| -rw-r--r-- | libopie2/opienet/opcap.cpp | 19 | ||||
| -rw-r--r-- | libopie2/opienet/opcap.h | 35 |
2 files changed, 31 insertions, 23 deletions
diff --git a/libopie2/opienet/opcap.cpp b/libopie2/opienet/opcap.cpp index 7463320..fdd519c 100644 --- a/libopie2/opienet/opcap.cpp +++ b/libopie2/opienet/opcap.cpp @@ -1,565 +1,570 @@ /* This file is part of the Opie Project Copyright (C) 2003 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. */ /* OPIE */ #include <opie2/opcap.h> #include <opie2/odebug.h> /* QT */ #include <qapplication.h> // don't use oapplication here (will decrease reusability in other projects) #include <qsocketnotifier.h> #include <qobjectlist.h> /* SYSTEM */ #include <sys/time.h> #include <sys/types.h> #include <unistd.h> /* LOCAL */ #include "udp_ports.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 ); switch ( datalink ) { case DLT_EN10MB: odebug << "OPacket::OPacket(): Received Packet. Datalink = ETHERNET" << oendl; 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 ); 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 ); break; default: owarn << "OPacket::OPacket(): Received Packet over unsupported datalink, type " << datalink << "!" << oendl; } } 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(); } } -void OPacket::dumpStructure( QObjectList* l ) +QString OPacket::dumpStructure() const { - QString packetString( "[ |" + _dumpStructure( l ) + " ]" ); - odebug << "OPacket::dumpStructure: " << packetString << oendl; + return "[ |" + _dumpStructure( const_cast<QObjectList*>( this->children() ) ) + " ]"; } -QString OPacket::_dumpStructure( QObjectList* l ) +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 { return _iphdr->tos; } int OIPPacket::len() const { return EXTRACT_16BITS( &_iphdr->tot_len ); } int OIPPacket::id() const { return EXTRACT_16BITS( &_iphdr->id ); } int OIPPacket::offset() const { return EXTRACT_16BITS( &_iphdr->frag_off ); } int OIPPacket::ttl() const { return _iphdr->ttl; } int OIPPacket::protocol() const { return _iphdr->protocol; } int OIPPacket::checksum() const { return EXTRACT_16BITS( &_iphdr->check ); } /*====================================================================================== * OARPPacket *======================================================================================*/ OARPPacket::OARPPacket( const unsigned char* end, const struct myarphdr* data, QObject* parent ) :QObject( parent, "ARP" ), _arphdr( data ) { odebug << "OARPPacket::OARPPacket(): decoding ARP header..." << oendl; odebug << "ARP type seems to be " << EXTRACT_16BITS( &_arphdr->ar_op ) << " = " << type() << oendl; odebug << "Sender: MAC " << senderMacAddress().toString() << " = IP " << senderIPV4Address().toString() << oendl; odebug << "Target: MAC " << targetMacAddress().toString() << " = IP " << targetIPV4Address().toString() << oendl; } OARPPacket::~OARPPacket() { } QString OARPPacket::type() const { switch ( EXTRACT_16BITS( &_arphdr->ar_op ) ) { case 1: return "REQUEST"; case 2: return "REPLY"; case 3: return "RREQUEST"; case 4: return "RREPLY"; case 8: return "InREQUEST"; case 9: return "InREPLY"; case 10: return "NAK"; default: owarn << "OARPPacket::type(): invalid ARP type!" << oendl; return "<unknown>"; } } QHostAddress OARPPacket::senderIPV4Address() const { return EXTRACT_32BITS( &_arphdr->ar_sip ); } QHostAddress OARPPacket::targetIPV4Address() const { return EXTRACT_32BITS( &_arphdr->ar_tip ); } OMacAddress OARPPacket::senderMacAddress() const { return OMacAddress( _arphdr->ar_sha ); } OMacAddress OARPPacket::targetMacAddress() const { return OMacAddress( _arphdr->ar_tha ); } /*====================================================================================== * OUDPPacket *======================================================================================*/ OUDPPacket::OUDPPacket( const unsigned char* end, const struct udphdr* data, QObject* parent ) :QObject( parent, "UDP" ), _udphdr( data ) { odebug << "OUDPPacket::OUDPPacket(): decoding UDP header..." << oendl; odebug << "fromPort = " << fromPort() << oendl; odebug << " toPort = " << toPort() << oendl; // TODO: Make this a case or a hash if we know more udp protocols if ( fromPort() == UDP_PORT_BOOTPS || fromPort() == UDP_PORT_BOOTPC || toPort() == UDP_PORT_BOOTPS || toPort() == UDP_PORT_BOOTPC ) { odebug << "seems to be part of a DHCP conversation => creating DHCP packet." << oendl; new ODHCPPacket( end, (const struct dhcp_packet*) (data+1), this ); } } OUDPPacket::~OUDPPacket() { } int OUDPPacket::fromPort() const { return EXTRACT_16BITS( &_udphdr->source ); } int OUDPPacket::toPort() const { return EXTRACT_16BITS( &_udphdr->dest ); } int OUDPPacket::length() const { return EXTRACT_16BITS( &_udphdr->len ); } int OUDPPacket::checksum() const { return EXTRACT_16BITS( &_udphdr->check ); } /*====================================================================================== * ODHCPPacket *======================================================================================*/ ODHCPPacket::ODHCPPacket( const unsigned char* end, const struct dhcp_packet* data, QObject* parent ) :QObject( parent, "DHCP" ), _dhcphdr( data ) { odebug << "ODHCPPacket::ODHCPPacket(): decoding DHCP information..." << oendl; odebug << "DHCP opcode seems to be " << _dhcphdr->op << ": " << ( isRequest() ? "REQUEST" : "REPLY" ) << oendl; odebug << "clientAddress = " << clientAddress().toString() << oendl; odebug << " yourAddress = " << yourAddress().toString() << oendl; odebug << "serverAddress = " << serverAddress().toString() << oendl; odebug << " relayAddress = " << relayAddress().toString() << oendl; odebug << "parsing DHCP options..." << oendl; _type = 0; const unsigned char* option = &_dhcphdr->options[4]; char tag = -1; char len = -1; while ( ( tag = *option++ ) != -1 /* end of option field */ ) { len = *option++; odebug << "recognized DHCP option #" << tag << ", length " << len << oendl; if ( tag == DHO_DHCP_MESSAGE_TYPE ) _type = *option; option += len; if ( option >= end ) { owarn << "DHCP parsing ERROR: sanity check says the packet is at its end!" << oendl; break; } } odebug << "DHCP type seems to be << " << type() << oendl; } ODHCPPacket::~ODHCPPacket() { } bool ODHCPPacket::isRequest() const { return ( _dhcphdr->op == 01 ); } bool ODHCPPacket::isReply() const { return ( _dhcphdr->op == 02 ); } QString ODHCPPacket::type() const { switch ( _type ) { case 1: return "DISCOVER"; case 2: return "OFFER"; case 3: return "REQUEST"; case 4: return "DECLINE"; case 5: return "ACK"; case 6: return "NAK"; case 7: return "RELEASE"; case 8: return "INFORM"; default: owarn << "ODHCPPacket::type(): invalid DHCP type " << _dhcphdr->op << oendl; return "<unknown>"; } } QHostAddress ODHCPPacket::clientAddress() const { return EXTRACT_32BITS( &_dhcphdr->ciaddr ); } QHostAddress ODHCPPacket::yourAddress() const { return EXTRACT_32BITS( &_dhcphdr->yiaddr ); } QHostAddress ODHCPPacket::serverAddress() const { return EXTRACT_32BITS( &_dhcphdr->siaddr ); } QHostAddress ODHCPPacket::relayAddress() const { return EXTRACT_32BITS( &_dhcphdr->giaddr ); } OMacAddress ODHCPPacket::clientMacAddress() const { return OMacAddress( _dhcphdr->chaddr ); } /*====================================================================================== * OTCPPacket *======================================================================================*/ OTCPPacket::OTCPPacket( const unsigned char* end, const struct tcphdr* data, QObject* parent ) :QObject( parent, "TCP" ), _tcphdr( data ) { odebug << "OTCPPacket::OTCPPacket(): decoding TCP header..." << oendl; } OTCPPacket::~OTCPPacket() { } int OTCPPacket::fromPort() const { return EXTRACT_16BITS( &_tcphdr->source ); } int OTCPPacket::toPort() const { return EXTRACT_16BITS( &_tcphdr->dest ); } int OTCPPacket::seq() const { return EXTRACT_16BITS( &_tcphdr->seq ); } @@ -807,538 +812,536 @@ bool OWaveLanManagementPacket::canCFP() const 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 ) { odebug << "OWaveLanManagementSSID()" << oendl; } OWaveLanManagementSSID::~OWaveLanManagementSSID() { } QString OWaveLanManagementSSID::ID( bool decloak ) const { int length = _data->length; if ( length > 32 ) length = 32; char essid[length+1]; memcpy( &essid, &_data->ssid, length ); essid[length] = 0x0; if ( !decloak || length < 2 || essid[0] != '\0' ) return essid; odebug << "OWaveLanManagementSSID:ID(): SSID is cloaked - decloaking..." << oendl; QString decloakedID; for ( int i = 1; i < length; ++i ) { if ( essid[i] >= 32 && essid[i] <= 126 ) decloakedID.append( essid[i] ); else decloakedID.append( '.' ); } return decloakedID; } /*====================================================================================== * OWaveLanManagementRates *======================================================================================*/ OWaveLanManagementRates::OWaveLanManagementRates( const unsigned char* end, const struct rates_t* data, QObject* parent ) :QObject( parent, "802.11 Rates" ), _data( data ) { odebug << "OWaveLanManagementRates()" << oendl; } OWaveLanManagementRates::~OWaveLanManagementRates() { } /*====================================================================================== * OWaveLanManagementCF *======================================================================================*/ OWaveLanManagementCF::OWaveLanManagementCF( const unsigned char* end, const struct cf_t* data, QObject* parent ) :QObject( parent, "802.11 CF" ), _data( data ) { odebug << "OWaveLanManagementCF()" << oendl; } OWaveLanManagementCF::~OWaveLanManagementCF() { } /*====================================================================================== * OWaveLanManagementFH *======================================================================================*/ OWaveLanManagementFH::OWaveLanManagementFH( const unsigned char* end, const struct fh_t* data, QObject* parent ) :QObject( parent, "802.11 FH" ), _data( data ) { odebug << "OWaveLanManagementFH()" << oendl; } OWaveLanManagementFH::~OWaveLanManagementFH() { } /*====================================================================================== * OWaveLanManagementDS *======================================================================================*/ OWaveLanManagementDS::OWaveLanManagementDS( const unsigned char* end, const struct ds_t* data, QObject* parent ) :QObject( parent, "802.11 DS" ), _data( data ) { odebug << "OWaveLanManagementDS()" << oendl; } 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 ) { odebug << "OWaveLanManagementTim()" << oendl; } OWaveLanManagementTim::~OWaveLanManagementTim() { } /*====================================================================================== * OWaveLanManagementIBSS *======================================================================================*/ OWaveLanManagementIBSS::OWaveLanManagementIBSS( const unsigned char* end, const struct ibss_t* data, QObject* parent ) :QObject( parent, "802.11 IBSS" ), _data( data ) { odebug << "OWaveLanManagementIBSS()" << oendl; } OWaveLanManagementIBSS::~OWaveLanManagementIBSS() { } /*====================================================================================== * OWaveLanManagementChallenge *======================================================================================*/ OWaveLanManagementChallenge::OWaveLanManagementChallenge( const unsigned char* end, const struct challenge_t* data, QObject* parent ) :QObject( parent, "802.11 Challenge" ), _data( data ) { odebug << "OWaveLanManagementChallenge()" << oendl; } 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 ) { odebug << "OWaveLanDataPacket::OWaveLanDataPacket(): decoding frame..." << oendl; 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 ) { odebug << "OLLCPacket::OLLCPacket(): decoding frame..." << oendl; if ( !(_header->oui[0] || _header->oui[1] || _header->oui[2]) ) { owarn << "OLLCPacket::OLLCPacket(): contains an encapsulated Ethernet frame (type = " << EXTRACT_16BITS( &_header->type ) << ")" << oendl; 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: owarn << "OLLCPacket::OLLCPacket(): Unknown Encapsulation type = " << EXTRACT_16BITS( &_header->type ) << oendl; } } } OLLCPacket::~OLLCPacket() { } /*====================================================================================== * OWaveLanControlPacket *======================================================================================*/ OWaveLanControlPacket::OWaveLanControlPacket( const unsigned char* end, const struct ieee_802_11_control_header* data, OWaveLanPacket* parent ) :QObject( parent, "802.11 Control" ), _header( data ) { odebug << "OWaveLanControlPacket::OWaveLanDataControl(): decoding frame..." << oendl; odebug << "Detected subtype is " << controlType() << oendl; } OWaveLanControlPacket::~OWaveLanControlPacket() { } QString OWaveLanControlPacket::controlType() const { switch ( FC_SUBTYPE( EXTRACT_LE_16BITS( &_header->fc ) ) ) { case CTRL_PS_POLL: return "PowerSavePoll"; break; case CTRL_RTS: return "RequestToSend"; break; case CTRL_CTS: return "ClearToSend"; break; case CTRL_ACK: return "Acknowledge"; break; case CTRL_CF_END: return "ContentionFreeEnd"; break; case CTRL_END_ACK: return "AcknowledgeEnd"; break; default: owarn << "OWaveLanControlPacket::managementType(): unhandled subtype " << FC_SUBTYPE( EXTRACT_LE_16BITS( &_header->fc ) ) << oendl; return "Unknown"; } } /*====================================================================================== * 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 ) { odebug << "OPacketCapturer::~OPacketCapturer(): pcap still open, autoclosing." << oendl; close(); } } void OPacketCapturer::setBlocking( bool b ) { if ( pcap_setnonblock( _pch, 1-b, _errbuf ) != -1 ) { odebug << "OPacketCapturer::setBlocking(): blocking mode changed successfully." << oendl; } else { odebug << "OPacketCapturer::setBlocking(): can't change blocking mode: " << _errbuf << oendl; } } bool OPacketCapturer::blocking() const { int b = pcap_getnonblock( _pch, _errbuf ); if ( b == -1 ) { odebug << "OPacketCapturer::blocking(): can't get blocking mode: " << _errbuf << oendl; return -1; } return !b; } void OPacketCapturer::closeDumpFile() { if ( _pcd ) { pcap_dump_close( _pcd ); _pcd = 0; } pcap_close( _pch ); } void OPacketCapturer::close() { if ( _open ) { if ( _sn ) { _sn->disconnect( SIGNAL( activated(int) ), this, SLOT( readyToReceive() ) ); delete _sn; } closeDumpFile(); _open = false; } odebug << "OPacketCapturer::close() --- dumping capturing statistics..." << oendl; odebug << "--------------------------------------------------" << oendl; for( QMap<QString,int>::Iterator it = _stats.begin(); it != _stats.end(); ++it ) odebug << it.key() << " = " << it.data() << oendl; odebug << "--------------------------------------------------" << oendl; } int OPacketCapturer::dataLink() const { return pcap_datalink( _pch ); } void OPacketCapturer::dump( OPacket* p ) { if ( !_pcd ) { owarn << "OPacketCapturer::dump() - cannot dump without open capture file!" << oendl; return; } pcap_dump( (u_char*) _pcd, &p->_hdr, p->_data ); } int OPacketCapturer::fileno() const { if ( _open ) { return pcap_fileno( _pch ); } else { return -1; } } OPacket* OPacketCapturer::next( int time ) { fd_set fds; struct timeval tv; FD_ZERO( &fds ); FD_SET( pcap_fileno( _pch ), &fds ); tv.tv_sec = time / 1000; tv.tv_usec = time % 1000; int retval = select( pcap_fileno( _pch )+1, &fds, NULL, NULL, &tv); if ( retval > 0 ) // clear to read! return next(); else return 0; } OPacket* OPacketCapturer::next() { packetheaderstruct header; odebug << "==> OPacketCapturer::next()" << oendl; const unsigned char* pdata = pcap_next( _pch, &header ); odebug << "<== OPacketCapturer::next()" << oendl; 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() ) ); - #ifndef NODEBUG - p->dumpStructure( const_cast<QObjectList*>( p->children() ) ); - #endif + odebug << "OPacket::dumpStructure: " << p->dumpStructure() << oendl; return p; } else { owarn << "OPacketCapturer::next() - no packet received!" << oendl; return 0; } } bool OPacketCapturer::open( const QString& name ) { 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 ) { owarn << "OPacketCapturer::open(): can't open libpcap with '" << name << "': " << _errbuf << oendl; return false; } odebug << "OPacketCapturer::open(): libpcap [" << name << "] opened successfully." << oendl; _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() ) ); } return true; } bool OPacketCapturer::openDumpFile( const QString& filename ) { pcap_dumper_t* dump = pcap_dump_open( _pch, const_cast<char*>( (const char*) filename ) ); if ( !dump ) { owarn << "OPacketCapturer::open(): can't open dump with '" << filename << "': " << _errbuf << oendl; return false; } odebug << "OPacketCapturer::open(): dump [" << filename << "] opened successfully." << oendl; _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 ) { odebug << "OPacketCapturer::open(): libpcap opened successfully." << oendl; _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 { odebug << "OPacketCapturer::open(): can't open libpcap with '" << name << "': " << _errbuf << oendl; return false; } } bool OPacketCapturer::isOpen() const { return _open; } void OPacketCapturer::readyToReceive() { odebug << "OPacketCapturer::readyToReceive(): about to emit 'receivePacket(p)'" << oendl; 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; } int OPacketCapturer::snapShot() const { return pcap_snapshot( _pch ); } bool OPacketCapturer::swapped() const { return pcap_is_swapped( _pch ); } QString OPacketCapturer::version() const { - return QString().sprintf( "%s.%s", pcap_major_version( _pch ), pcap_minor_version( _pch ) ); + return QString().sprintf( "%d.%d", pcap_major_version( _pch ), pcap_minor_version( _pch ) ); } diff --git a/libopie2/opienet/opcap.h b/libopie2/opienet/opcap.h index f5dc5c0..b873b49 100644 --- a/libopie2/opienet/opcap.h +++ b/libopie2/opienet/opcap.h @@ -1,526 +1,531 @@ /* This file is part of the Opie Project Copyright (C) 2003 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. */ #ifndef OPCAP_H #define OPCAP_H -/* 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> +/* OPIE */ +#include <opie2/onetutils.h> /* QT */ #include <qevent.h> #include <qfile.h> #include <qhostaddress.h> #include <qobject.h> #include <qstring.h> +#include <qtextstream.h> #include <qmap.h> -/* OPIE */ -#include <opie2/onetutils.h> +/* STD */ +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> -/* Custom Network Includes */ +/* Custom Network Includes (must go here, don't reorder!) */ #include "802_11_user.h" #include "dhcp.h" + /* TYPEDEFS */ typedef struct timeval timevalstruct; typedef struct pcap_pkthdr packetheaderstruct; /* FORWARDS */ class OPacketCapturer; class QSocketNotifier; /*====================================================================================== * OPacket - A frame on the wire *======================================================================================*/ /** @brief A class representing a data frame on the wire. * * The whole family of the packet classes are used when capturing frames from a network. * Most standard network protocols in use share a common architecture, which mostly is * a packet header and then the packet payload. In layered architectures, each lower layer * encapsulates data from its upper layer - that is it * treats the data from its upper layer as payload and prepends an own header to the packet, * which - again - is treated as the payload for the layer below. The figure below is an * example for how such a data frame is composed out of packets, e.g. when sending a mail. * * <pre> * | User Data | == Mail Data * | SMTP Header | User Data | == SMTP * | TCP Header | SMTP Header | User Data | == TCP * | IP Header | TCP Header | SMTP Header | User Data | == IP * | MAC Header | IP Header | TCP Header | SMTP Header | User Data | == MAC * * </pre> * * The example is trimmed for simplicity, because the MAC (Medium Access Control) layer * also contains a few more levels of encapsulation. * Since the type of the payload is more or less independent from the encapsulating protocol, * the header must be inspected before attempting to decode the payload. Hence, the * encapsulation level varies and can't be deduced without actually looking into the packets. * * For actually working with captured frames, it's useful to identify the packets via names and * insert them into a parent/child - relationship based on the encapsulation. This is why * all packet classes derive from QObject. The amount of overhead caused by the QObject is * not a problem in this case, because we're talking about a theoratical maximum of about * 10 packets per captured frame. We need to stuff them into a searchable list anyway and the * QObject also cares about destroying the sub-, (child-) packets. * * This enables us to perform a simple look for packets of a certain type: * @code * OPacketCapturer* pcap = new OPacketCapturer(); * pcap->open( "eth0" ); * OPacket* p = pcap->next(); * OIPPacket* ip = (OIPPacket*) p->child( "IP" ); // returns 0, if no such child exists * odebug << "got ip packet from " << ip->fromIPAddress().toString() << " to " << ip->toIPAddress().toString() << oendl; * */ class OPacket : public QObject { Q_OBJECT friend class OPacketCapturer; + friend QTextStream& operator<<( QTextStream& s, const OPacket& p ); 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: - void dumpStructure( QObjectList* ); - QString _dumpStructure( QObjectList* ); + QString dumpStructure() const; + QString _dumpStructure( QObjectList* ) const; private: const packetheaderstruct _hdr; // pcap packet header const unsigned char* _data; // pcap packet data const unsigned char* _end; // end of pcap packet data }; +QTextStream& operator<<( QTextStream& s, const OPacket& p ); + /*====================================================================================== * OEthernetPacket - DLT_EN10MB frame *======================================================================================*/ class OEthernetPacket : public QObject { Q_OBJECT public: OEthernetPacket( const unsigned char*, const struct ether_header*, QObject* parent = 0 ); virtual ~OEthernetPacket(); OMacAddress sourceAddress() const; OMacAddress destinationAddress() const; int type() const; private: const struct ether_header* _ether; }; /*====================================================================================== * OPrismHeaderPacket - DLT_PRISM_HEADER frame *======================================================================================*/ class OPrismHeaderPacket : public QObject { Q_OBJECT public: OPrismHeaderPacket( const unsigned char*, const struct prism_hdr*, QObject* parent = 0 ); virtual ~OPrismHeaderPacket(); unsigned int signalStrength() const; private: const struct prism_hdr* _header; }; /*====================================================================================== * OWaveLanPacket - DLT_IEEE802_11 frame *======================================================================================*/ class OWaveLanPacket : public QObject { Q_OBJECT public: OWaveLanPacket( const unsigned char*, const struct ieee_802_11_header*, QObject* parent = 0 ); virtual ~OWaveLanPacket(); int duration() const; bool fromDS() const; bool toDS() const; virtual OMacAddress macAddress1() const; virtual OMacAddress macAddress2() const; virtual OMacAddress macAddress3() const; virtual OMacAddress macAddress4() const; bool usesPowerManagement() const; int type() const; int subType() const; int version() const; bool usesWep() const; private: const struct ieee_802_11_header* _wlanhdr; }; /*====================================================================================== * OWaveLanManagementPacket - type: management (T_MGMT) *======================================================================================*/ class OWaveLanManagementPacket : public QObject { Q_OBJECT public: OWaveLanManagementPacket( const unsigned char*, const struct ieee_802_11_mgmt_header*, OWaveLanPacket* parent = 0 ); virtual ~OWaveLanManagementPacket(); QString managementType() const; int beaconInterval() const; int capabilities() const; // generic bool canESS() const; bool canIBSS() const; bool canCFP() const; bool canCFP_REQ() const; bool canPrivacy() const; private: const struct ieee_802_11_mgmt_header* _header; const struct ieee_802_11_mgmt_body* _body; }; /*====================================================================================== * OWaveLanManagementSSID *======================================================================================*/ class OWaveLanManagementSSID : public QObject { Q_OBJECT public: OWaveLanManagementSSID( const unsigned char*, const struct ssid_t*, QObject* parent = 0 ); virtual ~OWaveLanManagementSSID(); QString ID( bool decloak = false ) const; private: const struct ssid_t* _data; }; /*====================================================================================== * OWaveLanManagementRates *======================================================================================*/ class OWaveLanManagementRates : public QObject { Q_OBJECT public: OWaveLanManagementRates( const unsigned char*, const struct rates_t*, QObject* parent = 0 ); virtual ~OWaveLanManagementRates(); private: const struct rates_t* _data; }; /*====================================================================================== * OWaveLanManagementCF *======================================================================================*/ class OWaveLanManagementCF : public QObject { Q_OBJECT public: OWaveLanManagementCF( const unsigned char*, const struct cf_t*, QObject* parent = 0 ); virtual ~OWaveLanManagementCF(); private: const struct cf_t* _data; }; /*====================================================================================== * OWaveLanManagementFH *======================================================================================*/ class OWaveLanManagementFH : public QObject { Q_OBJECT public: OWaveLanManagementFH( const unsigned char*, const struct fh_t*, QObject* parent = 0 ); virtual ~OWaveLanManagementFH(); private: const struct fh_t* _data; }; /*====================================================================================== * OWaveLanManagementDS *======================================================================================*/ class OWaveLanManagementDS : public QObject { Q_OBJECT public: OWaveLanManagementDS( const unsigned char*, const struct ds_t*, QObject* parent = 0 ); virtual ~OWaveLanManagementDS(); int channel() const; private: const struct ds_t* _data; }; /*====================================================================================== * OWaveLanManagementTim *======================================================================================*/ class OWaveLanManagementTim : public QObject { Q_OBJECT public: OWaveLanManagementTim( const unsigned char*, const struct tim_t*, QObject* parent = 0 ); virtual ~OWaveLanManagementTim(); private: const struct tim_t* _data; }; /*====================================================================================== * OWaveLanManagementIBSS *======================================================================================*/ class OWaveLanManagementIBSS : public QObject { Q_OBJECT public: OWaveLanManagementIBSS( const unsigned char*, const struct ibss_t*, QObject* parent = 0 ); virtual ~OWaveLanManagementIBSS(); private: const struct ibss_t* _data; }; /*====================================================================================== * OWaveLanManagementChallenge *======================================================================================*/ class OWaveLanManagementChallenge : public QObject { Q_OBJECT public: OWaveLanManagementChallenge( const unsigned char*, const struct challenge_t*, QObject* parent = 0 ); virtual ~OWaveLanManagementChallenge(); private: const struct challenge_t* _data; }; /*====================================================================================== * OWaveLanDataPacket - type: data (T_DATA) *======================================================================================*/ class OWaveLanDataPacket : public QObject { Q_OBJECT public: OWaveLanDataPacket( const unsigned char*, const struct ieee_802_11_data_header*, OWaveLanPacket* parent = 0 ); virtual ~OWaveLanDataPacket(); private: const struct ieee_802_11_data_header* _header; }; /*====================================================================================== * OWaveLanControlPacket - type: control (T_CTRL) *======================================================================================*/ class OWaveLanControlPacket : public QObject { Q_OBJECT public: OWaveLanControlPacket( const unsigned char*, const struct ieee_802_11_control_header*, OWaveLanPacket* parent = 0 ); virtual ~OWaveLanControlPacket(); QString controlType() const; private: const struct ieee_802_11_control_header* _header; }; /*====================================================================================== * OLLCPacket - IEEE 802.2 Link Level Control *======================================================================================*/ class OLLCPacket : public QObject { Q_OBJECT public: OLLCPacket( const unsigned char*, const struct ieee_802_11_802_2_header* data, QObject* parent = 0 ); virtual ~OLLCPacket(); private: const struct ieee_802_11_802_2_header* _header; }; /*====================================================================================== * OIPPacket *======================================================================================*/ class OIPPacket : public QObject { Q_OBJECT public: OIPPacket( const unsigned char*, const struct iphdr*, QObject* parent = 0 ); virtual ~OIPPacket(); QHostAddress fromIPAddress() const; QHostAddress toIPAddress() const; int tos() const; int len() const; int id() const; int offset() const; int ttl() const; int protocol() const; int checksum() const; private: const struct iphdr* _iphdr; }; /*====================================================================================== * OARPPacket *======================================================================================*/ class OARPPacket : public QObject { Q_OBJECT public: OARPPacket( const unsigned char*, const struct myarphdr*, QObject* parent = 0 ); virtual ~OARPPacket(); QHostAddress senderIPV4Address() const; OMacAddress senderMacAddress() const; QHostAddress targetIPV4Address() const; OMacAddress targetMacAddress() const; //int type() const; QString type() const; private: const struct myarphdr* _arphdr; }; /*====================================================================================== * OUDPPacket *======================================================================================*/ class OUDPPacket : public QObject { Q_OBJECT public: OUDPPacket( const unsigned char*, const struct udphdr*, QObject* parent = 0 ); virtual ~OUDPPacket(); int fromPort() const; int toPort() const; int length() const; int checksum() const; private: const struct udphdr* _udphdr; }; /*====================================================================================== * ODHCPPacket *======================================================================================*/ class ODHCPPacket : public QObject { Q_OBJECT public: ODHCPPacket( const unsigned char*, const struct dhcp_packet*, QObject* parent = 0 ); virtual ~ODHCPPacket(); QHostAddress clientAddress() const; QHostAddress yourAddress() const; QHostAddress serverAddress() const; QHostAddress relayAddress() const; OMacAddress clientMacAddress() const; bool isRequest() const; bool isReply() const; QString type() const; private: const struct dhcp_packet* _dhcphdr; unsigned char _type; }; /*====================================================================================== * OTCPPacket *======================================================================================*/ class OTCPPacket : public QObject |