src/m_ipmodem.h

   1 ///
   2 /// \file       m_ipmodem.h
   3 ///             Mode class for GPRS modem mode (using endpoints on
   4 ///             modern devices)
   5 ///
   6
   7 /*
   8     Copyright (C) 2008-2011, Net Direct Inc. (http://www.netdirect.ca/)
   9
  10     This program is free software; you can redistribute it and/or modify
  11     it under the terms of the GNU General Public License as published by
  12     the Free Software Foundation; either version 2 of the License, or
  13     (at your option) any later version.
  14
  15     This program is distributed in the hope that it will be useful,
  16     but WITHOUT ANY WARRANTY; without even the implied warranty of
  17     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  18
  19     See the GNU General Public License in the COPYING file at the
  20     root directory of this project for more details.
  21 */
  22
  23 #ifndef __BARRY_M_IPMODEM_H__
  24 #define __BARRY_M_IPMODEM_H__
  25
  26 #include "dll.h"
  27 #include "modem.h"
  28 #include "usbwrap.h"
  29 #include "data.h"
  30 #include "pppfilter.h"
  31 #include <pthread.h>
  32
  33 #define SB_IPMODEM_SESSION_KEY_LENGTH 8
  34
  35 namespace Barry {
  36
  37 // forward declarations
  38 class Controller;
  39
  40 namespace Mode {
  41
  42 class BXEXPORT IpModem : public Modem
  43 {
  44 public:
  45         typedef void (*DeviceDataCallback)(void *context, const unsigned char *data, int len);
  46
  47 private:
  48         Controller &m_con;
  49         Usb::Device &m_dev;
  50
  51         PppFilter m_filter;                     // used for 0x7e handling
  52
  53         // thread data
  54         volatile bool m_continue_reading;
  55         pthread_t m_modem_read_thread;
  56
  57         // external callbacks
  58         DeviceDataCallback m_callback;
  59         void *m_callback_context;
  60
  61         unsigned char m_session_key[SB_IPMODEM_SESSION_KEY_LENGTH]; // = { 0x00, 0, 0, 0, 0, 0, 0, 0 };
  62
  63 private:
  64         BXLOCAL bool SendPassword(const char *password, uint32_t seed);
  65
  66 protected:
  67         static void *DataReadThread(void *userptr);
  68
  69 public:
  70         IpModem(Controller &con, DeviceDataCallback callback, void *callback_context);
  71         ~IpModem();
  72
  73         //////////////////////////////////
  74         // general operations
  75         void Open(const char *password = 0);
  76         void Close();
  77
  78         //////////////////////////////////
  79         // UsbSerData mode - modem specific
  80
  81 //      void Read(Data &data, int timeout); // can be called from separate thread
  82         void Write(const Data &data, int timeout = -1);
  83 };
  84
  85 }} // namespace Barry::Mode
  86
  87 #endif
  88