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1 /*
2  * Dropbear - a SSH2 server
3  *
4  * Copyright (c) 2002,2003 Matt Johnston
5  * All rights reserved.
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23  * SOFTWARE. */
24 #ifndef _TCPFWD_H
25 #define _TCPFWD_H
26 
27 #include "channel.h"
28 
29 struct TCPListener {
30 
31 	/* For a direct-tcpip request, it's the addr/port we want the other
32 	 * end to connect to */
33 	unsigned char *sendaddr;
34 	unsigned int sendport;
35 
36 	/* This is the address/port that we listen on. The address has special
37 	 * meanings as per the rfc, "" for all interfaces, "localhost" for
38 	 * localhost, or a normal interface name. */
39 	unsigned char *listenaddr;
40 	unsigned int listenport;
41 
42 	const struct ChanType *chantype;
43 	enum {direct, forwarded} tcp_type;
44 };
45 
46 /* A link in a list of forwards */
47 struct TCPFwdList {
48 
49 	const unsigned char* connectaddr;
50 	unsigned int connectport;
51 	unsigned int listenport;
52 	struct TCPFwdList * next;
53 
54 };
55 
56 /* Server */
57 void recv_msg_global_request_remotetcp();
58 extern const struct ChanType svr_chan_tcpdirect;
59 
60 /* Client */
61 void setup_localtcp();
62 void setup_remotetcp();
63 extern const struct ChanType cli_chan_tcpremote;
64 
65 /* Common */
66 int listen_tcpfwd(struct TCPListener* tcpinfo);
67 
68 
69 #endif
70