From 04f801456ad64b8f08bb8643cf19e0b9ca477b36 Mon Sep 17 00:00:00 2001 From: Damien Miller Date: Fri, 19 Nov 1999 15:32:34 +1100 Subject: - Renamed BSD helper function files to bsd-* - Added tests for login and daemon and OpenBSD replacements for when they are absent. --- bsd-login.c | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 bsd-login.c (limited to 'bsd-login.c') diff --git a/bsd-login.c b/bsd-login.c new file mode 100644 index 000000000..8c84272f8 --- /dev/null +++ b/bsd-login.c @@ -0,0 +1,83 @@ +/* $OpenBSD: login.c,v 1.5 1998/07/13 02:11:12 millert 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. 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. + */ + +#include "config.h" +#ifndef HAVE_LOGIN + +#if defined(LIBC_SCCS) && !defined(lint) +/* from: static char sccsid[] = "@(#)login.c 8.1 (Berkeley) 6/4/93"; */ +static char *rcsid = "$Id: bsd-login.c,v 1.1 1999/11/19 04:32:34 damien Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include + +#include +#include +#include +#include +#include + +void +login(utp) + struct utmp *utp; +{ + struct utmp old_ut; + register int fd; + int tty; + + tty = ttyslot(); + if (tty > 0 && (fd = open(_PATH_UTMP, O_RDWR|O_CREAT, 0644)) >= 0) { + (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); + /* + * Prevent luser from zero'ing out ut_host. + * If the new ut_line is empty but the old one is not + * and ut_line and ut_name match, preserve the old ut_line. + */ + if (read(fd, &old_ut, sizeof(struct utmp)) == + sizeof(struct utmp) && utp->ut_host[0] == '\0' && + old_ut.ut_host[0] != '\0' && + strncmp(old_ut.ut_line, utp->ut_line, UT_LINESIZE) == 0 && + strncmp(old_ut.ut_name, utp->ut_name, UT_NAMESIZE) == 0) + (void)memcpy(utp->ut_host, old_ut.ut_host, UT_HOSTSIZE); + (void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET); + (void)write(fd, utp, sizeof(struct utmp)); + (void)close(fd); + } + if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) { + (void)write(fd, utp, sizeof(struct utmp)); + (void)close(fd); + } +} + +#endif /* HAVE_LOGIN */ -- cgit v1.2.3