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annotate tcpfwd.h @ 1277:07ee7736397e

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add the idiomatic do/while(0) in the macro SCREWUP
author Francois Perrad <francois.perrad@gadz.org>
date Thu, 31 Dec 2015 17:34:17 +0100
parents 9169e4e7cbee
children 572a7aefa188
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Dropbear - a SSH2 server
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3 *
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4 * Copyright (c) 2002,2003 Matt Johnston
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5 * All rights reserved.
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6 *
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 * of this software and associated documentation files (the "Software"), to deal
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9 * in the Software without restriction, including without limitation the rights
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 * copies of the Software, and to permit persons to whom the Software is
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12 * furnished to do so, subject to the following conditions:
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13 *
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14 * The above copyright notice and this permission notice shall be included in
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15 * all copies or substantial portions of the Software.
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16 *
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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23 * SOFTWARE. */
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24 #ifndef DROPBEAR_TCPFWD_H
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25 #define DROPBEAR_TCPFWD_H
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26
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27 #include "channel.h"
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28 #include "list.h"
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29
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30 struct TCPListener {
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31
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32 /* For a direct-tcpip request, it's the addr/port we want the other
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33 * end to connect to */
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34 char *sendaddr;
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35 unsigned int sendport;
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36
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37 /* This is the address/port that we listen on. The address has special
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38 * meanings as per the rfc, "" for all interfaces, "localhost" for
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39 * localhost, or a normal interface name. */
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40 char *listenaddr;
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41 unsigned int listenport;
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42 /* The address that the remote host asked to listen on */
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43 char *request_listenaddr;
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44
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45 const struct ChanType *chantype;
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46 enum {direct, forwarded} tcp_type;
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47 };
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48
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49 /* A forwarding entry */
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50 struct TCPFwdEntry {
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51 const char *connectaddr;
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52 unsigned int connectport;
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53 const char *listenaddr;
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54 unsigned int listenport;
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55 unsigned int have_reply; /* is set to 1 after a reply has been received
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56 when setting up the forwarding */
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57 };
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58
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59 /* Server */
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60 void recv_msg_global_request_remotetcp(void);
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61
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62 extern const struct ChanType svr_chan_tcpdirect;
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63
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64 /* Client */
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65 void setup_localtcp(void);
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66 void setup_remotetcp(void);
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67 extern const struct ChanType cli_chan_tcpremote;
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68 void cli_recv_msg_request_success(void);
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69 void cli_recv_msg_request_failure(void);
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71 /* Common */
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72 int listen_tcpfwd(struct TCPListener* tcpinfo);
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73 int tcp_prio_inithandler(struct Channel* chan);
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74
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75 /* A random identifier */
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76 #define CHANNEL_ID_TCPFORWARDED 0x43612c67
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78 #endif