mirror of
https://github.com/sheumann/hush.git
synced 2024-11-18 17:10:36 +00:00
86 lines
2.5 KiB
C
86 lines
2.5 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.
|
||
|
|
*----------------------------------------------------------------------
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <utmp.h>
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <time.h>
|
||
|
|
#include <busybox.h>
|
||
|
|
|
||
|
|
extern int who_main(int argc, char **argv)
|
||
|
|
{
|
||
|
|
struct utmp *ut;
|
||
|
|
struct stat st;
|
||
|
|
int devlen, len;
|
||
|
|
time_t now, idle;
|
||
|
|
|
||
|
|
if (argc > 1)
|
||
|
|
show_usage();
|
||
|
|
|
||
|
|
setutent();
|
||
|
|
devlen = sizeof("/dev/") - 1;
|
||
|
|
printf("USER TTY IDLE FROM HOST\n");
|
||
|
|
|
||
|
|
while ((ut = getutent()) != NULL) {
|
||
|
|
char name[40];
|
||
|
|
|
||
|
|
if (ut->ut_user[0] && ut->ut_type == USER_PROCESS) {
|
||
|
|
len = strlen(ut->ut_line);
|
||
|
|
if (ut->ut_line[0] == '/') {
|
||
|
|
strncpy(name, ut->ut_line, len);
|
||
|
|
name[len] = '\0';
|
||
|
|
strcpy(ut->ut_line, ut->ut_line + devlen);
|
||
|
|
} else {
|
||
|
|
strcpy(name, "/dev/");
|
||
|
|
strncpy(name+devlen, ut->ut_line, len);
|
||
|
|
name[devlen+len] = '\0';
|
||
|
|
}
|
||
|
|
|
||
|
|
printf("%-10s %-8s ", ut->ut_user, ut->ut_line);
|
||
|
|
|
||
|
|
if (stat(name, &st) == 0) {
|
||
|
|
now = time(NULL);
|
||
|
|
idle = now - st.st_atime;
|
||
|
|
|
||
|
|
if (idle < 60)
|
||
|
|
printf("00:00m ");
|
||
|
|
else if (idle < (60 * 60))
|
||
|
|
printf("00:%02dm ", (int)(idle / 60));
|
||
|
|
else if (idle < (24 * 60 * 60))
|
||
|
|
printf("%02d:%02dm ", (int)(idle / (60 * 60)),
|
||
|
|
(int)(idle % (60 * 60)) / 60);
|
||
|
|
else if (idle < (24 * 60 * 60 * 365))
|
||
|
|
printf("%03ddays ", (int)(idle / (24 * 60 * 60)));
|
||
|
|
else
|
||
|
|
printf("%02dyears ", (int) (idle / (24 * 60 * 60 * 365)));
|
||
|
|
} else
|
||
|
|
printf("%-8s ", "?");
|
||
|
|
|
||
|
|
printf("%-12.12s %s\n", ctime(&(ut->ut_tv.tv_sec)) + 4, ut->ut_host);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
endutent();
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|