/*
 * Copyright (c) 1988 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)login.c	5.1 (Berkeley) 9/27/88";
#endif /* LIBC_SCCS and not lint */

#include <sys/types.h>
#include <sys/file.h>
#include <utmp.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/stat.h>

#define	UTMPFILE	"/etc/utmp"
#define	WTMPFILE	"/usr/adm/wtmp"

void
login(ut)
	struct utmp *ut;
{
	register int fd;
	int tty;
	off_t lseek();

	tty = ttyslot();
	if (tty > 0 && (fd = open(UTMPFILE, O_WRONLY, 0)) >= 0) {
		(void)lseek(fd, (long)(tty * sizeof(struct utmp)), L_SET);
		(void)write(fd, (char *)ut, sizeof(struct utmp));
		(void)close(fd);
	}
	if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) >= 0) {
		(void)write(fd, (char *)ut, sizeof(struct utmp));
		(void)close(fd);
	}
}
/*
 * Copyright (c) 1988 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)logout.c	5.1 (Berkeley) 8/31/88";
#endif /* LIBC_SCCS and not lint */

logout(line)
	register char *line;
{
	register FILE *fp;
	struct utmp ut;
	int rval;
	time_t time();

	if (!(fp = fopen(UTMPFILE, "r+")))
		return(0);
	rval = 1;
	while (fread((char *)&ut, sizeof(struct utmp), 1, fp) == 1) {
		if (!ut.ut_name[0] ||
		    strncmp(ut.ut_line, line, sizeof(ut.ut_line)))
			continue;
		bzero(ut.ut_name, sizeof(ut.ut_name));
		bzero(ut.ut_host, sizeof(ut.ut_host));
		(void)time(&ut.ut_time);
		(void)fseek(fp, (long)-sizeof(struct utmp), L_INCR);
		(void)fwrite((char *)&ut, sizeof(struct utmp), 1, fp);
		(void)fseek(fp, (long)0, L_INCR);
		rval = 0;
	}
	(void)fclose(fp);
	return(rval);
}
/*
 * Copyright (c) 1988 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)logwtmp.c	5.2 (Berkeley) 9/20/88";
#endif /* LIBC_SCCS and not lint */

logwtmp(line, name, host)
	char *line, *name, *host;
{
	struct utmp ut;
	struct stat buf;
	int fd;
	time_t time();
	char *strncpy();

	if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
		return;
	if (!fstat(fd, &buf)) {
		(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));
		(void)time(&ut.ut_time);
		if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
		    sizeof(struct utmp))
			(void)ftruncate(fd, buf.st_size);
	}
	(void)close(fd);
}