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qt3/src/network/qftp.cpp

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66 KiB

/****************************************************************************
**
** Implementation of QFtp class.
**
** Created : 970521
**
** Copyright (C) 1997-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the network module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "qftp.h"
#ifndef QT_NO_NETWORKPROTOCOL_FTP
#include "qsocket.h"
#include "qsocketdevice.h"
#include "qurlinfo.h"
#include "qurloperator.h"
#include "qstringlist.h"
#include "qregexp.h"
#include "qtimer.h"
#include "qfileinfo.h"
#include "qptrdict.h" // binary compatibility
#ifndef QT_NO_TEXTCODEC
#include "qtextcodec.h"
#endif
//#define QFTPPI_DEBUG
//#define QFTPDTP_DEBUG
class QFtpPI;
class QFtpDTP : public QObject
{
Q_OBJECT
public:
enum ConnectState {
CsHostFound,
CsConnected,
CsClosed,
CsHostNotFound,
CsConnectionRefused
};
QFtpDTP( QFtpPI *p, QObject *parent=0, const char *name=0 );
void setData( QByteArray * );
void setDevice( QIODevice * );
void writeData();
void setBytesTotal( int bytes )
{
bytesTotal = bytes;
bytesDone = 0;
emit dataTransferProgress( bytesDone, bytesTotal );
}
bool hasError() const;
QString errorMessage() const;
void clearError();
void connectToHost( const QString & host, Q_UINT16 port )
{ socket.connectToHost( host, port ); }
QSocket::State socketState() const
{ return socket.state(); }
Q_ULONG bytesAvailable() const
{ return socket.bytesAvailable(); }
Q_LONG readBlock( char *data, Q_ULONG maxlen )
{
Q_LONG read = socket.readBlock( data, maxlen );
bytesDone += read;
return read;
}
QByteArray readAll()
{
QByteArray tmp = socket.readAll();
bytesDone += tmp.size();
return tmp;
}
void abortConnection();
static bool parseDir( const QString &buffer, const QString &userName, QUrlInfo *info );
signals:
void listInfo( const QUrlInfo& );
void readyRead();
void dataTransferProgress( int, int );
void connectState( int );
private slots:
void socketConnected();
void socketReadyRead();
void socketError( int );
void socketConnectionClosed();
void socketBytesWritten( int );
private:
void clearData()
{
is_ba = FALSE;
data.dev = 0;
}
QSocket socket;
QFtpPI *pi;
QString err;
int bytesDone;
int bytesTotal;
bool callWriteData;
// If is_ba is TRUE, ba is used; ba is never 0.
// Otherwise dev is used; dev can be 0 or not.
union {
QByteArray *ba;
QIODevice *dev;
} data;
bool is_ba;
};
class QFtpPI : public QObject
{
Q_OBJECT
public:
QFtpPI( QObject *parent = 0 );
void connectToHost( const QString &host, Q_UINT16 port );
bool sendCommands( const QStringList &cmds );
bool sendCommand( const QString &cmd )
{ return sendCommands( QStringList( cmd ) ); }
void clearPendingCommands();
void abort();
QString currentCommand() const
{ return currentCmd; }
bool rawCommand;
QFtpDTP dtp; // the PI has a DTP which is not the design of RFC 959, but it
// makes the design simpler this way
signals:
void connectState( int );
void finished( const QString& );
void error( int, const QString& );
void rawFtpReply( int, const QString& );
private slots:
void hostFound();
void connected();
void connectionClosed();
void delayedCloseFinished();
void readyRead();
void error( int );
void dtpConnectState( int );
private:
// the states are modelled after the generalized state diagram of RFC 959,
// page 58
enum State {
Begin,
Idle,
Waiting,
Success,
Failure
};
enum AbortState {
None,
AbortStarted,
WaitForAbortToFinish
};
bool processReply();
bool startNextCmd();
QSocket commandSocket;
QString replyText;
char replyCode[3];
State state;
AbortState abortState;
QStringList pendingCommands;
QString currentCmd;
bool waitForDtpToConnect;
bool waitForDtpToClose;
};
/**********************************************************************
*
* QFtpCommand implemenatation
*
*********************************************************************/
class QFtpCommand
{
public:
QFtpCommand( QFtp::Command cmd, QStringList raw );
QFtpCommand( QFtp::Command cmd, QStringList raw, const QByteArray &ba );
QFtpCommand( QFtp::Command cmd, QStringList raw, QIODevice *dev );
~QFtpCommand();
int id;
QFtp::Command command;
QStringList rawCmds;
// If is_ba is TRUE, ba is used; ba is never 0.
// Otherwise dev is used; dev can be 0 or not.
union {
QByteArray *ba;
QIODevice *dev;
} data;
bool is_ba;
static int idCounter;
};
int QFtpCommand::idCounter = 0;
QFtpCommand::QFtpCommand( QFtp::Command cmd, QStringList raw )
: command(cmd), rawCmds(raw), is_ba(FALSE)
{
id = ++idCounter;
data.dev = 0;
}
QFtpCommand::QFtpCommand( QFtp::Command cmd, QStringList raw, const QByteArray &ba )
: command(cmd), rawCmds(raw), is_ba(TRUE)
{
id = ++idCounter;
data.ba = new QByteArray( ba );
}
QFtpCommand::QFtpCommand( QFtp::Command cmd, QStringList raw, QIODevice *dev )
: command(cmd), rawCmds(raw), is_ba(FALSE)
{
id = ++idCounter;
data.dev = dev;
}
QFtpCommand::~QFtpCommand()
{
if ( is_ba )
delete data.ba;
}
/**********************************************************************
*
* QFtpDTP implemenatation
*
*********************************************************************/
QFtpDTP::QFtpDTP( QFtpPI *p, QObject *parent, const char *name ) :
QObject( parent, name ),
socket( 0, "QFtpDTP_socket" ),
pi( p ),
callWriteData( FALSE )
{
clearData();
connect( &socket, SIGNAL( connected() ),
SLOT( socketConnected() ) );
connect( &socket, SIGNAL( readyRead() ),
SLOT( socketReadyRead() ) );
connect( &socket, SIGNAL( error(int) ),
SLOT( socketError(int) ) );
connect( &socket, SIGNAL( connectionClosed() ),
SLOT( socketConnectionClosed() ) );
connect( &socket, SIGNAL( bytesWritten(int) ),
SLOT( socketBytesWritten(int) ) );
}
void QFtpDTP::setData( QByteArray *ba )
{
is_ba = TRUE;
data.ba = ba;
}
void QFtpDTP::setDevice( QIODevice *dev )
{
is_ba = FALSE;
data.dev = dev;
}
void QFtpDTP::writeData()
{
if ( is_ba ) {
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::writeData: write %d bytes", data.ba->size() );
#endif
if ( data.ba->size() == 0 )
emit dataTransferProgress( 0, bytesTotal );
else
socket.writeBlock( data.ba->data(), data.ba->size() );
socket.close();
clearData();
} else if ( data.dev ) {
callWriteData = FALSE;
const int blockSize = 16*1024;
char buf[blockSize];
while ( !data.dev->atEnd() && socket.bytesToWrite()==0 ) {
Q_LONG read = data.dev->readBlock( buf, blockSize );
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::writeData: writeBlock() of size %d bytes", (int)read );
#endif
socket.writeBlock( buf, read );
if ( !data.dev )
return; // this can happen when a command is aborted
}
if ( data.dev->atEnd() ) {
if ( bytesDone==0 && socket.bytesToWrite()==0 )
emit dataTransferProgress( 0, bytesTotal );
socket.close();
clearData();
} else {
callWriteData = TRUE;
}
}
}
inline bool QFtpDTP::hasError() const
{
return !err.isNull();
}
inline QString QFtpDTP::errorMessage() const
{
return err;
}
inline void QFtpDTP::clearError()
{
err = QString::null;
}
void QFtpDTP::abortConnection()
{
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::abortConnection" );
#endif
callWriteData = FALSE;
clearData();
socket.clearPendingData();
socket.close();
}
bool QFtpDTP::parseDir( const QString &buffer, const QString &userName, QUrlInfo *info )
{
QStringList lst = QStringList::split( " ", buffer );
if ( lst.count() < 9 )
return FALSE;
QString tmp;
// permissions
tmp = lst[ 0 ];
if ( tmp[ 0 ] == QChar( 'd' ) ) {
info->setDir( TRUE );
info->setFile( FALSE );
info->setSymLink( FALSE );
} else if ( tmp[ 0 ] == QChar( '-' ) ) {
info->setDir( FALSE );
info->setFile( TRUE );
info->setSymLink( FALSE );
} else if ( tmp[ 0 ] == QChar( 'l' ) ) {
info->setDir( TRUE ); // #### todo
info->setFile( FALSE );
info->setSymLink( TRUE );
} else {
return FALSE;
}
static int user = 0;
static int group = 1;
static int other = 2;
static int readable = 0;
static int writable = 1;
static int executable = 2;
bool perms[ 3 ][ 3 ];
perms[0][0] = (tmp[ 1 ] == 'r');
perms[0][1] = (tmp[ 2 ] == 'w');
perms[0][2] = (tmp[ 3 ] == 'x');
perms[1][0] = (tmp[ 4 ] == 'r');
perms[1][1] = (tmp[ 5 ] == 'w');
perms[1][2] = (tmp[ 6 ] == 'x');
perms[2][0] = (tmp[ 7 ] == 'r');
perms[2][1] = (tmp[ 8 ] == 'w');
perms[2][2] = (tmp[ 9 ] == 'x');
// owner
tmp = lst[ 2 ];
info->setOwner( tmp );
// group
tmp = lst[ 3 ];
info->setGroup( tmp );
// ### not correct
info->setWritable( ( userName == info->owner() && perms[ user ][ writable ] ) ||
perms[ other ][ writable ] );
info->setReadable( ( userName == info->owner() && perms[ user ][ readable ] ) ||
perms[ other ][ readable ] );
int p = 0;
if ( perms[ user ][ readable ] )
p |= QUrlInfo::ReadOwner;
if ( perms[ user ][ writable ] )
p |= QUrlInfo::WriteOwner;
if ( perms[ user ][ executable ] )
p |= QUrlInfo::ExeOwner;
if ( perms[ group ][ readable ] )
p |= QUrlInfo::ReadGroup;
if ( perms[ group ][ writable ] )
p |= QUrlInfo::WriteGroup;
if ( perms[ group ][ executable ] )
p |= QUrlInfo::ExeGroup;
if ( perms[ other ][ readable ] )
p |= QUrlInfo::ReadOther;
if ( perms[ other ][ writable ] )
p |= QUrlInfo::WriteOther;
if ( perms[ other ][ executable ] )
p |= QUrlInfo::ExeOther;
info->setPermissions( p );
// size
tmp = lst[ 4 ];
info->setSize( tmp.toInt() );
// date and time
QTime time;
QString dateStr;
dateStr += "Sun ";
lst[ 5 ][ 0 ] = lst[ 5 ][ 0 ].upper();
dateStr += lst[ 5 ];
dateStr += ' ';
dateStr += lst[ 6 ];
dateStr += ' ';
if ( lst[ 7 ].contains( ":" ) ) {
time = QTime( lst[ 7 ].left( 2 ).toInt(), lst[ 7 ].right( 2 ).toInt() );
dateStr += QString::number( QDate::currentDate().year() );
} else {
dateStr += lst[ 7 ];
}
QDate date = QDate::fromString( dateStr );
info->setLastModified( QDateTime( date, time ) );
if ( lst[ 7 ].contains( ":" ) ) {
const int futureTolerance = 600;
if( info->lastModified().secsTo( QDateTime::currentDateTime() ) < -futureTolerance ) {
QDateTime dt = info->lastModified();
QDate d = dt.date();
d.setYMD(d.year()-1, d.month(), d.day());
dt.setDate(d);
info->setLastModified(dt);
}
}
// name
if ( info->isSymLink() )
info->setName( lst[ 8 ].stripWhiteSpace() );
else {
QString n;
for ( uint i = 8; i < lst.count(); ++i )
n += lst[ i ] + " ";
n = n.stripWhiteSpace();
info->setName( n );
}
return TRUE;
}
void QFtpDTP::socketConnected()
{
#if !defined (Q_WS_QWS)
// Use a large send buffer to reduce the number
// of writeBlocks when download and uploading files.
// The actual size used here (128k) is default on most
// Unixes.
socket.socketDevice()->setSendBufferSize(128 * 1024);
socket.socketDevice()->setReceiveBufferSize(128 * 1024);
#endif
bytesDone = 0;
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::connectState( CsConnected )" );
#endif
emit connectState( QFtpDTP::CsConnected );
}
void QFtpDTP::socketReadyRead()
{
if ( pi->currentCommand().isEmpty() ) {
socket.close();
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::connectState( CsClosed )" );
#endif
emit connectState( QFtpDTP::CsClosed );
return;
}
if ( pi->currentCommand().startsWith("LIST") ) {
while ( socket.canReadLine() ) {
QUrlInfo i;
QString line = socket.readLine();
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP read (list): '%s'", line.latin1() );
#endif
if ( parseDir( line, "", &i ) ) {
emit listInfo( i );
} else {
// some FTP servers don't return a 550 if the file or directory
// does not exist, but rather write a text to the data socket
// -- try to catch these cases
if ( line.endsWith( "No such file or directory\r\n" ) )
err = line;
}
}
} else {
if ( !is_ba && data.dev ) {
QByteArray ba( socket.bytesAvailable() );
Q_LONG bytesRead = socket.readBlock( ba.data(), ba.size() );
if ( bytesRead < 0 ) {
// ### error handling
return;
}
ba.resize( bytesRead );
bytesDone += bytesRead;
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP read: %d bytes (total %d bytes)", (int)bytesRead, bytesDone );
#endif
emit dataTransferProgress( bytesDone, bytesTotal );
if (data.dev) // make sure it wasn't deleted in the slot
data.dev->writeBlock( ba );
} else {
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP readyRead: %d bytes available (total %d bytes read)", (int)bytesAvailable(), bytesDone );
#endif
emit dataTransferProgress( bytesDone+socket.bytesAvailable(), bytesTotal );
emit readyRead();
}
}
}
void QFtpDTP::socketError( int e )
{
if ( e == QSocket::ErrHostNotFound ) {
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::connectState( CsHostNotFound )" );
#endif
emit connectState( QFtpDTP::CsHostNotFound );
} else if ( e == QSocket::ErrConnectionRefused ) {
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::connectState( CsConnectionRefused )" );
#endif
emit connectState( QFtpDTP::CsConnectionRefused );
}
}
void QFtpDTP::socketConnectionClosed()
{
if ( !is_ba && data.dev ) {
clearData();
}
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::connectState( CsClosed )" );
#endif
emit connectState( QFtpDTP::CsClosed );
}
void QFtpDTP::socketBytesWritten( int bytes )
{
bytesDone += bytes;
#if defined(QFTPDTP_DEBUG)
tqDebug( "QFtpDTP::bytesWritten( %d )", bytesDone );
#endif
emit dataTransferProgress( bytesDone, bytesTotal );
if ( callWriteData )
writeData();
}
/**********************************************************************
*
* QFtpPI implemenatation
*
*********************************************************************/
QFtpPI::QFtpPI( QObject *parent ) :
QObject( parent ),
rawCommand(FALSE),
dtp( this ),
commandSocket( 0, "QFtpPI_socket" ),
state( Begin ), abortState( None ),
currentCmd( QString::null ),
waitForDtpToConnect( FALSE ),
waitForDtpToClose( FALSE )
{
connect( &commandSocket, SIGNAL(hostFound()),
SLOT(hostFound()) );
connect( &commandSocket, SIGNAL(connected()),
SLOT(connected()) );
connect( &commandSocket, SIGNAL(connectionClosed()),
SLOT(connectionClosed()) );
connect( &commandSocket, SIGNAL(delayedCloseFinished()),
SLOT(delayedCloseFinished()) );
connect( &commandSocket, SIGNAL(readyRead()),
SLOT(readyRead()) );
connect( &commandSocket, SIGNAL(error(int)),
SLOT(error(int)) );
connect( &dtp, SIGNAL(connectState(int)),
SLOT(dtpConnectState(int)) );
}
void QFtpPI::connectToHost( const QString &host, Q_UINT16 port )
{
emit connectState( QFtp::HostLookup );
commandSocket.connectToHost( host, port );
}
/*
Sends the sequence of commands \a cmds to the FTP server. When the commands
are all done the finished() signal is emitted. When an error occurs, the
error() signal is emitted.
If there are pending commands in the queue this functions returns FALSE and
the \a cmds are not added to the queue; otherwise it returns TRUE.
*/
bool QFtpPI::sendCommands( const QStringList &cmds )
{
if ( !pendingCommands.isEmpty() )
return FALSE;
if ( commandSocket.state()!=QSocket::Connected || state!=Idle ) {
emit error( QFtp::NotConnected, QFtp::tr( "Not connected" ) );
return TRUE; // there are no pending commands
}
pendingCommands = cmds;
startNextCmd();
return TRUE;
}
void QFtpPI::clearPendingCommands()
{
pendingCommands.clear();
dtp.abortConnection();
currentCmd = QString::null;
state = Idle;
}
void QFtpPI::abort()
{
pendingCommands.clear();
if ( abortState != None )
// ABOR already sent
return;
abortState = AbortStarted;
#if defined(QFTPPI_DEBUG)
tqDebug( "QFtpPI send: ABOR" );
#endif
commandSocket.writeBlock( "ABOR\r\n", 6 );
if ( currentCmd.startsWith("STOR ") )
dtp.abortConnection();
}
void QFtpPI::hostFound()
{
emit connectState( QFtp::Connecting );
}
void QFtpPI::connected()
{
state = Begin;
#if defined(QFTPPI_DEBUG)
// tqDebug( "QFtpPI state: %d [connected()]", state );
#endif
emit connectState( QFtp::Connected );
}
void QFtpPI::connectionClosed()
{
commandSocket.close();
emit connectState( QFtp::Unconnected );
}
void QFtpPI::delayedCloseFinished()
{
emit connectState( QFtp::Unconnected );
}
void QFtpPI::error( int e )
{
if ( e == QSocket::ErrHostNotFound ) {
emit connectState( QFtp::Unconnected );
emit error( QFtp::HostNotFound,
QFtp::tr( "Host %1 not found" ).arg( commandSocket.peerName() ) );
} else if ( e == QSocket::ErrConnectionRefused ) {
emit connectState( QFtp::Unconnected );
emit error( QFtp::ConnectionRefused,
QFtp::tr( "Connection refused to host %1" ).arg( commandSocket.peerName() ) );
}
}
void QFtpPI::readyRead()
{
if ( waitForDtpToClose )
return;
while ( commandSocket.canReadLine() ) {
// read line with respect to line continuation
QString line = commandSocket.readLine();
if ( replyText.isEmpty() ) {
if ( line.length() < 3 ) {
// ### protocol error
return;
}
const int lowerLimit[3] = {1,0,0};
const int upperLimit[3] = {5,5,9};
for ( int i=0; i<3; i++ ) {
replyCode[i] = line[i].digitValue();
if ( replyCode[i]<lowerLimit[i] || replyCode[i]>upperLimit[i] ) {
// ### protocol error
return;
}
}
}
QString endOfMultiLine;
endOfMultiLine[0] = '0' + replyCode[0];
endOfMultiLine[1] = '0' + replyCode[1];
endOfMultiLine[2] = '0' + replyCode[2];
endOfMultiLine[3] = ' ';
QString lineCont( endOfMultiLine );
lineCont[3] = '-';
QString lineLeft4 = line.left(4);
while ( lineLeft4 != endOfMultiLine ) {
if ( lineLeft4 == lineCont )
replyText += line.mid( 4 ); // strip 'xyz-'
else
replyText += line;
if ( !commandSocket.canReadLine() )
return;
line = commandSocket.readLine();
lineLeft4 = line.left(4);
}
replyText += line.mid( 4 ); // strip reply code 'xyz '
if ( replyText.endsWith("\r\n") )
replyText.truncate( replyText.length()-2 );
if ( processReply() )
replyText = "";
}
}
/*
Process a reply from the FTP server.
Returns TRUE if the reply was processed or FALSE if the reply has to be
processed at a later point.
*/
bool QFtpPI::processReply()
{
#if defined(QFTPPI_DEBUG)
// tqDebug( "QFtpPI state: %d [processReply() begin]", state );
if ( replyText.length() < 400 )
tqDebug( "QFtpPI recv: %d %s", 100*replyCode[0]+10*replyCode[1]+replyCode[2], replyText.latin1() );
else
tqDebug( "QFtpPI recv: %d (text skipped)", 100*replyCode[0]+10*replyCode[1]+replyCode[2] );
#endif
// process 226 replies ("Closing Data Connection") only when the data
// connection is really closed to avoid short reads of the DTP
if ( 100*replyCode[0]+10*replyCode[1]+replyCode[2] == 226 ) {
if ( dtp.socketState() != QSocket::Idle ) {
waitForDtpToClose = TRUE;
return FALSE;
}
}
switch ( abortState ) {
case AbortStarted:
abortState = WaitForAbortToFinish;
break;
case WaitForAbortToFinish:
abortState = None;
return TRUE;
default:
break;
}
// get new state
static const State table[5] = {
/* 1yz 2yz 3yz 4yz 5yz */
Waiting, Success, Idle, Failure, Failure
};
switch ( state ) {
case Begin:
if ( replyCode[0] == 1 ) {
return TRUE;
} else if ( replyCode[0] == 2 ) {
state = Idle;
emit finished( QFtp::tr( "Connected to host %1" ).arg( commandSocket.peerName() ) );
break;
}
// ### error handling
return TRUE;
case Waiting:
if ( replyCode[0]<0 || replyCode[0]>5 )
state = Failure;
else
state = table[ replyCode[0] - 1 ];
break;
default:
// ### spontaneous message
return TRUE;
}
#if defined(QFTPPI_DEBUG)
// tqDebug( "QFtpPI state: %d [processReply() intermediate]", state );
#endif
// special actions on certain replies
int replyCodeInt = 100*replyCode[0] + 10*replyCode[1] + replyCode[2];
emit rawFtpReply( replyCodeInt, replyText );
if ( rawCommand ) {
rawCommand = FALSE;
} else if ( replyCodeInt == 227 ) {
// 227 Entering Passive Mode (h1,h2,h3,h4,p1,p2)
// rfc959 does not define this response precisely, and gives
// both examples where the parenthesis are used, and where
// they are missing. We need to scan for the address and host
// info.
QRegExp addrPortPattern("(\\d+),(\\d+),(\\d+),(\\d+),(\\d+),(\\d+)");
if (addrPortPattern.search(replyText) == -1) {
#if defined(QFTPPI_DEBUG)
tqDebug( "QFtp: bad 227 response -- address and port information missing" );
#endif
// ### error handling
} else {
QStringList lst = addrPortPattern.capturedTexts();
QString host = lst[1] + "." + lst[2] + "." + lst[3] + "." + lst[4];
Q_UINT16 port = ( lst[5].toUInt() << 8 ) + lst[6].toUInt();
waitForDtpToConnect = TRUE;
dtp.connectToHost( host, port );
}
} else if ( replyCodeInt == 230 ) {
if ( currentCmd.startsWith("USER ") && pendingCommands.count()>0 &&
pendingCommands.first().startsWith("PASS ") ) {
// no need to send the PASS -- we are already logged in
pendingCommands.pop_front();
}
// 230 User logged in, proceed.
emit connectState( QFtp::LoggedIn );
} else if ( replyCodeInt == 213 ) {
// 213 File status.
if ( currentCmd.startsWith("SIZE ") )
dtp.setBytesTotal( replyText.simplifyWhiteSpace().toInt() );
} else if ( replyCode[0]==1 && currentCmd.startsWith("STOR ") ) {
dtp.writeData();
}
// react on new state
switch ( state ) {
case Begin:
// ### should never happen
break;
case Success:
// ### success handling
state = Idle;
// no break!
case Idle:
if ( dtp.hasError() ) {
emit error( QFtp::UnknownError, dtp.errorMessage() );
dtp.clearError();
}
startNextCmd();
break;
case Waiting:
// ### do nothing
break;
case Failure:
emit error( QFtp::UnknownError, replyText );
state = Idle;
startNextCmd();
break;
}
#if defined(QFTPPI_DEBUG)
// tqDebug( "QFtpPI state: %d [processReply() end]", state );
#endif
return TRUE;
}
#ifndef QT_NO_TEXTCODEC
QM_EXPORT_FTP QTextCodec *qt_ftp_filename_codec = 0;
#endif
/*
Starts next pending command. Returns FALSE if there are no pending commands,
otherwise it returns TRUE.
*/
bool QFtpPI::startNextCmd()
{
if ( waitForDtpToConnect )
// don't process any new commands until we are connected
return TRUE;
#if defined(QFTPPI_DEBUG)
if ( state != Idle )
tqDebug( "QFtpPI startNextCmd: Internal error! QFtpPI called in non-Idle state %d", state );
#endif
if ( pendingCommands.isEmpty() ) {
currentCmd = QString::null;
emit finished( replyText );
return FALSE;
}
currentCmd = pendingCommands.first();
pendingCommands.pop_front();
#if defined(QFTPPI_DEBUG)
tqDebug( "QFtpPI send: %s", currentCmd.left( currentCmd.length()-2 ).latin1() );
#endif
state = Waiting;
#ifndef QT_NO_TEXTCODEC
if ( qt_ftp_filename_codec ) {
int len = 0;
QCString enc = qt_ftp_filename_codec->fromUnicode(currentCmd,len);
commandSocket.writeBlock( enc.data(), len );
} else
#endif
{
commandSocket.writeBlock( currentCmd.latin1(), currentCmd.length() );
}
return TRUE;
}
void QFtpPI::dtpConnectState( int s )
{
switch ( s ) {
case QFtpDTP::CsClosed:
if ( waitForDtpToClose ) {
// there is an unprocessed reply
if ( processReply() )
replyText = "";
else
return;
}
waitForDtpToClose = FALSE;
readyRead();
return;
case QFtpDTP::CsConnected:
waitForDtpToConnect = FALSE;
startNextCmd();
return;
case QFtpDTP::CsHostNotFound:
case QFtpDTP::CsConnectionRefused:
emit error( QFtp::ConnectionRefused,
QFtp::tr( "Connection refused for data connection" ) );
startNextCmd();
return;
default:
return;
}
}
/**********************************************************************
*
* QFtpPrivate
*
*********************************************************************/
class QFtpPrivate
{
public:
QFtpPrivate() :
close_waitForStateChange(FALSE),
state( QFtp::Unconnected ),
error( QFtp::NoError ),
npWaitForLoginDone( FALSE )
{ pending.setAutoDelete( TRUE ); }
QFtpPI pi;
QPtrList<QFtpCommand> pending;
bool close_waitForStateChange;
QFtp::State state;
QFtp::Error error;
QString errorString;
bool npWaitForLoginDone;
};
static QPtrDict<QFtpPrivate> *d_ptr = 0;
static void cleanup_d_ptr()
{
delete d_ptr;
d_ptr = 0;
}
static QFtpPrivate* d( const QFtp* foo )
{
if ( !d_ptr ) {
d_ptr = new QPtrDict<QFtpPrivate>;
d_ptr->setAutoDelete( TRUE );
tqAddPostRoutine( cleanup_d_ptr );
}
QFtpPrivate* ret = d_ptr->find( (void*)foo );
if ( ! ret ) {
ret = new QFtpPrivate;
d_ptr->replace( (void*) foo, ret );
}
return ret;
}
static void delete_d( const QFtp* foo )
{
if ( d_ptr )
d_ptr->remove( (void*) foo );
}
/**********************************************************************
*
* QFtp implementation
*
*********************************************************************/
/*!
\class QFtp qftp.h
\brief The QFtp class provides an implementation of the FTP protocol.
\if defined(commercial)
It is part of the <a href="commercialeditions.html">Qt Enterprise Edition</a>.
\endif
\ingroup io
\module network
This class provides two different interfaces: one is the
QNetworkProtocol interface that allows you to use FTP through the
QUrlOperator abstraction. The other is a direct interface to FTP
that gives you lower-level access to the FTP protocol for finer
control. Using the direct interface you can also execute arbitrary
FTP commands.
Don't mix the two interfaces, since the behavior is not
well-defined.
If you want to use QFtp with the QNetworkProtocol interface, you
do not use it directly, but rather through a QUrlOperator, for
example:
\code
QUrlOperator op( "ftp://ftp.trolltech.com" );
op.listChildren(); // Asks the server to provide a directory listing
\endcode
This code will only work if the QFtp class is registered; to
register the class, you must call tqInitNetworkProtocols() before
using a QUrlOperator with QFtp.
The rest of this descrption describes the direct interface to FTP.
The class works asynchronously, so there are no blocking
functions. If an operation cannot be executed immediately, the
function will still return straight away and the operation will be
scheduled for later execution. The results of scheduled operations
are reported via signals. This approach depends on the event loop
being in operation.
The operations that can be scheduled (they are called "commands"
in the rest of the documentation) are the following:
connectToHost(), login(), close(), list(), cd(), get(), put(),
remove(), mkdir(), rmdir(), rename() and rawCommand().
All of these commands return a unique identifier that allows you
to keep track of the command that is currently being executed.
When the execution of a command starts, the commandStarted()
signal with the command's identifier is emitted. When the command
is finished, the commandFinished() signal is emitted with the
command's identifier and a bool that indicates whether the command
finished with an error.
In some cases, you might want to execute a sequence of commands,
e.g. if you want to connect and login to a FTP server. This is
simply achieved:
\code
QFtp *ftp = new QFtp( this ); // this is an optional QObject parent
ftp->connectToHost( "ftp.trolltech.com" );
ftp->login();
\endcode
In this case two FTP commands have been scheduled. When the last
scheduled command has finished, a done() signal is emitted with
a bool argument that tells you whether the sequence finished with
an error.
If an error occurs during the execution of one of the commands in
a sequence of commands, all the pending commands (i.e. scheduled,
but not yet executed commands) are cleared and no signals are
emitted for them.
Some commands, e.g. list(), emit additional signals to report
their results.
Example: If you want to download the INSTALL file from Trolltech's
FTP server, you would write this:
\code
ftp->connectToHost( "ftp.trolltech.com" ); // id == 1
ftp->login(); // id == 2
ftp->cd( "qt" ); // id == 3
ftp->get( "INSTALL" ); // id == 4
ftp->close(); // id == 5
\endcode
For this example the following sequence of signals is emitted
(with small variations, depending on network traffic, etc.):
\code
start( 1 )
stateChanged( HostLookup )
stateChanged( Connecting )
stateChanged( Connected )
finished( 1, FALSE )
start( 2 )
stateChanged( LoggedIn )
finished( 2, FALSE )
start( 3 )
finished( 3, FALSE )
start( 4 )
dataTransferProgress( 0, 3798 )
dataTransferProgress( 2896, 3798 )
readyRead()
dataTransferProgress( 3798, 3798 )
readyRead()
finished( 4, FALSE )
start( 5 )
stateChanged( Closing )
stateChanged( Unconnected )
finished( 5, FALSE )
done( FALSE )
\endcode
The dataTransferProgress() signal in the above example is useful
if you want to show a \link QProgressBar progressbar \endlink to
inform the user about the progress of the download. The
readyRead() signal tells you that there is data ready to be read.
The amount of data can be queried then with the bytesAvailable()
function and it can be read with the readBlock() or readAll()
function.
If the login fails for the above example, the signals would look
like this:
\code
start( 1 )
stateChanged( HostLookup )
stateChanged( Connecting )
stateChanged( Connected )
finished( 1, FALSE )
start( 2 )
finished( 2, TRUE )
done( TRUE )
\endcode
You can then get details about the error with the error() and
errorString() functions.
The functions currentId() and currentCommand() provide more
information about the currently executing command.
The functions hasPendingCommands() and clearPendingCommands()
allow you to query and clear the list of pending commands.
The safest and easiest way to use the FTP protocol is to use
QUrlOperator() or the FTP commands described above. If you are an
experienced network programmer and want to have complete control
you can use rawCommand() to execute arbitrary FTP commands.
\sa \link network.html Qt Network Documentation \endlink QNetworkProtocol, QUrlOperator QHttp
*/
/*!
Constructs a QFtp object.
*/
QFtp::QFtp() : QNetworkProtocol()
{
init();
}
/*!
Constructs a QFtp object. The \a parent and \a name parameters
are passed to the QObject constructor.
*/
QFtp::QFtp( QObject *parent, const char *name ) : QNetworkProtocol()
{
if ( parent )
parent->insertChild( this );
setName( name );
init();
}
void QFtp::init()
{
QFtpPrivate *d = ::d( this );
d->errorString = tr( "Unknown error" );
connect( &d->pi, SIGNAL(connectState(int)),
SLOT(piConnectState(int)) );
connect( &d->pi, SIGNAL(finished(const QString&)),
SLOT(piFinished(const QString&)) );
connect( &d->pi, SIGNAL(error(int,const QString&)),
SLOT(piError(int,const QString&)) );
connect( &d->pi, SIGNAL(rawFtpReply(int,const QString&)),
SLOT(piFtpReply(int,const QString&)) );
connect( &d->pi.dtp, SIGNAL(readyRead()),
SIGNAL(readyRead()) );
connect( &d->pi.dtp, SIGNAL(dataTransferProgress(int,int)),
SIGNAL(dataTransferProgress(int,int)) );
connect( &d->pi.dtp, SIGNAL(listInfo(const QUrlInfo&)),
SIGNAL(listInfo(const QUrlInfo&)) );
}
/*!
\enum QFtp::State
This enum defines the connection state:
\value Unconnected There is no connection to the host.
\value HostLookup A host name lookup is in progress.
\value Connecting An attempt to connect to the host is in progress.
\value Connected Connection to the host has been achieved.
\value LoggedIn Connection and user login have been achieved.
\value Closing The connection is closing down, but it is not yet
closed. (The state will be \c Unconnected when the connection is
closed.)
\sa stateChanged() state()
*/
/*!
\enum QFtp::Error
This enum identifies the error that occurred.
\value NoError No error occurred.
\value HostNotFound The host name lookup failed.
\value ConnectionRefused The server refused the connection.
\value NotConnected Tried to send a command, but there is no connection to
a server.
\value UnknownError An error other than those specified above
occurred.
\sa error()
*/
/*!
\enum QFtp::Command
This enum is used as the return value for the currentCommand() function.
This allows you to perform specific actions for particular
commands, e.g. in a FTP client, you might want to clear the
directory view when a list() command is started; in this case you
can simply check in the slot connected to the start() signal if
the currentCommand() is \c List.
\value None No command is being executed.
\value ConnectToHost connectToHost() is being executed.
\value Login login() is being executed.
\value Close close() is being executed.
\value List list() is being executed.
\value Cd cd() is being executed.
\value Get get() is being executed.
\value Put put() is being executed.
\value Remove remove() is being executed.
\value Mkdir mkdir() is being executed.
\value Rmdir rmdir() is being executed.
\value Rename rename() is being executed.
\value RawCommand rawCommand() is being executed.
\sa currentCommand()
*/
/*!
\fn void QFtp::stateChanged( int state )
This signal is emitted when the state of the connection changes.
The argument \a state is the new state of the connection; it is
one of the \l State values.
It is usually emitted in response to a connectToHost() or close()
command, but it can also be emitted "spontaneously", e.g. when the
server closes the connection unexpectedly.
\sa connectToHost() close() state() State
*/
/*!
\fn void QFtp::listInfo( const QUrlInfo &i );
This signal is emitted for each directory entry the list() command
finds. The details of the entry are stored in \a i.
\sa list()
*/
/*!
\fn void QFtp::commandStarted( int id )
This signal is emitted when processing the command identified by
\a id starts.
\sa commandFinished() done()
*/
/*!
\fn void QFtp::commandFinished( int id, bool error )
This signal is emitted when processing the command identified by
\a id has finished. \a error is TRUE if an error occurred during
the processing; otherwise \a error is FALSE.
\sa commandStarted() done() error() errorString()
*/
/*!
\fn void QFtp::done( bool error )
This signal is emitted when the last pending command has finished;
(it is emitted after the last command's commandFinished() signal).
\a error is TRUE if an error occurred during the processing;
otherwise \a error is FALSE.
\sa commandFinished() error() errorString()
*/
/*!
\fn void QFtp::readyRead()
This signal is emitted in response to a get() command when there
is new data to read.
If you specify a device as the second argument in the get()
command, this signal is \e not emitted; instead the data is
written directly to the device.
You can read the data with the readAll() or readBlock() functions.
This signal is useful if you want to process the data in chunks as
soon as it becomes available. If you are only interested in the
complete data, just connect to the commandFinished() signal and
read the data then instead.
\sa get() readBlock() readAll() bytesAvailable()
*/
/*!
\fn void QFtp::dataTransferProgress( int done, int total )
This signal is emitted in response to a get() or put() request to
indicate the current progress of the download or upload.
\a done is the amount of data that has already been transferred
and \a total is the total amount of data to be read or written. It
is possible that the QFtp class is not able to determine the total
amount of data that should be transferred, in which case \a total
is 0. (If you connect this signal to a QProgressBar, the progress
bar shows a busy indicator if the total is 0).
\warning \a done and \a total are not necessarily the size in
bytes, since for large files these values might need to be
"scaled" to avoid overflow.
\sa get() put() QProgressBar::setProgress()
*/
/*!
\fn void QFtp::rawCommandReply( int replyCode, const QString &detail );
This signal is emitted in response to the rawCommand() function.
\a replyCode is the 3 digit reply code and \a detail is the text
that follows the reply code.
\sa rawCommand()
*/
/*!
Connects to the FTP server \a host using port \a port.
The stateChanged() signal is emitted when the state of the
connecting process changes, e.g. to \c HostLookup, then \c
Connecting, then \c Connected.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa stateChanged() commandStarted() commandFinished()
*/
int QFtp::connectToHost( const QString &host, Q_UINT16 port )
{
QStringList cmds;
cmds << host;
cmds << QString::number( (uint)port );
return addCommand( new QFtpCommand( ConnectToHost, cmds ) );
}
/*!
Logs in to the FTP server with the username \a user and the
password \a password.
The stateChanged() signal is emitted when the state of the
connecting process changes, e.g. to \c LoggedIn.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa commandStarted() commandFinished()
*/
int QFtp::login( const QString &user, const QString &password )
{
QStringList cmds;
cmds << ( QString("USER ") + ( user.isNull() ? QString("anonymous") : user ) + "\r\n" );
cmds << ( QString("PASS ") + ( password.isNull() ? QString("anonymous@") : password ) + "\r\n" );
return addCommand( new QFtpCommand( Login, cmds ) );
}
/*!
Closes the connection to the FTP server.
The stateChanged() signal is emitted when the state of the
connecting process changes, e.g. to \c Closing, then \c
Unconnected.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa stateChanged() commandStarted() commandFinished()
*/
int QFtp::close()
{
return addCommand( new QFtpCommand( Close, QStringList("QUIT\r\n") ) );
}
/*!
Lists the contents of directory \a dir on the FTP server. If \a
dir is empty, it lists the contents of the current directory.
The listInfo() signal is emitted for each directory entry found.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa listInfo() commandStarted() commandFinished()
*/
int QFtp::list( const QString &dir )
{
QStringList cmds;
cmds << "TYPE A\r\n";
cmds << "PASV\r\n";
if ( dir.isEmpty() )
cmds << "LIST\r\n";
else
cmds << ( "LIST " + dir + "\r\n" );
return addCommand( new QFtpCommand( List, cmds ) );
}
/*!
Changes the working directory of the server to \a dir.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa commandStarted() commandFinished()
*/
int QFtp::cd( const QString &dir )
{
return addCommand( new QFtpCommand( Cd, QStringList("CWD "+dir+"\r\n") ) );
}
/*!
Downloads the file \a file from the server.
If \a dev is 0, then the readyRead() signal is emitted when there
is data available to read. You can then read the data with the
readBlock() or readAll() functions.
If \a dev is not 0, the data is written directly to the device \a
dev. Make sure that the \a dev pointer is valid for the duration
of the operation (it is safe to delete it when the
commandFinished() signal is emitted). In this case the readyRead()
signal is \e not emitted and you cannot read data with the
readBlock() or readAll() functions.
If you don't read the data immediately it becomes available, i.e.
when the readyRead() signal is emitted, it is still available
until the next command is started.
For example, if you want to present the data to the user as soon
as there is something available, connect to the readyRead() signal
and read the data immediately. On the other hand, if you only want
to work with the complete data, you can connect to the
commandFinished() signal and read the data when the get() command
is finished.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa readyRead() dataTransferProgress() commandStarted()
commandFinished()
*/
int QFtp::get( const QString &file, QIODevice *dev )
{
QStringList cmds;
cmds << ( "SIZE " + file + "\r\n" );
cmds << "TYPE I\r\n";
cmds << "PASV\r\n";
cmds << ( "RETR " + file + "\r\n" );
if ( dev )
return addCommand( new QFtpCommand( Get, cmds, dev ) );
return addCommand( new QFtpCommand( Get, cmds ) );
}
/*!
\overload
Writes the data \a data to the file called \a file on the server.
The progress of the upload is reported by the
dataTransferProgress() signal.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa dataTransferProgress() commandStarted() commandFinished()
*/
int QFtp::put( const QByteArray &data, const QString &file )
{
QStringList cmds;
cmds << "TYPE I\r\n";
cmds << "PASV\r\n";
cmds << ( "ALLO " + QString::number(data.size()) + "\r\n" );
cmds << ( "STOR " + file + "\r\n" );
return addCommand( new QFtpCommand( Put, cmds, data ) );
}
/*!
Reads the data from the IO device \a dev, and writes it to the
file called \a file on the server. The data is read in chunks from
the IO device, so this overload allows you to transmit large
amounts of data without the need to read all the data into memory
at once.
Make sure that the \a dev pointer is valid for the duration of the
operation (it is safe to delete it when the commandFinished() is
emitted).
*/
int QFtp::put( QIODevice *dev, const QString &file )
{
QStringList cmds;
cmds << "TYPE I\r\n";
cmds << "PASV\r\n";
if ( !dev->isSequentialAccess() )
cmds << ( "ALLO " + QString::number(dev->size()) + "\r\n" );
cmds << ( "STOR " + file + "\r\n" );
return addCommand( new QFtpCommand( Put, cmds, dev ) );
}
/*!
Deletes the file called \a file from the server.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa commandStarted() commandFinished()
*/
int QFtp::remove( const QString &file )
{
return addCommand( new QFtpCommand( Remove, QStringList("DELE "+file+"\r\n") ) );
}
/*!
Creates a directory called \a dir on the server.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa commandStarted() commandFinished()
*/
int QFtp::mkdir( const QString &dir )
{
return addCommand( new QFtpCommand( Mkdir, QStringList("MKD "+dir+"\r\n") ) );
}
/*!
Removes the directory called \a dir from the server.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa commandStarted() commandFinished()
*/
int QFtp::rmdir( const QString &dir )
{
return addCommand( new QFtpCommand( Rmdir, QStringList("RMD "+dir+"\r\n") ) );
}
/*!
Renames the file called \a oldname to \a newname on the server.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa commandStarted() commandFinished()
*/
int QFtp::rename( const QString &oldname, const QString &newname )
{
QStringList cmds;
cmds << ( "RNFR " + oldname + "\r\n" );
cmds << ( "RNTO " + newname + "\r\n" );
return addCommand( new QFtpCommand( Rename, cmds ) );
}
/*!
Sends the raw FTP command \a command to the FTP server. This is
useful for low-level FTP access. If the operation you wish to
perform has an equivalent QFtp function, we recommend using the
function instead of raw FTP commands since the functions are
easier and safer.
The function does not block and returns immediately. The command
is scheduled, and its execution is performed asynchronously. The
function returns a unique identifier which is passed by
commandStarted() and commandFinished().
When the command is started the commandStarted() signal is
emitted. When it is finished the commandFinished() signal is
emitted.
\sa rawCommandReply() commandStarted() commandFinished()
*/
int QFtp::rawCommand( const QString &command )
{
QString cmd = command.stripWhiteSpace() + "\r\n";
return addCommand( new QFtpCommand( RawCommand, QStringList(cmd) ) );
}
/*!
Returns the number of bytes that can be read from the data socket
at the moment.
\sa get() readyRead() readBlock() readAll()
*/
Q_ULONG QFtp::bytesAvailable() const
{
QFtpPrivate *d = ::d( this );
return d->pi.dtp.bytesAvailable();
}
/*!
Reads \a maxlen bytes from the data socket into \a data and
returns the number of bytes read. Returns -1 if an error occurred.
\sa get() readyRead() bytesAvailable() readAll()
*/
Q_LONG QFtp::readBlock( char *data, Q_ULONG maxlen )
{
QFtpPrivate *d = ::d( this );
return d->pi.dtp.readBlock( data, maxlen );
}
/*!
Reads all the bytes available from the data socket and returns
them.
\sa get() readyRead() bytesAvailable() readBlock()
*/
QByteArray QFtp::readAll()
{
QFtpPrivate *d = ::d( this );
return d->pi.dtp.readAll();
}
/*!
Aborts the current command and deletes all scheduled commands.
If there is an unfinished command (i.e. a command for which the
commandStarted() signal has been emitted, but for which the
commandFinished() signal has not been emitted), this function
sends an \c ABORT command to the server. When the server replies
that the command is aborted, the commandFinished() signal with the
\c error argument set to \c TRUE is emitted for the command. Due
to timing issues, it is possible that the command had already
finished before the abort request reached the server, in which
case, the commandFinished() signal is emitted with the \c error
argument set to \c FALSE.
For all other commands that are affected by the abort(), no
signals are emitted.
If you don't start further FTP commands directly after the
abort(), there won't be any scheduled commands and the done()
signal is emitted.
\warning Some FTP servers, for example the BSD FTP daemon (version
0.3), wrongly return a positive reply even when an abort has
occurred. For these servers the commandFinished() signal has its
error flag set to \c FALSE, even though the command did not
complete successfully.
\sa clearPendingCommands()
*/
void QFtp::abort()
{
QFtpPrivate *d = ::d( this );
if ( d->pending.isEmpty() )
return;
clearPendingCommands();
d->pi.abort();
}
/*!
Returns the identifier of the FTP command that is being executed
or 0 if there is no command being executed.
\sa currentCommand()
*/
int QFtp::currentId() const
{
QFtpPrivate *d = ::d( this );
QFtpCommand *c = d->pending.getFirst();
if ( c == 0 )
return 0;
return c->id;
}
/*!
Returns the command type of the FTP command being executed or \c
None if there is no command being executed.
\sa currentId()
*/
QFtp::Command QFtp::currentCommand() const
{
QFtpPrivate *d = ::d( this );
QFtpCommand *c = d->pending.getFirst();
if ( c == 0 )
return None;
return c->command;
}
/*!
Returns the QIODevice pointer that is used by the FTP command to read data
from or store data to. If there is no current FTP command being executed or
if the command does not use an IO device, this function returns 0.
This function can be used to delete the QIODevice in the slot connected to
the commandFinished() signal.
\sa get() put()
*/
QIODevice* QFtp::currentDevice() const
{
QFtpPrivate *d = ::d( this );
QFtpCommand *c = d->pending.getFirst();
if ( !c )
return 0;
if ( c->is_ba )
return 0;
return c->data.dev;
}
/*!
Returns TRUE if there are any commands scheduled that have not yet
been executed; otherwise returns FALSE.
The command that is being executed is \e not considered as a
scheduled command.
\sa clearPendingCommands() currentId() currentCommand()
*/
bool QFtp::hasPendingCommands() const
{
QFtpPrivate *d = ::d( this );
return d->pending.count() > 1;
}
/*!
Deletes all pending commands from the list of scheduled commands.
This does not affect the command that is being executed. If you
want to stop this this as well, use abort().
\sa hasPendingCommands() abort()
*/
void QFtp::clearPendingCommands()
{
QFtpPrivate *d = ::d( this );
QFtpCommand *c = 0;
if ( d->pending.count() > 0 )
c = d->pending.take( 0 );
d->pending.clear();
if ( c )
d->pending.append( c );
}
/*!
Returns the current state of the object. When the state changes,
the stateChanged() signal is emitted.
\sa State stateChanged()
*/
QFtp::State QFtp::state() const
{
QFtpPrivate *d = ::d( this );
return d->state;
}
/*!
Returns the last error that occurred. This is useful to find out
what when wrong when receiving a commandFinished() or a done()
signal with the \c error argument set to \c TRUE.
If you start a new command, the error status is reset to \c NoError.
*/
QFtp::Error QFtp::error() const
{
QFtpPrivate *d = ::d( this );
return d->error;
}
/*!
Returns a human-readable description of the last error that
occurred. This is useful for presenting a error message to the
user when receiving a commandFinished() or a done() signal with
the \c error argument set to \c TRUE.
The error string is often (but not always) the reply from the
server, so it is not always possible to translate the string. If
the message comes from Qt, the string has already passed through
tr().
*/
QString QFtp::errorString() const
{
QFtpPrivate *d = ::d( this );
return d->errorString;
}
int QFtp::addCommand( QFtpCommand *cmd )
{
QFtpPrivate *d = ::d( this );
d->pending.append( cmd );
if ( d->pending.count() == 1 )
// don't emit the commandStarted() signal before the id is returned
QTimer::singleShot( 0, this, SLOT(startNextCommand()) );
return cmd->id;
}
void QFtp::startNextCommand()
{
QFtpPrivate *d = ::d( this );
QFtpCommand *c = d->pending.getFirst();
if ( c == 0 )
return;
d->error = NoError;
d->errorString = tr( "Unknown error" );
if ( bytesAvailable() )
readAll(); // clear the data
emit commandStarted( c->id );
if ( c->command == ConnectToHost ) {
d->pi.connectToHost( c->rawCmds[0], c->rawCmds[1].toUInt() );
} else {
if ( c->command == Put ) {
if ( c->is_ba ) {
d->pi.dtp.setData( c->data.ba );
d->pi.dtp.setBytesTotal( c->data.ba->size() );
} else if ( c->data.dev && (c->data.dev->isOpen() || c->data.dev->open(IO_ReadOnly) ) ) {
d->pi.dtp.setDevice( c->data.dev );
if ( c->data.dev->isSequentialAccess() )
d->pi.dtp.setBytesTotal( 0 );
else
d->pi.dtp.setBytesTotal( c->data.dev->size() );
}
} else if ( c->command == Get ) {
if ( !c->is_ba && c->data.dev ) {
d->pi.dtp.setDevice( c->data.dev );
}
} else if ( c->command == Close ) {
d->state = QFtp::Closing;
emit stateChanged( d->state );
}
if ( !d->pi.sendCommands( c->rawCmds ) ) {
// ### error handling (this case should not happen)
}
}
}
void QFtp::piFinished( const QString& )
{
QFtpPrivate *d = ::d( this );
QFtpCommand *c = d->pending.getFirst();
if ( c == 0 )
return;
if ( c->command == Close ) {
// The order of in which the slots are called is arbitrary, so
// disconnect the SIGNAL-SIGNAL temporary to make sure that we
// don't get the commandFinished() signal before the stateChanged()
// signal.
if ( d->state != QFtp::Unconnected ) {
d->close_waitForStateChange = TRUE;
return;
}
}
emit commandFinished( c->id, FALSE );
d->pending.removeFirst();
if ( d->pending.isEmpty() ) {
emit done( FALSE );
} else {
startNextCommand();
}
}
void QFtp::piError( int errorCode, const QString &text )
{
QFtpPrivate *d = ::d( this );
QFtpCommand *c = d->pending.getFirst();
// non-fatal errors
if ( c->command==Get && d->pi.currentCommand().startsWith("SIZE ") ) {
d->pi.dtp.setBytesTotal( -1 );
return;
} else if ( c->command==Put && d->pi.currentCommand().startsWith("ALLO ") ) {
return;
}
d->error = (Error)errorCode;
switch ( currentCommand() ) {
case ConnectToHost:
d->errorString = tr( "Connecting to host failed:\n%1" ).arg( text );
break;
case Login:
d->errorString = tr( "Login failed:\n%1" ).arg( text );
break;
case List:
d->errorString = tr( "Listing directory failed:\n%1" ).arg( text );
break;
case Cd:
d->errorString = tr( "Changing directory failed:\n%1" ).arg( text );
break;
case Get:
d->errorString = tr( "Downloading file failed:\n%1" ).arg( text );
break;
case Put:
d->errorString = tr( "Uploading file failed:\n%1" ).arg( text );
break;
case Remove:
d->errorString = tr( "Removing file failed:\n%1" ).arg( text );
break;
case Mkdir:
d->errorString = tr( "Creating directory failed:\n%1" ).arg( text );
break;
case Rmdir:
d->errorString = tr( "Removing directory failed:\n%1" ).arg( text );
break;
default:
d->errorString = text;
break;
}
d->pi.clearPendingCommands();
clearPendingCommands();
emit commandFinished( c->id, TRUE );
d->pending.removeFirst();
if ( d->pending.isEmpty() )
emit done( TRUE );
else
startNextCommand();
}
void QFtp::piConnectState( int state )
{
QFtpPrivate *d = ::d( this );
d->state = (State)state;
emit stateChanged( d->state );
if ( d->close_waitForStateChange ) {
d->close_waitForStateChange = FALSE;
piFinished( tr( "Connection closed" ) );
}
}
void QFtp::piFtpReply( int code, const QString &text )
{
if ( currentCommand() == RawCommand ) {
QFtpPrivate *d = ::d( this );
d->pi.rawCommand = TRUE;
emit rawCommandReply( code, text );
}
}
/*!
Destructor.
*/
QFtp::~QFtp()
{
abort();
close();
delete_d( this );
}
/**********************************************************************
*
* QFtp implementation of the QNetworkProtocol interface
*
*********************************************************************/
/*! \reimp
*/
void QFtp::operationListChildren( QNetworkOperation *op )
{
op->setState( StInProgress );
cd( ( url()->path().isEmpty() ? QString( "/" ) : url()->path() ) );
list();
emit start( op );
}
/*! \reimp
*/
void QFtp::operationMkDir( QNetworkOperation *op )
{
op->setState( StInProgress );
mkdir( op->arg( 0 ) );
}
/*! \reimp
*/
void QFtp::operationRemove( QNetworkOperation *op )
{
op->setState( StInProgress );
cd( ( url()->path().isEmpty() ? QString( "/" ) : url()->path() ) );
remove( QUrl( op->arg( 0 ) ).path() );
}
/*! \reimp
*/
void QFtp::operationRename( QNetworkOperation *op )
{
op->setState( StInProgress );
cd( ( url()->path().isEmpty() ? QString( "/" ) : url()->path() ) );
rename( op->arg( 0 ), op->arg( 1 ));
}
/*! \reimp
*/
void QFtp::operationGet( QNetworkOperation *op )
{
op->setState( StInProgress );
QUrl u( op->arg( 0 ) );
get( u.path() );
}
/*! \reimp
*/
void QFtp::operationPut( QNetworkOperation *op )
{
op->setState( StInProgress );
QUrl u( op->arg( 0 ) );
put( op->rawArg(1), u.path() );
}
/*! \reimp
*/
bool QFtp::checkConnection( QNetworkOperation *op )
{
QFtpPrivate *d = ::d( this );
if ( state() == Unconnected && !d->npWaitForLoginDone ) {
connect( this, SIGNAL(listInfo(const QUrlInfo&)),
this, SLOT(npListInfo(const QUrlInfo&)) );
connect( this, SIGNAL(done(bool)),
this, SLOT(npDone(bool)) );
connect( this, SIGNAL(stateChanged(int)),
this, SLOT(npStateChanged(int)) );
connect( this, SIGNAL(dataTransferProgress(int,int)),
this, SLOT(npDataTransferProgress(int,int)) );
connect( this, SIGNAL(readyRead()),
this, SLOT(npReadyRead()) );
d->npWaitForLoginDone = TRUE;
switch ( op->operation() ) {
case OpGet:
case OpPut:
{
QUrl u( op->arg( 0 ) );
connectToHost( u.host(), u.port() != -1 ? u.port() : 21 );
}
break;
default:
connectToHost( url()->host(), url()->port() != -1 ? url()->port() : 21 );
break;
}
QString user = url()->user().isEmpty() ? QString( "anonymous" ) : url()->user();
QString pass = url()->password().isEmpty() ? QString( "anonymous@" ) : url()->password();
login( user, pass );
}
if ( state() == LoggedIn )
return TRUE;
return FALSE;
}
/*! \reimp
*/
int QFtp::supportedOperations() const
{
return OpListChildren | OpMkDir | OpRemove | OpRename | OpGet | OpPut;
}
/*! \internal
Parses the string, \a buffer, which is one line of a directory
listing which came from the FTP server, and sets the values which
have been parsed to the url info object, \a info.
*/
void QFtp::parseDir( const QString &buffer, QUrlInfo &info )
{
QFtpDTP::parseDir( buffer, url()->user(), &info );
}
void QFtp::npListInfo( const QUrlInfo & i )
{
if ( url() ) {
QRegExp filt( url()->nameFilter(), FALSE, TRUE );
if ( i.isDir() || filt.search( i.name() ) != -1 ) {
emit newChild( i, operationInProgress() );
}
} else {
emit newChild( i, operationInProgress() );
}
}
void QFtp::npDone( bool err )
{
QFtpPrivate *d = ::d( this );
bool emitFinishedSignal = FALSE;
QNetworkOperation *op = operationInProgress();
if ( op ) {
if ( err ) {
op->setProtocolDetail( errorString() );
op->setState( StFailed );
if ( error() == HostNotFound ) {
op->setErrorCode( (int)ErrHostNotFound );
} else {
switch ( op->operation() ) {
case OpListChildren:
op->setErrorCode( (int)ErrListChildren );
break;
case OpMkDir:
op->setErrorCode( (int)ErrMkDir );
break;
case OpRemove:
op->setErrorCode( (int)ErrRemove );
break;
case OpRename:
op->setErrorCode( (int)ErrRename );
break;
case OpGet:
op->setErrorCode( (int)ErrGet );
break;
case OpPut:
op->setErrorCode( (int)ErrPut );
break;
}
}
emitFinishedSignal = TRUE;
} else if ( !d->npWaitForLoginDone ) {
switch ( op->operation() ) {
case OpRemove:
emit removed( op );
break;
case OpMkDir:
{
QUrlInfo inf( op->arg( 0 ), 0, "", "", 0, QDateTime(),
QDateTime(), TRUE, FALSE, FALSE, TRUE, TRUE, TRUE );
emit newChild( inf, op );
emit createdDirectory( inf, op );
}
break;
case OpRename:
emit itemChanged( operationInProgress() );
break;
default:
break;
}
op->setState( StDone );
emitFinishedSignal = TRUE;
}
}
d->npWaitForLoginDone = FALSE;
if ( state() == Unconnected ) {
disconnect( this, SIGNAL(listInfo(const QUrlInfo&)),
this, SLOT(npListInfo(const QUrlInfo&)) );
disconnect( this, SIGNAL(done(bool)),
this, SLOT(npDone(bool)) );
disconnect( this, SIGNAL(stateChanged(int)),
this, SLOT(npStateChanged(int)) );
disconnect( this, SIGNAL(dataTransferProgress(int,int)),
this, SLOT(npDataTransferProgress(int,int)) );
disconnect( this, SIGNAL(readyRead()),
this, SLOT(npReadyRead()) );
}
// emit the finished() signal at the very end to avoid reentrance problems
if ( emitFinishedSignal )
emit finished( op );
}
void QFtp::npStateChanged( int state )
{
if ( url() ) {
if ( state == Connecting )
emit connectionStateChanged( ConHostFound, tr( "Host %1 found" ).arg( url()->host() ) );
else if ( state == Connected )
emit connectionStateChanged( ConConnected, tr( "Connected to host %1" ).arg( url()->host() ) );
else if ( state == Unconnected )
emit connectionStateChanged( ConClosed, tr( "Connection to %1 closed" ).arg( url()->host() ) );
} else {
if ( state == Connecting )
emit connectionStateChanged( ConHostFound, tr( "Host found" ) );
else if ( state == Connected )
emit connectionStateChanged( ConConnected, tr( "Connected to host" ) );
else if ( state == Unconnected )
emit connectionStateChanged( ConClosed, tr( "Connection closed" ) );
}
}
void QFtp::npDataTransferProgress( int bDone, int bTotal )
{
emit QNetworkProtocol::dataTransferProgress( bDone, bTotal, operationInProgress() );
}
void QFtp::npReadyRead()
{
emit data( readAll(), operationInProgress() );
}
// ### unused -- delete in Qt 4.0
/*! \internal
*/
void QFtp::hostFound()
{
}
/*! \internal
*/
void QFtp::connected()
{
}
/*! \internal
*/
void QFtp::closed()
{
}
/*! \internal
*/
void QFtp::dataHostFound()
{
}
/*! \internal
*/
void QFtp::dataConnected()
{
}
/*! \internal
*/
void QFtp::dataClosed()
{
}
/*! \internal
*/
void QFtp::dataReadyRead()
{
}
/*! \internal
*/
void QFtp::dataBytesWritten( int )
{
}
/*! \internal
*/
void QFtp::error( int )
{
}
#include "qftp.moc"
#endif // QT_NO_NETWORKPROTOCOL_FTP