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/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This software 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 General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "SshFileWriteSocket.h"
#include "Debug.h"
#include <QElapsedTimer>
#if HAVE_SSH
#include <libssh2.h>
#endif
namespace Ssh
{
//_______________________________________________________________________
FileWriteSocket::FileWriteSocket( QObject* parent ):
BaseSocket( parent )
{}
//_______________________________________________________________________
void FileWriteSocket::connectToFile( void* session, const QString& path, quint64 size, int mode )
{
Debug::Throw() << "Ssh::FileWriteSocket::connectToFile - " << path << " size: " << size << endl;
// store session, host and port
session_ = session;
path_ = path;
size_ = size;
mode_ = mode;
// make sure timer is running
if( timer_.isActive() ) timer_.stop();
_addCommand( Connect );
}
//_______________________________________________________________________
void FileWriteSocket::sendEof()
{
_addCommand( SendEof );
_addCommand( WaitForEof );
_addCommand( WaitForClosed );
}
//_______________________________________________________________________
bool FileWriteSocket::waitForConnected( int msecs )
{
// do nothing if already connected
if( isConnected() ) return true;
QElapsedTimer timer;
timer.start();
while( msecs < 0 || timer.elapsed() < msecs )
{ if( !_processCommands() ) return true; }
return false;
}
//_______________________________________________________________________
bool FileWriteSocket::waitForCompleted( int msecs )
{
QElapsedTimer timer;
timer.start();
while( msecs < 0 || timer.elapsed() < msecs )
{ if( !_processCommands() ) return true; }
return false;
}
//_______________________________________________________________________
void FileWriteSocket::timerEvent( QTimerEvent* event )
{
// check timer id
if( event->timerId() == timer_.timerId() )
{
if( !_processCommands() && timer_.isActive() ) timer_.stop();
} else return BaseSocket::timerEvent( event );
}
//_______________________________________________
void FileWriteSocket::_addCommand( Command command )
{
Debug::Throw() << "Ssh::FileWriteSocket::_AddCommand: " << command << endl;
commands_.append( command );
if( !timer_.isActive() ) timer_.start( _latency(), this );
}
//_______________________________________________
bool FileWriteSocket::_processCommands()
{
// check empty commands list
if( commands_.empty() ) return false;
switch( commands_.front() )
{
case Connect:
{
if( _tryConnect() && !commands_.empty() ) commands_.removeFirst();
return true;
}
case SendEof:
{
if( _trySendEof() && !commands_.empty() ) commands_.removeFirst();
return true;
}
case WaitForEof:
{
if( _tryWaitEof() && !commands_.empty() ) commands_.removeFirst();
return true;
}
case WaitForClosed:
{
if( _tryClose() && !commands_.empty() ) commands_.removeFirst();
return true;
}
default:
if( !commands_.empty() )
{ commands_.removeFirst(); }
return true;
}
return false;
}
//_______________________________________________________________________
bool FileWriteSocket::_tryConnect()
{
if( isConnected() ) return true;
Debug::Throw( "FileWriteSocket::_tryConnect.\n" );
#if HAVE_SSH
const auto session( static_cast<LIBSSH2_SESSION*>(session_) );
if( !session )
{
setErrorString( tr( "invalid session" ) );
emit error( QAbstractSocket::ConnectionRefusedError );
return true;
}
const auto channel = libssh2_scp_send64( session, qPrintable( path_ ), mode_&0777, (libssh2_uint64_t) size_, 0, 0 );
if( channel )
{
_setChannel( channel, QIODevice::WriteOnly );
return true;
} else if( libssh2_session_last_errno( session ) != LIBSSH2_ERROR_EAGAIN ) {
char *errMsg(nullptr);
libssh2_session_last_error(session, &errMsg, NULL, 0);
setErrorString( tr( "error connecting to remote file %1: %2" ).arg( path_ ).arg( errMsg ) );
emit error( QAbstractSocket::ConnectionRefusedError );
return true;
}
return false;
#else
return true;
#endif
}
//_______________________________________________________________________
bool FileWriteSocket::_trySendEof()
{
Debug::Throw( "FileWriteSocket::_trySendEof.\n" );
#if HAVE_SSH
const auto session( static_cast<LIBSSH2_SESSION*>(session_) );
if( !session )
{
setErrorString( tr( "invalid session" ) );
emit error( QAbstractSocket::ConnectionRefusedError );
return true;
}
const auto channel( static_cast<LIBSSH2_CHANNEL*>(_channel() ) );
int result = libssh2_channel_send_eof( channel );
if( result == 0 ) return true;
else if( result == LIBSSH2_ERROR_EAGAIN ) return false;
else {
char *errMsg(nullptr);
libssh2_session_last_error(session, &errMsg, NULL, 0);
setErrorString( tr( "error sending eof to remote file %1: %2" ).arg( path_ ).arg( errMsg ) );
emit error( QAbstractSocket::UnknownSocketError );
return true;
}
#else
setErrorString( tr( "no ssh" ) );
return true;
#endif
}
//_______________________________________________________________________
bool FileWriteSocket::_tryWaitEof()
{
Debug::Throw( "FileWriteSocket::_tryWaitEof.\n" );
#if HAVE_SSH
const auto session( static_cast<LIBSSH2_SESSION*>(session_) );
if( !session )
{
setErrorString( tr( "invalid session" ) );
emit error( QAbstractSocket::ConnectionRefusedError );
return true;
}
const auto channel( static_cast<LIBSSH2_CHANNEL*>(_channel() ) );
int result = libssh2_channel_wait_eof( channel );
if( result == 0 ) return true;
else if( result == LIBSSH2_ERROR_EAGAIN ) return false;
else {
char *errMsg(nullptr);
libssh2_session_last_error(session, &errMsg, NULL, 0);
setErrorString( tr( "error waiting for eof from remote file %1: %2" ).arg( path_ ).arg( errMsg ) );
emit error( QAbstractSocket::UnknownSocketError );
return true;
}
#else
setErrorString( tr( "no ssh" ) );
return true;
#endif
}
//_______________________________________________________________________
bool FileWriteSocket::_tryClose()
{
Debug::Throw( "FileWriteSocket::_tryClose.\n" );
#if HAVE_SSH
const auto session( static_cast<LIBSSH2_SESSION*>(session_) );
if( !session )
{
setErrorString( tr( "invalid session" ) );
emit error( QAbstractSocket::ConnectionRefusedError );
return true;
}
const auto channel( static_cast<LIBSSH2_CHANNEL*>(_channel() ) );
int result = libssh2_channel_wait_closed( channel );
if( result == 0 ) return true;
else if( result == LIBSSH2_ERROR_EAGAIN ) return false;
else {
char *errMsg(nullptr);
libssh2_session_last_error(session, &errMsg, NULL, 0);
setErrorString( tr( "error waiting for closed from remote file %1: %2" ).arg( path_ ).arg( errMsg ) );
emit error( QAbstractSocket::UnknownSocketError );
return true;
}
#else
setErrorString( tr( "no ssh" ) );
return true;
#endif
}
}
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