zeek/src/ARP.h
Robin Sommer 1f0b88041a Changing ARP detection to always kick in even if no analyzer is
activated.

Without that, we get "unknown_protocol" weird for ARP, which doesn't
seem right.
2012-02-17 13:24:47 -08:00

56 lines
1.3 KiB
C++

// See the file "COPYING" in the main distribution directory for copyright.
#ifndef arp_h
#define arp_h
#include "config.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>
#include <net/if_arp.h>
#ifdef HAVE_NET_ETHERNET_H
#include <net/ethernet.h>
#elif defined(HAVE_SYS_ETHERNET_H)
#include <sys/ethernet.h>
#elif defined(HAVE_NETINET_IF_ETHER_H)
#include <netinet/if_ether.h>
#elif defined(HAVE_NET_ETHERTYPES_H)
#include <net/ethertypes.h>
#endif
#ifndef arp_pkthdr
#define arp_pkthdr arphdr
#endif
#include "NetVar.h"
class ARP_Analyzer : public BroObj {
public:
ARP_Analyzer();
virtual ~ARP_Analyzer();
void NextPacket(double t, const struct pcap_pkthdr* hdr,
const u_char* const pkt, int hdr_size);
void Describe(ODesc* d) const;
void RREvent(EventHandlerPtr e, const u_char* src, const u_char* dst,
const char* spa, const char* sha,
const char* tpa, const char* tha);
// Whether a packet is of interest for ARP analysis.
static bool IsARP(const u_char* pkt, int hdr_size);
protected:
AddrVal* ConstructAddrVal(const void* addr);
StringVal* EthAddrToStr(const u_char* addr);
void BadARP(const struct arp_pkthdr* hdr, const char* string);
void Corrupted(const char* string);
EventHandlerPtr arp_corrupted_packet;
EventHandlerPtr arp_request;
EventHandlerPtr arp_reply;
};
#endif