annotate common-session.c @ 502:43bbe17d6ba0

- Add Counter Mode support
author Matt Johnston <matt@ucc.asn.au>
date Mon, 29 Sep 2008 13:53:31 +0000
parents 738313e73b1c
children a3748e54273c
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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 "random.h"
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34 #include "kex.h"
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35 #include "channel.h"
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36 #include "atomicio.h"
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37 #include "runopts.h"
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38
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39 static void checktimeouts();
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40 static long select_timeout();
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41 static int ident_readln(int fd, char* buf, int count);
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42
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43 struct sshsession ses; /* GLOBAL */
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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 */
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47 int sessinitdone = 0; /* GLOBAL */
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49 /* this is set when we get SIGINT or SIGTERM, the handler is in main.c */
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50 int exitflag = 0; /* GLOBAL */
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54 /* called only at the start of a session, set up initial state */
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55 void common_session_init(int sock_in, int sock_out, char* remotehost) {
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57 TRACE(("enter session_init"))
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58
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59 ses.remotehost = remotehost;
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61 ses.sock_in = sock_in;
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62 ses.sock_out = sock_out;
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63 ses.maxfd = MAX(sock_in, sock_out);
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64
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65 ses.connect_time = 0;
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66 ses.last_packet_time = 0;
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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 kexfirstinitialise(); /* initialise the kex state */
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76 ses.writepayload = buf_new(TRANS_MAX_PAYLOAD_LEN);
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77 ses.transseq = 0;
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78
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79 ses.readbuf = NULL;
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80 ses.decryptreadbuf = NULL;
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81 ses.payload = NULL;
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82 ses.recvseq = 0;
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83
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84 initqueue(&ses.writequeue);
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85
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86 ses.requirenext = SSH_MSG_KEXINIT;
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87 ses.dataallowed = 1; /* we can send data until we actually
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88 send the SSH_MSG_KEXINIT */
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89 ses.ignorenext = 0;
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90 ses.lastpacket = 0;
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91 ses.reply_queue_head = NULL;
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92 ses.reply_queue_tail = NULL;
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94 /* set all the algos to none */
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95 ses.keys = (struct key_context*)m_malloc(sizeof(struct key_context));
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96 ses.newkeys = NULL;
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97 ses.keys->recv_algo_crypt = &dropbear_nocipher;
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98 ses.keys->trans_algo_crypt = &dropbear_nocipher;
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99 ses.keys->recv_crypt_mode = &dropbear_mode_none;
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100 ses.keys->trans_crypt_mode = &dropbear_mode_none;
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102 ses.keys->recv_algo_mac = &dropbear_nohash;
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103 ses.keys->trans_algo_mac = &dropbear_nohash;
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104
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105 ses.keys->algo_kex = -1;
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106 ses.keys->algo_hostkey = -1;
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107 ses.keys->recv_algo_comp = DROPBEAR_COMP_NONE;
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108 ses.keys->trans_algo_comp = DROPBEAR_COMP_NONE;
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109
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110 #ifndef DISABLE_ZLIB
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111 ses.keys->recv_zstream = NULL;
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112 ses.keys->trans_zstream = NULL;
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113 #endif
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114
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115 /* key exchange buffers */
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116 ses.session_id = NULL;
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117 ses.kexhashbuf = NULL;
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118 ses.transkexinit = NULL;
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119 ses.dh_K = NULL;
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120 ses.remoteident = NULL;
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121
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122 ses.chantypes = NULL;
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123
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124 ses.allowprivport = 0;
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125
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126 TRACE(("leave session_init"))
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127 }
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128
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129 void session_loop(void(*loophandler)()) {
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130
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131 fd_set readfd, writefd;
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132 struct timeval timeout;
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133 int val;
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134
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135 /* main loop, select()s for all sockets in use */
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136 for(;;) {
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137
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138 timeout.tv_sec = select_timeout();
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139 timeout.tv_usec = 0;
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140 FD_ZERO(&writefd);
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141 FD_ZERO(&readfd);
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142 dropbear_assert(ses.payload == NULL);
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143 if (ses.sock_in != -1) {
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144 FD_SET(ses.sock_in, &readfd);
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145 }
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146 if (ses.sock_out != -1 && !isempty(&ses.writequeue)) {
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147 FD_SET(ses.sock_out, &writefd);
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148 }
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149
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150 /* We get woken up when signal handlers write to this pipe.
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151 SIGCHLD in svr-chansession is the only one currently. */
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152 FD_SET(ses.signal_pipe[0], &readfd);
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153
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154 /* set up for channels which require reading/writing */
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155 if (ses.dataallowed) {
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156 setchannelfds(&readfd, &writefd);
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157 }
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158 val = select(ses.maxfd+1, &readfd, &writefd, NULL, &timeout);
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159
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160 if (exitflag) {
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161 dropbear_exit("Terminated by signal");
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162 }
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163
373
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164 if (val < 0 && errno != EINTR) {
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165 dropbear_exit("Error in select");
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166 }
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167
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168 if (val <= 0) {
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169 /* If we were interrupted or the select timed out, we still
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170 * want to iterate over channels etc for reading, to handle
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171 * server processes exiting etc.
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172 * We don't want to read/write FDs. */
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173 FD_ZERO(&writefd);
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174 FD_ZERO(&readfd);
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175 }
416
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176
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177 /* We'll just empty out the pipe if required. We don't do
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178 any thing with the data, since the pipe's purpose is purely to
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179 wake up the select() above. */
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180 if (FD_ISSET(ses.signal_pipe[0], &readfd)) {
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181 char x;
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182 while (read(ses.signal_pipe[0], &x, 1) > 0) {}
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183 }
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184
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185 /* check for auth timeout, rekeying required etc */
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186 checktimeouts();
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187
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188 /* process session socket's incoming/outgoing data */
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189 if (ses.sock_out != -1) {
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190 if (FD_ISSET(ses.sock_out, &writefd) && !isempty(&ses.writequeue)) {
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191 write_packet();
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192 }
479
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193 }
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194
479
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195 if (ses.sock_in != -1) {
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196 if (FD_ISSET(ses.sock_in, &readfd)) {
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197 read_packet();
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198 }
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199
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200 /* Process the decrypted packet. After this, the read buffer
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201 * will be ready for a new packet */
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202 if (ses.payload != NULL) {
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203 process_packet();
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204 }
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205 }
452
4cab61369879 Prevent invalid packets being sent during key-exchange, instead queue
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206
4cab61369879 Prevent invalid packets being sent during key-exchange, instead queue
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diff changeset
207 /* if required, flush out any queued reply packets that
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diff changeset
208 were being held up during a KEX */
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diff changeset
209 maybe_flush_reply_queue();
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210
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211 /* process pipes etc for the channels, ses.dataallowed == 0
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212 * during rekeying ) */
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213 if (ses.dataallowed) {
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214 channelio(&readfd, &writefd);
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215 }
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216
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217 if (loophandler) {
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218 loophandler();
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219 }
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220
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221 } /* for(;;) */
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222
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223 /* Not reached */
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224 }
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225
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226 /* clean up a session on exit */
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227 void common_session_cleanup() {
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228
165
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229 TRACE(("enter session_cleanup"))
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230
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231 /* we can't cleanup if we don't know the session state */
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232 if (!sessinitdone) {
165
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233 TRACE(("leave session_cleanup: !sessinitdone"))
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234 return;
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235 }
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236
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237 m_free(ses.session_id);
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238 m_burn(ses.keys, sizeof(struct key_context));
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239 m_free(ses.keys);
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240
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241 chancleanup();
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242
165
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diff changeset
243 TRACE(("leave session_cleanup"))
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244 }
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245
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246
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247 void session_identification() {
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248
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249 /* max length of 255 chars */
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250 char linebuf[256];
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251 int len = 0;
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252 char done = 0;
103
8aeac62a968f Allow leading lines before the ident banner when connecting
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diff changeset
253 int i;
4
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254
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255 /* write our version string, this blocks */
479
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
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diff changeset
256 if (atomicio(write, ses.sock_out, LOCAL_IDENT "\r\n",
4
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257 strlen(LOCAL_IDENT "\r\n")) == DROPBEAR_FAILURE) {
344
bf29e6659fb9 Just use the normal "remote closed" handler when reading ident stings
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diff changeset
258 ses.remoteclosed();
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259 }
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260
275
7f9adaf85fca Exit with a message if the ssh protocol version is incompatible
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diff changeset
261 /* If they send more than 50 lines, something is wrong */
7f9adaf85fca Exit with a message if the ssh protocol version is incompatible
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diff changeset
262 for (i = 0; i < 50; i++) {
479
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
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diff changeset
263 len = ident_readln(ses.sock_in, linebuf, sizeof(linebuf));
103
8aeac62a968f Allow leading lines before the ident banner when connecting
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diff changeset
264
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diff changeset
265 if (len < 0 && errno != EINTR) {
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diff changeset
266 /* It failed */
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diff changeset
267 break;
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diff changeset
268 }
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diff changeset
269
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diff changeset
270 if (len >= 4 && memcmp(linebuf, "SSH-", 4) == 0) {
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diff changeset
271 /* start of line matches */
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diff changeset
272 done = 1;
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diff changeset
273 break;
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diff changeset
274 }
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275 }
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276
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277 if (!done) {
165
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diff changeset
278 TRACE(("err: %s for '%s'\n", strerror(errno), linebuf))
344
bf29e6659fb9 Just use the normal "remote closed" handler when reading ident stings
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diff changeset
279 ses.remoteclosed();
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280 } else {
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281 /* linebuf is already null terminated */
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282 ses.remoteident = m_malloc(len);
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283 memcpy(ses.remoteident, linebuf, len);
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284 }
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285
275
7f9adaf85fca Exit with a message if the ssh protocol version is incompatible
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parents: 242
diff changeset
286 /* Shall assume that 2.x will be backwards compatible. */
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diff changeset
287 if (strncmp(ses.remoteident, "SSH-2.", 6) != 0
7f9adaf85fca Exit with a message if the ssh protocol version is incompatible
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diff changeset
288 && strncmp(ses.remoteident, "SSH-1.99-", 9) != 0) {
7f9adaf85fca Exit with a message if the ssh protocol version is incompatible
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diff changeset
289 dropbear_exit("Incompatible remote version '%s'", ses.remoteident);
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diff changeset
290 }
7f9adaf85fca Exit with a message if the ssh protocol version is incompatible
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parents: 242
diff changeset
291
165
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diff changeset
292 TRACE(("remoteident: %s", ses.remoteident))
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293
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294 }
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295
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296 /* returns the length including null-terminating zero on success,
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297 * or -1 on failure */
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diff changeset
298 static int ident_readln(int fd, char* buf, int count) {
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299
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diff changeset
300 char in;
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diff changeset
301 int pos = 0;
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302 int num = 0;
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303 fd_set fds;
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304 struct timeval timeout;
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305
165
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diff changeset
306 TRACE(("enter ident_readln"))
4
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307
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308 if (count < 1) {
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309 return -1;
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310 }
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311
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312 FD_ZERO(&fds);
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313
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314 /* select since it's a non-blocking fd */
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315
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diff changeset
316 /* leave space to null-terminate */
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diff changeset
317 while (pos < count-1) {
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318
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319 FD_SET(fd, &fds);
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320
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321 timeout.tv_sec = 1;
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322 timeout.tv_usec = 0;
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diff changeset
323 if (select(fd+1, &fds, NULL, NULL, &timeout) < 0) {
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diff changeset
324 if (errno == EINTR) {
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diff changeset
325 continue;
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326 }
165
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diff changeset
327 TRACE(("leave ident_readln: select error"))
4
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328 return -1;
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329 }
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330
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331 checktimeouts();
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332
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333 /* Have to go one byte at a time, since we don't want to read past
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334 * the end, and have to somehow shove bytes back into the normal
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335 * packet reader */
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diff changeset
336 if (FD_ISSET(fd, &fds)) {
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337 num = read(fd, &in, 1);
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338 /* a "\n" is a newline, "\r" we want to read in and keep going
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339 * so that it won't be read as part of the next line */
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diff changeset
340 if (num < 0) {
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diff changeset
341 /* error */
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diff changeset
342 if (errno == EINTR) {
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343 continue; /* not a real error */
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344 }
165
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345 TRACE(("leave ident_readln: read error"))
4
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346 return -1;
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347 }
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348 if (num == 0) {
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349 /* EOF */
165
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parents: 135
diff changeset
350 TRACE(("leave ident_readln: EOF"))
4
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351 return -1;
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diff changeset
352 }
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diff changeset
353 if (in == '\n') {
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diff changeset
354 /* end of ident string */
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parents:
diff changeset
355 break;
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parents:
diff changeset
356 }
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parents:
diff changeset
357 /* we don't want to include '\r's */
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diff changeset
358 if (in != '\r') {
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diff changeset
359 buf[pos] = in;
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diff changeset
360 pos++;
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diff changeset
361 }
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362 }
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parents:
diff changeset
363 }
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364
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diff changeset
365 buf[pos] = '\0';
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 135
diff changeset
366 TRACE(("leave ident_readln: return %d", pos+1))
4
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diff changeset
367 return pos+1;
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diff changeset
368 }
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diff changeset
369
454
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Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
370 void send_msg_ignore() {
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Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
371 CHECKCLEARTOWRITE();
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Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
372 buf_putbyte(ses.writepayload, SSH_MSG_IGNORE);
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Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
373 buf_putstring(ses.writepayload, "", 0);
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parents: 452
diff changeset
374 encrypt_packet();
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Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
375 }
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Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
376
26
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parents: 24
diff changeset
377 /* Check all timeouts which are required. Currently these are the time for
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parents: 24
diff changeset
378 * user authentication, and the automatic rekeying. */
0969767bca0d snapshot of stuff
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parents: 24
diff changeset
379 static void checktimeouts() {
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parents: 24
diff changeset
380
454
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parents: 452
diff changeset
381 time_t now;
26
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parents: 24
diff changeset
382
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
383 now = time(NULL);
26
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parents: 24
diff changeset
384
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
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parents: 452
diff changeset
385 if (ses.connect_time != 0 && now - ses.connect_time >= AUTH_TIMEOUT) {
26
0969767bca0d snapshot of stuff
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parents: 24
diff changeset
386 dropbear_close("Timeout before auth");
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parents: 24
diff changeset
387 }
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parents: 24
diff changeset
388
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parents: 24
diff changeset
389 /* we can't rekey if we haven't done remote ident exchange yet */
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Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
390 if (ses.remoteident == NULL) {
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parents: 24
diff changeset
391 return;
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
392 }
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
393
0969767bca0d snapshot of stuff
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parents: 24
diff changeset
394 if (!ses.kexstate.sentkexinit
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
395 && (now - ses.kexstate.lastkextime >= KEX_REKEY_TIMEOUT
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
396 || 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
397 TRACE(("rekeying after timeout or max data reached"))
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
398 send_msg_kexinit();
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
399 }
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
400
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
401 if (opts.keepalive_secs > 0
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
402 && now - ses.last_packet_time >= opts.keepalive_secs) {
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
403 send_msg_ignore();
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
404 }
26
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
405 }
0969767bca0d snapshot of stuff
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
406
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
407 static long select_timeout() {
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
408 /* determine the minimum timeout that might be required, so
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
409 as to avoid waking when unneccessary */
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
410 long ret = LONG_MAX;
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
411 if (KEX_REKEY_TIMEOUT > 0)
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
412 ret = MIN(KEX_REKEY_TIMEOUT, ret);
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
413 if (AUTH_TIMEOUT > 0)
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
414 ret = MIN(AUTH_TIMEOUT, ret);
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
415 if (opts.keepalive_secs > 0)
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
416 ret = MIN(opts.keepalive_secs, ret);
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
417 return ret;
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 452
diff changeset
418 }
482
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
419
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
420 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
421 /* 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
422 if (ses.authstate.pw_shell[0] == '\0') {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
423 return "/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
424 } else {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
425 return ses.authstate.pw_shell;
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
426 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
427 }
483
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 482
diff changeset
428 void fill_passwd(const char* username) {
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 482
diff changeset
429 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
430 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
431 m_free(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
432 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
433 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
434 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
435 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
436 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
437 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
438
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 482
diff changeset
439 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
440 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
441 return;
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 482
diff changeset
442 }
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 482
diff changeset
443 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
444 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
445 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
446 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
447 ses.authstate.pw_shell = m_strdup(pw->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
448 ses.authstate.pw_passwd = m_strdup(pw->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
449 }
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 482
diff changeset
450