1 /* $NetBSD: last.c,v 1.15 2000/06/30 06:19:58 simonb Exp $ */
4 * Copyright (c) 1987, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/cdefs.h>
39 static char sccsid[] = "@(#)last.c 8.2 (Berkeley) 4/2/94";
41 __RCSID("$NetBSD: last.c,v 1.15 2000/06/30 06:19:58 simonb Exp $");
44 #include <sys/param.h>
67 #define UT_HOSTSIZE 16
75 #define NO 0 /* false/no */
76 #define YES 1 /* true/yes */
78 #define TBUFLEN 30 /* length of time string buffer */
79 #define TFMT "%a %b %d %R" /* strftime format string */
80 #define LTFMT "%a %b %d %Y %T" /* strftime long format string */
81 #define TFMTS "%R" /* strftime format string - time only */
82 #define LTFMTS "%T" /* strftime long format string - " */
85 #define FULLTIME 0x1 /* show year, seconds */
86 #define TIMEONLY 0x2 /* show time only, not date */
87 #define GMT 0x4 /* show time at GMT, for offsets only */
92 char *name; /* argument */
96 int type; /* type of arg */
97 struct arg *next; /* linked list pointer */
99 static ARG *arglist; /* head of linked list */
101 typedef struct ttytab {
102 time_t logout; /* log out time */
103 char tty[128]; /* terminal name */
104 struct ttytab *next; /* linked list pointer */
106 static TTY *ttylist; /* head of linked list */
108 static time_t currentout; /* current logout value */
109 static long maxrec; /* records to display */
110 static int fulltime = 0; /* Display seconds? */
112 int main(int, char *[]);
114 static void addarg(int, char *);
115 static TTY *addtty(const char *);
116 static void hostconv(char *);
117 static char *ttyconv(char *);
119 static void wtmpx(const char *, int, int, int);
122 static void wtmp(const char *, int, int, int);
124 static char *fmttime(time_t, int);
125 static void usage(void);
130 (void)fprintf(stderr, "Usage: %s [-#%s] [-f file] [-t tty]"
131 " [-h hostname] [-T] [user ...]\n", getprogname(),
142 main(int argc, char *argv[])
146 const char *file = NULL;
147 int namesize = UT_NAMESIZE;
148 int linesize = UT_LINESIZE;
149 int hostsize = UT_HOSTSIZE;
153 while ((ch = getopt(argc, argv, "0123456789f:h:H:L:N:t:T")) != -1)
155 case '0': case '1': case '2': case '3': case '4':
156 case '5': case '6': case '7': case '8': case '9':
158 * kludge: last was originally designed to take
159 * a number after a dash.
162 p = argv[optind - 1];
163 if (p[0] == '-' && p[1] == ch && !p[2])
166 maxrec = atol(argv[optind] + 1);
176 addarg(HOST_TYPE, optarg);
179 addarg(TTY_TYPE, ttyconv(optarg));
182 namesize = atoi(optarg);
185 linesize = atoi(optarg);
188 hostsize = atoi(optarg);
200 for (argv += optind; *argv; ++argv) {
201 #define COMPATIBILITY
203 /* code to allow "last p5" to work */
204 addarg(TTY_TYPE, ttyconv(*argv));
206 addarg(USER_TYPE, *argv);
210 /* XXX: for now, default to utmp */
212 if (access(_PATH_WTMP, R_OK) == 0)
217 if (access(_PATH_WTMPX, R_OK) == 0)
221 #if defined(SUPPORT_UTMPX) && defined(SUPPORT_UTMP)
222 errx(1, "Cannot access `%s' or `%s'", _PATH_WTMPX,
224 #elif defined(SUPPORT_UTMPX)
225 errx(1, "Cannot access `%s'", _PATH_WTMPX);
226 #elif defined(SUPPORT_UTMP)
227 errx(1, "Cannot access `%s'", _PATH_WTMP);
229 errx(1, "No utmp or utmpx support compiled in.");
232 #if defined(SUPPORT_UTMPX) && defined(SUPPORT_UTMP)
233 if (file[strlen(file) - 1] == 'x')
234 wtmpx(file, namesize, linesize, hostsize);
236 wtmp(file, namesize, linesize, hostsize);
237 #elif defined(SUPPORT_UTMPX)
238 wtmpx(file, namesize, linesize, hostsize);
239 #elif defined(SUPPORT_UTMP)
240 wtmp(file, namesize, linesize, hostsize);
242 errx(1, "Nu utmp or utmpx support compiled in.");
250 * add an entry to a linked list of arguments
253 addarg(int type, char *arg)
257 if (!(cur = (ARG *)malloc((u_int)sizeof(ARG))))
258 err(1, "malloc failure");
267 * add an entry to a linked list of ttys
270 addtty(const char *tty)
274 if (!(cur = (TTY *)malloc((u_int)sizeof(TTY))))
275 err(1, "malloc failure");
277 cur->logout = currentout;
278 memmove(cur->tty, tty, sizeof(cur->tty));
279 return (ttylist = cur);
284 * convert the hostname to search pattern; if the supplied host name
285 * has a domain attached that is the same as the current domain, rip
286 * off the domain suffix since that's what login(1) does.
291 static int first = 1;
292 static char *hostdot, name[MAXHOSTNAMELEN + 1];
295 if (!(argdot = strchr(arg, '.')))
299 if (gethostname(name, sizeof(name)))
300 err(1, "gethostname");
301 name[sizeof(name) - 1] = '\0';
302 hostdot = strchr(name, '.');
304 if (hostdot && !strcasecmp(hostdot, argdot))
310 * convert tty to correct name.
318 * kludge -- we assume that all tty's end with
319 * a two character suffix.
321 if (strlen(arg) == 2) {
322 /* either 6 for "ttyxx" or 8 for "console" */
323 if (!(mval = malloc((u_int)8)))
324 err(1, "malloc failure");
325 if (!strcmp(arg, "co"))
326 (void)strcpy(mval, "console");
328 (void)strcpy(mval, "tty");
329 (void)strcpy(mval + 3, arg);
333 if (!strncmp(arg, _PATH_DEV, sizeof(_PATH_DEV) - 1))
340 * return pointer to (static) formatted time string.
343 fmttime(time_t t, int flags)
346 static char tbuf[TBUFLEN];
348 tm = (flags & GMT) ? gmtime(&t) : localtime(&t);
349 strftime(tbuf, sizeof(tbuf),
351 ? (flags & FULLTIME ? LTFMTS : TFMTS)
352 : (flags & FULLTIME ? LTFMT : TFMT),
359 #define NAMESIZE UT_NAMESIZE
360 #define LINESIZE UT_LINESIZE
361 #define HOSTSIZE UT_HOSTSIZE
362 #define ut_timefld ut_time
378 #define onintr onintrx
379 #define TYPE(a) (a)->ut_type
380 #define NAMESIZE UTX_USERSIZE
381 #define LINESIZE UTX_LINESIZE
382 #define HOSTSIZE UTX_HOSTSIZE
383 #define ut_timefld ut_xtime