diff options
Diffstat (limited to 'crypto/openssh/channels.h')
| -rw-r--r-- | crypto/openssh/channels.h | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/crypto/openssh/channels.h b/crypto/openssh/channels.h deleted file mode 100644 index 2674f09..0000000 --- a/crypto/openssh/channels.h +++ /dev/null @@ -1,250 +0,0 @@ -/* $OpenBSD: channels.h,v 1.88 2006/08/03 03:34:42 deraadt Exp $ */ - -/* - * Author: Tatu Ylonen <ylo@cs.hut.fi> - * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland - * All rights reserved - * - * As far as I am concerned, the code I have written for this software - * can be used freely for any purpose. Any derived versions of this - * software must be clearly marked as such, and if the derived work is - * incompatible with the protocol description in the RFC file, it must be - * called by a name other than "ssh" or "Secure Shell". - */ -/* - * Copyright (c) 1999, 2000, 2001, 2002 Markus Friedl. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef CHANNEL_H -#define CHANNEL_H - -/* Definitions for channel types. */ -#define SSH_CHANNEL_X11_LISTENER 1 /* Listening for inet X11 conn. */ -#define SSH_CHANNEL_PORT_LISTENER 2 /* Listening on a port. */ -#define SSH_CHANNEL_OPENING 3 /* waiting for confirmation */ -#define SSH_CHANNEL_OPEN 4 /* normal open two-way channel */ -#define SSH_CHANNEL_CLOSED 5 /* waiting for close confirmation */ -#define SSH_CHANNEL_AUTH_SOCKET 6 /* authentication socket */ -#define SSH_CHANNEL_X11_OPEN 7 /* reading first X11 packet */ -#define SSH_CHANNEL_INPUT_DRAINING 8 /* sending remaining data to conn */ -#define SSH_CHANNEL_OUTPUT_DRAINING 9 /* sending remaining data to app */ -#define SSH_CHANNEL_LARVAL 10 /* larval session */ -#define SSH_CHANNEL_RPORT_LISTENER 11 /* Listening to a R-style port */ -#define SSH_CHANNEL_CONNECTING 12 -#define SSH_CHANNEL_DYNAMIC 13 -#define SSH_CHANNEL_ZOMBIE 14 /* Almost dead. */ -#define SSH_CHANNEL_MAX_TYPE 15 - -#define SSH_CHANNEL_PATH_LEN 256 - -struct Channel; -typedef struct Channel Channel; - -typedef void channel_callback_fn(int, void *); -typedef int channel_infilter_fn(struct Channel *, char *, int); -typedef u_char *channel_outfilter_fn(struct Channel *, u_char **, u_int *); - -struct Channel { - int type; /* channel type/state */ - int self; /* my own channel identifier */ - int remote_id; /* channel identifier for remote peer */ - u_int istate; /* input from channel (state of receive half) */ - u_int ostate; /* output to channel (state of transmit half) */ - int flags; /* close sent/rcvd */ - int rfd; /* read fd */ - int wfd; /* write fd */ - int efd; /* extended fd */ - int sock; /* sock fd */ - int ctl_fd; /* control fd (client sharing) */ - int isatty; /* rfd is a tty */ - int wfd_isatty; /* wfd is a tty */ - int client_tty; /* (client) TTY has been requested */ - int force_drain; /* force close on iEOF */ - int delayed; /* fdset hack */ - Buffer input; /* data read from socket, to be sent over - * encrypted connection */ - Buffer output; /* data received over encrypted connection for - * send on socket */ - Buffer extended; - char path[SSH_CHANNEL_PATH_LEN]; - /* path for unix domain sockets, or host name for forwards */ - int listening_port; /* port being listened for forwards */ - int host_port; /* remote port to connect for forwards */ - char *remote_name; /* remote hostname */ - - u_int remote_window; - u_int remote_maxpacket; - u_int local_window; - u_int local_window_max; - u_int local_consumed; - u_int local_maxpacket; - int extended_usage; - int single_connection; - - char *ctype; /* type */ - - /* callback */ - channel_callback_fn *confirm; - void *confirm_ctx; - channel_callback_fn *detach_user; - int detach_close; - - /* filter */ - channel_infilter_fn *input_filter; - channel_outfilter_fn *output_filter; - - int datagram; /* keep boundaries */ -}; - -#define CHAN_EXTENDED_IGNORE 0 -#define CHAN_EXTENDED_READ 1 -#define CHAN_EXTENDED_WRITE 2 - -/* default window/packet sizes for tcp/x11-fwd-channel */ -#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_INPUT_WAIT_DRAIN 1 -#define CHAN_INPUT_WAIT_OCLOSE 2 -#define CHAN_INPUT_CLOSED 3 - -/* possible output states */ -#define CHAN_OUTPUT_OPEN 0 -#define CHAN_OUTPUT_WAIT_DRAIN 1 -#define CHAN_OUTPUT_WAIT_IEOF 2 -#define CHAN_OUTPUT_CLOSED 3 - -#define CHAN_CLOSE_SENT 0x01 -#define CHAN_CLOSE_RCVD 0x02 -#define CHAN_EOF_SENT 0x04 -#define CHAN_EOF_RCVD 0x08 - -#define CHAN_RBUF 16*1024 - -/* 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_by_id(int); -Channel *channel_lookup(int); -Channel *channel_new(char *, int, int, int, int, u_int, u_int, int, char *, 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_start(int, char *, int); -void channel_register_cleanup(int, channel_callback_fn *, int); -void channel_register_confirm(int, channel_callback_fn *, void *); -void channel_register_filter(int, channel_infilter_fn *, channel_outfilter_fn *); -void channel_cancel_cleanup(int); -int channel_close_fd(int *); -void channel_send_window_changes(void); - -/* protocol handler */ - -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 *); -void channel_input_extended_data(int, u_int32_t, void *); -void channel_input_ieof(int, u_int32_t, void *); -void channel_input_oclose(int, u_int32_t, void *); -void channel_input_open_confirmation(int, u_int32_t, void *); -void channel_input_open_failure(int, u_int32_t, void *); -void channel_input_port_open(int, u_int32_t, void *); -void channel_input_window_adjust(int, u_int32_t, void *); - -/* file descriptor handling (read/write) */ - -void channel_prepare_select(fd_set **, fd_set **, int *, u_int*, int); -void channel_after_select(fd_set *, fd_set *); -void channel_output_poll(void); - -int channel_not_very_much_buffered_data(void); -void channel_close_all(void); -int channel_still_open(void); -char *channel_open_message(void); -int channel_find_open(void); - -/* tcp forwarding */ -void channel_set_af(int af); -void channel_permit_all_opens(void); -void channel_add_permitted_opens(char *, int); -int channel_add_adm_permitted_opens(char *, int); -void channel_clear_permitted_opens(void); -void channel_clear_adm_permitted_opens(void); -int channel_input_port_forward_request(int, int); -int channel_connect_to(const char *, u_short); -int channel_connect_by_listen_address(u_short); -int channel_request_remote_forwarding(const char *, u_short, - const char *, u_short); -int channel_setup_local_fwd_listener(const char *, u_short, - const char *, u_short, int); -void channel_request_rforward_cancel(const char *host, u_short port); -int channel_setup_remote_fwd_listener(const char *, u_short, int); -int channel_cancel_rport_listener(const char *, u_short); - -/* x11 forwarding */ - -int x11_connect_display(void); -int x11_create_display_inet(int, int, int, u_int *, int **); -void x11_input_open(int, u_int32_t, void *); -void x11_request_forwarding_with_spoofing(int, const char *, const char *, - const char *); -void deny_input_open(int, u_int32_t, void *); - -/* agent forwarding */ - -void auth_request_forwarding(void); - -/* channel close */ - -int chan_is_dead(Channel *, int); -void chan_mark_dead(Channel *); - -/* channel events */ - -void chan_rcvd_oclose(Channel *); -void chan_read_failed(Channel *); -void chan_ibuf_empty(Channel *); - -void chan_rcvd_ieof(Channel *); -void chan_write_failed(Channel *); -void chan_obuf_empty(Channel *); - -#endif |
