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/**
* Copyright (C) 2021-2024 Saturneric <[email protected]>
*
* This file is part of GpgFrontend.
*
* GpgFrontend is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GpgFrontend 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 GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from
* the gpg4usb project, which is under GPL-3.0-or-later.
*
* All the source code of GpgFrontend was modified and released by
* Saturneric <[email protected]> starting on May 12, 2021.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include "IOUtils.h"
#include "core/GpgModel.h"
#include "core/utils/FilesystemUtils.h"
namespace GpgFrontend {
auto GetFileChecksum(const QString& file_name,
QCryptographicHash::Algorithm hashAlgorithm)
-> QByteArray {
QFile f(file_name);
if (f.open(QFile::ReadOnly)) {
QCryptographicHash hash(hashAlgorithm);
if (hash.addData(&f)) {
return hash.result();
}
}
return {};
}
auto ReadFile(const QString& file_name, QByteArray& data) -> bool {
QFile file(file_name);
if (!file.open(QIODevice::ReadOnly)) {
LOG_W() << "failed to open file: " << file_name;
return false;
}
data = file.readAll();
file.close();
return true;
}
auto WriteFile(const QString& file_name, const QByteArray& data) -> bool {
QFile file(file_name);
if (!file.open(QIODevice::WriteOnly)) {
LOG_W() << "failed to open file for writing: " << file_name;
return false;
}
file.write(data);
file.close();
return true;
}
auto ReadFileGFBuffer(const QString& file_name) -> std::tuple<bool, GFBuffer> {
QByteArray byte_data;
const bool res = ReadFile(file_name, byte_data);
return {res, GFBuffer(byte_data)};
}
auto WriteFileGFBuffer(const QString& file_name, GFBuffer data) -> bool {
return WriteFile(file_name, data.ConvertToQByteArray());
}
auto CalculateHash(const QString& file_path) -> QString {
// Returns empty QByteArray() on failure.
QFileInfo const info(file_path);
QString buffer;
QTextStream ss(&buffer);
if (info.isFile() && info.isReadable()) {
ss << "# " << QCoreApplication::tr("File Hash Information") << Qt::endl;
ss << "- " << QCoreApplication::tr("Filename") << QCoreApplication::tr(": ")
<< info.fileName() << Qt::endl;
// read all data
ss << "- " << QCoreApplication::tr("File Size") << "(bytes)"
<< QCoreApplication::tr(": ") << QString::number(info.size())
<< Qt::endl;
ss << "- " << QCoreApplication::tr("File Size")
<< QCoreApplication::tr(": ") << GetHumanFriendlyFileSize(info.size())
<< Qt::endl;
// md5
ss << "- " << "MD5" << QCoreApplication::tr(": ")
<< GetFileChecksum(file_path, QCryptographicHash::Md5).toHex()
<< Qt::endl;
// sha1
ss << "- " << "SHA1" << QCoreApplication::tr(": ")
<< GetFileChecksum(file_path, QCryptographicHash::Sha1).toHex()
<< Qt::endl;
// sha1
ss << "- " << "SHA256" << QCoreApplication::tr(": ")
<< GetFileChecksum(file_path, QCryptographicHash::Sha256).toHex()
<< Qt::endl;
ss << Qt::endl;
} else {
ss << "# " << QCoreApplication::tr("Error: cannot read target file")
<< Qt::endl;
ss << "- " << QCoreApplication::tr("Filename") << QCoreApplication::tr(": ")
<< info.fileName() << Qt::endl;
}
return ss.readAll();
}
auto GetTempFilePath() -> QString {
QString const temp_dir = QDir::tempPath();
QString const filename = QUuid::createUuid().toString() + ".data";
return temp_dir + "/" + filename;
}
auto CreateTempFileAndWriteData(const QString& data) -> QString {
auto temp_file = GetTempFilePath();
WriteFile(temp_file, data.toUtf8());
return temp_file;
}
auto CreateTempFileAndWriteData(const GFBuffer& data) -> QString {
auto temp_file = GetTempFilePath();
WriteFile(temp_file, data.ConvertToQByteArray());
return temp_file;
}
auto TargetFilePreCheck(const QString& path,
bool read) -> std::tuple<bool, QString> {
QFileInfo const file_info(path);
if (read) {
if (!file_info.exists()) {
return {false, QCoreApplication::tr("target path doesn't exists")};
}
} else {
QFileInfo const path_info(file_info.absolutePath());
if (!path_info.isWritable()) {
return {false,
QCoreApplication::tr("do NOT have permission to write path")};
}
}
if (read ? !file_info.isReadable() : false) {
return {false,
QCoreApplication::tr("do NOT have permission to read/write file")};
}
return {true, QCoreApplication::tr("Success")};
}
auto GetFullExtension(const QString& path) -> QString {
QString const filename = QFileInfo(path).fileName();
auto const dot_index = filename.indexOf('.');
if (dot_index == -1) return {};
return filename.mid(dot_index);
}
auto CalculateBinaryChacksum(const QString& path) -> QString {
// check file info and access rights
QFileInfo info(path);
if (!info.exists() || !info.isFile() || !info.isReadable()) {
LOG_W() << "get info for file: " << info.filePath()
<< " error, exists: " << info.exists();
return {};
}
// open and read file
QFile f(info.filePath());
if (!f.open(QIODevice::ReadOnly)) {
LOG_W() << "open " << path
<< "to calculate checksum error: " << f.errorString();
return {};
}
QCryptographicHash hash_sha(QCryptographicHash::Sha256);
// read data by chunks
const qint64 buffer_size = 8192; // Define a suitable buffer size
while (!f.atEnd()) {
QByteArray const buffer = f.read(buffer_size);
if (buffer.isEmpty()) {
LOG_W() << "error reading file: " << path
<< " during checksum calculation";
return {};
}
hash_sha.addData(buffer);
}
// close the file
f.close();
// return the SHA-256 hash of the file
return hash_sha.result().toHex();
}
} // namespace GpgFrontend
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