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/*
* Copyright (c) 2014-2022 Samsung Electronics Co., Ltd. All rights reserved.
*
* This file is licensed under the terms of MIT License or the Apache License
* Version 2.0 of your choice. See the LICENSE.MIT file for MIT license details.
* See the LICENSE file or the notice below for Apache License Version 2.0
* details.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* @file socket-manager.h
* @author Bartlomiej Grzelewski (b.grzelewski@samsung.com)
* @version 1.0
* @brief SocketManager implementation.
*/
#pragma once
#include <vector>
#include <queue>
#include <string>
#include <mutex>
#include <thread>
#include <dpl/exception.h>
namespace SecurityManager {
class Service;
class SocketManager final {
public:
struct ServiceDescription {
std::string serviceHandlerPath; // Path to file
std::string smackLabel; // Smack label for socket
};
struct ConnectionID {
int sock; // Socket file descriptor number.
unsigned counter; // Unique counter per that descriptor number.
};
class Exception {
public:
DECLARE_EXCEPTION_TYPE(SecurityManager::Exception, Base)
DECLARE_EXCEPTION_TYPE(Base, InitFailed)
};
SocketManager();
~SocketManager();
void MainLoop();
void RegisterSocketService(Service &service);
void Close(ConnectionID connectionID);
void Write(ConnectionID connectionID, MessageBuffer &&messageBuffer);
private:
void CreateDomainSocket(const ServiceDescription &desc);
int CreateDomainSocketHelp(const ServiceDescription &desc);
int GetSocketFromSystemD(const ServiceDescription &desc);
void ReadyForRead(int sock);
void ReadyForWrite(int sock);
void ReadyForAccept();
bool GotSigTerm() const;
void ProcessQueue(void);
void NotifyMe(void);
void CloseSocket(int sock);
void RegisterFdForReading(int fd);
struct SocketDescription {
bool isOpen = false;
bool isTimeout = false;
unsigned counter = 0;
time_t timeout = 0;
MessageBuffer buffer;
};
void CreateDefaultReadSocketDescription(int sock);
typedef std::vector<SocketDescription> SocketDescriptionVector;
struct WriteBuffer {
ConnectionID connectionID;
MessageBuffer buffer;
};
struct Timeout {
time_t time;
int sock;
bool operator<(const Timeout &second) const {
return time > second.time; // mininum first!
}
};
SocketDescriptionVector m_socketDescriptionVector;
Service *m_service = nullptr;
fd_set m_readSet;
fd_set m_writeSet;
int m_maxDesc = 0;
int m_signalFd, m_listenSock = -1, m_notifyMe;
std::mutex m_eventQueueMutex;
std::queue<WriteBuffer> m_writeBufferQueue;
std::queue<ConnectionID> m_closeQueue;
std::priority_queue<Timeout> m_timeoutQueue;
};
} // namespace SecurityManager
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