GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: libexec/ftpd/logutmp.c Lines: 0 33 0.0 %
Date: 2017-11-13 Branches: 0 22 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: logutmp.c,v 1.13 2016/08/14 22:57:31 guenther Exp $	*/
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/*
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 * Portions Copyright (c) 1988, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 * Portions Copyright (c) 1996, Jason Downs.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/tcp.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <utmp.h>
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#include <stdio.h>
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#include <string.h>
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#include <ttyent.h>
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#include "monitor.h"
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#include "extern.h"
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static int fd = -1;
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static int topslot = -1;
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/*
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 * Special versions of login()/logout() which hold the utmp file open,
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 * for use with ftpd.
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 */
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void
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ftpd_login(struct utmp *ut)
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{
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	struct utmp ubuf;
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	/*
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	 * First, loop through /etc/ttys, if needed, to initialize the
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	 * top of the tty slots, since ftpd has no tty.
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	 */
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	if (topslot < 0) {
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		topslot = 0;
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		while (getttyent() != (struct ttyent *)NULL)
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			topslot++;
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	}
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	if ((topslot < 0) || ((fd < 0) &&
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	    (fd = open(_PATH_UTMP, O_RDWR|O_CREAT, 0644)) < 0))
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		return;
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	/*
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	 * Now find a slot that's not in use...
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	 */
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	(void)lseek(fd, (off_t)topslot * sizeof(struct utmp), SEEK_SET);
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	while (1) {
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		if (read(fd, &ubuf, sizeof(struct utmp)) ==
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		    sizeof(struct utmp)) {
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			if (!ubuf.ut_name[0]) {
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				(void)lseek(fd, -(off_t)sizeof(struct utmp),
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				    SEEK_CUR);
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				break;
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			}
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			topslot++;
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		} else {
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			(void)lseek(fd, (off_t)topslot * sizeof(struct utmp),
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			    SEEK_SET);
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			break;
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		}
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	}
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	(void)write(fd, ut, sizeof(struct utmp));
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}
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int
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ftpd_logout(char *line)
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{
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	struct timeval tv;
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	struct utmp ut;
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	int rval;
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	rval = 0;
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	if (fd < 0)
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		return(rval);
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	(void)lseek(fd, 0, SEEK_SET);
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	while (read(fd, &ut, sizeof(struct utmp)) == sizeof(struct utmp)) {
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		if (!ut.ut_name[0] ||
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		    strncmp(ut.ut_line, line, UT_LINESIZE))
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			continue;
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		bzero(ut.ut_name, UT_NAMESIZE);
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		bzero(ut.ut_host, UT_HOSTSIZE);
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		gettimeofday(&tv, NULL);
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		ut.ut_time = tv.tv_sec;
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		(void)lseek(fd, -(off_t)sizeof(struct utmp), SEEK_CUR);
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		(void)write(fd, &ut, sizeof(struct utmp));
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		rval = 1;
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	}
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	return(rval);
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}