| -rw-r--r-- | libopie2/opienet/opcap.cpp | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/libopie2/opienet/opcap.cpp b/libopie2/opienet/opcap.cpp index 93176c0..067d6b7 100644 --- a/libopie2/opienet/opcap.cpp +++ b/libopie2/opienet/opcap.cpp @@ -1,284 +1,287 @@ /* This file is part of the Opie Project - Copyright (C) 2003 by Michael 'Mickey' Lauer <mickey@Vanille.de> + Copyright (C) 2003-2004 by Michael 'Mickey' Lauer <mickey@Vanille.de> =. .=l. .>+-= _;:, .> :=|. This program is free software; you can .> <`_, > . <= redistribute it and/or modify it under :`=1 )Y*s>-.-- : the terms of the GNU Library General Public .="- .-=="i, .._ License as published by the Free Software - . .-<_> .<> Foundation; either version 2 of the License, ._= =} : or (at your option) any later version. .%`+i> _;_. .i_,=:_. -<s. 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 ..}^=.= = ; Library General Public License for more ++= -. .` .: details. : = ...= . :.=- -. .:....=;==+<; You should have received a copy of the GNU -_. . . )=. = Library General Public License along with -- :-=` this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include "udp_ports.h" +#include "opcap.h" + /* OPIE */ -#include <opie2/opcap.h> #include <opie2/odebug.h> +using namespace Opie::Core; /* QT */ #include <qapplication.h> // don't use oapplication here (will decrease reusability in other projects) #include <qsocketnotifier.h> #include <qobjectlist.h> -/* SYSTEM */ +/* STD */ #include <sys/time.h> #include <sys/types.h> +#include <assert.h> #include <unistd.h> - -/* LOCAL */ -#include "udp_ports.h" - -using namespace Opie::Core; +#include <string.h> namespace Opie { namespace Net { /*====================================================================================== * OPacket *======================================================================================*/ OPacket::OPacket( int datalink, packetheaderstruct header, const unsigned char* data, QObject* parent ) - :QObject( parent, "Generic" ), _hdr( header ), _data( data ) + :QObject( parent, "Generic" ), _hdr( header ), _data( 0 ) { - //FIXME: Copy the data structure here, because it isn't persistent. Check that. - - 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 ); + _data = new unsigned char[sizeof data]; + assert( _data ); + memcpy( const_cast<unsigned char*>(_data), data, sizeof data ); + // We have to copy the data structure here, because the 'data' pointer handed by libpcap + // points to an internal region which is reused by lipcap. + odebug << "OPacket: Length = " << header.len << ", Caplen = " << header.caplen << oendl; + _end = (unsigned char*) _data + header.len; switch ( datalink ) { case DLT_EN10MB: odebug << "OPacket::OPacket(): Received Packet. Datalink = ETHERNET" << oendl; - new OEthernetPacket( _end, (const struct ether_header*) data, this ); + new OEthernetPacket( _end, (const struct ether_header*) _data, this ); break; case DLT_IEEE802_11: odebug << "OPacket::OPacket(): Received Packet. Datalink = IEEE802.11" << oendl; - new OWaveLanPacket( _end, (const struct ieee_802_11_header*) data, this ); + new OWaveLanPacket( _end, (const struct ieee_802_11_header*) _data, this ); break; case DLT_PRISM_HEADER: odebug << "OPacket::OPacket(): Received Packet. Datalink = PRISM_HEADER" << oendl; - new OPrismHeaderPacket( _end, (const struct prism_hdr*) (unsigned char*) data, this ); + new OPrismHeaderPacket( _end, (const struct prism_hdr*) (unsigned char*) _data, this ); break; default: owarn << "OPacket::OPacket(): Received Packet over unsupported datalink, type " << datalink << "!" << oendl; } } OPacket::~OPacket() { - qDebug( "OPacket::~OPacket( %s )", name() ); + odebug << "~OPacket( " << name() << " )" << oendl; + delete _data; } 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::dumpStructure() const { return "[ |" + _dumpStructure( const_cast<QObjectList*>( this->children() ) ) + " ]"; } QString OPacket::_dumpStructure( QObjectList* l ) const { if (!l) return QString::null; QObject* o = l->first(); QString str(" "); while ( o ) { str.append( o->name() ); str.append( " |" ); str += _dumpStructure( const_cast<QObjectList*>( o->children() ) ); o = l->next(); } return str; } 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; for ( int i = 0; i < len; ++i ) { tmp.sprintf( "%02X ", _data[i] ); bytes.append( tmp ); if ( (_data[i] > 31) && (_data[i]<128) ) chars.append( _data[i] ); else chars.append( '.' ); if ( !((i+1) % bpl) ) { str.append( bytes ); str.append( ' ' ); str.append( chars ); str.append( '\n' ); tmp.sprintf( "%04X: ", i+1 ); str.append( tmp ); bytes = ""; chars = ""; } } 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; } QTextStream& operator<<( QTextStream& s, const OPacket& p ) { s << p.dumpStructure(); } /*====================================================================================== * OEthernetPacket *======================================================================================*/ OEthernetPacket::OEthernetPacket( const unsigned char* end, const struct ether_header* data, QObject* parent ) :QObject( parent, "Ethernet" ), _ether( data ) { odebug << "Source = " << sourceAddress().toString(); odebug << "Destination = " << destinationAddress().toString(); if ( sourceAddress() == OMacAddress::broadcast ) odebug << "Source is broadcast address" << oendl; if ( destinationAddress() == OMacAddress::broadcast ) odebug << "Destination is broadcast address" << oendl; switch ( type() ) { case ETHERTYPE_IP: new OIPPacket( end, (const struct iphdr*) (data+1), this ); break; case ETHERTYPE_ARP: new OARPPacket( end, (const struct myarphdr*) (data+1), this ); break; case ETHERTYPE_REVARP: { odebug << "OPacket::OPacket(): Received Ethernet Packet : Type = RARP" << oendl; break; } default: odebug << "OPacket::OPacket(): Received Ethernet Packet : Type = UNKNOWN" << oendl; } } OEthernetPacket::~OEthernetPacket() { } OMacAddress OEthernetPacket::sourceAddress() const { return OMacAddress( _ether->ether_shost ); } OMacAddress OEthernetPacket::destinationAddress() const { return OMacAddress( _ether->ether_dhost ); } int OEthernetPacket::type() const { return ntohs( _ether->ether_type ); } /*====================================================================================== * OIPPacket *======================================================================================*/ OIPPacket::OIPPacket( const unsigned char* end, const struct iphdr* data, QObject* parent ) :QObject( parent, "IP" ), _iphdr( data ) { odebug << "OIPPacket::OIPPacket(): decoding IP header..." << oendl; odebug << "FromAddress = " << fromIPAddress().toString() << oendl; odebug << " toAddress = " << toIPAddress().toString() << oendl; switch ( protocol() ) { case IPPROTO_UDP: new OUDPPacket( end, (const struct udphdr*) (data+1), this ); break; case IPPROTO_TCP: new OTCPPacket( end, (const struct tcphdr*) (data+1), this ); break; default: odebug << "OIPPacket::OIPPacket(): unknown IP protocol, type = " << protocol() << oendl; } } OIPPacket::~OIPPacket() { } QHostAddress OIPPacket::fromIPAddress() const { return EXTRACT_32BITS( &_iphdr->saddr ); } QHostAddress OIPPacket::toIPAddress() const { return EXTRACT_32BITS( &_iphdr->saddr ); } int OIPPacket::tos() const { |