-/* RCSID("$Id$"); */
+/*
+ * 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) 2000 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.
+ */
+/* RCSID("$OpenBSD: channels.h,v 1.24 2000/12/05 20:34:10 markus Exp $"); */
#ifndef CHANNELS_H
#define CHANNELS_H
#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_MAX_TYPE 11
+#define SSH_CHANNEL_RPORT_LISTENER 11 /* Listening to a R-style port */
+#define SSH_CHANNEL_CONNECTING 12
+#define SSH_CHANNEL_MAX_TYPE 13
/*
* Data structure for channel data. This is iniailized in channel_allocate
* and cleared in channel_free.
*/
+struct Channel;
+typedef struct Channel Channel;
+
typedef void channel_callback_fn(int id, void *arg);
+typedef int channel_filter_fn(struct Channel *c, char *buf, int len);
-typedef struct Channel {
+struct Channel {
int type; /* channel type/state */
int self; /* my own channel identifier */
int remote_id; /* channel identifier for remote peer */
void *cb_arg;
int cb_event;
channel_callback_fn *dettach_user;
-} Channel;
+
+ /* filter */
+ channel_filter_fn *input_filter;
+};
#define CHAN_EXTENDED_IGNORE 0
#define CHAN_EXTENDED_READ 1
#define CHAN_EXTENDED_WRITE 2
-void channel_set_fds(int id, int rfd, int wfd, int efd, int extusage);
+/* 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)
+
+
void channel_open(int id);
void channel_request(int id, char *service, int wantconfirm);
void channel_request_start(int id, char *service, int wantconfirm);
void channel_register_callback(int id, int mtype, channel_callback_fn *fn, void *arg);
void channel_register_cleanup(int id, channel_callback_fn *fn);
+void channel_register_filter(int id, channel_filter_fn *fn);
void channel_cancel_cleanup(int id);
Channel *channel_lookup(int id);
int
channel_new(char *ctype, int type, int rfd, int wfd, int efd,
- int window, int maxpack, int extended_usage, char *remote_name);
-
-void channel_input_channel_request(int type, int plen);
-void channel_input_close(int type, int plen);
-void channel_input_close_confirmation(int type, int plen);
-void channel_input_data(int type, int plen);
-void channel_input_extended_data(int type, int plen);
-void channel_input_ieof(int type, int plen);
-void channel_input_oclose(int type, int plen);
-void channel_input_open_confirmation(int type, int plen);
-void channel_input_open_failure(int type, int plen);
-void channel_input_port_open(int type, int plen);
-void channel_input_window_adjust(int type, int plen);
-void channel_input_open(int type, int plen);
+ int window, int maxpack, int extended_usage, char *remote_name,
+ int nonblock);
+void
+channel_set_fds(int id, int rfd, int wfd, int efd,
+ int extusage, int nonblock);
+
+void deny_input_open(int type, int plen, void *ctxt);
+
+void channel_input_channel_request(int type, int plen, void *ctxt);
+void channel_input_close(int type, int plen, void *ctxt);
+void channel_input_close_confirmation(int type, int plen, void *ctxt);
+void channel_input_data(int type, int plen, void *ctxt);
+void channel_input_extended_data(int type, int plen, void *ctxt);
+void channel_input_ieof(int type, int plen, void *ctxt);
+void channel_input_oclose(int type, int plen, void *ctxt);
+void channel_input_open_confirmation(int type, int plen, void *ctxt);
+void channel_input_open_failure(int type, int plen, void *ctxt);
+void channel_input_port_open(int type, int plen, void *ctxt);
+void channel_input_window_adjust(int type, int plen, void *ctxt);
/* Sets specific protocol options. */
void channel_set_options(int hostname_in_open);
/*
* Initiate forwarding of connections to local port "port" through the secure
- * channel to host:port from remote side. This never returns if there was an
- * error.
+ * channel to host:port from remote side.
*/
void
-channel_request_local_forwarding(u_short port, const char *host,
- u_short remote_port, int gateway_ports);
+channel_request_local_forwarding(u_short listen_port,
+ const char *host_to_connect, u_short port_to_connect, int gateway_ports);
+void
+channel_request_forwarding(const char *listen_address, u_short listen_port,
+ const char *host_to_connect, u_short port_to_connect, int gateway_ports,
+ int remote_fwd);
/*
* Initiate forwarding of connections to port "port" on remote host through
* the remote channel number. We should do whatever we want, and respond
* with either SSH_MSG_OPEN_CONFIRMATION or SSH_MSG_OPEN_FAILURE.
*/
-void x11_input_open(int type, int plen);
+void x11_input_open(int type, int plen, void *ctxt);
/*
* Requests forwarding of X11 connections. This should be called on the
int auth_input_request_forwarding(struct passwd * pw);
/* This is called to process an SSH_SMSG_AGENT_OPEN message. */
-void auth_input_open_request(int type, int plen);
+void auth_input_open_request(int type, int plen, void *ctxt);
/* XXX */
int channel_connect_to(const char *host, u_short host_port);
+int channel_connect_by_listen_adress(u_short listen_port);
int x11_connect_display(void);
#endif
andersk / openssh.git / blobdiff