ea7965eb77
- make them symmetric - add a function to open the wtmp file explicitly very early in the game
146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/* $NetBSD: logwtmp.c,v 1.24 2005/06/23 04:20:41 christos Exp $ */
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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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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: logwtmp.c,v 1.24 2005/06/23 04:20:41 christos Exp $");
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <syslog.h>
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#include <unistd.h>
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#ifdef SUPPORT_UTMP
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#include <utmp.h>
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#endif
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#ifdef SUPPORT_UTMPX
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#include <utmpx.h>
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#endif
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#include <util.h>
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#ifdef KERBEROS5
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#include <krb5/krb5.h>
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#endif
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#include "extern.h"
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#ifdef SUPPORT_UTMP
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static int fd = -1;
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void
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ftpd_initwtmp(void)
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{
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const char *wf = _PATH_WTMP;
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if ((fd = open(wf, O_WRONLY|O_APPEND, 0)) == -1)
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syslog(LOG_ERR, "Cannot open `%s' (%m)", wf);
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}
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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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ftpd_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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struct stat buf;
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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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(void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
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(void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
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(void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
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(void)time(&ut.ut_time);
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if (write(fd, (char *)&ut, sizeof(struct utmp)) !=
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sizeof(struct utmp))
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(void)ftruncate(fd, buf.st_size);
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}
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}
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#endif
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#ifdef SUPPORT_UTMPX
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static int fdx = -1;
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void
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ftpd_initwtmpx(void)
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{
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const char *wf = _PATH_WTMPX;
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if ((fd = open(wf, O_WRONLY|O_APPEND, 0)) == -1)
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syslog(LOG_ERR, "Cannot open `%s' (%m)", wf);
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}
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void
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ftpd_logwtmpx(const char *line, const char *name, const char *host,
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struct sockinet *haddr, int status, int utx_type)
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{
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struct utmpx ut;
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struct stat buf;
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if (fdx < 0)
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return;
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if (fstat(fdx, &buf) == 0) {
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(void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
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(void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
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(void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
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if (haddr)
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(void)memcpy(&ut.ut_ss, &haddr->si_su, haddr->su_len);
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else
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(void)memset(&ut.ut_ss, 0, sizeof(ut.ut_ss));
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ut.ut_type = utx_type;
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if (WIFEXITED(status))
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ut.ut_exit.e_exit = (uint16_t)WEXITSTATUS(status);
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if (WIFSIGNALED(status))
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ut.ut_exit.e_termination = (uint16_t)WTERMSIG(status);
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(void)gettimeofday(&ut.ut_tv, NULL);
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if(write(fdx, (char *)&ut, sizeof(struct utmpx)) !=
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sizeof(struct utmpx))
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(void)ftruncate(fdx, buf.st_size);
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}
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}
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#endif
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