Mercurial > dropbear

annotate common-channel.c @ 108:10f4d3319780

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- added circular buffering for channels - added stderr support for the client - cleaned up a bunch of "unused" warnings, duplicated header definitions - added exit-status support for the client
author Matt Johnston <matt@ucc.asn.au>
date Thu, 26 Aug 2004 13:16:40 +0000
parents d3eb1fa8484e
children 2e9d1f29c50f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Dropbear SSH
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3 *
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4 * Copyright (c) 2002-2004 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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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 "circbuffer.h"
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33 #include "dbutil.h"
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34 #include "channel.h"
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35 #include "ssh.h"
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36 #include "listener.h"
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38 static void send_msg_channel_open_failure(unsigned int remotechan, int reason,
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39 const unsigned char *text, const unsigned char *lang);
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40 static void send_msg_channel_open_confirmation(struct Channel* channel,
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41 unsigned int recvwindow,
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42 unsigned int recvmaxpacket);
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43 static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf);
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44 static void send_msg_channel_window_adjust(struct Channel *channel,
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45 unsigned int incr);
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46 static void send_msg_channel_data(struct Channel *channel, int isextended,
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47 unsigned int exttype);
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48 static void send_msg_channel_eof(struct Channel *channel);
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49 static void send_msg_channel_close(struct Channel *channel);
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50 static void removechannel(struct Channel *channel);
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51 static void deletechannel(struct Channel *channel);
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52 static void checkinitdone(struct Channel *channel);
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53 static void checkclose(struct Channel *channel);
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54
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55 static void closeinfd(struct Channel * channel);
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56 static void closeoutfd(struct Channel * channel, int fd);
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57 static void closechanfd(struct Channel *channel, int fd, int how);
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59 #define FD_UNINIT (-2)
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60 #define FD_CLOSED (-1)
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61
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62 /* Initialise all the channels */
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63 void chaninitialise(const struct ChanType *chantypes[]) {
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65 /* may as well create space for a single channel */
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66 ses.channels = (struct Channel**)m_malloc(sizeof(struct Channel*));
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67 ses.chansize = 1;
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68 ses.channels[0] = NULL;
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69 ses.chancount = 0;
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71 ses.chantypes = chantypes;
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72
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73 #ifdef USING_LISTENERS
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74 listeners_initialise();
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75 #endif
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77 }
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79 /* Clean up channels, freeing allocated memory */
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80 void chancleanup() {
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82 unsigned int i;
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83
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84 TRACE(("enter chancleanup"));
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85 for (i = 0; i < ses.chansize; i++) {
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86 if (ses.channels[i] != NULL) {
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87 TRACE(("channel %d closing", i));
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88 removechannel(ses.channels[i]);
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89 }
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90 }
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91 m_free(ses.channels);
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92 TRACE(("leave chancleanup"));
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93 }
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94
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95 /* Create a new channel entry, send a reply confirm or failure */
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96 /* If remotechan, transwindow and transmaxpacket are not know (for a new
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97 * outgoing connection, with them to be filled on confirmation), they should
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98 * all be set to 0 */
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99 struct Channel* newchannel(unsigned int remotechan,
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100 const struct ChanType *type,
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101 unsigned int transwindow, unsigned int transmaxpacket) {
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102
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103 struct Channel * newchan;
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104 unsigned int i, j;
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105
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106 TRACE(("enter newchannel"));
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108 /* first see if we can use existing channels */
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109 for (i = 0; i < ses.chansize; i++) {
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110 if (ses.channels[i] == NULL) {
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111 break;
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112 }
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113 }
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115 /* otherwise extend the list */
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116 if (i == ses.chansize) {
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117 if (ses.chansize >= MAX_CHANNELS) {
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118 TRACE(("leave newchannel: max chans reached"));
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119 return NULL;
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120 }
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121
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122 /* extend the channels */
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123 ses.channels = (struct Channel**)m_realloc(ses.channels,
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124 (ses.chansize+CHAN_EXTEND_SIZE)*sizeof(struct Channel*));
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125
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126 ses.chansize += CHAN_EXTEND_SIZE;
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127
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128 /* set the new channels to null */
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129 for (j = i; j < ses.chansize; j++) {
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130 ses.channels[j] = NULL;
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131 }
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132
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133 }
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134
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135 newchan = (struct Channel*)m_malloc(sizeof(struct Channel));
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136 newchan->type = type;
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137 newchan->index = i;
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138 newchan->sentclosed = newchan->recvclosed = 0;
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139 newchan->senteof = newchan->recveof = 0;
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140
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141 newchan->remotechan = remotechan;
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142 newchan->transwindow = transwindow;
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143 newchan->transmaxpacket = transmaxpacket;
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144
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145 newchan->typedata = NULL;
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146 newchan->infd = FD_UNINIT;
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147 newchan->outfd = FD_UNINIT;
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148 newchan->errfd = FD_CLOSED; /* this isn't always set to start with */
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149 newchan->initconn = 0;
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150
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151 newchan->writebuf = cbuf_new(RECV_MAXWINDOW);
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152 newchan->extrabuf = NULL; /* The user code can set it up */
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153 newchan->recvwindow = RECV_MAXWINDOW;
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154 newchan->recvdonelen = 0;
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155 newchan->recvmaxpacket = RECV_MAXPACKET;
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156
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157 ses.channels[i] = newchan;
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158 ses.chancount++;
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159
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160 TRACE(("leave newchannel"));
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161
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162 return newchan;
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163 }
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164
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165 /* Get the channel structure corresponding to a channel number */
107
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166 struct Channel* getchannel(unsigned int chan) {
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167 if (chan >= ses.chansize || ses.channels[chan] == NULL) {
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168 return NULL;
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169 }
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170 return ses.channels[chan];
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171 }
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172
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173 /* Iterate through the channels, performing IO if available */
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174 void channelio(fd_set *readfd, fd_set *writefd) {
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175
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176 struct Channel *channel;
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177 unsigned int i;
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178 int ret;
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179
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180 /* iterate through all the possible channels */
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181 for (i = 0; i < ses.chansize; i++) {
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182
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183 channel = ses.channels[i];
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184 if (channel == NULL) {
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185 /* only process in-use channels */
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186 continue;
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187 }
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188
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189 /* read from program/pipe stdout */
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190 if (channel->outfd >= 0 && FD_ISSET(channel->outfd, readfd)) {
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191 send_msg_channel_data(channel, 0, 0);
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192 }
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193
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194 /* read from program/pipe stderr */
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195 if (channel->errfd >= 0 && FD_ISSET(channel->errfd, readfd)) {
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196 send_msg_channel_data(channel, 1, SSH_EXTENDED_DATA_STDERR);
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197 }
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198
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199 /* if we can read from the infd, it might be closed, so we try to
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200 * see if it has errors */
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201 if (channel->infd >= 0 && channel->infd != channel->outfd
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202 && FD_ISSET(channel->infd, readfd)) {
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203 if (channel->initconn) {
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204 /* Handling for "in progress" connection - this is needed
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205 * to avoid spinning 100% CPU when we connect to a server
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206 * which doesn't send anything (tcpfwding) */
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207 checkinitdone(channel);
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208 continue; /* Important not to use the channel after
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209 checkinitdone(), as it may be NULL */
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210 }
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211 ret = write(channel->infd, NULL, 0); /* Fake write */
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212 if (ret < 0 && errno != EINTR && errno != EAGAIN) {
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213 closeinfd(channel);
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214 }
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215 }
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216
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217 /* write to program/pipe stdin */
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218 if (channel->infd >= 0 && FD_ISSET(channel->infd, writefd)) {
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219 if (channel->initconn) {
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220 checkinitdone(channel);
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221 continue; /* Important not to use the channel after
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222 checkinitdone(), as it may be NULL */
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223 }
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224 writechannel(channel, channel->infd, channel->writebuf);
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225 }
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226
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227 /* stderr for client mode */
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228 if (channel->extrabuf != NULL
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229 && channel->errfd >= 0 && FD_ISSET(channel->errfd, writefd)) {
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230 writechannel(channel, channel->errfd, channel->extrabuf);
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231 }
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232
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233 /* now handle any of the channel-closing type stuff */
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234 checkclose(channel);
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235
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236 } /* foreach channel */
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237
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238 /* Listeners such as TCP, X11, agent-auth */
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239 #ifdef USING_LISTENERS
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240 handle_listeners(readfd);
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241 #endif
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242 }
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243
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244
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245 /* do all the EOF/close type stuff checking for a channel */
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246 static void checkclose(struct Channel *channel) {
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247
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248 if (!channel->sentclosed) {
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249
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250 /* check for exited - currently only used for server sessions,
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251 * if the shell has exited etc */
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252 if (channel->type->checkclose) {
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253 if (channel->type->checkclose(channel)) {
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254 closeinfd(channel);
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255 }
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256 }
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257
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258 if (!channel->senteof
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259 && channel->outfd == FD_CLOSED
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260 && channel->errfd == FD_CLOSED) {
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261 send_msg_channel_eof(channel);
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262 }
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263
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264 if (channel->infd == FD_CLOSED
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265 && channel->outfd == FD_CLOSED
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266 && channel->errfd == FD_CLOSED) {
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267 send_msg_channel_close(channel);
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268 }
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269 }
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270
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271 /* When either party wishes to terminate the channel, it sends
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272 * SSH_MSG_CHANNEL_CLOSE. Upon receiving this message, a party MUST
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273 * send back a SSH_MSG_CHANNEL_CLOSE unless it has already sent this
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274 * message for the channel. The channel is considered closed for a
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275 * party when it has both sent and received SSH_MSG_CHANNEL_CLOSE, and
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276 * the party may then reuse the channel number. A party MAY send
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277 * SSH_MSG_CHANNEL_CLOSE without having sent or received
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278 * SSH_MSG_CHANNEL_EOF.
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279 * (from draft-ietf-secsh-connect)
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280 */
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281 if (channel->recvclosed) {
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282 if (! channel->sentclosed) {
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283 TRACE(("Sending MSG_CHANNEL_CLOSE in response to same."));
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284 send_msg_channel_close(channel);
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285 }
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286 removechannel(channel);
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287 }
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288 }
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289
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290
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291 /* Check whether a deferred (EINPROGRESS) connect() was successful, and
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292 * if so, set up the channel properly. Otherwise, the channel is cleaned up, so
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293 * it is important that the channel reference isn't used after a call to this
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294 * function */
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295 static void checkinitdone(struct Channel *channel) {
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296
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297 int val;
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298 socklen_t vallen = sizeof(val);
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299
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300 TRACE(("enter checkinitdone"));
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301
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302 if (getsockopt(channel->infd, SOL_SOCKET, SO_ERROR, &val, &vallen)
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303 || val != 0) {
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304 send_msg_channel_open_failure(channel->remotechan,
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305 SSH_OPEN_CONNECT_FAILED, "", "");
4
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306 close(channel->infd);
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307 deletechannel(channel);
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308 TRACE(("leave checkinitdone: fail"));
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309 } else {
70
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310 send_msg_channel_open_confirmation(channel, channel->recvwindow,
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311 channel->recvmaxpacket);
4
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312 channel->outfd = channel->infd;
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313 channel->initconn = 0;
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314 TRACE(("leave checkinitdone: success"));
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315 }
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316 }
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317
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318
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319
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320 /* Send the close message and set the channel as closed */
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321 static void send_msg_channel_close(struct Channel *channel) {
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322
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323 TRACE(("enter send_msg_channel_close"));
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324 /* XXX server */
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325 if (channel->type->closehandler) {
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326 channel->type->closehandler(channel);
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327 }
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328
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329 CHECKCLEARTOWRITE();
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330
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331 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_CLOSE);
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332 buf_putint(ses.writepayload, channel->remotechan);
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333
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334 encrypt_packet();
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335
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336 channel->senteof = 1;
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337 channel->sentclosed = 1;
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338 TRACE(("leave send_msg_channel_close"));
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339 }
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340
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341 /* call this when trans/eof channels are closed */
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342 static void send_msg_channel_eof(struct Channel *channel) {
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343
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344 TRACE(("enter send_msg_channel_eof"));
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345 CHECKCLEARTOWRITE();
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346
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347 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_EOF);
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348 buf_putint(ses.writepayload, channel->remotechan);
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349
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350 encrypt_packet();
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351
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352 channel->senteof = 1;
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353
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354 TRACE(("leave send_msg_channel_eof"));
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355 }
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356
107
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357 /* Called to write data out to the local side of the channel.
4
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358 * Only called when we know we can write to a channel, writes as much as
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359 * possible */
108
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360 static void writechannel(struct Channel* channel, int fd, circbuffer *cbuf) {
4
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361
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362 int len, maxlen;
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363
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364 TRACE(("enter writechannel"));
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365
107
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366 maxlen = cbuf_readlen(cbuf);
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367
107
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368 /* Write the data out */
108
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369 len = write(fd, cbuf_readptr(cbuf, maxlen), maxlen);
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370 if (len <= 0) {
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371 if (len < 0 && errno != EINTR) {
108
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diff changeset
372 /* no more to write - we close it even if the fd was stderr, since
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373 * that's a nasty failure too */
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374 closeinfd(channel);
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375 }
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376 TRACE(("leave writechannel: len <= 0"));
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377 return;
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378 }
107
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379
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380 cbuf_incrread(cbuf, len);
108
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diff changeset
381 channel->recvdonelen += len;
107
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diff changeset
382
108
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diff changeset
383 if (fd == channel->infd && len == maxlen && channel->recveof) {
107
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diff changeset
384 /* Check if we're closing up */
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385 closeinfd(channel);
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386 return;
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387 TRACE(("leave writechannel: recveof set"));
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388
107
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389 }
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390
107
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diff changeset
391 /* Window adjust handling */
108
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diff changeset
392 if (channel->recvdonelen >= RECV_WINDOWEXTEND) {
107
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diff changeset
393 /* Set it back to max window */
108
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394 send_msg_channel_window_adjust(channel, channel->recvdonelen);
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diff changeset
395 channel->recvwindow += channel->recvdonelen;
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396 channel->recvdonelen = 0;
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397 }
108
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diff changeset
398
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diff changeset
399 assert(channel->recvwindow <= RECV_MAXWINDOW);
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diff changeset
400 assert(channel->recvwindow <= cbuf_getavail(channel->writebuf));
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diff changeset
401 assert(channel->extrabuf == NULL ||
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parents: 107
diff changeset
402 channel->recvwindow <= cbuf_getavail(channel->extrabuf));
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
403
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
404
4
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405 TRACE(("leave writechannel"));
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406 }
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parents:
diff changeset
407
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diff changeset
408 /* Set the file descriptors for the main select in session.c
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parents:
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409 * This avoid channels which don't have any window available, are closed, etc*/
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diff changeset
410 void setchannelfds(fd_set *readfd, fd_set *writefd) {
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parents:
diff changeset
411
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parents:
diff changeset
412 unsigned int i;
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diff changeset
413 struct Channel * channel;
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diff changeset
414
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parents:
diff changeset
415 for (i = 0; i < ses.chansize; i++) {
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416
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diff changeset
417 channel = ses.channels[i];
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418 if (channel == NULL) {
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419 continue;
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420 }
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421
107
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diff changeset
422 /* Stuff to put over the wire */
4
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423 if (channel->transwindow > 0) {
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424
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parents:
diff changeset
425 if (channel->outfd >= 0) {
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diff changeset
426 FD_SET(channel->outfd, readfd);
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427 }
107
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parents: 70
diff changeset
428
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parents: 70
diff changeset
429 if (channel->extrabuf == NULL && channel->errfd >= 0) {
4
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diff changeset
430 FD_SET(channel->errfd, readfd);
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parents:
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431 }
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432 }
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433
107
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parents: 70
diff changeset
434 /* For checking FD status (ie closure etc) - we don't actually
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parents: 70
diff changeset
435 * read data from infd */
108
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parents: 107
diff changeset
436 TRACE(("infd = %d, outfd %d, bufused %d", channel->infd, channel->outfd,
10f4d3319780 - added circular buffering for channels
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diff changeset
437 cbuf_getused(channel->writebuf) ));
4
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438 if (channel->infd >= 0 && channel->infd != channel->outfd) {
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parents:
diff changeset
439 FD_SET(channel->infd, readfd);
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diff changeset
440 }
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441
107
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parents: 70
diff changeset
442 /* Stuff from the wire, to local program/shell/user etc */
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parents: 70
diff changeset
443 if ((channel->infd >= 0 && cbuf_getused(channel->writebuf) > 0 )
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
444 || channel->initconn) {
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
445
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diff changeset
446 FD_SET(channel->infd, writefd);
4
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447 }
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448
107
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diff changeset
449 if (channel->extrabuf != NULL && channel->errfd >= 0
108
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parents: 107
diff changeset
450 && cbuf_getused(channel->extrabuf) > 0 ) {
107
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parents: 70
diff changeset
451 FD_SET(channel->errfd, writefd);
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
452 }
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
453
4
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diff changeset
454 } /* foreach channel */
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diff changeset
455
9
7f77962de998 - Reworked non-channel fd handling to listener.c
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parents: 7
diff changeset
456 #ifdef USING_LISTENERS
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parents: 7
diff changeset
457 set_listener_fds(readfd);
4
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diff changeset
458 #endif
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diff changeset
459
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parents:
diff changeset
460 }
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parents:
diff changeset
461
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parents:
diff changeset
462 /* handle the channel EOF event, by closing the channel filedescriptor. The
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parents:
diff changeset
463 * channel isn't closed yet, it is left until the incoming (from the program
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parents:
diff changeset
464 * etc) FD is also EOF */
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parents:
diff changeset
465 void recv_msg_channel_eof() {
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parents:
diff changeset
466
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parents:
diff changeset
467 unsigned int chan;
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parents:
diff changeset
468 struct Channel * channel;
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parents:
diff changeset
469
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diff changeset
470 TRACE(("enter recv_msg_channel_eof"));
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parents:
diff changeset
471
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diff changeset
472 chan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
473 channel = getchannel(chan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
474
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
475 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
476 dropbear_exit("EOF for unknown channel");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
477 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
478
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
479 channel->recveof = 1;
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
480 if (cbuf_getused(channel->writebuf) == 0
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
481 && (channel->extrabuf == NULL
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
482 || cbuf_getused(channel->extrabuf) == 0)) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
483 closeinfd(channel);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
484 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
485
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
486 TRACE(("leave recv_msg_channel_eof"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
487 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
488
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
489
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
490 /* Handle channel closure(), respond in kind and close the channels */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
491 void recv_msg_channel_close() {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
492
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
493 unsigned int chan;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
494 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
495
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
496 TRACE(("enter recv_msg_channel_close"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
497
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
498 chan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
499 TRACE(("close channel = %d", chan));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
500 channel = getchannel(chan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
501
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
502 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
503 /* disconnect ? */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
504 dropbear_exit("Close for unknown channel");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
505 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
506
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
507 channel->recveof = 1;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
508 channel->recvclosed = 1;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
509
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
510 if (channel->sentclosed) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
511 removechannel(channel);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
512 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
513
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
514 TRACE(("leave recv_msg_channel_close"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
515 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
516
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
517 /* Remove a channel entry, this is only executed after both sides have sent
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
518 * channel close */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
519 static void removechannel(struct Channel * channel) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
520
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
521 TRACE(("enter removechannel"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
522 TRACE(("channel index is %d", channel->index));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
523
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
524 cbuf_free(channel->writebuf);
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
525 channel->writebuf = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
526
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
527 if (channel->extrabuf) {
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
528 cbuf_free(channel->extrabuf);
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
529 channel->extrabuf = NULL;
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
530 }
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
531
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
532
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
533 /* close the FDs in case they haven't been done
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
534 * yet (ie they were shutdown etc */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
535 close(channel->infd);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
536 close(channel->outfd);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
537 if (channel->errfd >= 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
538 close(channel->errfd);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
539 }
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
540 channel->typedata = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
541
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
542 deletechannel(channel);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
543
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
544 TRACE(("leave removechannel"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
545 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
546
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
547 /* Remove a channel entry */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
548 static void deletechannel(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
549
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
550 ses.channels[channel->index] = NULL;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
551 m_free(channel);
37
0913e2ee3545 we're nearly there yet
Matt Johnston <matt@ucc.asn.au>
parents: 13
diff changeset
552 ses.chancount--;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
553
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
554 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
555
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
556
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
557 /* Handle channel specific requests, passing off to corresponding handlers
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
558 * such as chansession or x11fwd */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
559 void recv_msg_channel_request() {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
560
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
561 unsigned int chan;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
562 struct Channel *channel;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
563
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
564 TRACE(("enter recv_msg_channel_request"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
565
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
566 chan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
567 channel = getchannel(chan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
568
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
569 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
570 /* disconnect ? */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
571 dropbear_exit("Unknown channel");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
572 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
573
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
574 if (channel->type->reqhandler) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
575 channel->type->reqhandler(channel);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
576 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
577 send_msg_channel_failure(channel);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
578 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
579
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
580 TRACE(("leave recv_msg_channel_request"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
581
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
582 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
583
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
584 /* Reads data from the server's program/shell/etc, and puts it in a
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
585 * channel_data packet to send.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
586 * chan is the remote channel, isextended is 0 if it is normal data, 1
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
587 * if it is extended data. if it is extended, then the type is in
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
588 * exttype */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
589 static void send_msg_channel_data(struct Channel *channel, int isextended,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
590 unsigned int exttype) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
591
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
592 buffer *buf;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
593 int len;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
594 unsigned int maxlen;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
595 int fd;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
596
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
597 /* TRACE(("enter send_msg_channel_data"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
598 TRACE(("extended = %d type = %d", isextended, exttype));*/
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
599
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
600 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
601
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
602 assert(!channel->sentclosed);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
603
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
604 if (isextended) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
605 fd = channel->errfd;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
606 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
607 fd = channel->outfd;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
608 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
609 assert(fd >= 0);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
610
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
611 maxlen = MIN(channel->transwindow, channel->transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
612 /* -(1+4+4) is SSH_MSG_CHANNEL_DATA, channel number, string length, and
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
613 * exttype if is extended */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
614 maxlen = MIN(maxlen,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
615 ses.writepayload->size - 1 - 4 - 4 - (isextended ? 4 : 0));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
616 if (maxlen == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
617 TRACE(("leave send_msg_channel_data: no window"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
618 return; /* the data will get written later */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
619 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
620
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
621 /* read the data */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
622 buf = buf_new(maxlen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
623 len = read(fd, buf_getwriteptr(buf, maxlen), maxlen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
624 if (len <= 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
625 /* on error/eof, send eof */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
626 if (len == 0 || errno != EINTR) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
627 closeoutfd(channel, fd);
13
db2c8e6fb284 Fixed stupid agentfwd error (using the listening FD, not the accepted on. gah)
Matt Johnston <matt@ucc.asn.au>
parents: 9
diff changeset
628 TRACE(("leave send_msg_channel_data: read err %d", channel->index));
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
629 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
630 buf_free(buf);
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
631 buf = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
632 return;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
633 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
634 buf_incrlen(buf, len);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
635
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
636 buf_putbyte(ses.writepayload,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
637 isextended ? SSH_MSG_CHANNEL_EXTENDED_DATA : SSH_MSG_CHANNEL_DATA);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
638 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
639
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
640 if (isextended) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
641 buf_putint(ses.writepayload, exttype);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
642 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
643
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
644 buf_putstring(ses.writepayload, buf_getptr(buf, len), len);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
645 buf_free(buf);
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
646 buf = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
647
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
648 channel->transwindow -= len;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
649
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
650 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
651 TRACE(("leave send_msg_channel_data"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
652 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
653
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
654 /* We receive channel data */
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
655 void recv_msg_channel_data() {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
656
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
657 unsigned int chan;
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
658 struct Channel *channel;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
659
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
660 chan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
661 channel = getchannel(chan);
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
662
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
663 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
664 dropbear_exit("Unknown channel");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
665 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
666
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
667 common_recv_msg_channel_data(channel, channel->infd, channel->writebuf);
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
668 }
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
669
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
670 /* Shared for data and stderr data - when we receive data, put it in a buffer
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
671 * for writing to the local file descriptor */
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
672 void common_recv_msg_channel_data(struct Channel *channel, int fd,
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
673 circbuffer * cbuf) {
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
674
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
675 unsigned int datalen;
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
676 unsigned int maxdata;
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
677 unsigned int buflen;
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
678 unsigned int len;
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
679
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
680 TRACE(("enter recv_msg_channel_data"));
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
681
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
682 if (channel->recveof) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
683 dropbear_exit("received data after eof");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
684 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
685
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
686 if (fd < 0) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
687 dropbear_exit("received data with bad infd");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
688 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
689
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
690 datalen = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
691
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
692
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
693 maxdata = cbuf_getavail(cbuf);
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
694
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
695 /* Whilst the spec says we "MAY ignore data past the end" this could
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
696 * lead to corrupted file transfers etc (chunks missed etc). It's better to
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
697 * just die horribly */
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
698 if (datalen > maxdata) {
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
699 dropbear_exit("Oversized packet");
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
700 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
701
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
702 /* We may have to run throught twice, if the buffer wraps around. Can't
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
703 * just "leave it for next time" like with writechannel, since this
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
704 * is payload data */
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
705 len = datalen;
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
706 while (len > 0) {
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
707 buflen = cbuf_writelen(cbuf);
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
708 buflen = MIN(buflen, len);
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
709
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
710 memcpy(cbuf_writeptr(cbuf, buflen),
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
711 buf_getptr(ses.payload, buflen), buflen);
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
712 cbuf_incrwrite(cbuf, buflen);
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
713 buf_incrpos(ses.payload, buflen);
107
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
714 len -= buflen;
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
715 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
716
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
717 assert(channel->recvwindow > datalen);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
718 channel->recvwindow -= datalen;
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 107
diff changeset
719 assert(channel->recvwindow <= RECV_MAXWINDOW);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
720
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
721 TRACE(("leave recv_msg_channel_data"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
722 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
723
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
724 /* Increment the outgoing data window for a channel - the remote end limits
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
725 * the amount of data which may be transmitted, this window is decremented
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
726 * as data is sent, and incremented upon receiving window-adjust messages */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
727 void recv_msg_channel_window_adjust() {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
728
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
729 unsigned int chan;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
730 struct Channel * channel;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
731 unsigned int incr;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
732
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
733 chan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
734 channel = getchannel(chan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
735
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
736 if (channel == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
737 dropbear_exit("Unknown channel");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
738 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
739
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
740 incr = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
741 TRACE(("received window increment %d", incr));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
742 incr = MIN(incr, MAX_TRANS_WIN_INCR);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
743
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
744 channel->transwindow += incr;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
745 channel->transwindow = MIN(channel->transwindow, MAX_TRANS_WINDOW);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
746
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
747 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
748
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
749 /* Increment the incoming data window for a channel, and let the remote
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
750 * end know */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
751 static void send_msg_channel_window_adjust(struct Channel* channel,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
752 unsigned int incr) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
753
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
754 TRACE(("sending window adjust %d", incr));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
755 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
756
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
757 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_WINDOW_ADJUST);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
758 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
759 buf_putint(ses.writepayload, incr);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
760
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
761 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
762 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
763
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
764 /* Handle a new channel request, performing any channel-type-specific setup */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
765 /* XXX server */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
766 void recv_msg_channel_open() {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
767
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
768 unsigned char *type;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
769 unsigned int typelen;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
770 unsigned int remotechan, transwindow, transmaxpacket;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
771 struct Channel *channel;
7
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
772 const struct ChanType **cp;
6
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
773 const struct ChanType *chantype;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
774 unsigned int errtype = SSH_OPEN_UNKNOWN_CHANNEL_TYPE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
775 int ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
776
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
777
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
778 TRACE(("enter recv_msg_channel_open"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
779
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
780 /* get the packet contents */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
781 type = buf_getstring(ses.payload, &typelen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
782
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
783 remotechan = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
784 transwindow = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
785 transwindow = MIN(transwindow, MAX_TRANS_WINDOW);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
786 transmaxpacket = buf_getint(ses.payload);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
787 transmaxpacket = MIN(transmaxpacket, MAX_TRANS_PAYLOAD_LEN);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
788
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
789 /* figure what type of packet it is */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
790 if (typelen > MAX_NAME_LEN) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
791 goto failure;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
792 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
793
7
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
794 /* Get the channel type. Client and server style invokation will set up a
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
795 * different list for ses.chantypes at startup. We just iterate through
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
796 * this list and find the matching name */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
797 for (cp = &ses.chantypes[0], chantype = (*cp);
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
798 chantype != NULL;
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
799 cp++, chantype = (*cp)) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
800 if (strcmp(type, chantype->name) == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
801 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
802 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
803 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
804
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
805 if (chantype == NULL) {
7
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
806 TRACE(("No matching type for '%s'", type));
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
807 goto failure;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
808 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
809
7
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
810 TRACE(("matched type '%s'", type));
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
811
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
812 /* create the channel */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
813 channel = newchannel(remotechan, chantype, transwindow, transmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
814
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
815 if (channel == NULL) {
6
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
816 TRACE(("newchannel returned NULL"));
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
817 goto failure;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
818 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
819
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
820 if (channel->type->inithandler) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
821 ret = channel->type->inithandler(channel);
6
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
822 if (ret > 0) {
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
823 if (ret == SSH_OPEN_IN_PROGRESS) {
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
824 /* We'll send the confirmation later */
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
825 goto cleanup;
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
826 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
827 errtype = ret;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
828 deletechannel(channel);
6
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
829 TRACE(("inithandler returned failure %d", ret));
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
830 goto failure;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
831 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
832 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
833
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
834 /* success */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
835 send_msg_channel_open_confirmation(channel, channel->recvwindow,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
836 channel->recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
837 goto cleanup;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
838
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
839 failure:
6
ab00ef513e97 Sorted out the first channel init issues.
Matt Johnston <matt@ucc.asn.au>
parents: 4
diff changeset
840 TRACE(("recv_msg_channel_open failure"));
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
841 send_msg_channel_open_failure(remotechan, errtype, "", "");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
842
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
843 cleanup:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
844 m_free(type);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
845
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
846 TRACE(("leave recv_msg_channel_open"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
847 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
848
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
849 /* Send a failure message */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
850 void send_msg_channel_failure(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
851
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
852 TRACE(("enter send_msg_channel_failure"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
853 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
854
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
855 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
856 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
857
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
858 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
859 TRACE(("leave send_msg_channel_failure"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
860 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
861
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
862 /* Send a success message */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
863 void send_msg_channel_success(struct Channel *channel) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
864
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
865 TRACE(("enter send_msg_channel_success"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
866 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
867
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
868 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_SUCCESS);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
869 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
870
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
871 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
872 TRACE(("leave send_msg_channel_success"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
873 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
874
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
875 /* Send a channel open failure message, with a corresponding reason
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
876 * code (usually resource shortage or unknown chan type) */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
877 static void send_msg_channel_open_failure(unsigned int remotechan,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
878 int reason, const unsigned char *text, const unsigned char *lang) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
879
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
880 TRACE(("enter send_msg_channel_open_failure"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
881 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
882
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
883 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_OPEN_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
884 buf_putint(ses.writepayload, remotechan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
885 buf_putint(ses.writepayload, reason);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
886 buf_putstring(ses.writepayload, text, strlen((char*)text));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
887 buf_putstring(ses.writepayload, lang, strlen((char*)lang));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
888
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
889 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
890 TRACE(("leave send_msg_channel_open_failure"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
891 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
892
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
893 /* Confirm a channel open, and let the remote end know what number we've
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
894 * allocated and the receive parameters */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
895 static void send_msg_channel_open_confirmation(struct Channel* channel,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
896 unsigned int recvwindow,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
897 unsigned int recvmaxpacket) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
898
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
899 TRACE(("enter send_msg_channel_open_confirmation"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
900 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
901
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
902 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
903 buf_putint(ses.writepayload, channel->remotechan);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
904 buf_putint(ses.writepayload, channel->index);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
905 buf_putint(ses.writepayload, recvwindow);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
906 buf_putint(ses.writepayload, recvmaxpacket);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
907
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
908 encrypt_packet();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
909 TRACE(("leave send_msg_channel_open_confirmation"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
910 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
911
13
db2c8e6fb284 Fixed stupid agentfwd error (using the listening FD, not the accepted on. gah)
Matt Johnston <matt@ucc.asn.au>
parents: 9
diff changeset
912 #ifdef USING_LISTENERS
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
913 /* Create a new channel, and start the open request. This is intended
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
914 * for X11, agent, tcp forwarding, and should be filled with channel-specific
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
915 * options, with the calling function calling encrypt_packet() after
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
916 * completion. It is mandatory for the caller to encrypt_packet() if
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
917 * DROPBEAR_SUCCESS is returned */
9
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents: 7
diff changeset
918 int send_msg_channel_open_init(int fd, const struct ChanType *type) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
919
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
920 struct Channel* chan;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
921
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
922 TRACE(("enter send_msg_channel_open_init()"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
923 chan = newchannel(0, type, 0, 0);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
924 if (!chan) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
925 TRACE(("leave send_msg_channel_open_init() - FAILED in newchannel()"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
926 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
927 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
928
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
929 /* set fd non-blocking */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
930 if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
931 TRACE(("leave send_msg_channel_open_init() - FAILED in fcntl()"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
932 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
933 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
934
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
935 chan->infd = chan->outfd = fd;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
936 ses.maxfd = MAX(ses.maxfd, fd);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
937
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
938 /* now open the channel connection */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
939 CHECKCLEARTOWRITE();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
940
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
941 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_OPEN);
9
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents: 7
diff changeset
942 buf_putstring(ses.writepayload, type->name, strlen(type->name));
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
943 buf_putint(ses.writepayload, chan->index);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
944 buf_putint(ses.writepayload, RECV_MAXWINDOW);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
945 buf_putint(ses.writepayload, RECV_MAXPACKET);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
946
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
947 TRACE(("leave send_msg_channel_open_init()"));
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
948 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
949 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
950
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
951 /* Confirmation that our channel open request (for forwardings) was
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
952 * successful*/
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
953 void recv_msg_channel_open_confirmation() {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
954
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
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955 unsigned int chan;
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956 struct Channel * channel;
37
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957 int ret;
4
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958
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959 TRACE(("enter recv_msg_channel_open_confirmation"));
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960 chan = buf_getint(ses.payload);
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961
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962 channel = getchannel(chan);
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963 if (channel == NULL) {
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964 dropbear_exit("Unknown channel");
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965 }
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966
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967 channel->remotechan = buf_getint(ses.payload);
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968 channel->transwindow = buf_getint(ses.payload);
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969 channel->transmaxpacket = buf_getint(ses.payload);
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970
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971 TRACE(("new chan remote %d localho %d", channel->remotechan, chan));
4
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972
37
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973 /* Run the inithandler callback */
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974 if (channel->type->inithandler) {
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975 ret = channel->type->inithandler(channel);
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976 if (ret > 0) {
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977 removechannel(channel);
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978 TRACE(("inithandler returned failure %d", ret));
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979 }
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980 }
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981
13
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982
4
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983 TRACE(("leave recv_msg_channel_open_confirmation"));
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984 }
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985
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986 /* Notification that our channel open request failed */
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987 void recv_msg_channel_open_failure() {
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988
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989 unsigned int chan;
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990 struct Channel * channel;
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991 chan = buf_getbyte(ses.payload);
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992
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993 channel = getchannel(chan);
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994 if (channel == NULL) {
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995 dropbear_exit("Unknown channel");
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996 }
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997
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998 removechannel(channel);
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999 }
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1000
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1001 /* close a stdout/stderr fd */
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1002 static void closeoutfd(struct Channel * channel, int fd) {
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1003
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1004 /* don't close it if it is the same as infd,
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1005 * unless infd is already set -1 */
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1006 TRACE(("enter closeoutfd"));
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1007 closechanfd(channel, fd, 0);
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1008 TRACE(("leave closeoutfd"));
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1009 }
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1010
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1011 /* close a stdin fd */
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1012 static void closeinfd(struct Channel * channel) {
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1013
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1014 TRACE(("enter closeinfd"));
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1015 closechanfd(channel, channel->infd, 1);
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1016 TRACE(("leave closeinfd"));
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1017 }
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1018
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1019 /* close a fd, how is 0 for stdout/stderr, 1 for stdin */
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1020 static void closechanfd(struct Channel *channel, int fd, int how) {
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1021
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1022 int closein = 0, closeout = 0;
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1023
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1024 /* XXX server */
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1025 if (channel->type->sepfds) {
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1026 shutdown(fd, how);
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1027 if (how == 0) {
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1028 closeout = 1;
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1029 } else {
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1030 closein = 1;
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1031 }
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1032 } else {
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1033 close(fd);
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1034 closein = closeout = 1;
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1035 }
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1036
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1037 if (closeout && fd == channel->errfd) {
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1038 channel->errfd = FD_CLOSED;
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1039 }
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1040 if (closeout && fd == channel->outfd) {
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1041 channel->outfd = FD_CLOSED;
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1042 }
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1043 if (closein && fd == channel->infd) {
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1044 channel->infd = FD_CLOSED;
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1045 }
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1046 }
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1047
13
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diff changeset
1048 #endif /* USING_LISTENERS */