Mercurial > dropbear
annotate common-session.c @ 940:e9dfb6d15193
Fix auth timeout regression
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 09 Jul 2014 22:02:22 +0800 |
parents | a0819ecfee0b |
children | 5daedffd0769 |
rev | line source |
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1 /* |
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2 * Dropbear - a SSH2 server |
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3 * |
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4 * Copyright (c) 2002,2003 Matt Johnston |
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5 * All rights reserved. |
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6 * |
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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8 * of this software and associated documentation files (the "Software"), to deal |
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9 * in the Software without restriction, including without limitation the rights |
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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11 * copies of the Software, and to permit persons to whom the Software is |
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12 * furnished to do so, subject to the following conditions: |
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13 * |
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14 * The above copyright notice and this permission notice shall be included in |
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15 * all copies or substantial portions of the Software. |
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16 * |
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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23 * SOFTWARE. */ |
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24 |
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25 #include "includes.h" |
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26 #include "session.h" |
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27 #include "dbutil.h" |
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28 #include "packet.h" |
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29 #include "algo.h" |
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30 #include "buffer.h" |
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31 #include "dss.h" |
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32 #include "ssh.h" |
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33 #include "dbrandom.h" |
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34 #include "kex.h" |
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35 #include "channel.h" |
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36 #include "runopts.h" |
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37 |
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38 static void checktimeouts(); |
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39 static long select_timeout(); |
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40 static int ident_readln(int fd, char* buf, int count); |
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41 static void read_session_identification(); |
26 | 42 |
24 | 43 struct sshsession ses; /* GLOBAL */ |
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44 |
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45 /* need to know if the session struct has been initialised, this way isn't the |
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46 * cleanest, but works OK */ |
24 | 47 int sessinitdone = 0; /* GLOBAL */ |
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48 |
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49 /* this is set when we get SIGINT or SIGTERM, the handler is in main.c */ |
24 | 50 int exitflag = 0; /* GLOBAL */ |
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51 |
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52 /* called only at the start of a session, set up initial state */ |
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53 void common_session_init(int sock_in, int sock_out) { |
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54 time_t now; |
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55 |
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56 TRACE(("enter session_init")) |
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57 |
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58 ses.sock_in = sock_in; |
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59 ses.sock_out = sock_out; |
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60 ses.maxfd = MAX(sock_in, sock_out); |
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61 |
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62 now = monotonic_now(); |
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63 ses.last_packet_time_keepalive_recv = now; |
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64 ses.last_packet_time_idle = now; |
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65 ses.last_packet_time_any_sent = 0; |
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66 ses.last_packet_time_keepalive_sent = 0; |
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67 |
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68 if (pipe(ses.signal_pipe) < 0) { |
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69 dropbear_exit("Signal pipe failed"); |
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70 } |
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71 setnonblocking(ses.signal_pipe[0]); |
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72 setnonblocking(ses.signal_pipe[1]); |
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73 |
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74 ses.maxfd = MAX(ses.maxfd, ses.signal_pipe[0]); |
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75 ses.maxfd = MAX(ses.maxfd, ses.signal_pipe[1]); |
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76 |
33 | 77 kexfirstinitialise(); /* initialise the kex state */ |
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78 |
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79 ses.writepayload = buf_new(TRANS_MAX_PAYLOAD_LEN); |
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80 ses.transseq = 0; |
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81 |
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82 ses.readbuf = NULL; |
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83 ses.payload = NULL; |
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84 ses.recvseq = 0; |
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85 |
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86 initqueue(&ses.writequeue); |
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87 |
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88 ses.requirenext = SSH_MSG_KEXINIT; |
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89 ses.dataallowed = 1; /* we can send data until we actually |
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90 send the SSH_MSG_KEXINIT */ |
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91 ses.ignorenext = 0; |
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92 ses.lastpacket = 0; |
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93 ses.reply_queue_head = NULL; |
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94 ses.reply_queue_tail = NULL; |
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95 |
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96 /* set all the algos to none */ |
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97 ses.keys = (struct key_context*)m_malloc(sizeof(struct key_context)); |
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98 ses.newkeys = NULL; |
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99 ses.keys->recv.algo_crypt = &dropbear_nocipher; |
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100 ses.keys->trans.algo_crypt = &dropbear_nocipher; |
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101 ses.keys->recv.crypt_mode = &dropbear_mode_none; |
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102 ses.keys->trans.crypt_mode = &dropbear_mode_none; |
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103 |
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104 ses.keys->recv.algo_mac = &dropbear_nohash; |
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105 ses.keys->trans.algo_mac = &dropbear_nohash; |
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106 |
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107 ses.keys->algo_kex = NULL; |
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108 ses.keys->algo_hostkey = -1; |
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109 ses.keys->recv.algo_comp = DROPBEAR_COMP_NONE; |
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110 ses.keys->trans.algo_comp = DROPBEAR_COMP_NONE; |
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111 |
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112 #ifndef DISABLE_ZLIB |
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113 ses.keys->recv.zstream = NULL; |
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114 ses.keys->trans.zstream = NULL; |
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115 #endif |
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116 |
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117 /* key exchange buffers */ |
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118 ses.session_id = NULL; |
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119 ses.kexhashbuf = NULL; |
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120 ses.transkexinit = NULL; |
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121 ses.dh_K = NULL; |
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122 ses.remoteident = NULL; |
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123 |
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124 ses.chantypes = NULL; |
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125 |
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126 ses.allowprivport = 0; |
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127 |
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128 TRACE(("leave session_init")) |
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129 } |
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130 |
26 | 131 void session_loop(void(*loophandler)()) { |
132 | |
133 fd_set readfd, writefd; | |
134 struct timeval timeout; | |
135 int val; | |
136 | |
137 /* main loop, select()s for all sockets in use */ | |
138 for(;;) { | |
139 | |
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140 timeout.tv_sec = select_timeout(); |
26 | 141 timeout.tv_usec = 0; |
142 FD_ZERO(&writefd); | |
143 FD_ZERO(&readfd); | |
241
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144 dropbear_assert(ses.payload == NULL); |
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145 |
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146 /* during initial setup we flush out the KEXINIT packet before |
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147 * attempting to read the remote version string, which might block */ |
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148 if (ses.sock_in != -1 && (ses.remoteident || isempty(&ses.writequeue))) { |
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149 FD_SET(ses.sock_in, &readfd); |
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150 } |
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151 if (ses.sock_out != -1 && !isempty(&ses.writequeue)) { |
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152 FD_SET(ses.sock_out, &writefd); |
26 | 153 } |
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154 |
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155 /* We get woken up when signal handlers write to this pipe. |
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156 SIGCHLD in svr-chansession is the only one currently. */ |
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157 FD_SET(ses.signal_pipe[0], &readfd); |
26 | 158 |
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159 /* set up for channels which can be read/written */ |
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160 setchannelfds(&readfd, &writefd); |
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161 |
26 | 162 val = select(ses.maxfd+1, &readfd, &writefd, NULL, &timeout); |
163 | |
164 if (exitflag) { | |
165 dropbear_exit("Terminated by signal"); | |
166 } | |
167 | |
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168 if (val < 0 && errno != EINTR) { |
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169 dropbear_exit("Error in select"); |
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170 } |
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171 |
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172 if (val <= 0) { |
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173 /* If we were interrupted or the select timed out, we still |
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174 * want to iterate over channels etc for reading, to handle |
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175 * server processes exiting etc. |
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176 * We don't want to read/write FDs. */ |
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177 FD_ZERO(&writefd); |
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178 FD_ZERO(&readfd); |
26 | 179 } |
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180 |
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181 /* We'll just empty out the pipe if required. We don't do |
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182 any thing with the data, since the pipe's purpose is purely to |
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183 wake up the select() above. */ |
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184 if (FD_ISSET(ses.signal_pipe[0], &readfd)) { |
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185 char x; |
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186 while (read(ses.signal_pipe[0], &x, 1) > 0) {} |
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187 } |
26 | 188 |
189 /* check for auth timeout, rekeying required etc */ | |
190 checktimeouts(); | |
191 | |
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192 /* process session socket's incoming data */ |
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193 if (ses.sock_in != -1) { |
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194 if (FD_ISSET(ses.sock_in, &readfd)) { |
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195 if (!ses.remoteident) { |
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196 /* blocking read of the version string */ |
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197 read_session_identification(); |
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198 } else { |
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199 read_packet(); |
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200 } |
26 | 201 } |
202 | |
203 /* Process the decrypted packet. After this, the read buffer | |
204 * will be ready for a new packet */ | |
205 if (ses.payload != NULL) { | |
206 process_packet(); | |
207 } | |
208 } | |
452
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209 |
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210 /* if required, flush out any queued reply packets that |
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211 were being held up during a KEX */ |
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212 maybe_flush_reply_queue(); |
26 | 213 |
214 /* process pipes etc for the channels, ses.dataallowed == 0 | |
215 * during rekeying ) */ | |
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216 channelio(&readfd, &writefd); |
26 | 217 |
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218 /* process session socket's outgoing data */ |
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219 if (ses.sock_out != -1) { |
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220 if (!isempty(&ses.writequeue)) { |
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221 write_packet(); |
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222 } |
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223 } |
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224 |
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225 |
26 | 226 if (loophandler) { |
227 loophandler(); | |
228 } | |
229 | |
230 } /* for(;;) */ | |
231 | |
232 /* Not reached */ | |
233 } | |
234 | |
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235 /* clean up a session on exit */ |
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236 void session_cleanup() { |
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237 |
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238 TRACE(("enter session_cleanup")) |
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239 |
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240 /* we can't cleanup if we don't know the session state */ |
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241 if (!sessinitdone) { |
165
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242 TRACE(("leave session_cleanup: !sessinitdone")) |
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243 return; |
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244 } |
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245 |
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246 if (ses.extra_session_cleanup) { |
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247 ses.extra_session_cleanup(); |
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248 } |
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249 |
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250 chancleanup(); |
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251 |
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252 /* Cleaning up keys must happen after other cleanup |
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253 functions which might queue packets */ |
761
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254 if (ses.session_id) { |
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255 buf_burn(ses.session_id); |
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256 buf_free(ses.session_id); |
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257 ses.session_id = NULL; |
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258 } |
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259 if (ses.hash) { |
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260 buf_burn(ses.hash); |
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261 buf_free(ses.hash); |
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262 ses.hash = NULL; |
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263 } |
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264 m_burn(ses.keys, sizeof(struct key_context)); |
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265 m_free(ses.keys); |
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266 |
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267 TRACE(("leave session_cleanup")) |
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268 } |
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269 |
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270 void send_session_identification() { |
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271 buffer *writebuf = buf_new(strlen(LOCAL_IDENT "\r\n") + 1); |
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272 buf_putbytes(writebuf, LOCAL_IDENT "\r\n", strlen(LOCAL_IDENT "\r\n")); |
857 | 273 buf_putbyte(writebuf, 0x0); /* packet type */ |
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274 buf_setpos(writebuf, 0); |
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275 enqueue(&ses.writequeue, writebuf); |
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276 } |
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277 |
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278 static void read_session_identification() { |
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279 /* max length of 255 chars */ |
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280 char linebuf[256]; |
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281 int len = 0; |
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282 char done = 0; |
103
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283 int i; |
513
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284 /* If they send more than 50 lines, something is wrong */ |
275
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285 for (i = 0; i < 50; i++) { |
479
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286 len = ident_readln(ses.sock_in, linebuf, sizeof(linebuf)); |
103
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287 |
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288 if (len < 0 && errno != EINTR) { |
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289 /* It failed */ |
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290 break; |
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291 } |
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292 |
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293 if (len >= 4 && memcmp(linebuf, "SSH-", 4) == 0) { |
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294 /* start of line matches */ |
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295 done = 1; |
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296 break; |
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297 } |
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298 } |
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299 |
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300 if (!done) { |
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301 TRACE(("err: %s for '%s'\n", strerror(errno), linebuf)) |
344
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302 ses.remoteclosed(); |
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303 } else { |
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304 /* linebuf is already null terminated */ |
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305 ses.remoteident = m_malloc(len); |
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306 memcpy(ses.remoteident, linebuf, len); |
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307 } |
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308 |
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309 /* Shall assume that 2.x will be backwards compatible. */ |
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310 if (strncmp(ses.remoteident, "SSH-2.", 6) != 0 |
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311 && strncmp(ses.remoteident, "SSH-1.99-", 9) != 0) { |
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312 dropbear_exit("Incompatible remote version '%s'", ses.remoteident); |
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313 } |
275
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314 |
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315 TRACE(("remoteident: %s", ses.remoteident)) |
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316 |
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317 } |
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318 |
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319 /* returns the length including null-terminating zero on success, |
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320 * or -1 on failure */ |
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321 static int ident_readln(int fd, char* buf, int count) { |
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322 |
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323 char in; |
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324 int pos = 0; |
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325 int num = 0; |
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326 fd_set fds; |
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327 struct timeval timeout; |
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328 |
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329 TRACE(("enter ident_readln")) |
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330 |
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331 if (count < 1) { |
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332 return -1; |
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333 } |
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334 |
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335 FD_ZERO(&fds); |
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336 |
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337 /* select since it's a non-blocking fd */ |
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338 |
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339 /* leave space to null-terminate */ |
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340 while (pos < count-1) { |
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341 |
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342 FD_SET(fd, &fds); |
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343 |
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344 timeout.tv_sec = 1; |
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345 timeout.tv_usec = 0; |
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346 if (select(fd+1, &fds, NULL, NULL, &timeout) < 0) { |
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347 if (errno == EINTR) { |
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348 continue; |
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349 } |
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350 TRACE(("leave ident_readln: select error")) |
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351 return -1; |
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352 } |
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353 |
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354 checktimeouts(); |
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355 |
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356 /* Have to go one byte at a time, since we don't want to read past |
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357 * the end, and have to somehow shove bytes back into the normal |
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358 * packet reader */ |
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359 if (FD_ISSET(fd, &fds)) { |
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360 num = read(fd, &in, 1); |
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361 /* a "\n" is a newline, "\r" we want to read in and keep going |
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362 * so that it won't be read as part of the next line */ |
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363 if (num < 0) { |
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364 /* error */ |
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365 if (errno == EINTR) { |
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366 continue; /* not a real error */ |
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367 } |
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368 TRACE(("leave ident_readln: read error")) |
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369 return -1; |
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370 } |
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371 if (num == 0) { |
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372 /* EOF */ |
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373 TRACE(("leave ident_readln: EOF")) |
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374 return -1; |
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375 } |
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376 if (in == '\n') { |
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377 /* end of ident string */ |
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378 break; |
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379 } |
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380 /* we don't want to include '\r's */ |
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381 if (in != '\r') { |
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382 buf[pos] = in; |
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383 pos++; |
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384 } |
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385 } |
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386 } |
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387 |
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388 buf[pos] = '\0'; |
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389 TRACE(("leave ident_readln: return %d", pos+1)) |
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390 return pos+1; |
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391 } |
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392 |
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393 static void send_msg_keepalive() { |
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394 CHECKCLEARTOWRITE(); |
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395 time_t old_time_idle = ses.last_packet_time_idle; |
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396 /* Try to force a response from the other end. Some peers will |
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397 reply with SSH_MSG_REQUEST_FAILURE, some will reply with SSH_MSG_UNIMPLEMENTED */ |
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398 buf_putbyte(ses.writepayload, SSH_MSG_GLOBAL_REQUEST); |
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399 /* A short string */ |
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400 buf_putstring(ses.writepayload, "[email protected]", 0); |
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401 buf_putbyte(ses.writepayload, 1); /* want_reply */ |
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402 encrypt_packet(); |
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403 |
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404 ses.last_packet_time_keepalive_sent = monotonic_now(); |
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405 |
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406 /* keepalives shouldn't update idle timeout, reset it back */ |
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407 ses.last_packet_time_idle = old_time_idle; |
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408 } |
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409 |
26 | 410 /* Check all timeouts which are required. Currently these are the time for |
411 * user authentication, and the automatic rekeying. */ | |
412 static void checktimeouts() { | |
413 | |
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414 time_t now; |
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415 now = monotonic_now(); |
26 | 416 |
417 /* we can't rekey if we haven't done remote ident exchange yet */ | |
418 if (ses.remoteident == NULL) { | |
419 return; | |
420 } | |
421 | |
422 if (!ses.kexstate.sentkexinit | |
454
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423 && (now - ses.kexstate.lastkextime >= KEX_REKEY_TIMEOUT |
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
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diff
changeset
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424 || ses.kexstate.datarecv+ses.kexstate.datatrans >= KEX_REKEY_DATA)) { |
165
0cfba3034be5
Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents:
135
diff
changeset
|
425 TRACE(("rekeying after timeout or max data reached")) |
26 | 426 send_msg_kexinit(); |
427 } | |
454
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- Add -K keepalive flag for dropbear and dbclient
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diff
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428 |
939
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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diff
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429 if (opts.keepalive_secs > 0) { |
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Make -K keepalive behave like OpenSSH's ServerAliveInterval
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parents:
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430 /* Send keepalives if we've been idle */ |
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Make -K keepalive behave like OpenSSH's ServerAliveInterval
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parents:
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changeset
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431 if (now - ses.last_packet_time_any_sent >= opts.keepalive_secs) { |
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Make -K keepalive behave like OpenSSH's ServerAliveInterval
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432 send_msg_keepalive(); |
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Make -K keepalive behave like OpenSSH's ServerAliveInterval
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433 } |
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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changeset
|
434 |
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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|
435 /* Also send an explicit keepalive message to trigger a response |
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Make -K keepalive behave like OpenSSH's ServerAliveInterval
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parents:
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changeset
|
436 if the remote end hasn't sent us anything */ |
a0819ecfee0b
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parents:
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437 if (now - ses.last_packet_time_keepalive_recv >= opts.keepalive_secs |
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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parents:
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438 && now - ses.last_packet_time_keepalive_sent >= opts.keepalive_secs) { |
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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parents:
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changeset
|
439 send_msg_keepalive(); |
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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440 } |
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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changeset
|
441 |
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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442 if (now - ses.last_packet_time_keepalive_recv |
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443 >= opts.keepalive_secs * DEFAULT_KEEPALIVE_LIMIT) { |
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changeset
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444 dropbear_exit("Keepalive timeout"); |
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changeset
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445 } |
454
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
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diff
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446 } |
513
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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parents:
502
diff
changeset
|
447 |
939
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Make -K keepalive behave like OpenSSH's ServerAliveInterval
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diff
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448 if (opts.idle_timeout_secs > 0 |
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changeset
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449 && now - ses.last_packet_time_idle >= opts.idle_timeout_secs) { |
513
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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parents:
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450 dropbear_close("Idle timeout"); |
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changeset
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451 } |
26 | 452 } |
453 | |
454
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- Add -K keepalive flag for dropbear and dbclient
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diff
changeset
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454 static long select_timeout() { |
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
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diff
changeset
|
455 /* determine the minimum timeout that might be required, so |
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
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parents:
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changeset
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456 as to avoid waking when unneccessary */ |
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diff
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457 long ret = LONG_MAX; |
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diff
changeset
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458 if (KEX_REKEY_TIMEOUT > 0) |
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parents:
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diff
changeset
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459 ret = MIN(KEX_REKEY_TIMEOUT, ret); |
926
b8208506322e
Use AUTH_TIMEOUT only before authdone != 1.
Yousong Zhou <yszhou4tech@gmail.com>
parents:
896
diff
changeset
|
460 /* AUTH_TIMEOUT is only relevant before authdone */ |
927 | 461 if (ses.authstate.authdone != 1 && AUTH_TIMEOUT > 0) |
454
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- Add -K keepalive flag for dropbear and dbclient
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diff
changeset
|
462 ret = MIN(AUTH_TIMEOUT, ret); |
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parents:
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diff
changeset
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463 if (opts.keepalive_secs > 0) |
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parents:
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diff
changeset
|
464 ret = MIN(opts.keepalive_secs, ret); |
926
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Use AUTH_TIMEOUT only before authdone != 1.
Yousong Zhou <yszhou4tech@gmail.com>
parents:
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diff
changeset
|
465 if (opts.idle_timeout_secs > 0) |
b8208506322e
Use AUTH_TIMEOUT only before authdone != 1.
Yousong Zhou <yszhou4tech@gmail.com>
parents:
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diff
changeset
|
466 ret = MIN(opts.idle_timeout_secs, ret); |
454
7e43f5e473b9
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parents:
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diff
changeset
|
467 return ret; |
7e43f5e473b9
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parents:
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diff
changeset
|
468 } |
482
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
469 |
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
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parents:
479
diff
changeset
|
470 const char* get_user_shell() { |
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
471 /* an empty shell should be interpreted as "/bin/sh" */ |
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
472 if (ses.authstate.pw_shell[0] == '\0') { |
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
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parents:
479
diff
changeset
|
473 return "/bin/sh"; |
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
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parents:
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diff
changeset
|
474 } else { |
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
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parents:
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diff
changeset
|
475 return ses.authstate.pw_shell; |
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
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parents:
479
diff
changeset
|
476 } |
7ad49f34a122
- Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
477 } |
483
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
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parents:
482
diff
changeset
|
478 void fill_passwd(const char* username) { |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
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parents:
482
diff
changeset
|
479 struct passwd *pw = NULL; |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
480 if (ses.authstate.pw_name) |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
481 m_free(ses.authstate.pw_name); |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
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parents:
482
diff
changeset
|
482 if (ses.authstate.pw_dir) |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
483 m_free(ses.authstate.pw_dir); |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
484 if (ses.authstate.pw_shell) |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
485 m_free(ses.authstate.pw_shell); |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
486 if (ses.authstate.pw_passwd) |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
487 m_free(ses.authstate.pw_passwd); |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
488 |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
489 pw = getpwnam(username); |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
490 if (!pw) { |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
491 return; |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
492 } |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
493 ses.authstate.pw_uid = pw->pw_uid; |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
494 ses.authstate.pw_gid = pw->pw_gid; |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
495 ses.authstate.pw_name = m_strdup(pw->pw_name); |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
496 ses.authstate.pw_dir = m_strdup(pw->pw_dir); |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
497 ses.authstate.pw_shell = m_strdup(pw->pw_shell); |
676
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
498 { |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
499 char *passwd_crypt = pw->pw_passwd; |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
500 #ifdef HAVE_SHADOW_H |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
501 /* get the shadow password if possible */ |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
502 struct spwd *spasswd = getspnam(ses.authstate.pw_name); |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
503 if (spasswd && spasswd->sp_pwdp) { |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
504 passwd_crypt = spasswd->sp_pwdp; |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
505 } |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
506 #endif |
705
2e573f39b88e
Android returns NULL for pw_crypt, set it to something else
Matt Johnston <matt@ucc.asn.au>
parents:
676
diff
changeset
|
507 if (!passwd_crypt) { |
2e573f39b88e
Android returns NULL for pw_crypt, set it to something else
Matt Johnston <matt@ucc.asn.au>
parents:
676
diff
changeset
|
508 /* android supposedly returns NULL */ |
2e573f39b88e
Android returns NULL for pw_crypt, set it to something else
Matt Johnston <matt@ucc.asn.au>
parents:
676
diff
changeset
|
509 passwd_crypt = "!!"; |
2e573f39b88e
Android returns NULL for pw_crypt, set it to something else
Matt Johnston <matt@ucc.asn.au>
parents:
676
diff
changeset
|
510 } |
676
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
511 ses.authstate.pw_passwd = m_strdup(passwd_crypt); |
0edf08895a33
Return immediate success for blank passwords if allowed
Matt Johnston <matt@ucc.asn.au>
parents:
594
diff
changeset
|
512 } |
483
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
513 } |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
482
diff
changeset
|
514 |