feat: add assuan direct comm support

1 files changed, 103 insertions, 0 deletions

diff --git a/src/core/function/gpg/GpgAssuanHelper.h b/src/core/function/gpg/GpgAssuanHelper.h
new file mode 100644
index 00000000..65ec325f
--- /dev/null
+++ b/src/core/function/gpg/GpgAssuanHelper.h
@@ -0,0 +1,103 @@
+/**
+ * Copyright (C) 2021-2024 Saturneric <[email protected]>
+ *
+ * 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
+ *
+ */
+
+#pragma once
+
+#include <assuan.h>
+
+#include "core/function/gpg/GpgContext.h"
+
+namespace GpgFrontend {
+
+class GPGFRONTEND_CORE_EXPORT GpgAssuanHelper
+    : public SingletonFunctionObject<GpgAssuanHelper> {
+ public:
+  struct AssuanCallbackContext;
+
+  using DataCallback =
+      std::function<gpg_error_t(QSharedPointer<AssuanCallbackContext>)>;
+  using InqueryCallback =
+      std::function<gpg_error_t(QSharedPointer<AssuanCallbackContext>)>;
+  using StatusCallback =
+      std::function<gpg_error_t(QSharedPointer<AssuanCallbackContext>)>;
+
+  struct AssuanCallbackContext {
+    GpgAssuanHelper* self;
+    GpgComponentType component_type;
+    assuan_context_t ctx;
+
+    QByteArray buffer;
+    QString status;
+    QString inquery;
+
+    DataCallback data_cb;
+    InqueryCallback inquery_cb;
+    StatusCallback status_cb;
+
+    [[nodiscard]] auto SendData(const QByteArray& b) const -> gpg_error_t;
+  };
+
+  explicit GpgAssuanHelper(int channel);
+  ~GpgAssuanHelper();
+
+  auto ConnectToSocket(GpgComponentType) -> bool;
+
+  auto SendCommand(GpgComponentType type, const QString& command,
+                   DataCallback data_cb, InqueryCallback inquery_cb,
+                   StatusCallback status_cb) -> bool;
+
+  auto SendStatusCommand(GpgComponentType type, const QString& command)
+      -> std::tuple<bool, QStringList>;
+
+ private:
+  GpgContext& ctx_ =
+      GpgContext::GetInstance(SingletonFunctionObject::GetChannel());
+  QMap<GpgComponentType, assuan_context_t> assuan_ctx_;
+
+  void launch_component(GpgComponentType type);
+
+  static auto component_type_to_q_string(GpgComponentType type) -> QString;
+
+  static auto simple_data_callback(void* opaque, const void* buffer,
+                                   size_t length) -> gpgme_error_t;
+
+  static auto default_data_callback(void* opaque, const void* buffer,
+                                    size_t length) -> gpgme_error_t;
+
+  static auto default_status_callback(void* opaque,
+                                      const char* status) -> gpgme_error_t;
+
+  static auto default_inquery_callback(void* opaque,
+                                       const char* inquery) -> gpgme_error_t;
+
+  QByteArray temp_data_;
+  QString temp_status_;
+  QString gpgconf_path_;
+};
+
+};  // namespace GpgFrontend
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