Added 4 opie files. Updated pro file.

7 files changed, 2138 insertions, 0 deletions

diff --git a/microkde/kapplication.cpp b/microkde/kapplication.cpp
index a1d00a8..77ceac5 100644
--- a/microkde/kapplication.cpp
+++ b/microkde/kapplication.cpp
@@ -3,24 +3,29 @@
 #include "kapplication.h"
 
 int KApplication::random()
 {
   return rand();
 }
 
 //US
 QString KApplication::randomString(int length)
 {
    if (length <=0 ) return QString::null;
 
    QString str;
    while (length--)
    {
       int r=random() % 62;
       r+=48;
       if (r>57) r+=7;
       if (r>90) r+=6;
       str += char(r);
       // so what if I work backwards?
    }
    return str;
 }
+ int KApplication::execDialog( QDialog* d )
+{
+    d->showMaximized();
+    return d->exec();
+}
diff --git a/microkde/kapplication.h b/microkde/kapplication.h
index 47e64e7..77206f5 100644
--- a/microkde/kapplication.h
+++ b/microkde/kapplication.h
@@ -1,21 +1,23 @@
 #ifndef MINIKDE_KAPPLICATION_H
 #define MINIKDE_KAPPLICATION_H
 
 #include "qstring.h"
+#include <qdialog.h>
 
 class KApplication
 {
   public:
     static int random();
 
 //US
   /**
    * Generates a random string.  It operates in the range [A-Za-z0-9]
    * @param length Generate a string of this length.
    * @return the random string
    */
   static QString randomString(int length);
+  static int execDialog( QDialog* ); 
 };
 
 
 #endif
diff --git a/microkde/microkdeE.pro b/microkde/microkdeE.pro
index 8d04123..4ee4dd7 100644
--- a/microkde/microkdeE.pro
+++ b/microkde/microkdeE.pro
@@ -34,48 +34,51 @@ KDGanttMinimizeSplitter.h \
  keditlistbox.h \
  kemailsettings.h \
  kfiledialog.h \
  kfontdialog.h \
  kglobal.h \
  kglobalsettings.h \
  kiconloader.h \
  klineedit.h \
  klineeditdlg.h \
  kmessagebox.h \
  knotifyclient.h \
  kprinter.h \
  kprocess.h \
  krestrictedline.h \
  krun.h \
  ksimpleconfig.h \
  kstaticdeleter.h \
  ksystemtray.h \
  ktempfile.h \
  ktextedit.h \
  kunload.h \
  kurl.h \
  ofileselector_p.h \
  ofontselector.h \
+oprocctrl.h \   
+oprocess.h \   
+osmartpointer.h \   
  kdeui/kguiitem.h \
  kdeui/kaction.h \
  kdeui/kactionclasses.h \
  kdeui/kactioncollection.h \
  kdeui/kcmodule.h \
  kdeui/kstdaction.h \
  kdeui/kbuttonbox.h \
  kdeui/klistbox.h \
  kdeui/klistview.h \
  kdeui/kjanuswidget.h \
  kdeui/kseparator.h \
  kdeui/kmainwindow.h \
  kdeui/knuminput.h \
  kdeui/knumvalidator.h \
  kdeui/ksqueezedtextlabel.h \
  kdeui/ktoolbar.h \
  kdeui/ktoolbarbutton.h \
  kdeui/ktoolbarhandler.h \
  kdeui/kxmlguiclient.h \
  kio/job.h \
  kio/kfile/kurlrequester.h \
  kresources/resource.h \
  kresources/factory.h \
  kresources/managerimpl.h \
@@ -106,48 +109,50 @@ KDGanttMinimizeSplitter.cpp \
  kcalendarsystem.cpp \
  kcalendarsystemgregorian.cpp \
  kcolorbutton.cpp \
  kcolordialog.cpp \
  kconfig.cpp \
  kdatetbl.cpp \
  kdialog.cpp \
  kdialogbase.cpp \
  keditlistbox.cpp \
  kemailsettings.cpp \
  kfontdialog.cpp \
  kfiledialog.cpp \
  kglobal.cpp \
  kglobalsettings.cpp \
  kiconloader.cpp \
  kmessagebox.cpp \
  kprocess.cpp \
  krun.cpp \
  ksystemtray.cpp \
  ktempfile.cpp \
  kurl.cpp \
  ktextedit.cpp \
  ofileselector_p.cpp \
  ofontselector.cpp \
+oprocctrl.cpp \   
+oprocess.cpp \ 
  kdecore/kcatalogue.cpp \
  kdecore/klibloader.cpp \
  kdecore/klocale.cpp \
  kdecore/kmdcodec.cpp \
  kdecore/kshell.cpp \
  kdecore/kstandarddirs.cpp \
  kdecore/kstringhandler.cpp \
  kdeui/kaction.cpp \
  kdeui/kactionclasses.cpp \
  kdeui/kactioncollection.cpp \
  kdeui/kbuttonbox.cpp \
  kdeui/kcmodule.cpp \
  kdeui/kguiitem.cpp \
  kdeui/kjanuswidget.cpp \
  kdeui/klistbox.cpp \
  kdeui/klistview.cpp \
  kdeui/kmainwindow.cpp \
  kdeui/knuminput.cpp \
  kdeui/knumvalidator.cpp \
  kdeui/kseparator.cpp \
  kdeui/kstdaction.cpp \
  kdeui/ksqueezedtextlabel.cpp \
  kdeui/ktoolbar.cpp \
  kdeui/ktoolbarbutton.cpp \
diff --git a/microkde/oprocctrl.cpp b/microkde/oprocctrl.cpp
new file mode 100644
index 0000000..404e0b3
--- a/dev/null
+++ b/microkde/oprocctrl.cpp
@@ -0,0 +1,285 @@
+/* This file is part of the KDE libraries
+    Copyright (C) 1997 Christian Czezakte (e9025461@student.tuwien.ac.at)
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    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., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+*/
+//
+//  KPROCESSCONTROLLER -- A helper class for KProcess
+//
+//  version 0.3.1, Jan, 8th 1997
+//
+//  (C) Christian Czezatke
+//  e9025461@student.tuwien.ac.at
+//  Ported by Holger Freyther
+//
+
+//#include <config.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include <qsocketnotifier.h>
+#include "oprocctrl.h"
+
+using namespace Opie::Core::Internal;
+
+OProcessController *OProcessController::theOProcessController = 0;
+
+struct sigaction OProcessController::oldChildHandlerData;
+bool OProcessController::handlerSet = false;
+
+OProcessController::OProcessController()
+{
+    assert( theOProcessController == 0 );
+
+    if (0 > pipe(fd))
+        printf(strerror(errno));
+
+    notifier = new QSocketNotifier(fd[0], QSocketNotifier::Read);
+    notifier->setEnabled(true);
+    QObject::connect(notifier, SIGNAL(activated(int)),
+                     this, SLOT(slotDoHousekeeping(int)));
+    connect( &delayedChildrenCleanupTimer, SIGNAL( timeout()),
+             SLOT( delayedChildrenCleanup()));
+
+    theOProcessController = this;
+
+    setupHandlers();
+}
+
+
+void OProcessController::setupHandlers()
+{
+    if( handlerSet )
+        return;
+    struct sigaction act;
+    act.sa_handler=theSigCHLDHandler;
+    sigemptyset(&(act.sa_mask));
+    sigaddset(&(act.sa_mask), SIGCHLD);
+    // Make sure we don't block this signal. gdb tends to do that :-(
+    sigprocmask(SIG_UNBLOCK, &(act.sa_mask), 0);
+
+    act.sa_flags = SA_NOCLDSTOP;
+
+    // CC: take care of SunOS which automatically restarts interrupted system
+    // calls (and thus does not have SA_RESTART)
+
+#ifdef SA_RESTART
+    act.sa_flags |= SA_RESTART;
+#endif
+
+    sigaction( SIGCHLD, &act, &oldChildHandlerData );
+
+    act.sa_handler=SIG_IGN;
+    sigemptyset(&(act.sa_mask));
+    sigaddset(&(act.sa_mask), SIGPIPE);
+    act.sa_flags = 0;
+    sigaction( SIGPIPE, &act, 0L);
+    handlerSet = true;
+}
+
+void OProcessController::resetHandlers()
+{
+    if( !handlerSet )
+        return;
+    sigaction( SIGCHLD, &oldChildHandlerData, 0 );
+    // there should be no problem with SIGPIPE staying SIG_IGN
+    handlerSet = false;
+}
+
+// block SIGCHLD handler, because it accesses processList
+void OProcessController::addOProcess( OProcess* p )
+{
+    sigset_t newset, oldset;
+    sigemptyset( &newset );
+    sigaddset( &newset, SIGCHLD );
+    sigprocmask( SIG_BLOCK, &newset, &oldset );
+    processList.append( p );
+    sigprocmask( SIG_SETMASK, &oldset, 0 );
+}
+
+void OProcessController::removeOProcess( OProcess* p )
+{
+    sigset_t newset, oldset;
+    sigemptyset( &newset );
+    sigaddset( &newset, SIGCHLD );
+    sigprocmask( SIG_BLOCK, &newset, &oldset );
+    processList.remove( p );
+    sigprocmask( SIG_SETMASK, &oldset, 0 );
+}
+
+//using a struct which contains both the pid and the status makes it easier to write
+//and read the data into the pipe
+//especially this solves a problem which appeared on my box where slotDoHouseKeeping() received
+//only 4 bytes (with some debug output around the write()'s it received all 8 bytes)
+//don't know why this happened, but when writing all 8 bytes at once it works here, aleXXX
+struct waitdata
+{
+    pid_t pid;
+    int status;
+};
+
+void OProcessController::theSigCHLDHandler(int arg)
+{
+    struct waitdata wd;
+    //  int status;
+    //  pid_t this_pid;
+    int saved_errno;
+
+    saved_errno = errno;
+    // since waitpid and write change errno, we have to save it and restore it
+    // (Richard Stevens, Advanced programming in the Unix Environment)
+
+    bool found = false;
+    if( theOProcessController != 0 )
+    {
+        // iterating the list doesn't perform any system call
+        for( QValueList<OProcess*>::ConstIterator it = theOProcessController->processList.begin();
+                it != theOProcessController->processList.end();
+                ++it )
+        {
+            if( !(*it)->isRunning())
+                continue;
+            wd.pid = waitpid( (*it)->pid(), &wd.status, WNOHANG );
+            if ( wd.pid > 0 )
+            {
+                ::write(theOProcessController->fd[1], &wd, sizeof(wd));
+                found = true;
+            }
+        }
+    }
+    if( !found && oldChildHandlerData.sa_handler != SIG_IGN
+            && oldChildHandlerData.sa_handler != SIG_DFL )
+        oldChildHandlerData.sa_handler( arg ); // call the old handler
+    // handle the rest
+    if( theOProcessController != 0 )
+    {
+        static const struct waitdata dwd = { 0, 0 }
+                                           ; // delayed waitpid()
+        ::write(theOProcessController->fd[1], &dwd, sizeof(dwd));
+    }
+    else
+    {
+        int dummy;
+        while( waitpid( -1, &dummy, WNOHANG ) > 0 )
+            ;
+    }
+
+    errno = saved_errno;
+}
+
+
+
+void OProcessController::slotDoHousekeeping(int )
+{
+    unsigned int bytes_read = 0;
+    unsigned int errcnt=0;
+    // read pid and status from the pipe.
+    struct waitdata wd;
+    while ((bytes_read < sizeof(wd)) && (errcnt < 50))
+    {
+        int r = ::read(fd[0], ((char *)&wd) + bytes_read, sizeof(wd) - bytes_read);
+        if (r > 0) bytes_read += r;
+        else if (r < 0) errcnt++;
+    }
+    if (errcnt >= 50)
+    {
+        fprintf(stderr,
+                "Error: Max. error count for pipe read "
+                "exceeded in OProcessController::slotDoHousekeeping\n");
+        return;           // it makes no sense to continue here!
+    }
+    if (bytes_read != sizeof(wd))
+    {
+        fprintf(stderr,
+                "Error: Could not read info from signal handler %d <> %d!\n",
+                bytes_read, sizeof(wd));
+        return;           // it makes no sense to continue here!
+    }
+    if (wd.pid==0)
+    { // special case, see delayedChildrenCleanup()
+        delayedChildrenCleanupTimer.start( 1000, true );
+        return;
+    }
+
+    for( QValueList<OProcess*>::ConstIterator it = processList.begin();
+            it != processList.end();
+            ++it )
+    {
+        OProcess* proc = *it;
+        if (proc->pid() == wd.pid)
+        {
+            // process has exited, so do emit the respective events
+            if (proc->run_mode == OProcess::Block)
+            {
+                // If the reads are done blocking then set the status in proc
+                // but do nothing else because OProcess will perform the other
+                // actions of processHasExited.
+                proc->status = wd.status;
+                proc->runs = false;
+            }
+            else
+            {
+                proc->processHasExited(wd.status);
+            }
+            return;
+        }
+    }
+}
+
+// this is needed e.g. for popen(), which calls waitpid() checking
+// for its forked child, if we did waitpid() directly in the SIGCHLD
+// handler, popen()'s waitpid() call would fail
+void OProcessController::delayedChildrenCleanup()
+{
+    struct waitdata wd;
+    while(( wd.pid = waitpid( -1, &wd.status, WNOHANG ) ) > 0 )
+    {
+        for( QValueList<OProcess*>::ConstIterator it = processList.begin();
+                it != processList.end();
+                ++it )
+        {
+            if( !(*it)->isRunning() || (*it)->pid() != wd.pid )
+                continue;
+            // it's OProcess, handle it
+            ::write(fd[1], &wd, sizeof(wd));
+            break;
+        }
+    }
+}
+
+OProcessController::~OProcessController()
+{
+    assert( theOProcessController == this );
+    resetHandlers();
+
+    notifier->setEnabled(false);
+
+    close(fd[0]);
+    close(fd[1]);
+
+    delete notifier;
+    theOProcessController = 0;
+}
+
+//#include "kprocctrl.moc"
diff --git a/microkde/oprocctrl.h b/microkde/oprocctrl.h
new file mode 100644
index 0000000..ea00859
--- a/dev/null
+++ b/microkde/oprocctrl.h
@@ -0,0 +1,129 @@
+/* This file is part of the KDE libraries
+    Copyright (C) 1997 Christian Czezakte (e9025461@student.tuwien.ac.at)
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    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., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+*/
+//
+//  KPROCESSCONTROLLER -- A helper class for KProcess
+//
+//  version 0.3.1, Jan 8th 1997
+//
+//  (C) Christian Czezatke
+//  e9025461@student.tuwien.ac.at
+//  Ported by Holger Freyther
+//
+
+#ifndef __KPROCCTRL_H__
+#define __KPROCCTRL_H__
+
+#include <qvaluelist.h>
+#include <qtimer.h>
+
+#include "oprocess.h"
+
+class QSocketNotifier;
+
+
+namespace Opie {
+namespace Core {
+namespace Internal {
+class OProcessControllerPrivate;
+
+/**
+ * @short Used internally by @ref OProcess
+ * @internal
+ * @author Christian Czezakte <e9025461@student.tuwien.ac.at>
+ *
+ *  A class for internal use by OProcess only. -- Exactly one instance
+ *  of this class is generated by the first instance of OProcess that is
+ *  created (a pointer to it gets stored in @ref theOProcessController ).
+ *
+ * This class takes care of the actual (UN*X) signal handling.
+*/
+class OProcessController : public QObject
+{
+    Q_OBJECT
+
+public:
+    OProcessController();
+    ~OProcessController();
+    //CC: WARNING! Destructor Not virtual (but you don't derive classes from this anyhow...)
+
+public:
+
+    /**
+     * Only a single instance of this class is allowed at a time,
+     * and this static variable is used to track the one instance.
+     */
+    static OProcessController *theOProcessController;
+
+    /**
+     * Automatically called upon SIGCHLD.
+     *
+     * Normally you do not need to do anything with this function but
+     * if your application needs to disable SIGCHLD for some time for
+     * reasons beyond your control, you should call this function afterwards
+     * to make sure that no SIGCHLDs where missed.
+     */
+    static void theSigCHLDHandler(int signal);
+    // handler for sigchld
+
+    /**
+     * @internal
+    */
+    static void setupHandlers();
+    /**
+     * @internal
+    */
+    static void resetHandlers();
+    /**
+     * @internal
+    */
+    void addOProcess( OProcess* );
+    /**
+     * @internal
+    */
+    void removeOProcess( OProcess* );
+public slots:
+    /**
+     * @internal
+     */
+    void slotDoHousekeeping(int socket);
+
+private slots:
+    void delayedChildrenCleanup();
+private:
+    int fd[2];
+    QSocketNotifier *notifier;
+    static struct sigaction oldChildHandlerData;
+    static bool handlerSet;
+    QValueList<OProcess*> processList;
+    QTimer delayedChildrenCleanupTimer;
+
+    // Disallow assignment and copy-construction
+    OProcessController( const OProcessController& );
+    OProcessController& operator= ( const OProcessController& );
+
+    OProcessControllerPrivate *d;
+};
+
+}
+}
+}
+
+
+#endif
+
diff --git a/microkde/oprocess.cpp b/microkde/oprocess.cpp
new file mode 100644
index 0000000..95e3e4b
--- a/dev/null
+++ b/microkde/oprocess.cpp
@@ -0,0 +1,951 @@
+/*
+                            This file is part of the Opie Project
+                            Copyright (C) 2002-2004 Holger Freyther <zecke@handhelds.org>
+                            and The Opie Team <opie-devel@handhelds.org>
+             =.             Based on KProcess (C) 1997 Christian Czezatke (e9025461@student.tuwien.ac.at)
+           .=l.
+          .>+-=
+_;:,     .>    :=|.         This program is free software; you can
+.> <`_,   >  .   <=          redistribute it and/or  modify it under
+:`=1 )Y*s>-.--   :           the terms of the GNU Library General Public
+.="- .-=="i,     .._         License as published by the Free Software
+- .   .-<_>     .<>         Foundation; either version 2 of the License,
+    ._= =}       :          or (at your option) any later version.
+   .%`+i>       _;_.
+   .i_,=:_.      -<s.       This program 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., 59 Temple Place - Suite 330,
+                            Boston, MA 02111-1307, USA.
+*/
+
+#include "oprocctrl.h"
+
+/* OPIE */
+#include <oprocess.h>
+
+/* QT */
+
+#include <qapplication.h>
+#include <qdir.h>
+#include <qmap.h>
+#include <qsocketnotifier.h>
+#include <qtextstream.h>
+
+/* STD */
+#include <errno.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+#ifdef HAVE_INITGROUPS
+#include <grp.h>
+#endif
+
+using namespace Opie::Core::Internal;
+
+namespace Opie {
+namespace Core {
+namespace Internal {
+class OProcessPrivate
+{
+public:
+    OProcessPrivate() : useShell( false )
+    { }
+
+    bool useShell;
+    QMap<QString, QString> env;
+    QString wd;
+    QCString shell;
+};
+}
+
+OProcess::OProcess( QObject *parent, const char *name )
+        : QObject( parent, name )
+{
+    init ( );
+}
+
+OProcess::OProcess( const QString &arg0, QObject *parent, const char *name )
+        : QObject( parent, name )
+{
+    init ( );
+    *this << arg0;
+}
+
+OProcess::OProcess( const QStringList &args, QObject *parent, const char *name )
+        : QObject( parent, name )
+{
+    init ( );
+    *this << args;
+}
+
+void OProcess::init ( )
+{
+    run_mode = NotifyOnExit;
+    runs = false;
+    pid_ = 0;
+    status = 0;
+    keepPrivs = false;
+    innot = 0;
+    outnot = 0;
+    errnot = 0;
+    communication = NoCommunication;
+    input_data = 0;
+    input_sent = 0;
+    input_total = 0;
+    d = 0;
+
+    if ( 0 == OProcessController::theOProcessController )
+    {
+        ( void ) new OProcessController();
+        CHECK_PTR( OProcessController::theOProcessController );
+    }
+
+    OProcessController::theOProcessController->addOProcess( this );
+    out[ 0 ] = out[ 1 ] = -1;
+    in[ 0 ] = in[ 1 ] = -1;
+    err[ 0 ] = err[ 1 ] = -1;
+}
+
+void OProcess::setEnvironment( const QString &name, const QString &value )
+{
+    if ( !d )
+        d = new OProcessPrivate;
+    d->env.insert( name, value );
+}
+
+void OProcess::setWorkingDirectory( const QString &dir )
+{
+    if ( !d )
+        d = new OProcessPrivate;
+    d->wd = dir;
+}
+
+void OProcess::setupEnvironment()
+{
+    if ( d )
+    {
+        QMap<QString, QString>::Iterator it;
+        for ( it = d->env.begin(); it != d->env.end(); ++it )
+            setenv( QFile::encodeName( it.key() ).data(),
+                    QFile::encodeName( it.data() ).data(), 1 );
+        if ( !d->wd.isEmpty() )
+            chdir( QFile::encodeName( d->wd ).data() );
+    }
+}
+
+void OProcess::setRunPrivileged( bool keepPrivileges )
+{
+    keepPrivs = keepPrivileges;
+}
+
+bool OProcess::runPrivileged() const
+{
+    return keepPrivs;
+}
+
+OProcess::~OProcess()
+{
+    // destroying the OProcess instance sends a SIGKILL to the
+    // child process (if it is running) after removing it from the
+    // list of valid processes (if the process is not started as
+    // "DontCare")
+
+    OProcessController::theOProcessController->removeOProcess( this );
+    // this must happen before we kill the child
+    // TODO: block the signal while removing the current process from the process list
+
+    if ( runs && ( run_mode != DontCare ) )
+        kill( SIGKILL );
+
+    // Clean up open fd's and socket notifiers.
+    closeStdin();
+    closeStdout();
+    closeStderr();
+
+    // TODO: restore SIGCHLD and SIGPIPE handler if this is the last OProcess
+    delete d;
+}
+
+void OProcess::detach()
+{
+    OProcessController::theOProcessController->removeOProcess( this );
+
+    runs = false;
+    pid_ = 0;
+
+    // Clean up open fd's and socket notifiers.
+    closeStdin();
+    closeStdout();
+    closeStderr();
+}
+
+bool OProcess::setExecutable( const QString& proc )
+{
+    if ( runs )
+        return false;
+
+    if ( proc.isEmpty() )
+        return false;
+
+    if ( !arguments.isEmpty() )
+        arguments.remove( arguments.begin() );
+    arguments.prepend( QFile::encodeName( proc ) );
+
+    return true;
+}
+
+OProcess &OProcess::operator<<( const QStringList& args )
+{
+    QStringList::ConstIterator it = args.begin();
+    for ( ; it != args.end() ; ++it )
+        arguments.append( QFile::encodeName( *it ) );
+    return *this;
+}
+
+OProcess &OProcess::operator<<( const QCString& arg )
+{
+    return operator<< ( arg.data() );
+}
+
+OProcess &OProcess::operator<<( const char* arg )
+{
+    arguments.append( arg );
+    return *this;
+}
+
+OProcess &OProcess::operator<<( const QString& arg )
+{
+    arguments.append( QFile::encodeName( arg ) );
+    return *this;
+}
+
+void OProcess::clearArguments()
+{
+    arguments.clear();
+}
+
+bool OProcess::start( RunMode runmode, Communication comm )
+{
+    uint i;
+    uint n = arguments.count();
+    char **arglist;
+
+    if ( runs || ( 0 == n ) )
+    {
+        return false;  // cannot start a process that is already running
+        // or if no executable has been assigned
+    }
+    run_mode = runmode;
+    status = 0;
+
+    QCString shellCmd;
+    if ( d && d->useShell )
+    {
+        if ( d->shell.isEmpty() )
+        {
+            qWarning( "Could not find a valid shell" );
+            return false;
+        }
+
+        arglist = static_cast<char **>( malloc( ( 4 ) * sizeof( char * ) ) );
+        for ( i = 0; i < n; i++ )
+        {
+            shellCmd += arguments[ i ];
+            shellCmd += " "; // CC: to separate the arguments
+        }
+
+        arglist[ 0 ] = d->shell.data();
+        arglist[ 1 ] = ( char * ) "-c";
+        arglist[ 2 ] = shellCmd.data();
+        arglist[ 3 ] = 0;
+    }
+    else
+    {
+        arglist = static_cast<char **>( malloc( ( n + 1 ) * sizeof( char * ) ) );
+        for ( i = 0; i < n; i++ )
+            arglist[ i ] = arguments[ i ].data();
+        arglist[ n ] = 0;
+    }
+
+    if ( !setupCommunication( comm ) )
+        qWarning( "Could not setup Communication!" );
+
+    // We do this in the parent because if we do it in the child process
+    // gdb gets confused when the application runs from gdb.
+    uid_t uid = getuid();
+    gid_t gid = getgid();
+#ifdef HAVE_INITGROUPS
+
+    struct passwd *pw = getpwuid( uid );
+#endif
+
+    int fd[ 2 ];
+    if ( 0 > pipe( fd ) )
+    {
+        fd[ 0 ] = fd[ 1 ] = 0; // Pipe failed.. continue
+    }
+
+    runs = true;
+
+    QApplication::flushX();
+
+    // WABA: Note that we use fork() and not vfork() because
+    // vfork() has unclear semantics and is not standardized.
+    pid_ = fork();
+
+    if ( 0 == pid_ )
+    {
+        if ( fd[ 0 ] )
+            close( fd[ 0 ] );
+        if ( !runPrivileged() )
+        {
+            setgid( gid );
+#if defined( HAVE_INITGROUPS)
+
+            if ( pw )
+                initgroups( pw->pw_name, pw->pw_gid );
+#endif
+
+            setuid( uid );
+        }
+        // The child process
+        if ( !commSetupDoneC() )
+            qWarning( "Could not finish comm setup in child!" );
+
+        setupEnvironment();
+
+        // Matthias
+        if ( run_mode == DontCare )
+            setpgid( 0, 0 );
+        // restore default SIGPIPE handler (Harri)
+        struct sigaction act;
+        sigemptyset( &( act.sa_mask ) );
+        sigaddset( &( act.sa_mask ), SIGPIPE );
+        act.sa_handler = SIG_DFL;
+        act.sa_flags = 0;
+        sigaction( SIGPIPE, &act, 0L );
+
+        // We set the close on exec flag.
+        // Closing of fd[1] indicates that the execvp succeeded!
+        if ( fd[ 1 ] )
+            fcntl( fd[ 1 ], F_SETFD, FD_CLOEXEC );
+        execvp( arglist[ 0 ], arglist );
+        char resultByte = 1;
+        if ( fd[ 1 ] )
+            write( fd[ 1 ], &resultByte, 1 );
+        _exit( -1 );
+    }
+    else if ( -1 == pid_ )
+    {
+        // forking failed
+
+        runs = false;
+        free( arglist );
+        return false;
+    }
+    else
+    {
+        if ( fd[ 1 ] )
+            close( fd[ 1 ] );
+        // the parent continues here
+
+        // Discard any data for stdin that might still be there
+        input_data = 0;
+
+        // Check whether client could be started.
+        if ( fd[ 0 ] )
+            for ( ;; )
+            {
+                char resultByte;
+                int n = ::read( fd[ 0 ], &resultByte, 1 );
+                if ( n == 1 )
+                {
+                    // Error
+                    runs = false;
+                    close( fd[ 0 ] );
+                    free( arglist );
+                    pid_ = 0;
+                    return false;
+                }
+                if ( n == -1 )
+                {
+                    if ( ( errno == ECHILD ) || ( errno == EINTR ) )
+                        continue; // Ignore
+                }
+                break; // success
+            }
+        if ( fd[ 0 ] )
+            close( fd[ 0 ] );
+
+        if ( !commSetupDoneP() )   // finish communication socket setup for the parent
+            qWarning( "Could not finish comm setup in parent!" );
+
+        if ( run_mode == Block )
+        {
+            commClose();
+
+            // The SIGCHLD handler of the process controller will catch
+            // the exit and set the status
+            while ( runs )
+            {
+                OProcessController::theOProcessController->
+                slotDoHousekeeping( 0 );
+            }
+            runs = FALSE;
+            emit processExited( this );
+        }
+    }
+    free( arglist );
+    return true;
+}
+
+
+
+bool OProcess::kill( int signo )
+{
+    bool rv = false;
+
+    if ( 0 != pid_ )
+        rv = ( -1 != ::kill( pid_, signo ) );
+    // probably store errno somewhere...
+    return rv;
+}
+
+bool OProcess::isRunning() const
+{
+    return runs;
+}
+
+pid_t OProcess::pid() const
+{
+    return pid_;
+}
+
+bool OProcess::normalExit() const
+{
+    int _status = status;
+    return ( pid_ != 0 ) && ( !runs ) && ( WIFEXITED( ( _status ) ) );
+}
+
+int OProcess::exitStatus() const
+{
+    int _status = status;
+    return WEXITSTATUS( ( _status ) );
+}
+
+bool OProcess::writeStdin( const char *buffer, int buflen )
+{
+    bool rv;
+
+    // if there is still data pending, writing new data
+    // to stdout is not allowed (since it could also confuse
+    // kprocess...
+    if ( 0 != input_data )
+        return false;
+
+    if ( runs && ( communication & Stdin ) )
+    {
+        input_data = buffer;
+        input_sent = 0;
+        input_total = buflen;
+        slotSendData( 0 );
+        innot->setEnabled( true );
+        rv = true;
+    }
+    else
+        rv = false;
+    return rv;
+}
+
+void OProcess::flushStdin ( )
+{
+    if ( !input_data || ( input_sent == input_total ) )
+        return ;
+
+    int d1, d2;
+
+    do
+    {
+        d1 = input_total - input_sent;
+        slotSendData ( 0 );
+        d2 = input_total - input_sent;
+    }
+    while ( d2 <= d1 );
+}
+
+void OProcess::suspend()
+{
+    if ( ( communication & Stdout ) && outnot )
+        outnot->setEnabled( false );
+}
+
+void OProcess::resume()
+{
+    if ( ( communication & Stdout ) && outnot )
+        outnot->setEnabled( true );
+}
+
+bool OProcess::closeStdin()
+{
+    bool rv;
+
+    if ( communication & Stdin )
+    {
+        communication = ( Communication ) ( communication & ~Stdin );
+        delete innot;
+        innot = 0;
+        close( in[ 1 ] );
+        rv = true;
+    }
+    else
+        rv = false;
+    return rv;
+}
+
+bool OProcess::closeStdout()
+{
+    bool rv;
+
+    if ( communication & Stdout )
+    {
+        communication = ( Communication ) ( communication & ~Stdout );
+        delete outnot;
+        outnot = 0;
+        close( out[ 0 ] );
+        rv = true;
+    }
+    else
+        rv = false;
+    return rv;
+}
+
+bool OProcess::closeStderr()
+{
+    bool rv;
+
+    if ( communication & Stderr )
+    {
+        communication = static_cast<Communication>( communication & ~Stderr );
+        delete errnot;
+        errnot = 0;
+        close( err[ 0 ] );
+        rv = true;
+    }
+    else
+        rv = false;
+    return rv;
+}
+
+void OProcess::slotChildOutput( int fdno )
+{
+    if ( !childOutput( fdno ) )
+        closeStdout();
+}
+
+void OProcess::slotChildError( int fdno )
+{
+    if ( !childError( fdno ) )
+        closeStderr();
+}
+
+void OProcess::slotSendData( int )
+{
+    if ( input_sent == input_total )
+    {
+        innot->setEnabled( false );
+        input_data = 0;
+        emit wroteStdin( this );
+    }
+    else
+        input_sent += ::write( in[ 1 ], input_data + input_sent, input_total - input_sent );
+}
+
+void OProcess::processHasExited( int state )
+{
+    if ( runs )
+    {
+        runs = false;
+        status = state;
+
+        commClose(); // cleanup communication sockets
+
+        // also emit a signal if the process was run Blocking
+        if ( DontCare != run_mode )
+        {
+            emit processExited( this );
+        }
+    }
+}
+
+int OProcess::childOutput( int fdno )
+{
+    if ( communication & NoRead )
+    {
+        int len = -1;
+        emit receivedStdout( fdno, len );
+        errno = 0; // Make sure errno doesn't read "EAGAIN"
+        return len;
+    }
+    else
+    {
+        char buffer[ 1024 ];
+        int len;
+
+        len = ::read( fdno, buffer, 1024 );
+
+        if ( 0 < len )
+        {
+            emit receivedStdout( this, buffer, len );
+        }
+        return len;
+    }
+}
+
+int OProcess::childError( int fdno )
+{
+    char buffer[ 1024 ];
+    int len;
+
+    len = ::read( fdno, buffer, 1024 );
+
+    if ( 0 < len )
+        emit receivedStderr( this, buffer, len );
+    return len;
+}
+
+int OProcess::setupCommunication( Communication comm )
+{
+    int ok;
+
+    communication = comm;
+
+    ok = 1;
+    if ( comm & Stdin )
+        ok &= socketpair( AF_UNIX, SOCK_STREAM, 0, in ) >= 0;
+
+    if ( comm & Stdout )
+        ok &= socketpair( AF_UNIX, SOCK_STREAM, 0, out ) >= 0;
+
+    if ( comm & Stderr )
+        ok &= socketpair( AF_UNIX, SOCK_STREAM, 0, err ) >= 0;
+
+    return ok;
+}
+
+int OProcess::commSetupDoneP()
+{
+    int ok = 1;
+
+    if ( communication != NoCommunication )
+    {
+        if ( communication & Stdin )
+            close( in[ 0 ] );
+        if ( communication & Stdout )
+            close( out[ 1 ] );
+        if ( communication & Stderr )
+            close( err[ 1 ] );
+
+        // Don't create socket notifiers and set the sockets non-blocking if
+        // blocking is requested.
+        if ( run_mode == Block )
+            return ok;
+
+        if ( communication & Stdin )
+        {
+            //        ok &= (-1 != fcntl(in[1], F_SETFL, O_NONBLOCK));
+            innot = new QSocketNotifier( in[ 1 ], QSocketNotifier::Write, this );
+            CHECK_PTR( innot );
+            innot->setEnabled( false ); // will be enabled when data has to be sent
+            QObject::connect( innot, SIGNAL( activated(int) ),
+                              this, SLOT( slotSendData(int) ) );
+        }
+
+        if ( communication & Stdout )
+        {
+            //        ok &= (-1 != fcntl(out[0], F_SETFL, O_NONBLOCK));
+            outnot = new QSocketNotifier( out[ 0 ], QSocketNotifier::Read, this );
+            CHECK_PTR( outnot );
+            QObject::connect( outnot, SIGNAL( activated(int) ),
+                              this, SLOT( slotChildOutput(int) ) );
+            if ( communication & NoRead )
+                suspend();
+        }
+
+        if ( communication & Stderr )
+        {
+            //        ok &= (-1 != fcntl(err[0], F_SETFL, O_NONBLOCK));
+            errnot = new QSocketNotifier( err[ 0 ], QSocketNotifier::Read, this );
+            CHECK_PTR( errnot );
+            QObject::connect( errnot, SIGNAL( activated(int) ),
+                              this, SLOT( slotChildError(int) ) );
+        }
+    }
+    return ok;
+}
+
+int OProcess::commSetupDoneC()
+{
+    int ok = 1;
+    struct linger so;
+    memset( &so, 0, sizeof( so ) );
+
+    if ( communication & Stdin )
+        close( in[ 1 ] );
+    if ( communication & Stdout )
+        close( out[ 0 ] );
+    if ( communication & Stderr )
+        close( err[ 0 ] );
+
+    if ( communication & Stdin )
+        ok &= dup2( in[ 0 ], STDIN_FILENO ) != -1;
+    else
+    {
+        int null_fd = open( "/dev/null", O_RDONLY );
+        ok &= dup2( null_fd, STDIN_FILENO ) != -1;
+        close( null_fd );
+    }
+    if ( communication & Stdout )
+    {
+        ok &= dup2( out[ 1 ], STDOUT_FILENO ) != -1;
+        ok &= !setsockopt( out[ 1 ], SOL_SOCKET, SO_LINGER, ( char* ) & so, sizeof( so ) );
+    }
+    else
+    {
+        int null_fd = open( "/dev/null", O_WRONLY );
+        ok &= dup2( null_fd, STDOUT_FILENO ) != -1;
+        close( null_fd );
+    }
+    if ( communication & Stderr )
+    {
+        ok &= dup2( err[ 1 ], STDERR_FILENO ) != -1;
+        ok &= !setsockopt( err[ 1 ], SOL_SOCKET, SO_LINGER, reinterpret_cast<char *>( &so ), sizeof( so ) );
+    }
+    else
+    {
+        int null_fd = open( "/dev/null", O_WRONLY );
+        ok &= dup2( null_fd, STDERR_FILENO ) != -1;
+        close( null_fd );
+    }
+    return ok;
+}
+
+void OProcess::commClose()
+{
+    if ( NoCommunication != communication )
+    {
+        bool b_in = ( communication & Stdin );
+        bool b_out = ( communication & Stdout );
+        bool b_err = ( communication & Stderr );
+        if ( b_in )
+            delete innot;
+
+        if ( b_out || b_err )
+        {
+            // If both channels are being read we need to make sure that one socket buffer
+            // doesn't fill up whilst we are waiting for data on the other (causing a deadlock).
+            // Hence we need to use select.
+
+            // Once one or other of the channels has reached EOF (or given an error) go back
+            // to the usual mechanism.
+
+            int fds_ready = 1;
+            fd_set rfds;
+
+            int max_fd = 0;
+            if ( b_out )
+            {
+                fcntl( out[ 0 ], F_SETFL, O_NONBLOCK );
+                if ( out[ 0 ] > max_fd )
+                    max_fd = out[ 0 ];
+                delete outnot;
+                outnot = 0;
+            }
+            if ( b_err )
+            {
+                fcntl( err[ 0 ], F_SETFL, O_NONBLOCK );
+                if ( err[ 0 ] > max_fd )
+                    max_fd = err[ 0 ];
+                delete errnot;
+                errnot = 0;
+            }
+
+
+            while ( b_out || b_err )
+            {
+                // * If the process is still running we block until we
+                // receive data. (p_timeout = 0, no timeout)
+                // * If the process has already exited, we only check
+                // the available data, we don't wait for more.
+                // (p_timeout = &timeout, timeout immediately)
+                struct timeval timeout;
+                timeout.tv_sec = 0;
+                timeout.tv_usec = 0;
+                struct timeval *p_timeout = runs ? 0 : &timeout;
+
+                FD_ZERO( &rfds );
+                if ( b_out )
+                    FD_SET( out[ 0 ], &rfds );
+
+                if ( b_err )
+                    FD_SET( err[ 0 ], &rfds );
+
+                fds_ready = select( max_fd + 1, &rfds, 0, 0, p_timeout );
+                if ( fds_ready <= 0 )
+                    break;
+
+                if ( b_out && FD_ISSET( out[ 0 ], &rfds ) )
+                {
+                    int ret = 1;
+                    while ( ret > 0 )
+                        ret = childOutput( out[ 0 ] );
+                    if ( ( ret == -1 && errno != EAGAIN ) || ret == 0 )
+                        b_out = false;
+                }
+
+                if ( b_err && FD_ISSET( err[ 0 ], &rfds ) )
+                {
+                    int ret = 1;
+                    while ( ret > 0 )
+                        ret = childError( err[ 0 ] );
+                    if ( ( ret == -1 && errno != EAGAIN ) || ret == 0 )
+                        b_err = false;
+                }
+            }
+        }
+
+        if ( b_in )
+        {
+            communication = ( Communication ) ( communication & ~Stdin );
+            close( in[ 1 ] );
+        }
+        if ( b_out )
+        {
+            communication = ( Communication ) ( communication & ~Stdout );
+            close( out[ 0 ] );
+        }
+        if ( b_err )
+        {
+            communication = ( Communication ) ( communication & ~Stderr );
+            close( err[ 0 ] );
+        }
+    }
+}
+
+void OProcess::setUseShell( bool useShell, const char *shell )
+{
+    if ( !d )
+        d = new OProcessPrivate;
+    d->useShell = useShell;
+    d->shell = shell;
+    if ( d->shell.isEmpty() )
+        d->shell = searchShell();
+}
+
+QString OProcess::quote( const QString &arg )
+{
+    QString res = arg;
+    res.replace( QRegExp( QString::fromLatin1( "\'" ) ),
+                 QString::fromLatin1( "'\"'\"'" ) );
+    res.prepend( '\'' );
+    res.append( '\'' );
+    return res;
+}
+
+QCString OProcess::searchShell()
+{
+    QCString tmpShell = QCString( getenv( "SHELL" ) ).stripWhiteSpace();
+    if ( !isExecutable( tmpShell ) )
+    {
+        tmpShell = "/bin/sh";
+    }
+
+    return tmpShell;
+}
+
+bool OProcess::isExecutable( const QCString &filename )
+{
+    struct stat fileinfo;
+
+    if ( filename.isEmpty() )
+        return false;
+
+    // CC: we've got a valid filename, now let's see whether we can execute that file
+
+    if ( -1 == stat( filename.data(), &fileinfo ) )
+        return false;
+    // CC: return false if the file does not exist
+
+    // CC: anyway, we cannot execute directories, block/character devices, fifos or sockets
+    if ( ( S_ISDIR( fileinfo.st_mode ) ) ||
+            ( S_ISCHR( fileinfo.st_mode ) ) ||
+            ( S_ISBLK( fileinfo.st_mode ) ) ||
+#ifdef S_ISSOCK
+            // CC: SYSVR4 systems don't have that macro
+            ( S_ISSOCK( fileinfo.st_mode ) ) ||
+#endif
+            ( S_ISFIFO( fileinfo.st_mode ) ) ||
+            ( S_ISDIR( fileinfo.st_mode ) ) )
+    {
+        return false;
+    }
+
+    // CC: now check for permission to execute the file
+    if ( access( filename.data(), X_OK ) != 0 )
+        return false;
+
+    // CC: we've passed all the tests...
+    return true;
+}
+
+int OProcess::processPID( const QString& process )
+{
+    QString line;
+    QDir d = QDir( "/proc" );
+    QStringList dirs = d.entryList( QDir::Dirs );
+    QStringList::Iterator it;
+    for ( it = dirs.begin(); it != dirs.end(); ++it )
+    {
+        //qDebug( "next entry: %s", (const char*) *it );
+        QFile file( "/proc/"+*it+"/cmdline" );
+        file.open( IO_ReadOnly );
+        if ( !file.isOpen() ) continue;
+        QTextStream t( &file );
+        line = t.readLine();
+        //qDebug( "cmdline = %s", (const char*) line );
+        if ( line.contains( process ) ) break; //FIXME: That may find also other process, if the name is not long enough ;)
+    }
+    if ( line.contains( process ) )
+    {
+        //qDebug( "found process id #%d", (*it).toInt() );
+        return (*it).toInt();
+    }
+    else
+    {
+        //qDebug( "process '%s' not found", (const char*) process );
+        return 0;
+    }
+}
+
+}
+}
diff --git a/microkde/oprocess.h b/microkde/oprocess.h
new file mode 100644
index 0000000..be1436c
--- a/dev/null
+++ b/microkde/oprocess.h
@@ -0,0 +1,761 @@
+/*
+                            This file is part of the Opie Project
+                            Copyright (C) 2003-2004 Holger Freyther <zecke@handhelds.org>
+                            Copyright (C) The Opie Team <opie-devel@handhelds.org>
+             =.             Based on KProcess (C) 1997 Christian Czezatke (e9025461@student.tuwien.ac.at)
+           .=l.
+          .>+-=
+_;:,     .>    :=|.         This program is free software; you can
+.> <`_,   >  .   <=         redistribute it and/or  modify it under
+:`=1 )Y*s>-.--   :          the terms of the GNU Library General Public
+.="- .-=="i,     .._        License as published by the Free Software
+- .   .-<_>     .<>         Foundation; either version 2 of the License,
+    ._= =}       :          or (at your option) any later version.
+   .%`+i>       _;_.
+   .i_,=:_.      -<s.       This program 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., 59 Temple Place - Suite 330,
+                            Boston, MA 02111-1307, USA.
+*/
+
+#ifndef OPROCESS_H
+#define OPROCESS_H
+
+/* QT */
+#include <qcstring.h>
+#include <qobject.h>
+#include <qvaluelist.h>
+
+/* STD */
+#include <sys/types.h> // for pid_t
+#include <sys/wait.h>
+#include <signal.h>
+#include <unistd.h>
+
+class QSocketNotifier;
+
+namespace Opie {
+namespace Core {
+namespace Internal {
+class OProcessController;
+class OProcessPrivate;
+}
+
+/**
+ * Child process invocation, monitoring and control.
+ *
+ * @sect General usage and features
+ *
+ *This class allows a KDE and OPIE application to start child processes without having
+ *to worry about UN*X signal handling issues and zombie process reaping.
+ *
+ *@see KProcIO
+ *
+ *Basically, this class distinguishes three different ways of running
+ *child processes:
+ *
+ *@li  OProcess::DontCare -- The child process is invoked and both the child
+ *process and the parent process continue concurrently.
+ *
+ *Starting a  DontCare child process means that the application is
+ *not interested in any notification to determine whether the
+ *child process has already exited or not.
+ *
+ *@li  OProcess::NotifyOnExit -- The child process is invoked and both the
+ *child and the parent process run concurrently.
+ *
+ *When the child process exits, the OProcess instance
+ *corresponding to it emits the Qt signal @ref processExited().
+ *
+ *Since this signal is @em not emitted from within a UN*X
+ *signal handler, arbitrary function calls can be made.
+ *
+ *Be aware: When the OProcess objects gets destructed, the child
+ *process will be killed if it is still running!
+ *This means in particular, that you cannot use a OProcess on the stack
+ *with OProcess::NotifyOnExit.
+ *
+ *@li  OProcess::Block -- The child process starts and the parent process
+ *is suspended until the child process exits. (@em Really not recommended
+ *for programs with a GUI.)
+ *
+ *OProcess also provides several functions for determining the exit status
+ *and the pid of the child process it represents.
+ *
+ *Furthermore it is possible to supply command-line arguments to the process
+ *in a clean fashion (no null -- terminated stringlists and such...)
+ *
+ *A small usage example:
+ *<pre>
+ *OProcess *proc = new OProcess;
+ *
+ **proc << "my_executable";
+ **proc << "These" << "are" << "the" << "command" << "line" << "args";
+ *QApplication::connect(proc, SIGNAL(processExited(Opie::Core::OProcess *)),
+ *                      pointer_to_my_object, SLOT(my_objects_slot(Opie::Core::OProcess *)));
+ *proc->start();
+ *</pre>
+ *
+ *This will start "my_executable" with the commandline arguments "These"...
+ *
+ *When the child process exits, the respective Qt signal will be emitted.
+ *
+ *@sect Communication with the child process
+ *
+ *OProcess supports communication with the child process through
+ *stdin/stdout/stderr.
+ *
+ *The following functions are provided for getting data from the child
+ *process or sending data to the child's stdin (For more information,
+ *have a look at the documentation of each function):
+ *
+ *@li bool @ref writeStdin(char  *buffer, int  buflen);
+ *@li  -- Transmit data to the child process's stdin.
+ *
+ *@li bool @ref closeStdin();
+ *@li -- Closes the child process's stdin (which causes it to see an  feof(stdin)).
+ *Returns false if you try to close stdin for a process that has been started
+ *without a communication channel to stdin.
+ *
+ *@li bool @ref closeStdout();
+ *@li -- Closes the child process's stdout.
+ *Returns false if you try to close stdout for a process that has been started
+ *without a communication channel to stdout.
+ *
+ *@li bool @ref closeStderr();
+ *@li -- Closes the child process's stderr.
+ *Returns false if you try to close stderr for a process that has been started
+ *without a communication channel to stderr.
+ *
+ *
+ *@sect QT signals:
+ *
+ *@li void @ref receivedStdout(OProcess  *proc, char  *buffer, int  buflen);
+ *@li  void @ref receivedStderr(OProcess  *proc, char  *buffer, int  buflen);
+ *@li  -- Indicates that new data has arrived from either the
+ *child process's stdout or stderr.
+ *
+ *@li  void @ref wroteStdin(OProcess  *proc);
+ *@li  -- Indicates that all data that has been sent to the child process
+ *by a prior call to @ref writeStdin() has actually been transmitted to the
+ *client .
+ *
+ *@author Christian Czezakte e9025461@student.tuwien.ac.at
+ *@author Holger Freyther (Opie Port)
+ *
+ **/
+class OProcess : public QObject
+{
+    Q_OBJECT
+
+public:
+
+    /**
+     * Modes in which the communication channel can be opened.
+     *
+     * If communication for more than one channel is required,
+     * the values have to be or'ed together, for example to get
+     * communication with stdout as well as with stdin, you would
+     * specify @p Stdin @p | @p Stdout
+     *
+     * If @p NoRead is specified in conjunction with @p Stdout,
+     * no data is actually read from @p Stdout but only
+     * the signal @ref childOutput(int fd) is emitted.
+     */
+    enum Communication { NoCommunication = 0, Stdin = 1, Stdout = 2, Stderr = 4,
+                         AllOutput = 6, All = 7,
+                         NoRead };
+
+    /**
+     * Run-modes for a child process.
+     */
+    enum RunMode {
+        /**
+         * The application does not receive notifications from the subprocess when
+         * it is finished or aborted.
+         */
+        DontCare,
+        /**
+         * The application is notified when the subprocess dies.
+         */
+        NotifyOnExit,
+        /**
+         * The application is suspended until the started process is finished.
+         */
+        Block };
+
+    /**
+     * Constructor
+     */
+    OProcess( QObject *parent = 0, const char *name = 0 );
+    /**
+     * Constructor
+     */
+    OProcess( const QString &arg0, QObject *parent = 0, const char *name = 0 );
+    /**
+     * Constructor
+     */
+    OProcess( const QStringList &args, QObject *parent = 0, const char *name = 0 );
+
+    /**
+     *Destructor:
+     *
+     *  If the process is running when the destructor for this class
+     *  is called, the child process is killed with a SIGKILL, but
+     *  only if the run mode is not of type @p DontCare.
+     *  Processes started as @p DontCare keep running anyway.
+    */
+    virtual ~OProcess();
+
+    /**
+     @deprecated
+
+           The use of this function is now deprecated. -- Please use the
+    "operator<<" instead of "setExecutable".
+
+    Sets the executable to be started with this OProcess object.
+    Returns false if the process is currently running (in that
+    case the executable remains unchanged.)
+
+    @see operator<<
+
+    */
+    bool setExecutable( const QString& proc );
+
+
+    /**
+     * Sets the executable and the command line argument list for this process.
+     *
+     * For example, doing an "ls -l /usr/local/bin" can be achieved by:
+     *  <pre>
+     *  OProcess p;
+     *  ...
+     *  p << "ls" << "-l" << "/usr/local/bin"
+     *  </pre>
+     *
+     **/
+    OProcess &operator<<( const QString& arg );
+    /**
+     * Similar to previous method, takes a char *, supposed to be in locale 8 bit already.
+     */
+    OProcess &operator<<( const char * arg );
+    /**
+     * Similar to previous method, takes a QCString, supposed to be in locale 8 bit already.
+     */
+    OProcess &operator<<( const QCString & arg );
+
+    /**
+     * Sets the executable and the command line argument list for this process,
+     * in a single method call, or add a list of arguments.
+     **/
+    OProcess &operator<<( const QStringList& args );
+
+    /**
+     * Clear a command line argument list that has been set by using
+     * the "operator<<".
+    */
+    void clearArguments();
+
+    /**
+     *  Starts the process.
+     *  For a detailed description of the
+     *  various run modes and communication semantics, have a look at the
+     *  general description of the OProcess class.
+     *
+     *  The following problems could cause this function to
+     *    return false:
+     *
+     *  @li The process is already running.
+     *  @li The command line argument list is empty.
+     *  @li The starting of the process failed (could not fork).
+     *  @li The executable was not found.
+     *
+     *  @param comm  Specifies which communication links should be
+     *  established to the child process (stdin/stdout/stderr). By default,
+     *  no communication takes place and the respective communication
+     *  signals will never get emitted.
+     *
+     *  @return true on success, false on error
+     *  (see above for error conditions)
+     **/
+    virtual bool start( RunMode runmode = NotifyOnExit,
+                        Communication comm = NoCommunication );
+
+    /**
+     * Stop the process (by sending it a signal).
+     *
+     * @param signo	The signal to send. The default is SIGTERM.
+     * @return @p true if the signal was delivered successfully.
+    */
+    virtual bool kill( int signo = SIGTERM );
+
+    /**
+       @return @p true if the process is (still) considered to be running
+    */
+    bool isRunning() const;
+
+    /** Returns the process id of the process.
+     *
+     * If it is called after
+     * the process has exited, it returns the process id of the last
+     *  child process that was created by this instance of OProcess.
+     *
+     *  Calling it before any child process has been started by this
+     *  OProcess instance causes pid() to return 0.
+     **/
+    pid_t pid() const;
+
+    /**
+     * Suspend processing of data from stdout of the child process.
+     */
+    void suspend();
+
+    /**
+     * Resume processing of data from stdout of the child process.
+     */
+    void resume();
+
+    /**
+     * @return @p true if the process has already finished and has exited
+     *  "voluntarily", ie: it has not been killed by a signal.
+     *
+     * Note that you should check @ref OProcess::exitStatus() to determine
+     * whether the process completed its task successful or not.
+     */
+    bool normalExit() const;
+
+    /**
+     * Returns the exit status of the process.
+     *
+     * Please use
+     * @ref OProcess::normalExit() to check whether the process has exited
+     * cleanly (i.e., @ref OProcess::normalExit() returns @p true) before calling
+     * this function because if the process did not exit normally,
+     * it does not have a valid exit status.
+    */
+    int exitStatus() const;
+
+
+    /**
+     *	 Transmit data to the child process's stdin.
+     *
+     * OProcess::writeStdin may return false in the following cases:
+     *
+     *     @li The process is not currently running.
+     *
+     *     @li Communication to stdin has not been requested in the @ref start() call.
+     *
+     *     @li Transmission of data to the child process by a previous call to
+     * @ref writeStdin() is still in progress.
+     *
+     * Please note that the data is sent to the client asynchronously,
+     * so when this function returns, the data might not have been
+     * processed by the child process.
+     *
+     * If all the data has been sent to the client, the signal
+     * @ref wroteStdin() will be emitted.
+     *
+     * Please note that you must not free "buffer" or call @ref writeStdin()
+     * again until either a @ref wroteStdin() signal indicates that the
+     * data has been sent or a @ref processHasExited() signal shows that
+     * the child process is no longer alive...
+     **/
+    bool writeStdin( const char *buffer, int buflen );
+
+    void flushStdin();
+
+    /**
+     * This causes the stdin file descriptor of the child process to be
+     * closed indicating an "EOF" to the child.
+     *
+     * @return @p false if no communication to the process's stdin
+     *  had been specified in the call to @ref start().
+    */
+    bool closeStdin();
+
+    /**
+     * This causes the stdout file descriptor of the child process to be
+     * closed.
+     *
+     * @return @p false if no communication to the process's stdout
+     *  had been specified in the call to @ref start().
+    */
+    bool closeStdout();
+
+    /**
+     * This causes the stderr file descriptor of the child process to be
+     * closed.
+     *
+     * @return @p false if no communication to the process's stderr
+     *  had been specified in the call to @ref start().
+    */
+    bool closeStderr();
+
+    /**
+     * Lets you see what your arguments are for debugging.
+     * \todo make const
+     */
+
+    const QValueList<QCString> &args()
+    {
+        return arguments;
+    }
+
+    /**
+     * Controls whether the started process should drop any
+     * setuid/segid privileges or whether it should keep them
+     *
+     * The default is @p false : drop privileges
+     */
+    void setRunPrivileged( bool keepPrivileges );
+
+    /**
+     * Returns whether the started process will drop any
+     * setuid/segid privileges or whether it will keep them
+     */
+    bool runPrivileged() const;
+
+    /**
+     * Modifies the environment of the process to be started.
+     * This function must be called before starting the process.
+     */
+    void setEnvironment( const QString &name, const QString &value );
+
+    /**
+     * Changes the current working directory (CWD) of the process
+     * to be started.
+     * This function must be called before starting the process.
+     */
+    void setWorkingDirectory( const QString &dir );
+
+    /**
+     * Specify whether to start the command via a shell or directly.
+     * The default is to start the command directly.
+     * If @p useShell is true @p shell will be used as shell, or
+     * if shell is empty, the standard shell is used.
+     * @p quote A flag indicating whether to quote the arguments.
+     *
+     * When using a shell, the caller should make sure that all filenames etc.
+     * are properly quoted when passed as argument.
+     * @see quote()
+     */
+    void setUseShell( bool useShell, const char *shell = 0 );
+
+    /**
+     * This function can be used to quote an argument string such that
+     * the shell processes it properly. This is e. g. necessary for
+     * user-provided file names which may contain spaces or quotes.
+     * It also prevents expansion of wild cards and environment variables.
+     */
+    static QString quote( const QString &arg );
+
+    /**
+     * Detaches OProcess from child process. All communication is closed.
+     * No exit notification is emitted any more for the child process.
+     * Deleting the OProcess will no longer kill the child process.
+     * Note that the current process remains the parent process of the
+     * child process.
+     */
+    void detach();
+
+    /**
+     * @return the PID of @a process, or -1 if the process is not running
+     */
+    static int processPID( const QString& process );
+
+signals:
+
+    /**
+     * Emitted after the process has terminated when
+     * the process was run in the @p NotifyOnExit  (==default option to
+     * @ref start()) or the @ref Block mode.
+     **/
+    void processExited( Opie::Core::OProcess *proc );
+
+
+    /**
+     * Emitted, when output from the child process has
+     * been received on stdout.
+     *
+     *  To actually get
+     * these signals, the respective communication link (stdout/stderr)
+     * has to be turned on in @ref start().
+     *
+     * @param buffer The data received.
+     * @param buflen The number of bytes that are available.
+     *
+     * You should copy the information contained in @p buffer to your private
+     * data structures before returning from this slot.
+     **/
+    void receivedStdout( Opie::Core::OProcess *proc, char *buffer, int buflen );
+
+    /**
+     * Emitted when output from the child process has
+     * been received on stdout.
+     *
+     * To actually get these signals, the respective communications link
+     * (stdout/stderr) has to be turned on in @ref start() and the
+     * @p NoRead flag should have been passed.
+     *
+     * You will need to explicitly call resume() after your call to start()
+     * to begin processing data from the child process's stdout.  This is
+     * to ensure that this signal is not emitted when no one is connected
+     * to it, otherwise this signal will not be emitted.
+     *
+     * The data still has to be read from file descriptor @p fd.
+     **/
+    void receivedStdout( int fd, int &len );
+
+
+    /**
+     * Emitted, when output from the child process has
+     * been received on stderr.
+     * To actually get
+     * these signals, the respective communication link (stdout/stderr)
+     * has to be turned on in @ref start().
+     *
+     * @param buffer The data received.
+     * @param buflen The number of bytes that are available.
+     *
+     * You should copy the information contained in @p buffer to your private
+     * data structures before returning from this slot.
+    */
+    void receivedStderr( Opie::Core::OProcess *proc, char *buffer, int buflen );
+
+    /**
+     * Emitted after all the data that has been
+     * specified by a prior call to @ref writeStdin() has actually been
+     * written to the child process.
+     **/
+    void wroteStdin( Opie::Core::OProcess *proc );
+
+protected slots:
+
+    /**
+     * This slot gets activated when data from the child's stdout arrives.
+     * It usually calls "childOutput"
+     */
+    void slotChildOutput( int fdno );
+
+    /**
+     * This slot gets activated when data from the child's stderr arrives.
+     * It usually calls "childError"
+     */
+    void slotChildError( int fdno );
+    /*
+    Slot functions for capturing stdout and stderr of the child
+    */
+
+    /**
+     * Called when another bulk of data can be sent to the child's
+     * stdin. If there is no more data to be sent to stdin currently
+     * available, this function must disable the QSocketNotifier "innot".
+     */
+    void slotSendData( int dummy );
+
+protected:
+
+    /**
+     * Sets up the environment according to the data passed via
+     * setEnvironment(...)
+     */
+    void setupEnvironment();
+
+    /**
+     * The list of the process' command line arguments. The first entry
+     * in this list is the executable itself.
+     */
+    QValueList<QCString> arguments;
+    /**
+     * How to run the process (Block, NotifyOnExit, DontCare). You should
+     *  not modify this data member directly from derived classes.
+     */
+    RunMode run_mode;
+    /**
+     * true if the process is currently running. You should not
+     * modify this data member directly from derived classes. For
+     * reading the value of this data member, please use "isRunning()"
+     * since "runs" will probably be made private in later versions
+     * of OProcess.
+     */
+    bool runs;
+
+    /**
+     * The PID of the currently running process (see "getPid()").
+     * You should not modify this data member in derived classes.
+     * Please use "getPid()" instead of directly accessing this
+     * member function since it will probably be made private in
+     * later versions of OProcess.
+     */
+    pid_t pid_;
+
+    /**
+     * The process' exit status as returned by "waitpid". You should not
+     * modify the value of this data member from derived classes. You should
+     * rather use @ref exitStatus than accessing this data member directly
+     * since it will probably be made private in further versions of
+     * OProcess.
+     */
+    int status;
+
+
+    /**
+     * See setRunPrivileged()
+     */
+    bool keepPrivs;
+
+    /*
+    Functions for setting up the sockets for communication.
+    setupCommunication
+    -- is called from "start" before "fork"ing.
+    commSetupDoneP
+    -- completes communication socket setup in the parent
+    commSetupDoneC
+    -- completes communication setup in the child process
+    commClose
+    -- frees all allocated communication resources in the parent
+    after the process has exited
+    */
+
+    /**
+     * This function is called from "OProcess::start" right before a "fork" takes
+     * place. According to
+     * the "comm" parameter this function has to initialize the "in", "out" and
+     * "err" data member of OProcess.
+     *
+     * This function should return 0 if setting the needed communication channels
+     * was successful.
+     *
+     * The default implementation is to create UNIX STREAM sockets for the communication,
+     * but you could overload this function and establish a TCP/IP communication for
+     * network communication, for example.
+     */
+    virtual int setupCommunication( Communication comm );
+
+    /**
+     * Called right after a (successful) fork on the parent side. This function
+     * will usually do some communications cleanup, like closing the reading end
+     * of the "stdin" communication channel.
+     *
+     * Furthermore, it must also create the QSocketNotifiers "innot", "outnot" and
+     * "errnot" and connect their Qt slots to the respective OProcess member functions.
+     *
+     * For a more detailed explanation, it is best to have a look at the default
+     * implementation of "setupCommunication" in kprocess.cpp.
+     */
+    virtual int commSetupDoneP();
+
+    /**
+     * Called right after a (successful) fork, but before an "exec" on the child
+     * process' side. It usually just closes the unused communication ends of
+     * "in", "out" and "err" (like the writing end of the "in" communication
+     * channel.
+     */
+    virtual int commSetupDoneC();
+
+
+    /**
+     * Immediately called after a process has exited. This function normally
+     * calls commClose to close all open communication channels to this
+     * process and emits the "processExited" signal (if the process was
+     * not running in the "DontCare" mode).
+     */
+    virtual void processHasExited( int state );
+
+    /**
+     * Should clean up the communication links to the child after it has
+     * exited. Should be called from "processHasExited".
+     */
+    virtual void commClose();
+
+
+    /**
+     * the socket descriptors for stdin/stdout/stderr.
+     */
+    int out[ 2 ];
+    int in[ 2 ];
+    int err[ 2 ];
+
+    /**
+     * The socket notifiers for the above socket descriptors.
+     */
+    QSocketNotifier *innot;
+    QSocketNotifier *outnot;
+    QSocketNotifier *errnot;
+
+    /**
+     * Lists the communication links that are activated for the child
+     * process.  Should not be modified from derived classes.
+     */
+    Communication communication;
+
+    /**
+     * Called by "slotChildOutput" this function copies data arriving from the
+     * child process's stdout to the respective buffer and emits the signal
+     * "@ref receivedStderr".
+     */
+    int childOutput( int fdno );
+
+    /**
+     * Called by "slotChildOutput" this function copies data arriving from the
+     * child process's stdout to the respective buffer and emits the signal
+     * "@ref receivedStderr"
+     */
+    int childError( int fdno );
+
+    // information about the data that has to be sent to the child:
+
+    const char *input_data;  // the buffer holding the data
+    int input_sent;    // # of bytes already transmitted
+    int input_total;   // total length of input_data
+
+    /**
+     * @ref OProcessController is a friend of OProcess because it has to have
+     * access to various data members.
+     */
+    friend class Internal::OProcessController;
+
+private:
+    /**
+     * Searches for a valid shell.
+     * Here is the algorithm used for finding an executable shell:
+     *
+     *    @li Try the executable pointed to by the "SHELL" environment
+     *    variable with white spaces stripped off
+     *
+     *    @li If your process runs with uid != euid or gid != egid, a shell
+     *    not listed in /etc/shells will not used.
+     *
+     *    @li If no valid shell could be found, "/bin/sh" is used as a last resort.
+     */
+    QCString searchShell();
+
+    /**
+     * Used by @ref searchShell in order to find out whether the shell found
+     * is actually executable at all.
+     */
+    bool isExecutable( const QCString &filename );
+
+    // Disallow assignment and copy-construction
+    OProcess( const OProcess& );
+    OProcess& operator= ( const OProcess& );
+
+private:
+    void init ( );
+    Internal::OProcessPrivate *d;
+};
+}
+}
+
+#endif
+