+/* $OpenBSD: channels.h,v 1.67 2002/03/26 22:50:39 markus Exp $ */
+
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-/* RCSID("$OpenBSD: channels.h,v 1.59 2002/01/14 13:57:03 markus Exp $"); */
#ifndef CHANNEL_H
#define CHANNEL_H
char *ctype; /* type */
/* callback */
- channel_callback_fn *cb_fn;
- void *cb_arg;
- int cb_event;
+ channel_callback_fn *confirm;
channel_callback_fn *detach_user;
/* filter */
#define CHAN_EXTENDED_WRITE 2
/* default window/packet sizes for tcp/x11-fwd-channel */
-#define CHAN_SES_WINDOW_DEFAULT (32*1024)
-#define CHAN_SES_PACKET_DEFAULT (CHAN_SES_WINDOW_DEFAULT/2)
-#define CHAN_TCP_WINDOW_DEFAULT (32*1024)
-#define CHAN_TCP_PACKET_DEFAULT (CHAN_TCP_WINDOW_DEFAULT/2)
-#define CHAN_X11_WINDOW_DEFAULT (4*1024)
-#define CHAN_X11_PACKET_DEFAULT (CHAN_X11_WINDOW_DEFAULT/2)
+#define CHAN_SES_PACKET_DEFAULT (32*1024)
+#define CHAN_SES_WINDOW_DEFAULT (4*CHAN_SES_PACKET_DEFAULT)
+#define CHAN_TCP_PACKET_DEFAULT (32*1024)
+#define CHAN_TCP_WINDOW_DEFAULT (4*CHAN_TCP_PACKET_DEFAULT)
+#define CHAN_X11_PACKET_DEFAULT (16*1024)
+#define CHAN_X11_WINDOW_DEFAULT (4*CHAN_X11_PACKET_DEFAULT)
/* possible input states */
#define CHAN_INPUT_OPEN 0
#define CHAN_CLOSE_SENT 0x01
#define CHAN_CLOSE_RCVD 0x02
+#define CHAN_EOF_SENT 0x04
+#define CHAN_EOF_RCVD 0x08
+
+/* check whether 'efd' is still in use */
+#define CHANNEL_EFD_INPUT_ACTIVE(c) \
+ (compat20 && c->extended_usage == CHAN_EXTENDED_READ && \
+ (c->efd != -1 || \
+ buffer_len(&c->extended) > 0))
+#define CHANNEL_EFD_OUTPUT_ACTIVE(c) \
+ (compat20 && c->extended_usage == CHAN_EXTENDED_WRITE && \
+ ((c->efd != -1 && !(c->flags & (CHAN_EOF_RCVD|CHAN_CLOSE_RCVD))) || \
+ buffer_len(&c->extended) > 0))
/* channel management */
Channel *channel_lookup(int);
Channel *channel_new(char *, int, int, int, int, int, int, int, char *, int);
-void channel_set_fds(int, int, int, int, int, int);
+void channel_set_fds(int, int, int, int, int, int, u_int);
void channel_free(Channel *);
void channel_free_all(void);
void channel_stop_listening(void);
void channel_send_open(int);
-void channel_request(int, char *, int);
void channel_request_start(int, char *, int);
-void channel_register_callback(int, int mtype, channel_callback_fn *, void *);
void channel_register_cleanup(int, channel_callback_fn *);
+void channel_register_confirm(int, channel_callback_fn *);
void channel_register_filter(int, channel_filter_fn *);
void channel_cancel_cleanup(int);
int channel_close_fd(int *);
/* protocol handler */
-void channel_input_channel_request(int, u_int32_t, void *);
void channel_input_close(int, u_int32_t, void *);
void channel_input_close_confirmation(int, u_int32_t, void *);
void channel_input_data(int, u_int32_t, void *);
int channel_connect_to(const char *, u_short);
int channel_connect_by_listen_address(u_short);
void channel_request_remote_forwarding(u_short, const char *, u_short);
-int channel_request_local_forwarding(u_short, const char *, u_short, int);
-int
-channel_request_forwarding(const char *, u_short, const char *, u_short, int,
- int);
+int channel_setup_local_fwd_listener(u_short, const char *, u_short, int);
+int channel_setup_remote_fwd_listener(const char *, u_short, int);
/* x11 forwarding */