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/*
Copyright (C) 2001-2025 Free Software Foundation, Inc.
This file is part of GNU Inetutils.
GNU Inetutils is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
GNU Inetutils is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see `http://www.gnu.org/licenses/'. */
#include <config.h>
#include <stddef.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
/*#include <netinet/ip_icmp.h> -- deliberately not including this */
#include <arpa/inet.h>
#include <icmp.h>
int
icmp_timestamp_encode (unsigned char *buffer, size_t bufsize, int ident,
int seqno)
{
icmphdr_t *icmp;
struct timeval tv;
unsigned long v;
if (bufsize < ICMP_TSLEN)
return -1;
gettimeofday (&tv, NULL);
v = htonl ((tv.tv_sec % 86400) * 1000 + tv.tv_usec / 1000);
icmp = (icmphdr_t *) buffer;
icmp->icmp_otime = v;
icmp->icmp_rtime = v;
icmp->icmp_ttime = v;
icmp_generic_encode (buffer, bufsize, ICMP_TIMESTAMP, ident, seqno);
return 0;
}
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