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/*
* $smu-mark$
* $name: sendhcmp.c$
* $author: Salvatore Sanfilippo <antirez@invece.org>$
* $copyright: Copyright (C) 1999 by Salvatore Sanfilippo$
* $license: This software is under GPL version 2 of license$
* $date: Fri Nov 5 11:55:49 MET 1999$
* $rev: 4$
*/
/* $Id: sendhcmp.c,v 1.2 2003/09/01 00:22:06 antirez Exp $ */
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include <signal.h> /* SIGALARM macro */
#include "hping2.h"
#include "globals.h"
#define MUST_BE_UNREACHED 0
void send_hcmp(__u8 type, __u32 arg)
{
static struct hcmphdr hcmph; /* static because we export this */
/* to data_handler() */
data_size = signlen + sizeof(struct hcmphdr);
/* build hcmp header */
memset(&hcmph, 0, sizeof(hcmph));
hcmph.type = type;
switch (type)
{
case HCMP_RESTART:
hcmph.typedep.seqnum = htons((__u16) arg);
break;
case HCMP_SOURCE_QUENCH:
case HCMP_SOURCE_STIRUP:
hcmph.typedep.usec = htonl(arg);
break;
default:
assert(MUST_BE_UNREACHED);
}
/* use hcmphdr_p to transmit hcmph to data_handler() */
hcmphdr_p = &hcmph;
kill(getpid(), SIGALRM); /* send hcmp */
return;
}
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