1 files changed, 162 insertions, 0 deletions
diff --git a/src/gpg/function/GpgFileOpera.cpp b/src/gpg/function/GpgFileOpera.cpp
new file mode 100644
index 00000000..c3f75cf8
--- /dev/null
+++ b/src/gpg/function/GpgFileOpera.cpp
@@ -0,0 +1,162 @@
+/**
+ * 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.
+ *
+ * Foobar 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 Foobar.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from gpg4usb-team.
+ * Their source code version also complies with GNU General Public License.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]> starting on May 12, 2021.
+ *
+ */
+#include "gpg/function/GpgFileOpera.h"
+
+#include <memory>
+#include <string>
+
+#include "GpgConstants.h"
+#include "gpg/function/BasicOperator.h"
+
+GpgFrontend::GpgError GpgFrontend::GpgFileOpera::EncryptFile(
+    KeyListPtr keys, const std::string& path, GpgEncrResult& result) {
+  std::string in_buffer = read_all_data_in_file(path);
+  std::unique_ptr<std::string> out_buffer;
+
+  auto err = BasicOperator::GetInstance().Encrypt(std::move(keys), in_buffer,
+                                                  out_buffer, result);
+
+  if (check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR)
+    if (!write_buffer_to_file(path + ".asc", *out_buffer)) {
+      throw std::runtime_error("write_buffer_to_file error");
+    };
+  
+  return err;
+}
+
+GpgFrontend::GpgError GpgFrontend::GpgFileOpera::DecryptFile(
+    const std::string& path, GpgDecrResult& result) {
+  std::string in_buffer = read_all_data_in_file(path);
+  std::unique_ptr<std::string> out_buffer;
+
+  auto err =
+      BasicOperator::GetInstance().Decrypt(in_buffer, out_buffer, result);
+
+  assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
+
+  std::string out_file_name = get_only_file_name_with_path(path),
+              file_extension = get_file_extension(path);
+
+  if (!(file_extension == ".asc" || file_extension == ".gpg"))
+    out_file_name += ".out";
+
+  if (check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR)
+    if (!write_buffer_to_file(out_file_name, *out_buffer)) {
+      throw std::runtime_error("write_buffer_to_file error");
+    };
+
+  return err;
+}
+
+gpgme_error_t GpgFrontend::GpgFileOpera::SignFile(KeyListPtr keys,
+                                                  const std::string& path,
+                                                  GpgSignResult& result) {
+  auto in_buffer = read_all_data_in_file(path);
+  std::unique_ptr<std::string> out_buffer;
+
+  auto err = BasicOperator::GetInstance().Sign(
+      std::move(keys), in_buffer, out_buffer, GPGME_SIG_MODE_DETACH, result);
+
+  if (check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR)
+    if (!write_buffer_to_file(path + ".sig", *out_buffer)) {
+      throw std::runtime_error("write_buffer_to_file error");
+    };
+
+  return err;
+}
+
+gpgme_error_t GpgFrontend::GpgFileOpera::VerifyFile(const std::string& path,
+                                                    GpgVerifyResult& result) {
+  auto in_buffer = read_all_data_in_file(path);
+  std::unique_ptr<std::string> sign_buffer = nullptr;
+
+  if (get_file_extension(path) == ".gpg") {
+    auto err =
+        BasicOperator::GetInstance().Verify(in_buffer, sign_buffer, result);
+    assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
+    return err;
+  } else {
+    sign_buffer =
+        std::make_unique<std::string>(read_all_data_in_file(path + ".sig"));
+
+    auto err =
+        BasicOperator::GetInstance().Verify(in_buffer, sign_buffer, result);
+    return err;
+  }
+}
+
+// TODO
+
+gpg_error_t GpgFrontend::GpgFileOpera::EncryptSignFile(
+    KeyListPtr keys, KeyListPtr signer_keys, const std::string& path,
+    GpgEncrResult& encr_res, GpgSignResult& sign_res) {
+  auto in_buffer = read_all_data_in_file(path);
+  std::unique_ptr<std::string> out_buffer = nullptr;
+
+  // TODO dealing with signer keys
+  auto err = BasicOperator::GetInstance().EncryptSign(
+      std::move(keys), std::move(signer_keys), in_buffer, out_buffer, encr_res,
+      sign_res);
+
+  auto out_path = path + ".gpg";
+  LOG(INFO) << "EncryptSignFile out_path" << out_path;
+  LOG(INFO) << "EncryptSignFile out_buffer size" << out_buffer->size();
+
+  if (check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR)
+    if (!write_buffer_to_file(out_path, *out_buffer)) {
+      throw std::runtime_error("write_buffer_to_file error");
+    };
+
+  return err;
+}
+
+gpg_error_t GpgFrontend::GpgFileOpera::DecryptVerifyFile(
+    const std::string& path, GpgDecrResult& decr_res,
+    GpgVerifyResult& verify_res) {
+  LOG(INFO) << "GpgFrontend::GpgFileOpera::DecryptVerifyFile Called";
+
+  auto in_buffer = read_all_data_in_file(path);
+
+  LOG(INFO) << "GpgFrontend::GpgFileOpera::DecryptVerifyFile in_buffer"
+            << in_buffer.size();
+  std::unique_ptr<std::string> out_buffer = nullptr;
+
+  auto err = BasicOperator::GetInstance().DecryptVerify(in_buffer, out_buffer,
+                                                        decr_res, verify_res);
+
+  std::string out_file_name = get_only_file_name_with_path(path),
+              file_extension = get_file_extension(path);
+
+  if (!(file_extension == ".asc" || file_extension == ".gpg"))
+    out_file_name = path + ".out";
+  LOG(INFO) << "GpgFrontend::GpgFileOpera::DecryptVerifyFile out_file_name"
+            << out_file_name;
+
+  if (check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR)
+    if (!write_buffer_to_file(out_file_name, *out_buffer)) {
+      throw std::runtime_error("write_buffer_to_file error");
+    };
+
+  return err;
+}