1 files changed, 119 insertions, 0 deletions
diff --git a/src/core/function/FileOperator.cpp b/src/core/function/FileOperator.cpp
new file mode 100644
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+++ b/src/core/function/FileOperator.cpp
@@ -0,0 +1,119 @@
+/**
+* Copyright (C) 2021 Saturneric
+*
+* 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 "FileOperator.h"
+
+bool GpgFrontend::FileOperator::ReadFile(const QString& file_name,
+                                         QByteArray& data) {
+  QFile file(file_name);
+  if (!file.open(QIODevice::ReadOnly)) {
+    LOG(ERROR) << "failed to open file" << file_name.toStdString();
+    return false;
+  }
+  data = file.readAll();
+  file.close();
+  return true;
+}
+
+bool GpgFrontend::FileOperator::WriteFile(const QString& file_name,
+                                          const QByteArray& data) {
+  QFile file(file_name);
+  if (!file.open(QIODevice::WriteOnly)) {
+    LOG(ERROR) << "failed to open file" << file_name.toStdString();
+    return false;
+  }
+  file.write(data);
+  file.close();
+  return true;
+}
+
+bool GpgFrontend::FileOperator::ReadFileStd(
+    const std::filesystem::path& file_name, std::string& data) {
+  QByteArray byte_data;
+  bool res = ReadFile(QString::fromStdString(file_name.string()), byte_data);
+  data = byte_data.toStdString();
+  return res;
+}
+
+bool GpgFrontend::FileOperator::WriteFileStd(
+    const std::filesystem::path& file_name, const std::string& data) {
+  return WriteFile(QString::fromStdString(file_name.string()),
+                       QByteArray::fromStdString(data));
+}
+
+std::string GpgFrontend::FileOperator::CalculateHash(
+    const std::filesystem::path& file_path) {
+  // Returns empty QByteArray() on failure.
+  QFileInfo info(QString::fromStdString(file_path.string()));
+  std::stringstream ss;
+
+  if (info.isFile() && info.isReadable()) {
+    ss << "[#] " << _("File Hash Information") << std::endl;
+    ss << "    " << _("filename") << _(": ")
+       << file_path.filename().string().c_str() << std::endl;
+
+
+    QFile f(info.filePath());
+    f.open(QFile::ReadOnly);
+    auto buffer = f.readAll();
+    ss << "    " << _("file size(bytes)") << _(": ")
+       << buffer.size() << std::endl;
+    f.close();
+    if (f.open(QFile::ReadOnly)) {
+      auto hash_md5 = QCryptographicHash(QCryptographicHash::Md5);
+      // md5
+      hash_md5.addData(buffer);
+      auto md5 = hash_md5.result().toHex().toStdString();
+      LOG(INFO) << "md5" << md5;
+      ss << "    "
+         << "md5" << _(": ") << md5 << std::endl;
+
+      auto hash_sha1 = QCryptographicHash(QCryptographicHash::Sha1);
+      // sha1
+      hash_sha1.addData(buffer);
+      auto sha1 = hash_sha1.result().toHex().toStdString();
+      LOG(INFO) << "sha1" << sha1;
+      ss << "    "
+         << "sha1" << _(": ") << sha1 << std::endl;
+
+      auto hash_sha256 = QCryptographicHash(QCryptographicHash::Sha256);
+      // sha1
+      hash_sha256.addData(buffer);
+      auto sha256 = hash_sha256.result().toHex().toStdString();
+      LOG(INFO) << "sha256" << sha256;
+      ss << "    "
+         << "sha256" << _(": ") << sha256 << std::endl;
+
+      ss << std::endl;
+    }
+  } else {
+    ss << "[#] " << _("Error in Calculating File Hash ") << std::endl;
+  }
+
+  return ss.str();
+}