mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-11-27 05:46:36 +08:00
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* RCSID("$Id: nchan.h,v 1.1 1999/10/27 03:42:44 damien Exp $"); */
|
|
|
|
#ifndef NCHAN_H
|
|
#define NCHAN_H
|
|
|
|
/*
|
|
* SSH Protocol 1.5 aka New Channel Protocol
|
|
* Thanks to Martina, Axel and everyone who left Erlangen, leaving me bored.
|
|
* Written by Markus Friedl in October 1999
|
|
*
|
|
* Protocol versions 1.3 and 1.5 differ in the handshake protocol used for the
|
|
* tear down of channels:
|
|
*
|
|
* 1.3: strict request-ack-protocol:
|
|
* CLOSE ->
|
|
* <- CLOSE_CONFIRM
|
|
*
|
|
* 1.5: uses variations of:
|
|
* IEOF ->
|
|
* <- OCLOSE
|
|
* <- IEOF
|
|
* OCLOSE ->
|
|
* i.e. both sides have to close the channel
|
|
*
|
|
* See the debugging output from 'ssh -v' and 'sshd -d' of
|
|
* ssh-1.2.27 as an example.
|
|
*
|
|
*/
|
|
|
|
/* ssh-proto-1.5 overloads prot-1.3-message-types */
|
|
#define SSH_MSG_CHANNEL_INPUT_EOF SSH_MSG_CHANNEL_CLOSE
|
|
#define SSH_MSG_CHANNEL_OUTPUT_CLOSE SSH_MSG_CHANNEL_CLOSE_CONFIRMATION
|
|
|
|
/* possible input states */
|
|
#define CHAN_INPUT_OPEN 0x01
|
|
#define CHAN_INPUT_WAIT_DRAIN 0x02
|
|
#define CHAN_INPUT_WAIT_OCLOSE 0x04
|
|
#define CHAN_INPUT_CLOSED 0x08
|
|
|
|
/* possible output states */
|
|
#define CHAN_OUTPUT_OPEN 0x10
|
|
#define CHAN_OUTPUT_WAIT_DRAIN 0x20
|
|
#define CHAN_OUTPUT_WAIT_IEOF 0x40
|
|
#define CHAN_OUTPUT_CLOSED 0x80
|
|
|
|
/* EVENTS for the input state */
|
|
void chan_rcvd_oclose(Channel *c);
|
|
void chan_read_failed(Channel *c);
|
|
void chan_ibuf_empty(Channel *c);
|
|
|
|
/* EVENTS for the output state */
|
|
void chan_rcvd_ieof(Channel *c);
|
|
void chan_write_failed(Channel *c);
|
|
void chan_obuf_empty(Channel *c);
|
|
|
|
void chan_init_iostates(Channel *c);
|
|
#endif
|