mirror of
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139 lines
4.2 KiB
C
139 lines
4.2 KiB
C
/*
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Copyright (C) 1996-2025 Free Software Foundation, Inc.
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This file is part of GNU Inetutils.
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GNU Inetutils is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
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your option) any later version.
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GNU Inetutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see `http://www.gnu.org/licenses/'. */
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/*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. 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 <config.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <utmp.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include "extern.h"
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#if !defined _PATH_WTMP && defined WTMP_FILE
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# define _PATH_WTMP WTMP_FILE
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#endif
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/*
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* Modified version of logwtmp that holds wtmp file open
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* after first call, for use with ftp (which may chroot
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* after login, but before logout).
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*/
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void
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logwtmp (const char *line, const char *name, const char *host)
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{
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struct utmp ut;
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#if _HAVE_UT_TV - 0
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struct timeval tv;
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#endif
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/* Set information in new entry. */
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memset (&ut, 0, sizeof (ut));
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#if _HAVE_UT_TYPE - 0
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ut.ut_type = USER_PROCESS;
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#endif
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strncpy (ut.ut_line, line, sizeof ut.ut_line);
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strncpy (ut.ut_name, name, sizeof ut.ut_name);
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#if _HAVE_UT_HOST - 0
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strncpy (ut.ut_host, host, sizeof ut.ut_host);
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#endif
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#if _HAVE_UT_TV - 0
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gettimeofday (&tv, NULL);
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ut.ut_tv.tv_sec = tv.tv_sec;
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ut.ut_tv.tv_usec = tv.tv_usec;
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#else
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time (&ut.ut_time);
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#endif
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#if defined HAVE_UTMPNAME && defined HAVE_SETUTENT_R
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/* XXX I think frobbing the details of DATA is GNU libc specific. */
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{
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static struct utmp_data data = { -1 };
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if (data.ut_fd < 0)
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/* Open the file. */
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{
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/* Tell that we want to use the WTMP file. */
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if (utmpname (_PATH_WTMP) == 0)
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return;
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/* Open WTMP file. */
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setutent_r (&data);
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}
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/* Position at end of file. */
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data.loc_utmp = lseek (data.ut_fd, 0, SEEK_END);
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if (data.loc_utmp == -1)
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return;
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/* Write the entry. */
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pututline_r (&ut, &data);
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}
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#else
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/* Do things the old way. */
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{
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struct utmp ut;
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struct stat buf;
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static int fd = -1;
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if (fd < 0 && (fd = open (_PATH_WTMP, O_WRONLY | O_APPEND, 0)) < 0)
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return;
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if (fstat (fd, &buf) == 0)
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{
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if (write (fd, (char *) &ut, sizeof (struct utmp)) !=
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sizeof (struct utmp))
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ftruncate (fd, buf.st_size);
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}
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}
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#endif
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}
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