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Datalink Class Reference

the hardware-layer, ethernet for example. More...

#include <usi++.h>

Class diagram for Datalink:

IP ARP UDP TCP ICMP

List of all members.

Public Members

Protected Members


Detailed Description

the hardware-layer, ethernet for example.


Member Function Documentation

Datalink::Datalink (char * filterStr)

This constructor should be used to initialize raw-datalink-objects, means not IP/TCP/ICMP etc.

char * Datalink::get_hwsrc (char * hwaddr, int len)

Fill buffer with src-hardware-adress of actuall packet, use 'datalink' to determine what HW the device is. Now only ethernet s supportet, but it's extensinable.

Examples:
arpw.cc, hardSpy.cc and icmp_sniff.cc.

char * Datalink::get_hwdst (char * hwaddr, int len)

Fill buffer with dst-hardware-adress of actuall packet, use 'datalink' to determine what HW the device is. Now only ethernet s supportet, but it's extensinable.

Examples:
arpw.cc and icmp_sniff.cc.

int Datalink::get_etype ()

Get protocol-type of ethernet-frame Maybe moves to ethernet-class in future?

int Datalink::init_device (char * dev, int promisc, int snaplen) [virtual]

Initialize a device ("eth0" for example) for packet- capturing. It MUST be called before sniffpack() is launched. Set 'promisc' to 1 if you want the device running in promiscous mode. Fetch at most 'snaplen' bytes per call.

Reimplemented in UDP, TCP, IP and ICMP.

int Datalink::setfilter (char * s) [virtual]

set a new filter for capturing


Member Data Documentation

char Datalink::host[MAXHOSTLEN] [protected]

derived classes need access to these


The documentation for this class was generated from the following file:
Generated at Sun Oct 10 13:51:35 1999 for libusi++ by doxygen  written by Dimitri van Heesch, © 1997-1999