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#include "InstanceCopyTask.h"
#include <QDebug>
#include <QtConcurrentRun>
#include "FileSystem.h"
#include "NullInstance.h"
#include "pathmatcher/RegexpMatcher.h"
#include "settings/INISettingsObject.h"
InstanceCopyTask::InstanceCopyTask(InstancePtr origInstance, const InstanceCopyPrefs& prefs)
{
m_origInstance = origInstance;
m_keepPlaytime = prefs.isKeepPlaytimeEnabled();
m_useLinks = prefs.isUseSymLinksEnabled();
m_linkRecursively = prefs.isLinkRecursivelyEnabled();
m_useHardLinks = prefs.isLinkRecursivelyEnabled() && prefs.isUseHardLinksEnabled();
m_copySaves = prefs.isLinkRecursivelyEnabled() && prefs.isDontLinkSavesEnabled() && prefs.isCopySavesEnabled();
m_useClone = prefs.isUseCloneEnabled();
QString filters = prefs.getSelectedFiltersAsRegex();
if (m_useLinks || m_useHardLinks) {
if (!filters.isEmpty())
filters += "|";
filters += "instance.cfg";
}
qDebug() << "CopyFilters:" << filters;
if (!filters.isEmpty()) {
// Set regex filter:
// FIXME: get this from the original instance type...
auto matcherReal = new RegexpMatcher(filters);
matcherReal->caseSensitive(false);
m_matcher.reset(matcherReal);
}
}
void InstanceCopyTask::executeTask()
{
setStatus(tr("Copying instance %1").arg(m_origInstance->name()));
auto copySaves = [&]() {
QFileInfo mcDir(FS::PathCombine(m_stagingPath, "minecraft"));
QFileInfo dotMCDir(FS::PathCombine(m_stagingPath, ".minecraft"));
QString staging_mc_dir;
if (mcDir.exists() && !dotMCDir.exists())
staging_mc_dir = mcDir.filePath();
else
staging_mc_dir = dotMCDir.filePath();
FS::copy savesCopy(FS::PathCombine(m_origInstance->gameRoot(), "saves"), FS::PathCombine(staging_mc_dir, "saves"));
savesCopy.followSymlinks(true);
return savesCopy();
};
m_copyFuture = QtConcurrent::run(QThreadPool::globalInstance(), [this, copySaves] {
if (m_useClone) {
FS::clone folderClone(m_origInstance->instanceRoot(), m_stagingPath);
folderClone.matcher(m_matcher.get());
return folderClone();
} else if (m_useLinks || m_useHardLinks) {
FS::create_link folderLink(m_origInstance->instanceRoot(), m_stagingPath);
int depth = m_linkRecursively ? -1 : 0; // we need to at least link the top level instead of the instance folder
folderLink.linkRecursively(true).setMaxDepth(depth).useHardLinks(m_useHardLinks).matcher(m_matcher.get());
bool there_were_errors = false;
if (!folderLink()) {
#if defined Q_OS_WIN32
if (!m_useHardLinks) {
qDebug() << "EXPECTED: Link failure, Windows requires permissions for symlinks";
qDebug() << "attempting to run with privelage";
QEventLoop loop;
bool got_priv_results = false;
connect(&folderLink, &FS::create_link::finishedPrivileged, this, [&](bool gotResults) {
if (!gotResults) {
qDebug() << "Privileged run exited without results!";
}
got_priv_results = gotResults;
loop.quit();
});
folderLink.runPrivileged();
loop.exec(); // wait for the finished signal
for (auto result : folderLink.getResults()) {
if (result.err_value != 0) {
there_were_errors = true;
}
}
if (m_copySaves) {
there_were_errors |= !copySaves();
}
return got_priv_results && !there_were_errors;
} else {
qDebug() << "Link Failed!" << folderLink.getOSError().value() << folderLink.getOSError().message().c_str();
}
#else
qDebug() << "Link Failed!" << folderLink.getOSError().value() << folderLink.getOSError().message().c_str();
#endif
return false;
}
if (m_copySaves) {
there_were_errors |= !copySaves();
}
return !there_were_errors;
} else {
FS::copy folderCopy(m_origInstance->instanceRoot(), m_stagingPath);
folderCopy.followSymlinks(false).matcher(m_matcher.get());
return folderCopy();
}
});
connect(&m_copyFutureWatcher, &QFutureWatcher<bool>::finished, this, &InstanceCopyTask::copyFinished);
connect(&m_copyFutureWatcher, &QFutureWatcher<bool>::canceled, this, &InstanceCopyTask::copyAborted);
m_copyFutureWatcher.setFuture(m_copyFuture);
}
void InstanceCopyTask::copyFinished()
{
auto successful = m_copyFuture.result();
if (!successful) {
emitFailed(tr("Instance folder copy failed."));
return;
}
// FIXME: shouldn't this be able to report errors?
auto instanceSettings = std::make_shared<INISettingsObject>(FS::PathCombine(m_stagingPath, "instance.cfg"));
InstancePtr inst(new NullInstance(m_globalSettings, instanceSettings, m_stagingPath));
inst->setName(name());
inst->setIconKey(m_instIcon);
if (!m_keepPlaytime) {
inst->resetTimePlayed();
}
if (m_useLinks)
inst->addLinkedInstanceId(m_origInstance->id());
if (m_useLinks) {
auto allowed_symlinks_file = QFileInfo(FS::PathCombine(inst->gameRoot(), "allowed_symlinks.txt"));
QByteArray allowed_symlinks;
if (allowed_symlinks_file.exists()) {
allowed_symlinks.append(FS::read(allowed_symlinks_file.filePath()));
if (allowed_symlinks.right(1) != "\n")
allowed_symlinks.append("\n"); // we want to be on a new line
}
allowed_symlinks.append(m_origInstance->gameRoot().toUtf8());
allowed_symlinks.append("\n");
if (allowed_symlinks_file.isSymLink())
FS::deletePath(allowed_symlinks_file
.filePath()); // we dont want to modify the original. also make sure the resulting file is not itself a link.
FS::write(allowed_symlinks_file.filePath(), allowed_symlinks);
}
emitSucceeded();
}
void InstanceCopyTask::copyAborted()
{
emitFailed(tr("Instance folder copy has been aborted."));
return;
}
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