76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/* $OpenBSD: logwtmp.c,v 1.14 2021/10/24 21:24:20 deraadt Exp $ */
|
|
/* $NetBSD: logwtmp.c,v 1.4 1995/04/11 02:44:58 cgd Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <fcntl.h>
|
|
#include <utmp.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <netinet/in.h>
|
|
|
|
#include "monitor.h"
|
|
#include "extern.h"
|
|
|
|
static int fd = -1;
|
|
|
|
/*
|
|
* Modified version of logwtmp that holds wtmp file open
|
|
* after first call, for use with ftp (which may chroot
|
|
* after login, but before logout).
|
|
*/
|
|
void
|
|
ftpdlogwtmp(const char *line, const char *name, const char *host)
|
|
{
|
|
struct timeval tv;
|
|
struct stat buf;
|
|
struct utmp ut;
|
|
|
|
if (fd < 0 && (fd = open(_PATH_WTMP, O_WRONLY|O_APPEND)) == -1)
|
|
return;
|
|
if (fstat(fd, &buf) == 0) {
|
|
(void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
|
|
(void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
|
|
(void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
|
|
gettimeofday(&tv, NULL);
|
|
ut.ut_time = tv.tv_sec;
|
|
if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
|
|
sizeof(struct utmp))
|
|
(void)ftruncate(fd, buf.st_size);
|
|
}
|
|
}
|