int main (int argc, char *argv[])
{
int index;
set_program_name (argv[0]);
iu_argp_init ("talk", program_authors);
argp_parse (&argp, argc, argv, 0, &index, NULL);
argc -= index;
argv += index;
if (argc == 0)
{
printf ("Usage: talk user [ttyname]\n");
exit (-1);
}
if (!isatty (0))
{
printf ("Standard input must be a tty, not a pipe or a file\n");
exit (-1);
}
get_names (argc, argv);
init_display ();
open_ctl ();
open_sockt ();
start_msgs ();
if (!check_local ())
invite_remote ();
end_msgs ();
set_edit_chars ();
talk ();
}
int
main(int argc, char *argv[])
{
if (pledge("stdio rpath inet dns getpw tty", NULL) == -1)
err(1, "pledge");
get_names(argc, argv);
init_display();
open_ctl();
open_sockt();
start_msgs();
if (!check_local())
invite_remote();
end_msgs();
set_edit_chars();
if (his_machine_addr.s_addr == my_machine_addr.s_addr) {
if (pledge("stdio tty", NULL) == -1)
err(1, "pledge");
} else {
if (pledge("stdio inet tty", NULL) == -1)
err(1, "pledge");
}
talk();
return (0);
}
int
invite_remote (void)
{
int new_sockt;
struct itimerval itimer;
CTL_RESPONSE response;
itimer.it_value.tv_sec = RING_WAIT;
itimer.it_value.tv_usec = 0;
itimer.it_interval = itimer.it_value;
if (listen (sockt, 5) != 0)
p_error ("Error on attempt to listen for caller");
msg.addr.sa_family = htons (my_addr.sin_family);
memcpy (msg.addr.sa_data,
((struct sockaddr *) &my_addr)->sa_data,
sizeof ((struct sockaddr *) & my_addr)->sa_data);
msg.id_num = htonl (-1); /* an impossible id_num */
invitation_waiting = 1;
announce_invite ();
/*
* Shut off the automatic messages for a while,
* so we can use the interupt timer to resend the invitation
*/
end_msgs ();
setitimer (ITIMER_REAL, &itimer, (struct itimerval *) 0);
message ("Waiting for your party to respond");
signal (SIGALRM, re_invite);
setjmp (invitebuf);
while ((new_sockt = accept (sockt, 0, 0)) < 0)
{
if (errno == EINTR)
continue;
p_error ("Unable to connect with your party");
}
close (sockt);
sockt = new_sockt;
/*
* Have the daemons delete the invitations now that we
* have connected.
*/
current_state = "Waiting for your party to respond";
start_msgs ();
msg.id_num = htonl (local_id);
ctl_transact (my_machine_addr, msg, DELETE, &response);
msg.id_num = htonl (remote_id);
ctl_transact (his_machine_addr, msg, DELETE, &response);
invitation_waiting = 0;
return 0;
}
int
main(int argc, char **argv)
{
(void) setlocale(LC_CTYPE, "");
get_names(argc, argv);
check_writeable();
init_display();
open_ctl();
open_sockt();
start_msgs();
if (!check_local())
invite_remote();
end_msgs();
set_edit_chars();
talk();
return 0;
}
void
invite_remote(void)
{
int new_sockt;
struct itimerval itimer;
CTL_RESPONSE response;
struct sockaddr rp;
socklen_t rplen = sizeof(struct sockaddr);
struct hostent *rphost;
char rname[STRING_LENGTH];
itimer.it_value.tv_sec = RING_WAIT;
itimer.it_value.tv_usec = 0;
itimer.it_interval = itimer.it_value;
if (listen(sockt, 5) != 0)
quit("Error on attempt to listen for caller", 1);
#ifdef MSG_EOR
/* copy new style sockaddr to old, swap family (short in old) */
msg.addr = *(struct osockaddr *)&my_addr; /* XXX new to old style*/
msg.addr.sa_family = htons(my_addr.sin_family);
#else
msg.addr = *(struct sockaddr *)&my_addr;
#endif
msg.id_num = htonl(-1); /* an impossible id_num */
invitation_waiting = 1;
announce_invite();
/*
* Shut off the automatic messages for a while,
* so we can use the interrupt timer to resend the invitation.
* We no longer turn automatic messages back on to avoid a bonus
* message after we've connected; this is okay even though end_msgs()
* gets called again in main().
*/
end_msgs();
setitimer(ITIMER_REAL, &itimer, NULL);
message("Waiting for your party to respond");
signal(SIGALRM, re_invite);
(void) setjmp(invitebuf);
while ((new_sockt = accept(sockt, &rp, &rplen)) == -1) {
if (errno == EINTR || errno == EWOULDBLOCK ||
errno == ECONNABORTED)
continue;
quit("Unable to connect with your party", 1);
}
close(sockt);
sockt = new_sockt;
/*
* Have the daemons delete the invitations now that we
* have connected.
*/
msg.id_num = htonl(local_id);
ctl_transact(my_machine_addr, msg, DELETE, &response);
msg.id_num = htonl(remote_id);
ctl_transact(his_machine_addr, msg, DELETE, &response);
invitation_waiting = 0;
/*
* Check to see if the other guy is coming from the machine
* we expect.
*/
if (his_machine_addr.s_addr !=
((struct sockaddr_in *)&rp)->sin_addr.s_addr) {
rphost = gethostbyaddr((char *) &((struct sockaddr_in
*)&rp)->sin_addr, sizeof(struct in_addr), AF_INET);
if (rphost)
snprintf(rname, STRING_LENGTH,
"Answering talk request from %s@%s", msg.r_name,
rphost->h_name);
else
snprintf(rname, STRING_LENGTH,
"Answering talk request from %s@%s", msg.r_name,
inet_ntoa(((struct sockaddr_in *)&rp)->sin_addr));
message(rname);
}
}
