diff options
Diffstat (limited to 'usr.bin/last')
| -rw-r--r-- | usr.bin/last/Makefile | 6 | ||||
| -rw-r--r-- | usr.bin/last/last.1 | 125 | ||||
| -rw-r--r-- | usr.bin/last/last.c | 425 |
3 files changed, 556 insertions, 0 deletions
diff --git a/usr.bin/last/Makefile b/usr.bin/last/Makefile new file mode 100644 index 00000000000..4268e2549d3 --- /dev/null +++ b/usr.bin/last/Makefile @@ -0,0 +1,6 @@ +# $NetBSD: Makefile,v 1.3 1994/12/21 22:41:22 jtc Exp $ +# @(#)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 00000000000..5cbfd92cd07 --- /dev/null +++ b/usr.bin/last/last.1 @@ -0,0 +1,125 @@ +.\" $NetBSD: last.1,v 1.3 1994/12/21 22:41:23 jtc Exp $ +.\" +.\" 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 00000000000..e517323d673 --- /dev/null +++ b/usr.bin/last/last.c @@ -0,0 +1,425 @@ +/* $NetBSD: last.c,v 1.6 1994/12/24 16:49:02 cgd Exp $ */ + +/* + * 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 +#if 0 +static char sccsid[] = "@(#)last.c 8.2 (Berkeley) 4/2/94"; +#endif +static char rcsid[] = "$NetBSD: last.c,v 1.6 1994/12/24 16:49:02 cgd Exp $"; +#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 { + time_t 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 time_t currentout; /* current logout value */ +static long 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 */ + time_t 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 */ +} |