/*
* wtmp --
* read through the wtmp file
*/
void
wtmp(const char *file, int namesz, int linesz, int hostsz)
{
struct utmp *bp; /* current structure */
TTY *T; /* tty list entry */
struct stat stb; /* stat of file for sz */
time_t delta; /* time difference */
off_t bl;
int bytes, wfd;
char *ct;
const char *crmsg;
size_t len = sizeof(*buf) * MAXUTMP;
if ((buf = malloc(len)) == NULL)
err(1, "Cannot allocate utmp buffer");
crmsg = NULL;
if ((wfd = open(file, O_RDONLY, 0)) < 0 || fstat(wfd, &stb) == -1)
err(1, "%s", file);
bl = (stb.st_size + len - 1) / len;
buf[FIRSTVALID].ut_timefld = time(NULL);
(void)signal(SIGINT, onintr);
(void)signal(SIGQUIT, onintr);
while (--bl >= 0) {
if (lseek(wfd, bl * len, SEEK_SET) == -1 ||
(bytes = read(wfd, buf, len)) == -1)
err(1, "%s", file);
for (bp = &buf[bytes / sizeof(*buf) - 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_timefld;
currentout = -bp->ut_timefld;
crmsg = strncmp(bp->ut_name, "shutdown",
namesz) ? "crash" : "shutdown";
if (want(bp, NO)) {
ct = fmttime(bp->ut_timefld, fulltime);
printf("%-*.*s %-*.*s %-*.*s %s\n",
namesz, namesz, bp->ut_name,
linesz, linesz, bp->ut_line,
hostsz, hostsz, bp->ut_host, ct);
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 = fmttime(bp->ut_timefld, fulltime);
printf("%-*.*s %-*.*s %-*.*s %s\n",
namesz, namesz,
bp->ut_name,
linesz, linesz,
bp->ut_line,
hostsz, hostsz,
bp->ut_host,
ct);
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, LINESIZE))
break;
}
if (TYPE(bp) == SIGNATURE)
continue;
if (bp->ut_name[0] && want(bp, YES)) {
ct = fmttime(bp->ut_timefld, fulltime);
printf("%-*.*s %-*.*s %-*.*s %s ",
namesz, namesz, bp->ut_name,
linesz, linesz, bp->ut_line,
hostsz, hostsz, bp->ut_host,
ct);
if (!T->logout)
puts(" still logged in");
else {
if (T->logout < 0) {
T->logout = -T->logout;
printf("- %s", crmsg);
}
else
printf("- %s",
fmttime(T->logout,
fulltime | TIMEONLY));
delta = T->logout - bp->ut_timefld;
if (delta < SECSPERDAY)
printf(" (%s)\n",
fmttime(delta,
fulltime | TIMEONLY | GMT));
else
printf(" (%ld+%s)\n",
delta / SECSPERDAY,
fmttime(delta,
fulltime | TIMEONLY | GMT));
}
if (maxrec != -1 && !--maxrec)
return;
}
T->logout = bp->ut_timefld;
}
}
fulltime = 1; /* show full time */
crmsg = fmttime(buf[FIRSTVALID].ut_timefld, FULLTIME);
if ((ct = strrchr(file, '/')) != NULL)
ct++;
printf("\n%s begins %s\n", ct ? ct : file, crmsg);
}
/*
* read through the wtmp file
*/
void
wtmp(void)
{
time_t delta, total = 0;
int timesize, wfd, snapfound = 0;
char *ct, *crmsg, tim[40];
struct utmp *bp;
struct stat stb;
ssize_t bytes;
off_t bl;
struct ttytab *T;
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);
if (fulltime)
timesize = 8; /* HH:MM:SS */
else
timesize = 5; /* HH:MM */
(void)time(&buf[0].ut_time);
(void)signal(SIGINT, onintr);
(void)signal(SIGQUIT, onintr);
while (--bl >= 0) {
if (lseek(wfd, bl * sizeof(buf), SEEK_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 we're in snapshot mode, we want to
* exit if this shutdown/reboot appears
* while we we are tracking the active
* range
*/
if (snaptime && snapfound) {
close(wfd);
return;
}
/*
* don't print shutdown/reboot entries
* unless flagged for
*/
if (want(bp, NO)) {
if (seconds) {
snprintf(tim, sizeof tim, "%ld",
(long)bp->ut_time);
} else {
ct = ctime(&bp->ut_time);
snprintf(tim, sizeof tim,
"%10.10s %*.*s", ct,
timesize, timesize, ct + 11);
}
printf("%-*.*s %-*.*s %-*.*s %s \n",
NAME_WIDTH, UT_NAMESIZE, bp->ut_name,
UT_LINESIZE, UT_LINESIZE, bp->ut_line,
HOST_WIDTH, UT_HOSTSIZE, bp->ut_host,
tim);
if (maxrec != -1 && !--maxrec) {
close(wfd);
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)) {
if (seconds) {
snprintf(tim, sizeof tim, "%ld",
(long)bp->ut_time);
} else {
ct = ctime(&bp->ut_time);
snprintf(tim, sizeof tim,
"%10.10s %*.*s", ct,
timesize, timesize, ct + 11);
}
printf("%-*.*s %-*.*s %-*.*s %s \n",
NAME_WIDTH, UT_NAMESIZE, bp->ut_name,
UT_LINESIZE, UT_LINESIZE, bp->ut_line,
HOST_WIDTH, UT_HOSTSIZE, bp->ut_host,
tim);
if (maxrec && !--maxrec) {
close(wfd);
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;
}
/*
* print record if not in snapshot mode and wanted
* or in snapshot mode and in snapshot range
*/
if (bp->ut_name[0] &&
((want(bp, YES)) || (bp->ut_time < snaptime &&
(T->logout > snaptime || !T->logout ||
T->logout < 0)))) {
snapfound = 1;
if (seconds) {
snprintf(tim, sizeof tim, "%ld",
(long)bp->ut_time);
} else {
ct = ctime(&bp->ut_time);
snprintf(tim, sizeof tim,
"%10.10s %*.*s", ct,
timesize, timesize, ct + 11);
}
printf("%-*.*s %-*.*s %-*.*s %s ",
NAME_WIDTH, UT_NAMESIZE, bp->ut_name,
UT_LINESIZE, UT_LINESIZE, bp->ut_line,
HOST_WIDTH, UT_HOSTSIZE, bp->ut_host,
tim);
if (!T->logout)
puts(" still logged in");
else {
if (T->logout < 0) {
T->logout = -T->logout;
printf("- %s", crmsg);
} else {
if (seconds)
printf("- %ld",
(long)T->logout);
else
printf("- %*.*s",
timesize, timesize,
ctime(&T->logout)+11);
}
delta = T->logout - bp->ut_time;
if (seconds)
printf(" (%ld)\n", (long)delta);
else {
if (delta < SECSPERDAY)
printf(" (%*.*s)\n",
timesize, timesize,
asctime(gmtime(&delta))+11);
else
printf(" (%ld+%*.*s)\n",
delta / SECSPERDAY,
timesize, timesize,
asctime(gmtime(&delta))+11);
}
if (calculate)
total += delta;
}
if (maxrec != -1 && !--maxrec) {
close(wfd);
return;
}
}
T->logout = bp->ut_time;
}
}
close(wfd);
if (calculate) {
if ((total / SECSPERDAY) > 0) {
int days = (total / SECSPERDAY);
total -= (days * SECSPERDAY);
printf("\nTotal time: %d days, %*.*s\n",
days, timesize, timesize,
asctime(gmtime(&total))+11);
} else
printf("\nTotal time: %*.*s\n",
timesize, timesize,
asctime(gmtime(&total))+11);
}
ct = ctime(&buf[0].ut_time);
printf("\nwtmp begins %10.10s %*.*s %4.4s\n", ct, timesize, timesize,
ct + 11, ct + 20);
}
/*
* 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)
exit(1);
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)
exit(1);
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 */
}
