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D16922.1794700177.diff
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Index: usr.bin/last/Makefile
===================================================================
--- usr.bin/last/Makefile
+++ usr.bin/last/Makefile
@@ -2,6 +2,7 @@
# $FreeBSD$
PROG= last
+LIBADD= xo
NO_WFORMAT=
Index: usr.bin/last/last.1
===================================================================
--- usr.bin/last/last.1
+++ usr.bin/last/last.1
@@ -28,7 +28,7 @@
.\" @(#)last.1 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$
.\"
-.Dd June 1, 2018
+.Dd August 27, 2018
.Dt LAST 1
.Os
.Sh NAME
@@ -36,6 +36,7 @@
.Nd indicate last logins of users and ttys
.Sh SYNOPSIS
.Nm
+.Op Fl -libxo
.Op Fl swy
.Oo
.Fl d
@@ -72,6 +73,13 @@
.Pp
The following options are available:
.Bl -tag -width indent-two
+.It Fl -libxo
+Generate output via
+.Xr libxo 3
+in a selection of different human and machine readable formats.
+See
+.Xr xo_parse_args 3
+for details on command line arguments.
.It Fl d Ar date
Specify the snapshot date and time.
All users logged in at the snapshot date and time will
@@ -201,6 +209,8 @@
.Xr getutxent 3 ,
.Xr ac 8 ,
.Xr lastlogin 8
+.Xr libxo 3 ,
+.Xr xo_parse_args 3
.Sh HISTORY
.Nm
utility first appeared in
@@ -211,6 +221,10 @@
.An Howard P. Katseff ;
.An Keith Bostic
rewrote it in 1986/87 to add functionality and to improve code quality.
+.An Philip Paeps
+added
+.Xr libxo 3
+support in August 2018.
.Sh BUGS
If a login shell should terminate abnormally for some reason, it is likely
that a logout record will not be written to the
Index: usr.bin/last/last.c
===================================================================
--- usr.bin/last/last.c
+++ usr.bin/last/last.c
@@ -3,6 +3,7 @@
*
* Copyright (c) 1987, 1993, 1994
* The Regents of the University of California. All rights reserved.
+ * Copyright (c) 2018 Philip Paeps
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -62,6 +63,8 @@
#include <unistd.h>
#include <utmpx.h>
+#include <libxo/xo.h>
+
#define NO 0 /* false/no */
#define YES 1 /* true/yes */
#define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
@@ -112,9 +115,10 @@
static void
usage(void)
{
- (void)fprintf(stderr,
+ xo_error(
"usage: last [-swy] [-d [[CC]YY][MMDD]hhmm[.SS]] [-f file] [-h host]\n"
" [-n maxrec] [-t tty] [user ...]\n");
+ xo_finish();
exit(1);
}
@@ -127,6 +131,10 @@
(void) setlocale(LC_TIME, "");
d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
+ argc = xo_parse_args(argc, argv);
+ if (argc < 0)
+ exit(1);
+
maxrec = -1;
snaptime = 0;
while ((ch = getopt(argc, argv, "0123456789d:f:h:n:st:wy")) != -1)
@@ -142,8 +150,10 @@
if (p == NULL)
p = strchr(argv[optind], ch);
maxrec = atol(p);
- if (!maxrec)
+ if (!maxrec) {
+ xo_finish();
exit(0);
+ }
}
break;
case 'd':
@@ -161,7 +171,7 @@
maxrec = strtol(optarg, &p, 10);
if (p == optarg || *p != '\0' || errno != 0 ||
maxrec <= 0)
- errx(1, "%s: bad line count", optarg);
+ xo_errx(1, "%s: bad line count", optarg);
break;
case 's':
sflag++; /* Show delta as seconds */
@@ -181,17 +191,17 @@
}
if (caph_limit_stdio() < 0)
- err(1, "can't limit stdio rights");
+ xo_err(1, "can't limit stdio rights");
caph_cache_catpages();
caph_cache_tzdata();
/* Cache UTX database. */
if (setutxdb(UTXDB_LOG, file) != 0)
- err(1, "%s", file != NULL ? file : "(default utx db)");
+ xo_err(1, "%s", file != NULL ? file : "(default utx db)");
if (caph_enter() < 0)
- err(1, "cap_enter");
+ xo_err(1, "cap_enter");
if (sflag && width == 8) usage();
@@ -209,6 +219,7 @@
}
}
wtmp();
+ xo_finish();
exit(0);
}
@@ -229,12 +240,14 @@
SLIST_INIT(&idlist);
(void)time(&t);
+ xo_open_container("last-information");
+
/* Load the last entries from the file. */
while ((ut = getutxent()) != NULL) {
if (amount % 128 == 0) {
buf = realloc(buf, (amount + 128) * sizeof *ut);
if (buf == NULL)
- err(1, "realloc");
+ xo_err(1, "realloc");
}
memcpy(&buf[amount++], ut, sizeof *ut);
if (t > ut->ut_tv.tv_sec)
@@ -243,12 +256,17 @@
endutxent();
/* Display them in reverse order. */
+ xo_open_list("last");
while (amount > 0)
doentry(&buf[--amount]);
+ xo_close_list("last");
free(buf);
tm = localtime(&t);
(void) strftime(ct, sizeof(ct), "%+", tm);
- printf("\n%s begins %s\n", ((file == NULL) ? "utx.log" : file), ct);
+ xo_emit("\n{:utxdb/%s}", (file == NULL) ? "utx.log" : file);
+ xo_attr("seconds", "%lu", (unsigned long) t);
+ xo_emit(" begins {:begins/%s}\n", ct);
+ xo_close_container("last-information");
}
/*
@@ -275,8 +293,10 @@
* shutdown/reboot appears while we we are tracking the
* active range
*/
- if (snaptime && snapfound)
+ if (snaptime && snapfound) {
+ xo_finish();
exit(0);
+ }
/*
* don't print shutdown/reboot entries unless flagged for
*/
@@ -303,7 +323,7 @@
/* add new one */
tt = malloc(sizeof(struct idtab));
if (tt == NULL)
- errx(1, "malloc failure");
+ xo_errx(1, "malloc failure");
tt->logout = currentout;
memcpy(tt->id, bp->ut_id, sizeof bp->ut_id);
SLIST_INSERT_HEAD(&idlist, tt, list);
@@ -337,8 +357,11 @@
time_t delta; /* time difference */
time_t t;
- if (maxrec != -1 && !maxrec--)
+ if (maxrec != -1 && !maxrec--) {
+ xo_finish();
exit(0);
+ }
+ xo_open_instance("last");
t = bp->ut_tv.tv_sec;
tm = localtime(&t);
(void) strftime(ct, sizeof(ct), d_first ?
@@ -346,48 +369,55 @@
(yflag ? "%a %b %e %Y %R" : "%a %b %e %R"), tm);
switch (bp->ut_type) {
case BOOT_TIME:
- printf("%-42s", "boot time");
+ xo_emit("{:user/%-42s/%s}", "boot time");
break;
case SHUTDOWN_TIME:
- printf("%-42s", "shutdown time");
+ xo_emit("{:user/%-42s/%s}", "shutdown time");
break;
case OLD_TIME:
- printf("%-42s", "old time");
+ xo_emit("{:user/%-42s/%s}", "old time");
break;
case NEW_TIME:
- printf("%-42s", "new time");
+ xo_emit("{:user/%-42s/%s}", "new time");
break;
case USER_PROCESS:
- printf("%-10s %-8s %-22.22s",
+ xo_emit("{:user/%-10s/%s} {:tty/%-8s/%s} {:from/%-22.22s/%s}",
bp->ut_user, bp->ut_line, bp->ut_host);
break;
}
- printf(" %s%c", ct, tt == NULL ? '\n' : ' ');
+ xo_attr("seconds", "%lu", (unsigned long)t);
+ xo_emit(" {:login-time/%s%c/%s}", ct, tt == NULL ? '\n' : ' ');
if (tt == NULL)
- return;
+ goto end;
if (!tt->logout) {
- puts(" still logged in");
- return;
+ xo_emit(" {:logout-time/still logged in}\n");
+ goto end;
}
if (tt->logout < 0) {
tt->logout = -tt->logout;
- printf("- %s", crmsg);
+ xo_emit("- {:logout-reason/%s}", crmsg);
} else {
tm = localtime(&tt->logout);
(void) strftime(ct, sizeof(ct), "%R", tm);
- printf("- %s", ct);
+ xo_attr("seconds", "%lu", (unsigned long)tt->logout);
+ xo_emit("- {:logout-time/%s}", ct);
}
delta = tt->logout - bp->ut_tv.tv_sec;
+ xo_attr("seconds", "%ld", (long)delta);
if (sflag) {
- printf(" (%8ld)\n", (long)delta);
+ xo_emit(" ({:session-length/%8ld})\n", (long)delta);
} else {
tm = gmtime(&delta);
(void) strftime(ct, sizeof(ct), width >= 8 ? "%T" : "%R", tm);
if (delta < 86400)
- printf(" (%s)\n", ct);
+ xo_emit(" ({:session-length/%s})\n", ct);
else
- printf(" (%ld+%s)\n", (long)delta / 86400, ct);
+ xo_emit(" ({:session-length/%ld+%s})\n",
+ (long)delta / 86400, ct);
}
+
+end:
+ xo_close_instance("last");
}
/*
@@ -438,7 +468,7 @@
ARG *cur;
if ((cur = malloc(sizeof(ARG))) == NULL)
- errx(1, "malloc failure");
+ xo_errx(1, "malloc failure");
cur->next = arglist;
cur->type = type;
cur->name = arg;
@@ -463,7 +493,7 @@
if (first) {
first = 0;
if (gethostname(name, sizeof(name)))
- err(1, "gethostname");
+ xo_err(1, "gethostname");
hostdot = strchr(name, '.');
}
if (hostdot && !strcasecmp(hostdot, argdot))
@@ -486,7 +516,7 @@
if (strlen(arg) == 2) {
/* either 6 for "ttyxx" or 8 for "console" */
if ((mval = malloc(8)) == NULL)
- errx(1, "malloc failure");
+ xo_errx(1, "malloc failure");
if (!strcmp(arg, "co"))
(void)strcpy(mval, "console");
else {
@@ -516,9 +546,9 @@
/* Start with the current time. */
if (time(&timet) < 0)
- err(1, "time");
+ xo_err(1, "time");
if ((t = localtime(&timet)) == NULL)
- err(1, "localtime");
+ xo_err(1, "localtime");
/* [[CC]YY]MMDDhhmm[.SS] */
if ((p = strchr(arg, '.')) == NULL)
@@ -567,7 +597,7 @@
t->tm_isdst = -1; /* Figure out DST. */
timet = mktime(t);
if (timet == -1)
-terr: errx(1,
+terr: xo_errx(1,
"out of range or illegal time specification: [[CC]YY]MMDDhhmm[.SS]");
return timet;
}

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