implements a statistic interface for OPacketCapturer

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
@@ -36,12 +36,13 @@
 #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 )
@@ -84,12 +85,25 @@ timevalstruct OPacket::timeval() const
 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;
@@ -124,18 +138,18 @@ QString OPacket::dump( int bpl ) const
     }
     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 )
@@ -769,12 +783,19 @@ void OPacketCapturer::close()
             _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 );
@@ -790,27 +811,31 @@ int OPacketCapturer::fileno() const
     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;
     }
 }
@@ -836,12 +861,13 @@ bool OPacketCapturer::open( const QString& name )
 
     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() ) );
@@ -863,13 +889,19 @@ 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
@@ -43,15 +43,17 @@ extern "C"  // work around a bpf/pcap conflict in recent headers
 #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 */
@@ -77,12 +79,14 @@ class OPacket : public QObject
     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
 };
 
@@ -431,22 +435,25 @@ class OPacketCapturer : public QObject
     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