static void
dolastlogx(int quiet)
{
struct lastlogx ll;
if (!quiet && getlastlogx(_PATH_LASTLOGX, pwd->pw_uid, &ll) != NULL) {
time_t t = (time_t)ll.ll_tv.tv_sec;
(void)printf("Last login: %.24s ", ctime(&t));
if (*ll.ll_host != '\0')
(void)printf("from %.*s ",
(int)sizeof(ll.ll_host),
ll.ll_host);
(void)printf("on %.*s\n",
(int)sizeof(ll.ll_line),
ll.ll_line);
}
ll.ll_tv = now;
(void)strncpy(ll.ll_line, tty, sizeof(ll.ll_line));
if (hostname)
(void)strncpy(ll.ll_host, hostname, sizeof(ll.ll_host));
else
(void)memset(ll.ll_host, '\0', sizeof(ll.ll_host));
if (have_ss)
ll.ll_ss = ss;
else
(void)memset(&ll.ll_ss, 0, sizeof(ll.ll_ss));
if (updlastlogx(_PATH_LASTLOGX, pwd->pw_uid, &ll) != 0)
syslog(LOG_NOTICE, "Cannot update lastlogx: %m");
}
/*
* Returns the time when the user last logged in. Returns 0 if the
* information is not available. This must be called before record_login.
* The host the user logged in from will be returned in buf.
*/
time_t
get_last_login_time(uid_t uid, const char *logname,
char *buf, size_t bufsize)
{
#ifdef SUPPORT_UTMPX
struct lastlogx llx, *llxp;
#endif
#ifdef SUPPORT_UTMP
struct lastlog ll;
int fd;
#endif
off_t pos, r;
buf[0] = '\0';
#ifdef SUPPORT_UTMPX
if ((llxp = getlastlogx(_PATH_LASTLOGX, uid, &llx)) != NULL) {
if (bufsize > sizeof(llxp->ll_host) + 1)
bufsize = sizeof(llxp->ll_host) + 1;
strncpy(buf, llxp->ll_host, bufsize - 1);
buf[bufsize - 1] = 0;
return llxp->ll_tv.tv_sec;
}
#endif
#ifdef SUPPORT_UTMP
fd = open(_PATH_LASTLOG, O_RDONLY);
if (fd < 0)
return 0;
pos = (off_t)uid * sizeof(ll);
r = lseek(fd, pos, SEEK_SET);
if (r == -1) {
error("%s: lseek: %s", __func__, strerror(errno));
close(fd);
return (0);
}
if (r != pos) {
debug("%s: truncated lastlog", __func__);
close(fd);
return (0);
}
if (read(fd, &ll, sizeof(ll)) != sizeof(ll)) {
close(fd);
return 0;
}
close(fd);
if (bufsize > sizeof(ll.ll_host) + 1)
bufsize = sizeof(ll.ll_host) + 1;
strncpy(buf, ll.ll_host, bufsize - 1);
buf[bufsize - 1] = '\0';
return (time_t)ll.ll_time;
#else
return 0;
#endif
}
