/*
* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Sly Technologies, Inc.
*
* This file is part of jNetPcap.
*
* jNetPcap is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.jnetpcap.bugs;
import junit.framework.TestCase;
import org.jnetpcap.packet.JMemoryPacket;
import org.jnetpcap.packet.format.JFormatter;
import org.jnetpcap.packet.format.TextFormatter;
import org.jnetpcap.protocol.JProtocol;
// TODO: Auto-generated Javadoc
/**
* User reports the following problem:
*
* <pre>
* java.lang.NullPointerException
* at org.jnetpcap.packet.JPacket.getHeader(JPacket.java:660)
* at org.jnetpcap.packet.JPacket.getHeader(JPacket.java:640)
* at java.lang.Thread.run(Thread.java:619)
* PACKET DEBUG
* ------------
* JMemory: JMemory@7f3f300e1294class org.jnetpcap.packet.PcapPacket: size=78 bytes
* JMemory: owner=nio.JMemoryPool$Block.class(size=10240/offset=6468)
* ------------
* PACKET DUMP
* 0000:*00 0a 8a 27 b8 80 00 30 48 32 72 86 08 00*45 00 ...'...0H2r...E.
* 0010: 00 40 d8 d5 40 00 40 06 2f 80 55 5e 40 14 c3 1d .@..@.@./.Uˆ@...
* 0020: d9 d2*00 6e 06 86 c4 53 d9 dd 7c e1 ce 2c 50 18 ...n...S..|..,P.
* 0030: 16 d0 73 4b 00 00*2b 4f 4b 20 50 61 73 73 77 6f ..sK..+OK Passwo
* 0040: 72 64 20 72 65 71 75 69 72 65 64 2e 0d 0a* rd required...
*
* ------------
*
* java.nio.BufferUnderflowException
* at org.jnetpcap.nio.JBuffer.getUShort(Native Method)
* at org.jnetpcap.protocol.network.Ip4.id(Ip4.java:1699)
* at org.jnetpcap.protocol.network.Ip4.decodeHeader(Ip4.java:1530)
* at org.jnetpcap.packet.JHeader.decode(JHeader.java:530)
* at org.jnetpcap.packet.JPacket.getHeaderByIndex(JPacket.java:690)
* at org.jnetpcap.packet.JPacket.hasHeader(JPacket.java:913)
* at org.jnetpcap.packet.JPacket.hasHeader(JPacket.java:887)
* at org.jnetpcap.protocol.tcpip.Tcp.decodeHeader(Tcp.java:185)
* at org.jnetpcap.packet.JHeader.decode(JHeader.java:530)
* at org.jnetpcap.packet.JPacket.getHeaderByIndex(JPacket.java:690)
* at org.jnetpcap.packet.JPacket.hasHeader(JPacket.java:913)
* at org.jnetpcap.packet.JPacket.hasHeader(JPacket.java:887)
*
* also from the stack trace file java generates when application crashes...
*
* Instructions: (pc=0x00007fbfa1ae67fd)
* 0x00007fbfa1ae67ed: 55 48 89 e5 48 83 ec 20 48 89 7d e8 48 8b 45 e8
* 0x00007fbfa1ae67fd: 48 8b 40 38 48 89 c2 48 8b 45 e8 8b 40 4c 48 98
*
* Stack: [0x0000000042085000,0x0000000042186000], sp=0x00000000421842e0, free space=1020k
* Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
* C [libjnetpcap.so.1.3.b0011+0x1b7fd] _Z13scan_ethernetP6scan_t+0x10
* C [libjnetpcap.so.1.3.b0011+0x1d10e] Java_org_jnetpcap_packet_JHeaderScanner_nativeScan+0x4e
* J org.jnetpcap.packet.JHeaderScanner.nativeScan(Lorg/jnetpcap/packet/JScan;)V
*
* Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
* J org.jnetpcap.packet.JHeaderScanner.nativeScan(Lorg/jnetpcap/packet/JScan;)V
* J org.jnetpcap.packet.JHeaderScanner.scanHeader(Lorg/jnetpcap/packet/JScan;)V
* v ˜StubRoutines::call_stub
* J org.jnetpcap.packet.JScanner.scan(Lorg/jnetpcap/packet/JPacket;Lorg/jnetpcap/packet/JPacket$State;II)I
*
* </pre>
*
* @author Mark Bednarczyk
* @author Sly Technologies, Inc.
*/
public class Bug2899902_BufferUnderFlow_in_Tcp_DecodeHeader
extends
TestCase {
/**
* Try and duplicate the bug
*/
public void testBug2899902() {
String packetData =
"00 0a 8a 27 b8 80 00 30 48 32 72 86 08 00 45 00 "
+ "00 40 d8 d5 40 00 40 06 2f 80 55 5e 40 14 c3 1d "
+ "d9 d2 00 6e 06 86 c4 53 d9 dd 7c e1 ce 2c 50 18 "
+ "16 d0 73 4b 00 00 2b 4f 4b 20 50 61 73 73 77 6f "
+ "72 64 20 72 65 71 75 69 72 65 64 2e 0d 0a";
JMemoryPacket p = new JMemoryPacket(JProtocol.ETHERNET_ID, packetData);
TextFormatter.getDefault().setResolveAddresses(true);
System.out.println(p);
}
}