int
main(int argc, char **argv) {
extern int optind;
int ch;
struct iovec iov;
struct utmp *utmpptr;
char *p;
char line[sizeof(utmpptr->ut_line) + 1];
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
while ((ch = getopt(argc, argv, "n")) != -1) {
switch (ch) {
case 'n':
if (geteuid() == 0)
nobanner = 1;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc > 1)
usage();
makemsg(*argv);
setutent();
iov.iov_base = mbuf;
iov.iov_len = mbufsize;
while((utmpptr = getutent())) {
if (!utmpptr->ut_name[0] ||
!strncmp(utmpptr->ut_name, IGNOREUSER,
sizeof(utmpptr->ut_name)))
continue;
#ifdef USER_PROCESS
if (utmpptr->ut_type != USER_PROCESS)
continue;
#endif
/* Joey Hess reports that use-sessreg in /etc/X11/wdm/
produces ut_line entries like :0, and a write
to /dev/:0 fails. */
if (utmpptr->ut_line[0] == ':')
continue;
xstrncpy(line, utmpptr->ut_line, sizeof(utmpptr->ut_line));
if ((p = ttymsg(&iov, 1, line, 60*5)) != NULL)
warnx("%s", p);
}
endutent();
exit(EXIT_SUCCESS);
}
int
main(int argc, char **argv) {
int ch;
struct iovec iov;
struct utmp *utmpptr;
char *p;
char line[sizeof(utmpptr->ut_line) + 1];
int print_banner = TRUE;
char *mbuf;
size_t mbufsize;
unsigned timeout = WRITE_TIME_OUT;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
static const struct option longopts[] = {
{ "nobanner", no_argument, 0, 'n' },
{ "timeout", required_argument, 0, 't' },
{ "version", no_argument, 0, 'V' },
{ "help", no_argument, 0, 'h' },
{ NULL, 0, 0, 0 }
};
while ((ch = getopt_long(argc, argv, "nt:Vh", longopts, NULL)) != -1) {
switch (ch) {
case 'n':
if (geteuid() == 0)
print_banner = FALSE;
else
warnx(_("--nobanner is available only for root"));
break;
case 't':
timeout = strtou32_or_err(optarg, _("invalid timeout argument"));
if (timeout < 1)
errx(EXIT_FAILURE, _("invalid timeout argument: %s"), optarg);
break;
case 'V':
printf(_("%s from %s\n"), program_invocation_short_name,
PACKAGE_STRING);
exit(EXIT_SUCCESS);
case 'h':
usage(stdout);
default:
usage(stderr);
}
}
argc -= optind;
argv += optind;
if (argc > 1)
usage(stderr);
mbuf = makemsg(*argv, &mbufsize, print_banner);
iov.iov_base = mbuf;
iov.iov_len = mbufsize;
while((utmpptr = getutent())) {
if (!utmpptr->ut_name[0] ||
!strncmp(utmpptr->ut_name, IGNOREUSER,
sizeof(utmpptr->ut_name)))
continue;
#ifdef USER_PROCESS
if (utmpptr->ut_type != USER_PROCESS)
continue;
#endif
/* Joey Hess reports that use-sessreg in /etc/X11/wdm/
produces ut_line entries like :0, and a write
to /dev/:0 fails. */
if (utmpptr->ut_line[0] == ':')
continue;
xstrncpy(line, utmpptr->ut_line, sizeof(utmpptr->ut_line));
if ((p = ttymsg(&iov, 1, line, timeout)) != NULL)
warnx("%s", p);
}
endutent();
free(mbuf);
exit(EXIT_SUCCESS);
}
int main(int argc, char **argv)
{
int ch;
struct iovec iov;
struct utmpx *utmpptr;
char *p;
char line[sizeof(utmpptr->ut_line) + 1];
int print_banner = TRUE;
struct group_workspace *group_buf = NULL;
char *mbuf, *fname = NULL;
size_t mbufsize;
unsigned timeout = WRITE_TIME_OUT;
char **mvec = NULL;
int mvecsz = 0;
static const struct option longopts[] = {
{ "nobanner", no_argument, NULL, 'n' },
{ "timeout", required_argument, NULL, 't' },
{ "group", required_argument, NULL, 'g' },
{ "version", no_argument, NULL, 'V' },
{ "help", no_argument, NULL, 'h' },
{ NULL, 0, NULL, 0 }
};
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
while ((ch = getopt_long(argc, argv, "nt:g:Vh", longopts, NULL)) != -1) {
switch (ch) {
case 'n':
if (geteuid() == 0)
print_banner = FALSE;
else
warnx(_("--nobanner is available only for root"));
break;
case 't':
timeout = strtou32_or_err(optarg, _("invalid timeout argument"));
if (timeout < 1)
errx(EXIT_FAILURE, _("invalid timeout argument: %s"), optarg);
break;
case 'g':
group_buf = init_group_workspace(optarg);
break;
case 'V':
printf(UTIL_LINUX_VERSION);
exit(EXIT_SUCCESS);
case 'h':
usage();
default:
errtryhelp(EXIT_FAILURE);
}
}
argc -= optind;
argv += optind;
if (argc == 1 && access(argv[0], F_OK) == 0)
fname = argv[0];
else if (argc >= 1) {
mvec = argv;
mvecsz = argc;
}
mbuf = makemsg(fname, mvec, mvecsz, &mbufsize, print_banner);
iov.iov_base = mbuf;
iov.iov_len = mbufsize;
while((utmpptr = getutxent())) {
if (!utmpptr->ut_user[0])
continue;
#ifdef USER_PROCESS
if (utmpptr->ut_type != USER_PROCESS)
continue;
#endif
/* Joey Hess reports that use-sessreg in /etc/X11/wdm/
produces ut_line entries like :0, and a write
to /dev/:0 fails. */
if (utmpptr->ut_line[0] == ':')
continue;
if (group_buf && !is_gr_member(utmpptr->ut_user, group_buf))
continue;
mem2strcpy(line, utmpptr->ut_line, sizeof(utmpptr->ut_line), sizeof(line));
if ((p = ttymsg(&iov, 1, line, timeout)) != NULL)
warnx("%s", p);
}
endutxent();
free(mbuf);
free_group_workspace(group_buf);
exit(EXIT_SUCCESS);
}
int
main(int argc, char *argv[])
{
struct iovec iov;
struct utmpentry *ep;
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;
getutentries(NULL, &ep);
/* NOSTRICT */
for (; ep; ep = ep->next) {
if (grouplist) {
ingroup = 0;
pw = getpwnam(ep->name);
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, ep->name) == 0) {
ingroup = 1;
break;
}
}
}
}
if (ingroup == 0)
continue;
}
/* skip [xgk]dm/xserver entries (":0", ":1", etc.) */
if (ep->line[0] == ':' && isdigit((unsigned char)ep->line[1]))
continue;
if ((p = ttymsg(&iov, 1, ep->line, 60*5)) != NULL)
warnx("%s", p);
}
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);
}
/*
* Build a block of characters containing the message.
* It is sent blank filled and in a single block to
* try to keep the message in one piece if the recipient
* in vi at the time
*/
int
print_mesg(const char *tty, CTL_MSG *request, const char *remote_machine)
{
struct timeval now;
time_t clock_sec;
struct tm *localclock;
struct iovec iovec;
char line_buf[N_LINES][N_CHARS];
int sizes[N_LINES];
char big_buf[N_LINES*N_CHARS];
char *bptr, *lptr, *vis_user;
int i, j, max_size;
i = 0;
max_size = 0;
gettimeofday(&now, NULL);
clock_sec = now.tv_sec;
localclock = localtime(&clock_sec);
(void)snprintf(line_buf[i], N_CHARS, " ");
sizes[i] = strlen(line_buf[i]);
max_size = max(max_size, sizes[i]);
i++;
(void)snprintf(line_buf[i], N_CHARS,
"Message from Talk_Daemon@%s at %d:%02d on %d/%.2d/%.2d ...",
hostname, localclock->tm_hour , localclock->tm_min,
localclock->tm_year + 1900, localclock->tm_mon + 1,
localclock->tm_mday);
sizes[i] = strlen(line_buf[i]);
max_size = max(max_size, sizes[i]);
i++;
vis_user = malloc(strlen(request->l_name) * 4 + 1);
strvis(vis_user, request->l_name, VIS_CSTYLE);
(void)snprintf(line_buf[i], N_CHARS,
"talk: connection requested by %s@%s", vis_user, remote_machine);
sizes[i] = strlen(line_buf[i]);
max_size = max(max_size, sizes[i]);
i++;
(void)snprintf(line_buf[i], N_CHARS, "talk: respond with: talk %s@%s",
vis_user, remote_machine);
sizes[i] = strlen(line_buf[i]);
max_size = max(max_size, sizes[i]);
i++;
(void)snprintf(line_buf[i], N_CHARS, " ");
sizes[i] = strlen(line_buf[i]);
max_size = max(max_size, sizes[i]);
bptr = big_buf;
*bptr++ = '\007'; /* send something to wake them up */
*bptr++ = '\r'; /* add a \r in case of raw mode */
*bptr++ = '\n';
for (i = 0; i < N_LINES; i++) {
/* copy the line into the big buffer */
lptr = line_buf[i];
while (*lptr != '\0')
*(bptr++) = *(lptr++);
/* pad out the rest of the lines with blanks */
for (j = sizes[i]; j < max_size + 2; j++)
*(bptr++) = ' ';
*(bptr++) = '\r'; /* add a \r in case of raw mode */
*(bptr++) = '\n';
}
*bptr = '\0';
iovec.iov_base = big_buf;
iovec.iov_len = bptr - big_buf;
/*
* we choose a timeout of RING_WAIT-5 seconds so that we don't
* stack up processes trying to write messages to a tty
* that is permanently blocked.
*/
if (ttymsg(&iovec, 1, tty, RING_WAIT - 5) != NULL)
return (FAILED);
return (SUCCESS);
}
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);
}