mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*----------------------------------------------------------------------
|
|
* Mini who is used to display user name, login time,
|
|
* idle time and host name.
|
|
*
|
|
* Author: Da Chen <dchen@ayrnetworks.com>
|
|
*
|
|
* This is a free document; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation:
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*
|
|
* Copyright (c) 2002 AYR Networks, Inc.
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
|
|
*
|
|
*----------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "busybox.h"
|
|
#include <utmp.h>
|
|
#include <time.h>
|
|
|
|
static const char * idle_string (time_t t)
|
|
{
|
|
static char str[6];
|
|
|
|
time_t s = time(NULL) - t;
|
|
|
|
if (s < 60)
|
|
return ".";
|
|
if (s < (24 * 60 * 60)) {
|
|
sprintf (str, "%02d:%02d",
|
|
(int) (s / (60 * 60)),
|
|
(int) ((s % (60 * 60)) / 60));
|
|
return str;
|
|
}
|
|
return "old";
|
|
}
|
|
|
|
int who_main(int argc, char **argv)
|
|
{
|
|
struct utmp *ut;
|
|
struct stat st;
|
|
char *name;
|
|
|
|
if (argc > 1) {
|
|
bb_show_usage();
|
|
}
|
|
|
|
setutent();
|
|
printf("USER TTY IDLE TIME HOST\n");
|
|
while ((ut = getutent()) != NULL) {
|
|
if (ut->ut_user[0] && ut->ut_type == USER_PROCESS) {
|
|
time_t thyme = ut->ut_tv.tv_sec;
|
|
|
|
/* ut->ut_line is device name of tty - "/dev/" */
|
|
name = concat_path_file("/dev", ut->ut_line);
|
|
printf("%-10s %-8s %-8s %-12.12s %s\n", ut->ut_user, ut->ut_line,
|
|
(stat(name, &st)) ? "?" : idle_string(st.st_atime),
|
|
ctime(&thyme) + 4, ut->ut_host);
|
|
if (ENABLE_FEATURE_CLEAN_UP) free(name);
|
|
}
|
|
}
|
|
if (ENABLE_FEATURE_CLEAN_UP) endutent();
|
|
return 0;
|
|
}
|