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* Copyright 1989 - 1994, Julianne Frances Haugh
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* Copyright (c) 1989 - 1994, Julianne Frances Haugh
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* Copyright (c) 1996 - 2000, Marek Michałkiewicz
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* Copyright (c) 2000 - 2006, Tomasz Kłoczko
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* Copyright (c) 2007 - 2009, Nicolas François
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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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 Julianne F. Haugh 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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* 3. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH 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 JULIE HAUGH 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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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <config.h>
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#ident "$Id: lastlog.c 1751 2008-02-03 16:28:03Z nekral-guest $"
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#ident "$Id: lastlog.c 2502 2009-03-13 22:20:20Z nekral-guest $"
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#include <getopt.h>
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#include <lastlog.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "defines.h"
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#include "prototypes.h"
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* Needed for MkLinux DR1/2/2.1 - J.
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#ifndef LASTLOG_FILE
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#define LASTLOG_FILE "/var/log/lastlog"
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static FILE *lastlogfile; /* lastlog file stream */
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static long umin; /* if uflg, only display users with uid >= umin */
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static long umax; /* if uflg, only display users with uid <= umax */
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static unsigned long umin; /* if uflg and has_umin, only display users with uid >= umin */
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static bool has_umin = false;
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static unsigned long umax; /* if uflg and has_umax, only display users with uid <= umax */
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static bool has_umax = false;
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static int days; /* number of days to consider for print command */
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static time_t seconds; /* that number of days in seconds */
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static int inverse_days; /* number of days to consider for print command */
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static time_t inverse_seconds; /* that number of days in seconds */
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static int uflg = 0; /* print only an user of range of users */
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static int tflg = 0; /* print is restricted to most recent days */
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static int bflg = 0; /* print excludes most recent days */
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static struct lastlog lastlog; /* scratch structure to play with ... */
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static struct stat statbuf; /* fstat buffer for file size */
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static bool uflg = false; /* print only an user of range of users */
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static bool tflg = false; /* print is restricted to most recent days */
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static bool bflg = false; /* print excludes most recent days */
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static struct passwd *pwent;
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#define NOW (time ((time_t *) 0))
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static void print_one (const struct passwd *pw)
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static bool once = false;
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#ifdef HAVE_STRFTIME
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offset = pw->pw_uid * sizeof (ll);
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if (offset <= (statbuf.st_size - sizeof (ll))) {
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/* fseeko errors are not really relevant for us. */
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assert ( fseeko (lastlogfile, offset, SEEK_SET) == 0 );
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/* lastlog is a sparse file. Even if no entries were
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* entered for this user, which should be able to get the
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* empty entry in this case.
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if (fread ((char *) &ll, sizeof (ll), 1, lastlogfile) != 1) {
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_("lastlog: Failed to get the entry for UID %d\n"),
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/* Outsize of the lastlog file.
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* Behave as if there were a missing entry (same behavior
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* as if we were reading an non existing entry in the
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* sparse lastlog file).
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memzero (&ll, sizeof (ll));
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/* Filter out entries that do not match with the -t or -b options */
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if (tflg && ((NOW - ll.ll_time) > seconds)) {
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if (bflg && ((NOW - ll.ll_time) < inverse_seconds)) {
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/* Print the header only once */
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#ifdef HAVE_LL_HOST
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puts (_("Username Port From Latest"));
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puts (_("Username Port Latest"));
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ll_time = lastlog.ll_time;
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ll_time = ll.ll_time;
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tm = localtime (&ll_time);
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#ifdef HAVE_STRFTIME
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strftime (ptime, sizeof (ptime), "%a %b %e %H:%M:%S %z %Y", tm);
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if (lastlog.ll_time == (time_t) 0)
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if (ll.ll_time == (time_t) 0) {
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cp = _("**Never logged in**\0");
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#ifdef HAVE_LL_HOST
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printf ("%-16s %-8.8s %-16.16s %s\n", pw->pw_name,
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lastlog.ll_line, lastlog.ll_host, cp);
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printf ("%-16s %-8.8s %-16.16s %s\n",
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pw->pw_name, ll.ll_line, ll.ll_host, cp);
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printf ("%-16s\t%-8.8s %s\n", pw->pw_name, lastlog.ll_line, cp);
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printf ("%-16s\t%-8.8s %s\n",
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pw->pw_name, ll.ll_line, cp);
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static void print (void)
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while ((pwent = getpwent ())) {
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user = pwent->pw_uid;
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((umin != -1 && user < (uid_t)umin) ||
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(umax != -1 && user > (uid_t)umax)))
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offset = user * sizeof lastlog;
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fseeko (lastlogfile, offset, SEEK_SET);
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if (fread ((char *) &lastlog, sizeof lastlog, 1,
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if (tflg && NOW - lastlog.ll_time > seconds)
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if (bflg && NOW - lastlog.ll_time < inverse_seconds)
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if (uflg && has_umin && has_umax && (umin == umax)) {
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print_one (getpwuid ((uid_t)umin));
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while ( (pwent = getpwent ()) != NULL ) {
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&& ( (has_umin && (pwent->pw_uid < (uid_t)umin))
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|| (has_umax && (pwent->pw_uid > (uid_t)umax)))) {
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int main (int argc, char **argv)
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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(void) setlocale (LC_ALL, "");
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(void) bindtextdomain (PACKAGE, LOCALEDIR);
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(void) textdomain (PACKAGE);
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{NULL, 0, NULL, '\0'}
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getopt_long (argc, argv, "ht:b:u:", longopts,
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while ((c = getopt_long (argc, argv, "ht:b:u:", longopts,
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days = atoi (optarg);
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seconds = days * DAY;
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days = atoi (optarg); /* FIXME */
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seconds = (time_t) days * DAY;
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inverse_days = atoi (optarg);
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inverse_seconds = inverse_days * DAY;
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inverse_days = atoi (optarg); /* FIXME */
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inverse_seconds = (time_t) inverse_days * DAY;
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* - a numerical login ID
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* - a range (-x, x-, x-y)
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pwent = xgetpwnam (optarg);
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/* local, no need for xgetpwnam */
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pwent = getpwnam (optarg);
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if (NULL != pwent) {
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umin = pwent->pw_uid;
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umin = (unsigned long) pwent->pw_uid;
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user = strtol(optarg, &endptr, 10);
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if (*optarg != '\0' && *endptr == '\0') {
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} else if (endptr[0] == '-' && endptr[1] == '\0') {
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} else if (*endptr == '-') {
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/* <userid>-<userid> */
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umax = atol(endptr+1);
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if (getrange (optarg,
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&umax, &has_umax) == 0) {
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_("Unknown user or range: %s\n"),
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_("lastlog: Unknown user or range: %s\n"),
added
removed
src/lastlog.c
