static void
telnet_interactive(void *vp)
{
telnet_t *tp = vp;
char *cp;
if (!(tp->t_flags & TF_ATTACH)) {
tp->task = NULL;
telnet_shutdown(tp->t_nd, tp);
return;
}
if (tp->t_flags & TF_DISCONNECT) {
tp->t_flags &= ~TF_DISCONNECT;
if (tp->t_ip)
remove_interactive(tp->t_ip, 1);
}
if (!(tp->t_flags & TF_ATTACH)) {
tp->task = NULL;
telnet_shutdown(tp->t_nd, tp);
return;
}
if (tp->t_flags & TF_OVFLOUTQ) {
tp->task = NULL;
return;
}
if (tp->t_flags & TF_INPUT) {
tp->t_flags &= ~TF_INPUT;
if (nq_full(tp->t_canq))
cp = "";
else
cp = (char *)nq_rptr(tp->t_canq);
interactive_input(tp->t_ip, cp);
nq_init(tp->t_canq);
}
if (!(tp->t_flags & TF_ATTACH)) {
tp->task = NULL;
telnet_shutdown(tp->t_nd, tp);
return;
}
tp->t_flags &= ~TF_GA;
telnet_readbytes(tp->t_nd, tp);
telnet_input(tp);
if (!(tp->t_flags & TF_ATTACH)) {
tp->task = NULL;
telnet_shutdown(tp->t_nd, tp);
return;
}
if (tp->t_flags & (TF_INPUT|TF_DISCONNECT)) {
reschedule_task(tp->task);
return;
}
tp->task = NULL;
nd_enable(tp->t_nd, ND_R);
}
/*
* Telnet session cleanup processing.
*/
static void
telnet_cleanup(ndesc_t *nd, telnet_t *tp)
{
if ((tp->t_flags & TF_ATTACH) == 0)
{
telnet_shutdown(nd, tp);
}
else
{
telnet_input(nd, tp);
}
}
/*
* Accept a new Telnet connection.
*/
static void
telnet_accept(void *vp)
{
ndesc_t *nd = vp;
int addrlen, s;
struct sockaddr_in addr;
telnet_t *tp;
void *ip;
nd_enable(nd, ND_R);
addrlen = sizeof (addr);
s = accept(nd_fd(nd), (struct sockaddr *)&addr, &addrlen);
if (s == -1)
{
switch (errno)
{
default:
warning("telnet_accept: accept() errno = %d. ip: %s\n",
errno, inet_ntoa(addr.sin_addr));
case EWOULDBLOCK:
case EINTR:
case EPROTO:
return;
}
}
enable_nbio(s);
enable_oobinline(s);
enable_nodelay(s);
enable_lowdelay(s);
enable_keepalive(s);
set_rcvsize(s, TELNET_RCVBUF_SIZE);
set_sndsize(s, TELNET_SNDBUF_SIZE);
tp = telnet_alloc();
tp->t_nd = nd_attach(s, telnet_read, telnet_write, telnet_exception,
NULL, telnet_shutdown, tp);
ip = (void *)new_player(tp, &addr, addrlen);
if (ip == NULL)
{
telnet_shutdown(tp->t_nd, tp);
}
else
{
telnet_attach(tp, ip);
nd_enable(tp->t_nd, ND_R | ND_X);
}
}
