1 /* @(#)last.c 8.2 (Berkeley) 4/2/94 */
2 /* $NetBSD: last.c,v 1.15 2000/06/30 06:19:58 simonb Exp $ */
5 * Copyright (c) 1987, 1993, 1994
6 * The Regents of the University of California. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include <sys/param.h>
56 #define UT_HOSTSIZE 16
64 #define NO 0 /* false/no */
65 #define YES 1 /* true/yes */
67 #define TBUFLEN 30 /* length of time string buffer */
68 #define TFMT "%a %b %d %R" /* strftime format string */
69 #define LTFMT "%a %b %d %Y %T" /* strftime long format string */
70 #define TFMTS "%R" /* strftime format string - time only */
71 #define LTFMTS "%T" /* strftime long format string - " */
74 #define FULLTIME 0x1 /* show year, seconds */
75 #define TIMEONLY 0x2 /* show time only, not date */
76 #define GMT 0x4 /* show time at GMT, for offsets only */
81 char *name; /* argument */
85 int type; /* type of arg */
86 struct arg *next; /* linked list pointer */
88 static ARG *arglist; /* head of linked list */
90 typedef struct ttytab {
91 time_t logout; /* log out time */
92 char tty[128]; /* terminal name */
93 struct ttytab *next; /* linked list pointer */
95 static TTY *ttylist; /* head of linked list */
97 static time_t currentout; /* current logout value */
98 static long maxrec; /* records to display */
99 static int fulltime = 0; /* Display seconds? */
101 static void addarg(int, char *);
102 static TTY *addtty(const char *);
103 static void hostconv(char *);
104 static char *ttyconv(char *);
106 static void wtmpx(const char *, int, int, int);
109 static void wtmp(const char *, int, int, int);
111 static char *fmttime(time_t, int);
112 static void usage(void);
117 (void)fprintf(stderr, "Usage: %s [-#%s] [-f file] [-t tty]"
118 " [-h hostname] [-T] [user ...]\n", getprogname(),
129 main(int argc, char *argv[])
133 const char *file = NULL;
134 int namesize = UT_NAMESIZE;
135 int linesize = UT_LINESIZE;
136 int hostsize = UT_HOSTSIZE;
140 while ((ch = getopt(argc, argv, "0123456789f:h:H:L:N:t:T")) != -1)
142 case '0': case '1': case '2': case '3': case '4':
143 case '5': case '6': case '7': case '8': case '9':
145 * kludge: last was originally designed to take
146 * a number after a dash.
149 p = argv[optind - 1];
150 if (p[0] == '-' && p[1] == ch && !p[2])
153 maxrec = atol(argv[optind] + 1);
163 addarg(HOST_TYPE, optarg);
166 addarg(TTY_TYPE, ttyconv(optarg));
169 namesize = atoi(optarg);
172 linesize = atoi(optarg);
175 hostsize = atoi(optarg);
187 for (argv += optind; *argv; ++argv) {
188 #define COMPATIBILITY
190 /* code to allow "last p5" to work */
191 addarg(TTY_TYPE, ttyconv(*argv));
193 addarg(USER_TYPE, *argv);
197 /* XXX: for now, default to utmp */
199 if (access(_PATH_WTMP, R_OK) == 0)
204 if (access(_PATH_WTMPX, R_OK) == 0)
208 #if defined(SUPPORT_UTMPX) && defined(SUPPORT_UTMP)
209 errx(1, "Cannot access `%s' or `%s'", _PATH_WTMPX,
211 #elif defined(SUPPORT_UTMPX)
212 errx(1, "Cannot access `%s'", _PATH_WTMPX);
213 #elif defined(SUPPORT_UTMP)
214 errx(1, "Cannot access `%s'", _PATH_WTMP);
216 errx(1, "No utmp or utmpx support compiled in.");
219 #if defined(SUPPORT_UTMPX) && defined(SUPPORT_UTMP)
220 if (file[strlen(file) - 1] == 'x')
221 wtmpx(file, namesize, linesize, hostsize);
223 wtmp(file, namesize, linesize, hostsize);
224 #elif defined(SUPPORT_UTMPX)
225 wtmpx(file, namesize, linesize, hostsize);
226 #elif defined(SUPPORT_UTMP)
227 wtmp(file, namesize, linesize, hostsize);
229 errx(1, "Nu utmp or utmpx support compiled in.");
237 * add an entry to a linked list of arguments
240 addarg(int type, char *arg)
244 if (!(cur = (ARG *)malloc((u_int)sizeof(ARG))))
245 err(1, "malloc failure");
254 * add an entry to a linked list of ttys
257 addtty(const char *tty)
261 if (!(cur = (TTY *)malloc((u_int)sizeof(TTY))))
262 err(1, "malloc failure");
264 cur->logout = currentout;
265 memmove(cur->tty, tty, sizeof(cur->tty));
266 return (ttylist = cur);
271 * convert the hostname to search pattern; if the supplied host name
272 * has a domain attached that is the same as the current domain, rip
273 * off the domain suffix since that's what login(1) does.
278 static int first = 1;
279 static char *hostdot, name[MAXHOSTNAMELEN + 1];
282 if (!(argdot = strchr(arg, '.')))
286 if (gethostname(name, sizeof(name)))
287 err(1, "gethostname");
288 name[sizeof(name) - 1] = '\0';
289 hostdot = strchr(name, '.');
291 if (hostdot && !strcasecmp(hostdot, argdot))
297 * convert tty to correct name.
305 * kludge -- we assume that all tty's end with
306 * a two character suffix.
308 if (strlen(arg) == 2) {
309 /* either 6 for "ttyxx" or 8 for "console" */
310 if (!(mval = malloc((u_int)8)))
311 err(1, "malloc failure");
312 if (!strcmp(arg, "co"))
313 (void)strcpy(mval, "console");
315 (void)strcpy(mval, "tty");
316 (void)strcpy(mval + 3, arg);
320 if (!strncmp(arg, _PATH_DEV, sizeof(_PATH_DEV) - 1))
327 * return pointer to (static) formatted time string.
330 fmttime(time_t t, int flags)
333 static char tbuf[TBUFLEN];
335 tm = (flags & GMT) ? gmtime(&t) : localtime(&t);
336 strftime(tbuf, sizeof(tbuf),
338 ? (flags & FULLTIME ? LTFMTS : TFMTS)
339 : (flags & FULLTIME ? LTFMT : TFMT),
346 #define NAMESIZE UT_NAMESIZE
347 #define LINESIZE UT_LINESIZE
348 #define HOSTSIZE UT_HOSTSIZE
349 #define ut_timefld ut_time
365 #define onintr onintrx
366 #define TYPE(a) (a)->ut_type
367 #define NAMESIZE UTX_USERSIZE
368 #define LINESIZE UTX_LINESIZE
369 #define HOSTSIZE UTX_HOSTSIZE
370 #define ut_timefld ut_xtime