jehanne/sys/src/cmd/ip/dhcpd/dhcpleases.c

61 lines
1.6 KiB
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
/* Portions of this file are Copyright (C) 2015-2018 Giacomo Tesio <giacomo@tesio.it>
* See /doc/license/gpl-2.0.txt for details about the licensing.
*/
/* Portions of this file are Copyright (C) 9front's team.
* See /doc/license/9front-mit for details about the licensing.
* See http://git.9front.org/plan9front/plan9front/HEAD/info.html for a list of authors.
*/
#include <u.h>
#include <lib9.h>
#include <bio.h>
#include <ndb.h>
#include <ip.h>
#include "dat.h"
extern char *binddir;
int32_t now;
char *blog = "ipboot";
int minlease = MinLease;
void
main(void)
{
Dir *all;
int i, nall, fd;
Binding b;
fmtinstall('E', eipfmt);
fmtinstall('I', eipfmt);
fmtinstall('V', eipfmt);
fmtinstall('M', eipfmt);
fd = sys_open(binddir, OREAD);
if(fd < 0)
sysfatal("opening %s: %r", binddir);
nall = dirreadall(fd, &all);
if(nall < 0)
sysfatal("reading %s: %r", binddir);
sys_close(fd);
b.boundto = 0;
b.lease = b.offer = 0;
now = time(0);
for(i = 0; i < nall; i++){
if(parseip(b.ip, all[i].name) == -1 || syncbinding(&b, 0) < 0)
continue;
if(b.lease > now)
print("%I leased by %s until %s", b.ip, b.boundto,
ctime(b.lease));
}
exits(0);
}