+++ /dev/null
-/*
- * Berkeley last for Linux. Currently maintained by poe@daimi.aau.dk at
- * ftp://ftp.daimi.aau.dk/pub/linux/poe/admutil*
- *
- * Copyright (c) 1987 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- /* 1999-02-22 Arkadiusz Miśkiewicz <misiek@pld.ORG.PL>
- * - added Native Language Support
- */
-
- /* 2001-02-14 Marek Zelem <marek@fornax.sk>
- * - using mmap() on Linux - great speed improvement
- */
-
-/*
- * This command is deprecated. The utility is in maintenance mode,
- * meaning we keep them in source tree for backward compatibility
- * only. Do not waste time making this command better, unless the
- * fix is about security or other very critical issue.
- *
- * See Documentation/deprecated.txt for more information.
- */
-
-/*
- * last
- */
-#include <sys/param.h>
-#include <sys/stat.h>
-#include <sys/file.h>
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <signal.h>
-#include <string.h>
-#include <time.h>
-#include <utmp.h>
-#include <stdio.h>
-#include <getopt.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include "closestream.h"
-#include "pathnames.h"
-#include "nls.h"
-#include "xalloc.h"
-#include "c.h"
-
-#define SECDAY (24*60*60) /* seconds in a day */
-#define NO 0 /* false/no */
-#define YES 1 /* true/yes */
-
-static struct utmp utmpbuf;
-
-#define HMAX (int)sizeof(utmpbuf.ut_host) /* size of utmp host field */
-#define LMAX (int)sizeof(utmpbuf.ut_line) /* size of utmp tty field */
-#define NMAX (int)sizeof(utmpbuf.ut_name) /* size of utmp name field */
-
-/* maximum sizes used for printing */
-/* probably we want a two-pass version that computes the right length */
-#define P_HMAX min(HMAX, 16)
-#define P_LMAX min(LMAX, 8)
-#define P_NMAX min(NMAX, 16)
-
-typedef struct arg {
- char *name; /* argument */
-#define HOST_TYPE -2
-#define TTY_TYPE -3
-#define USER_TYPE -4
-#define INET_TYPE -5
- 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[LMAX + 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 */
-
-static int doyear = 0; /* output year in dates */
-static int dolong = 0; /* print also ip-addr */
-
-static void wtmp(void);
-static void addarg(int, char *);
-static void hostconv(char *);
-static void onintr(int);
-static int want(struct utmp *, int);
-TTY *addtty(char *);
-static char *ttyconv(char *);
-
-int
-main(int argc, char **argv) {
- int ch;
-
- setlocale(LC_ALL, "");
- bindtextdomain(PACKAGE, LOCALEDIR);
- textdomain(PACKAGE);
- atexit(close_stdout);
-
- while ((ch = getopt(argc, argv, "0123456789yli:f:h:t:")) != -1)
- switch((char)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)
- maxrec = atol(argv[optind - 1] + 1);
- break;
- case 'f':
- file = optarg;
- break;
- case 'h':
- hostconv(optarg);
- addarg(HOST_TYPE, optarg);
- break;
- case 't':
- addarg(TTY_TYPE, ttyconv(optarg));
- break;
- case 'y':
- doyear = 1;
- break;
- case 'l':
- dolong = 1;
- break;
- case 'i':
- addarg(INET_TYPE, optarg);
- break;
- case '?':
- default:
- fputs(_("usage: last [-#] [-f file] [-t tty] [-h hostname] [user ...]\n"), stderr);
- exit(EXIT_FAILURE);
- }
- 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();
-
- return EXIT_SUCCESS;
-}
-
-static char *utmp_ctime(struct utmp *u)
-{
- time_t t = (time_t) u->ut_time;
- return ctime(&t);
-}
-
-/*
- * print_partial_line --
- * print the first part of each output line according to specified format
- */
-static void
-print_partial_line(struct utmp *bp) {
- char *ct;
-
- ct = utmp_ctime(bp);
- printf("%-*.*s %-*.*s ", P_NMAX, P_NMAX, bp->ut_name,
- P_LMAX, P_LMAX, bp->ut_line);
-
- if (dolong) {
- if (bp->ut_addr) {
- struct in_addr foo;
- foo.s_addr = bp->ut_addr;
- printf("%-*.*s ", P_HMAX, P_HMAX, inet_ntoa(foo));
- } else {
- printf("%-*.*s ", P_HMAX, P_HMAX, "");
- }
- } else {
- printf("%-*.*s ", P_HMAX, P_HMAX, bp->ut_host);
- }
-
- if (doyear) {
- printf("%10.10s %4.4s %5.5s ", ct, ct + 20, ct + 11);
- } else {
- printf("%10.10s %5.5s ", ct, ct + 11);
- }
-}
-
-/*
- * wtmp --
- * read through the wtmp file
- */
-static void
-wtmp(void) {
- register struct utmp *bp; /* current structure */
- register TTY *T; /* tty list entry */
- long delta; /* time difference */
- char *crmsg = NULL;
- char *ct = NULL;
- int fd;
- struct utmp *utl;
- struct stat st;
- int utl_len;
- int listnr = 0;
- int i;
-
- utmpname(file);
-
- {
-#if defined(_HAVE_UT_TV)
- struct timeval tv;
- gettimeofday(&tv, NULL);
- utmpbuf.ut_tv.tv_sec = tv.tv_sec;
- utmpbuf.ut_tv.tv_usec = tv.tv_usec;
-#else
- time_t t;
- time(&t);
- utmpbuf.ut_time = t;
-#endif
- }
-
- (void)signal(SIGINT, onintr);
- (void)signal(SIGQUIT, onintr);
-
- if ((fd = open(file,O_RDONLY)) < 0)
- err(EXIT_FAILURE, _("cannot open %s"), file);
-
- fstat(fd, &st);
- utl_len = st.st_size;
- utl = mmap(NULL, utl_len, PROT_READ|PROT_WRITE,
- MAP_PRIVATE|MAP_FILE, fd, 0);
- if (utl == NULL)
- err(EXIT_FAILURE, _("%s: mmap failed"), file);
-
- listnr = utl_len/sizeof(struct utmp);
-
- if(listnr)
- ct = utmp_ctime(&utl[0]);
-
- for(i = listnr - 1; i >= 0; i--) {
- bp = utl+i;
- /*
- * if the terminal line is '~', the machine stopped.
- * see utmp(5) for more info.
- */
- if (!strncmp(bp->ut_line, "~", LMAX)) {
- /*
- * utmp(5) also mentions that the user
- * name should be 'shutdown' or 'reboot'.
- * Not checking the name causes e.g. runlevel
- * changes to be displayed as 'crash'. -thaele
- */
- if (!strncmp(bp->ut_user, "reboot", NMAX) ||
- !strncmp(bp->ut_user, "shutdown", NMAX)) {
- /* 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", NMAX)
- ? "crash" : "down ");
- if (!bp->ut_name[0])
- (void)strcpy(bp->ut_name, "reboot");
- if (want(bp, NO)) {
- ct = utmp_ctime(bp);
- if(bp->ut_type != LOGIN_PROCESS) {
- print_partial_line(bp);
- putchar('\n');
- }
- 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, LMAX))
- break;
- }
- if (bp->ut_name[0] && bp->ut_type != LOGIN_PROCESS
- && bp->ut_type != DEAD_PROCESS
- && want(bp, YES)) {
-
- print_partial_line(bp);
-
- 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 < SECDAY)
- printf(" (%5.5s)\n", asctime(gmtime(&delta))+11);
- else
- printf(" (%ld+%5.5s)\n", delta / SECDAY, asctime(gmtime(&delta))+11);
- }
- if (maxrec != -1 && !--maxrec)
- return;
- }
- T->logout = bp->ut_time;
- utmpbuf.ut_time = bp->ut_time;
- }
- munmap(utl,utl_len);
- close(fd);
- if(ct) printf(_("\nwtmp begins %s"), ct); /* ct already ends in \n */
-}
-
-/*
- * want --
- * see if want this entry
- */
-static int
-want(struct utmp *bp, int check) {
- register 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 (!strncmp(step->name, bp->ut_host, HMAX))
- return YES;
- break;
- case TTY_TYPE:
- if (!strncmp(step->name, bp->ut_line, LMAX))
- return YES;
- break;
- case USER_TYPE:
- if (!strncmp(step->name, bp->ut_name, NMAX))
- return YES;
- break;
- case INET_TYPE:
- if ((in_addr_t) bp->ut_addr == inet_addr(step->name))
- return YES;
- break;
- default:
- abort();
- }
- return NO;
-}
-
-/*
- * addarg --
- * add an entry to a linked list of arguments
- */
-static void
-addarg(int type, char *arg) {
- register ARG *cur;
-
- cur = xmalloc(sizeof(ARG));
- cur->next = arglist;
- cur->type = type;
- cur->name = arg;
- arglist = cur;
-}
-
-/*
- * addtty --
- * add an entry to a linked list of ttys
- */
-TTY *
-addtty(char *ttyname) {
- register TTY *cur;
-
- cur = xmalloc(sizeof(TTY));
- cur->next = ttylist;
- cur->logout = currentout;
- memcpy(cur->tty, ttyname, LMAX);
- 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.
- */
-static void
-hostconv(char *arg) {
- static int first = 1;
- static char *hostdot, *name;
-
- char *argdot;
-
- if (!(argdot = strchr(arg, '.')))
- return;
-
- if (first) {
- first = 0;
- name = xgethostname();
- if (!name)
- err(EXIT_FAILURE, _("gethostname failed"));
-
- hostdot = strchr(name, '.');
- }
- if (hostdot && !strcmp(hostdot, argdot))
- *argdot = '\0';
-}
-
-/*
- * ttyconv --
- * convert tty to correct name.
- */
-static char *
-ttyconv(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" */
- mval = xmalloc(8);
- if (!strncmp(arg, "co", 2))
- (void)strcpy(mval, "console");
- else {
- (void)strcpy(mval, "tty");
- (void)strncpy(mval + 3, arg, 4);
- }
- return mval;
- }
- if (!strncmp(arg, "/dev/", sizeof("/dev/") - 1))
- return arg + 5;
-
- return arg;
-}
-
-/*
- * onintr --
- * on interrupt, we inform the user how far we've gotten
- */
-static void
-onintr(int signo) {
- char *ct;
-
- ct = utmp_ctime(&utmpbuf);
- printf(_("\ninterrupted %10.10s %5.5s \n"), ct, ct + 11);
- if (signo == SIGINT)
- _exit(EXIT_FAILURE);
- fflush(stdout); /* fix required for rsh */
-}
projects / thirdparty / util-linux.git / commitdiff
