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authorrgrimes <rgrimes@FreeBSD.org>1994-05-27 12:33:43 +0000
committerrgrimes <rgrimes@FreeBSD.org>1994-05-27 12:33:43 +0000
commitf9ab90d9d6d02989a075d0f0074496d5b1045e4b (patch)
treeadd7e996bac5289cdc55e6935750c352505560a9 /usr.bin/last
parentbe22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (diff)
downloadFreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.zip
FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.tar.gz
BSD 4.4 Lite Usr.bin Sources
Diffstat (limited to 'usr.bin/last')
-rw-r--r--usr.bin/last/Makefile5
-rw-r--r--usr.bin/last/last.1123
-rw-r--r--usr.bin/last/last.c420
3 files changed, 548 insertions, 0 deletions
diff --git a/usr.bin/last/Makefile b/usr.bin/last/Makefile
new file mode 100644
index 0000000..edbb66b
--- /dev/null
+++ b/usr.bin/last/Makefile
@@ -0,0 +1,5 @@
+# @(#)Makefile 8.1 (Berkeley) 6/6/93
+
+PROG= last
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/last/last.1 b/usr.bin/last/last.1
new file mode 100644
index 0000000..27a214d
--- /dev/null
+++ b/usr.bin/last/last.1
@@ -0,0 +1,123 @@
+.\" Copyright (c) 1980, 1990, 1993
+.\" The Regents of the University of California. 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 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 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.
+.\"
+.\" @(#)last.1 8.1 (Berkeley) 6/6/93
+.\"
+.Dd June 6, 1993
+.Dt LAST 1
+.Os BSD 4
+.Sh NAME
+.Nm last
+.Nd indicate last logins of users and ttys
+.Sh SYNOPSIS
+.Nm last
+.Op Fl Ns Ar n
+.Op Fl f Ar file
+.Op Fl h Ar host
+.Op Fl t Ar tty
+.Op user ...
+.Sh DESCRIPTION
+.Nm Last
+will list the sessions of specified
+.Ar users ,
+.Ar ttys ,
+and
+.Ar hosts ,
+in reverse time order. Each line of output contains
+the user name, the tty from which the session was conducted, any
+hostname, the start and stop times for the session, and the duration
+of the session. If the session is still continuing or was cut short by
+a crash or shutdown,
+.Nm last
+will so indicate.
+.Pp
+.Bl -tag -width indent-two
+.It Fl f Ar file
+.Nm Last
+reads the file
+.Ar file
+instead of the default,
+.Pa /var/log/wtmp .
+.It Fl Ar n
+Limits the report to
+.Ar n
+lines.
+.It Fl t Ar tty
+Specify the
+.Ar tty .
+Tty names may be given fully or abbreviated, for example,
+.Dq Li "last -t 03"
+is
+equivalent to
+.Dq Li "last -t tty03" .
+.It Fl h Ar host
+.Ar Host
+names may be names or internet numbers.
+.El
+.Pp
+If
+multiple arguments are given, the information which applies to any of the
+arguments is printed, e.g.,
+.Dq Li "last root -t console"
+would list all of
+.Dq Li root Ns 's
+sessions as well as all sessions on the console terminal. If no
+users, hostnames or terminals are specified,
+.Nm last
+prints a record of
+all logins and logouts.
+.Pp
+The pseudo-user
+.Ar reboot
+logs in at reboots of the system, thus
+.Dq Li last reboot
+will give an indication of mean time between reboot.
+.Pp
+If
+.Nm last
+is interrupted, it indicates to what date the search has
+progressed. If interrupted with a quit signal
+.Nm last
+indicates how
+far the search has progressed and then continues.
+.Sh FILES
+.Bl -tag -width /var/log/wtmp -compact
+.It Pa /var/log/wtmp
+login data base
+.El
+.Sh SEE ALSO
+.Xr lastcomm 1 ,
+.Xr utmp 5 ,
+.Xr ac 8
+.Sh HISTORY
+.Nm Last
+appeared in
+.Bx 3.0 .
diff --git a/usr.bin/last/last.c b/usr.bin/last/last.c
new file mode 100644
index 0000000..662a663
--- /dev/null
+++ b/usr.bin/last/last.c
@@ -0,0 +1,420 @@
+/*
+ * Copyright (c) 1987, 1993, 1994
+ * The Regents of the University of California. 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 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 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1987, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)last.c 8.2 (Berkeley) 4/2/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <tzfile.h>
+#include <unistd.h>
+#include <utmp.h>
+
+#define NO 0 /* false/no */
+#define YES 1 /* true/yes */
+
+static struct utmp buf[1024]; /* utmp read buffer */
+
+typedef struct arg {
+ char *name; /* argument */
+#define HOST_TYPE -2
+#define TTY_TYPE -3
+#define USER_TYPE -4
+ int type; /* type of arg */
+ struct arg *next; /* linked list pointer */
+} ARG;
+ARG *arglist; /* head of linked list */
+
+typedef struct ttytab {
+ long logout; /* log out time */
+ char tty[UT_LINESIZE + 1]; /* terminal name */
+ struct ttytab *next; /* linked list pointer */
+} TTY;
+TTY *ttylist; /* head of linked list */
+
+static long currentout, /* current logout value */
+ maxrec; /* records to display */
+static char *file = _PATH_WTMP; /* wtmp file */
+
+void addarg __P((int, char *));
+TTY *addtty __P((char *));
+void hostconv __P((char *));
+void onintr __P((int));
+char *ttyconv __P((char *));
+int want __P((struct utmp *, int));
+void wtmp __P((void));
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ extern int optind;
+ extern char *optarg;
+ int ch;
+ char *p;
+
+ maxrec = -1;
+ while ((ch = getopt(argc, argv, "0123456789f:h:t:")) != EOF)
+ switch (ch) {
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ /*
+ * kludge: last was originally designed to take
+ * a number after a dash.
+ */
+ if (maxrec == -1) {
+ p = argv[optind - 1];
+ if (p[0] == '-' && p[1] == ch && !p[2])
+ maxrec = atol(++p);
+ else
+ maxrec = atol(argv[optind] + 1);
+ if (!maxrec)
+ exit(0);
+ }
+ break;
+ case 'f':
+ file = optarg;
+ break;
+ case 'h':
+ hostconv(optarg);
+ addarg(HOST_TYPE, optarg);
+ break;
+ case 't':
+ addarg(TTY_TYPE, ttyconv(optarg));
+ break;
+ case '?':
+ default:
+ (void)fprintf(stderr,
+ "usage: last [-#] [-f file] [-t tty] [-h hostname] [user ...]\n");
+ exit(1);
+ }
+
+ if (argc) {
+ setlinebuf(stdout);
+ for (argv += optind; *argv; ++argv) {
+#define COMPATIBILITY
+#ifdef COMPATIBILITY
+ /* code to allow "last p5" to work */
+ addarg(TTY_TYPE, ttyconv(*argv));
+#endif
+ addarg(USER_TYPE, *argv);
+ }
+ }
+ wtmp();
+ exit(0);
+}
+
+/*
+ * wtmp --
+ * read through the wtmp file
+ */
+void
+wtmp()
+{
+ struct utmp *bp; /* current structure */
+ TTY *T; /* tty list entry */
+ struct stat stb; /* stat of file for size */
+ long bl, delta; /* time difference */
+ int bytes, wfd;
+ char *ct, *crmsg;
+
+ if ((wfd = open(file, O_RDONLY, 0)) < 0 || fstat(wfd, &stb) == -1)
+ err(1, "%s", file);
+ bl = (stb.st_size + sizeof(buf) - 1) / sizeof(buf);
+
+ (void)time(&buf[0].ut_time);
+ (void)signal(SIGINT, onintr);
+ (void)signal(SIGQUIT, onintr);
+
+ while (--bl >= 0) {
+ if (lseek(wfd, (off_t)(bl * sizeof(buf)), L_SET) == -1 ||
+ (bytes = read(wfd, buf, sizeof(buf))) == -1)
+ err(1, "%s", file);
+ for (bp = &buf[bytes / sizeof(buf[0]) - 1]; bp >= buf; --bp) {
+ /*
+ * if the terminal line is '~', the machine stopped.
+ * see utmp(5) for more info.
+ */
+ if (bp->ut_line[0] == '~' && !bp->ut_line[1]) {
+ /* everybody just logged out */
+ for (T = ttylist; T; T = T->next)
+ T->logout = -bp->ut_time;
+ currentout = -bp->ut_time;
+ crmsg = strncmp(bp->ut_name, "shutdown",
+ UT_NAMESIZE) ? "crash" : "shutdown";
+ if (want(bp, NO)) {
+ ct = ctime(&bp->ut_time);
+ printf("%-*.*s %-*.*s %-*.*s %10.10s %5.5s \n",
+ UT_NAMESIZE, UT_NAMESIZE,
+ bp->ut_name, UT_LINESIZE,
+ UT_LINESIZE, bp->ut_line,
+ UT_HOSTSIZE, UT_HOSTSIZE,
+ bp->ut_host, ct, ct + 11);
+ if (maxrec != -1 && !--maxrec)
+ return;
+ }
+ continue;
+ }
+ /*
+ * if the line is '{' or '|', date got set; see
+ * utmp(5) for more info.
+ */
+ if ((bp->ut_line[0] == '{' || bp->ut_line[0] == '|')
+ && !bp->ut_line[1]) {
+ if (want(bp, NO)) {
+ ct = ctime(&bp->ut_time);
+ printf("%-*.*s %-*.*s %-*.*s %10.10s %5.5s \n",
+ UT_NAMESIZE, UT_NAMESIZE, bp->ut_name,
+ UT_LINESIZE, UT_LINESIZE, bp->ut_line,
+ UT_HOSTSIZE, UT_HOSTSIZE, bp->ut_host,
+ ct, ct + 11);
+ if (maxrec && !--maxrec)
+ return;
+ }
+ continue;
+ }
+ /* find associated tty */
+ for (T = ttylist;; T = T->next) {
+ if (!T) {
+ /* add new one */
+ T = addtty(bp->ut_line);
+ break;
+ }
+ if (!strncmp(T->tty, bp->ut_line, UT_LINESIZE))
+ break;
+ }
+ if (bp->ut_name[0] && want(bp, YES)) {
+ ct = ctime(&bp->ut_time);
+ printf("%-*.*s %-*.*s %-*.*s %10.10s %5.5s ",
+ UT_NAMESIZE, UT_NAMESIZE, bp->ut_name,
+ UT_LINESIZE, UT_LINESIZE, bp->ut_line,
+ UT_HOSTSIZE, UT_HOSTSIZE, bp->ut_host,
+ ct, ct + 11);
+ if (!T->logout)
+ puts(" still logged in");
+ else {
+ if (T->logout < 0) {
+ T->logout = -T->logout;
+ printf("- %s", crmsg);
+ }
+ else
+ printf("- %5.5s",
+ ctime(&T->logout)+11);
+ delta = T->logout - bp->ut_time;
+ if (delta < SECSPERDAY)
+ printf(" (%5.5s)\n",
+ asctime(gmtime(&delta))+11);
+ else
+ printf(" (%ld+%5.5s)\n",
+ delta / SECSPERDAY,
+ asctime(gmtime(&delta))+11);
+ }
+ if (maxrec != -1 && !--maxrec)
+ return;
+ }
+ T->logout = bp->ut_time;
+ }
+ }
+ ct = ctime(&buf[0].ut_time);
+ printf("\nwtmp begins %10.10s %5.5s \n", ct, ct + 11);
+}
+
+/*
+ * want --
+ * see if want this entry
+ */
+int
+want(bp, check)
+ struct utmp *bp;
+ int check;
+{
+ ARG *step;
+
+ if (check)
+ /*
+ * when uucp and ftp log in over a network, the entry in
+ * the utmp file is the name plus their process id. See
+ * etc/ftpd.c and usr.bin/uucp/uucpd.c for more information.
+ */
+ if (!strncmp(bp->ut_line, "ftp", sizeof("ftp") - 1))
+ bp->ut_line[3] = '\0';
+ else if (!strncmp(bp->ut_line, "uucp", sizeof("uucp") - 1))
+ bp->ut_line[4] = '\0';
+ if (!arglist)
+ return (YES);
+
+ for (step = arglist; step; step = step->next)
+ switch(step->type) {
+ case HOST_TYPE:
+ if (!strncasecmp(step->name, bp->ut_host, UT_HOSTSIZE))
+ return (YES);
+ break;
+ case TTY_TYPE:
+ if (!strncmp(step->name, bp->ut_line, UT_LINESIZE))
+ return (YES);
+ break;
+ case USER_TYPE:
+ if (!strncmp(step->name, bp->ut_name, UT_NAMESIZE))
+ return (YES);
+ break;
+ }
+ return (NO);
+}
+
+/*
+ * addarg --
+ * add an entry to a linked list of arguments
+ */
+void
+addarg(type, arg)
+ int type;
+ char *arg;
+{
+ ARG *cur;
+
+ if (!(cur = (ARG *)malloc((u_int)sizeof(ARG))))
+ err(1, "malloc failure");
+ cur->next = arglist;
+ cur->type = type;
+ cur->name = arg;
+ arglist = cur;
+}
+
+/*
+ * addtty --
+ * add an entry to a linked list of ttys
+ */
+TTY *
+addtty(ttyname)
+ char *ttyname;
+{
+ TTY *cur;
+
+ if (!(cur = (TTY *)malloc((u_int)sizeof(TTY))))
+ err(1, "malloc failure");
+ cur->next = ttylist;
+ cur->logout = currentout;
+ memmove(cur->tty, ttyname, UT_LINESIZE);
+ return (ttylist = cur);
+}
+
+/*
+ * hostconv --
+ * convert the hostname to search pattern; if the supplied host name
+ * has a domain attached that is the same as the current domain, rip
+ * off the domain suffix since that's what login(1) does.
+ */
+void
+hostconv(arg)
+ char *arg;
+{
+ static int first = 1;
+ static char *hostdot, name[MAXHOSTNAMELEN];
+ char *argdot;
+
+ if (!(argdot = strchr(arg, '.')))
+ return;
+ if (first) {
+ first = 0;
+ if (gethostname(name, sizeof(name)))
+ err(1, "gethostname");
+ hostdot = strchr(name, '.');
+ }
+ if (hostdot && !strcasecmp(hostdot, argdot))
+ *argdot = '\0';
+}
+
+/*
+ * ttyconv --
+ * convert tty to correct name.
+ */
+char *
+ttyconv(arg)
+ char *arg;
+{
+ char *mval;
+
+ /*
+ * kludge -- we assume that all tty's end with
+ * a two character suffix.
+ */
+ if (strlen(arg) == 2) {
+ /* either 6 for "ttyxx" or 8 for "console" */
+ if (!(mval = malloc((u_int)8)))
+ err(1, "malloc failure");
+ if (!strcmp(arg, "co"))
+ (void)strcpy(mval, "console");
+ else {
+ (void)strcpy(mval, "tty");
+ (void)strcpy(mval + 3, arg);
+ }
+ return (mval);
+ }
+ if (!strncmp(arg, _PATH_DEV, sizeof(_PATH_DEV) - 1))
+ return (arg + 5);
+ return (arg);
+}
+
+/*
+ * onintr --
+ * on interrupt, we inform the user how far we've gotten
+ */
+void
+onintr(signo)
+ int signo;
+{
+ char *ct;
+
+ ct = ctime(&buf[0].ut_time);
+ printf("\ninterrupted %10.10s %5.5s \n", ct, ct + 11);
+ if (signo == SIGINT)
+ exit(1);
+ (void)fflush(stdout); /* fix required for rsh */
+}
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