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PrismLauncher/launcher/FileSystem.cpp
Soup b9a1fa3645
Implement popup for metacache 
someone in the Discord ran into an issue somewhat related to the metacache button not working (folder in use err), so this warning makes it more obvious when this happens, though it would be better to find out why it ran into a process conflict

Signed-off-by: Soup <43444191+Soup-64@users.noreply.github.com>
2025-04-06 16:09:42 -04:00

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// SPDX-License-Identifier: GPL-3.0-only
/*
* Prism Launcher - Minecraft Launcher
* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
* Copyright (C) 2022 TheKodeToad <TheKodeToad@proton.me>
* Copyright (C) 2022 Rachel Powers <508861+Ryex@users.noreply.github.com>
*
* 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, version 3.
*
* 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, see <https://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright 2013-2021 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "FileSystem.h"
#include <QPair>
#include "BuildConfig.h"
#include <QDebug>
#include <QDir>
#include <QDirIterator>
#include <QFile>
#include <QFileInfo>
#include <QStandardPaths>
#include <QStorageInfo>
#include <QTextStream>
#include <QUrl>
#include <QtNetwork>
#include <system_error>
#include "DesktopServices.h"
#include "PSaveFile.h"
#include "StringUtils.h"
#include "ui/dialogs/CustomMessageBox.h"
#if defined Q_OS_WIN32
#define NOMINMAX
#define WIN32_LEAN_AND_MEAN
#include <objbase.h>
#include <objidl.h>
#include <shlguid.h>
#include <shlobj.h>
#include <shobjidl.h>
#include <sys/utime.h>
#include <versionhelpers.h>
#include <windows.h>
#include <winnls.h>
#include <string>
// for ShellExecute
#include <Shellapi.h>
#include <objbase.h>
#include <shlobj.h>
#else
#include <utime.h>
#endif
// Snippet from https://github.com/gulrak/filesystem#using-it-as-single-file-header
#ifdef __APPLE__
#include <Availability.h> // for deployment target to support pre-catalina targets without std::fs
#endif // __APPLE__
#if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || (defined(__cplusplus) && __cplusplus >= 201703L)) && defined(__has_include)
#if __has_include(<filesystem>) && (!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500)
#define GHC_USE_STD_FS
#include <filesystem>
namespace fs = std::filesystem;
#endif // MacOS min version check
#endif // Other OSes version check
#ifndef GHC_USE_STD_FS
#include <ghc/filesystem.hpp>
namespace fs = ghc::filesystem;
#endif
// clone
#if defined(Q_OS_LINUX)
#include <errno.h>
#include <fcntl.h> /* Definition of FICLONE* constants */
#include <linux/fs.h>
#include <sys/ioctl.h>
#include <unistd.h>
#elif defined(Q_OS_MACOS)
#include <sys/attr.h>
#include <sys/clonefile.h>
#elif defined(Q_OS_WIN)
// winbtrfs clone vs rundll32 shellbtrfs.dll,ReflinkCopy
#include <fileapi.h>
#include <stdio.h>
#include <tchar.h>
#include <windows.h>
// refs
#include <winioctl.h>
#if defined(__MINGW32__)
#include <crtdbg.h>
#endif
#endif
#if defined(Q_OS_WIN)
#if defined(__MINGW32__)
struct _DUPLICATE_EXTENTS_DATA {
HANDLE FileHandle;
LARGE_INTEGER SourceFileOffset;
LARGE_INTEGER TargetFileOffset;
LARGE_INTEGER ByteCount;
};
using DUPLICATE_EXTENTS_DATA = _DUPLICATE_EXTENTS_DATA;
using PDUPLICATE_EXTENTS_DATA = _DUPLICATE_EXTENTS_DATA*;
struct _FSCTL_GET_INTEGRITY_INFORMATION_BUFFER {
WORD ChecksumAlgorithm; // Checksum algorithm. e.g. CHECKSUM_TYPE_UNCHANGED, CHECKSUM_TYPE_NONE, CHECKSUM_TYPE_CRC32
WORD Reserved; // Must be 0
DWORD Flags; // FSCTL_INTEGRITY_FLAG_xxx
DWORD ChecksumChunkSizeInBytes;
DWORD ClusterSizeInBytes;
};
using FSCTL_GET_INTEGRITY_INFORMATION_BUFFER = _FSCTL_GET_INTEGRITY_INFORMATION_BUFFER;
using PFSCTL_GET_INTEGRITY_INFORMATION_BUFFER = _FSCTL_GET_INTEGRITY_INFORMATION_BUFFER*;
struct _FSCTL_SET_INTEGRITY_INFORMATION_BUFFER {
WORD ChecksumAlgorithm; // Checksum algorithm. e.g. CHECKSUM_TYPE_UNCHANGED, CHECKSUM_TYPE_NONE, CHECKSUM_TYPE_CRC32
WORD Reserved; // Must be 0
DWORD Flags; // FSCTL_INTEGRITY_FLAG_xxx
};
using FSCTL_SET_INTEGRITY_INFORMATION_BUFFER = _FSCTL_SET_INTEGRITY_INFORMATION_BUFFER;
using PFSCTL_SET_INTEGRITY_INFORMATION_BUFFER = _FSCTL_SET_INTEGRITY_INFORMATION_BUFFER*;
#endif
#ifndef FSCTL_DUPLICATE_EXTENTS_TO_FILE
#define FSCTL_DUPLICATE_EXTENTS_TO_FILE CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 209, METHOD_BUFFERED, FILE_WRITE_DATA)
#endif
#ifndef FSCTL_GET_INTEGRITY_INFORMATION
#define FSCTL_GET_INTEGRITY_INFORMATION \
CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 159, METHOD_BUFFERED, FILE_ANY_ACCESS) // FSCTL_GET_INTEGRITY_INFORMATION_BUFFER
#endif
#ifndef FSCTL_SET_INTEGRITY_INFORMATION
#define FSCTL_SET_INTEGRITY_INFORMATION \
CTL_CODE(FILE_DEVICE_FILE_SYSTEM, 160, METHOD_BUFFERED, FILE_READ_DATA | FILE_WRITE_DATA) // FSCTL_SET_INTEGRITY_INFORMATION_BUFFER
#endif
#ifndef ERROR_NOT_CAPABLE
#define ERROR_NOT_CAPABLE 775L
#endif
#ifndef ERROR_BLOCK_TOO_MANY_REFERENCES
#define ERROR_BLOCK_TOO_MANY_REFERENCES 347L
#endif
#endif
namespace FS {
void ensureExists(const QDir& dir)
{
if (!QDir().mkpath(dir.absolutePath())) {
throw FileSystemException("Unable to create folder " + dir.dirName() + " (" + dir.absolutePath() + ")");
}
}
void write(const QString& filename, const QByteArray& data)
{
ensureExists(QFileInfo(filename).dir());
PSaveFile file(filename);
if (!file.open(PSaveFile::WriteOnly)) {
throw FileSystemException("Couldn't open " + filename + " for writing: " + file.errorString());
}
if (data.size() != file.write(data)) {
throw FileSystemException("Error writing data to " + filename + ": " + file.errorString());
}
if (!file.commit()) {
throw FileSystemException("Error while committing data to " + filename + ": " + file.errorString());
}
}
void appendSafe(const QString& filename, const QByteArray& data)
{
ensureExists(QFileInfo(filename).dir());
QByteArray buffer;
try {
buffer = read(filename);
} catch (FileSystemException&) {
buffer = QByteArray();
}
buffer.append(data);
PSaveFile file(filename);
if (!file.open(PSaveFile::WriteOnly)) {
throw FileSystemException("Couldn't open " + filename + " for writing: " + file.errorString());
}
if (buffer.size() != file.write(buffer)) {
throw FileSystemException("Error writing data to " + filename + ": " + file.errorString());
}
if (!file.commit()) {
throw FileSystemException("Error while committing data to " + filename + ": " + file.errorString());
}
}
void append(const QString& filename, const QByteArray& data)
{
ensureExists(QFileInfo(filename).dir());
QFile file(filename);
if (!file.open(QFile::Append)) {
throw FileSystemException("Couldn't open " + filename + " for writing: " + file.errorString());
}
if (data.size() != file.write(data)) {
throw FileSystemException("Error writing data to " + filename + ": " + file.errorString());
}
}
QByteArray read(const QString& filename)
{
QFile file(filename);
if (!file.open(QFile::ReadOnly)) {
throw FileSystemException("Unable to open " + filename + " for reading: " + file.errorString());
}
const qint64 size = file.size();
QByteArray data(int(size), 0);
const qint64 ret = file.read(data.data(), size);
if (ret == -1 || ret != size) {
throw FileSystemException("Error reading data from " + filename + ": " + file.errorString());
}
return data;
}
bool updateTimestamp(const QString& filename)
{
#ifdef Q_OS_WIN32
std::wstring filename_utf_16 = filename.toStdWString();
return (_wutime64(filename_utf_16.c_str(), nullptr) == 0);
#else
QByteArray filenameBA = QFile::encodeName(filename);
return (utime(filenameBA.data(), nullptr) == 0);
#endif
}
bool ensureFilePathExists(QString filenamepath)
{
QFileInfo a(filenamepath);
QDir dir;
QString ensuredPath = a.path();
bool success = dir.mkpath(ensuredPath);
return success;
}
bool ensureFolderPathExists(const QFileInfo folderPath)
{
QDir dir;
QString ensuredPath = folderPath.filePath();
if (folderPath.exists())
return true;
bool success = dir.mkpath(ensuredPath);
return success;
}
bool ensureFolderPathExists(const QString folderPathName)
{
return ensureFolderPathExists(QFileInfo(folderPathName));
}
bool copyFileAttributes(QString src, QString dst)
{
#ifdef Q_OS_WIN32
auto attrs = GetFileAttributesW(src.toStdWString().c_str());
if (attrs == INVALID_FILE_ATTRIBUTES)
return false;
return SetFileAttributesW(dst.toStdWString().c_str(), attrs);
#endif
return true;
}
// needs folders to exists
void copyFolderAttributes(QString src, QString dst, QString relative)
{
auto path = PathCombine(src, relative);
QDir dsrc(src);
while ((path = QFileInfo(path).path()).length() >= src.length()) {
auto dst_path = PathCombine(dst, dsrc.relativeFilePath(path));
copyFileAttributes(path, dst_path);
}
}
/**
* @brief Copies a directory and it's contents from src to dest
* @param offset subdirectory form src to copy to dest
* @return if there was an error during the filecopy
*/
bool copy::operator()(const QString& offset, bool dryRun)
{
using copy_opts = fs::copy_options;
m_copied = 0; // reset counter
m_failedPaths.clear();
// NOTE always deep copy on windows. the alternatives are too messy.
#if defined Q_OS_WIN32
m_followSymlinks = true;
#endif
auto src = PathCombine(m_src.absolutePath(), offset);
auto dst = PathCombine(m_dst.absolutePath(), offset);
std::error_code err;
fs::copy_options opt = copy_opts::none;
// The default behavior is to follow symlinks
if (!m_followSymlinks)
opt |= copy_opts::copy_symlinks;
if (m_overwrite)
opt |= copy_opts::overwrite_existing;
// Function that'll do the actual copying
auto copy_file = [this, dryRun, src, dst, opt, &err](QString src_path, QString relative_dst_path) {
if (m_matcher && (m_matcher->matches(relative_dst_path) != m_whitelist))
return;
auto dst_path = PathCombine(dst, relative_dst_path);
if (!dryRun) {
ensureFilePathExists(dst_path);
#ifdef Q_OS_WIN32
copyFolderAttributes(src, dst, relative_dst_path);
#endif
fs::copy(StringUtils::toStdString(src_path), StringUtils::toStdString(dst_path), opt, err);
}
if (err) {
qWarning() << "Failed to copy files:" << QString::fromStdString(err.message());
qDebug() << "Source file:" << src_path;
qDebug() << "Destination file:" << dst_path;
m_failedPaths.append(dst_path);
emit copyFailed(relative_dst_path);
return;
}
m_copied++;
emit fileCopied(relative_dst_path);
};
// We can't use copy_opts::recursive because we need to take into account the
// blacklisted paths, so we iterate over the source directory, and if there's no blacklist
// match, we copy the file.
QDir src_dir(src);
QDirIterator source_it(src, QDir::Filter::Files | QDir::Filter::Hidden, QDirIterator::Subdirectories);
while (source_it.hasNext()) {
auto src_path = source_it.next();
auto relative_path = src_dir.relativeFilePath(src_path);
copy_file(src_path, relative_path);
}
// If the root src is not a directory, the previous iterator won't run.
if (!fs::is_directory(StringUtils::toStdString(src)))
copy_file(src, "");
return err.value() == 0;
}
/// qDebug print support for the LinkPair struct
QDebug operator<<(QDebug debug, const LinkPair& lp)
{
QDebugStateSaver saver(debug);
debug.nospace() << "LinkPair{ src: " << lp.src << " , dst: " << lp.dst << " }";
return debug;
}
bool create_link::operator()(const QString& offset, bool dryRun)
{
m_linked = 0; // reset counter
m_path_results.clear();
m_links_to_make.clear();
m_path_results.clear();
make_link_list(offset);
if (!dryRun)
return make_links();
return true;
}
/**
* @brief Make a list of all the links to make
* @param offset subdirectory of src to link to dest
*/
void create_link::make_link_list(const QString& offset)
{
for (auto pair : m_path_pairs) {
const QString& srcPath = pair.src;
const QString& dstPath = pair.dst;
auto src = PathCombine(QDir(srcPath).absolutePath(), offset);
auto dst = PathCombine(QDir(dstPath).absolutePath(), offset);
// you can't hard link a directory so make sure if we deal with a directory we do so recursively
if (m_useHardLinks)
m_recursive = true;
// Function that'll do the actual linking
auto link_file = [this, dst](QString src_path, QString relative_dst_path) {
if (m_matcher && (m_matcher->matches(relative_dst_path) != m_whitelist)) {
qDebug() << "path" << relative_dst_path << "in black list or not in whitelist";
return;
}
auto dst_path = PathCombine(dst, relative_dst_path);
LinkPair link = { src_path, dst_path };
m_links_to_make.append(link);
};
if ((!m_recursive) || !fs::is_directory(StringUtils::toStdString(src))) {
if (m_debug)
qDebug() << "linking single file or dir:" << src << "to" << dst;
link_file(src, "");
} else {
if (m_debug)
qDebug() << "linking recursively:" << src << "to" << dst << ", max_depth:" << m_max_depth;
QDir src_dir(src);
QDirIterator source_it(src, QDir::Filter::Files | QDir::Filter::Hidden, QDirIterator::Subdirectories);
QStringList linkedPaths;
while (source_it.hasNext()) {
auto src_path = source_it.next();
auto relative_path = src_dir.relativeFilePath(src_path);
if (m_max_depth >= 0 && pathDepth(relative_path) > m_max_depth) {
relative_path = pathTruncate(relative_path, m_max_depth);
src_path = src_dir.filePath(relative_path);
if (linkedPaths.contains(src_path)) {
continue;
}
}
linkedPaths.append(src_path);
link_file(src_path, relative_path);
}
}
}
}
bool create_link::make_links()
{
for (auto link : m_links_to_make) {
QString src_path = link.src;
QString dst_path = link.dst;
auto src_path_std = StringUtils::toStdString(link.src);
auto dst_path_std = StringUtils::toStdString(link.dst);
ensureFilePathExists(dst_path);
if (m_useHardLinks) {
if (m_debug)
qDebug() << "making hard link:" << src_path << "to" << dst_path;
fs::create_hard_link(src_path_std, dst_path_std, m_os_err);
} else if (fs::is_directory(src_path_std)) {
if (m_debug)
qDebug() << "making directory_symlink:" << src_path << "to" << dst_path;
fs::create_directory_symlink(src_path_std, dst_path_std, m_os_err);
} else {
if (m_debug)
qDebug() << "making symlink:" << src_path << "to" << dst_path;
fs::create_symlink(src_path_std, dst_path_std, m_os_err);
}
if (m_os_err) {
qWarning() << "Failed to link files:" << QString::fromStdString(m_os_err.message());
qDebug() << "Source file:" << src_path;
qDebug() << "Destination file:" << dst_path;
qDebug() << "Error category:" << m_os_err.category().name();
qDebug() << "Error code:" << m_os_err.value();
emit linkFailed(src_path, dst_path, QString::fromStdString(m_os_err.message()), m_os_err.value());
} else {
m_linked++;
emit fileLinked(src_path, dst_path);
}
if (m_os_err)
return false;
}
return true;
}
void create_link::runPrivileged(const QString& offset)
{
m_linked = 0; // reset counter
m_path_results.clear();
m_links_to_make.clear();
bool gotResults = false;
make_link_list(offset);
QString serverName = BuildConfig.LAUNCHER_APP_BINARY_NAME + "_filelink_server" + StringUtils::getRandomAlphaNumeric();
connect(&m_linkServer, &QLocalServer::newConnection, this, [this, &gotResults]() {
qDebug() << "Client connected, sending out pairs";
// construct block of data to send
QByteArray block;
QDataStream out(&block, QIODevice::WriteOnly);
qint32 blocksize = quint32(sizeof(quint32));
for (auto link : m_links_to_make) {
blocksize += quint32(link.src.size());
blocksize += quint32(link.dst.size());
}
qDebug() << "About to write block of size:" << blocksize;
out << blocksize;
out << quint32(m_links_to_make.length());
for (auto link : m_links_to_make) {
out << link.src;
out << link.dst;
}
QLocalSocket* clientConnection = m_linkServer.nextPendingConnection();
connect(clientConnection, &QLocalSocket::disconnected, clientConnection, &QLocalSocket::deleteLater);
connect(clientConnection, &QLocalSocket::readyRead, this, [&, clientConnection]() {
QDataStream in;
quint32 blockSize = 0;
in.setDevice(clientConnection);
qDebug() << "Reading path results from client";
qDebug() << "bytes available" << clientConnection->bytesAvailable();
// Relies on the fact that QDataStream serializes a quint32 into
// sizeof(quint32) bytes
if (clientConnection->bytesAvailable() < (int)sizeof(quint32))
return;
qDebug() << "reading block size";
in >> blockSize;
qDebug() << "blocksize is" << blockSize;
qDebug() << "bytes available" << clientConnection->bytesAvailable();
if (clientConnection->bytesAvailable() < blockSize || in.atEnd())
return;
quint32 numResults;
in >> numResults;
qDebug() << "numResults" << numResults;
for (quint32 i = 0; i < numResults; i++) {
FS::LinkResult result;
in >> result.src;
in >> result.dst;
in >> result.err_msg;
qint32 err_value;
in >> err_value;
result.err_value = err_value;
if (result.err_value) {
qDebug() << "privileged link fail" << result.src << "to" << result.dst << "code" << result.err_value << result.err_msg;
emit linkFailed(result.src, result.dst, result.err_msg, result.err_value);
} else {
qDebug() << "privileged link success" << result.src << "to" << result.dst;
m_linked++;
emit fileLinked(result.src, result.dst);
}
m_path_results.append(result);
}
gotResults = true;
qDebug() << "results received, closing connection";
clientConnection->close();
});
qint64 byteswritten = clientConnection->write(block);
bool bytesflushed = clientConnection->flush();
qDebug() << "block flushed" << byteswritten << bytesflushed;
});
qDebug() << "Listening on pipe" << serverName;
if (!m_linkServer.listen(serverName)) {
qDebug() << "Unable to start local pipe server on" << serverName << ":" << m_linkServer.errorString();
return;
}
ExternalLinkFileProcess* linkFileProcess = new ExternalLinkFileProcess(serverName, m_useHardLinks, this);
connect(linkFileProcess, &ExternalLinkFileProcess::processExited, this, [this, gotResults]() { emit finishedPrivileged(gotResults); });
connect(linkFileProcess, &ExternalLinkFileProcess::finished, linkFileProcess, &QObject::deleteLater);
linkFileProcess->start();
}
void ExternalLinkFileProcess::runLinkFile()
{
QString fileLinkExe =
PathCombine(QCoreApplication::instance()->applicationDirPath(), BuildConfig.LAUNCHER_APP_BINARY_NAME + "_filelink");
QString params = "-s " + m_server;
params += " -H " + QVariant(m_useHardLinks).toString();
#if defined Q_OS_WIN32
SHELLEXECUTEINFO ShExecInfo;
fileLinkExe = fileLinkExe + ".exe";
qDebug() << "Running: runas" << fileLinkExe << params;
LPCWSTR programNameWin = (const wchar_t*)fileLinkExe.utf16();
LPCWSTR paramsWin = (const wchar_t*)params.utf16();
// https://learn.microsoft.com/en-us/windows/win32/api/shellapi/ns-shellapi-shellexecuteinfoa
ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
ShExecInfo.hwnd = NULL; // Optional. A handle to the owner window, used to display and position any UI that the system might produce
// while executing this function.
ShExecInfo.lpVerb = L"runas"; // elevate to admin, show UAC
ShExecInfo.lpFile = programNameWin;
ShExecInfo.lpParameters = paramsWin;
ShExecInfo.lpDirectory = NULL;
ShExecInfo.nShow = SW_HIDE;
ShExecInfo.hInstApp = NULL;
ShellExecuteEx(&ShExecInfo);
WaitForSingleObject(ShExecInfo.hProcess, INFINITE);
CloseHandle(ShExecInfo.hProcess);
#endif
qDebug() << "Process exited";
}
bool moveByCopy(const QString& source, const QString& dest)
{
if (!copy(source, dest)()) { // copy
qDebug() << "Copy of" << source << "to" << dest << "failed!";
return false;
}
if (!deletePath(source)) { // remove original
qDebug() << "Deletion of" << source << "failed!";
return false;
};
return true;
}
bool move(const QString& source, const QString& dest)
{
std::error_code err;
ensureFilePathExists(dest);
fs::rename(StringUtils::toStdString(source), StringUtils::toStdString(dest), err);
if (err.value() != 0) {
if (moveByCopy(source, dest))
return true;
qDebug() << "Move of" << source << "to" << dest << "failed!";
qWarning() << "Failed to move file:" << QString::fromStdString(err.message()) << QString::number(err.value());
return false;
}
return true;
}
bool deletePath(QString path)
{
std::error_code err;
fs::remove_all(StringUtils::toStdString(path), err);
if (err) {
qWarning() << "Failed to remove files:" << QString::fromStdString(err.message());
}
return err.value() == 0;
}
bool trash(QString path, QString* pathInTrash)
{
#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
return false;
#else
// FIXME: Figure out trash in Flatpak. Qt seemingly doesn't use the Trash portal
if (DesktopServices::isFlatpak())
return false;
#if defined Q_OS_WIN32
if (IsWindowsServer())
return false;
#endif
return QFile::moveToTrash(path, pathInTrash);
#endif
}
QString PathCombine(const QString& path1, const QString& path2)
{
if (!path1.size())
return path2;
if (!path2.size())
return path1;
return QDir::cleanPath(path1 + QDir::separator() + path2);
}
QString PathCombine(const QString& path1, const QString& path2, const QString& path3)
{
return PathCombine(PathCombine(path1, path2), path3);
}
QString PathCombine(const QString& path1, const QString& path2, const QString& path3, const QString& path4)
{
return PathCombine(PathCombine(path1, path2, path3), path4);
}
QString AbsolutePath(const QString& path)
{
return QFileInfo(path).absolutePath();
}
int pathDepth(const QString& path)
{
if (path.isEmpty())
return 0;
QFileInfo info(path);
#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
auto parts = QDir::toNativeSeparators(info.path()).split(QDir::separator(), QString::SkipEmptyParts);
#else
auto parts = QDir::toNativeSeparators(info.path()).split(QDir::separator(), Qt::SkipEmptyParts);
#endif
int numParts = parts.length();
numParts -= parts.count(".");
numParts -= parts.count("..") * 2;
return numParts;
}
QString pathTruncate(const QString& path, int depth)
{
if (path.isEmpty() || (depth < 0))
return "";
QString trunc = QFileInfo(path).path();
if (pathDepth(trunc) > depth) {
return pathTruncate(trunc, depth);
}
#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
auto parts = QDir::toNativeSeparators(trunc).split(QDir::separator(), QString::SkipEmptyParts);
#else
auto parts = QDir::toNativeSeparators(trunc).split(QDir::separator(), Qt::SkipEmptyParts);
#endif
if (parts.startsWith(".") && !path.startsWith(".")) {
parts.removeFirst();
}
if (QDir::toNativeSeparators(path).startsWith(QDir::separator())) {
parts.prepend("");
}
trunc = parts.join(QDir::separator());
return trunc;
}
QString ResolveExecutable(QString path)
{
if (path.isEmpty()) {
return QString();
}
if (!path.contains('/')) {
path = QStandardPaths::findExecutable(path);
}
QFileInfo pathInfo(path);
if (!pathInfo.exists() || !pathInfo.isExecutable()) {
return QString();
}
return pathInfo.absoluteFilePath();
}
/**
* Normalize path
*
* Any paths inside the current folder will be normalized to relative paths (to current)
* Other paths will be made absolute
*/
QString NormalizePath(QString path)
{
QDir a = QDir::currentPath();
QString currentAbsolute = a.absolutePath();
QDir b(path);
QString newAbsolute = b.absolutePath();
if (newAbsolute.startsWith(currentAbsolute)) {
return a.relativeFilePath(newAbsolute);
} else {
return newAbsolute;
}
}
static const QString BAD_WIN_CHARS = "<>:\"|?*\r\n";
static const QString BAD_NTFS_CHARS = "<>:\"|?*";
static const QString BAD_HFS_CHARS = ":";
static const QString BAD_FILENAME_CHARS = BAD_WIN_CHARS + "\\/";
QString RemoveInvalidFilenameChars(QString string, QChar replaceWith)
{
for (int i = 0; i < string.length(); i++)
if (string.at(i) < ' ' || BAD_FILENAME_CHARS.contains(string.at(i)))
string[i] = replaceWith;
return string;
}
QString RemoveInvalidPathChars(QString path, QChar replaceWith)
{
QString invalidChars;
#ifdef Q_OS_WIN
invalidChars = BAD_WIN_CHARS;
#endif
// the null character is ignored in this check as it was not a problem until now
switch (statFS(path).fsType) {
case FilesystemType::FAT: // similar to NTFS
/* fallthrough */
case FilesystemType::NTFS:
/* fallthrough */
case FilesystemType::REFS: // similar to NTFS(should be available only on windows)
invalidChars += BAD_NTFS_CHARS;
break;
// case FilesystemType::EXT:
// case FilesystemType::EXT_2_OLD:
// case FilesystemType::EXT_2_3_4:
// case FilesystemType::XFS:
// case FilesystemType::BTRFS:
// case FilesystemType::NFS:
// case FilesystemType::ZFS:
case FilesystemType::APFS:
/* fallthrough */
case FilesystemType::HFS:
/* fallthrough */
case FilesystemType::HFSPLUS:
/* fallthrough */
case FilesystemType::HFSX:
invalidChars += BAD_HFS_CHARS;
break;
// case FilesystemType::FUSEBLK:
// case FilesystemType::F2FS:
// case FilesystemType::UNKNOWN:
default:
break;
}
if (invalidChars.size() != 0) {
for (int i = 0; i < path.length(); i++) {
if (path.at(i) < ' ' || invalidChars.contains(path.at(i))) {
path[i] = replaceWith;
}
}
}
return path;
}
QString DirNameFromString(QString string, QString inDir)
{
int num = 0;
QString baseName = RemoveInvalidFilenameChars(string, '-');
QString dirName;
do {
if (num == 0) {
dirName = baseName;
} else {
dirName = baseName + "(" + QString::number(num) + ")";
}
// If it's over 9000
if (num > 9000)
return "";
num++;
} while (QFileInfo(PathCombine(inDir, dirName)).exists());
return dirName;
}
// Does the folder path contain any '!'? If yes, return true, otherwise false.
// (This is a problem for Java)
bool checkProblemticPathJava(QDir folder)
{
QString pathfoldername = folder.absolutePath();
return pathfoldername.contains("!", Qt::CaseInsensitive);
}
QString getDesktopDir()
{
return QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);
}
// Cross-platform Shortcut creation
bool createShortcut(QString destination, QString target, QStringList args, QString name, QString icon)
{
if (destination.isEmpty()) {
destination = PathCombine(getDesktopDir(), RemoveInvalidFilenameChars(name));
}
if (!ensureFilePathExists(destination)) {
qWarning() << "Destination path can't be created!";
return false;
}
#if defined(Q_OS_MACOS)
// Create the Application
QDir applicationDirectory =
QStandardPaths::writableLocation(QStandardPaths::ApplicationsLocation) + "/" + BuildConfig.LAUNCHER_NAME + " Instances/";
if (!applicationDirectory.mkpath(".")) {
qWarning() << "Couldn't create application directory";
return false;
}
QDir application = applicationDirectory.path() + "/" + name + ".app/";
if (application.exists()) {
qWarning() << "Application already exists!";
return false;
}
if (!application.mkpath(".")) {
qWarning() << "Couldn't create application";
return false;
}
QDir content = application.path() + "/Contents/";
QDir resources = content.path() + "/Resources/";
QDir binaryDir = content.path() + "/MacOS/";
QFile info = content.path() + "/Info.plist";
if (!(content.mkpath(".") && resources.mkpath(".") && binaryDir.mkpath("."))) {
qWarning() << "Couldn't create directories within application";
return false;
}
info.open(QIODevice::WriteOnly | QIODevice::Text);
QFile(icon).rename(resources.path() + "/Icon.icns");
// Create the Command file
QString exec = binaryDir.path() + "/Run.command";
QFile f(exec);
f.open(QIODevice::WriteOnly | QIODevice::Text);
QTextStream stream(&f);
QString argstring;
if (!args.empty())
argstring = " \"" + args.join("\" \"") + "\"";
stream << "#!/bin/bash" << "\n";
stream << "\"" << target << "\" " << argstring << "\n";
stream.flush();
f.close();
f.setPermissions(f.permissions() | QFileDevice::ExeOwner | QFileDevice::ExeGroup | QFileDevice::ExeOther);
// Generate the Info.plist
QTextStream infoStream(&info);
infoStream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?> \n"
"<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\" "
"\"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">"
"<plist version=\"1.0\">\n"
"<dict>\n"
" <key>CFBundleExecutable</key>\n"
" <string>Run.command</string>\n" // The path to the executable
" <key>CFBundleIconFile</key>\n"
" <string>Icon.icns</string>\n"
" <key>CFBundleName</key>\n"
" <string>"
<< name
<< "</string>\n" // Name of the application
" <key>CFBundlePackageType</key>\n"
" <string>APPL</string>\n"
" <key>CFBundleShortVersionString</key>\n"
" <string>1.0</string>\n"
" <key>CFBundleVersion</key>\n"
" <string>1.0</string>\n"
"</dict>\n"
"</plist>";
return true;
#elif defined(Q_OS_LINUX) || defined(Q_OS_FREEBSD) || defined(Q_OS_OPENBSD)
if (!destination.endsWith(".desktop")) // in case of isFlatpak destination is already populated
destination += ".desktop";
QFile f(destination);
f.open(QIODevice::WriteOnly | QIODevice::Text);
QTextStream stream(&f);
QString argstring;
if (!args.empty())
argstring = " '" + args.join("' '") + "'";
stream << "[Desktop Entry]" << "\n";
stream << "Type=Application" << "\n";
stream << "Categories=Game;ActionGame;AdventureGame;Simulation" << "\n";
stream << "Exec=\"" << target.toLocal8Bit() << "\"" << argstring.toLocal8Bit() << "\n";
stream << "Name=" << name.toLocal8Bit() << "\n";
if (!icon.isEmpty()) {
stream << "Icon=" << icon.toLocal8Bit() << "\n";
}
stream.flush();
f.close();
f.setPermissions(f.permissions() | QFileDevice::ExeOwner | QFileDevice::ExeGroup | QFileDevice::ExeOther);
return true;
#elif defined(Q_OS_WIN)
QFileInfo targetInfo(target);
if (!targetInfo.exists()) {
qWarning() << "Target file does not exist!";
return false;
}
target = targetInfo.absoluteFilePath();
if (target.length() >= MAX_PATH) {
qWarning() << "Target file path is too long!";
return false;
}
if (!icon.isEmpty() && icon.length() >= MAX_PATH) {
qWarning() << "Icon path is too long!";
return false;
}
destination += ".lnk";
if (destination.length() >= MAX_PATH) {
qWarning() << "Destination path is too long!";
return false;
}
QString argStr;
int argCount = args.count();
for (int i = 0; i < argCount; i++) {
if (args[i].contains(' ')) {
argStr.append('"').append(args[i]).append('"');
} else {
argStr.append(args[i]);
}
if (i < argCount - 1) {
argStr.append(" ");
}
}
if (argStr.length() >= MAX_PATH) {
qWarning() << "Arguments string is too long!";
return false;
}
HRESULT hres;
// ...yes, you need to initialize the entire COM stack just to make a shortcut
hres = CoInitialize(nullptr);
if (FAILED(hres)) {
qWarning() << "Failed to initialize COM!";
return false;
}
WCHAR wsz[MAX_PATH];
IShellLink* psl;
// create an IShellLink instance - this stores the shortcut's attributes
hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (LPVOID*)&psl);
if (SUCCEEDED(hres)) {
wmemset(wsz, 0, MAX_PATH);
target.toWCharArray(wsz);
psl->SetPath(wsz);
wmemset(wsz, 0, MAX_PATH);
argStr.toWCharArray(wsz);
psl->SetArguments(wsz);
wmemset(wsz, 0, MAX_PATH);
targetInfo.absolutePath().toWCharArray(wsz);
psl->SetWorkingDirectory(wsz); // "Starts in" attribute
if (!icon.isEmpty()) {
wmemset(wsz, 0, MAX_PATH);
icon.toWCharArray(wsz);
psl->SetIconLocation(wsz, 0);
}
// query an IPersistFile interface from our IShellLink instance
// this is the interface that will actually let us save the shortcut to disk!
IPersistFile* ppf;
hres = psl->QueryInterface(IID_IPersistFile, (LPVOID*)&ppf);
if (SUCCEEDED(hres)) {
wmemset(wsz, 0, MAX_PATH);
destination.toWCharArray(wsz);
hres = ppf->Save(wsz, TRUE);
if (FAILED(hres)) {
qWarning() << "IPresistFile->Save() failed";
qWarning() << "hres = " << hres;
}
ppf->Release();
} else {
qWarning() << "Failed to query IPersistFile interface from IShellLink instance";
qWarning() << "hres = " << hres;
}
psl->Release();
} else {
qWarning() << "Failed to create IShellLink instance";
qWarning() << "hres = " << hres;
}
// go away COM, nobody likes you
CoUninitialize();
return SUCCEEDED(hres);
#else
qWarning("Desktop Shortcuts not supported on your platform!");
return false;
#endif
}
bool overrideFolder(QString overwritten_path, QString override_path)
{
using copy_opts = fs::copy_options;
if (!FS::ensureFolderPathExists(overwritten_path))
return false;
std::error_code err;
fs::copy_options opt = copy_opts::recursive | copy_opts::overwrite_existing;
// FIXME: hello traveller! Apparently std::copy does NOT overwrite existing files on GNU libstdc++ on Windows?
fs::copy(StringUtils::toStdString(override_path), StringUtils::toStdString(overwritten_path), opt, err);
if (err) {
qCritical() << QString("Failed to apply override from %1 to %2").arg(override_path, overwritten_path);
qCritical() << "Reason:" << QString::fromStdString(err.message());
}
return err.value() == 0;
}
QString getFilesystemTypeName(FilesystemType type)
{
auto iter = s_filesystem_type_names.constFind(type);
if (iter != s_filesystem_type_names.constEnd()) {
return iter.value().constFirst();
}
return getFilesystemTypeName(FilesystemType::UNKNOWN);
}
FilesystemType getFilesystemTypeFuzzy(const QString& name)
{
for (auto iter = s_filesystem_type_names.constBegin(); iter != s_filesystem_type_names.constEnd(); ++iter) {
auto fs_names = iter.value();
for (auto fs_name : fs_names) {
if (name.toUpper().contains(fs_name.toUpper()))
return iter.key();
}
}
return FilesystemType::UNKNOWN;
}
FilesystemType getFilesystemType(const QString& name)
{
for (auto iter = s_filesystem_type_names.constBegin(); iter != s_filesystem_type_names.constEnd(); ++iter) {
auto fs_names = iter.value();
if (fs_names.contains(name.toUpper()))
return iter.key();
}
return FilesystemType::UNKNOWN;
}
/**
* @brief path to the near ancestor that exists
*
*/
QString nearestExistentAncestor(const QString& path)
{
if (QFileInfo::exists(path))
return path;
QDir dir(path);
if (!dir.makeAbsolute())
return {};
do {
dir.setPath(QDir::cleanPath(dir.filePath(QStringLiteral(".."))));
} while (!dir.exists() && !dir.isRoot());
return dir.exists() ? dir.path() : QString();
}
/**
* @brief colect information about the filesystem under a file
*
*/
FilesystemInfo statFS(const QString& path)
{
FilesystemInfo info;
QStorageInfo storage_info(nearestExistentAncestor(path));
info.fsTypeName = storage_info.fileSystemType();
info.fsType = getFilesystemTypeFuzzy(info.fsTypeName);
info.blockSize = storage_info.blockSize();
info.bytesAvailable = storage_info.bytesAvailable();
info.bytesFree = storage_info.bytesFree();
info.bytesTotal = storage_info.bytesTotal();
info.name = storage_info.name();
info.rootPath = storage_info.rootPath();
return info;
}
/**
* @brief if the Filesystem is reflink/clone capable
*
*/
bool canCloneOnFS(const QString& path)
{
FilesystemInfo info = statFS(path);
return canCloneOnFS(info);
}
bool canCloneOnFS(const FilesystemInfo& info)
{
return canCloneOnFS(info.fsType);
}
bool canCloneOnFS(FilesystemType type)
{
return s_clone_filesystems.contains(type);
}
/**
* @brief if the Filesystem is reflink/clone capable and both paths are on the same device
*
*/
bool canClone(const QString& src, const QString& dst)
{
auto srcVInfo = statFS(src);
auto dstVInfo = statFS(dst);
bool sameDevice = srcVInfo.rootPath == dstVInfo.rootPath;
return sameDevice && canCloneOnFS(srcVInfo) && canCloneOnFS(dstVInfo);
}
/**
* @brief reflink/clones a directory and it's contents from src to dest
* @param offset subdirectory form src to copy to dest
* @return if there was an error during the filecopy
*/
bool clone::operator()(const QString& offset, bool dryRun)
{
if (!canClone(m_src.absolutePath(), m_dst.absolutePath())) {
qWarning() << "Can not clone: not same device or not clone/reflink filesystem";
qDebug() << "Source path:" << m_src.absolutePath();
qDebug() << "Destination path:" << m_dst.absolutePath();
emit cloneFailed(m_src.absolutePath(), m_dst.absolutePath());
return false;
}
m_cloned = 0; // reset counter
m_failedClones.clear();
auto src = PathCombine(m_src.absolutePath(), offset);
auto dst = PathCombine(m_dst.absolutePath(), offset);
std::error_code err;
// Function that'll do the actual cloneing
auto cloneFile = [this, dryRun, dst, &err](QString src_path, QString relative_dst_path) {
if (m_matcher && (m_matcher->matches(relative_dst_path) != m_whitelist))
return;
auto dst_path = PathCombine(dst, relative_dst_path);
if (!dryRun) {
ensureFilePathExists(dst_path);
clone_file(src_path, dst_path, err);
}
if (err) {
qDebug() << "Failed to clone files: error" << err.value() << "message" << QString::fromStdString(err.message());
qDebug() << "Source file:" << src_path;
qDebug() << "Destination file:" << dst_path;
m_failedClones.append(qMakePair(src_path, dst_path));
emit cloneFailed(src_path, dst_path);
return;
}
m_cloned++;
emit fileCloned(src_path, dst_path);
};
// We can't use copy_opts::recursive because we need to take into account the
// blacklisted paths, so we iterate over the source directory, and if there's no blacklist
// match, we copy the file.
QDir src_dir(src);
QDirIterator source_it(src, QDir::Filter::Files | QDir::Filter::Hidden, QDirIterator::Subdirectories);
while (source_it.hasNext()) {
auto src_path = source_it.next();
auto relative_path = src_dir.relativeFilePath(src_path);
cloneFile(src_path, relative_path);
}
// If the root src is not a directory, the previous iterator won't run.
if (!fs::is_directory(StringUtils::toStdString(src)))
cloneFile(src, "");
return err.value() == 0;
}
/**
* @brief clone/reflink file from src to dst
*
*/
bool clone_file(const QString& src, const QString& dst, std::error_code& ec)
{
auto src_path = StringUtils::toStdString(QDir::toNativeSeparators(QFileInfo(src).absoluteFilePath()));
auto dst_path = StringUtils::toStdString(QDir::toNativeSeparators(QFileInfo(dst).absoluteFilePath()));
FilesystemInfo srcinfo = statFS(src);
FilesystemInfo dstinfo = statFS(dst);
if ((srcinfo.rootPath != dstinfo.rootPath) || (srcinfo.fsType != dstinfo.fsType)) {
ec = std::make_error_code(std::errc::not_supported);
qWarning() << "reflink/clone must be to the same device and filesystem! src and dst root filesystems do not match.";
return false;
}
#if defined(Q_OS_WIN)
if (!win_ioctl_clone(src_path, dst_path, ec)) {
qDebug() << "failed win_ioctl_clone";
qWarning() << "clone/reflink not supported on windows outside of btrfs or ReFS!";
qWarning() << "check out https://github.com/maharmstone/btrfs for btrfs support!";
return false;
}
#elif defined(Q_OS_LINUX)
if (!linux_ficlone(src_path, dst_path, ec)) {
qDebug() << "failed linux_ficlone:";
return false;
}
#elif defined(Q_OS_MACOS)
if (!macos_bsd_clonefile(src_path, dst_path, ec)) {
qDebug() << "failed macos_bsd_clonefile:";
return false;
}
#else
qWarning() << "clone/reflink not supported! unknown OS";
ec = std::make_error_code(std::errc::not_supported);
return false;
#endif
return true;
}
#if defined(Q_OS_WIN)
static long RoundUpToPowerOf2(long originalValue, long roundingMultiplePowerOf2)
{
long mask = roundingMultiplePowerOf2 - 1;
return (originalValue + mask) & ~mask;
}
bool win_ioctl_clone(const std::wstring& src_path, const std::wstring& dst_path, std::error_code& ec)
{
/**
* This algorithm inspired from https://github.com/0xbadfca11/reflink
* LICENSE MIT
*
* Additional references
* https://learn.microsoft.com/en-us/windows/win32/api/winioctl/ni-winioctl-fsctl_duplicate_extents_to_file
* https://github.com/microsoft/CopyOnWrite/blob/main/lib/Windows/WindowsCopyOnWriteFilesystem.cs#L94
*/
HANDLE hSourceFile = CreateFileW(src_path.c_str(), GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, 0, nullptr);
if (hSourceFile == INVALID_HANDLE_VALUE) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to open source file" << src_path.c_str();
return false;
}
ULONG fs_flags;
if (!GetVolumeInformationByHandleW(hSourceFile, nullptr, 0, nullptr, nullptr, &fs_flags, nullptr, 0)) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to get Filesystem information for " << src_path.c_str();
CloseHandle(hSourceFile);
return false;
}
if (!(fs_flags & FILE_SUPPORTS_BLOCK_REFCOUNTING)) {
SetLastError(ERROR_NOT_CAPABLE);
ec = std::error_code(GetLastError(), std::system_category());
qWarning() << "Filesystem at " << src_path.c_str() << " does not support reflink";
CloseHandle(hSourceFile);
return false;
}
FILE_END_OF_FILE_INFO sourceFileLength;
if (!GetFileSizeEx(hSourceFile, &sourceFileLength.EndOfFile)) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to size of source file" << src_path.c_str();
CloseHandle(hSourceFile);
return false;
}
FILE_BASIC_INFO sourceFileBasicInfo;
if (!GetFileInformationByHandleEx(hSourceFile, FileBasicInfo, &sourceFileBasicInfo, sizeof(sourceFileBasicInfo))) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to source file info" << src_path.c_str();
CloseHandle(hSourceFile);
return false;
}
ULONG junk;
FSCTL_GET_INTEGRITY_INFORMATION_BUFFER sourceFileIntegrity;
if (!DeviceIoControl(hSourceFile, FSCTL_GET_INTEGRITY_INFORMATION, nullptr, 0, &sourceFileIntegrity, sizeof(sourceFileIntegrity), &junk,
nullptr)) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to source file integrity info" << src_path.c_str();
CloseHandle(hSourceFile);
return false;
}
HANDLE hDestFile = CreateFileW(dst_path.c_str(), GENERIC_READ | GENERIC_WRITE | DELETE, 0, nullptr, CREATE_NEW, 0, hSourceFile);
if (hDestFile == INVALID_HANDLE_VALUE) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to open dest file" << dst_path.c_str();
CloseHandle(hSourceFile);
return false;
}
FILE_DISPOSITION_INFO destFileDispose = { TRUE };
if (!SetFileInformationByHandle(hDestFile, FileDispositionInfo, &destFileDispose, sizeof(destFileDispose))) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to set dest file info" << dst_path.c_str();
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return false;
}
if (!DeviceIoControl(hDestFile, FSCTL_SET_SPARSE, nullptr, 0, nullptr, 0, &junk, nullptr)) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to set dest sparseness" << dst_path.c_str();
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return false;
}
FSCTL_SET_INTEGRITY_INFORMATION_BUFFER setDestFileintegrity = { sourceFileIntegrity.ChecksumAlgorithm, sourceFileIntegrity.Reserved,
sourceFileIntegrity.Flags };
if (!DeviceIoControl(hDestFile, FSCTL_SET_INTEGRITY_INFORMATION, &setDestFileintegrity, sizeof(setDestFileintegrity), nullptr, 0,
nullptr, nullptr)) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to set dest file integrity info" << dst_path.c_str();
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return false;
}
if (!SetFileInformationByHandle(hDestFile, FileEndOfFileInfo, &sourceFileLength, sizeof(sourceFileLength))) {
ec = std::error_code(GetLastError(), std::system_category());
qDebug() << "Failed to set dest file size" << dst_path.c_str();
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return false;
}
const LONG64 splitThreshold = (1LL << 32) - sourceFileIntegrity.ClusterSizeInBytes;
DUPLICATE_EXTENTS_DATA dupExtent;
dupExtent.FileHandle = hSourceFile;
for (LONG64 offset = 0, remain = RoundUpToPowerOf2(sourceFileLength.EndOfFile.QuadPart, sourceFileIntegrity.ClusterSizeInBytes);
remain > 0; offset += splitThreshold, remain -= splitThreshold) {
dupExtent.SourceFileOffset.QuadPart = dupExtent.TargetFileOffset.QuadPart = offset;
dupExtent.ByteCount.QuadPart = std::min(splitThreshold, remain);
if (!DeviceIoControl(hDestFile, FSCTL_DUPLICATE_EXTENTS_TO_FILE, &dupExtent, sizeof(dupExtent), nullptr, 0, &junk, nullptr)) {
DWORD err = GetLastError();
QString additionalMessage;
if (err == ERROR_BLOCK_TOO_MANY_REFERENCES) {
static const int MaxClonesPerFile = 8175;
additionalMessage =
QString(
" This is ERROR_BLOCK_TOO_MANY_REFERENCES and may mean you have surpassed the maximum "
"allowed %1 references for a single file. "
"See "
"https://docs.microsoft.com/en-us/windows-server/storage/refs/block-cloning#functionality-restrictions-and-remarks")
.arg(MaxClonesPerFile);
}
ec = std::error_code(err, std::system_category());
qDebug() << "Failed copy-on-write cloning of" << src_path.c_str() << "to" << dst_path.c_str() << "with error" << err
<< additionalMessage;
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return false;
}
}
if (!(sourceFileBasicInfo.FileAttributes & FILE_ATTRIBUTE_SPARSE_FILE)) {
FILE_SET_SPARSE_BUFFER setDestSparse = { FALSE };
if (!DeviceIoControl(hDestFile, FSCTL_SET_SPARSE, &setDestSparse, sizeof(setDestSparse), nullptr, 0, &junk, nullptr)) {
qDebug() << "Failed to set dest file sparseness" << dst_path.c_str();
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return false;
}
}
sourceFileBasicInfo.CreationTime.QuadPart = 0;
if (!SetFileInformationByHandle(hDestFile, FileBasicInfo, &sourceFileBasicInfo, sizeof(sourceFileBasicInfo))) {
qDebug() << "Failed to set dest file creation time" << dst_path.c_str();
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return false;
}
if (!FlushFileBuffers(hDestFile)) {
qDebug() << "Failed to flush dest file buffer" << dst_path.c_str();
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return false;
}
destFileDispose = { FALSE };
bool result = !!SetFileInformationByHandle(hDestFile, FileDispositionInfo, &destFileDispose, sizeof(destFileDispose));
CloseHandle(hSourceFile);
CloseHandle(hDestFile);
return result;
}
#elif defined(Q_OS_LINUX)
bool linux_ficlone(const std::string& src_path, const std::string& dst_path, std::error_code& ec)
{
// https://man7.org/linux/man-pages/man2/ioctl_ficlone.2.html
int src_fd = open(src_path.c_str(), O_RDONLY);
if (src_fd == -1) {
qDebug() << "Failed to open file:" << src_path.c_str();
qDebug() << "Error:" << strerror(errno);
ec = std::make_error_code(static_cast<std::errc>(errno));
return false;
}
int dst_fd = open(dst_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
if (dst_fd == -1) {
qDebug() << "Failed to open file:" << dst_path.c_str();
qDebug() << "Error:" << strerror(errno);
ec = std::make_error_code(static_cast<std::errc>(errno));
close(src_fd);
return false;
}
// attempt to clone
if (ioctl(dst_fd, FICLONE, src_fd) == -1) {
qDebug() << "Failed to clone file:" << src_path.c_str() << "to" << dst_path.c_str();
qDebug() << "Error:" << strerror(errno);
ec = std::make_error_code(static_cast<std::errc>(errno));
close(src_fd);
close(dst_fd);
return false;
}
if (close(src_fd)) {
qDebug() << "Failed to close file:" << src_path.c_str();
qDebug() << "Error:" << strerror(errno);
}
if (close(dst_fd)) {
qDebug() << "Failed to close file:" << dst_path.c_str();
qDebug() << "Error:" << strerror(errno);
}
return true;
}
#elif defined(Q_OS_MACOS)
bool macos_bsd_clonefile(const std::string& src_path, const std::string& dst_path, std::error_code& ec)
{
// clonefile(const char * src, const char * dst, int flags);
// https://www.manpagez.com/man/2/clonefile/
qDebug() << "attempting file clone via clonefile" << src_path.c_str() << "to" << dst_path.c_str();
if (clonefile(src_path.c_str(), dst_path.c_str(), 0) == -1) {
qDebug() << "Failed to clone file:" << src_path.c_str() << "to" << dst_path.c_str();
qDebug() << "Error:" << strerror(errno);
ec = std::make_error_code(static_cast<std::errc>(errno));
return false;
}
return true;
}
#endif
/**
* @brief if the Filesystem is symlink capable
*
*/
bool canLinkOnFS(const QString& path)
{
FilesystemInfo info = statFS(path);
return canLinkOnFS(info);
}
bool canLinkOnFS(const FilesystemInfo& info)
{
return canLinkOnFS(info.fsType);
}
bool canLinkOnFS(FilesystemType type)
{
return !s_non_link_filesystems.contains(type);
}
/**
* @brief if the Filesystem is symlink capable on both ends
*
*/
bool canLink(const QString& src, const QString& dst)
{
return canLinkOnFS(src) && canLinkOnFS(dst);
}
uintmax_t hardLinkCount(const QString& path)
{
std::error_code err;
int count = fs::hard_link_count(StringUtils::toStdString(path), err);
if (err) {
qWarning() << "Failed to count hard links for" << path << ":" << QString::fromStdString(err.message());
count = 0;
}
return count;
}
#ifdef Q_OS_WIN
// returns 8.3 file format from long path
QString shortPathName(const QString& file)
{
auto input = file.toStdWString();
std::wstring output;
long length = GetShortPathNameW(input.c_str(), NULL, 0);
if (length == 0)
return {};
// NOTE: this resizing might seem weird...
// when GetShortPathNameW fails, it returns length including null character
// when it succeeds, it returns length excluding null character
// See: https://msdn.microsoft.com/en-us/library/windows/desktop/aa364989(v=vs.85).aspx
output.resize(length);
if (GetShortPathNameW(input.c_str(), (LPWSTR)output.c_str(), length) == 0)
return {};
output.resize(length - 1);
QString ret = QString::fromStdWString(output);
return ret;
}
// if the string survives roundtrip through local 8bit encoding...
bool fitsInLocal8bit(const QString& string)
{
return string == QString::fromLocal8Bit(string.toLocal8Bit());
}
QString getPathNameInLocal8bit(const QString& file)
{
if (!fitsInLocal8bit(file)) {
auto path = shortPathName(file);
if (!path.isEmpty()) {
return path;
}
// in case shortPathName fails just return the path as is
}
return file;
}
#endif
QString getUniqueResourceName(const QString& filePath)
{
auto newFileName = filePath;
if (!newFileName.endsWith(".disabled")) {
return newFileName; // prioritize enabled mods
}
newFileName.chop(9);
if (!QFile::exists(newFileName)) {
return filePath;
}
QFileInfo fileInfo(filePath);
auto baseName = fileInfo.completeBaseName();
auto path = fileInfo.absolutePath();
int counter = 1;
do {
if (counter == 1) {
newFileName = FS::PathCombine(path, baseName + ".duplicate");
} else {
newFileName = FS::PathCombine(path, baseName + ".duplicate" + QString::number(counter));
}
counter++;
} while (QFile::exists(newFileName));
return newFileName;
}
} // namespace FS
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