igmp.c

Firestorm NIDS是一个性能非常高的网络入侵检测系统 (NIDS)。目前

#include <stdlib.h>
#include <packet.h>

#include <firestorm.h>
#include <args.h>
#include <plugin.h>
#include <alert.h>
#include <signature.h>
#include <decode.h>
#include <preproc.h>

PLUGIN_STD_DEFS();
proc_dispatch dispatch;

void igmp_decode(struct packet *p);
struct proto igmp_p=init_proto("igmp", igmp_decode, NULL);
struct proto_req igmp_r[]={
	proto_request("ip", 2),
	null_request()
};

/* Internet group messaging protocol */
void igmp_decode(struct packet *p)
{
	struct layer *l=&p->layer[p->llen];

	if ( l->h.raw+sizeof(struct pkt_igmphdr) > p->end ) {
		return;
	}

	p->llen++;
	dispatch(p);
}

int PLUGIN_DECODE (struct decode_api *d)
{
	int ok=0;

	object_check(d);

	dispatch=d->dispatch;

	ok+=d->decode_add(&igmp_p, igmp_r);

	return (ok) ? PLUGIN_ERR_OK : PLUGIN_ERR_FAIL;
}

int PLUGIN_INIT (struct plugin_in *in, struct plugin_out *out)
{
	plugin_check(in, out);

	PLUGIN_ID("decode.igmp", "Internet Group Messaging Protocol");
	PLUGIN_VERSION(2, 0);
	PLUGIN_AUTHOR("Gianni Tedesco", "[e-mail]");
	PLUGIN_LICENSE("GPL");

	return PLUGIN_ERR_OK;
}

int PLUGIN_UNLOAD (int code) {
	return PLUGIN_ERR_OK;
}