chan_force_close()

[Nicolas Williams]

How's this for nchan.c? I'm testing it with forkoff(X, 1) and -ddd/-vvv,
with and without -f, -f -f, and it's working just fine.

Nico

static
void
chan_force_close1(Channel *c)
{
	error("channel %d: dont know how to force an ssh1 channel closed");
}

static
void
chan_force_close2(Channel *c)
{
	if (c->ostate == CHAN_OUTPUT_CLOSED &&
	   c->istate == CHAN_INPUT_CLOSED &&
	   c->flags & CHAN_CLOSE_SENT)
		return;

	debug("channel %d: force close", c->self);

	c->ostate = CHAN_OUTPUT_CLOSED;
	c->istate = CHAN_INPUT_CLOSED;

	if (buffer_len(&c->output))
		buffer_consume(&c->output, buffer_len(&c->output));

	if (c->flags & CHAN_CLOSE_SENT)
		return;

	packet_start(SSH2_MSG_CHANNEL_CLOSE);
	packet_put_int(c->remote_id);
	packet_send();
	c->flags |= CHAN_CLOSE_SENT;

	chan_shutdown_read(c);
	chan_shutdown_write(c);
	channel_close_fds(c);
}

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