pyconnect/PyConnectObjComm.h at master · uts-magic-lab/pyconnect · GitHub

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/*
 *  PyConnectObjComm.h
 *
 *  Copyright 2006, 2007 Xun Wang.
 *  This file is part of PyConnect.
 *
 *  PyConnect 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.
 *
 *  PyConnect 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef PyConnectObjComm_h_DEFINED
#define PyConnectObjComm_h_DEFINED

#ifdef OPENR_OBJECT
#include <OPENR/OObject.h>
#include <OPENR/OObserver.h>
#include <OPENR/OSubject.h>
#endif

#ifdef WIN32
#include <winsock2.h>
#define SOCKET_T SOCKET
#else
#define SOCKET_T int
#define INVALID_SOCKET -1
#include <netinet/in.h>
#endif

#include "PyConnectCommon.h"
#include <map>
#include <vector>

namespace pyconnect {

class ObjectComm;

typedef enum {
  NOT_SUPPORTED = 1,
  INVALID_ADDR_PORT = 2,
  COMM_FAILED = 4,
  COMM_SUCCESS = 8
} CommObjectStat;

typedef enum {
  MESG_PROCESSED_OK = 0,
  MESG_PROCESSED_FAILED = 1,
  MESG_TO_SHUTDOWN = 2
} MesgProcessResult;

class MessageProcessor {
public:
  MessageProcessor() {}
  virtual ~MessageProcessor();
  virtual MesgProcessResult processInput(unsigned char *recData,
                                         int bytesReceived,
                                         struct sockaddr_in &cAddr,
                                         bool skipdecrypt = false) = 0;
  void addCommObject(ObjectComm *pCommObj);
  virtual void updateMPID(int id) {}

protected:
  typedef std::vector<ObjectComm *> CommObjectList;
  CommObjectList commObjList_;

  void dispatchMessage(const unsigned char *data, int size,
                       bool broadcast = false);
  CommObjectStat connectTo(char *host, int port = 0);
  CommObjectStat setBroadcastAddr(char *addr);
};

class ObjectComm {
public:
  ObjectComm();
  virtual ~ObjectComm() {}
  virtual void dataPacketSender(const unsigned char *data, int size,
                                bool broadcast = false) = 0;
  virtual CommObjectStat setBroadcastAddr(char *addr) { return NOT_SUPPORTED; }
  virtual CommObjectStat createTalker(char *host, int port = 0) {
    return NOT_SUPPORTED;
  }
  virtual void fini() {}

protected:
  MessageProcessor *pMP_;

  void setMP(MessageProcessor *pMP) { pMP_ = pMP; }
  int verifyNegotiationMsg(const unsigned char *recBuffer, int receivedBytes);
  SOCKET_T findOrAddCommChanByMsgID(const unsigned char *data);
  SOCKET_T getLastUsedCommChannel();
  void resetLastUsedCommChannel() { activeCommChannel_ = INVALID_SOCKET; }
  void setLastUsedCommChannel(SOCKET_T index);
  void resetObjCommChanMap();
  void objCommChannelShutdown(SOCKET_T chanID, bool notifyMesgProc = false);

private:
  typedef std::map<int, SOCKET_T>
      ObjectCommChannelMap; // < remote host object (module or server) ID ,
                            // channel index/socket >

  ObjectCommChannelMap objCommMap_;
  SOCKET_T activeCommChannel_;
};

} // namespace pyconnect

#endif // PyConnectObjComm_h_DEFINED