/*
* the same for SSH2
*/
static void
chan_rcvd_close2(Channel *c)
{
debug("channel %d: rcvd close", c->self);
if (c->flags & CHAN_CLOSE_RCVD)
error("channel %d: protocol error: close rcvd twice", c->self);
c->flags |= CHAN_CLOSE_RCVD;
if (c->type == SSH_CHANNEL_LARVAL) {
/* tear down larval channels immediately */
chan_set_ostate(c, CHAN_OUTPUT_CLOSED);
chan_set_istate(c, CHAN_INPUT_CLOSED);
return;
}
switch (c->ostate) {
case CHAN_OUTPUT_OPEN:
/*
* wait until a data from the channel is consumed if a CLOSE
* is received
*/
chan_set_ostate(c, CHAN_OUTPUT_WAIT_DRAIN);
break;
}
switch (c->istate) {
case CHAN_INPUT_OPEN:
chan_shutdown_read(c);
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
case CHAN_INPUT_WAIT_DRAIN:
chan_send_eof2(c);
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
}
}
void
chan_rcvd_eow(Channel *c)
{
debug2("channel %d: rcvd eow", c->self);
switch (c->istate) {
case CHAN_INPUT_OPEN:
chan_shutdown_read(c);
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
}
}
void
chan_read_failed(Channel *c)
{
debug2("channel %d: read failed", c->self);
switch (c->istate) {
case CHAN_INPUT_OPEN:
chan_shutdown_read(c);
chan_set_istate(c, CHAN_INPUT_WAIT_DRAIN);
break;
default:
error("channel %d: chan_read_failed for istate %d",
c->self, c->istate);
break;
}
}
static void
chan_rcvd_oclose1(Channel *c)
{
debug2("channel %d: rcvd oclose", c->self);
/*
* FIXME. This function forces stopping all socket threads
* at next select. This workaround nivelate problem with
* infinite hangs up in below scenario:
*
* a) read select start.
* b) write select start.
* c) read select ends: SSH2_MSG_CHANNEL_CLOSE received.
* d) close input channel.
* e) now write select may never ends.
*/
#ifdef WIN32_FIXME
StopSocketThreads();
#endif
switch (c->istate) {
case CHAN_INPUT_WAIT_OCLOSE:
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
case CHAN_INPUT_OPEN:
chan_shutdown_read(c);
chan_send_ieof1(c);
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
case CHAN_INPUT_WAIT_DRAIN:
/* both local read_failed and remote write_failed */
chan_send_ieof1(c);
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
default:
error("channel %d: protocol error: rcvd_oclose for istate %d",
c->self, c->istate);
return;
}
}
static void
chan_rcvd_oclose1(Channel *c)
{
debug2("channel %d: rcvd oclose", c->self);
switch (c->istate) {
case CHAN_INPUT_WAIT_OCLOSE:
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
case CHAN_INPUT_OPEN:
chan_shutdown_read(c);
chan_send_ieof1(c);
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
case CHAN_INPUT_WAIT_DRAIN:
/* both local read_failed and remote write_failed */
chan_send_ieof1(c);
chan_set_istate(c, CHAN_INPUT_CLOSED);
break;
default:
error("channel %d: protocol error: rcvd_oclose for istate %d",
c->self, c->istate);
return;
}
}
