zeek/src/packet_analysis/protocol/null/Null.cc
2020-09-23 11:13:29 -07:00

24 lines
576 B
C++

// See the file "COPYING" in the main distribution directory for copyright.
#include "Null.h"
#include "NetVar.h"
using namespace zeek::packet_analysis::Null;
NullAnalyzer::NullAnalyzer()
: zeek::packet_analysis::Analyzer("Null")
{
}
bool NullAnalyzer::AnalyzePacket(size_t len, const uint8_t* data, Packet* packet)
{
if ( 4 >= len )
{
packet->Weird("null_analyzer_failed");
return false;
}
uint32_t protocol = (data[3] << 24) + (data[2] << 16) + (data[1] << 8) + data[0];
// skip link header
return ForwardPacket(len - 4, data + 4, packet, protocol);
}