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Viewing changes to src/protocol/internal/fqterm_ssh_channel.h

  • Committer: Bazaar Package Importer
  • Author(s): LI Daobing
  • Date: 2009-02-14 09:32:53 UTC
  • Revision ID: james.westby@ubuntu.com-20090214093253-s2e6544ox2aj79rj
Tags: upstream-0.9.3+svn632
Import upstream version 0.9.3+svn632

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src/protocol/internal/fqterm_ssh_channel.h
 
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/***************************************************************************
 
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 *   fqterm, a terminal emulator for both BBS and *nix.                    *
 
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 *   Copyright (C) 2008 fqterm development group.                          *
 
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 *                                                                         *
 
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 *   This program is free software; you can redistribute it and/or modify  *
 
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 *   it under the terms of the GNU General Public License as published by  *
 
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 *   the Free Software Foundation; either version 2 of the License, or     *
 
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 *   (at your option) any later version.                                   *
 
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 *                                                                         *
 
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 *   This program is distributed in the hope that it will be useful,       *
 
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 
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 *   GNU General Public License for more details.                          *
 
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 *                                                                         *
 
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 *   You should have received a copy of the GNU General Public License     *
 
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 *   along with this program; if not, write to the                         *
 
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 *   Free Software Foundation, Inc.,                                       *
 
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 *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.               *
 
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 ***************************************************************************/
 
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#ifndef FQTERM_SSH_CHANNEL_H
 
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#define FQTERM_SSH_CHANNEL_H
 
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#include "fqterm_ssh_types.h"
 
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#include <QObject>
 
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namespace FQTerm {
 
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class FQTermSSHPacketReceiver;
 
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class FQTermSSHPacketSender;
 
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class FQTermSSHChannel: public QObject {
 
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  Q_OBJECT;
 
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protected:
 
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  bool is_closed_;
 
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  FQTermSSHPacketReceiver *packet_receiver_;
 
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  FQTermSSHPacketSender *packet_sender_;
 
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public:
 
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  FQTermSSHChannel(){}
 
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  virtual ~FQTermSSHChannel(){}
 
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  virtual void initChannel(FQTermSSHPacketReceiver *packet,
 
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                           FQTermSSHPacketSender *output) = 0;
 
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  virtual void closeConnection(char *reason) = 0;
 
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  // TODO: it seems this function isn't used.
 
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  virtual void changeTermSize(int col, int row) = 0;
 
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  virtual void sendData(const char *data, int len) = 0;
 
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public slots:
 
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  virtual void handlePacket(int type) = 0;
 
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signals:
 
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  void channelOK();
 
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  void channelReadyRead(const char *data, int len);
 
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  void channelError(const char *reason);
 
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};
 
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class FQTermSSH1Channel: public FQTermSSHChannel {
 
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  Q_OBJECT;
 
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private:
 
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  enum FQTermSSH1ChannelState {
 
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    BEGIN_SERVICE, REQPTY_SENT, 
 
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    //REQCMD_SENT,
 
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    SERVICE_OK
 
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  }     service_state_;
 
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public:
 
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  FQTermSSH1Channel();
 
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  virtual void initChannel(FQTermSSHPacketReceiver *packet, FQTermSSHPacketSender *output);
 
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  virtual void closeConnection(char *reason);
 
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  virtual void changeTermSize(int col, int row);
 
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  virtual void sendData(const char *data, int len);
 
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public slots:
 
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  virtual void handlePacket(int type);
 
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signals:
 
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  void channelReadyRead(const char *data, int len);
 
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};
 
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class FQTermSSH2Channel: public FQTermSSHChannel {
 
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  Q_OBJECT;
 
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private:
 
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  static u_int32_t generateChannelID();
 
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private:
 
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  enum FQTermSSH2ChannelState {
 
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    BEGIN_CHANNEL, REQUEST_PTY_SENT, REQUEST_SHELL_SENT, CHANNEL_OK
 
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  }     channel_state_;
 
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  u_int32_t channel_id_;
 
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  enum {MAX_LOCAL_WINDOW_SIZE = 0x100000, MAX_LOCAL_PACKET_SIZE = 0x4000};
 
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  u_int32_t local_window_size_;
 
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  u_int32_t server_channel_id_;
 
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  u_int32_t server_window_size_; // connection packet window size;
 
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  u_int32_t server_max_packet_size_; // max size of each packet sent to server.
 
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  void requestPty();
 
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  void requestShell();
 
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  void processChannelPacket();
 
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  void checkLocalWindowSize();
 
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public:
 
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  FQTermSSH2Channel();
 
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  virtual void initChannel(FQTermSSHPacketReceiver *packet, FQTermSSHPacketSender *output);
 
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  virtual void closeConnection(char *reason);
 
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  virtual void changeTermSize(int col, int row);
 
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  virtual void sendData(const char *data, int len);
 
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public slots:
 
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  virtual void handlePacket(int type);
 
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signals:
 
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  void channelReadyRead(const char *data, int len);
 
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};
 
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}  // namespace FQTerm
 
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#endif  // FQTERM_SSH_CHANNEL_H