//

// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

/*

 * Portions Copyright (c) 1988, 1993

 *	The Regents of the University of California.  All rights reserved.

 * Portions Copyright (c) 1996, Jason Downs.  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. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *	This product includes software developed by the University of

 *	California, Berkeley and its contributors.

 * 4. 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.

 */

/*

 * From: OpenBSD: logutmp.c,v 1.1 1996/06/18 10:09:23 downsj Exp

 * From: OpenBSD: logutmp.c,v 1.2 1998/07/13 02:11:17 millert Exp

 */

char logutmp_rcsid[] =

  "$Id: logutmp.c,v 1.4 1999/07/16 01:12:54 dholland Exp $";

#include <sys/types.h>

#include <fcntl.h>

#include <unistd.h>

#include <stdlib.h>

#include <utmp.h>

#include <stdio.h>

#include <string.h>

//#ifndef __linux__

//#include <ttyent.h>

//#endif

#include "extern.h"

typedef struct utmp UTMP;

#ifndef __linux__

static int fd = -1;

static int topslot = -1;

#endif

/*

 * Special versions of login()/logout() which hold the utmp file open,

 * for use with ftpd.

 */

void

login(const UTMP *ut)

{

#ifndef __linux__

	UTMP ubuf;

	/*

	 * First, loop through /etc/ttys, if needed, to initialize the

	 * top of the tty slots, since ftpd has no tty.

	 */

	if (topslot < 0) {

		topslot = 0;

	}

	if ((topslot < 0) || ((fd < 0)

	    && (fd = open(_PATH_UTMP, O_RDWR|O_CREAT, 0644)) < 0))

	    	return;

	/*

	 * Now find a slot that's not in use...

	 */

	(void)lseek(fd, (off_t)(topslot * sizeof(UTMP)), SEEK_SET);

	while (1) {

		if (read(fd, &ubuf, sizeof(UTMP)) == sizeof(UTMP)) {

			if (!ubuf.ut_name[0]) {

				(void)lseek(fd, -(off_t)sizeof(UTMP), SEEK_CUR);

				break;

			}

			topslot++;

		} else {

			(void)lseek(fd, (off_t)(topslot * sizeof(UTMP)), SEEK_SET);

			break;

		}

	}

	(void)write(fd, ut, sizeof(UTMP));

#else

	(void)ut;

#endif

}

int

logout(register const char *line)

{

#ifndef __linux__

	UTMP ut;

	int rval;

	rval = 0;

	if (fd < 0)

		return(rval);

	(void)lseek(fd, 0, SEEK_SET);

	while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) {

		if (!ut.ut_name[0]

		    || strncmp(ut.ut_line, line, UT_LINESIZE))

			continue;

		bzero(ut.ut_name, UT_NAMESIZE);

		bzero(ut.ut_host, UT_HOSTSIZE);

		(void)lseek(fd, -(off_t)sizeof(UTMP), SEEK_CUR);

		(void)write(fd, &ut, sizeof(UTMP));

		rval = 1;

	}

	return(rval);

#else

	(void)line;

	return 1;

#endif

}