<refactor>(core, ui): Adjust the core code directory structure.

1 files changed, 130 insertions, 0 deletions

diff --git a/src/core/function/KeyPackageOperator.h b/src/core/function/KeyPackageOperator.h
new file mode 100644
index 00000000..ee81e86e
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+++ b/src/core/function/KeyPackageOperator.h
@@ -0,0 +1,130 @@
+/**
+ * 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
+ *
+ */
+
+#ifndef GPGFRONTEND_KEYPACKAGEOPERATOR_H
+#define GPGFRONTEND_KEYPACKAGEOPERATOR_H
+
+#include "core/GpgFrontendCore.h"
+#include "core/function/gpg/GpgKeyImportExporter.h"
+
+namespace GpgFrontend {
+
+/**
+ * @brief give the possibility to import or export a key package
+ *
+ */
+class KeyPackageOperator {
+public:
+  /**
+   * @brief generate passphrase for key package and save it to file
+   *
+   * @param phrase_path path to passphrase file
+   * @param phrase passphrase generated
+   * @return true if passphrase was generated and saved
+   * @return false if passphrase was not generated and saved
+   */
+  static bool GeneratePassphrase(const std::filesystem::path &phrase_path,
+                                 std::string &phrase);
+
+  /**
+   * @brief generate the name of the key package
+   *
+   * @return std::string name of the key package
+   */
+  static std::string GenerateKeyPackageName();
+
+  /**
+   * @brief generate key package
+   *
+   * @param key_package_path path to key package
+   * @param key_package_name name of the key package
+   * @param key_ids key ids to export
+   * @param phrase passphrase to encrypt key package
+   * @param secret true if secret key should be exported
+   * @return true if key package was generated
+   * @return false if key package was not generated
+   */
+  static bool GenerateKeyPackage(const std::filesystem::path &key_package_path,
+                                 const std::string &key_package_name,
+                                 KeyIdArgsListPtr &key_ids, std::string &phrase,
+                                 bool secret);
+
+  /**
+   * @brief import key package
+   *
+   * @param key_package_path path to key package
+   * @param phrase_path path to passphrase file
+   * @param import_info import info
+   * @return true if key package was imported
+   * @return false if key package was not imported
+   */
+  static bool ImportKeyPackage(const std::filesystem::path &key_package_path,
+                               const std::filesystem::path &phrase_path,
+                               GpgFrontend::GpgImportInformation &import_info);
+
+private:
+  /**
+   * @brief genearte passphrase
+   *
+   * @param len length of the passphrase
+   * @return std::string passphrase
+   */
+  static std::string generate_passphrase(const int len) {
+    std::random_device rd_;         ///< Random device
+    auto mt_ = std::mt19937(rd_()); ///< Mersenne twister
+
+    std::uniform_int_distribution<int> dist(999, 99999);
+    static const char alphanum[] = "0123456789"
+                                   "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                                   "abcdefghijklmnopqrstuvwxyz";
+    std::string tmp_str;
+    tmp_str.reserve(len);
+
+    for (int i = 0; i < len; ++i) {
+      tmp_str += alphanum[dist(mt_) % (sizeof(alphanum) - 1)];
+    }
+    return tmp_str;
+  }
+
+  /**
+   * @brief generate key package name
+   *
+   * @return std::string key package name
+   */
+  static std::string generate_key_package_name() {
+    std::random_device rd_;         ///< Random device
+    auto mt_ = std::mt19937(rd_()); ///< Mersenne twister
+
+    std::uniform_int_distribution<int> dist(999, 99999);
+    auto file_string = boost::format("KeyPackage_%1%") % dist(mt_);
+    return file_string.str();
+  }
+};
+} // namespace GpgFrontend
+
+#endif // GPGFRONTEND_KEYPACKAGEOPERATOR_H