qirserver.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS and its licensors.
** All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
** See below for additional copyright and license information
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#include "qirserver.h"

#include <qtopia/mimetype.h>
#include <qtopia/qcopenvelope_qws.h>
#include <qtopia/private/task.h>

#include <qsocketnotifier.h>
#include <qfile.h>
#include <qtimer.h>

#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>

#define QTOPIA_DEBUG_OBEX

extern "C" { 
#include "openobex/obex.h"
}

class QObexBase :public QObject
{
    Q_OBJECT;
public:
    QObexBase( QObject *parent = 0, const char *name = 0 );
    ~QObexBase();

signals:
    void error();
    void statusMsg(const QString &);
    void aboutToDelete();

public slots:
    void abort();

protected slots:
    void deleteMeLater();
    void processInput();
    
protected:
    virtual void doPending() = 0;
    void connectSocket();

    obex_t *self;

    bool finished;
    bool aborted;

private slots:
    void deleteThis();
};



QObexBase::QObexBase( QObject *parent , const char *name )
    :QObject( parent, name )
{
    finished = FALSE;
    aborted = FALSE;
}

QObexBase::~QObexBase()
{
    OBEX_Cleanup( self );
}

void QObexBase::connectSocket()
{
    QSocketNotifier *sn = new QSocketNotifier( OBEX_GetFD( self ),
					       QSocketNotifier::Read,
					       this );
    connect( sn, SIGNAL(activated(int)), this, SLOT(processInput()) );
}


void QObexBase::deleteMeLater()
{
    QTimer::singleShot( 0, this, SLOT(deleteThis()) );
}


void QObexBase::deleteThis()
{
    emit aboutToDelete();
    delete this;
}

void QObexBase::abort()
{
    aborted = TRUE;
    finished = TRUE;
}


void QObexBase::processInput()
{
    if ( !aborted )
	OBEX_HandleInput( self, 0 );

    if ( aborted )
	deleteMeLater();
    if ( finished )
	doPending();
}

static void qobex_sender_callback(obex_t *handle, obex_object_t *obj, int mode, int event, int obex_cmd, int obex_rsp);

class QObexSender : public QObexBase
{
    Q_OBJECT;
public:
    QObexSender( QObject *parent = 0, const char *name = 0 );
    ~QObexSender();

    void beam( const QString& filename, const QString& mimetype );

signals:
    void done();
    void progress(int);

private slots:
    void tryConnecting(); 

private:
    friend void qobex_sender_callback(obex_t *handle, obex_object_t *obj, int mode, int event, int obex_cmd, int obex_rsp);

    enum State { Init, Connecting, Streaming,   
		 Disconnecting, Error };

    void process( obex_object_t *object ) {

	if( object && OBEX_Request(self, object) < 0) {
	    /* Error */
	    qWarning( "could not request" );
	    state = Error;
	    finished = TRUE;
        } else {
	  finished = FALSE;
	}
    }

    void feedStream( obex_object_t *);
    void updateProgress( obex_object_t *);

    void doPending();

    void putFile( const QString&, const QString& );

    QString file_to_send;
    QString mime_to_send;
    QFile *file_being_sent;

    State state;

    int connectCount;
};

class QObexReceiver;

static void qobex_server_callback(obex_t *handle, obex_object_t *object, int mode, int event, int obex_cmd, int obex_rsp);

class QObexServer : public QObexBase
{
  friend void qobex_server_callback(obex_t *handle, obex_object_t *object, int mode, int event, int obex_cmd, int obex_rs);
  Q_OBJECT;
public:
  QObexServer( QObject *parent = 0, const char *name = 0 );
  ~QObexServer();

protected:
    void doPending();


private slots:
    void slotReceiving(bool);	
    void sessionEnded();
    void finishedReceive();

signals:
    void receiving(bool);

private:
    QTimer *m_timer;
    QObexReceiver *m_receiver;
    bool m_receiving;

    void spawnReceiver( obex_t *handle );

    enum State { Init, Connecting, Receiving,   
		 Disconnecting, Finished, Error, Aborted };

    State state;
};





static void qobex_receiver_callback(obex_t *handle, obex_object_t *object, int mode, int event, int obex_cmd, int obex_rsp);

class QObexReceiver : public QObexBase
{
    Q_OBJECT;
public:
    QObexReceiver( obex_t *handle, QObject *parent = 0, const char *name = 0 );
    ~QObexReceiver();

    //a link error finish is a successful finish of a beamed file
    //but terminates with a LINKERR message. some phones do this
    //and create an obex session for each file they want to send
   //sending a link error after each 
    bool linkErrFinish() const { return m_linkErrFinish; }
protected:
    void doPending();

signals:
    void receiving(bool);
    void receiving( int size, const QString & name, const QString & mime );
    void progress( int size );
    void fileComplete();
    //void received( const QString & name, const QString & mime );
    //there is no easy way to emit this signal inbetween sends without
    //screwing devices like the S45 which are tempremental over timing
    //don't need it anyway

private:
    friend void qobex_receiver_callback(obex_t *handle, obex_object_t *object, int mode, int event, int obex_cmd, int obex_rsp);

    enum State { Init, Connecting, Receiving,   
		 Disconnecting, Finished, Error, Aborted };

    void readData( obex_object_t *);
    void updateProgress( obex_object_t *);
    void getHeaders( obex_object_t *object );

    State state;

    QString filename;
    QString mimetype;
    int reclen;
    bool m_linkErrFinish;

    QFile outfile;
};









/*

  QObexSender functions


 */












void QObexSender::feedStream( obex_object_t *object )
{
    static char buf[4096];

    ASSERT( state == Streaming &&  file_being_sent );

    obex_headerdata_t hd;


    int len = file_being_sent->readBlock( buf, 4096 );

    if ( len > 0 ) {
	hd.bs = (uchar*)buf;
	OBEX_ObjectAddHeader(self, object, OBEX_HDR_BODY,
			     hd, len, OBEX_FL_STREAM_DATA);
    } else {
	/* EOF */
	hd.bs = 0;
	OBEX_ObjectAddHeader(self, object, OBEX_HDR_BODY,
			     hd, 0, OBEX_FL_STREAM_DATAEND);


	file_being_sent->close();
	delete file_being_sent;
	file_being_sent = 0;
    }
 }

void QObexSender::updateProgress( obex_object_t * /* obj */)
{
    emit progress( file_being_sent->at() );
}

static bool hasTasks( const QString &filename )
{
    QValueList<Task> tasks = Task::readVCalendar( filename );
    return tasks.count();
}

void QObexSender::putFile( const QString &filename, const QString& mimetype )
{

    obex_headerdata_t hd;
        
    obex_object_t *object = OBEX_ObjectNew(self, OBEX_CMD_PUT);
    if (object == NULL) {
	/* Error */
	qWarning( "null object" );
	state = Error;
	finished = TRUE;
	return;
    }

    file_being_sent = new QFile( filename );
    if ( file_being_sent->open(IO_ReadOnly) ) {

	int body_size = file_being_sent->size();
        
	/* Add length header */
	hd.bq4 = body_size;
	OBEX_ObjectAddHeader(self, object,
			     OBEX_HDR_LENGTH, hd, 4, 0);
        
	/* Add type header */
	hd.bs = (uchar*)mimetype.latin1();
	OBEX_ObjectAddHeader(self, object,
			     OBEX_HDR_TYPE, hd, mimetype.length()+1, 0);
        
	/* Add PalmOS-style application id header */
	// ####### if more PalmOS applications have this problem,
	// ####### a more general solution is required.
	if ( mimetype == "text/x-vCalendar" ) {
	    if ( hasTasks( filename ) )
		hd.bq4 = 0x746F646F; // "todo"
	    else
		hd.bq4 = 0x64617465; // "date"
	    OBEX_ObjectAddHeader(self, object, 0xcf, hd, 4, 0);
	}
        
	/* Add unicode name header*/
	
	QString uc = filename + QChar( 0x0 );
	uc = uc.mid( uc.findRev("/")+1 );
	int name_size = uc.length() * 2;

	hd.bs = (uchar*) uc.unicode();
	OBEX_ObjectAddHeader(self, object,
			     OBEX_HDR_NAME, hd, name_size, 0);

	state = Streaming;

	hd.bs = 0;
	OBEX_ObjectAddHeader(self, object, OBEX_HDR_BODY,
			     hd, 0, OBEX_FL_STREAM_START);
	process( object );
    }

}




static bool transmitDone = FALSE;

void QObexSender::doPending()
{
#ifdef QTOPIA_DEBUG_OBEX
    qDebug( "QObexSender::doPending %d", state );
#endif

    if ( state == Connecting ) {
#ifdef QTOPIA_DEBUG_OBEX
	qDebug( "state Connecting" );
#endif
	// finished connecting; time to send

	putFile( file_to_send, mime_to_send );
	file_to_send = QString::null;

    } else if ( state == Streaming ) {
#ifdef QTOPIA_DEBUG_OBEX
	qDebug( "state Streaming" );
#endif
	//finished streaming

	obex_object_t *object = OBEX_ObjectNew(self, OBEX_CMD_DISCONNECT);
	process( object );
	state = Disconnecting;
    } else if ( state == Disconnecting ) {
#ifdef QTOPIA_DEBUG_OBEX
	qDebug( "state Disconnecting" );
#endif

	OBEX_TransportDisconnect(self);
	state = Init;
	emit done();
	deleteMeLater();

    }
}


static void qobex_sender_callback(obex_t *handle, obex_object_t *obj, int mode, int event, int obex_cmd, int obex_rsp)
{
    QObexSender *sender = (QObexSender*)OBEX_GetUserData( handle );

#ifdef QTOPIA_DEBUG_OBEX
    qDebug( "qobex_sender_callback %p, %p, %p, %d, event %x, cmd %x, rsp %x",
       sender, handle, obj, mode, event, obex_cmd, obex_rsp );
#else
    Q_UNUSED(mode);
    Q_UNUSED(obex_rsp);
#endif

    switch (event) {
    case OBEX_EV_REQDONE:
#ifdef QTOPIA_DEBUG_OBEX
	qDebug("OBEX_EV_REQDONE");
#endif
	sender->finished = TRUE;
	if ( obex_cmd == OBEX_CMD_DISCONNECT ) {
	    transmitDone = TRUE;
	}
	// else if OBEX_CMD_CONNECT, we could give feedback
	break;

    case OBEX_EV_LINKERR:
#ifdef QTOPIA_DEBUG_OBEX
	qDebug("OBEX_EV_LINKRER");
#endif
	// sometime we get a link error after we believed the connection was done.  Ignore this
	// as emitting an error after done does not make sense
	if ( !transmitDone ) {
	    emit sender->error();
	    sender->abort();
	    sender->state = QObexSender::Error;
	} else {
	    sender->abort();
#ifdef QTOPIA_DEBUG_OBEX
	    qDebug("QIrServer:: got link error after done signal, no external signals sent");
#endif
	}
	
	break;

    case OBEX_EV_PROGRESS:
#ifdef QTOPIA_DEBUG_OBEX
	qDebug("OBEX_EV_PROGRESS");
#endif
	// report progress?
	sender->updateProgress( obj );
	break;

	
    case OBEX_EV_STREAMEMPTY:
#ifdef QTOPIA_DEBUG_OBEX
	qDebug("OBEX_EV_STREAMEMPTY");
#endif
	// when streaming: add more
	sender->feedStream( obj );
	break;
	
    default:
#ifdef QTOPIA_DEBUG_OBEX
	qDebug("qobex_sender_callback:: did not recongnize event signal %d", event);
#endif
	break;
    }
}


QObexSender::QObexSender( QObject *parent, const char *name )
  :QObexBase( parent, name )
{

  self = OBEX_Init( OBEX_TRANS_IRDA, qobex_sender_callback, OBEX_FL_KEEPSERVER );
  finished = FALSE;
  state = QObexSender::Init;
  OBEX_SetUserData( self, this );
}

QObexSender::~QObexSender()
{
}





void QObexSender::beam( const QString& filename, const QString& mimetype )
{
    file_to_send = filename;
    mime_to_send = mimetype;
    transmitDone = FALSE;

    connectCount = 0;
    tryConnecting();
}



void QObexSender::tryConnecting()
{
    connectCount++;

    if ( aborted ) { deleteMeLater();
	return;
    }
	
    int retc = IrOBEX_TransportConnect(self, "OBEX");

    if ( retc < 0 ) {
	const int normalTry = 5;
	const int maxTry = 20;
	if ( connectCount > maxTry ) {
	    abort();
	    emit error();
	    deleteMeLater();
	} else {
	    QString str;
	    if ( connectCount <= normalTry )
		str = tr("Searching...");
	    else
		str = tr("Beam failed (%1/%2). Retrying...","eg. 1/3").arg(connectCount).arg(maxTry);
	    emit statusMsg( str );
	    // Semi-random retry time to avoid re-collision
	    QTimer::singleShot(200 + rand()%400, this, SLOT(tryConnecting()) );
	}
	return;
    }
#ifdef QTOPIA_DEBUG_OBEX
    qDebug("QObexSender::tryConnecting() - Success");
#endif

    QString str = tr("Sending...");
    emit statusMsg( str );

    connectSocket();

    obex_object_t *object;

    // connecting
    object = OBEX_ObjectNew(self, OBEX_CMD_CONNECT);


    state = QObexSender::Connecting;

    process( object );
}

//-----------------------------------------------------------------------

/*

  QObexServer /  functions

*/