NetBSD-5.0.2/usr.sbin/ac/ac.c
/* $NetBSD: ac.c,v 1.23 2006/05/26 02:16:17 jnemeth Exp $ */
/*
* Copyright (c) 1994 Christopher G. Demetriou
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the
* NetBSD Project. See http://www.NetBSD.org/ for
* information about NetBSD.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
*
* <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
*
*
* @(#)Copyright (c) 1994, Simon J. Gerraty.
*
* This is free software. It comes with NO WARRANTY.
* Permission to use, modify and distribute this source code
* is granted subject to the following conditions.
* 1/ that the above copyright notice and this notice
* are preserved in all copies and that due credit be given
* to the author.
* 2/ that any changes to this code are clearly commented
* as such so that the author does not get blamed for bugs
* other than his own.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: ac.c,v 1.23 2006/05/26 02:16:17 jnemeth Exp $");
#endif
#include <sys/types.h>
#include <err.h>
#include <errno.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <utmp.h>
#include <ttyent.h>
/*
* this is for our list of currently logged in sessions
*/
struct utmp_list {
struct utmp_list *next;
struct utmp usr;
};
/*
* this is for our list of users that are accumulating time.
*/
struct user_list {
struct user_list *next;
char name[UT_NAMESIZE+1];
time_t secs;
};
/*
* this is for chosing whether to ignore a login
*/
struct tty_list {
struct tty_list *next;
char name[UT_LINESIZE+3];
int len;
int ret;
};
/*
* globals - yes yuk
*/
static time_t Total = 0;
static time_t FirstTime = 0;
static int Flags = 0;
static struct user_list *Users = NULL;
static struct tty_list *Ttys = NULL;
static int Maxcon = 0, Ncon = 0;
static char (*Con)[UT_LINESIZE] = NULL;
#define NEW(type) (type *)malloc(sizeof (type))
#define is_login_tty(line) \
(bsearch(line, Con, Ncon, sizeof(Con[0]), compare) != NULL)
#define AC_W 1 /* not _PATH_WTMP */
#define AC_D 2 /* daily totals (ignore -p) */
#define AC_P 4 /* per-user totals */
#define AC_U 8 /* specified users only */
#define AC_T 16 /* specified ttys only */
#ifdef DEBUG
static int Debug = 0;
#endif
static int ac(FILE *);
static struct tty_list *add_tty(char *);
static int do_tty(char *);
static FILE *file(const char *);
static struct utmp_list *log_in(struct utmp_list *, struct utmp *);
static struct utmp_list *log_out(struct utmp_list *, struct utmp *);
#ifdef notdef
static int on_console(struct utmp_list *);
#endif
static void find_login_ttys(void);
static void show(const char *, time_t);
static void show_today(struct user_list *, struct utmp_list *,
time_t);
static void show_users(struct user_list *);
static struct user_list *update_user(struct user_list *, char *, time_t);
static int compare(const void *, const void *);
static void usage(void);
/*
* open wtmp or die
*/
static FILE *
file(const char *name)
{
FILE *fp;
if (strcmp(name, "-") == 0)
fp = stdin;
else if ((fp = fopen(name, "r")) == NULL)
err(1, "%s", name);
/* in case we want to discriminate */
if (strcmp(_PATH_WTMP, name))
Flags |= AC_W;
return fp;
}
static struct tty_list *
add_tty(char *name)
{
struct tty_list *tp;
char *rcp;
Flags |= AC_T;
if ((tp = NEW(struct tty_list)) == NULL)
err(1, "malloc");
tp->len = 0; /* full match */
tp->ret = 1; /* do if match */
if (*name == '!') { /* don't do if match */
tp->ret = 0;
name++;
}
(void)strlcpy(tp->name, name, sizeof (tp->name));
if ((rcp = strchr(tp->name, '*')) != NULL) { /* wild card */
*rcp = '\0';
tp->len = strlen(tp->name); /* match len bytes only */
}
tp->next = Ttys;
Ttys = tp;
return Ttys;
}
/*
* should we process the named tty?
*/
static int
do_tty(char *name)
{
struct tty_list *tp;
int def_ret = 0;
for (tp = Ttys; tp != NULL; tp = tp->next) {
if (tp->ret == 0) /* specific don't */
def_ret = 1; /* default do */
if (tp->len != 0) {
if (strncmp(name, tp->name, tp->len) == 0)
return tp->ret;
} else {
if (strncmp(name, tp->name, sizeof (tp->name)) == 0)
return tp->ret;
}
}
return def_ret;
}
static int
compare(const void *a, const void *b)
{
return strncmp(a, b, UT_LINESIZE);
}
/*
* Deal correctly with multiple virtual consoles/login ttys.
* We read the ttyent's from /etc/ttys and classify as login
* ttys ones that are running getty and they are turned on.
*/
static void
find_login_ttys(void)
{
struct ttyent *tty;
char (*nCon)[UT_LINESIZE];
if ((Con = malloc((Maxcon = 10) * sizeof(Con[0]))) == NULL)
err(1, "malloc");
setttyent();
while ((tty = getttyent()) != NULL)
if ((tty->ty_status & TTY_ON) != 0 &&
strstr(tty->ty_getty, "getty") != NULL) {
if (Ncon == Maxcon) {
if ((nCon = realloc(Con, (Maxcon + 10) *
sizeof(Con[0]))) == NULL)
err(1, "malloc");
Con = nCon;
Maxcon += 10;
}
(void)strncpy(Con[Ncon++], tty->ty_name, UT_LINESIZE);
}
endttyent();
qsort(Con, Ncon, sizeof(Con[0]), compare);
}
#ifdef notdef
/*
* is someone logged in on Console/login tty?
*/
static int
on_console(struct utmp_list *head)
{
struct utmp_list *up;
for (up = head; up; up = up->next)
if (is_login_tty(up->usr.ut_line))
return 1;
return 0;
}
#endif
/*
* update user's login time
*/
static struct user_list *
update_user(struct user_list *head, char *name, time_t secs)
{
struct user_list *up;
for (up = head; up != NULL; up = up->next) {
if (strncmp(up->name, name, sizeof (up->name) - 1) == 0) {
up->secs += secs;
Total += secs;
return head;
}
}
/*
* not found so add new user unless specified users only
*/
if (Flags & AC_U)
return head;
if ((up = NEW(struct user_list)) == NULL)
err(1, "malloc");
up->next = head;
(void)strlcpy(up->name, name, sizeof (up->name));
up->secs = secs;
Total += secs;
return up;
}
int
main(int argc, char **argv)
{
FILE *fp;
int c;
fp = NULL;
while ((c = getopt(argc, argv, "Ddpt:w:")) != -1) {
switch (c) {
#ifdef DEBUG
case 'D':
Debug++;
break;
#endif
case 'd':
Flags |= AC_D;
break;
case 'p':
Flags |= AC_P;
break;
case 't': /* only do specified ttys */
add_tty(optarg);
break;
case 'w':
fp = file(optarg);
break;
case '?':
default:
usage();
}
}
find_login_ttys();
if (optind < argc) {
/*
* initialize user list
*/
for (; optind < argc; optind++) {
Users = update_user(Users, argv[optind], 0L);
}
Flags |= AC_U; /* freeze user list */
}
if (Flags & AC_D)
Flags &= ~AC_P;
if (fp == NULL) {
/*
* if _PATH_WTMP does not exist, exit quietly
*/
if (access(_PATH_WTMP, 0) != 0 && errno == ENOENT)
return 0;
fp = file(_PATH_WTMP);
}
ac(fp);
return 0;
}
/*
* print login time in decimal hours
*/
static void
show(const char *name, time_t secs)
{
(void)printf("\t%-*s %8.2f\n", UT_NAMESIZE, name,
((double)secs / 3600));
}
static void
show_users(struct user_list *list)
{
struct user_list *lp;
for (lp = list; lp; lp = lp->next)
show(lp->name, lp->secs);
}
/*
* print total login time for 24hr period in decimal hours
*/
static void
show_today(struct user_list *users, struct utmp_list *logins, time_t secs)
{
struct user_list *up;
struct utmp_list *lp;
char date[64];
time_t yesterday = secs - 1;
(void)strftime(date, sizeof (date), "%b %e total",
localtime(&yesterday));
/* restore the missing second */
yesterday++;
for (lp = logins; lp != NULL; lp = lp->next) {
secs = yesterday - lp->usr.ut_time;
Users = update_user(Users, lp->usr.ut_name, secs);
lp->usr.ut_time = yesterday; /* as if they just logged in */
}
secs = 0;
for (up = users; up != NULL; up = up->next) {
secs += up->secs;
up->secs = 0; /* for next day */
}
if (secs)
(void)printf("%s %11.2f\n", date, ((double)secs / 3600));
}
/*
* log a user out and update their times.
* if ut_line is "~", we log all users out as the system has
* been shut down.
*/
static struct utmp_list *
log_out(struct utmp_list *head, struct utmp *up)
{
struct utmp_list *lp, *lp2, *tlp;
time_t secs;
for (lp = head, lp2 = NULL; lp != NULL; )
if (*up->ut_line == '~' || strncmp(lp->usr.ut_line, up->ut_line,
sizeof (up->ut_line)) == 0) {
secs = up->ut_time - lp->usr.ut_time;
Users = update_user(Users, lp->usr.ut_name, secs);
#ifdef DEBUG
if (Debug)
printf("%-.*s %-.*s: %-.*s logged out (%2d:%02d:%02d)\n",
19, ctime(&up->ut_time),
sizeof (lp->usr.ut_line), lp->usr.ut_line,
sizeof (lp->usr.ut_name), lp->usr.ut_name,
secs / 3600, (secs % 3600) / 60, secs % 60);
#endif
/*
* now lose it
*/
tlp = lp;
lp = lp->next;
if (tlp == head) {
head = lp;
} else if (lp2 != NULL)
lp2->next = lp;
free(tlp);
} else {
lp2 = lp;
lp = lp->next;
}
return head;
}
/*
* if do_tty says ok, login a user
*/
struct utmp_list *
log_in(struct utmp_list *head, struct utmp *up)
{
struct utmp_list *lp;
/*
* If we are doing specified ttys only, we ignore
* anything else.
*/
if (Flags & AC_T)
if (!do_tty(up->ut_line))
return head;
/*
* go ahead and log them in
*/
if ((lp = NEW(struct utmp_list)) == NULL)
err(1, "malloc");
lp->next = head;
head = lp;
memmove((char *)&lp->usr, (char *)up, sizeof (struct utmp));
#ifdef DEBUG
if (Debug) {
printf("%-.*s %-.*s: %-.*s logged in", 19,
ctime(&lp->usr.ut_time), sizeof (up->ut_line),
up->ut_line, sizeof (up->ut_name), up->ut_name);
if (*up->ut_host)
printf(" (%-.*s)", sizeof (up->ut_host), up->ut_host);
putchar('\n');
}
#endif
return head;
}
static int
ac(FILE *fp)
{
struct utmp_list *lp, *head = NULL;
struct utmp usr;
struct tm *ltm;
time_t secs = 0;
int day = -1;
while (fread((char *)&usr, sizeof(usr), 1, fp) == 1) {
if (!FirstTime)
FirstTime = usr.ut_time;
if (Flags & AC_D) {
ltm = localtime(&usr.ut_time);
if (day >= 0 && day != ltm->tm_yday) {
day = ltm->tm_yday;
/*
* print yesterday's total
*/
secs = usr.ut_time;
secs -= ltm->tm_sec;
secs -= 60 * ltm->tm_min;
secs -= 3600 * ltm->tm_hour;
show_today(Users, head, secs);
} else
day = ltm->tm_yday;
}
switch(*usr.ut_line) {
case '|':
secs = usr.ut_time;
break;
case '{':
secs -= usr.ut_time;
/*
* adjust time for those logged in
*/
for (lp = head; lp != NULL; lp = lp->next)
lp->usr.ut_time -= secs;
break;
case '~': /* reboot or shutdown */
head = log_out(head, &usr);
FirstTime = usr.ut_time; /* shouldn't be needed */
break;
default:
/*
* if they came in on tty[p-y]*, then it is only
* a login session if the ut_host field is non-empty,
* or this tty is a login tty [eg. a console]
*/
if (*usr.ut_name) {
if ((strncmp(usr.ut_line, "tty", 3) != 0 &&
strncmp(usr.ut_line, "dty", 3) != 0) ||
strchr("pqrstuvwxyzPQRST", usr.ut_line[3]) == 0 ||
*usr.ut_host != '\0' ||
is_login_tty(usr.ut_line))
head = log_in(head, &usr);
#ifdef DEBUG
else if (Debug)
printf("%-.*s %-.*s: %-.*s ignored\n",
19, ctime(&usr.ut_time),
sizeof (usr.ut_line), usr.ut_line,
sizeof (usr.ut_name), usr.ut_name);
#endif
} else
head = log_out(head, &usr);
break;
}
}
(void)fclose(fp);
usr.ut_time = time((time_t *)0);
(void)strcpy(usr.ut_line, "~");
if (Flags & AC_D) {
ltm = localtime(&usr.ut_time);
if (day >= 0 && day != ltm->tm_yday) {
/*
* print yesterday's total
*/
secs = usr.ut_time;
secs -= ltm->tm_sec;
secs -= 60 * ltm->tm_min;
secs -= 3600 * ltm->tm_hour;
show_today(Users, head, secs);
}
}
/*
* anyone still logged in gets time up to now
*/
head = log_out(head, &usr);
if (Flags & AC_D)
show_today(Users, head, time((time_t *)0));
else {
if (Flags & AC_P)
show_users(Users);
show("total", Total);
}
return 0;
}
static void
usage(void)
{
(void)fprintf(stderr,
"usage: %s [-d | -p] [-t tty] [-w wtmp] [users ...]\n",
getprogname());
exit(1);
}