<refactor, test>(core, test): core improved and test gpg alone mode

1. let modules known their channels.
2. let factory create a channel.
3. reduce dumplicate code.
4. add type check for function object.
5. test gpg alone mode.
6. remove some asserts.
7. rename importexportor to importexporter.
8. move args in gpg context constructor to a struct.

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;
+}