src/socket.h

   1 ///
   2 /// \file       socket.h
   3 ///             Class wrapper to encapsulate the Blackberry USB logical socket
   4 ///
   5
   6 /*
   7     Copyright (C) 2005-2009, Net Direct Inc. (http://www.netdirect.ca/)
   8
   9     This program is free software; you can redistribute it and/or modify
  10     it under the terms of the GNU General Public License as published by
  11     the Free Software Foundation; either version 2 of the License, or
  12     (at your option) any later version.
  13
  14     This program is distributed in the hope that it will be useful,
  15     but WITHOUT ANY WARRANTY; without even the implied warranty of
  16     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  17
  18     See the GNU General Public License in the COPYING file at the
  19     root directory of this project for more details.
  20 */
  21
  22 #ifndef __BARRY_SOCKET_H__
  23 #define __BARRY_SOCKET_H__
  24
  25 #include "dll.h"
  26 #include <stdint.h>
  27 #include <queue>
  28 #include <memory>
  29 #include "router.h"
  30
  31 // forward declarations
  32 namespace Usb { class Device; }
  33 namespace Barry {
  34         class Data;
  35         class Packet;
  36         class JLPacket;
  37         class JVMPacket;
  38         class SocketRoutingQueue;
  39 }
  40
  41 namespace Barry {
  42
  43 class Socket;
  44 typedef std::auto_ptr<Socket>   SocketHandle;
  45
  46 class BXEXPORT SocketZero
  47 {
  48         friend class Socket;
  49
  50         Usb::Device *m_dev;
  51         SocketRoutingQueue *m_queue;
  52         int m_writeEp, m_readEp;
  53         uint8_t m_zeroSocketSequence;
  54
  55         uint32_t m_sequenceId;
  56
  57         // half open socket stata, for passwords
  58         bool m_halfOpen;
  59         uint32_t m_challengeSeed;
  60         unsigned int m_remainingTries;
  61
  62         bool m_hideSequencePacket;
  63
  64         bool m_resetOnClose;
  65
  66 private:
  67         static void AppendFragment(Data &whole, const Data &fragment);
  68         static unsigned int MakeNextFragment(const Data &whole, Data &fragment,
  69                 unsigned int offset = 0);
  70         void CheckSequence(uint16_t socket, const Data &seq);
  71
  72         void SendOpen(uint16_t socket, Data &receive);
  73         void SendPasswordHash(uint16_t socket, const char *password, Data &receive);
  74
  75         // Raw send and receive functions, used for all low level
  76         // communication to the USB level.
  77         void RawSend(Data &send, int timeout = -1);
  78         void RawReceive(Data &receive, int timeout = -1);
  79
  80 protected:
  81         bool SequencePacket(const Data &data);
  82         bool IsSequencePacketHidden() { return m_hideSequencePacket; }
  83
  84 public:
  85         void SetResetOnClose(bool flag) { m_resetOnClose = flag; }
  86         void HideSequencePacket(bool flag) { m_hideSequencePacket = flag; }
  87         explicit SocketZero(SocketRoutingQueue &queue, int writeEndpoint,
  88                 uint8_t zeroSocketSequenceStart = 0);
  89         SocketZero(Usb::Device &dev, int writeEndpoint, int readEndpoint,
  90                 uint8_t zeroSocketSequenceStart = 0);
  91         ~SocketZero();
  92
  93         uint8_t GetZeroSocketSequence() const { return m_zeroSocketSequence; }
  94
  95         void SetRoutingQueue(SocketRoutingQueue &queue);
  96         void UnlinkRoutingQueue();
  97
  98         // Send functions for socket 0 only.
  99         // These functions will overwrite:
 100         //     - the zeroSocketSequence byte *inside* the packet
 101         //     - the socket number to 0
 102         //
 103         void Send(Data &send, int timeout = -1);        // send only
 104         void Send(Data &send, Data &receive, int timeout = -1); // send+recv
 105         void Send(Barry::Packet &packet, int timeout = -1);
 106         void Receive(Data &receive, int timeout = -1);
 107
 108         // Opens a new socket and returns a Socket object to manage it
 109         SocketHandle Open(uint16_t socket, const char *password = 0);
 110         void Close(Socket &socket);
 111 };
 112
 113
 114 //
 115 // Socket class
 116 //
 117 /// Encapsulates a "logical socket" in the Blackberry USB protocol.
 118 /// By default, provides raw send/receive access, as well as packet
 119 /// writing on socket 0, which is always open.
 120 ///
 121 /// There are Open and Close members to open data sockets which are used
 122 /// to transfer data to and from the device.
 123 ///
 124 /// The destructor will close any non-0 open sockets automatically.
 125 ///
 126 /// Requires an active Usb::Device object to work on.
 127 ///
 128 class BXEXPORT Socket
 129 {
 130         friend class SocketZero;
 131
 132         SocketZero *m_zero;
 133         uint16_t m_socket;
 134         uint8_t m_closeFlag;
 135
 136         bool m_registered;
 137
 138 protected:
 139         void CheckSequence(const Data &seq);
 140         void ForceClosed();
 141
 142         Socket(SocketZero &zero, uint16_t socket, uint8_t closeFlag);
 143
 144 public:
 145         ~Socket();
 146
 147         uint16_t GetSocket() const { return m_socket; }
 148         uint8_t GetCloseFlag() const { return m_closeFlag; }
 149
 150         void Close();
 151
 152         // Send and Receive are available before Open...
 153         // an unopened socket defaults to socket 0, which you need
 154         // in order to set the blackberry mode
 155         // The send function will overwrite the zeroSocketSequence byte
 156         // *inside* the packet, if the current m_socket is 0.
 157         void Send(Data &send, int timeout = -1);        // send only
 158         void Send(Data &send, Data &receive, int timeout = -1); // send+recv
 159         void Send(Barry::Packet &packet, int timeout = -1);
 160         void Receive(Data &receive, int timeout = -1);
 161         void ReceiveData(Data &receive, int timeout = -1);
 162
 163         // sends the send packet down to the device, fragmenting if
 164         // necessary, and returns the response in receive, defragmenting
 165         // if needed
 166         // Blocks until response received or timed out in Usb::Device
 167         void Packet(Data &send, Data &receive, int timeout = -1);
 168         void Packet(Barry::Packet &packet, int timeout = -1);
 169         void Packet(Barry::JLPacket &packet, int timeout = -1);
 170         void Packet(Barry::JVMPacket &packet, int timeout = -1);
 171
 172         // Use this function to send packet to JVM instead of Packet function
 173         void InitSequence(int timeout = -1);
 174         void PacketJVM(Data &send, Data &receive, int timeout = -1);
 175
 176         // Use this function to send data packet instead of Packet function
 177         // Indeed, Packet function is used to send command (and not data)
 178         void PacketData(Data &send, Data &receive, int timeout = -1);
 179
 180         // some handy wrappers for the Packet() interface
 181         void NextRecord(Data &receive);
 182
 183         // Register a callback for incoming data from the device.
 184         // This function assumes that this socket is based on a socketZero
 185         // that has a SocketRoutingQueue, otherwise throws logic_error.
 186         void RegisterInterest(SocketRoutingQueue::SocketDataHandler handler, void *context);
 187         void UnregisterInterest();
 188
 189
 190         // This function is quickly written
 191         // It's very durty :( (but it's usefull to test...)
 192         void HideSequencePacket(bool flag) { m_zero->HideSequencePacket(flag); }
 193 };
 194
 195
 196 } // namespace Barry
 197
 198 #endif
 199