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authordg <dg@FreeBSD.org>1994-09-26 22:12:27 +0000
committerdg <dg@FreeBSD.org>1994-09-26 22:12:27 +0000
commit25c6f4e630fa8e9bdc04f65028e483e5dbd0af4c (patch)
treea8e7d7d7c8f16099b1715226abb7ee87802aced6 /usr.sbin/ac
parentc2f4b4213f23976e856dd9c2efcad777e3901b74 (diff)
downloadFreeBSD-src-25c6f4e630fa8e9bdc04f65028e483e5dbd0af4c.zip
FreeBSD-src-25c6f4e630fa8e9bdc04f65028e483e5dbd0af4c.tar.gz
ac(8) utility, brought over from FreeBSD 1.1.5.
Diffstat (limited to 'usr.sbin/ac')
-rw-r--r--usr.sbin/ac/Makefile18
-rw-r--r--usr.sbin/ac/ac.8166
-rw-r--r--usr.sbin/ac/ac.c557
3 files changed, 682 insertions, 59 deletions
diff --git a/usr.sbin/ac/Makefile b/usr.sbin/ac/Makefile
new file mode 100644
index 0000000..349e9ce
--- /dev/null
+++ b/usr.sbin/ac/Makefile
@@ -0,0 +1,18 @@
+# $Id: Makefile,v 1.1.1.1 1994/05/18 08:00:44 csgr Exp $
+
+PROG= ac
+MAN8= ac.8
+
+# If "CONSOLE_TTY" is not defined, this program is compatible with the
+# traditional implementation (using SunOS 4.x as the sample traditional
+# implementation). This is the default.
+#
+# If "CONSOLE_TTY" is defined, it must be defined to the appropriate
+# console name, e.g. "vga". Additionally, the various commented-out
+# sections of the man page should be uncommented. This is not the
+# default because of the inability to detect the proper console name
+# easily, especially on m68k systems, which can share binaries.
+#
+#CFLAGS+=-DCONSOLE_TTY=\"vga\"
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/ac/ac.8 b/usr.sbin/ac/ac.8
index 0c834a7..3c34716 100644
--- a/usr.sbin/ac/ac.8
+++ b/usr.sbin/ac/ac.8
@@ -1,5 +1,7 @@
-.\" Copyright (c) 1980, 1991, 1993
-.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Copyright (c) 1994 Simon J. Gerraty
+.\" 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
@@ -11,88 +13,118 @@
.\" 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 by the University of
-.\" California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
+.\" This product includes software developed by Christopher G. Demetriou.
+.\" 3. 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 REGENTS 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 THE REGENTS 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.
+.\" 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.
.\"
-.\" @(#)ac.8 8.2 (Berkeley) 4/19/94
+.\" $Id: ac.8,v 1.1.1.1 1994/05/18 08:00:45 csgr Exp $
.\"
-.Dd April 19, 1994
+.Dd March 15, 1994
.Dt AC 8
-.Os BSD 4
+.Os
.Sh NAME
.Nm ac
-.Nd display connect time accounting
+.Nd connect time accounting
.Sh SYNOPSIS
.Nm ac
-.Op Fl d
-.Op Fl p
-.Op Fl w Ar file
+.Op Fl dp
+.\".Op Fl c Ar console
+.Op Fl t Ar tty
+.Op Fl w Ar wtmp
.Op Ar users ...
.Sh DESCRIPTION
-If the file
+If the file
.Pa /var/log/wtmp
-exists,
-a record of individual
-login and logout times are written to it by
-.Xr init 8
-and
+exists, a record of individual login and logout
+times are written to it by
.Xr login 8
+and
+.Xr init 8 ,
respectively.
-The program
-.Nm ac
-examines these
-records and writes the accumulated connect time for all logins to the
-standard output.
+.Nm \&Ac
+examines these records and writes the accumulated connect time
+for all logins to the standard output.
.Pp
-Options available:
-.Bl -tag -width people
+The options are as follows:
+.Bl -tag -width indentXXX
.It Fl d
Display the connect times in 24 hour chunks.
+.\" .It Fl c Ar console
+.\" Use
+.\" .Ar console
+.\" as the name of the device that local X sessions (ut_host of ":0.0")
+.\" originate from. If any login has been recorded on
+.\" .Ar console
+.\" then these X sessions are ignored unless COMPAT_SUNOS was defined at
+.\" compile time.
.It Fl p
-Display individual user totals.
-.It Fl w Ar file
-Read raw connect time data from
-.Ar file
-instead of the default file
+Print individual users' totals.
+.It Fl t Ar tty
+Only do accounting logins on certain ttys. The
+.Ar tty
+specification can start with '!' to indicate not this
+.Ar tty
+and end with '*' to indicate all similarly named ttys.
+Multiple
+.Fl t
+flags may be specified.
+.It Fl w Ar wtmp
+Read connect time data from
+.Ar wtmp
+instead of the default file,
.Pa /var/log/wtmp .
.It Ar users ...
-Display totals for the given individuals
-only.
+Display totals for the given individuals only.
.El
.Pp
If no arguments are given,
-.Nm
-displays the total amount of login time for all active accounts on the
-system.
+.Nm ac
+displays the total connect time for all
+accounts with login sessions recorded in
+.Pa wtmp .
.Pp
The default
.Pa wtmp
-file is an infinitely increasing file
-unless frequently truncated. This is normally
-done by the daily daemon scripts scheduled by
-.Xr cron 8
+file will increase without bound unless it is truncated.
+It is normally truncated by the daily scripts run
+by
+.Xr cron 8 ,
which rename and rotate the
.Pa wtmp
-files before truncating them (and keeping about a weeks worth on hand).
-No login times are collected however, if the file does not exist.
+files, keeping a week's worth of data on
+hand. No login or connect time accounting is performed if
+.Pa /var/log/wtmp
+does not exist.
+.Pp
+For example,
+.Bd -literal -offset
+ac -p -t "ttyd*" > modems
+ac -p -t "!ttyd*" > other
+.Ed
+.Pp
+allows times recorded in
+.Pa modems
+to be charged out at a different rate than
+.Pa other .
+.Pp
+The
+.Nm ac
+utility exits 0 on success, and >0 if a fatal error occurs.
.Sh FILES
.Bl -tag -width /var/log/wtmp.[0-7] -compact
.It Pa /var/log/wtmp
+connect time accounting file
.It Pa /var/log/wtmp.[0-7]
rotated files
.El
@@ -100,8 +132,24 @@ rotated files
.Xr init 8 ,
.Xr sa 8 ,
.Xr login 1 ,
-.Xr utmp 5 .
-.Sh HISTORY
-A
-.Nm
-command appeared in Version 6 AT&T UNIX.
+.Xr utmp
+.\" .Sh NOTES
+.\" If COMPAT_SUNOS is defined
+.\" .Nm ac
+.\" ignores the fact that entries with ut_host of ":0.0" are not real
+.\" login sessions. Normally such entries are ignored except in the case
+.\" of a user being logged in when the
+.\" .Pa wtmp
+.\" file was rotated, in which case a login with ut_host of ":0.0" may
+.\" appear without any preceeding console logins.
+.\" If no one is logged in on the console, the user is deemed to have
+.\" logged in on at the earliest time stamp found in
+.\" .Pa wtmp .
+.\" Use of
+.\" .Pa console
+.\" allows
+.\" .Nm ac
+.\" to identify and correcty process a logout for the user. The default
+.\" value for
+.\" .Pa console
+.\" is usually correct at compile time.
diff --git a/usr.sbin/ac/ac.c b/usr.sbin/ac/ac.c
new file mode 100644
index 0000000..2d68315
--- /dev/null
+++ b/usr.sbin/ac/ac.c
@@ -0,0 +1,557 @@
+/*
+ * Copyright (c) 1994 Christopher G. Demetriou.
+ * @(#)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.
+ */
+
+#ifndef lint
+static char rcsid[] = "$Id: ac.c,v 1.1.1.1 1994/05/18 08:00:45 csgr Exp $";
+#endif
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/time.h>
+#include <err.h>
+#include <errno.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <utmp.h>
+#include <unistd.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
+ */
+#ifdef CONSOLE_TTY
+static char *Console = CONSOLE_TTY;
+#endif
+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;
+
+#define NEW(type) (type *)malloc(sizeof (type))
+
+#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
+
+int main __P((int, char **));
+int ac __P((FILE *));
+struct tty_list *add_tty __P((char *));
+int do_tty __P((char *));
+FILE *file __P((char *));
+struct utmp_list *log_in __P((struct utmp_list *, struct utmp *));
+struct utmp_list *log_out __P((struct utmp_list *, struct utmp *));
+int on_console __P((struct utmp_list *));
+void show __P((char *, time_t));
+void show_today __P((struct user_list *, struct utmp_list *,
+ time_t));
+void show_users __P((struct user_list *));
+struct user_list *update_user __P((struct user_list *, char *, time_t));
+void usage __P((void));
+
+/*
+ * open wtmp or die
+ */
+FILE *
+file(name)
+ char *name;
+{
+ FILE *fp;
+
+ 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;
+}
+
+struct tty_list *
+add_tty(name)
+ char *name;
+{
+ struct tty_list *tp;
+ register 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)strncpy(tp->name, name, sizeof (tp->name) - 1);
+ tp->name[sizeof (tp->name) - 1] = '\0';
+ 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?
+ */
+int
+do_tty(name)
+ 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;
+}
+
+#ifdef CONSOLE_TTY
+/*
+ * is someone logged in on Console?
+ */
+int
+on_console(head)
+ struct utmp_list *head;
+{
+ struct utmp_list *up;
+
+ for (up = head; up; up = up->next) {
+ if (strncmp(up->usr.ut_line, Console,
+ sizeof (up->usr.ut_line)) == 0)
+ return 1;
+ }
+ return 0;
+}
+#endif
+
+/*
+ * update user's login time
+ */
+struct user_list *
+update_user(head, name, secs)
+ 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)) == 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)strncpy(up->name, name, sizeof (up->name) - 1);
+ up->name[sizeof (up->name) - 1] = '\0'; /* paranoid! */
+ up->secs = secs;
+ Total += secs;
+ return up;
+}
+
+int
+main(argc, argv)
+ int argc;
+ char **argv;
+{
+ FILE *fp;
+ int c;
+
+ fp = NULL;
+ while ((c = getopt(argc, argv, "Dc:dpt:w:")) != EOF) {
+ switch (c) {
+#ifdef DEBUG
+ case 'D':
+ Debug++;
+ break;
+#endif
+ case 'c':
+#ifdef CONSOLE_TTY
+ Console = optarg;
+#else
+ usage(); /* XXX */
+#endif
+ break;
+ 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();
+ break;
+ }
+ }
+ 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
+ */
+void
+show(name, secs)
+ char *name;
+ time_t secs;
+{
+ (void)printf("\t%-*s %8.2f\n", UT_NAMESIZE, name,
+ ((double)secs / 3600));
+}
+
+void
+show_users(list)
+ 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
+ */
+void
+show_today(users, logins, secs)
+ 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.
+ */
+struct utmp_list *
+log_out(head, up)
+ 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(head, up)
+ struct utmp_list *head;
+ struct utmp *up;
+{
+ struct utmp_list *lp;
+
+ /*
+ * this could be a login. if we're not dealing with
+ * the console name, say it is.
+ *
+ * If we are, and if ut_host==":0.0" we know that it
+ * isn't a real login. _But_ if we have not yet recorded
+ * someone being logged in on Console - due to the wtmp
+ * file starting after they logged in, we'll pretend they
+ * logged in, at the start of the wtmp file.
+ */
+
+#ifdef CONSOLE_TTY
+ if (up->ut_host[0] == ':') {
+ /*
+ * SunOS 4.0.2 does not treat ":0.0" as special but we
+ * do.
+ */
+ if (on_console(head))
+ return head;
+ /*
+ * ok, no recorded login, so they were here when wtmp
+ * started! Adjust ut_time!
+ */
+ up->ut_time = FirstTime;
+ /*
+ * this allows us to pick the right logout
+ */
+ (void)strncpy(up->ut_line, Console, sizeof (up->ut_line) - 1);
+ up->ut_line[sizeof (up->ut_line) - 1] = '\0'; /* paranoid! */
+ }
+#endif
+ /*
+ * 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;
+}
+
+int
+ac(fp)
+ FILE *fp;
+{
+ struct utmp_list *lp, *head = NULL;
+ struct utmp usr;
+ struct tm *ltm;
+ time_t secs;
+ 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
+ */
+ if (*usr.ut_name) {
+ if (strncmp(usr.ut_line, "tty", 3) != 0 ||
+ strchr("pqrstuvwxy", usr.ut_line[3]) == 0 ||
+ *usr.ut_host != '\0')
+ head = log_in(head, &usr);
+ } 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;
+}
+
+void
+usage()
+{
+ (void)fprintf(stderr,
+#ifdef CONSOLE_TTY
+ "ac [-dp] [-c console] [-t tty] [-w wtmp] [users ...]\n");
+#else
+ "ac [-dp] [-t tty] [-w wtmp] [users ...]\n");
+#endif
+ exit(1);
+}
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