X-Git-Url: http://andersk.mit.edu/gitweb/gssapi-openssh.git/blobdiff_plain/510132b69d4fdceca750f6de39b2be84c49006c8..9c0efabdc5f81e0d6ddd027ffb91e9e7ef57993a:/openssh/channels.h diff --git a/openssh/channels.h b/openssh/channels.h index bd31c45..91bc0ae 100644 --- a/openssh/channels.h +++ b/openssh/channels.h @@ -1,4 +1,4 @@ -/* $OpenBSD: channels.h,v 1.67 2002/03/26 22:50:39 markus Exp $ */ +/* $OpenBSD: channels.h,v 1.88 2006/08/03 03:34:42 deraadt Exp $ */ /* * Author: Tatu Ylonen @@ -38,8 +38,6 @@ #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. */ @@ -63,7 +61,8 @@ struct Channel; 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 */ @@ -76,7 +75,10 @@ struct Channel { 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 @@ -90,23 +92,30 @@ struct Channel { 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 @@ -114,12 +123,17 @@ struct Channel { #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) +#define CHAN_SES_PACKET_DEFAULT (32*1024) +#define CHAN_SES_WINDOW_DEFAULT_HPN (160*CHAN_TCP_PACKET_DEFAULT) +#define CHAN_SES_WINDOW_DEFAULT (4*CHAN_SES_PACKET_DEFAULT) + +#define CHAN_TCP_PACKET_DEFAULT (32*1024) +#define CHAN_TCP_WINDOW_DEFAULT_HPN (160*CHAN_TCP_PACKET_DEFAULT) +#define CHAN_TCP_WINDOW_DEFAULT (4*CHAN_TCP_PACKET_DEFAULT) + +#define CHAN_X11_PACKET_DEFAULT (16*1024) +#define CHAN_X11_WINDOW_DEFAULT_HPN (4*CHAN_X11_PACKET_DEFAULT) +#define CHAN_X11_WINDOW_DEFAULT (4*CHAN_X11_PACKET_DEFAULT) /* possible input states */ #define CHAN_INPUT_OPEN 0 @@ -138,6 +152,8 @@ struct Channel { #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 && \ @@ -145,13 +161,14 @@ struct Channel { 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); @@ -159,11 +176,12 @@ 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 *); -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 */ @@ -180,7 +198,7 @@ void channel_input_window_adjust(int, u_int32_t, void *); /* 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); @@ -194,29 +212,32 @@ int channel_find_open(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 */