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/***************************************************************************
* *
* Copyright (C) 2005 by Kevin Gilbert *
* [email protected] *
* *
* This program 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 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
***************************************************************************/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
#include <sys/time.h>
#include <ntqapplication.h>
#include <tdelocale.h>
#include "nmapoutputbuffer.h"
#include "scanmonitor.h"
#include "scanmonitorevent.h"
#include "scanwidget.h"
// constructor
// ===========
ScanMonitor::ScanMonitor( ScanWidget* parent )
: TQThread( ),
m_buffer( NULL ),
m_nmapBufferSize( 16384 ),
m_parent( parent )
{ m_buffers.setAutoDelete( true );
}
// getBuffer
// =========
void ScanMonitor::getBuffer( )
{ for( m_buffer = m_buffers.first( ); m_buffer != NULL; m_buffer = m_buffers.next( ))
if( m_buffer->isFree( ))
{ m_buffer->setBusy( );
m_buffers.take( );
m_buffers.append( m_buffer );
return;
}
m_buffer = new NmapOutputBuffer( m_nmapBufferSize );
m_buffers.append( m_buffer );
}
// readNmapOutput
// ==============
void ScanMonitor::readNmapOutput( const int pipeFD, const ScanMonitorEventType type )
{ while( true )
{ if( m_buffer == NULL )
getBuffer( );
else
m_buffer->setBusy( );
int bytesRead = ::read( pipeFD, m_buffer->buffer( ), m_nmapBufferSize );
if( bytesRead > 0 )
{ m_buffer->length( bytesRead );
TQApplication::postEvent( m_parent, new ScanMonitorEvent( type, m_buffer ));
m_buffer = NULL;
continue;
}
if( !bytesRead || errno == EAGAIN || errno == EBADF )
{ m_buffer->setFree( );
break;
}
TQString text = TQString( i18n( "error reading nmap output from pipe: %2\n" )).arg( strerror( errno ));
strcpy( m_buffer->buffer( ), text.ascii( ));
m_buffer->length( text.length( ));
TQApplication::postEvent( m_parent, new ScanMonitorEvent( StderrType, m_buffer ));
m_buffer = NULL;
break;
}
}
// run
// ===
void ScanMonitor::run( )
{ fd_set efds;
fd_set rfds;
struct timeval timeout;
while( true )
{ FD_ZERO( &efds );
FD_ZERO( &rfds );
FD_SET( m_pipeStderrFD, &efds);
FD_SET( m_pipeStdoutFD, &efds);
FD_SET( m_pipeStderrFD, &rfds);
FD_SET( m_pipeStdoutFD, &rfds);
timeout.tv_sec = 2;
timeout.tv_usec = 0;
if( !select( _max_( m_pipeStderrFD, m_pipeStdoutFD ) + 1, &rfds, NULL, &efds, &timeout ))
continue;
if( FD_ISSET( m_pipeStderrFD, &efds ) || FD_ISSET( m_pipeStdoutFD, &efds ))
break;
if( FD_ISSET( m_pipeStderrFD, &rfds ))
readNmapOutput( m_pipeStderrFD, StderrType );
if( FD_ISSET( m_pipeStdoutFD, &rfds ))
readNmapOutput( m_pipeStdoutFD, StdoutType );
}
}
// setPipeFDs
// ==========
void ScanMonitor::setPipeFDs( const int pipeStderrFD, const int pipeStdoutFD )
{ m_pipeStderrFD = pipeStderrFD;
m_pipeStdoutFD = pipeStdoutFD;
}
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