| -rw-r--r-- | libopie2/opienet/opcap.cpp | 40 | ||||
| -rw-r--r-- | libopie2/opienet/opcap.h | 7 |
2 files changed, 43 insertions, 4 deletions
diff --git a/libopie2/opienet/opcap.cpp b/libopie2/opienet/opcap.cpp index 5c464cf..6a3dc26 100644 --- a/libopie2/opienet/opcap.cpp +++ b/libopie2/opienet/opcap.cpp @@ -30,24 +30,25 @@ Boston, MA 02111-1307, USA. */ /* OPIE */ #include <opie2/opcap.h> /* QT */ #include <qapplication.h> // don't use oapplication here (will decrease reusability in other projects) #include <qsocketnotifier.h> +#include <qobjectlist.h> /*====================================================================================== * OPacket *======================================================================================*/ OPacket::OPacket( int datalink, packetheaderstruct header, const unsigned char* data, QObject* parent ) :QObject( parent, "Generic" ), _hdr( header ), _data( data ) { //qDebug( "OPacket::OPacket(): (Len %d, CapLen %d)" /*, ctime((const time_t*) header.ts.tv_sec)*/, header.len, header.caplen ); _end = (unsigned char*) data + header.len; //qDebug( "OPacket::data @ %0x, end @ %0x", data, _end ); @@ -78,24 +79,37 @@ OPacket::~OPacket() timevalstruct OPacket::timeval() const { return _hdr.ts; } int OPacket::caplen() const { return _hdr.caplen; } +void OPacket::updateStats( QMap<QString,int>& stats, QObjectList* l ) +{ + if (!l) return; + QObject* o = l->first(); + while ( o ) + { + stats[o->name()]++; + updateStats( stats, const_cast<QObjectList*>( o->children() ) ); + o = l->next(); + } +} + + QString OPacket::dump( int bpl ) const { static int index = 0; index++; int len = _hdr.caplen; QString str; str.sprintf( "\n<----- Packet #%04d Len = 0x%X (%d) ----->\n\n", index, len, len ); str.append( "0000: " ); QString tmp; QString bytes; QString chars; @@ -118,30 +132,30 @@ QString OPacket::dump( int bpl ) const } if ( (len % bpl) ) { str.append( bytes.leftJustify( 1 + 3*bpl ) ); str.append( chars ); } str.append( '\n' ); return str; } - int OPacket::len() const { return _hdr.len; } + /*====================================================================================== * OEthernetPacket *======================================================================================*/ OEthernetPacket::OEthernetPacket( const unsigned char* end, const struct ether_header* data, QObject* parent ) :QObject( parent, "Ethernet" ), _ether( data ) { qDebug( "Source = %s", (const char*) sourceAddress().toString() ); qDebug( "Destination = %s", (const char*) destinationAddress().toString() ); @@ -763,60 +777,71 @@ bool OPacketCapturer::blocking() const void OPacketCapturer::close() { if ( _open ) { if ( _sn ) { _sn->disconnect( SIGNAL( activated(int) ), this, SLOT( readyToReceive() ) ); delete _sn; } 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 ( header.len ) { - return new OPacket( dataLink(), header, pdata, 0 ); + 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 { return 0; } } bool OPacketCapturer::open( const QString& name ) { if ( _open ) { @@ -830,24 +855,25 @@ bool OPacketCapturer::open( const QString& name ) } } _name = name; pcap_t* handle = pcap_open_live( const_cast<char*>( (const char*) name ), 1024, 0, 0, &_errbuf[0] ); if ( handle ) { qDebug( "OPacketCapturer::open(): libpcap opened successfully." ); _pch = handle; _open = true; + _stats.clear(); // 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 { @@ -857,19 +883,25 @@ bool OPacketCapturer::open( const QString& name ) } bool OPacketCapturer::isOpen() const { return _open; } void OPacketCapturer::readyToReceive() { - qDebug( "OPacketCapturer::readyToReceive(): about to emit 'receivePacket(...)'" ); + 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; +} + diff --git a/libopie2/opienet/opcap.h b/libopie2/opienet/opcap.h index ddef278..c9b0624 100644 --- a/libopie2/opienet/opcap.h +++ b/libopie2/opienet/opcap.h @@ -37,27 +37,29 @@ /* LINUX */ extern "C" // work around a bpf/pcap conflict in recent headers { #include <pcap.h> } #include <netinet/ether.h> #include <netinet/ip.h> #include <netinet/udp.h> #include <netinet/tcp.h> #include <time.h> /* QT */ +#include <qevent.h> #include <qhostaddress.h> #include <qobject.h> #include <qstring.h> +#include <qmap.h> /* OPIE */ #include <opie2/onetutils.h> #include "802_11_user.h" /* TYPEDEFS */ typedef struct timeval timevalstruct; typedef struct pcap_pkthdr packetheaderstruct; /* FORWARDS */ class OPacketCapturer; class QSocketNotifier; @@ -71,24 +73,26 @@ class OPacket : public QObject Q_OBJECT public: OPacket( int datalink, packetheaderstruct, const unsigned char*, QObject* parent ); virtual ~OPacket(); timevalstruct timeval() const; int caplen() const; int len() const; QString dump( int = 32 ) const; + void updateStats( QMap<QString,int>&, QObjectList* ); + private: const packetheaderstruct _hdr; // pcap packet header const unsigned char* _data; // pcap packet data const unsigned char* _end; // end of pcap packet data }; /*====================================================================================== * OEthernetPacket - DLT_EN10MB frame *======================================================================================*/ class OEthernetPacket : public QObject { @@ -425,28 +429,31 @@ class OPacketCapturer : public QObject ~OPacketCapturer(); void setBlocking( bool ); bool blocking() const; void close(); int dataLink() const; int fileno() const; OPacket* next(); bool open( const QString& name ); bool isOpen() const; + const QMap<QString,int>& statistics() const; + signals: void receivedPacket( OPacket* ); protected slots: void readyToReceive(); protected: QString _name; // devicename bool _open; // check this before doing pcap calls pcap_t* _pch; // pcap library handle QSocketNotifier* _sn; // socket notifier for main loop mutable char _errbuf[PCAP_ERRBUF_SIZE]; + QMap<QString, int> _stats; // statistics; }; #endif // OPCAP_H |