an archive when it is a local file. This can be either because
     //QUrl::isLocalFile returns true or because its scheme corresponds to a protocol with class :local
     //(for example, tar)
     if (m_url.isLocalFile() || KProtocolInfo::protocolClass(m_url.scheme()) == QLatin1String(":local")) {
         detectArchiveSettings();
     }
     goOn();
 }
 
 bool UrlLoader::shouldUseDefaultHttpMimeype() const
 {
     if (m_dontPassToWebEnginePart || isMimeTypeKnown(m_mimeType)) {
         return false;
     }
     const QVector<QString> webengineSchemes = {QStringLiteral("error"), QStringLiteral("konq")};
     return m_url.scheme().startsWith(QStringLiteral("http")) || webengineSchemes.contains(m_url.scheme());
 }
 
 DownloaderExtension* UrlLoader::downloaderInterface() const
 {
     if (!m_request.requestingPart) {
         return nullptr;
     }
     return DownloaderExtension::downloader(m_request.requestingPart);
 }
 
 void UrlLoader::detectSettingsForRemoteFiles()
 {
     if (m_url.isLocalFile()) {
         return;
     }
 
     if (m_url.scheme() == QLatin1String("error")) {
         m_letRequestingPartDownloadUrl = false; //error URLs can never be downloaded
         m_mimeType = QLatin1String("text/html");
         m_request.args.setMimeType(QStringLiteral("text/html"));
     }
     else if (shouldUseDefaultHttpMimeype()) {
         // If a part which supports html asked to download the URL, it means it's not html, so don't change its mimetype
         if (m_letRequestingPartDownloadUrl && m_part.supportsMimeType(QStringLiteral("text/html"))) {
             return;
         }
         m_mimeType = QLatin1String("text/html");
         m_request.args.setMimeType(QStringLiteral("text/html"));
     } else if (!m_trustedSource && isTextExecutable(m_mimeType)) {
         m_mimeType = QLatin1String("text/plain");
         m_request.args.setMimeType(QStringLiteral("text/plain"));
     }
 }
 
 int UrlLoader::checkAccessToLocalFile(const QString& path)
 {
     QFileInfo info(path);
     bool fileExists = info.exists();
     if (!info.isReadable()) {
         QFileInfo parentInfo(info.dir().path());
         if (parentInfo.isExecutable() && !fileExists) {
             return KIO::ERR_DOES_NOT_EXIST;
         } else {
             return KIO::ERR_CANNOT_OPEN_FOR_READING;
         }
     } else if (info.isDir() && !info.isExecutable()) {
         return KIO::ERR_CANNOT_ENTER_DIRECTORY;
     } else {
         return 0;
     }
 }
 
 void UrlLoader::detectArchiveSettings()
 {
     // Generic mechanism for redirecting to tar:/<path>/ when clicking on a tar file,
     // zip:/<path>/ when clicking on a zip file, etc.
     // The .protocol file specifies the mimetype that the kioslave handles.
     // Note that we don't use mimetype inheritance since we don't want to
     // open OpenDocument files as zip folders...
     const QString protocol = KProtocolManager::protocolForArchiveMimetype(m_mimeType);
     if (protocol.isEmpty() && !KProtocolInfo::archiveMimetypes(m_url.scheme()).isEmpty() && m_mimeType == QLatin1String("inode/directory")) {
         m_url.setScheme(QStringLiteral("file"));
     } else if (!protocol.isEmpty() && KonqFMSettings::settings()->shouldEmbed(m_mimeType)) {
         m_url.setScheme(protocol);
         //If the URL ends with /, we assume that it was the result of the user using the Up button while displaying the webarchive.
         //This means that we don't want to add the /index.html part, otherwise the effect will be to have the same URL but with
         //an increasing number of slashes before index.html
         if (m_mimeType == QLatin1String("application/x-webarchive") && !m_url.path().endsWith('/')) {
             m_url.setPath(m_url.path() + QStringLiteral("/index.html"));
             m_mimeType = QStringLiteral("text/html");
         } else {
             if (KProtocolManager::outputType(m_url) == KProtocolInfo::T_FILESYSTEM) {
                 if (!m_url.path().endsWith('/')) {
                     m_url.setPath(m_url.path() + '/');
                 }
                 m_mimeType = QStringLiteral("inode/directory");
             } else {
                 m_mimeType.clear();
             }
         }
     }
 }
 
 void UrlLoader::detectSettingsForLocalFiles()
 {
     if (!m_url.isLocalFile()) {
         return;
     }
 
     m_letRequestingPartDownloadUrl = false; //If the file is local, there's no need to download it
 
     m_jobErrorCode = checkAccessToLocalFile(m_url.path());
 
     if (!m_mimeType.isEmpty()) {
         detectArchiveSettings();
         // Redirect to the url in Type=Link desktop files
         if (m_mimeType == QLatin1String("application/x-desktop")) {
             KDesktopFile df(m_url.toLocalFile());
             if (df.hasLinkType()) {
                 m_url = QUrl(df.readUrl());
                 m_mimeType.clear(); // to be determined again
             }
         }
     } else {
         if (QFile::exists(m_url.path())) {
             QMimeDatabase db;
             m_mimeType = db.mimeTypeForFile(m_url.path()).name();
         } else {
             //Treat the nonexisting file as a directory
             m_mimeType = QStringLiteral("inode/directory");
         }
     }
 }
 
 bool UrlLoader::shouldEmbedThis() const
 {
     return !m_dontEmbed && (m_request.forceAutoEmbed || KonqFMSettings::settings()->shouldEmbed(m_mimeType));
 }
 
 void UrlLoader::embed()
 {
     if (m_jobErrorCode) {
         QUrl url = m_url;
         m_url = Konq::makeErrorUrl(m_jobErrorCode, m_url.scheme(), m_url);
         m_mimeType = QStringLiteral("text/html");
         m_part = findPartById(QStringLiteral("webenginepart"));
     }
     bool embedded = m_mainWindow->openView(m_mimeType, m_url, m_view, m_request, m_originalUrl);
     if (embedded || m_embedOrNothing) {
         done();
     } else {
         decideOpenOrSave();
         performAction();
     }
 }
 
 void UrlLoader::save()
 {
     QFileDialog dlg(m_mainWindow);
     dlg.setAcceptMode(QFileDialog::AcceptSave);
     dlg.setWindowTitle(i18n("Save As"));
     dlg.setOption(QFileDialog::DontConfirmOverwrite, false);
     QString suggestedName = !m_request.suggestedFileName.isEmpty() ? m_request.suggestedFileName : m_url.fileName();
     dlg.selectFile(suggestedName);
     dlg.setDirectory(QStandardPaths::writableLocation(QStandardPaths::DownloadLocation));
     //NOTE: we can't use QDialog::open() because the dialog needs to be synchronous so that we can call
     //DownloaderJob::setDownloadPath()
     if (dlg.exec() == QDialog::Rejected) {
         done();
         return;
     }
     performSave(m_url, dlg.selectedUrls().value(0));
 }
 
 void UrlLoader::performSave(const QUrl& orig, const QUrl& dest)
 {
     KJob *job = nullptr;
     if (m_letRequestingPartDownloadUrl) {
         getDownloaderJobFromPart();
         if (m_partDownloaderJob) {
 #if QT_VERSION_MAJOR < 6
             //In KF5, DownloaderJob::startDownload doesn't connect to the signal
             connect(m_partDownloaderJob, &DownloaderJob::downloadResult, this, [this](DownloaderJob *j){done(j);});
 #endif
             m_partDownloaderJob->startDownload(dest.path(), m_mainWindow, this, [this](DownloaderJob *j){done(j);});
             return;
         }
     }
     job = KIO::file_copy(orig, dest, -1, KIO::Overwrite);
     if (!job) {
         done();
         return;
     }
     KJobWidgets::setWindow(job, m_mainWindow);
     KJobTrackerInterface *t = KIO::getJobTracker();
     if (t) {
         t->registerJob(job);
     }
     job->setUiDelegate(KIO::createDefaultJobUiDelegate(KJobUiDelegate::AutoHandlingEnabled, m_mainWindow));
     connect(job, &KJob::finished, this, [this, job](){done(job);});
     job->start();
 }
 
 void UrlLoader::open()
 {
     // Prevention against user stupidity : if the associated app for this mimetype
     // is konqueror/kfmclient, then we'll loop forever.
     if (m_service && serviceIsKonqueror(m_service) && m_mainWindow->refuseExecutingKonqueror(m_mimeType)) {
         return;
     }
     if (m_jobErrorCode != 0) {
         done();
         return;
     }
 
     KJob *job = nullptr;
     KIO::ApplicationLauncherJob *j = new KIO::ApplicationLauncherJob(m_service);
     j->setUrls({m_url});
     j->setUiDelegate(KIO::createDefaultJobUiDelegate(KJobUiDelegate::AutoHandlingEnabled, m_mainWindow));
     if (m_request.tempFile) {
         j->setRunFlags(KIO::ApplicationLauncherJob::DeleteTemporaryFiles);
     }
     job = j;
     connect(job, &KJob::finished, this, [this, job](){done(job);});
     job->start();
 }
 
 void UrlLoader::execute()
 {
     m_openUrlJob = new KIO::OpenUrlJob(m_url, m_mimeType, this);
     m_openUrlJob->setEnableExternalBrowser(false);
     m_openUrlJob->setRunExecutables(true);
     m_openUrlJob->setUiDelegate(KIO::createDefaultJobUiDelegate(KJobUiDelegate::AutoHandlingEnabled, m_mainWindow));
     m_openUrlJob->setSuggestedFileName(m_request.suggestedFileName);
     m_openUrlJob->setDeleteTemporaryFile(m_request.tempFile);
     connect(m_openUrlJob, &KJob::finished, this, [this]{done(m_openUrlJob);});
     m_openUrlJob->start();
 }
 
 //Copied from KParts::BrowserRun::isTextExecutable
 bool UrlLoader::isTextExecutable(const QString &mimeType)
 {
     return ( mimeType == QLatin1String("application/x-desktop") || mimeType == QLatin1String("application/x-shellscript"));
 }
 
 UrlLoader::OpenSaveAnswer UrlLoader::askSaveOrOpen(OpenEmbedMode mode) const
 {
     BrowserOpenOrSaveQuestion dlg(m_mainWindow, m_url, m_mimeType);
     dlg.setSuggestedFileName(m_request.suggestedFileName);
     dlg.setFeatures(BrowserOpenOrSaveQuestion::ServiceSelection);
     BrowserOpenOrSaveQuestion::Result ans = mode == OpenEmbedMode::Open ? dlg.askOpenOrSave() : dlg.askEmbedOrSave();
     OpenUrlAction action;
     switch (ans) {
         case BrowserOpenOrSaveQuestion::Save:
             action = OpenUrlAction::Save;
             break;
         case BrowserOpenOrSaveQuestion::Open:
             action = OpenUrlAction::Open;
             break;
         case BrowserOpenOrSaveQuestion::Embed:
             action = OpenUrlAction::Embed;
             break;
         default:
             action = OpenUrlAction::DoNothing;
     }
     return qMakePair(action, dlg.selectedService());
 }
 
 QString UrlLoader::partForLocalFile(const QString& path)
 {
     QMimeDatabase db;
     QString mimetype = db.mimeTypeForFile(path).name();
 
     KPluginMetaData plugin = preferredPart(mimetype);
     return plugin.pluginId();
 }
 
 UrlLoader::ViewToUse UrlLoader::viewToUse() const
 {
     if (m_view && m_view->isFollowActive()) {
         return ViewToUse::CurrentView;
     }
 
     if (!m_view && !m_request.browserArgs.newTab()) {
         return ViewToUse::CurrentView;
     } else if (!m_view && m_request.browserArgs.newTab()) {
         return ViewToUse::NewTab;
     }
     return ViewToUse::View;
 }
 
 void UrlLoader::jobFinished(KJob* job)
 {
     m_jobErrorCode = job->error();
 }
 
 QDebug operator<<(QDebug dbg, UrlLoader::OpenUrlAction action)
 {
     QDebugStateSaver saver(dbg);
     dbg.resetFormat();
     switch (action) {
         case UrlLoader::OpenUrlAction::UnknwonAction:
             dbg << "UnknownAction";
             break;
         case UrlLoader::OpenUrlAction::DoNothing:
             dbg << "DoNothing";
             break;
         case UrlLoader::OpenUrlAction::Save:
             dbg << "Save";
             break;
         case UrlLoader::OpenUrlAction::Embed:
             dbg << "Embed";
             break;
         case UrlLoader::OpenUrlAction::Open:
             dbg << "Open";
             break;
         case UrlLoader::OpenUrlAction::Execute:
             dbg << "Execute";
             break;
     }
     return dbg;
 }