1 files changed, 160 insertions, 0 deletions
diff --git a/src/gpg/function/GpgKeyImportExporter.cpp b/src/gpg/function/GpgKeyImportExporter.cpp
new file mode 100644
index 00000000..ca9b86d1
--- /dev/null
+++ b/src/gpg/function/GpgKeyImportExporter.cpp
@@ -0,0 +1,160 @@
+/**
+ * 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/GpgKeyImportExporter.h"
+
+#include "GpgConstants.h"
+
+/**
+ * Import key pair
+ * @param inBuffer input byte array
+ * @return Import information
+ */
+GpgFrontend::GpgImportInformation GpgFrontend::GpgKeyImportExporter::ImportKey(
+    StdBypeArrayPtr in_buffer) {
+  if (in_buffer->empty()) return {};
+
+  GpgData data_in(in_buffer->data(), in_buffer->size());
+  auto err = check_gpg_error(gpgme_op_import(ctx, data_in));
+  if (gpgme_err_code(err) != GPG_ERR_NO_ERROR) return {};
+
+  gpgme_import_result_t result;
+  result = gpgme_op_import_result(ctx);
+  gpgme_import_status_t status = result->imports;
+  auto import_info = std::make_unique<GpgImportInformation>(result);
+  while (status != nullptr) {
+    GpgImportedKey key;
+    key.import_status = static_cast<int>(status->status);
+    key.fpr = status->fpr;
+    import_info->importedKeys.emplace_back(key);
+    status = status->next;
+  }
+
+  return *import_info;
+}
+
+/**
+ * Export Key
+ * @param uid_list key ids
+ * @param out_buffer output byte array
+ * @return if success
+ */
+bool GpgFrontend::GpgKeyImportExporter::ExportKeys(
+    KeyIdArgsListPtr& uid_list, ByteArrayPtr& out_buffer) const {
+  if (uid_list->empty()) return false;
+
+  // Alleviate another crash problem caused by an unknown array out-of-bounds
+  // access
+  auto all_success = true;
+  for (size_t i = 0; i < uid_list->size(); i++) {
+    GpgData data_out;
+    auto err = gpgme_op_export(ctx, (*uid_list)[i].c_str(), 0, data_out);
+    if (gpgme_err_code(err) != GPG_ERR_NO_ERROR) all_success = false;
+    DLOG(INFO) << "exportKeys read_bytes"
+               << gpgme_data_seek(data_out, 0, SEEK_END);
+
+    auto temp_out_buffer = data_out.Read2Buffer();
+    std::swap(out_buffer, temp_out_buffer);
+  }
+
+  return all_success;
+}
+
+/**
+ * Export keys
+ * @param keys keys used
+ * @param outBuffer output byte array
+ * @return if success
+ */
+bool GpgFrontend::GpgKeyImportExporter::ExportKeys(
+    const KeyArgsList& keys, ByteArrayPtr& out_buffer) const {
+  KeyIdArgsListPtr key_ids = std::make_unique<std::vector<std::string>>();
+  for (const auto& key : keys) key_ids->push_back(key.id());
+  return ExportKeys(key_ids, out_buffer);
+}
+
+/**
+ * Export the secret key of a key pair(including subkeys)
+ * @param key target key pair
+ * @param outBuffer output byte array
+ * @return if successful
+ */
+bool GpgFrontend::GpgKeyImportExporter::ExportSecretKey(
+    const GpgKey& key, ByteArrayPtr& out_buffer) const {
+  DLOG(INFO) << "Export Secret Key" << key.id().c_str();
+
+  gpgme_key_t target_key[2] = {gpgme_key_t(key), nullptr};
+
+  GpgData data_out;
+  // export private key to outBuffer
+  gpgme_error_t err =
+      gpgme_op_export_keys(ctx, target_key, GPGME_EXPORT_MODE_SECRET, data_out);
+
+  auto temp_out_buffer = data_out.Read2Buffer();
+  std::swap(out_buffer, temp_out_buffer);
+
+  return check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR;
+}
+
+bool GpgFrontend::GpgKeyImportExporter::ExportKey(
+    const GpgFrontend::GpgKey& key,
+    GpgFrontend::ByteArrayPtr& out_buffer) const {
+  GpgData data_out;
+  auto err = gpgme_op_export(ctx, key.id().c_str(), 0, data_out);
+
+  DLOG(INFO) << "exportKeys read_bytes"
+             << gpgme_data_seek(data_out, 0, SEEK_END);
+
+  auto temp_out_buffer = data_out.Read2Buffer();
+  std::swap(out_buffer, temp_out_buffer);
+  return check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR;
+}
+
+bool GpgFrontend::GpgKeyImportExporter::ExportKeyOpenSSH(
+    const GpgFrontend::GpgKey& key,
+    GpgFrontend::ByteArrayPtr& out_buffer) const {
+  GpgData data_out;
+  auto err =
+      gpgme_op_export(ctx, key.id().c_str(), GPGME_EXPORT_MODE_SSH, data_out);
+
+  DLOG(INFO) << "read_bytes" << gpgme_data_seek(data_out, 0, SEEK_END);
+
+  auto temp_out_buffer = data_out.Read2Buffer();
+  std::swap(out_buffer, temp_out_buffer);
+  return check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR;
+}
+
+bool GpgFrontend::GpgKeyImportExporter::ExportSecretKeyShortest(
+    const GpgFrontend::GpgKey& key,
+    GpgFrontend::ByteArrayPtr& out_buffer) const {
+  GpgData data_out;
+  auto err = gpgme_op_export(ctx, key.id().c_str(), GPGME_EXPORT_MODE_MINIMAL,
+                             data_out);
+
+  DLOG(INFO) << "read_bytes" << gpgme_data_seek(data_out, 0, SEEK_END);
+
+  auto temp_out_buffer = data_out.Read2Buffer();
+  std::swap(out_buffer, temp_out_buffer);
+  return check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR;
+}