Mercurial > dropbear

annotate svr-chansession.c @ 312:24056a5eb75b ucc-axis-hack

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author matt-ucc@ucc.asn.au
date Sun, 26 Mar 2006 13:05:31 +0000
parents 6e5f8ce73bf2
children fabcee551349
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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 "packet.h"
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27 #include "buffer.h"
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28 #include "session.h"
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29 #include "dbutil.h"
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30 #include "channel.h"
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31 #include "chansession.h"
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32 #include "sshpty.h"
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33 #include "termcodes.h"
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34 #include "ssh.h"
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35 #include "random.h"
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36 #include "utmp.h"
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37 #include "x11fwd.h"
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38 #include "agentfwd.h"
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39 #include "runopts.h"
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40
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41 /* Handles sessions (either shells or programs) requested by the client */
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42
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43 static int sessioncommand(struct Channel *channel, struct ChanSess *chansess,
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44 int iscmd, int issubsys);
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45 static int sessionpty(struct ChanSess * chansess);
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46 static int sessionsignal(struct ChanSess *chansess);
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47 static int noptycommand(struct Channel *channel, struct ChanSess *chansess);
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48 static int ptycommand(struct Channel *channel, struct ChanSess *chansess);
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49 static int sessionwinchange(struct ChanSess *chansess);
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50 static void execchild(struct ChanSess *chansess);
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51 static void addchildpid(struct ChanSess *chansess, pid_t pid);
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52 static void sesssigchild_handler(int val);
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53 static void closechansess(struct Channel *channel);
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54 static int newchansess(struct Channel *channel);
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55 static void chansessionrequest(struct Channel *channel);
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56
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57 static void send_exitsignalstatus(struct Channel *channel);
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58 static void send_msg_chansess_exitstatus(struct Channel * channel,
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59 struct ChanSess * chansess);
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60 static void send_msg_chansess_exitsignal(struct Channel * channel,
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61 struct ChanSess * chansess);
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62 static int sesscheckclose(struct Channel *channel);
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63 static void get_termmodes(struct ChanSess *chansess);
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64
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65 static void serial_connect(struct Channel *channel);
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66 static int sessionbreak(struct ChanSess *chansess);
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67
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68 /* required to clear environment */
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69 extern char** environ;
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70
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71 static int sesscheckclose(struct Channel *channel) {
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72 struct ChanSess *chansess = (struct ChanSess*)channel->typedata;
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73 return chansess->exit.exitpid >= 0;
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74 }
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75
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76 /* Handler for childs exiting, store the state for return to the client */
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77
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78 /* There's a particular race we have to watch out for: if the forked child
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79 * executes, exits, and this signal-handler is called, all before the parent
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80 * gets to run, then the childpids[] array won't have the pid in it. Hence we
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81 * use the svr_ses.lastexit struct to hold the exit, which is then compared by
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82 * the parent when it runs. This work correctly at least in the case of a
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83 * single shell spawned (ie the usual case) */
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84 static void sesssigchild_handler(int UNUSED(dummy)) {
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85
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86 int status;
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87 pid_t pid;
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88 unsigned int i;
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89 struct sigaction sa_chld;
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90 struct exitinfo *exit = NULL;
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91
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92 TRACE(("enter sigchld handler"))
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93 while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
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94 /* find the corresponding chansess */
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95 for (i = 0; i < svr_ses.childpidsize; i++) {
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96 if (svr_ses.childpids[i].pid == pid) {
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97
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98 exit = &svr_ses.childpids[i].chansess->exit;
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99 break;
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100 }
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101 }
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102
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103 /* If the pid wasn't matched, then we might have hit the race mentioned
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104 * above. So we just store the info for the parent to deal with */
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105 if (i == svr_ses.childpidsize) {
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106 exit = &svr_ses.lastexit;
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107 }
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108
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109 exit->exitpid = pid;
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110 if (WIFEXITED(status)) {
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111 exit->exitstatus = WEXITSTATUS(status);
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112 }
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113 if (WIFSIGNALED(status)) {
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114 exit->exitsignal = WTERMSIG(status);
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115 #if !defined(AIX) && defined(WCOREDUMP)
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116 exit->exitcore = WCOREDUMP(status);
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117 #else
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118 exit->exitcore = 0;
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119 #endif
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120 } else {
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121 /* we use this to determine how pid exited */
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122 exit->exitsignal = -1;
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123 }
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124 exit = NULL;
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125 }
130
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126
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127
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128 sa_chld.sa_handler = sesssigchild_handler;
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129 sa_chld.sa_flags = SA_NOCLDSTOP;
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130 sigaction(SIGCHLD, &sa_chld, NULL);
165
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131 TRACE(("leave sigchld handler"))
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132 }
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133
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134 /* send the exit status or the signal causing termination for a session */
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135 /* XXX server */
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136 static void send_exitsignalstatus(struct Channel *channel) {
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137
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138 struct ChanSess *chansess = (struct ChanSess*)channel->typedata;
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139
130
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140 if (chansess->exit.exitpid >= 0) {
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141 if (chansess->exit.exitsignal > 0) {
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142 send_msg_chansess_exitsignal(channel, chansess);
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143 } else {
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144 send_msg_chansess_exitstatus(channel, chansess);
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145 }
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146 }
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147 }
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148
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149 /* send the exitstatus to the client */
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150 static void send_msg_chansess_exitstatus(struct Channel * channel,
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151 struct ChanSess * chansess) {
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152
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153 dropbear_assert(chansess->exit.exitpid != -1);
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154 dropbear_assert(chansess->exit.exitsignal == -1);
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155
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156 CHECKCLEARTOWRITE();
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157
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158 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST);
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159 buf_putint(ses.writepayload, channel->remotechan);
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160 buf_putstring(ses.writepayload, "exit-status", 11);
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161 buf_putbyte(ses.writepayload, 0); /* boolean FALSE */
130
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162 buf_putint(ses.writepayload, chansess->exit.exitstatus);
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163
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164 encrypt_packet();
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165
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166 }
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167
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168 /* send the signal causing the exit to the client */
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169 static void send_msg_chansess_exitsignal(struct Channel * channel,
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170 struct ChanSess * chansess) {
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171
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172 int i;
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173 char* signame = NULL;
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174
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175 dropbear_assert(chansess->exit.exitpid != -1);
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176 dropbear_assert(chansess->exit.exitsignal > 0);
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177
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178 CHECKCLEARTOWRITE();
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179
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180 /* we check that we can match a signal name, otherwise
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181 * don't send anything */
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182 for (i = 0; signames[i].name != NULL; i++) {
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183 if (signames[i].signal == chansess->exit.exitsignal) {
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184 signame = signames[i].name;
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185 break;
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186 }
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187 }
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188
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189 if (signame == NULL) {
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190 return;
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191 }
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192
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193 buf_putbyte(ses.writepayload, SSH_MSG_CHANNEL_REQUEST);
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194 buf_putint(ses.writepayload, channel->remotechan);
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195 buf_putstring(ses.writepayload, "exit-signal", 11);
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196 buf_putbyte(ses.writepayload, 0); /* boolean FALSE */
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197 buf_putstring(ses.writepayload, signame, strlen(signame));
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198 buf_putbyte(ses.writepayload, chansess->exit.exitcore);
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199 buf_putstring(ses.writepayload, "", 0); /* error msg */
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200 buf_putstring(ses.writepayload, "", 0); /* lang */
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201
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202 encrypt_packet();
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203 }
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204
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205 /* set up a session channel */
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206 static int newchansess(struct Channel *channel) {
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207
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208 struct ChanSess *chansess;
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209
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210 dropbear_assert(channel->typedata == NULL);
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211
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212 chansess = (struct ChanSess*)m_malloc(sizeof(struct ChanSess));
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213 chansess->cmd = NULL;
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214 chansess->pid = 0;
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215
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216 /* pty details */
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217 chansess->master = -1;
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218 chansess->slave = -1;
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219 chansess->tty = NULL;
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220 chansess->term = NULL;
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221
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222 chansess->exit.exitpid = -1;
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223
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224 channel->typedata = chansess;
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225
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226 #ifndef DISABLE_X11FWD
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227 chansess->x11listener = NULL;
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228 chansess->x11authprot = NULL;
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229 chansess->x11authcookie = NULL;
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230 #endif
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231
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232 #ifndef DISABLE_AGENTFWD
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233 chansess->agentlistener = NULL;
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234 chansess->agentfile = NULL;
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235 chansess->agentdir = NULL;
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236 #endif
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237
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238 return 0;
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239
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240 }
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241
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242 /* clean a session channel */
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243 static void closechansess(struct Channel *channel) {
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244
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245 struct ChanSess *chansess;
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246 unsigned int i;
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247 struct logininfo *li;
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248
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249 chansess = (struct ChanSess*)channel->typedata;
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250
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251 send_exitsignalstatus(channel);
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252
165
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253 TRACE(("enter closechansess"))
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254 if (chansess == NULL) {
165
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255 TRACE(("leave closechansess: chansess == NULL"))
4
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256 return;
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257 }
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258
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259 m_free(chansess->cmd);
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260 m_free(chansess->term);
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261
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262 if (chansess->tty) {
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263 /* write the utmp/wtmp login record */
33
f789045062e6 Progressing client support
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diff changeset
264 li = login_alloc_entry(chansess->pid, ses.authstate.username,
4
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265 ses.remotehost, chansess->tty);
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266 login_logout(li);
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267 login_free_entry(li);
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268
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269 pty_release(chansess->tty);
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270 m_free(chansess->tty);
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271 }
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272
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273 #ifndef DISABLE_X11FWD
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274 x11cleanup(chansess);
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275 #endif
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276
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277 #ifndef DISABLE_AGENTFWD
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278 agentcleanup(chansess);
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279 #endif
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280
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281 /* clear child pid entries */
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282 for (i = 0; i < svr_ses.childpidsize; i++) {
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283 if (svr_ses.childpids[i].chansess == chansess) {
241
c5d3ef11155f * use own assertions which should get logged properly
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284 dropbear_assert(svr_ses.childpids[i].pid > 0);
165
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285 TRACE(("closing pid %d", svr_ses.childpids[i].pid))
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286 TRACE(("exitpid = %d", chansess->exit.exitpid))
4
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287 svr_ses.childpids[i].pid = -1;
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288 svr_ses.childpids[i].chansess = NULL;
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289 }
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290 }
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291
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292 m_free(chansess);
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293
165
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294 TRACE(("leave closechansess"))
4
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295 }
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296
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297 /* Handle requests for a channel. These can be execution requests,
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298 * or x11/authagent forwarding. These are passed to appropriate handlers */
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299 static void chansessionrequest(struct Channel *channel) {
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300
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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301 unsigned char * type = NULL;
4
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302 unsigned int typelen;
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diff changeset
303 unsigned char wantreply;
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304 int ret = 1;
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305 struct ChanSess *chansess;
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306
165
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307 TRACE(("enter chansessionrequest"))
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308
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309 type = buf_getstring(ses.payload, &typelen);
179
161557a9dde8 * fix longstanding bug with connections being closed on failure to
Matt Johnston <matt@ucc.asn.au>
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310 wantreply = buf_getbool(ses.payload);
4
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311
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312 if (typelen > MAX_NAME_LEN) {
165
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parents: 133
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313 TRACE(("leave chansessionrequest: type too long")) /* XXX send error?*/
4
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314 goto out;
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315 }
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316
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diff changeset
317 chansess = (struct ChanSess*)channel->typedata;
241
c5d3ef11155f * use own assertions which should get logged properly
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parents: 208
diff changeset
318 dropbear_assert(chansess != NULL);
165
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diff changeset
319 TRACE(("type is %s", type))
4
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320
308
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parents: 307
diff changeset
321 #if 0
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diff changeset
322 hack
4
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323 if (strcmp(type, "window-change") == 0) {
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324 ret = sessionwinchange(chansess);
308
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diff changeset
325 } else
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diff changeset
326 #endif
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327 if (strcmp(type, "shell") == 0) {
4
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328 ret = sessioncommand(channel, chansess, 0, 0);
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329 } else if (strcmp(type, "pty-req") == 0) {
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330 ret = sessionpty(chansess);
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331 } else if (strcmp(type, "exec") == 0) {
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332 ret = sessioncommand(channel, chansess, 1, 0);
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333 } else if (strcmp(type, "subsystem") == 0) {
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334 ret = sessioncommand(channel, chansess, 1, 1);
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335 #ifndef DISABLE_X11FWD
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336 } else if (strcmp(type, "x11-req") == 0) {
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337 ret = x11req(chansess);
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diff changeset
338 #endif
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339 #ifndef DISABLE_AGENTFWD
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340 } else if (strcmp(type, "[email protected]") == 0) {
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parents:
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341 ret = agentreq(chansess);
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parents:
diff changeset
342 #endif
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343 } else if (strcmp(type, "signal") == 0) {
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344 ret = sessionsignal(chansess);
308
6e5f8ce73bf2 add break handler
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parents: 307
diff changeset
345 } else if (strcmp(type, "break") == 0) {
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parents: 307
diff changeset
346 ret = sessionbreak(chansess);
4
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347 } else {
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parents:
diff changeset
348 /* etc, todo "env", "subsystem" */
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parents:
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349 }
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350
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diff changeset
351 out:
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352
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diff changeset
353 if (wantreply) {
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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parents: 62
diff changeset
354 if (ret == DROPBEAR_SUCCESS) {
4
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diff changeset
355 send_msg_channel_success(channel);
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parents:
diff changeset
356 } else {
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diff changeset
357 send_msg_channel_failure(channel);
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358 }
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diff changeset
359 }
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diff changeset
360
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diff changeset
361 m_free(type);
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 133
diff changeset
362 TRACE(("leave chansessionrequest"))
4
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parents:
diff changeset
363 }
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diff changeset
364
308
6e5f8ce73bf2 add break handler
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parents: 307
diff changeset
365 static int sessionbreak(struct ChanSess *chansess) {
6e5f8ce73bf2 add break handler
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parents: 307
diff changeset
366
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diff changeset
367 int v;
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diff changeset
368 char* argv[3];
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diff changeset
369 TRACE(("break!!!!"))
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parents: 307
diff changeset
370
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parents: 307
diff changeset
371 v = fork();
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parents: 307
diff changeset
372 if (v < 0) {
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parents: 307
diff changeset
373 dropbear_exit("failed for for break");
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parents: 307
diff changeset
374 } else if (v == 0) {
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parents: 307
diff changeset
375 /* child */
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parents: 307
diff changeset
376 argv[0] = "mfctl";
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parents: 307
diff changeset
377 argv[1] = "b";
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diff changeset
378 argv[2] = NULL;
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parents: 307
diff changeset
379
6e5f8ce73bf2 add break handler
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parents: 307
diff changeset
380 execv("/etc/mfctl", argv);
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parents: 307
diff changeset
381 dropbear_log(LOG_INFO, "break failed, eh?");
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parents: 307
diff changeset
382
6e5f8ce73bf2 add break handler
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parents: 307
diff changeset
383 } else {
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parents: 307
diff changeset
384 /* parent - do nothing */
6e5f8ce73bf2 add break handler
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parents: 307
diff changeset
385 }
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parents: 307
diff changeset
386
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diff changeset
387 return DROPBEAR_SUCCESS;
6e5f8ce73bf2 add break handler
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parents: 307
diff changeset
388 }
4
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diff changeset
389
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
390 /* Send a signal to a session's process as requested by the client*/
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
391 static int sessionsignal(struct ChanSess *chansess) {
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parents:
diff changeset
392
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parents:
diff changeset
393 int sig = 0;
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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parents: 62
diff changeset
394 unsigned char* signame = NULL;
4
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parents:
diff changeset
395 int i;
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parents:
diff changeset
396
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parents:
diff changeset
397 if (chansess->pid == 0) {
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parents:
diff changeset
398 /* haven't got a process pid yet */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
399 return DROPBEAR_FAILURE;
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parents:
diff changeset
400 }
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
401
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
402 signame = buf_getstring(ses.payload, NULL);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
403
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
404 i = 0;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
405 while (signames[i].name != 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
406 if (strcmp(signames[i].name, signame) == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
407 sig = signames[i].signal;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
408 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
409 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
410 i++;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
411 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
412
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
413 m_free(signame);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
414
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
415 if (sig == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
416 /* failed */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
417 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
418 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
419
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
420 if (kill(chansess->pid, sig) < 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
421 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
422 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
423
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
424 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
425 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
426
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
427 /* Let the process know that the window size has changed, as notified from the
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
428 * client. Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
429 static int sessionwinchange(struct ChanSess *chansess) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
430
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
431 int termc, termr, termw, termh;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
432
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
433 if (chansess->master < 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
434 /* haven't got a pty yet */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
435 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
436 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
437
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
438 termc = buf_getint(ses.payload);
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
439 termr = buf_getint(ses.payload);
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
440 termw = buf_getint(ses.payload);
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
441 termh = buf_getint(ses.payload);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
442
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
443 pty_change_window_size(chansess->master, termr, termc, termw, termh);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
444
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
445 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
446 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
447
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
448 static void get_termmodes(struct ChanSess *chansess) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
449
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
450 struct termios termio;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
451 unsigned char opcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
452 unsigned int value;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
453 const struct TermCode * termcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
454 unsigned int len;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
455
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
456 TRACE(("enter get_termmodes"))
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
457
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
458 /* Term modes */
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
459 /* We'll ignore errors and continue if we can't set modes.
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
460 * We're ignoring baud rates since they seem evil */
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
461 if (tcgetattr(chansess->master, &termio) == -1) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
462 return;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
463 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
464
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
465 len = buf_getint(ses.payload);
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
466 TRACE(("term mode str %d p->l %d p->p %d",
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
467 len, ses.payload->len , ses.payload->pos));
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
468 if (len != ses.payload->len - ses.payload->pos) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
469 dropbear_exit("bad term mode string");
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
470 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
471
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
472 if (len == 0) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
473 TRACE(("leave get_termmodes: empty terminal modes string"))
171
8e68dbe8687b put back 'return;' on empty terminal mode strings which was erroneously
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
474 return;
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
475 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
476
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
477 while (((opcode = buf_getbyte(ses.payload)) != 0x00) && opcode <= 159) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
478
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
479 /* must be before checking type, so that value is consumed even if
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
480 * we don't use it */
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
481 value = buf_getint(ses.payload);
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
482
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
483 /* handle types of code */
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
484 if (opcode > MAX_TERMCODE) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
485 continue;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
486 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
487 termcode = &termcodes[(unsigned int)opcode];
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
488
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
489
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
490 switch (termcode->type) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
491
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
492 case TERMCODE_NONE:
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
493 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
494
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
495 case TERMCODE_CONTROLCHAR:
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
496 termio.c_cc[termcode->mapcode] = value;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
497 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
498
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
499 case TERMCODE_INPUT:
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
500 if (value) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
501 termio.c_iflag |= termcode->mapcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
502 } else {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
503 termio.c_iflag &= ~(termcode->mapcode);
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
504 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
505 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
506
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
507 case TERMCODE_OUTPUT:
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
508 if (value) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
509 termio.c_oflag |= termcode->mapcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
510 } else {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
511 termio.c_oflag &= ~(termcode->mapcode);
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
512 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
513 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
514
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
515 case TERMCODE_LOCAL:
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
516 if (value) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
517 termio.c_lflag |= termcode->mapcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
518 } else {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
519 termio.c_lflag &= ~(termcode->mapcode);
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
520 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
521 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
522
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
523 case TERMCODE_CONTROL:
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
524 if (value) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
525 termio.c_cflag |= termcode->mapcode;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
526 } else {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
527 termio.c_cflag &= ~(termcode->mapcode);
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
528 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
529 break;
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
530
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
531 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
532 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
533 if (tcsetattr(chansess->master, TCSANOW, &termio) < 0) {
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
534 dropbear_log(LOG_INFO, "error setting terminal attributes");
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
535 }
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
536 TRACE(("leave get_termmodes"))
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
537 }
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
538
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
539 /* Set up a session pty which will be used to execute the shell or program.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
540 * The pty is allocated now, and kept for when the shell/program executes.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
541 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
542 static int sessionpty(struct ChanSess * chansess) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
543
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
544 unsigned int termlen;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
545 unsigned char namebuf[65];
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
546
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
547 TRACE(("enter sessionpty"))
308
6e5f8ce73bf2 add break handler
matt-ucc@ucc.asn.au
parents: 307
diff changeset
548 /* Axis hack */
6e5f8ce73bf2 add break handler
matt-ucc@ucc.asn.au
parents: 307
diff changeset
549 TRACE(("this does nothing"))
6e5f8ce73bf2 add break handler
matt-ucc@ucc.asn.au
parents: 307
diff changeset
550 #if 0
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
551 chansess->term = buf_getstring(ses.payload, &termlen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
552 if (termlen > MAX_TERM_LEN) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
553 /* TODO send disconnect ? */
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
554 TRACE(("leave sessionpty: term len too long"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
555 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
556 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
557
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
558 /* allocate the pty */
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 96
diff changeset
559 if (chansess->master != -1) {
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 96
diff changeset
560 dropbear_exit("multiple pty requests");
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 96
diff changeset
561 }
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
562 if (pty_allocate(&chansess->master, &chansess->slave, namebuf, 64) == 0) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
563 TRACE(("leave sessionpty: failed to allocate pty"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
564 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
565 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
566
11
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 9
diff changeset
567 chansess->tty = (char*)m_strdup(namebuf);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
568 if (!chansess->tty) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
569 dropbear_exit("out of memory"); /* TODO disconnect */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
570 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
571
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
572 pty_setowner(ses.authstate.pw, chansess->tty);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
573
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
574 /* Set up the rows/col counts */
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
575 sessionwinchange(chansess);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
576
40
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
577 /* Read the terminal modes */
b4874d772210 - Added terminal mode handling etc for the client, and window change
Matt Johnston <matt@ucc.asn.au>
parents: 33
diff changeset
578 get_termmodes(chansess);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
579
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
580 TRACE(("leave sessionpty"))
308
6e5f8ce73bf2 add break handler
matt-ucc@ucc.asn.au
parents: 307
diff changeset
581 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
582 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
583 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
584
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
585 /* Handle a command request from the client. This is used for both shell
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
586 * and command-execution requests, and passes the command to
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
587 * noptycommand or ptycommand as appropriate.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
588 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
589 static int sessioncommand(struct Channel *channel, struct ChanSess *chansess,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
590 int iscmd, int issubsys) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
591
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
592 unsigned int cmdlen;
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
593 int ret;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
594
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
595 TRACE(("enter sessioncommand"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
596
306
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
597 /* Axis hack */
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
598 if (strcmp(ses.authstate.username, SERIAL_USER) == 0) {
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
599 serial_connect(channel);
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
600 return DROPBEAR_SUCCESS;
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
601 }
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
602
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
603 if (chansess->cmd != NULL) {
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
604 /* Note that only one command can _succeed_. The client might try
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
605 * one command (which fails), then try another. Ie fallback
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
606 * from sftp to scp */
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
607 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
608 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
609
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
610 if (iscmd) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
611 /* "exec" */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
612 chansess->cmd = buf_getstring(ses.payload, &cmdlen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
613
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
614 if (cmdlen > MAX_CMD_LEN) {
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
615 m_free(chansess->cmd);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
616 /* TODO - send error - too long ? */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
617 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
618 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
619 if (issubsys) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
620 #ifdef SFTPSERVER_PATH
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
621 if ((cmdlen == 4) && strncmp(chansess->cmd, "sftp", 4) == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
622 m_free(chansess->cmd);
11
f76c9389e9e0 Mostly done with the listener changeover
Matt Johnston <matt@ucc.asn.au>
parents: 9
diff changeset
623 chansess->cmd = m_strdup(SFTPSERVER_PATH);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
624 } else
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
625 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
626 {
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
627 m_free(chansess->cmd);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
628 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
629 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
630 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
631 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
632
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
633 if (chansess->term == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
634 /* no pty */
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
635 ret = noptycommand(channel, chansess);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
636 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
637 /* want pty */
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
638 ret = ptycommand(channel, chansess);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
639 }
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
640
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
641 if (ret == DROPBEAR_FAILURE) {
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
642 m_free(chansess->cmd);
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
643 }
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
644 return ret;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
645 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
646
306
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
647 static void serial_connect(struct Channel *channel) {
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
648
307
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
649 int serial_fd;
312
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
650 struct termios options;
306
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
651
307
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
652 TRACE(("enter serial_connect"))
306
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
653
307
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
654 serial_fd = open(SERIAL_DEVICE, O_RDWR | O_NOCTTY, 0);
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
655 TRACE(("serial_fd = %d", serial_fd))
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
656 if (serial_fd < 0) {
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
657 TRACE(("errno %d", errno))
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
658 dropbear_exit("Failed opening '%s': %d %s", SERIAL_DEVICE,
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
659 errno, strerror(errno));
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
660 }
306
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
661
307
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
662 TRACE(("success serial_connect"))
312
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
663
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
664 /* set some serial options. XXX needs attention */
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
665 tcgetattr(serial_fd, &options);
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
666
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
667 cfsetispeed(&options, B9600);
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
668 cfsetospeed(&options, B9600);
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
669
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
670 options.c_cflag &= ~CSIZE; /* Mask the character size bits */
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
671 options.c_cflag |= CS8; /* Select 8 data bits */
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
672 options.c_cflag &= ~PARENB;
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
673 options.c_cflag &= ~CSTOPB;
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
674 options.c_cflag &= ~CSIZE;
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
675
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
676 options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
677 options.c_iflag |= (INPCK | ISTRIP);
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
678
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
679 tcsetattr(serial_fd, TCSANOW, &options);
24056a5eb75b serial works better. enable DSS.
matt-ucc@ucc.asn.au
parents: 308
diff changeset
680
306
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
681
307
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
682 ses.maxfd = MAX(serial_fd, channel->writefd);
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
683 setnonblocking(serial_fd);
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
684
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
685 channel->writefd = serial_fd;
24b19535264b progress for serial logins
matt-ucc@ucc.asn.au
parents: 306
diff changeset
686 channel->readfd = serial_fd;
306
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
687 }
5d5bbca82aba Use password file, add serial option
Matt Johnston <matt@ucc.asn.au>
parents: 279
diff changeset
688
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
689 /* Execute a command and set up redirection of stdin/stdout/stderr without a
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
690 * pty.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
691 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
692 static int noptycommand(struct Channel *channel, struct ChanSess *chansess) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
693
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
694 int infds[2];
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
695 int outfds[2];
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
696 int errfds[2];
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
697 pid_t pid;
130
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
698 unsigned int i;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
699
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
700 TRACE(("enter noptycommand"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
701
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
702 /* redirect stdin/stdout/stderr */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
703 if (pipe(infds) != 0)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
704 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
705 if (pipe(outfds) != 0)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
706 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
707 if (pipe(errfds) != 0)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
708 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
709
273
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
710 #ifdef __uClinux__
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
711 pid = vfork();
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
712 #else
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
713 pid = fork();
273
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
714 #endif
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
715
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
716 if (pid < 0)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
717 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
718
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
719 if (!pid) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
720 /* child */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
721
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
722 /* redirect stdin/stdout */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
723 #define FDIN 0
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
724 #define FDOUT 1
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
725 if ((dup2(infds[FDIN], STDIN_FILENO) < 0) ||
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
726 (dup2(outfds[FDOUT], STDOUT_FILENO) < 0) ||
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
727 (dup2(errfds[FDOUT], STDERR_FILENO) < 0)) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
728 TRACE(("leave noptycommand: error redirecting FDs"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
729 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
730 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
731
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
732 close(infds[FDOUT]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
733 close(infds[FDIN]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
734 close(outfds[FDIN]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
735 close(outfds[FDOUT]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
736 close(errfds[FDIN]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
737 close(errfds[FDOUT]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
738
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
739 execchild(chansess);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
740 /* not reached */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
741
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
742 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
743 /* parent */
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
744 TRACE(("continue noptycommand: parent"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
745 chansess->pid = pid;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
746
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
747 addchildpid(chansess, pid);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
748
130
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
749 if (svr_ses.lastexit.exitpid != -1) {
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
750 /* The child probably exited and the signal handler triggered
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
751 * possibly before we got around to adding the childpid. So we fill
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
752 * out it's data manually */
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
753 for (i = 0; i < svr_ses.childpidsize; i++) {
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
754 if (svr_ses.childpids[i].pid == pid) {
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
755 svr_ses.childpids[i].chansess->exit = svr_ses.lastexit;
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
756 svr_ses.lastexit.exitpid = -1;
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
757 }
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
758 }
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
759 }
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
760
154c8d5a6d1e propagate of 82bb923d0154750ef716b66b498561f882891946 and f51a272341ee12268fe7028bc2f2bad66c603069 from branch 'matt.dbclient.work' to 'matt.dbclient.rez'
Matt Johnston <matt@ucc.asn.au>
parents: 115
diff changeset
761
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
762 close(infds[FDIN]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
763 close(outfds[FDOUT]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
764 close(errfds[FDOUT]);
253
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 241
diff changeset
765 channel->writefd = infds[FDOUT];
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 241
diff changeset
766 channel->readfd = outfds[FDIN];
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
767 channel->errfd = errfds[FDIN];
253
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 241
diff changeset
768 ses.maxfd = MAX(ses.maxfd, channel->writefd);
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 241
diff changeset
769 ses.maxfd = MAX(ses.maxfd, channel->readfd);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
770 ses.maxfd = MAX(ses.maxfd, channel->errfd);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
771
253
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 241
diff changeset
772 setnonblocking(channel->readfd);
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 241
diff changeset
773 setnonblocking(channel->writefd);
109
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b
Matt Johnston <matt@ucc.asn.au>
parents: 108
diff changeset
774 setnonblocking(channel->errfd);
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b
Matt Johnston <matt@ucc.asn.au>
parents: 108
diff changeset
775
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
776 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
777 #undef FDIN
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
778 #undef FDOUT
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
779
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
780 TRACE(("leave noptycommand"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
781 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
782 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
783
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
784 /* Execute a command or shell within a pty environment, and set up
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
785 * redirection as appropriate.
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
786 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
787 static int ptycommand(struct Channel *channel, struct ChanSess *chansess) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
788
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
789 pid_t pid;
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
790 struct logininfo *li = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
791 #ifdef DO_MOTD
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
792 buffer * motdbuf = NULL;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
793 int len;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
794 struct stat sb;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
795 char *hushpath = NULL;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
796 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
797
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
798 TRACE(("enter ptycommand"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
799
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
800 /* we need to have a pty allocated */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
801 if (chansess->master == -1 || chansess->tty == NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
802 dropbear_log(LOG_WARNING, "no pty was allocated, couldn't execute");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
803 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
804 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
805
273
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
806 #ifdef __uClinux__
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
807 pid = vfork();
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
808 #else
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
809 pid = fork();
273
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
810 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
811 if (pid < 0)
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
812 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
813
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
814 if (pid == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
815 /* child */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
816
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
817 /* redirect stdin/stdout/stderr */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
818 close(chansess->master);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
819
308
6e5f8ce73bf2 add break handler
matt-ucc@ucc.asn.au
parents: 307
diff changeset
820 /* hack
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
821 pty_make_controlling_tty(&chansess->slave, chansess->tty);
308
6e5f8ce73bf2 add break handler
matt-ucc@ucc.asn.au
parents: 307
diff changeset
822 */
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
823
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
824 if ((dup2(chansess->slave, STDIN_FILENO) < 0) ||
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
825 (dup2(chansess->slave, STDERR_FILENO) < 0) ||
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
826 (dup2(chansess->slave, STDOUT_FILENO) < 0)) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
827 TRACE(("leave ptycommand: error redirecting filedesc"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
828 return DROPBEAR_FAILURE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
829 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
830
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
831 close(chansess->slave);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
832
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
833 /* write the utmp/wtmp login record - must be after changing the
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
834 * terminal used for stdout with the dup2 above */
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
835 li= login_alloc_entry(getpid(), ses.authstate.username,
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
836 ses.remotehost, chansess->tty);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
837 login_login(li);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
838 login_free_entry(li);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
839
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
840 m_free(chansess->tty);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
841
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
842 #ifdef DO_MOTD
24
469950e86d0f switching to global vars
Matt Johnston <matt@ucc.asn.au>
parents: 11
diff changeset
843 if (svr_opts.domotd) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
844 /* don't show the motd if ~/.hushlogin exists */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
845
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
846 /* 11 == strlen("/hushlogin\0") */
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
847 len = strlen(ses.authstate.pw->pw_dir) + 11;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
848
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
849 hushpath = m_malloc(len);
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
850 snprintf(hushpath, len, "%s/hushlogin", ses.authstate.pw->pw_dir);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
851
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
852 if (stat(hushpath, &sb) < 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
853 /* more than a screenful is stupid IMHO */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
854 motdbuf = buf_new(80 * 25);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
855 if (buf_readfile(motdbuf, MOTD_FILENAME) == DROPBEAR_SUCCESS) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
856 buf_setpos(motdbuf, 0);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
857 while (motdbuf->pos != motdbuf->len) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
858 len = motdbuf->len - motdbuf->pos;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
859 len = write(STDOUT_FILENO,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
860 buf_getptr(motdbuf, len), len);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
861 buf_incrpos(motdbuf, len);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
862 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
863 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
864 buf_free(motdbuf);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
865 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
866 m_free(hushpath);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
867 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
868 #endif /* DO_MOTD */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
869
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
870 execchild(chansess);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
871 /* not reached */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
872
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
873 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
874 /* parent */
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
875 TRACE(("continue ptycommand: parent"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
876 chansess->pid = pid;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
877
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
878 /* add a child pid */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
879 addchildpid(chansess, pid);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
880
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
881 close(chansess->slave);
253
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 241
diff changeset
882 channel->writefd = chansess->master;
84925eceeb13 * rename infd/outfd to writefd/readfd, to avoid confusion
Matt Johnston <matt@ucc.asn.au>
parents: 241
diff changeset
883 channel->readfd = chansess->master;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
884 /* don't need to set stderr here */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
885 ses.maxfd = MAX(ses.maxfd, chansess->master);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
886
109
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b
Matt Johnston <matt@ucc.asn.au>
parents: 108
diff changeset
887 setnonblocking(chansess->master);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
888
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
889 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
890
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 133
diff changeset
891 TRACE(("leave ptycommand"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
892 return DROPBEAR_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
893 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
894
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
895 /* Add the pid of a child to the list for exit-handling */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
896 static void addchildpid(struct ChanSess *chansess, pid_t pid) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
897
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
898 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
899 for (i = 0; i < svr_ses.childpidsize; i++) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
900 if (svr_ses.childpids[i].pid == -1) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
901 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
902 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
903 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
904
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
905 /* need to increase size */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
906 if (i == svr_ses.childpidsize) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
907 svr_ses.childpids = (struct ChildPid*)m_realloc(svr_ses.childpids,
264
541b14504870 * fix incorrect array sizing
Matt Johnston <matt@ucc.asn.au>
parents: 253
diff changeset
908 sizeof(struct ChildPid) * (svr_ses.childpidsize+1));
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
909 svr_ses.childpidsize++;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
910 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
911
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
912 svr_ses.childpids[i].pid = pid;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
913 svr_ses.childpids[i].chansess = chansess;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
914
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
915 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
916
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
917 /* Clean up, drop to user privileges, set up the environment and execute
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
918 * the command/shell. This function does not return. */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
919 static void execchild(struct ChanSess *chansess) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
920
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
921 char *argv[4];
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
922 char * usershell = NULL;
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
923 char * baseshell = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
924 unsigned int i;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
925
273
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
926 /* with uClinux we'll have vfork()ed, so don't want to overwrite the
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
927 * hostkey. can't think of a workaround to clear it */
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
928 #ifndef __uClinux__
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
929 /* wipe the hostkey */
24
469950e86d0f switching to global vars
Matt Johnston <matt@ucc.asn.au>
parents: 11
diff changeset
930 sign_key_free(svr_opts.hostkey);
469950e86d0f switching to global vars
Matt Johnston <matt@ucc.asn.au>
parents: 11
diff changeset
931 svr_opts.hostkey = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
932
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
933 /* overwrite the prng state */
272
3be7ae2e8dfa Only read /dev/random once when the program starts
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
934 reseedrandom();
273
02a80ce2ead4 Merge of the uClinux-dist patch, should work in inetd mode
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
935 #endif
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
936
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
937 /* close file descriptors except stdin/stdout/stderr
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
938 * Need to be sure FDs are closed here to avoid reading files as root */
208
1a52846ec11f * fix off-by-one closing open FDs
Matt Johnston <matt@ucc.asn.au>
parents: 204
diff changeset
939 for (i = 3; i <= (unsigned int)ses.maxfd; i++) {
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 264
diff changeset
940 m_close(i);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
941 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
942
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
943 /* clear environment */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
944 /* if we're debugging using valgrind etc, we need to keep the LD_PRELOAD
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
945 * etc. This is hazardous, so should only be used for debugging. */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
946 #ifndef DEBUG_VALGRIND
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
947 #ifdef HAVE_CLEARENV
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
948 clearenv();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
949 #else /* don't HAVE_CLEARENV */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
950 /* Yay for posix. */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
951 if (environ) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
952 environ[0] = NULL;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
953 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
954 #endif /* HAVE_CLEARENV */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
955 #endif /* DEBUG_VALGRIND */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
956
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
957 /* We can only change uid/gid as root ... */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
958 if (getuid() == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
959
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
960 if ((setgid(ses.authstate.pw->pw_gid) < 0) ||
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
961 (initgroups(ses.authstate.pw->pw_name,
204
675f7bf3c391 Seperate out exit errors from setgid()/initgroups(), and errors from setuid(),
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
962 ses.authstate.pw->pw_gid) < 0)) {
675f7bf3c391 Seperate out exit errors from setgid()/initgroups(), and errors from setuid(),
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
963 dropbear_exit("error changing user group");
675f7bf3c391 Seperate out exit errors from setgid()/initgroups(), and errors from setuid(),
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
964 }
675f7bf3c391 Seperate out exit errors from setgid()/initgroups(), and errors from setuid(),
Matt Johnston <matt@ucc.asn.au>
parents: 179
diff changeset
965 if (setuid(ses.authstate.pw->pw_uid) < 0) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
966 dropbear_exit("error changing user");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
967 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
968 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
969 /* ... but if the daemon is the same uid as the requested uid, we don't
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
970 * need to */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
971
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
972 /* XXX - there is a minor issue here, in that if there are multiple
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
973 * usernames with the same uid, but differing groups, then the
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
974 * differing groups won't be set (as with initgroups()). The solution
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
975 * is for the sysadmin not to give out the UID twice */
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
976 if (getuid() != ses.authstate.pw->pw_uid) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
977 dropbear_exit("couldn't change user as non-root");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
978 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
979 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
980
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
981 /* an empty shell should be interpreted as "/bin/sh" */
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
982 if (ses.authstate.pw->pw_shell[0] == '\0') {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
983 usershell = "/bin/sh";
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
984 } else {
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
985 usershell = ses.authstate.pw->pw_shell;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
986 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
987
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
988 /* set env vars */
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
989 addnewvar("USER", ses.authstate.pw->pw_name);
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
990 addnewvar("LOGNAME", ses.authstate.pw->pw_name);
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
991 addnewvar("HOME", ses.authstate.pw->pw_dir);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
992 addnewvar("SHELL", usershell);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
993 if (chansess->term != NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
994 addnewvar("TERM", chansess->term);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
995 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
996
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
997 /* change directory */
33
f789045062e6 Progressing client support
Matt Johnston <matt@ucc.asn.au>
parents: 24
diff changeset
998 if (chdir(ses.authstate.pw->pw_dir) < 0) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
999 dropbear_exit("error changing directory");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1000 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1001
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1002 #ifndef DISABLE_X11FWD
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1003 /* set up X11 forwarding if enabled */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1004 x11setauth(chansess);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1005 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1006 #ifndef DISABLE_AGENTFWD
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1007 /* set up agent env variable */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1008 agentset(chansess);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1009 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1010
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
1011 /* Re-enable SIGPIPE for the executed process */
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
1012 if (signal(SIGPIPE, SIG_DFL) == SIG_ERR) {
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
1013 dropbear_exit("signal() error");
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
1014 }
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
1015
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1016 baseshell = basename(usershell);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1017
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1018 if (chansess->cmd != NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1019 argv[0] = baseshell;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1020 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1021 /* a login shell should be "-bash" for "/bin/bash" etc */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1022 int len = strlen(baseshell) + 2; /* 2 for "-" */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1023 argv[0] = (char*)m_malloc(len);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1024 snprintf(argv[0], len, "-%s", baseshell);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1025 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1026
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1027 if (chansess->cmd != NULL) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1028 argv[1] = "-c";
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1029 argv[2] = chansess->cmd;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1030 argv[3] = NULL;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1031 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1032 /* construct a shell of the form "-bash" etc */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1033 argv[1] = NULL;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1034 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1035
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1036 execv(usershell, argv);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1037
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1038 /* only reached on error */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1039 dropbear_exit("child failed");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1040 }
9
7f77962de998 - Reworked non-channel fd handling to listener.c
Matt Johnston <matt@ucc.asn.au>
parents: 7
diff changeset
1041
7
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1042 const struct ChanType svrchansess = {
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1043 0, /* sepfds */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1044 "session", /* name */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1045 newchansess, /* inithandler */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1046 sesscheckclose, /* checkclosehandler */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1047 chansessionrequest, /* reqhandler */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1048 closechansess, /* closehandler */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1049 };
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1050
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1051
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1052 /* Set up the general chansession environment, in particular child-exit
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1053 * handling */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1054 void svr_chansessinitialise() {
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1055
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1056 struct sigaction sa_chld;
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1057
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1058 /* single child process intially */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1059 svr_ses.childpids = (struct ChildPid*)m_malloc(sizeof(struct ChildPid));
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1060 svr_ses.childpids[0].pid = -1; /* unused */
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1061 svr_ses.childpids[0].chansess = NULL;
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1062 svr_ses.childpidsize = 1;
133
b4cfe976c8e1 Initialise the "lastexit" variable so that we don't get session channels
Matt Johnston <matt@ucc.asn.au>
parents: 130
diff changeset
1063 svr_ses.lastexit.exitpid = -1; /* Nothing has exited yet */
7
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1064 sa_chld.sa_handler = sesssigchild_handler;
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1065 sa_chld.sa_flags = SA_NOCLDSTOP;
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1066 if (sigaction(SIGCHLD, &sa_chld, NULL) < 0) {
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1067 dropbear_exit("signal() error");
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1068 }
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1069
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1070 }
425ed5c20157 Chantype handling is sorted
Matt Johnston <matt@ucc.asn.au>
parents: 6
diff changeset
1071
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1072 /* add a new environment variable, allocating space for the entry */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1073 void addnewvar(const char* param, const char* var) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1074
70
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
1075 char* newvar = NULL;
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1076 int plen, vlen;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1077
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1078 plen = strlen(param);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1079 vlen = strlen(var);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1080
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1081 newvar = m_malloc(plen + vlen + 2); /* 2 is for '=' and '\0' */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1082 memcpy(newvar, param, plen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1083 newvar[plen] = '=';
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1084 memcpy(&newvar[plen+1], var, vlen);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1085 newvar[plen+vlen+1] = '\0';
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1086 if (putenv(newvar) < 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1087 dropbear_exit("environ error");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1088 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
1089 }