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-rw-r--r--libopie2/examples/opienet/miniwellenreiter/miniwellenreiter.cpp2
-rw-r--r--libopie2/opienet/opcap.cpp2
2 files changed, 2 insertions, 2 deletions
diff --git a/libopie2/examples/opienet/miniwellenreiter/miniwellenreiter.cpp b/libopie2/examples/opienet/miniwellenreiter/miniwellenreiter.cpp
index 34d32d2..c49daa0 100644
--- a/libopie2/examples/opienet/miniwellenreiter/miniwellenreiter.cpp
+++ b/libopie2/examples/opienet/miniwellenreiter/miniwellenreiter.cpp
@@ -1,217 +1,217 @@
#include <qdict.h>
#include <qsocketnotifier.h>
#include <qstring.h>
#include <opie2/onetwork.h>
#include <qapplication.h>
#include <opie2/opcap.h>
#include <cerrno>
#include <cstdio>
#include <cstdlib>
#include <cstring>
//======================== Station help class ===============================
class Station
{
public:
Station( QString t, int c, bool w ) : type(t), channel(c), wep(w), beacons(1) {};
~Station() {};
QString type;
int channel;
bool wep;
int beacons;
};
QDict<Station> stations;
//======================== Application class ===============================
class Wellenreiter : public QApplication
{
Q_OBJECT
public:
Wellenreiter( int argc, char** argv ) : QApplication( argc, argv )
{
ONetwork* net = ONetwork::instance();
if ( argc < 3 )
{
printf( "Usage: ./%s <interface> <driver> <interval>\n", argv[0] );
printf( "\n" );
printf( "Valid wireless interfaces (detected) are:\n" );
ONetwork::InterfaceIterator it = net->iterator();
while ( it.current() )
{
if ( it.current()->isWireless() )
{
printf( " - '%s' (MAC=%s) (IPv4=%s)\n", (const char*) it.current()->name(),
(const char*) it.current()->macAddress().toString(),
(const char*) it.current()->ipV4Address() );
}
++it;
}
exit( -1 );
}
printf( "****************************************************\n" );
printf( "* Wellenreiter mini edition 1.0 (C) 2003 M-M-M *\n" );
printf( "****************************************************\n" );
printf( "\n\n" );
QString interface( argv[1] );
QString driver( argv[2] );
printf( "Trying to use '%s' as %s-controlled device...\n", (const char*) interface, (const char*) driver );
// sanity checks before downcasting
ONetworkInterface* iface = net->interface( interface );
if ( !iface )
{
printf( "Interface '%s' doesn't exist. Exiting.\n", (const char*) interface );
exit( -1 );
}
if ( !iface->isWireless() )
{
printf( "Interface '%s' doesn't support wireless extensions. Exiting.\n", (const char*) interface );
exit( -1 );
}
// downcast should be safe now
wiface = (OWirelessNetworkInterface*) iface;
printf( "Using wireless interface '%s' for scanning (current SSID is '%s')...\n", (const char*) interface, (const char*) wiface->SSID() );
// ifconfig +promisc the interface to receive all packets
if ( !wiface->promiscuousMode() )
{
printf( "Interface status is not promisc... switching to promisc... " );
wiface->setPromiscuousMode( true );
if ( !wiface->promiscuousMode() )
{
printf( "failed (%s). Exiting.\n", strerror( errno ) );
exit( -1 );
}
else
{
printf( "ok.\n" );
}
}
else
printf( "Interface status is already promisc - good.\n" );
// connect a monitoring strategy to the interface
if ( driver == "orinoco" )
- new OOrinocoMonitoringInterface( wiface );
+ new OOrinocoMonitoringInterface( wiface, false );
else
{
printf( "Unknown driver. Exiting\n" );
exit( -1 );
}
// enable monitoring mode
printf( "Enabling monitor mode...\n" );
//wiface->setMonitorMode( true );
// open a packet capturer
cap = new OPacketCapturer();
cap->open( interface );
if ( !cap->isOpen() )
{
printf( "Unable to open libpcap (%s). Exiting.\n", strerror( errno ) );
exit( -1 );
}
// set capturer to non-blocking mode
cap->setBlocking( false );
// start channel hopper
//wiface->setChannelHopping( 1000 );
// connect
connect( cap, SIGNAL( receivedPacket(OPacket*) ), this, SLOT( receivePacket(OPacket*) ) );
}
~Wellenreiter() {};
public slots:
void receivePacket(OPacket* p)
{
if (!p)
{
printf( "(empty packet received)\n" );
return;
}
OWaveLanManagementPacket* beacon = (OWaveLanManagementPacket*) p->child( "802.11 Management" );
if ( beacon )
{
OWaveLanManagementSSID* ssid = static_cast<OWaveLanManagementSSID*>( p->child( "802.11 SSID" ) );
QString essid = ssid ? ssid->ID() : "<unknown>";
if ( stations.find( essid ) )
stations[essid]->beacons++;
else
{
printf( "found new network @ channel %d, SSID = '%s'\n", wiface->channel(), (const char*) essid );
stations.insert( essid, new Station( "unknown", wiface->channel(),
((OWaveLanPacket*) beacon->parent())->usesWep() ) );
}
return;
}
OWaveLanDataPacket* data = (OWaveLanDataPacket*) p->child( "802.11 Data" );
if ( data )
{
OWaveLanPacket* wlan = (OWaveLanPacket*) p->child( "802.11" );
if ( wlan->fromDS() && !wlan->toDS() )
{
printf( "FromDS: '%s' -> '%s' via '%s'\n",
(const char*) wlan->macAddress3().toString(true),
(const char*) wlan->macAddress1().toString(true),
(const char*) wlan->macAddress2().toString(true) );
}
else
if ( !wlan->fromDS() && wlan->toDS() )
{
printf( "ToDS: '%s' -> '%s' via '%s'\n",
(const char*) wlan->macAddress2().toString(true),
(const char*) wlan->macAddress3().toString(true),
(const char*) wlan->macAddress1().toString(true) );
}
else
if ( wlan->fromDS() && wlan->toDS() )
{
printf( "WSD(bridge): '%s' -> '%s' via '%s' and '%s'\n",
(const char*) wlan->macAddress4().toString(true),
(const char*) wlan->macAddress3().toString(true),
(const char*) wlan->macAddress1().toString(true),
(const char*) wlan->macAddress2().toString(true) );
}
else
{
printf( "IBSS(AdHoc): '%s' -> '%s' (Cell: '%s')'\n",
(const char*) wlan->macAddress2().toString(true),
(const char*) wlan->macAddress1().toString(true),
(const char*) wlan->macAddress3().toString(true) );
}
return;
}
}
private:
OPacketCapturer* cap;
OWirelessNetworkInterface* wiface;
};
int main( int argc, char** argv )
{
Wellenreiter w( argc, argv );
w.exec();
return 0;
}
#include "miniwellenreiter.moc"
diff --git a/libopie2/opienet/opcap.cpp b/libopie2/opienet/opcap.cpp
index f6d05ea..523be3e 100644
--- a/libopie2/opienet/opcap.cpp
+++ b/libopie2/opienet/opcap.cpp
@@ -425,633 +425,633 @@ OWaveLanPacket::OWaveLanPacket( const unsigned char* end, const struct ieee_802_
qDebug( "MAC4: %s", (const char*) macAddress4().toString() );
switch ( type() )
{
case T_MGMT: new OWaveLanManagementPacket( end, (const struct ieee_802_11_mgmt_header*) data, this ); break;
case T_DATA: new OWaveLanDataPacket( end, (const struct ieee_802_11_data_header*) data, this ); break;
case T_CTRL: new OWaveLanControlPacket( end, (const struct ieee_802_11_control_header*) data, this ); break;
default: qDebug( "OWaveLanPacket::OWaveLanPacket(): Warning: Unknown major type '%d'!", type() );
}
}
OWaveLanPacket::~OWaveLanPacket()
{
}
int OWaveLanPacket::duration() const
{
return _wlanhdr->duration;
}
OMacAddress OWaveLanPacket::macAddress1() const
{
return OMacAddress( _wlanhdr->mac1 );
}
OMacAddress OWaveLanPacket::macAddress2() const
{
return OMacAddress( _wlanhdr->mac2 );
}
OMacAddress OWaveLanPacket::macAddress3() const
{
return OMacAddress( _wlanhdr->mac3 );
}
OMacAddress OWaveLanPacket::macAddress4() const
{
return OMacAddress( _wlanhdr->mac4 );
}
int OWaveLanPacket::subType() const
{
return FC_SUBTYPE( EXTRACT_LE_16BITS( &_wlanhdr->frame_control ) );
}
int OWaveLanPacket::type() const
{
return FC_TYPE( EXTRACT_LE_16BITS( &_wlanhdr->frame_control ) );
}
int OWaveLanPacket::version() const
{
return FC_VERSION( EXTRACT_LE_16BITS( &_wlanhdr->frame_control ) );
}
bool OWaveLanPacket::fromDS() const
{
return FC_FROM_DS( EXTRACT_LE_16BITS( &_wlanhdr->frame_control ) );
}
bool OWaveLanPacket::toDS() const
{
return FC_TO_DS( EXTRACT_LE_16BITS( &_wlanhdr->frame_control ) );
}
bool OWaveLanPacket::usesPowerManagement() const
{
return FC_POWER_MGMT( EXTRACT_LE_16BITS( &_wlanhdr->frame_control ) );
}
bool OWaveLanPacket::usesWep() const
{
return FC_WEP( EXTRACT_LE_16BITS( &_wlanhdr->frame_control ) );
}
/*======================================================================================
* OWaveLanManagementPacket
*======================================================================================*/
OWaveLanManagementPacket::OWaveLanManagementPacket( const unsigned char* end, const struct ieee_802_11_mgmt_header* data, OWaveLanPacket* parent )
:QObject( parent, "802.11 Management" ), _header( data ),
_body( (const struct ieee_802_11_mgmt_body*) (data+1) )
{
qDebug( "OWaveLanManagementPacket::OWaveLanManagementPacket(): decoding frame..." );
qDebug( "Detected subtype is '%s'", (const char*) managementType() );
// grab tagged values
const unsigned char* ptr = (const unsigned char*) (_body+1);
while (ptr < end)
{
switch ( *ptr )
{
case E_SSID: new OWaveLanManagementSSID( end, (struct ssid_t*) ptr, this ); break;
case E_FH: new OWaveLanManagementFH( end, (struct fh_t*) ptr, this ); break;
case E_DS: new OWaveLanManagementDS( end, (struct ds_t*) ptr, this ); break;
case E_RATES: new OWaveLanManagementRates( end, (struct rates_t*) ptr, this ); break;
case E_CF: new OWaveLanManagementCF( end, (struct cf_t*) ptr, this ); break;
case E_TIM: new OWaveLanManagementTim( end, (struct tim_t*) ptr, this ); break;
case E_IBSS: new OWaveLanManagementIBSS( end, (struct ibss_t*) ptr, this ); break;
case E_CHALLENGE: new OWaveLanManagementChallenge( end, (struct challenge_t*) ptr, this ); break;
}
ptr+= ( ( struct ssid_t* ) ptr )->length; // skip length of tagged value
ptr+= 2; // skip tag ID and length
}
}
OWaveLanManagementPacket::~OWaveLanManagementPacket()
{
}
QString OWaveLanManagementPacket::managementType() const
{
switch ( FC_SUBTYPE( EXTRACT_LE_16BITS( &_header->fc ) ) )
{
case ST_ASSOC_REQUEST: return "AssociationRequest"; break;
case ST_ASSOC_RESPONSE: return "AssociationResponse"; break;
case ST_REASSOC_REQUEST: return "ReassociationRequest"; break;
case ST_REASSOC_RESPONSE: return "ReassociationResponse"; break;
case ST_PROBE_REQUEST: return "ProbeRequest"; break;
case ST_PROBE_RESPONSE: return "ProbeResponse"; break;
case ST_BEACON: return "Beacon"; break;
case ST_ATIM: return "Atim"; break;
case ST_DISASSOC: return "Disassociation"; break;
case ST_AUTH: return "Authentication"; break;
case ST_DEAUTH: return "Deathentication"; break;
default:
qWarning( "OWaveLanManagementPacket::managementType(): unhandled subtype %d", FC_SUBTYPE( EXTRACT_LE_16BITS( &_header->fc ) ) );
return "Unknown";
}
}
int OWaveLanManagementPacket::beaconInterval() const
{
return EXTRACT_LE_16BITS( &_body->beacon_interval );
}
int OWaveLanManagementPacket::capabilities() const
{
return EXTRACT_LE_16BITS( &_body->capability_info );
}
bool OWaveLanManagementPacket::canESS() const
{
return CAPABILITY_ESS( EXTRACT_LE_16BITS( &_body->capability_info ) );
}
bool OWaveLanManagementPacket::canIBSS() const
{
return CAPABILITY_IBSS( EXTRACT_LE_16BITS( &_body->capability_info ) );
}
bool OWaveLanManagementPacket::canCFP() const
{
return CAPABILITY_CFP( EXTRACT_LE_16BITS( &_body->capability_info ) );
}
bool OWaveLanManagementPacket::canCFP_REQ() const
{
return CAPABILITY_CFP_REQ( EXTRACT_LE_16BITS( &_body->capability_info ) );
}
bool OWaveLanManagementPacket::canPrivacy() const
{
return CAPABILITY_PRIVACY( EXTRACT_LE_16BITS( &_body->capability_info ) );
}
/*======================================================================================
* OWaveLanManagementSSID
*======================================================================================*/
OWaveLanManagementSSID::OWaveLanManagementSSID( const unsigned char* end, const struct ssid_t* data, QObject* parent )
:QObject( parent, "802.11 SSID" ), _data( data )
{
qDebug( "OWaveLanManagementSSID()" );
}
OWaveLanManagementSSID::~OWaveLanManagementSSID()
{
}
QString OWaveLanManagementSSID::ID() const
{
int length = _data->length;
if ( length > 32 ) length = 32;
char essid[length+1];
memcpy( &essid, &_data->ssid, length );
essid[length] = 0x0;
return essid;
}
/*======================================================================================
* OWaveLanManagementRates
*======================================================================================*/
OWaveLanManagementRates::OWaveLanManagementRates( const unsigned char* end, const struct rates_t* data, QObject* parent )
:QObject( parent, "802.11 Rates" ), _data( data )
{
qDebug( "OWaveLanManagementRates()" );
}
OWaveLanManagementRates::~OWaveLanManagementRates()
{
}
/*======================================================================================
* OWaveLanManagementCF
*======================================================================================*/
OWaveLanManagementCF::OWaveLanManagementCF( const unsigned char* end, const struct cf_t* data, QObject* parent )
:QObject( parent, "802.11 CF" ), _data( data )
{
qDebug( "OWaveLanManagementCF()" );
}
OWaveLanManagementCF::~OWaveLanManagementCF()
{
}
/*======================================================================================
* OWaveLanManagementFH
*======================================================================================*/
OWaveLanManagementFH::OWaveLanManagementFH( const unsigned char* end, const struct fh_t* data, QObject* parent )
:QObject( parent, "802.11 FH" ), _data( data )
{
qDebug( "OWaveLanManagementFH()" );
}
OWaveLanManagementFH::~OWaveLanManagementFH()
{
}
/*======================================================================================
* OWaveLanManagementDS
*======================================================================================*/
OWaveLanManagementDS::OWaveLanManagementDS( const unsigned char* end, const struct ds_t* data, QObject* parent )
:QObject( parent, "802.11 DS" ), _data( data )
{
qDebug( "OWaveLanManagementDS()" );
}
OWaveLanManagementDS::~OWaveLanManagementDS()
{
}
int OWaveLanManagementDS::channel() const
{
return _data->channel;
}
/*======================================================================================
* OWaveLanManagementTim
*======================================================================================*/
OWaveLanManagementTim::OWaveLanManagementTim( const unsigned char* end, const struct tim_t* data, QObject* parent )
:QObject( parent, "802.11 Tim" ), _data( data )
{
qDebug( "OWaveLanManagementTim()" );
}
OWaveLanManagementTim::~OWaveLanManagementTim()
{
}
/*======================================================================================
* OWaveLanManagementIBSS
*======================================================================================*/
OWaveLanManagementIBSS::OWaveLanManagementIBSS( const unsigned char* end, const struct ibss_t* data, QObject* parent )
:QObject( parent, "802.11 IBSS" ), _data( data )
{
qDebug( "OWaveLanManagementIBSS()" );
}
OWaveLanManagementIBSS::~OWaveLanManagementIBSS()
{
}
/*======================================================================================
* OWaveLanManagementChallenge
*======================================================================================*/
OWaveLanManagementChallenge::OWaveLanManagementChallenge( const unsigned char* end, const struct challenge_t* data, QObject* parent )
:QObject( parent, "802.11 Challenge" ), _data( data )
{
qDebug( "OWaveLanManagementChallenge()" );
}
OWaveLanManagementChallenge::~OWaveLanManagementChallenge()
{
}
/*======================================================================================
* OWaveLanDataPacket
*======================================================================================*/
OWaveLanDataPacket::OWaveLanDataPacket( const unsigned char* end, const struct ieee_802_11_data_header* data, OWaveLanPacket* parent )
:QObject( parent, "802.11 Data" ), _header( data )
{
qDebug( "OWaveLanDataPacket::OWaveLanDataPacket(): decoding frame..." );
const unsigned char* payload = (const unsigned char*) data + sizeof( struct ieee_802_11_data_header );
#warning The next line works for most cases, but can not be correct generally!
if (!( ( (OWaveLanPacket*) this->parent())->duration() )) payload -= 6; // compensation for missing last address
new OLLCPacket( end, (const struct ieee_802_11_802_2_header*) payload, this );
}
OWaveLanDataPacket::~OWaveLanDataPacket()
{
}
/*======================================================================================
* OLLCPacket
*======================================================================================*/
OLLCPacket::OLLCPacket( const unsigned char* end, const struct ieee_802_11_802_2_header* data, QObject* parent )
:QObject( parent, "802.11 LLC" ), _header( data )
{
qDebug( "OLLCPacket::OLLCPacket(): decoding frame..." );
if ( !(_header->oui[0] || _header->oui[1] || _header->oui[2]) )
{
qDebug( "OLLCPacket::OLLCPacket(): contains an encapsulated Ethernet frame (type=%04X)", EXTRACT_16BITS( &_header->type ) );
switch ( EXTRACT_16BITS( &_header->type ) ) // defined in linux/if_ether.h
{
case ETH_P_IP: new OIPPacket( end, (const struct iphdr*) (data+1), this ); break;
case ETH_P_ARP: new OARPPacket( end, (const struct myarphdr*) (data+1), this ); break;
default: qWarning( "OLLCPacket::OLLCPacket(): Unknown Encapsulation (type=%04X)", EXTRACT_16BITS( &_header->type ) );
}
}
}
OLLCPacket::~OLLCPacket()
{
}
/*======================================================================================
* OWaveLanControlPacket
*======================================================================================*/
OWaveLanControlPacket::OWaveLanControlPacket( const unsigned char* end, const struct ieee_802_11_control_header* data, OWaveLanPacket* parent )
- :QObject( parent, "802.11 Data" ), _header( data )
+ :QObject( parent, "802.11 Control" ), _header( data )
{
qDebug( "OWaveLanControlPacket::OWaveLanDataControl(): decoding frame..." );
//TODO: Implement this
}
OWaveLanControlPacket::~OWaveLanControlPacket()
{
}
/*======================================================================================
* OPacketCapturer
*======================================================================================*/
OPacketCapturer::OPacketCapturer( QObject* parent, const char* name )
:QObject( parent, name ), _name( QString::null ), _open( false ),
_pch( 0 ), _pcd( 0 ), _sn( 0 )
{
}
OPacketCapturer::~OPacketCapturer()
{
if ( _open )
{
qDebug( "OPacketCapturer::~OPacketCapturer(): pcap still open, autoclosing." );
close();
}
}
void OPacketCapturer::setBlocking( bool b )
{
if ( pcap_setnonblock( _pch, 1-b, _errbuf ) != -1 )
{
qDebug( "OPacketCapturer::setBlocking(): blocking mode changed successfully." );
}
else
{
qDebug( "OPacketCapturer::setBlocking(): can't change blocking mode: %s", _errbuf );
}
}
bool OPacketCapturer::blocking() const
{
int b = pcap_getnonblock( _pch, _errbuf );
if ( b == -1 )
{
qDebug( "OPacketCapturer::blocking(): can't get blocking mode: %s", _errbuf );
return -1;
}
return !b;
}
void OPacketCapturer::close()
{
if ( _open )
{
if ( _sn )
{
_sn->disconnect( SIGNAL( activated(int) ), this, SLOT( readyToReceive() ) );
delete _sn;
}
if ( _pcd )
{
pcap_dump_close( _pcd );
_pcd = 0;
}
pcap_close( _pch );
_open = false;
}
qDebug( "OPacketCapturer::close() --- dumping capturing statistics..." );
qDebug( "--------------------------------------------------" );
for( QMap<QString,int>::Iterator it = _stats.begin(); it != _stats.end(); ++it )
qDebug( "%s : %d", (const char*) it.key(), it.data() );
qDebug( "--------------------------------------------------" );
}
int OPacketCapturer::dataLink() const
{
return pcap_datalink( _pch );
}
int OPacketCapturer::fileno() const
{
if ( _open )
{
return pcap_fileno( _pch );
}
else
{
return -1;
}
}
OPacket* OPacketCapturer::next()
{
packetheaderstruct header;
qDebug( "==> OPacketCapturer::next()" );
const unsigned char* pdata = pcap_next( _pch, &header );
qDebug( "<== OPacketCapturer::next()" );
if ( _pcd )
pcap_dump( (u_char*) _pcd, &header, pdata );
if ( pdata && header.len )
{
OPacket* p = new OPacket( dataLink(), header, pdata, 0 );
// packets shouldn't be inserted in the QObject child-parent hierarchy,
// because due to memory constraints they will be deleted as soon
// as possible - that is right after they have been processed
// by emit() [ see below ]
//TODO: make gathering statistics optional, because it takes time
p->updateStats( _stats, const_cast<QObjectList*>( p->children() ) );
return p;
}
else
{
qWarning( "OPacketCapturer::next() - no packet received!" );
return 0;
}
}
bool OPacketCapturer::open( const QString& name, const QString& filename )
{
if ( _open )
{
if ( name == _name ) // ignore opening an already openend device
{
return true;
}
else // close the last opened device
{
close();
}
}
_name = name;
// open libpcap
pcap_t* handle = pcap_open_live( const_cast<char*>( (const char*) name ), 1024, 0, 0, &_errbuf[0] );
if ( !handle )
{
qWarning( "OPacketCapturer::open(): can't open libpcap with '%s': %s", (const char*) name, _errbuf );
return false;
}
qDebug( "OPacketCapturer::open(): libpcap [%s] opened successfully.", (const char*) name );
_pch = handle;
_open = true;
_stats.clear();
// in case we have an application object, create a socket notifier
if ( qApp ) //TODO: I don't like this here...
{
_sn = new QSocketNotifier( fileno(), QSocketNotifier::Read );
connect( _sn, SIGNAL( activated(int) ), this, SLOT( readyToReceive() ) );
}
// if requested, open a dump
pcap_dumper_t* dump = pcap_dump_open( _pch, const_cast<char*>( (const char*) filename ) );
if ( !dump )
{
qWarning( "OPacketCapturer::open(): can't open dump with '%s': %s", (const char*) filename, _errbuf );
return false;
}
qDebug( "OPacketCapturer::open(): dump [%s] opened successfully.", (const char*) filename );
_pcd = dump;
return true;
}
bool OPacketCapturer::open( const QFile& file )
{
QString name = file.name();
if ( _open )
{
close();
if ( name == _name ) // ignore opening an already openend device
{
return true;
}
else // close the last opened device
{
close();
}
}
_name = name;
pcap_t* handle = pcap_open_offline( const_cast<char*>( (const char*) name ), &_errbuf[0] );
if ( handle )
{
qDebug( "OPacketCapturer::open(): libpcap opened successfully." );
_pch = handle;
_open = true;
// in case we have an application object, create a socket notifier
if ( qApp )
{
_sn = new QSocketNotifier( fileno(), QSocketNotifier::Read );
connect( _sn, SIGNAL( activated(int) ), this, SLOT( readyToReceive() ) );
}
return true;
}
else
{
qDebug( "OPacketCapturer::open(): can't open libpcap with '%s': %s", (const char*) name, _errbuf );
return false;
}
}
bool OPacketCapturer::isOpen() const
{
return _open;
}
void OPacketCapturer::readyToReceive()
{
qDebug( "OPacketCapturer::readyToReceive(): about to emit 'receivePacket(p)'" );
OPacket* p = next();
emit receivedPacket( p );
// emit is synchronous - packet has been dealt with, now it's safe to delete
delete p;
}
const QMap<QString,int>& OPacketCapturer::statistics() const
{
return _stats;
}