static void
process_utmp(void)
{
struct utmpx *utx;
while ((utx = getutxent()) != NULL) {
if (((aflag || !bflag) && utx->ut_type == USER_PROCESS) ||
(bflag && utx->ut_type == BOOT_TIME))
if (ttystat(utx->ut_line) == 0)
row(utx);
}
}
static void
process_utmp(void)
{
struct utmpx *utx;
while ((utx = getutxent()) != NULL) {
if (utx->ut_type != USER_PROCESS)
continue;
if (ttystat(utx->ut_line) != 0)
continue;
row(utx);
}
}
static void
process(struct entry *ep)
{
struct stat *stp;
time_t touched;
int max;
if ((max = strlen(ep->name)) > maxname)
maxname = max;
if ((max = strlen(ep->line)) > maxline)
maxline = max;
if ((max = strlen(ep->host)) > maxhost)
maxhost = max;
ep->tdev = 0;
ep->idle = (time_t)-1;
if (!(stp = ttystat(ep->line, maxline)))
return; /* corrupted record */
ep->tdev = stp->st_rdev;
#ifdef CPU_CONSDEV
/*
* If this is the console device, attempt to ascertain
* the true console device dev_t.
*/
if (ep->tdev == 0) {
int mib[2];
size_t size;
mib[0] = CTL_MACHDEP;
mib[1] = CPU_CONSDEV;
size = sizeof(dev_t);
(void)sysctl(mib, 2, &ep->tdev, &size, NULL, 0);
}
#endif
touched = stp->st_atime;
if (touched < ep->tv.tv_sec) {
/* tty untouched since before login */
touched = ep->tv.tv_sec;
}
if ((ep->idle = now - touched) < 0)
ep->idle = 0;
}
int
main(int argc, char *argv[])
{
extern char *__progname;
struct kinfo_proc *kp;
struct hostent *hp;
struct stat *stp;
FILE *ut;
struct in_addr addr;
int ch, i, nentries, nusers, wcmd;
char *memf, *nlistf, *p, *x;
char buf[MAXHOSTNAMELEN], errbuf[_POSIX2_LINE_MAX];
/* Are we w(1) or uptime(1)? */
p = __progname;
if (*p == '-')
p++;
if (p[0] == 'w' && p[1] == '\0') {
wcmd = 1;
p = "hiflM:N:asuw";
} else if (!strcmp(p, "uptime")) {
wcmd = 0;
p = "";
} else
errx(1,
"this program should be invoked only as \"w\" or \"uptime\"");
memf = nlistf = NULL;
while ((ch = getopt(argc, argv, p)) != -1)
switch (ch) {
case 'h':
header = 0;
break;
case 'i':
sortidle = 1;
break;
case 'M':
header = 0;
memf = optarg;
break;
case 'N':
nlistf = optarg;
break;
case 'a':
nflag = 0;
break;
case 'f': case 'l': case 's': case 'u': case 'w':
warnx("[-flsuw] no longer supported");
/* FALLTHROUGH */
case '?':
default:
usage(wcmd);
}
argc -= optind;
argv += optind;
if (nlistf == NULL && memf == NULL) {
if ((kd = kvm_openfiles(nlistf, memf, NULL, KVM_NO_FILES,
errbuf)) == NULL)
errx(1, "%s", errbuf);
} else {
if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == NULL)
errx(1, "%s", errbuf);
}
(void)time(&now);
if ((ut = fopen(_PATH_UTMP, "r")) == NULL)
err(1, "%s", _PATH_UTMP);
if (*argv)
sel_user = *argv;
for (nusers = 0; fread(&utmp, sizeof(utmp), 1, ut);) {
if (utmp.ut_name[0] == '\0')
continue;
++nusers;
if (wcmd == 0 || (sel_user &&
strncmp(utmp.ut_name, sel_user, UT_NAMESIZE) != 0))
continue;
if ((ep = calloc(1, sizeof(*ep))) == NULL)
err(1, NULL);
*nextp = ep;
nextp = &(ep->next);
memcpy(&(ep->utmp), &utmp, sizeof(utmp));
if (!(stp = ttystat(ep->utmp.ut_line)))
continue;
ep->tdev = stp->st_rdev;
/*
* If this is the console device, attempt to ascertain
* the true console device dev_t.
*/
if (ep->tdev == 0) {
int mib[2];
size_t size;
mib[0] = CTL_KERN;
mib[1] = KERN_CONSDEV;
size = sizeof(dev_t);
(void) sysctl(mib, 2, &ep->tdev, &size, NULL, 0);
}
if ((ep->idle = now - stp->st_atime) < 0)
ep->idle = 0;
}
(void)fclose(ut);
if (header || wcmd == 0) {
pr_header(&now, nusers);
if (wcmd == 0)
exit (0);
}
#define HEADER "USER TTY FROM LOGIN@ IDLE WHAT"
#define WUSED (sizeof(HEADER) - sizeof("WHAT"))
(void)puts(HEADER);
kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(*kp), &nentries);
if (kp == NULL)
errx(1, "%s", kvm_geterr(kd));
for (i = 0; i < nentries; i++, kp++) {
if (kp->p_stat == SIDL || kp->p_stat == SZOMB)
continue;
for (ep = ehead; ep != NULL; ep = ep->next) {
/* ftp is a special case. */
if (strncmp(ep->utmp.ut_line, "ftp", 3) == 0) {
char pidstr[UT_LINESIZE-2];
pid_t fp;
(void)strncpy(pidstr, &ep->utmp.ut_line[3],
sizeof(pidstr) - 1);
pidstr[sizeof(pidstr) - 1] = '\0';
fp = (pid_t)strtol(pidstr, NULL, 10);
if (kp->p_pid == fp) {
ep->kp = kp;
break;
}
} else if (ep->tdev == kp->p_tdev &&
kp->p__pgid == kp->p_tpgid) {
/*
* Proc is in foreground of this terminal
*/
if (proc_compare(ep->kp, kp))
ep->kp = kp;
break;
}
}
}
if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 &&
ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 &&
ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0)
ttywidth = 79;
else
ttywidth = ws.ws_col - 1;
argwidth = ttywidth - WUSED;
if (argwidth < 4)
argwidth = 8;
/* sort by idle time */
if (sortidle && ehead != NULL) {
struct entry *from = ehead, *save;
ehead = NULL;
while (from != NULL) {
for (nextp = &ehead;
(*nextp) && from->idle >= (*nextp)->idle;
nextp = &(*nextp)->next)
continue;
save = from;
from = from->next;
save->next = *nextp;
*nextp = save;
}
}
if (!nflag) {
if (gethostname(domain, sizeof(domain)) < 0 ||
(p = strchr(domain, '.')) == 0)
domain[0] = '\0';
else {
domain[sizeof(domain) - 1] = '\0';
memmove(domain, p, strlen(p) + 1);
}
}
for (ep = ehead; ep != NULL; ep = ep->next) {
p = *ep->utmp.ut_host ? ep->utmp.ut_host : "-";
for (x = NULL, i = 0; p[i] != '\0' && i < UT_HOSTSIZE; i++)
if (p[i] == ':') {
x = &p[i];
*x++ = '\0';
break;
}
if (!nflag && inet_aton(p, &addr) &&
(hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET))) {
if (domain[0] != '\0') {
p = hp->h_name;
p += strlen(hp->h_name);
p -= strlen(domain);
if (p > hp->h_name &&
strcasecmp(p, domain) == 0)
*p = '\0';
}
p = hp->h_name;
}
if (x) {
(void)snprintf(buf, sizeof(buf), "%s:%.*s", p,
(int)(ep->utmp.ut_host + UT_HOSTSIZE - x), x);
p = buf;
}
(void)printf("%-*.*s %-2.2s %-*.*s ",
NAME_WIDTH, UT_NAMESIZE, ep->utmp.ut_name,
strncmp(ep->utmp.ut_line, "tty", 3) ?
ep->utmp.ut_line : ep->utmp.ut_line + 3,
HOST_WIDTH, HOST_WIDTH, *p ? p : "-");
pr_attime(&ep->utmp.ut_time, &now);
pr_idle(ep->idle);
pr_args(ep->kp);
printf("\n");
}
exit(0);
}
int
main(int argc, char *argv[])
{
struct kinfo_proc *kp;
struct kinfo_proc *dkp;
struct stat *stp;
time_t touched;
int ch, i, nentries, nusers, wcmd, longidle, longattime, dropgid;
const char *memf, *nlistf, *p;
char *x_suffix;
char buf[MAXHOSTNAMELEN], errbuf[_POSIX2_LINE_MAX];
char fn[MAXHOSTNAMELEN];
char *dot;
(void)setlocale(LC_ALL, "");
use_ampm = (*nl_langinfo(T_FMT_AMPM) != '\0');
use_comma = (*nl_langinfo(RADIXCHAR) != ',');
/* Are we w(1) or uptime(1)? */
if (this_is_uptime(argv[0]) == 0) {
wcmd = 0;
p = "";
} else {
wcmd = 1;
p = "dhiflM:N:nsuw";
}
dropgid = 0;
memf = _PATH_DEVNULL;
nlistf = NULL;
while ((ch = getopt(argc, argv, p)) != -1)
switch (ch) {
case 'd':
dflag = 1;
break;
case 'h':
header = 0;
break;
case 'i':
sortidle = 1;
break;
case 'M':
header = 0;
memf = optarg;
dropgid = 1;
break;
case 'N':
nlistf = optarg;
dropgid = 1;
break;
case 'n':
nflag = 1;
break;
case 'f': case 'l': case 's': case 'u': case 'w':
warnx("[-flsuw] no longer supported");
/* FALLTHROUGH */
case '?':
default:
usage(wcmd);
}
argc -= optind;
argv += optind;
if (!(_res.options & RES_INIT))
res_init();
_res.retrans = 2; /* resolver timeout to 2 seconds per try */
_res.retry = 1; /* only try once.. */
/*
* Discard setgid privileges if not the running kernel so that bad
* guys can't print interesting stuff from kernel memory.
*/
if (dropgid)
setgid(getgid());
if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == NULL)
errx(1, "%s", errbuf);
(void)time(&now);
if (*argv)
sel_users = argv;
setutxent();
for (nusers = 0; (utmp = getutxent()) != NULL;) {
if (utmp->ut_type != USER_PROCESS)
continue;
if (!(stp = ttystat(utmp->ut_line)))
continue; /* corrupted record */
++nusers;
if (wcmd == 0)
continue;
if (sel_users) {
int usermatch;
char **user;
usermatch = 0;
for (user = sel_users; !usermatch && *user; user++)
if (!strcmp(utmp->ut_user, *user))
usermatch = 1;
if (!usermatch)
continue;
}
if ((ep = calloc(1, sizeof(struct entry))) == NULL)
errx(1, "calloc");
*nextp = ep;
nextp = &ep->next;
memmove(&ep->utmp, utmp, sizeof *utmp);
ep->tdev = stp->st_rdev;
/*
* If this is the console device, attempt to ascertain
* the true console device dev_t.
*/
if (ep->tdev == 0) {
size_t size;
size = sizeof(dev_t);
(void)sysctlbyname("machdep.consdev", &ep->tdev, &size, NULL, 0);
}
touched = stp->st_atime;
if (touched < ep->utmp.ut_tv.tv_sec) {
/* tty untouched since before login */
touched = ep->utmp.ut_tv.tv_sec;
}
if ((ep->idle = now - touched) < 0)
ep->idle = 0;
}
endutxent();
if (header || wcmd == 0) {
pr_header(&now, nusers);
if (wcmd == 0) {
(void)kvm_close(kd);
exit(0);
}
#define HEADER_USER "USER"
#define HEADER_TTY "TTY"
#define HEADER_FROM "FROM"
#define HEADER_LOGIN_IDLE "LOGIN@ IDLE "
#define HEADER_WHAT "WHAT\n"
#define WUSED (W_DISPUSERSIZE + W_DISPLINESIZE + W_DISPHOSTSIZE + \
sizeof(HEADER_LOGIN_IDLE) + 3) /* header width incl. spaces */
(void)printf("%-*.*s %-*.*s %-*.*s %s",
W_DISPUSERSIZE, W_DISPUSERSIZE, HEADER_USER,
W_DISPLINESIZE, W_DISPLINESIZE, HEADER_TTY,
W_DISPHOSTSIZE, W_DISPHOSTSIZE, HEADER_FROM,
HEADER_LOGIN_IDLE HEADER_WHAT);
}
if ((kp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nentries)) == NULL)
err(1, "%s", kvm_geterr(kd));
for (i = 0; i < nentries; i++, kp++) {
if (kp->ki_stat == SIDL || kp->ki_stat == SZOMB ||
kp->ki_tdev == NODEV)
continue;
for (ep = ehead; ep != NULL; ep = ep->next) {
if (ep->tdev == kp->ki_tdev) {
/*
* proc is associated with this terminal
*/
if (ep->kp == NULL && kp->ki_pgid == kp->ki_tpgid) {
/*
* Proc is 'most interesting'
*/
if (proc_compare(ep->kp, kp))
ep->kp = kp;
}
/*
* Proc debug option info; add to debug
* list using kinfo_proc ki_spare[0]
* as next pointer; ptr to ptr avoids the
* ptr = long assumption.
*/
dkp = ep->dkp;
ep->dkp = kp;
debugproc(kp) = dkp;
}
}
}
if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 &&
ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 &&
ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == -1) || ws.ws_col == 0)
ttywidth = 79;
else
ttywidth = ws.ws_col - 1;
argwidth = ttywidth - WUSED;
if (argwidth < 4)
argwidth = 8;
for (ep = ehead; ep != NULL; ep = ep->next) {
if (ep->kp == NULL) {
ep->args = strdup("-");
continue;
}
ep->args = fmt_argv(kvm_getargv(kd, ep->kp, argwidth),
ep->kp->ki_comm, NULL, MAXCOMLEN);
if (ep->args == NULL)
err(1, NULL);
}
/* sort by idle time */
if (sortidle && ehead != NULL) {
struct entry *from, *save;
from = ehead;
ehead = NULL;
while (from != NULL) {
for (nextp = &ehead;
(*nextp) && from->idle >= (*nextp)->idle;
nextp = &(*nextp)->next)
continue;
save = from;
from = from->next;
save->next = *nextp;
*nextp = save;
}
}
for (ep = ehead; ep != NULL; ep = ep->next) {
struct addrinfo hints, *res;
struct sockaddr_storage ss;
struct sockaddr *sa = (struct sockaddr *)&ss;
struct sockaddr_in *lsin = (struct sockaddr_in *)&ss;
struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *)&ss;
time_t t;
int isaddr;
p = *ep->utmp.ut_host ? ep->utmp.ut_host : "-";
if ((x_suffix = strrchr(p, ':')) != NULL) {
if ((dot = strchr(x_suffix, '.')) != NULL &&
strchr(dot+1, '.') == NULL)
*x_suffix++ = '\0';
else
x_suffix = NULL;
}
isaddr = 0;
memset(&ss, '\0', sizeof(ss));
if (inet_pton(AF_INET6, p, &lsin6->sin6_addr) == 1) {
lsin6->sin6_len = sizeof(*lsin6);
lsin6->sin6_family = AF_INET6;
isaddr = 1;
} else if (inet_pton(AF_INET, p, &lsin->sin_addr) == 1) {
lsin->sin_len = sizeof(*lsin);
lsin->sin_family = AF_INET;
isaddr = 1;
}
if (!nflag) {
/* Attempt to change an IP address into a name */
if (isaddr && realhostname_sa(fn, sizeof(fn), sa,
sa->sa_len) == HOSTNAME_FOUND)
p = fn;
} else if (!isaddr) {
/*
* If a host has only one A/AAAA RR, change a
* name into an IP address
*/
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_PASSIVE;
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
if (getaddrinfo(p, NULL, &hints, &res) == 0) {
if (res->ai_next == NULL &&
getnameinfo(res->ai_addr, res->ai_addrlen,
fn, sizeof(fn), NULL, 0,
NI_NUMERICHOST) == 0)
p = fn;
freeaddrinfo(res);
}
}
if (x_suffix) {
(void)snprintf(buf, sizeof(buf), "%s:%s", p, x_suffix);
p = buf;
}
if (dflag) {
for (dkp = ep->dkp; dkp != NULL; dkp = debugproc(dkp)) {
const char *ptr;
ptr = fmt_argv(kvm_getargv(kd, dkp, argwidth),
dkp->ki_comm, NULL, MAXCOMLEN);
if (ptr == NULL)
ptr = "-";
(void)printf("\t\t%-9d %s\n",
dkp->ki_pid, ptr);
}
}
(void)printf("%-*.*s %-*.*s %-*.*s ",
W_DISPUSERSIZE, W_DISPUSERSIZE, ep->utmp.ut_user,
W_DISPLINESIZE, W_DISPLINESIZE,
*ep->utmp.ut_line ?
(strncmp(ep->utmp.ut_line, "tty", 3) &&
strncmp(ep->utmp.ut_line, "cua", 3) ?
ep->utmp.ut_line : ep->utmp.ut_line + 3) : "-",
W_DISPHOSTSIZE, W_DISPHOSTSIZE, *p ? p : "-");
t = ep->utmp.ut_tv.tv_sec;
longattime = pr_attime(&t, &now);
longidle = pr_idle(ep->idle);
(void)printf("%.*s\n", argwidth - longidle - longattime,
ep->args);
}
(void)kvm_close(kd);
exit(0);
}
int
main(int argc, char *argv[])
{
struct iovec iov;
struct utmpx *utmp;
int ch;
int ingroup;
struct wallgroup *g;
struct group *grp;
char **np;
const char *p;
struct passwd *pw;
(void)setlocale(LC_CTYPE, "");
while ((ch = getopt(argc, argv, "g:n")) != -1)
switch (ch) {
case 'n':
/* undoc option for shutdown: suppress banner */
if (geteuid() == 0)
nobanner = 1;
break;
case 'g':
g = (struct wallgroup *)malloc(sizeof *g);
g->next = grouplist;
g->name = optarg;
g->gid = -1;
grouplist = g;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc > 1)
usage();
for (g = grouplist; g; g = g->next) {
grp = getgrnam(g->name);
if (grp != NULL)
g->gid = grp->gr_gid;
else
warnx("%s: no such group", g->name);
}
makemsg(*argv);
iov.iov_base = mbuf;
iov.iov_len = mbufsize;
/* NOSTRICT */
while ((utmp = getutxent()) != NULL) {
if (utmp->ut_type != USER_PROCESS)
continue;
if (ttystat(utmp->ut_line) != 0)
continue;
if (grouplist) {
ingroup = 0;
pw = getpwnam(utmp->ut_user);
if (!pw)
continue;
for (g = grouplist; g && ingroup == 0; g = g->next) {
if (g->gid == (gid_t)-1)
continue;
if (g->gid == pw->pw_gid)
ingroup = 1;
else if ((grp = getgrgid(g->gid)) != NULL) {
for (np = grp->gr_mem; *np; np++) {
if (strcmp(*np, utmp->ut_user) == 0) {
ingroup = 1;
break;
}
}
}
}
if (ingroup == 0)
continue;
}
if ((p = ttymsg(&iov, 1, utmp->ut_line, 60*5)) != NULL)
warnx("%s", p);
}
exit(0);
}
int
main(int argc, char *argv[])
{
struct iovec iov;
#ifdef __APPLE__
// rdar://problem/4433603
struct utmpx *u;
#else
struct utmp utmp;
#endif
int ch;
int ingroup;
#ifndef __APPLE__
FILE *fp;
#endif
struct wallgroup *g;
struct group *grp;
char **np;
const char *p;
struct passwd *pw;
#ifdef __APPLE__
char line[sizeof(u->ut_line) + 1];
char username[sizeof(u->ut_user) + 1];
#else
char line[sizeof(utmp.ut_line) + 1];
char username[sizeof(utmp.ut_name) + 1];
#endif
(void)setlocale(LC_CTYPE, "");
while ((ch = getopt(argc, argv, "g:n")) != -1)
switch (ch) {
case 'n':
/* undoc option for shutdown: suppress banner */
if (geteuid() == 0)
nobanner = 1;
break;
case 'g':
g = (struct wallgroup *)malloc(sizeof *g);
g->next = grouplist;
g->name = optarg;
g->gid = -1;
grouplist = g;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc > 1)
usage();
for (g = grouplist; g; g = g->next) {
grp = getgrnam(g->name);
if (grp != NULL)
g->gid = grp->gr_gid;
else
warnx("%s: no such group", g->name);
}
makemsg(*argv);
#ifdef __APPLE__
setutxent();
#else
if (!(fp = fopen(_PATH_UTMP, "r")))
err(1, "cannot read %s", _PATH_UTMP);
#endif
iov.iov_base = mbuf;
iov.iov_len = mbufsize;
/* NOSTRICT */
#ifdef __APPLE__
while ((u = getutxent()) != NULL) {
if (!u->ut_user[0] || u->ut_type != USER_PROCESS)
continue;
#else
while (fread((char *)&utmp, sizeof(utmp), 1, fp) == 1) {
if (!utmp.ut_name[0])
continue;
if (ttystat(utmp.ut_line, UT_LINESIZE) != 0)
continue;
#endif
if (grouplist) {
ingroup = 0;
#ifdef __APPLE__
strlcpy(username, u->ut_user, sizeof(username));
#else
strlcpy(username, utmp.ut_name, sizeof(utmp.ut_name));
#endif
pw = getpwnam(username);
if (!pw)
continue;
for (g = grouplist; g && ingroup == 0; g = g->next) {
if (g->gid == (gid_t)-1)
continue;
if (g->gid == pw->pw_gid)
ingroup = 1;
else if ((grp = getgrgid(g->gid)) != NULL) {
for (np = grp->gr_mem; *np; np++) {
if (strcmp(*np, username) == 0) {
ingroup = 1;
break;
}
}
}
}
if (ingroup == 0)
continue;
}
#ifdef __APPLE__
strlcpy(line, u->ut_line, sizeof(line));
#else
strncpy(line, utmp.ut_line, sizeof(utmp.ut_line));
line[sizeof(utmp.ut_line)] = '\0';
#endif
if ((p = ttymsg(&iov, 1, line, 60*5)) != NULL)
warnx("%s", p);
}
exit(0);
}
static void
usage()
{
(void)fprintf(stderr, "usage: wall [-g group] [file]\n");
exit(1);
}
