mirror of
https://github.com/angryip/ipscan.git
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updated to vserv-tcpip version 0.9.0
git-svn-id: https://ipscan.svn.sourceforge.net/svnroot/ipscan/ipscan@53 375186e5-ef17-0410-b0b6-91563547dcda
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angryziber
parent
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57
ext/vserv-tcpip/README
Executable file
57
ext/vserv-tcpip/README
Executable file
@ -0,0 +1,57 @@
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$Id: README 6024 2005-12-10 23:04:56Z dfs $
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ABOUT
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-----
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Virtual Services TCP/IP, or VServ TCP/IP for short, is a Java library that
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enables you to easily manipulate IP and TCP packets. It is intended for
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use in conjunction with a library which generates packets, such as
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VServ IPQ, as byte arrays. At the moment it supports only IPv4 packet
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manipulation.
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The API is still in flux; some methods are missing and some existing
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methods will likely be renamed. If you would like something added,
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please submit a patch in unified diff format.
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REQUIREMENTS
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------------
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VServ TCP/IP requires J2SE 1.4 or greater to compile and run.
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COMPILING
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---------
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The source code requires Apache Ant (http://ant.apache.org/) to compile.
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ant -projecthelp
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will list all build targets in build.xml. There are very few files
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in the source tree:
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src/java Java source code
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When you compile the source with
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ant jar
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the following jar file will be created and placed in the lib/ directory:
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vserv-tcpip-version.jar
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LICENSING
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---------
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VServ TCP/IP is Copyright 2004-2005 by Daniel F. Savarese and licensed
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under the Apache License 2.0 as described in the files:
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LICENSE
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NOTICE
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CONTACT
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-------
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To contact me see http://www.savarese.org/contact.html
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@ -1,5 +1,5 @@
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/*
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* $Id: ICMPEchoPacket.java,v 1.1 2005/09/13 20:15:53 angryziber Exp $
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* $Id: ICMPEchoPacket.java 5260 2005-05-10 21:01:16Z dfs $
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*
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* Copyright 2004-2005 Daniel F. Savarese
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* Contact Information: http://www.savarese.org/contact.html
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@ -1,5 +1,5 @@
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/*
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* $Id: ICMPPacket.java,v 1.1 2005/09/13 20:15:53 angryziber Exp $
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* $Id: ICMPPacket.java 5347 2005-05-25 22:45:54Z dfs $
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*
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* Copyright 2004-2005 Daniel F. Savarese
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* Contact Information: http://www.savarese.org/contact.html
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@ -206,37 +206,8 @@ public abstract class ICMPPacket extends IPPacket {
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* @return The computed ICMP checksum.
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*/
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public final int computeICMPChecksum(boolean update) {
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int total = 0;
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int len = getIPPacketLength();
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int i = _offset;
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int imax = _offset + OFFSET_ICMP_CHECKSUM;
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while(i < imax)
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total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
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// Skip existing checksum.
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i = _offset + OFFSET_ICMP_CHECKSUM + 2;
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imax = len - (len % 2);
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while(i < imax)
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total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
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if(i < len)
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total+=((_data_[i] & 0xff) << 8);
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// Fold to 16 bits
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while((total & 0xffff0000) != 0)
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total = (total & 0xffff) + (total >>> 16);
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total = (~total & 0xffff);
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if(update) {
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_data_[_offset + OFFSET_ICMP_CHECKSUM] = (byte)(total >> 8);
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_data_[_offset + OFFSET_ICMP_CHECKSUM + 1] = (byte)(total & 0xff);
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}
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return total;
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return _computeChecksum_(_offset, _offset + OFFSET_ICMP_CHECKSUM,
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getIPPacketLength(), 0, update);
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}
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@ -1,5 +1,5 @@
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/*
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* $Id: IPPacket.java,v 1.1 2005/09/13 20:15:53 angryziber Exp $
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* $Id: IPPacket.java 6025 2005-12-10 23:21:25Z dfs $
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*
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* Copyright 2004-2005 Daniel F. Savarese
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* Contact Information: http://www.savarese.org/contact.html
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@ -34,9 +34,18 @@ import java.net.*;
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public class IPPacket {
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/** Offset into byte array of the type of service header value. */
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public static final int OFFSET_TYPE_OF_SERVICE = 1;
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/** Offset into byte array of total packet length header value. */
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public static final int OFFSET_TOTAL_LENGTH = 2;
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/** Offset into byte array of the identification header value. */
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public static final int OFFSET_IDENTIFICATION = 4;
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/** Offset into byte array of the flags header value. */
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public static final int OFFSET_FLAGS = 6;
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/** Offset into byte array of source address header value. */
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public static final int OFFSET_SOURCE_ADDRESS = 12;
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@ -132,6 +141,79 @@ public class IPPacket {
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}
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/**
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* Sets the IP version header value.
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*
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* @param version A 4-bit unsigned integer.
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*/
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public final void setIPVersion(int version) {
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_data_[0] &= 0x0f;
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_data_[0] |= ((version << 4) & 0xf0);
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}
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/**
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* Returns the IP version header value.
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*
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* @return The IP version header value.
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*/
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public final int getIPVersion() {
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return ((_data_[0] & 0xf0) >> 4);
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}
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/**
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* Sets the IP header length field. At most, this can be a
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* four-bit value. The high order bits beyond the fourth bit
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* will be ignored.
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*
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* @param length The length of the IP header in 32-bit words.
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*/
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public void setIPHeaderLength(int length) {
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// Clear low order bits and then set
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_data_[0] &= 0xf0;
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_data_[0] |= (length & 0x0f);
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}
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/**
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* @return The length of the IP header in 32-bit words.
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*/
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public final int getIPHeaderLength() {
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return (_data_[0] & 0x0f);
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}
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/**
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* @return The length of the IP header in bytes.
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*/
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public final int getIPHeaderByteLength() {
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return getIPHeaderLength() << 2;
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}
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/**
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* Sets the IP type of service header value. You have to set the individual
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* service bits yourself. Convenience methods for setting the service
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* bit fields directly may be added in a future version.
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*
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* @param service An 8-bit unsigned integer.
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*/
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public final void setTypeOfService(int service) {
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_data_[OFFSET_TYPE_OF_SERVICE] = (byte)(service & 0xff);
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}
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/**
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* Returns the IP type of service header value.
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*
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* @return The IP type of service header value.
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*/
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public final int getTypeOfService() {
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return (_data_[OFFSET_TYPE_OF_SERVICE] & 0xff);
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}
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/**
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* Sets the IP packet total length header value.
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*
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@ -153,32 +235,71 @@ public class IPPacket {
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/**
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* Sets the IP header length field. At most, this can be a
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* four-bit value. The high order bits beyond the fourth bit
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* will be ignored.
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* Sets the IP identification header value.
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*
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* @param length The length of the IP header in 32-bit words.
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* @param id A 16-bit unsigned integer.
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*/
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public void setIPHeaderLength(int length) {
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// Clear low order bits and then set
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_data_[0] &= 0xf0;
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_data_[0] |= (length & 0xf);
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public void setIdentification(int id) {
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_data_[OFFSET_IDENTIFICATION] = (byte)((id >> 8) & 0xff);
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_data_[OFFSET_IDENTIFICATION + 1] = (byte)(id & 0xff);
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}
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/**
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* @return The length of the IP header in 32-bit words.
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* Returns the IP identification header value.
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*
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* @return The IP identification header value.
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*/
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public final int getIPHeaderLength() {
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return (_data_[0] & 0xf);
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public final int getIdentification() {
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return (((_data_[OFFSET_IDENTIFICATION] & 0xff) << 8) |
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(_data_[OFFSET_IDENTIFICATION + 1] & 0xff));
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}
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/**
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* @return The length of the IP header in bytes.
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* Sets the IP flags header value. You have to set the individual
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* flag bits yourself. Convenience methods for setting the flag
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* bit fields directly may be added in a future version.
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*
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* @param flags A 3-bit unsigned integer.
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*/
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public final int getIPHeaderByteLength() {
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return getIPHeaderLength() << 2;
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public final void setIPFlags(int flags) {
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_data_[OFFSET_FLAGS] &= 0x1f;
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_data_[OFFSET_FLAGS] |= ((flags << 5) & 0xe0);
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}
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/**
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* Returns the IP flags header value.
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*
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* @return The IP flags header value.
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*/
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public final int getIPFlags() {
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return ((_data_[OFFSET_FLAGS] & 0xe0) >> 5);
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}
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/**
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* Sets the fragment offset header value. The offset specifies a
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* number of octets (i.e., bytes).
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*
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* @param offset A 13-bit unsigned integer.
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*/
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public void setFragmentOffset(int offset) {
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_data_[OFFSET_FLAGS] &= 0xe0;
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_data_[OFFSET_FLAGS] |= ((offset >> 8) & 0x1f);
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_data_[OFFSET_FLAGS + 1] = (byte)(offset & 0xff);
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}
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/**
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* Returns the fragment offset header value.
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*
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* @return The fragment offset header value.
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*/
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public final int getFragmentOffset() {
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return (((_data_[OFFSET_FLAGS] & 0x1f) << 8) |
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(_data_[OFFSET_FLAGS + 1] & 0xff));
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}
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@ -200,6 +321,16 @@ public class IPPacket {
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}
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/**
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* Sets the time to live value in seconds.
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*
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* @param ttl The time to live value in seconds.
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*/
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public final void setTTL(int ttl) {
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_data_[OFFSET_TTL] = (byte)ttl;
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}
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/**
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* @return The time to live value in seconds.
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*/
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@ -208,6 +339,52 @@ public class IPPacket {
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}
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/**
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* Calculates checksums assuming the checksum is a 16-bit header field.
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* This method is generalized to work for IP, ICMP, UDP, and TCP packets
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* given the proper parameters.
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*/
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protected int _computeChecksum_(int startOffset,
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int checksumOffset,
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int length,
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int virtualHeaderTotal,
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boolean update)
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{
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int total = 0;
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int i = startOffset;
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int imax = checksumOffset;
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while(i < imax)
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total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
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// Skip existing checksum.
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i = checksumOffset + 2;
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imax = length - (length % 2);
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while(i < imax)
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total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
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if(i < length)
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total+=((_data_[i] & 0xff) << 8);
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total+=virtualHeaderTotal;
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// Fold to 16 bits
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while((total & 0xffff0000) != 0)
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total = (total & 0xffff) + (total >>> 16);
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total = (~total & 0xffff);
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if(update) {
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_data_[checksumOffset] = (byte)(total >> 8);
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_data_[checksumOffset + 1] = (byte)(total & 0xff);
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}
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return total;
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}
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/**
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* Computes the IP checksum, optionally updating the IP checksum header.
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*
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@ -218,31 +395,8 @@ public class IPPacket {
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* @return The computed IP checksum.
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*/
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public final int computeIPChecksum(boolean update) {
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int i = 0;
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int len = getIPHeaderByteLength();
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int total = 0;
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while(i < OFFSET_IP_CHECKSUM)
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total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
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// Skip existing checksum.
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i = OFFSET_IP_CHECKSUM + 2;
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while(i < len)
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total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
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// Fold to 16 bits
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while((total & 0xffff0000) != 0)
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total = (total & 0xffff) + (total >>> 16);
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total = (~total & 0xffff);
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if(update) {
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_data_[OFFSET_IP_CHECKSUM] = (byte)(total >> 8);
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_data_[OFFSET_IP_CHECKSUM + 1] = (byte)(total & 0xff);
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}
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return total;
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return _computeChecksum_(0, OFFSET_IP_CHECKSUM, getIPHeaderByteLength(),
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0, update);
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}
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@ -1,5 +1,5 @@
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/*
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* $Id: OctetConverter.java,v 1.1 2005/09/13 20:15:53 angryziber Exp $
|
||||
* $Id: OctetConverter.java 5067 2005-03-24 06:10:10Z dfs $
|
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*
|
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* Copyright 2004-2005 Daniel F. Savarese
|
||||
* Contact Information: http://www.savarese.org/contact.html
|
||||
|
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@ -1,5 +1,5 @@
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/*
|
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* $Id: TCPPacket.java,v 1.1 2005/09/13 20:15:53 angryziber Exp $
|
||||
* $Id: TCPPacket.java 6023 2005-12-10 20:42:15Z dfs $
|
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*
|
||||
* Copyright 2004-2005 Daniel F. Savarese
|
||||
* Contact Information: http://www.savarese.org/contact.html
|
||||
@ -337,6 +337,17 @@ public class TCPPacket extends IPPacket {
|
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}
|
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|
||||
|
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/**
|
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* Sets te TCP header length (i.e., the data offset field) in 32-bit words.
|
||||
*
|
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* @param length The TCP header length in 32-bit words.
|
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*/
|
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public final void setTCPHeaderLength(int length) {
|
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_data_[__offset + OFFSET_HEADER_LENGTH] &= 0x0f;
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_data_[__offset + OFFSET_HEADER_LENGTH] |= ((length << 4) & 0xf0);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @return The TCP header length in 32-bit words.
|
||||
*/
|
||||
@ -353,6 +364,17 @@ public class TCPPacket extends IPPacket {
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Sets the TCP window size.
|
||||
*
|
||||
* @param window The TCP window size.
|
||||
*/
|
||||
public final void setWindowSize(int window) {
|
||||
_data_[__offset + OFFSET_WINDOW_SIZE] = (byte)((window >> 8) & 0xff);
|
||||
_data_[__offset + OFFSET_WINDOW_SIZE + 1] = (byte)(window & 0xff);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @return The TCP window size.
|
||||
*/
|
||||
@ -362,6 +384,26 @@ public class TCPPacket extends IPPacket {
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Sets the urgent pointer.
|
||||
*
|
||||
* @param pointer The urgent pointer value.
|
||||
*/
|
||||
public final void setUrgentPointer(int pointer) {
|
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_data_[__offset + OFFSET_URG_POINTER] = (byte)((pointer >> 8) & 0xff);
|
||||
_data_[__offset + OFFSET_URG_POINTER + 1] = (byte)(pointer & 0xff);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @return The urgent pointer value.
|
||||
*/
|
||||
public final int getUrgentPointer() {
|
||||
return (((_data_[__offset + OFFSET_URG_POINTER] & 0xff) << 8) |
|
||||
(_data_[__offset + OFFSET_URG_POINTER + 1] & 0xff));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @return The TCP checksum.
|
||||
*/
|
||||
@ -433,39 +475,9 @@ public class TCPPacket extends IPPacket {
|
||||
* @return The computed TCP checksum.
|
||||
*/
|
||||
public final int computeTCPChecksum(boolean update) {
|
||||
int total = 0;
|
||||
int len = getIPPacketLength();
|
||||
int i = __offset;
|
||||
int imax = __offset + OFFSET_TCP_CHECKSUM;
|
||||
|
||||
while(i < imax)
|
||||
total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
|
||||
|
||||
// Skip existing checksum.
|
||||
i = __offset + OFFSET_URG_POINTER;
|
||||
|
||||
imax = len - (len % 2);
|
||||
|
||||
while(i < imax)
|
||||
total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
|
||||
|
||||
if(i < len)
|
||||
total+=((_data_[i] & 0xff) << 8);
|
||||
|
||||
total+=__getVirtualHeaderTotal();
|
||||
|
||||
// Fold to 16 bits
|
||||
while((total & 0xffff0000) != 0)
|
||||
total = (total & 0xffff) + (total >>> 16);
|
||||
|
||||
total = (~total & 0xffff);
|
||||
|
||||
if(update) {
|
||||
_data_[__offset + OFFSET_TCP_CHECKSUM] = (byte)(total >> 8);
|
||||
_data_[__offset + OFFSET_TCP_CHECKSUM + 1] = (byte)(total & 0xff);
|
||||
}
|
||||
|
||||
return total;
|
||||
return _computeChecksum_(__offset, __offset + OFFSET_TCP_CHECKSUM,
|
||||
getIPPacketLength(), __getVirtualHeaderTotal(),
|
||||
update);
|
||||
}
|
||||
|
||||
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
/*
|
||||
* $Id: UDPPacket.java,v 1.1 2005/09/13 20:15:53 angryziber Exp $
|
||||
* $Id: UDPPacket.java 5347 2005-05-25 22:45:54Z dfs $
|
||||
*
|
||||
* Copyright 2005 Daniel F. Savarese
|
||||
* Contact Information: http://www.savarese.org/contact.html
|
||||
@ -235,39 +235,9 @@ public class UDPPacket extends IPPacket {
|
||||
* @return The computed UDP checksum.
|
||||
*/
|
||||
public final int computeUDPChecksum(boolean update) {
|
||||
int total = 0;
|
||||
int len = getIPPacketLength();
|
||||
int i = __offset;
|
||||
int imax = __offset + OFFSET_UDP_CHECKSUM;
|
||||
|
||||
while(i < imax)
|
||||
total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
|
||||
|
||||
// Skip existing checksum.
|
||||
i = __offset + LENGTH_UDP_HEADER;
|
||||
|
||||
imax = len - (len % 2);
|
||||
|
||||
while(i < imax)
|
||||
total+=(((_data_[i++] & 0xff) << 8) | (_data_[i++] & 0xff));
|
||||
|
||||
if(i < len)
|
||||
total+=((_data_[i] & 0xff) << 8);
|
||||
|
||||
total+=__getVirtualHeaderTotal();
|
||||
|
||||
// Fold to 16 bits
|
||||
while((total & 0xffff0000) != 0)
|
||||
total = (total & 0xffff) + (total >>> 16);
|
||||
|
||||
total = (~total & 0xffff);
|
||||
|
||||
if(update) {
|
||||
_data_[__offset + OFFSET_UDP_CHECKSUM] = (byte)(total >> 8);
|
||||
_data_[__offset + OFFSET_UDP_CHECKSUM + 1] = (byte)(total & 0xff);
|
||||
}
|
||||
|
||||
return total;
|
||||
return _computeChecksum_(__offset, __offset + OFFSET_UDP_CHECKSUM,
|
||||
getIPPacketLength(), __getVirtualHeaderTotal(),
|
||||
update);
|
||||
}
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user