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authormickeyl <mickeyl>2004-04-07 09:49:19 (UTC)
committer mickeyl <mickeyl>2004-04-07 09:49:19 (UTC)
commitab892edccddb983b844065e2a13b15ecaecefbbd (patch) (unidiff)
tree1fea3f8f6aee0246295d226168c49ec3193e6622
parent837069ed5f048c99774c88f2ad05a057a0b76ce8 (diff)
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copy data handed over by libpcap because libpcap reuses the data area
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--libopie2/opienet/opcap.cpp39
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
@@ -1,15 +1,15 @@
1/* 1/*
2                 This file is part of the Opie Project 2                 This file is part of the Opie Project
3              Copyright (C) 2003 by Michael 'Mickey' Lauer <mickey@Vanille.de> 3              Copyright (C) 2003-2004 by Michael 'Mickey' Lauer <mickey@Vanille.de>
4 =. 4 =.
5 .=l. 5 .=l.
6           .>+-= 6           .>+-=
7 _;:,     .>    :=|. This program is free software; you can 7 _;:,     .>    :=|. This program is free software; you can
8.> <`_,   >  .   <= redistribute it and/or modify it under 8.> <`_,   >  .   <= redistribute it and/or modify it under
9:`=1 )Y*s>-.--   : the terms of the GNU Library General Public 9:`=1 )Y*s>-.--   : the terms of the GNU Library General Public
10.="- .-=="i,     .._ License as published by the Free Software 10.="- .-=="i,     .._ License as published by the Free Software
11 - .   .-<_>     .<> Foundation; either version 2 of the License, 11 - .   .-<_>     .<> Foundation; either version 2 of the License,
12     ._= =}       : or (at your option) any later version. 12     ._= =}       : or (at your option) any later version.
13    .%`+i>       _;_. 13    .%`+i>       _;_.
14    .i_,=:_.      -<s. This program is distributed in the hope that 14    .i_,=:_.      -<s. This program is distributed in the hope that
15     +  .  -:.       = it will be useful, but WITHOUT ANY WARRANTY; 15     +  .  -:.       = it will be useful, but WITHOUT ANY WARRANTY;
@@ -19,86 +19,89 @@
19..}^=.=       =       ; Library General Public License for more 19..}^=.=       =       ; Library General Public License for more
20++=   -.     .`     .: details. 20++=   -.     .`     .: details.
21 :     =  ...= . :.=- 21 :     =  ...= . :.=-
22 -.   .:....=;==+<; You should have received a copy of the GNU 22 -.   .:....=;==+<; You should have received a copy of the GNU
23  -_. . .   )=.  = Library General Public License along with 23  -_. . .   )=.  = Library General Public License along with
24    --        :-=` this library; see the file COPYING.LIB. 24    --        :-=` this library; see the file COPYING.LIB.
25 If not, write to the Free Software Foundation, 25 If not, write to the Free Software Foundation,
26 Inc., 59 Temple Place - Suite 330, 26 Inc., 59 Temple Place - Suite 330,
27 Boston, MA 02111-1307, USA. 27 Boston, MA 02111-1307, USA.
28 28
29*/ 29*/
30 30
31#include "udp_ports.h"
32#include "opcap.h"
33
31/* OPIE */ 34/* OPIE */
32#include <opie2/opcap.h>
33#include <opie2/odebug.h> 35#include <opie2/odebug.h>
36using namespace Opie::Core;
34 37
35/* QT */ 38/* QT */
36#include <qapplication.h> // don't use oapplication here (will decrease reusability in other projects) 39#include <qapplication.h> // don't use oapplication here (will decrease reusability in other projects)
37#include <qsocketnotifier.h> 40#include <qsocketnotifier.h>
38#include <qobjectlist.h> 41#include <qobjectlist.h>
39 42
40/* SYSTEM */ 43/* STD */
41#include <sys/time.h> 44#include <sys/time.h>
42#include <sys/types.h> 45#include <sys/types.h>
46#include <assert.h>
43#include <unistd.h> 47#include <unistd.h>
44 48#include <string.h>
45/* LOCAL */
46#include "udp_ports.h"
47
48using namespace Opie::Core;
49 49
50namespace Opie { 50namespace Opie {
51namespace Net { 51namespace Net {
52 52
53/*====================================================================================== 53/*======================================================================================
54 * OPacket 54 * OPacket
55 *======================================================================================*/ 55 *======================================================================================*/
56 56
57OPacket::OPacket( int datalink, packetheaderstruct header, const unsigned char* data, QObject* parent ) 57OPacket::OPacket( int datalink, packetheaderstruct header, const unsigned char* data, QObject* parent )
58 :QObject( parent, "Generic" ), _hdr( header ), _data( data ) 58 :QObject( parent, "Generic" ), _hdr( header ), _data( 0 )
59{ 59{
60 //FIXME: Copy the data structure here, because it isn't persistent. Check that.
61
62 qDebug( "OPacket::OPacket(): (Len %d, CapLen %d)" /*, ctime((const time_t*) header.ts.tv_sec)*/, header.len, header.caplen );
63 60
64 _end = (unsigned char*) data + header.len; 61 _data = new unsigned char[sizeof data];
65 //qDebug( "OPacket::data @ %0x, end @ %0x", data, _end ); 62 assert( _data );
63 memcpy( const_cast<unsigned char*>(_data), data, sizeof data );
64 // We have to copy the data structure here, because the 'data' pointer handed by libpcap
65 // points to an internal region which is reused by lipcap.
66 odebug << "OPacket: Length = " << header.len << ", Caplen = " << header.caplen << oendl;
67 _end = (unsigned char*) _data + header.len;
66 68
67 switch ( datalink ) 69 switch ( datalink )
68 { 70 {
69 case DLT_EN10MB: 71 case DLT_EN10MB:
70 odebug << "OPacket::OPacket(): Received Packet. Datalink = ETHERNET" << oendl; 72 odebug << "OPacket::OPacket(): Received Packet. Datalink = ETHERNET" << oendl;
71 new OEthernetPacket( _end, (const struct ether_header*) data, this ); 73 new OEthernetPacket( _end, (const struct ether_header*) _data, this );
72 break; 74 break;
73 75
74 case DLT_IEEE802_11: 76 case DLT_IEEE802_11:
75 odebug << "OPacket::OPacket(): Received Packet. Datalink = IEEE802.11" << oendl; 77 odebug << "OPacket::OPacket(): Received Packet. Datalink = IEEE802.11" << oendl;
76 new OWaveLanPacket( _end, (const struct ieee_802_11_header*) data, this ); 78 new OWaveLanPacket( _end, (const struct ieee_802_11_header*) _data, this );
77 break; 79 break;
78 80
79 case DLT_PRISM_HEADER: 81 case DLT_PRISM_HEADER:
80 odebug << "OPacket::OPacket(): Received Packet. Datalink = PRISM_HEADER" << oendl; 82 odebug << "OPacket::OPacket(): Received Packet. Datalink = PRISM_HEADER" << oendl;
81 new OPrismHeaderPacket( _end, (const struct prism_hdr*) (unsigned char*) data, this ); 83 new OPrismHeaderPacket( _end, (const struct prism_hdr*) (unsigned char*) _data, this );
82 break; 84 break;
83 85
84 default: 86 default:
85 owarn << "OPacket::OPacket(): Received Packet over unsupported datalink, type " << datalink << "!" << oendl; 87 owarn << "OPacket::OPacket(): Received Packet over unsupported datalink, type " << datalink << "!" << oendl;
86 } 88 }
87} 89}
88 90
89 91
90OPacket::~OPacket() 92OPacket::~OPacket()
91{ 93{
92 qDebug( "OPacket::~OPacket( %s )", name() ); 94 odebug << "~OPacket( " << name() << " )" << oendl;
95 delete _data;
93} 96}
94 97
95 98
96timevalstruct OPacket::timeval() const 99timevalstruct OPacket::timeval() const
97{ 100{
98 return _hdr.ts; 101 return _hdr.ts;
99} 102}
100 103
101 104
102int OPacket::caplen() const 105int OPacket::caplen() const
103{ 106{
104 return _hdr.caplen; 107 return _hdr.caplen;