Mercurial > dropbear

annotate common-channel.c @ 58:5edf356295af

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merge of 3b1edf7489e1de452e30aaaec37d647db44e4328 and 6cdb6b2c0e0e0a600eeb5975e499c9303fe2d4d4
author Matt Johnston <matt@ucc.asn.au>
date Mon, 09 Aug 2004 03:21:20 +0000
parents 0913e2ee3545
children 20563735e8b5
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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
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25 /* Handle the multiplexed channels, such as sessions, x11, agent connections */
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26
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27 #include "includes.h"
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28 #include "session.h"
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29 #include "packet.h"
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30 #include "ssh.h"
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31 #include "buffer.h"
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32 #include "dbutil.h"
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33 #include "channel.h"
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34 #include "ssh.h"
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35 #include "tcpfwd-direct.h"
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36 #include "tcpfwd-remote.h"
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37 #include "listener.h"
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38
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39 static void send_msg_channel_open_failure(unsigned int remotechan, int reason,
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40 const unsigned char *text, const unsigned char *lang);
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41 static void send_msg_channel_open_confirmation(struct Channel* channel,
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42 unsigned int recvwindow,
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43 unsigned int recvmaxpacket);
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44 static void writechannel(struct Channel *channel);
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45 static void send_msg_channel_window_adjust(struct Channel *channel,
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46 unsigned int incr);
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47 static void send_msg_channel_data(struct Channel *channel, int isextended,
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48 unsigned int exttype);
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49 static void send_msg_channel_eof(struct Channel *channel);
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50 static void send_msg_channel_close(struct Channel *channel);
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51 static void removechannel(struct Channel *channel);
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52 static void deletechannel(struct Channel *channel);
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53 static void checkinitdone(struct Channel *channel);
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54 static void checkclose(struct Channel *channel);
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55
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56 static void closeinfd(struct Channel * channel);
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57 static void closeoutfd(struct Channel * channel, int fd);
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58 static void closechanfd(struct Channel *channel, int fd, int how);
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59
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60 #define FD_UNINIT (-2)
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61 #define FD_CLOSED (-1)
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62
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63 /* Initialise all the channels */
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64 void chaninitialise(const struct ChanType *chantypes[]) {
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65
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66 /* may as well create space for a single channel */
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67 ses.channels = (struct Channel**)m_malloc(sizeof(struct Channel*));
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68 ses.chansize = 1;
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69 ses.channels[0] = NULL;
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70 ses.chancount = 0;
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72 ses.chantypes = chantypes;
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73
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74 #ifdef USING_LISTENERS
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75 listeners_initialise();
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76 #endif
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78 }
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