Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegames@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 482 insertions, 0 deletions

diff --git a/libkdegames/kgame/kmessageio.cpp b/libkdegames/kgame/kmessageio.cpp
new file mode 100644
index 00000000..f3353277
--- /dev/null
+++ b/libkdegames/kgame/kmessageio.cpp
@@ -0,0 +1,482 @@
+/*
+    This file is part of the KDE games library
+    Copyright (C) 2001 Burkhard Lehner (Burkhard.Lehner@gmx.de)
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License version 2 as published by the Free Software Foundation.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+/*
+     KMessageIO class and subclasses KMessageSocket and KMessageDirect
+*/
+
+#include "kmessageio.h"
+#include <qsocket.h>
+#include <kdebug.h>
+#include <kprocess.h>
+#include <qfile.h>
+
+// ----------------------- KMessageIO -------------------------
+
+KMessageIO::KMessageIO (QObject *parent, const char *name)
+  : QObject (parent, name), m_id (0)
+{}
+
+KMessageIO::~KMessageIO ()
+{}
+
+void KMessageIO::setId (Q_UINT32 id)
+{
+  m_id = id;
+}
+
+Q_UINT32 KMessageIO::id ()
+{
+  return m_id;
+}
+
+// ----------------------KMessageSocket -----------------------
+
+KMessageSocket::KMessageSocket (QString host, Q_UINT16 port, QObject *parent, 
+const char *name)
+  : KMessageIO (parent, name)
+{
+  mSocket = new QSocket ();
+  mSocket->connectToHost (host, port);
+  initSocket ();
+}
+
+KMessageSocket::KMessageSocket (QHostAddress host, Q_UINT16 port, QObject 
+*parent, const char *name)
+  : KMessageIO (parent, name)
+{
+  mSocket = new QSocket ();
+  mSocket->connectToHost (host.toString(), port);
+  initSocket ();
+}
+
+KMessageSocket::KMessageSocket (QSocket *socket, QObject *parent, const char 
+*name)
+  : KMessageIO (parent, name)
+{
+  mSocket = socket;
+  initSocket ();
+}
+
+KMessageSocket::KMessageSocket (int socketFD, QObject *parent, const char 
+*name)
+  : KMessageIO (parent, name)
+{
+  mSocket = new QSocket ();
+  mSocket->setSocket (socketFD);
+  initSocket ();
+}
+
+KMessageSocket::~KMessageSocket ()
+{
+  delete mSocket;
+}
+
+bool KMessageSocket::isConnected () const
+{
+  return mSocket->state() == QSocket::Connection;
+}
+
+void KMessageSocket::send (const QByteArray &msg)
+{
+  QDataStream str (mSocket);
+  str << Q_UINT8 ('M');  // magic number for begin of message
+  str.writeBytes (msg.data(), msg.size());  // writes the length (as Q_UINT32) and the data
+}
+
+void KMessageSocket::processNewData ()
+{
+  if (isRecursive)
+    return;
+  isRecursive = true;
+
+  QDataStream str (mSocket);
+  while (mSocket->bytesAvailable() > 0)
+  {
+    if (mAwaitingHeader)
+    {
+      // Header = magic number + packet length = 5 bytes
+      if (mSocket->bytesAvailable() < 5)
+      {
+        isRecursive = false;
+        return;
+      }
+
+      // Read the magic number first. If something unexpected is found,
+      // start over again, ignoring the data that was read up to then.
+
+      Q_UINT8 v;
+      str >> v;
+      if (v != 'M')
+      {
+        kdWarning(11001) << k_funcinfo << ": Received unexpected data, magic number wrong!" << endl;
+        continue;
+      }
+
+      str >> mNextBlockLength;
+      mAwaitingHeader = false;
+    }
+    else
+    {
+      // Data not completely read => wait for more
+      if (mSocket->bytesAvailable() < (Q_ULONG) mNextBlockLength)
+      {
+        isRecursive = false;
+        return;
+      }
+
+      QByteArray msg (mNextBlockLength);
+      str.readRawBytes (msg.data(), mNextBlockLength);
+
+      // send the received message
+      emit received (msg);
+
+      // Waiting for the header of the next message
+      mAwaitingHeader = true;
+    }
+  }
+
+  isRecursive = false;
+}
+
+void KMessageSocket::initSocket ()
+{
+  connect (mSocket, SIGNAL (error(int)), SIGNAL (connectionBroken()));
+  connect (mSocket, SIGNAL (connectionClosed()), SIGNAL (connectionBroken()));
+  connect (mSocket, SIGNAL (readyRead()), SLOT (processNewData()));
+  mAwaitingHeader = true;
+  mNextBlockLength = 0;
+  isRecursive = false;
+}
+
+Q_UINT16 KMessageSocket::peerPort () const
+{
+  return mSocket->peerPort();
+}
+
+QString KMessageSocket::peerName () const
+{
+  return mSocket->peerName();
+}
+
+// ----------------------KMessageDirect -----------------------
+
+KMessageDirect::KMessageDirect (KMessageDirect *partner, QObject *parent, 
+const char *name)
+  : KMessageIO (parent, name), mPartner (0)
+{
+  // 0 as first parameter leaves the object unconnected
+  if (!partner)
+    return;
+
+  // Check if the other object is already connected
+  if (partner && partner->mPartner)
+  {
+    kdWarning(11001) << k_funcinfo << ": Object is already connected!" << endl;
+    return;
+  }
+
+  // Connect from us to that object
+  mPartner = partner;
+
+  // Connect the other object to us
+  partner->mPartner = this;
+}
+
+KMessageDirect::~KMessageDirect ()
+{
+  if (mPartner)
+  {
+    mPartner->mPartner = 0;
+    emit mPartner->connectionBroken();
+  }
+}
+
+bool KMessageDirect::isConnected () const
+{
+  return mPartner != 0;
+}
+
+void KMessageDirect::send (const QByteArray &msg)
+{
+  if (mPartner)
+    emit mPartner->received (msg);
+  else
+    kdError(11001) << k_funcinfo << ": Not yet connected!" << endl;
+}
+
+
+// ----------------------- KMessageProcess ---------------------------
+
+KMessageProcess::~KMessageProcess()
+{
+  kdDebug(11001) << "@@@KMessageProcess::Delete process" << endl;
+  if (mProcess)
+  {
+    mProcess->kill();
+    delete mProcess;
+    mProcess=0;
+    // Remove not send buffers
+    mQueue.setAutoDelete(true);
+    mQueue.clear();
+    // Maybe todo: delete mSendBuffer
+  }
+}
+KMessageProcess::KMessageProcess(QObject *parent, QString file) : KMessageIO(parent,0)
+{
+  // Start process
+  kdDebug(11001) << "@@@KMessageProcess::Start process" << endl;
+  mProcessName=file;
+  mProcess=new KProcess;
+  int id=0;
+  *mProcess << mProcessName << QString("%1").arg(id);
+  kdDebug(11001) << "@@@KMessageProcess::Init:Id= " << id << endl;
+  kdDebug(11001) << "@@@KMessgeProcess::Init:Processname: " << mProcessName << endl;
+  connect(mProcess, SIGNAL(receivedStdout(KProcess *, char *, int )),
+                        this, SLOT(slotReceivedStdout(KProcess *, char * , int )));
+  connect(mProcess, SIGNAL(receivedStderr(KProcess *, char *, int )),
+                        this, SLOT(slotReceivedStderr(KProcess *, char * , int )));
+  connect(mProcess, SIGNAL(processExited(KProcess *)),
+                        this, SLOT(slotProcessExited(KProcess *)));
+  connect(mProcess, SIGNAL(wroteStdin(KProcess *)),
+                        this, SLOT(slotWroteStdin(KProcess *)));
+  mProcess->start(KProcess::NotifyOnExit,KProcess::All);
+  mSendBuffer=0;
+  mReceiveCount=0;
+  mReceiveBuffer.resize(1024);
+}
+bool KMessageProcess::isConnected() const
+{
+  kdDebug(11001) << "@@@KMessageProcess::Is conencted" << endl;
+  if (!mProcess) return false;
+  return mProcess->isRunning();
+}
+void KMessageProcess::send(const QByteArray &msg)
+{
+  kdDebug(11001) << "@@@KMessageProcess:: SEND("<<msg.size()<<") to process" << endl;
+  unsigned int size=msg.size()+2*sizeof(long);
+
+  char *tmpbuffer=new char[size];
+  long *p1=(long *)tmpbuffer;
+  long *p2=p1+1;
+  kdDebug(11001)  << "p1="<<p1 << "p2="<< p2 << endl;
+  memcpy(tmpbuffer+2*sizeof(long),msg.data(),msg.size());
+  *p1=0x4242aeae;
+  *p2=size;
+  
+  QByteArray *buffer=new QByteArray();
+  buffer->assign(tmpbuffer,size);
+  // buffer->duplicate(msg);
+  mQueue.enqueue(buffer);
+  writeToProcess(); 
+}
+void KMessageProcess::writeToProcess()
+{
+  // Previous send ok and item in queue
+  if (mSendBuffer || mQueue.isEmpty()) return ;
+  mSendBuffer=mQueue.dequeue();
+  if (!mSendBuffer) return ;
+
+  // write it out to the process
+  //  kdDebug(11001) << " @@@@@@ writeToProcess::SEND to process " << mSendBuffer->size() << " BYTE " << endl;
+  //  char *p=mSendBuffer->data();
+  //  for (int i=0;i<16;i++) printf("%02x ",(unsigned char)(*(p+i)));printf("\n");
+  mProcess->writeStdin(mSendBuffer->data(),mSendBuffer->size());
+
+}
+void KMessageProcess::slotWroteStdin(KProcess * )
+{
+  kdDebug(11001) << k_funcinfo << endl;
+  if (mSendBuffer)
+  {
+    delete mSendBuffer;
+    mSendBuffer=0;
+  }
+  writeToProcess();
+}
+
+void KMessageProcess::slotReceivedStderr(KProcess * proc, char *buffer, int buflen)
+{
+  int pid=0;
+  int len;
+  char *p;
+  char *pos;
+//  kdDebug(11001)<<"############# Got stderr " << buflen << " bytes" << endl;
+
+  if (!buffer || buflen==0) return ; 
+  if (proc) pid=proc->pid();
+
+
+  pos=buffer;
+  do
+  {
+    p=(char *)memchr(pos,'\n',buflen);
+    if (!p) len=buflen;
+    else len=p-pos;
+
+    QByteArray a;
+    a.setRawData(pos,len);
+    QString s(a);
+    kdDebug(11001) << "PID" <<pid<< ":" << s << endl;
+    a.resetRawData(pos,len);
+    if (p) pos=p+1;
+    buflen-=len+1;
+  }while(buflen>0);
+}
+
+
+void KMessageProcess::slotReceivedStdout(KProcess * , char *buffer, int buflen)
+{
+  kdDebug(11001) << "$$$$$$ " << k_funcinfo << ": Received " << buflen << " bytes over inter process communication" << endl;
+
+  // TODO Make a plausibility check on buflen to avoid memory overflow
+  while (mReceiveCount+buflen>=mReceiveBuffer.size()) mReceiveBuffer.resize(mReceiveBuffer.size()+1024);
+  memcpy(mReceiveBuffer.data()+mReceiveCount,buffer,buflen);
+  mReceiveCount+=buflen;
+
+  // Possbile message
+  while (mReceiveCount>2*sizeof(long))
+  {
+    long *p1=(long *)mReceiveBuffer.data();
+    long *p2=p1+1;
+    unsigned int len;
+    if (*p1!=0x4242aeae)
+    {
+      kdDebug(11001) << k_funcinfo << ": Cookie error...transmission failure...serious problem..." << endl;
+//      for (int i=0;i<mReceiveCount;i++) fprintf(stderr,"%02x ",mReceiveBuffer[i]);fprintf(stderr,"\n");
+    }
+    len=(int)(*p2);
+    if (len<2*sizeof(long))
+    {
+      kdDebug(11001) << k_funcinfo << ": Message size error" << endl;
+      break;
+    }
+    if (len<=mReceiveCount)
+    {
+      kdDebug(11001) << k_funcinfo << ": Got message with len " << len << endl;
+
+      QByteArray msg;
+    //  msg.setRawData(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
+      msg.duplicate(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
+      emit received(msg);
+     // msg.resetRawData(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
+      // Shift buffer
+      if (len<mReceiveCount)
+      {
+        memmove(mReceiveBuffer.data(),mReceiveBuffer.data()+len,mReceiveCount-len);
+      }
+      mReceiveCount-=len;
+    }
+    else break;
+  }
+}
+
+void KMessageProcess::slotProcessExited(KProcess * /*p*/)
+{
+  kdDebug(11001) << "Process exited (slot)" << endl;
+  emit connectionBroken();
+  delete mProcess;
+  mProcess=0;
+}
+
+
+// ----------------------- KMessageFilePipe ---------------------------
+KMessageFilePipe::KMessageFilePipe(QObject *parent,QFile *readfile,QFile *writefile) : KMessageIO(parent,0)
+{
+  mReadFile=readfile;
+  mWriteFile=writefile;
+  mReceiveCount=0;
+  mReceiveBuffer.resize(1024);
+}
+
+KMessageFilePipe::~KMessageFilePipe()
+{
+}
+
+bool KMessageFilePipe::isConnected () const
+{
+  return (mReadFile!=0)&&(mWriteFile!=0);
+}
+
+void KMessageFilePipe::send(const QByteArray &msg)
+{
+  unsigned int size=msg.size()+2*sizeof(long);
+
+  char *tmpbuffer=new char[size];
+  long *p1=(long *)tmpbuffer;
+  long *p2=p1+1;
+  memcpy(tmpbuffer+2*sizeof(long),msg.data(),msg.size());
+  *p1=0x4242aeae;
+  *p2=size;
+  
+  QByteArray buffer;
+  buffer.assign(tmpbuffer,size);
+  mWriteFile->writeBlock(buffer);
+  mWriteFile->flush();
+  /*
+  fprintf(stderr,"+++ KMessageFilePipe:: SEND(%d to parent) realsize=%d\n",msg.size(),buffer.size());
+  for (int i=0;i<buffer.size();i++) fprintf(stderr,"%02x ",buffer[i]);fprintf(stderr,"\n");
+  fflush(stderr);
+  */
+}
+
+void KMessageFilePipe::exec()
+{
+
+  // According to BL: Blocking read is ok
+  // while(mReadFile->atEnd()) { usleep(100); }
+
+   int ch=mReadFile->getch();
+
+   while (mReceiveCount>=mReceiveBuffer.size()) mReceiveBuffer.resize(mReceiveBuffer.size()+1024);
+   mReceiveBuffer[mReceiveCount]=(char)ch;
+   mReceiveCount++;
+
+   // Change for message 
+   if (mReceiveCount>=2*sizeof(long))
+   {
+     long *p1=(long *)mReceiveBuffer.data();
+     long *p2=p1+1;
+     unsigned int len;
+     if (*p1!=0x4242aeae)
+     {
+       fprintf(stderr,"KMessageFilePipe::exec:: Cookie error...transmission failure...serious problem...\n");
+//       for (int i=0;i<16;i++) fprintf(stderr,"%02x ",mReceiveBuffer[i]);fprintf(stderr,"\n");
+     }
+     len=(int)(*p2);
+     if (len==mReceiveCount)
+     {
+       //fprintf(stderr,"KMessageFilePipe::exec:: Got Message with len %d\n",len);
+
+       QByteArray msg;
+       //msg.setRawData(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
+       msg.duplicate(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
+       emit received(msg);
+       //msg.resetRawData(mReceiveBuffer.data()+2*sizeof(long),len-2*sizeof(long));
+       mReceiveCount=0;
+     }
+   }
+   
+
+   return ;
+
+  
+}
+
+#include "kmessageio.moc"