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/**
* Copyright (C) 2021 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
*
*/
#include "Module.h"
#include "core/module/GlobalModuleContext.h"
namespace GpgFrontend::Module {
class Module::Impl {
public:
friend class GlobalModuleContext;
using ExecCallback = std::function<void(int)>;
Impl(ModuleRawPtr m_ptr, ModuleIdentifier id, ModuleVersion version,
ModuleMetaData meta_data)
: m_ptr_(m_ptr),
identifier_(std::move(id)),
version_(std::move(version)),
meta_data_(std::move(meta_data)),
good_(true) {}
Impl(ModuleRawPtr m_ptr, QLibrary& module_library)
: m_ptr_(m_ptr), good_(false) {
for (auto& required_symbol : module_required_symbols_) {
*required_symbol.pointer =
reinterpret_cast<void*>(module_library.resolve(required_symbol.name));
if (*required_symbol.pointer == nullptr) {
GF_CORE_LOG_WARN(
"illegal module: {}, reason: cannot load symbol: {}, abort...",
module_library.fileName(), required_symbol.name);
return;
}
}
SPDLOG_INFO("module loaded, name: {}, verison: {}",
QString::fromUtf8(get_id_api_()),
QString::fromUtf8(get_version_api_()));
identifier_ = QString::fromUtf8(get_id_api_());
version_ = QString::fromUtf8(get_version_api_());
good_ = true;
}
[[nodiscard]] auto IsGood() const -> bool { return good_; }
auto Register() -> int {
if (good_ && register_api_ != nullptr) return register_api_();
return -1;
}
auto Active() -> int {
if (good_ && activate_api_ != nullptr) return activate_api_();
return -1;
}
auto Exec(const EventRefrernce& event) -> int {
if (good_ && execute_api_ != nullptr) {
return execute_api_(event->ToModuleEvent());
}
return -1;
}
auto Deactive() -> int {
if (good_ && deactivate_api_ != nullptr) return deactivate_api_();
return -1;
}
auto UnRegister() -> int {
if (good_ && unregister_api_ != nullptr) return unregister_api_();
return -1;
}
auto GetChannel() -> int { return get_gpc()->GetChannel(m_ptr_); }
auto GetDefaultChannel() -> int {
return GlobalModuleContext::GetDefaultChannel(m_ptr_);
}
auto GetTaskRunner() -> std::optional<TaskRunnerPtr> {
return get_gpc()->GetTaskRunner(m_ptr_);
}
auto ListenEvent(EventIdentifier event) -> bool {
return get_gpc()->ListenEvent(GetModuleIdentifier(), std::move(event));
}
[[nodiscard]] auto GetModuleIdentifier() const -> ModuleIdentifier {
return identifier_;
}
void SetGPC(GlobalModuleContext* gpc) { gpc_ = gpc; }
private:
GlobalModuleContext* gpc_{};
Module* m_ptr_;
ModuleIdentifier identifier_;
ModuleVersion version_;
ModuleMetaData meta_data_;
bool good_;
ModuleAPIGetModuleID get_id_api_;
ModuleAPIGetModuleVersion get_version_api_;
ModuleAPIGetModuleMetaData get_metadata_api_;
ModuleAPIRegisterModule register_api_;
ModuleAPIActivateModule activate_api_;
ModuleAPIExecuteModule execute_api_;
ModuleAPIDeactivateModule deactivate_api_;
ModuleAPIUnregisterModule unregister_api_;
struct Symbol {
const char* name;
void** pointer;
};
QList<Symbol> module_required_symbols_ = {
{"GetModuleID", reinterpret_cast<void**>(&get_id_api_)},
{"GetModuleVersion", reinterpret_cast<void**>(&get_version_api_)},
{"GetModuleMetaData", reinterpret_cast<void**>(&get_metadata_api_)},
{"RegisterModule", reinterpret_cast<void**>(®ister_api_)},
{"ActiveModule", reinterpret_cast<void**>(&activate_api_)},
{"ExecuteModule", reinterpret_cast<void**>(&execute_api_)},
{"DeactiveModule", reinterpret_cast<void**>(&deactivate_api_)},
{"UnregisterModule", reinterpret_cast<void**>(&unregister_api_)},
};
auto get_gpc() -> GlobalModuleContext* {
if (gpc_ == nullptr) {
throw std::runtime_error("module is not registered by module manager");
}
return gpc_;
}
};
Module::Module(ModuleIdentifier id, ModuleVersion version,
const ModuleMetaData& meta_data)
: p_(SecureCreateUniqueObject<Impl>(this, id, version, meta_data)) {}
Module::Module(QLibrary& module_library)
: p_(SecureCreateUniqueObject<Impl>(this, module_library)) {}
Module::~Module() = default;
auto Module::IsGood() -> bool { return p_->IsGood(); }
auto Module::Register() -> int { return p_->Register(); }
auto Module::Active() -> int { return p_->Active(); }
auto Module::Exec(EventRefrernce event) -> int {
return p_->Exec(std::move(event));
}
auto Module::Deactive() -> int { return p_->Deactive(); }
auto Module::UnRegister() -> int { return p_->UnRegister(); }
auto Module::getChannel() -> int { return p_->GetChannel(); }
auto Module::getDefaultChannel() -> int { return p_->GetDefaultChannel(); }
auto Module::getTaskRunner() -> TaskRunnerPtr {
return p_->GetTaskRunner().value_or(nullptr);
}
auto Module::listenEvent(EventIdentifier event) -> bool {
return p_->ListenEvent(std::move(event));
}
auto Module::GetModuleIdentifier() const -> ModuleIdentifier {
return p_->GetModuleIdentifier();
}
void Module::SetGPC(GlobalModuleContext* gpc) { p_->SetGPC(gpc); }
} // namespace GpgFrontend::Module
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