shadow/libmisc/sulog.c

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/*
* Copyright 1989 - 1992, Julianne Frances Haugh
* 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. Neither the name of Julianne F. Haugh 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 JULIE HAUGH 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 JULIE HAUGH 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>
#include "rcsid.h"
RCSID("$Id: sulog.c,v 1.5 2000/08/26 18:27:17 marekm Exp $")
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <time.h>
#include "prototypes.h"
#include "defines.h"
#include "getdef.h"
/*
* sulog - log a SU command execution result
*/
void
sulog(const char *tty, int success, const char *oldname, const char *name)
{
char *sulog_file;
time_t now;
struct tm *tm;
FILE *fp;
mode_t oldmask;
if ((sulog_file = getdef_str("SULOG_FILE")) == (char *) 0)
return;
oldmask = umask(077);
fp = fopen(sulog_file, "a+");
umask(oldmask);
if (fp == (FILE *) 0)
return; /* can't open or create logfile */
time(&now);
tm = localtime(&now);
fprintf(fp, "SU %.02d/%.02d %.02d:%.02d %c %.6s %s-%s\n",
tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min,
success ? '+':'-', tty, oldname, name);
fflush(fp);
fclose(fp);
}