m_ipmodem.h

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00001 ///
00002 /// \file       m_ipmodem.h
00003 ///             Mode class for GPRS modem mode (using endpoints on
00004 ///             modern devices)
00005 ///
00006 
00007 /*
00008     Copyright (C) 2008-2012, Net Direct Inc. (http://www.netdirect.ca/)
00009 
00010     This program is free software; you can redistribute it and/or modify
00011     it under the terms of the GNU General Public License as published by
00012     the Free Software Foundation; either version 2 of the License, or
00013     (at your option) any later version.
00014 
00015     This program is distributed in the hope that it will be useful,
00016     but WITHOUT ANY WARRANTY; without even the implied warranty of
00017     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00018 
00019     See the GNU General Public License in the COPYING file at the
00020     root directory of this project for more details.
00021 */
00022 
00023 #ifndef __BARRY_M_IPMODEM_H__
00024 #define __BARRY_M_IPMODEM_H__
00025 
00026 #include "dll.h"
00027 #include "modem.h"
00028 #include "usbwrap.h"
00029 #include "data.h"
00030 #include "pppfilter.h"
00031 #include <pthread.h>
00032 
00033 #define SB_IPMODEM_SESSION_KEY_LENGTH 8
00034 
00035 namespace Barry {
00036 
00037 // forward declarations
00038 class Controller;
00039 
00040 namespace Mode {
00041 
00042 class BXEXPORT IpModem : public Modem
00043 {
00044 public:
00045         typedef void (*DeviceDataCallback)(void *context, const unsigned char *data, int len);
00046 
00047 private:
00048         Controller &m_con;
00049         Usb::Device &m_dev;
00050 
00051         PppFilter m_filter;                     // used for 0x7e handling
00052 
00053         // thread data
00054         volatile bool m_continue_reading;
00055         pthread_t m_modem_read_thread;
00056 
00057         // external callbacks
00058         DeviceDataCallback m_callback;
00059         void *m_callback_context;
00060 
00061         unsigned char m_session_key[SB_IPMODEM_SESSION_KEY_LENGTH]; // = { 0x00, 0, 0, 0, 0, 0, 0, 0 };
00062 
00063 private:
00064         BXLOCAL bool SendPassword(const char *password, uint32_t seed);
00065 
00066 protected:
00067         static void *DataReadThread(void *userptr);
00068 
00069 public:
00070         IpModem(Controller &con, DeviceDataCallback callback, void *callback_context);
00071         ~IpModem();
00072 
00073         //////////////////////////////////
00074         // general operations
00075         void Open(const char *password = 0);
00076         void Close();
00077 
00078         //////////////////////////////////
00079         // UsbSerData mode - modem specific
00080 
00081 //      void Read(Data &data, int timeout); // can be called from separate thread
00082         void Write(const Data &data, int timeout = -1);
00083 };
00084 
00085 }} // namespace Barry::Mode
00086 
00087 #endif
00088