| -rw-r--r-- | libopie2/opienet/opcap.cpp | 33 | ||||
| -rw-r--r-- | libopie2/opienet/opcap.h | 4 |
2 files changed, 27 insertions, 10 deletions
diff --git a/libopie2/opienet/opcap.cpp b/libopie2/opienet/opcap.cpp index 30f6208..04b1bb1 100644 --- a/libopie2/opienet/opcap.cpp +++ b/libopie2/opienet/opcap.cpp @@ -731,13 +731,13 @@ OWaveLanControlPacket::~OWaveLanControlPacket() /*====================================================================================== * OPacketCapturer *======================================================================================*/ OPacketCapturer::OPacketCapturer( QObject* parent, const char* name ) :QObject( parent, name ), _name( QString::null ), _open( false ), - _pch( 0 ), _sn( 0 ) + _pch( 0 ), _pcd( 0 ), _sn( 0 ) { } OPacketCapturer::~OPacketCapturer() { @@ -780,12 +780,17 @@ void OPacketCapturer::close() { 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( "--------------------------------------------------" ); @@ -817,12 +822,14 @@ int OPacketCapturer::fileno() const 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 ( 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 @@ -837,13 +844,13 @@ OPacket* OPacketCapturer::next() { return 0; } } -bool OPacketCapturer::open( const QString& name ) +bool OPacketCapturer::open( const QString& name, const QString& filename ) { if ( _open ) { if ( name == _name ) // ignore opening an already openend device { return true; @@ -853,36 +860,44 @@ bool OPacketCapturer::open( const QString& name ) close(); } } _name = name; + // open libpcap pcap_t* handle = pcap_open_live( const_cast<char*>( (const char*) name ), 1024, 0, 0, &_errbuf[0] ); - if ( handle ) + if ( !handle ) { - qDebug( "OPacketCapturer::open(): libpcap opened successfully." ); + 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 ) + if ( qApp ) //TODO: I don't like this here... { _sn = new QSocketNotifier( fileno(), QSocketNotifier::Read ); connect( _sn, SIGNAL( activated(int) ), this, SLOT( readyToReceive() ) ); } - return true; - } - else + // if requested, open a dump + pcap_dumper_t* dump = pcap_dump_open( _pch, const_cast<char*>( (const char*) filename ) ); + if ( !dump ) { - qDebug( "OPacketCapturer::open(): can't open libpcap with '%s': %s", (const char*) name, _errbuf ); + 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(); diff --git a/libopie2/opienet/opcap.h b/libopie2/opienet/opcap.h index 6c3ac6d..99631ba 100644 --- a/libopie2/opienet/opcap.h +++ b/libopie2/opienet/opcap.h @@ -467,14 +467,15 @@ class OPacketCapturer : public QObject * @returns the next @ref OPacket from the packet capturer. * @note If blocking mode is true then this call might block. */ OPacket* next(); /** * Open the packet capturer to capture packets in live-mode from @a interface. + * If a @a filename is given, all captured packets are output to a tcpdump-compatible capture file. */ - bool open( const QString& interface ); + bool open( const QString& interface, const QString& filename = QString::null ); /** * Open the packet capturer to capture packets in offline-mode from @a file. */ bool open( const QFile& file ); /** * @returns true if the packet capturer is open @@ -493,12 +494,13 @@ class OPacketCapturer : public QObject void readyToReceive(); protected: QString _name; // devicename bool _open; // check this before doing pcap calls pcap_t* _pch; // pcap library handle + pcap_dumper_t* _pcd; // pcap dumper handle QSocketNotifier* _sn; // socket notifier for main loop mutable char _errbuf[PCAP_ERRBUF_SIZE]; // holds error strings from libpcap QMap<QString, int> _stats; // statistics; }; #endif // OPCAP_H |