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483 lines
13 KiB
483 lines
13 KiB
/*
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This file is part of the KDE games library
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Copyright (C) 2001 Burkhard Lehner (Burkhard.Lehner@gmx.de)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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/*
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KMessageIO class and subclasses KMessageSocket and KMessageDirect
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*/
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#include "kmessageio.h"
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#include <tqsocket.h>
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#include <kdebug.h>
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#include <kprocess.h>
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#include <tqfile.h>
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// ----------------------- KMessageIO -------------------------
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KMessageIO::KMessageIO (TQObject *parent, const char *name)
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: TQObject (parent, name), m_id (0)
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{}
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KMessageIO::~KMessageIO ()
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{}
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void KMessageIO::setId (TQ_UINT32 id)
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{
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m_id = id;
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}
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TQ_UINT32 KMessageIO::id ()
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{
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return m_id;
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}
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// ----------------------KMessageSocket -----------------------
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KMessageSocket::KMessageSocket (TQString host, TQ_UINT16 port, TQObject *parent,
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const char *name)
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: KMessageIO (parent, name)
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{
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mSocket = new TQSocket ();
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mSocket->connectToHost (host, port);
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initSocket ();
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}
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KMessageSocket::KMessageSocket (TQHostAddress host, TQ_UINT16 port, TQObject
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*parent, const char *name)
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: KMessageIO (parent, name)
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{
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mSocket = new TQSocket ();
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mSocket->connectToHost (host.toString(), port);
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initSocket ();
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}
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KMessageSocket::KMessageSocket (TQSocket *socket, TQObject *parent, const char
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*name)
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: KMessageIO (parent, name)
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{
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mSocket = socket;
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initSocket ();
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}
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KMessageSocket::KMessageSocket (int socketFD, TQObject *parent, const char
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*name)
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: KMessageIO (parent, name)
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{
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mSocket = new TQSocket ();
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mSocket->setSocket (socketFD);
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initSocket ();
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}
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KMessageSocket::~KMessageSocket ()
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{
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delete mSocket;
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}
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bool KMessageSocket::isConnected () const
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{
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return mSocket->state() == TQSocket::Connection;
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}
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void KMessageSocket::send (const TQByteArray &msg)
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{
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TQDataStream str (mSocket);
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str << TQ_UINT8 ('M'); // magic number for begin of message
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str.writeBytes (msg.data(), msg.size()); // writes the length (as TQ_UINT32) and the data
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}
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void KMessageSocket::processNewData ()
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{
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if (isRecursive)
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return;
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isRecursive = true;
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TQDataStream str (mSocket);
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while (mSocket->bytesAvailable() > 0)
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{
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if (mAwaitingHeader)
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{
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// Header = magic number + packet length = 5 bytes
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if (mSocket->bytesAvailable() < 5)
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{
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isRecursive = false;
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return;
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}
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// Read the magic number first. If something unexpected is found,
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// start over again, ignoring the data that was read up to then.
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TQ_UINT8 v;
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str >> v;
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if (v != 'M')
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{
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kdWarning(11001) << k_funcinfo << ": Received unexpected data, magic number wrong!" << endl;
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continue;
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}
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str >> mNextBlockLength;
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mAwaitingHeader = false;
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}
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else
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{
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// Data not completely read => wait for more
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if (mSocket->bytesAvailable() < (TQ_ULONG) mNextBlockLength)
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{
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isRecursive = false;
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return;
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}
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TQByteArray msg (mNextBlockLength);
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str.readRawBytes (msg.data(), mNextBlockLength);
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// send the received message
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emit received (msg);
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// Waiting for the header of the next message
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mAwaitingHeader = true;
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}
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}
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isRecursive = false;
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}
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void KMessageSocket::initSocket ()
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{
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connect (mSocket, TQT_SIGNAL (error(int)), TQT_SIGNAL (connectionBroken()));
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connect (mSocket, TQT_SIGNAL (connectionClosed()), TQT_SIGNAL (connectionBroken()));
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connect (mSocket, TQT_SIGNAL (readyRead()), TQT_SLOT (processNewData()));
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mAwaitingHeader = true;
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mNextBlockLength = 0;
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isRecursive = false;
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}
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TQ_UINT16 KMessageSocket::peerPort () const
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{
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return mSocket->peerPort();
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}
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TQString KMessageSocket::peerName () const
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{
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return mSocket->peerName();
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}
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// ----------------------KMessageDirect -----------------------
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KMessageDirect::KMessageDirect (KMessageDirect *partner, TQObject *parent,
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const char *name)
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: KMessageIO (parent, name), mPartner (0)
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{
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// 0 as first parameter leaves the object unconnected
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if (!partner)
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return;
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// Check if the other object is already connected
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if (partner && partner->mPartner)
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{
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kdWarning(11001) << k_funcinfo << ": Object is already connected!" << endl;
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return;
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}
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// Connect from us to that object
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mPartner = partner;
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// Connect the other object to us
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partner->mPartner = this;
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}
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KMessageDirect::~KMessageDirect ()
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{
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if (mPartner)
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{
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mPartner->mPartner = 0;
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emit mPartner->connectionBroken();
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}
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}
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bool KMessageDirect::isConnected () const
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{
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return mPartner != 0;
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}
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void KMessageDirect::send (const TQByteArray &msg)
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{
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if (mPartner)
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emit mPartner->received (msg);
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else
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kdError(11001) << k_funcinfo << ": Not yet connected!" << endl;
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}
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// ----------------------- KMessageProcess ---------------------------
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KMessageProcess::~KMessageProcess()
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{
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kdDebug(11001) << "@@@KMessageProcess::Delete process" << endl;
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if (mProcess)
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{
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mProcess->kill();
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delete mProcess;
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mProcess=0;
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// Remove not send buffers
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mQueue.setAutoDelete(true);
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mQueue.clear();
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// Maybe todo: delete mSendBuffer
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}
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}
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KMessageProcess::KMessageProcess(TQObject *parent, TQString file) : KMessageIO(parent,0)
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{
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// Start process
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kdDebug(11001) << "@@@KMessageProcess::Start process" << endl;
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mProcessName=file;
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mProcess=new KProcess;
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int id=0;
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*mProcess << mProcessName << TQString("%1").arg(id);
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kdDebug(11001) << "@@@KMessageProcess::Init:Id= " << id << endl;
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kdDebug(11001) << "@@@KMessgeProcess::Init:Processname: " << mProcessName << endl;
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connect(mProcess, TQT_SIGNAL(receivedStdout(KProcess *, char *, int )),
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this, TQT_SLOT(slotReceivedStdout(KProcess *, char * , int )));
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connect(mProcess, TQT_SIGNAL(receivedStderr(KProcess *, char *, int )),
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this, TQT_SLOT(slotReceivedStderr(KProcess *, char * , int )));
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connect(mProcess, TQT_SIGNAL(processExited(KProcess *)),
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this, TQT_SLOT(slotProcessExited(KProcess *)));
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connect(mProcess, TQT_SIGNAL(wroteStdin(KProcess *)),
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this, TQT_SLOT(slotWroteStdin(KProcess *)));
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mProcess->start(KProcess::NotifyOnExit,KProcess::All);
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mSendBuffer=0;
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mReceiveCount=0;
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mReceiveBuffer.resize(1024);
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}
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bool KMessageProcess::isConnected() const
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{
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kdDebug(11001) << "@@@KMessageProcess::Is conencted" << endl;
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if (!mProcess) return false;
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return mProcess->isRunning();
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}
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void KMessageProcess::send(const TQByteArray &msg)
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{
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kdDebug(11001) << "@@@KMessageProcess:: SEND("<<msg.size()<<") to process" << endl;
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unsigned int size=msg.size()+2*sizeof(long);
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char *tmpbuffer=new char[size];
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long *p1=(long *)tmpbuffer;
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long *p2=p1+1;
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kdDebug(11001) << "p1="<<p1 << "p2="<< p2 << endl;
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memcpy(tmpbuffer+2*sizeof(long),msg.data(),msg.size());
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*p1=0x4242aeae;
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*p2=size;
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TQByteArray *buffer=new TQByteArray();
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buffer->assign(tmpbuffer,size);
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// buffer->duplicate(msg);
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mQueue.enqueue(buffer);
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writeToProcess();
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}
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void KMessageProcess::writeToProcess()
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{
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// Previous send ok and item in queue
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if (mSendBuffer || mQueue.isEmpty()) return ;
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mSendBuffer=mQueue.dequeue();
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if (!mSendBuffer) return ;
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// write it out to the process
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// kdDebug(11001) << " @@@@@@ writeToProcess::SEND to process " << mSendBuffer->size() << " BYTE " << endl;
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// char *p=mSendBuffer->data();
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// for (int i=0;i<16;i++) printf("%02x ",(unsigned char)(*(p+i)));printf("\n");
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mProcess->writeStdin(mSendBuffer->data(),mSendBuffer->size());
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}
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void KMessageProcess::slotWroteStdin(KProcess * )
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{
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kdDebug(11001) << k_funcinfo << endl;
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if (mSendBuffer)
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{
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delete mSendBuffer;
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mSendBuffer=0;
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}
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writeToProcess();
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}
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void KMessageProcess::slotReceivedStderr(KProcess * proc, char *buffer, int buflen)
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{
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int pid=0;
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int len;
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char *p;
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char *pos;
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// kdDebug(11001)<<"############# Got stderr " << buflen << " bytes" << endl;
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if (!buffer || buflen==0) return ;
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if (proc) pid=proc->pid();
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pos=buffer;
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do
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{
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p=(char *)memchr(pos,'\n',buflen);
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if (!p) len=buflen;
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else len=p-pos;
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TQByteArray a;
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a.setRawData(pos,len);
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TQString s(a);
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kdDebug(11001) << "PID" <<pid<< ":" << s << endl;
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a.resetRawData(pos,len);
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if (p) pos=p+1;
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buflen-=len+1;
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}while(buflen>0);
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}
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void KMessageProcess::slotReceivedStdout(KProcess * , char *buffer, int buflen)
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{
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kdDebug(11001) << "$$$$$$ " << k_funcinfo << ": Received " << buflen << " bytes over inter process communication" << endl;
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// TODO Make a plausibility check on buflen to avoid memory overflow
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while (mReceiveCount+buflen>=mReceiveBuffer.size()) mReceiveBuffer.resize(mReceiveBuffer.size()+1024);
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memcpy(mReceiveBuffer.data()+mReceiveCount,buffer,buflen);
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mReceiveCount+=buflen;
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// Possbile message
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while (mReceiveCount>2*sizeof(long))
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{
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long *p1=(long *)mReceiveBuffer.data();
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long *p2=p1+1;
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unsigned int len;
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if (*p1!=0x4242aeae)
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{
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kdDebug(11001) << k_funcinfo << ": Cookie error...transmission failure...serious problem..." << endl;
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// for (int i=0;i<mReceiveCount;i++) fprintf(stderr,"%02x ",mReceiveBuffer[i]);fprintf(stderr,"\n");
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}
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len=(int)(*p2);
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if (len<2*sizeof(long))
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{
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kdDebug(11001) << k_funcinfo << ": Message size error" << endl;
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break;
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}
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if (len<=mReceiveCount)
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{
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kdDebug(11001) << k_funcinfo << ": Got message with len " << len << endl;
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TQByteArray msg;
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// msg.setRawData(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
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msg.duplicate(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
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emit received(msg);
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// msg.resetRawData(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
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// Shift buffer
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if (len<mReceiveCount)
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{
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memmove(mReceiveBuffer.data(),mReceiveBuffer.data()+len,mReceiveCount-len);
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}
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mReceiveCount-=len;
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}
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else break;
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}
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}
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void KMessageProcess::slotProcessExited(KProcess * /*p*/)
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{
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kdDebug(11001) << "Process exited (slot)" << endl;
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emit connectionBroken();
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delete mProcess;
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mProcess=0;
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}
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// ----------------------- KMessageFilePipe ---------------------------
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KMessageFilePipe::KMessageFilePipe(TQObject *parent,TQFile *readfile,TQFile *writefile) : KMessageIO(parent,0)
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{
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mReadFile=readfile;
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mWriteFile=writefile;
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mReceiveCount=0;
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mReceiveBuffer.resize(1024);
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}
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KMessageFilePipe::~KMessageFilePipe()
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{
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}
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bool KMessageFilePipe::isConnected () const
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{
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return (mReadFile!=0)&&(mWriteFile!=0);
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}
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void KMessageFilePipe::send(const TQByteArray &msg)
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{
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unsigned int size=msg.size()+2*sizeof(long);
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char *tmpbuffer=new char[size];
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long *p1=(long *)tmpbuffer;
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long *p2=p1+1;
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memcpy(tmpbuffer+2*sizeof(long),msg.data(),msg.size());
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*p1=0x4242aeae;
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*p2=size;
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TQByteArray buffer;
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buffer.assign(tmpbuffer,size);
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mWriteFile->writeBlock(buffer);
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mWriteFile->flush();
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/*
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fprintf(stderr,"+++ KMessageFilePipe:: SEND(%d to parent) realsize=%d\n",msg.size(),buffer.size());
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for (int i=0;i<buffer.size();i++) fprintf(stderr,"%02x ",buffer[i]);fprintf(stderr,"\n");
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fflush(stderr);
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*/
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}
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void KMessageFilePipe::exec()
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{
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// According to BL: Blocking read is ok
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// while(mReadFile->atEnd()) { usleep(100); }
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int ch=mReadFile->getch();
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while (mReceiveCount>=mReceiveBuffer.size()) mReceiveBuffer.resize(mReceiveBuffer.size()+1024);
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mReceiveBuffer[mReceiveCount]=(char)ch;
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mReceiveCount++;
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// Change for message
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if (mReceiveCount>=2*sizeof(long))
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{
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long *p1=(long *)mReceiveBuffer.data();
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long *p2=p1+1;
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unsigned int len;
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if (*p1!=0x4242aeae)
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{
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fprintf(stderr,"KMessageFilePipe::exec:: Cookie error...transmission failure...serious problem...\n");
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// for (int i=0;i<16;i++) fprintf(stderr,"%02x ",mReceiveBuffer[i]);fprintf(stderr,"\n");
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}
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len=(int)(*p2);
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if (len==mReceiveCount)
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{
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//fprintf(stderr,"KMessageFilePipe::exec:: Got Message with len %d\n",len);
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TQByteArray msg;
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//msg.setRawData(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
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msg.duplicate(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
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emit received(msg);
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//msg.resetRawData(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
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mReceiveCount=0;
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}
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}
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return ;
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}
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#include "kmessageio.moc"
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