-/* $OpenBSD: channels.h,v 1.67 2002/03/26 22:50:39 markus Exp $ */
+/* $OpenBSD: channels.h,v 1.89 2007/06/11 09:14:00 markus Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
#ifndef CHANNEL_H
#define CHANNEL_H
-#include "buffer.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. */
typedef struct Channel Channel;
typedef void channel_callback_fn(int, void *);
-typedef int channel_filter_fn(struct Channel *, char *, int);
+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 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
int host_port; /* remote port to connect for forwards */
char *remote_name; /* remote hostname */
- int remote_window;
- int remote_maxpacket;
- int local_window;
- int local_window_max;
- int local_consumed;
- int local_maxpacket;
+ 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 dynamic_window;
int extended_usage;
int single_connection;
+ u_int tcpwinsz;
char *ctype; /* type */
/* callback */
channel_callback_fn *confirm;
+ void *confirm_ctx;
channel_callback_fn *detach_user;
+ int detach_close;
/* filter */
- channel_filter_fn *input_filter;
+ channel_infilter_fn *input_filter;
+ channel_outfilter_fn *output_filter;
+
+ int datagram; /* keep boundaries */
};
#define CHAN_EXTENDED_IGNORE 0
/* 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)
#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 && \
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))) || \
+ 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, int, int, int, char *, 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_send_open(int);
void channel_request_start(int, char *, int);
-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_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 */
/* file descriptor handling (read/write) */
-void channel_prepare_select(fd_set **, fd_set **, int *, int*, int);
+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_output_poll(void);
int channel_not_very_much_buffered_data(void);
void channel_close_all(void);
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_input_port_forward_request(int, int);
+void channel_clear_adm_permitted_opens(void);
+int channel_input_port_forward_request(int, int, int, int);
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_setup_local_fwd_listener(u_short, const char *, u_short, int);
-int channel_setup_remote_fwd_listener(const char *, u_short, int);
+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, int, int);
+void channel_request_rforward_cancel(const char *host, u_short port);
+int channel_setup_remote_fwd_listener(const char *, u_short, int, int, 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);
+int x11_create_display_inet(int, int, int, u_int *, int **, int, int);
void x11_input_open(int, u_int32_t, void *);
-void x11_request_forwarding_with_spoofing(int, const char *, const char *);
+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);
-char *auth_get_socket_name(void);
-void auth_sock_cleanup_proc(void *);
-int auth_input_request_forwarding(struct passwd *);
-void auth_input_open_request(int, u_int32_t, void *);
/* channel close */
andersk / gssapi-openssh.git / blobdiff