Mercurial > dropbear
annotate cli-session.c @ 1908:eadd023fde4d
Support RSA OpenSSH new format in dropbearconvert
Added support for reading and writing. PEM writing support
has been removed.
OpenSSH file format routines have been moved to signkey_ossh.c
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 29 Mar 2022 22:27:55 +0800 |
parents | 62e4baa059c3 |
children |
rev | line source |
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74
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1 /* |
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2 * Dropbear SSH |
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3 * |
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4 * Copyright (c) 2002,2003 Matt Johnston |
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5 * Copyright (c) 2004 by Mihnea Stoenescu |
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6 * All rights reserved. |
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7 * |
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8 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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9 * of this software and associated documentation files (the "Software"), to deal |
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10 * in the Software without restriction, including without limitation the rights |
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11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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12 * copies of the Software, and to permit persons to whom the Software is |
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13 * furnished to do so, subject to the following conditions: |
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14 * |
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15 * The above copyright notice and this permission notice shall be included in |
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16 * all copies or substantial portions of the Software. |
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17 * |
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18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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24 * SOFTWARE. */ |
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25 |
26 | 26 #include "includes.h" |
27 #include "session.h" | |
28 #include "dbutil.h" | |
29 #include "kex.h" | |
30 #include "ssh.h" | |
31 #include "packet.h" | |
64 | 32 #include "tcpfwd.h" |
26 | 33 #include "channel.h" |
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34 #include "dbrandom.h" |
33 | 35 #include "service.h" |
40
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36 #include "runopts.h" |
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37 #include "chansession.h" |
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38 #include "agentfwd.h" |
766 | 39 #include "crypto_desc.h" |
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40 #include "netio.h" |
26 | 41 |
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42 static void cli_remoteclosed(void) ATTRIB_NORETURN; |
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43 static void cli_sessionloop(void); |
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44 static void cli_session_init(pid_t proxy_cmd_pid); |
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45 static void cli_finished(void) ATTRIB_NORETURN; |
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46 static void recv_msg_service_accept(void); |
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47 static void cli_session_cleanup(void); |
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48 static void recv_msg_global_request_cli(void); |
26 | 49 |
50 struct clientsession cli_ses; /* GLOBAL */ | |
51 | |
45
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52 /* Sorted in decreasing frequency will be more efficient - data and window |
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53 * should be first */ |
26 | 54 static const packettype cli_packettypes[] = { |
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55 /* TYPE, FUNCTION */ |
26 | 56 {SSH_MSG_CHANNEL_DATA, recv_msg_channel_data}, |
107 | 57 {SSH_MSG_CHANNEL_EXTENDED_DATA, recv_msg_channel_extended_data}, |
26 | 58 {SSH_MSG_CHANNEL_WINDOW_ADJUST, recv_msg_channel_window_adjust}, |
45
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59 {SSH_MSG_USERAUTH_FAILURE, recv_msg_userauth_failure}, /* client */ |
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60 {SSH_MSG_USERAUTH_SUCCESS, recv_msg_userauth_success}, /* client */ |
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61 {SSH_MSG_KEXINIT, recv_msg_kexinit}, |
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62 {SSH_MSG_KEXDH_REPLY, recv_msg_kexdh_reply}, /* client */ |
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63 {SSH_MSG_NEWKEYS, recv_msg_newkeys}, |
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64 {SSH_MSG_SERVICE_ACCEPT, recv_msg_service_accept}, /* client */ |
26 | 65 {SSH_MSG_CHANNEL_REQUEST, recv_msg_channel_request}, |
66 {SSH_MSG_CHANNEL_OPEN, recv_msg_channel_open}, | |
67 {SSH_MSG_CHANNEL_EOF, recv_msg_channel_eof}, | |
68 {SSH_MSG_CHANNEL_CLOSE, recv_msg_channel_close}, | |
69 {SSH_MSG_CHANNEL_OPEN_CONFIRMATION, recv_msg_channel_open_confirmation}, | |
70 {SSH_MSG_CHANNEL_OPEN_FAILURE, recv_msg_channel_open_failure}, | |
45
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71 {SSH_MSG_USERAUTH_BANNER, recv_msg_userauth_banner}, /* client */ |
249
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72 {SSH_MSG_USERAUTH_SPECIFIC_60, recv_msg_userauth_specific_60}, /* client */ |
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73 {SSH_MSG_GLOBAL_REQUEST, recv_msg_global_request_cli}, |
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74 {SSH_MSG_CHANNEL_SUCCESS, ignore_recv_response}, |
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75 {SSH_MSG_CHANNEL_FAILURE, ignore_recv_response}, |
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76 #if DROPBEAR_CLI_REMOTETCPFWD |
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77 {SSH_MSG_REQUEST_SUCCESS, cli_recv_msg_request_success}, /* client */ |
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78 {SSH_MSG_REQUEST_FAILURE, cli_recv_msg_request_failure}, /* client */ |
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79 #else |
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80 /* For keepalive */ |
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81 {SSH_MSG_REQUEST_SUCCESS, ignore_recv_response}, |
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82 {SSH_MSG_REQUEST_FAILURE, ignore_recv_response}, |
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83 #endif |
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84 {SSH_MSG_EXT_INFO, recv_msg_ext_info}, |
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85 {0, NULL} /* End */ |
26 | 86 }; |
87 | |
88 static const struct ChanType *cli_chantypes[] = { | |
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89 #if DROPBEAR_CLI_REMOTETCPFWD |
64 | 90 &cli_chan_tcpremote, |
91 #endif | |
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92 #if DROPBEAR_CLI_AGENTFWD |
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93 &cli_chan_agent, |
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94 #endif |
26 | 95 NULL /* Null termination */ |
96 }; | |
33 | 97 |
1025 | 98 void cli_connected(int result, int sock, void* userdata, const char *errstring) |
99 { | |
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100 struct sshsession *myses = userdata; |
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101 if (result == DROPBEAR_FAILURE) { |
1025 | 102 dropbear_exit("Connect failed: %s", errstring); |
103 } | |
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104 myses->sock_in = myses->sock_out = sock; |
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105 DEBUG1(("cli_connected")) |
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106 ses.socket_prio = DROPBEAR_PRIO_NORMAL; |
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107 /* switches to lowdelay */ |
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108 update_channel_prio(); |
1025 | 109 } |
110 | |
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111 void cli_session(int sock_in, int sock_out, struct dropbear_progress_connection *progress, pid_t proxy_cmd_pid) { |
26 | 112 |
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113 common_session_init(sock_in, sock_out); |
26 | 114 |
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115 if (progress) { |
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116 connect_set_writequeue(progress, &ses.writequeue); |
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117 } |
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118 |
26 | 119 chaninitialise(cli_chantypes); |
120 | |
33 | 121 /* Set up cli_ses vars */ |
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122 cli_session_init(proxy_cmd_pid); |
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123 |
26 | 124 /* Ready to go */ |
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125 ses.init_done = 1; |
26 | 126 |
127 /* Exchange identification */ | |
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128 send_session_identification(); |
26 | 129 |
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130 kexfirstinitialise(); /* initialise the kex state */ |
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131 |
26 | 132 send_msg_kexinit(); |
133 | |
134 session_loop(cli_sessionloop); | |
135 | |
136 /* Not reached */ | |
137 | |
33 | 138 } |
26 | 139 |
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140 #if DROPBEAR_KEX_FIRST_FOLLOWS |
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141 static void cli_send_kex_first_guess() { |
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142 send_msg_kexdh_init(); |
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143 } |
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144 #endif |
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145 |
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146 static void cli_session_init(pid_t proxy_cmd_pid) { |
33 | 147 |
148 cli_ses.state = STATE_NOTHING; | |
149 cli_ses.kex_state = KEX_NOTHING; | |
150 | |
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151 cli_ses.tty_raw_mode = 0; |
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152 cli_ses.winchange = 0; |
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153 |
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154 /* We store std{in,out,err}'s flags, so we can set them back on exit |
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155 * (otherwise busybox's ash isn't happy */ |
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156 cli_ses.stdincopy = dup(STDIN_FILENO); |
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157 cli_ses.stdinflags = fcntl(STDIN_FILENO, F_GETFL, 0); |
175
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* Reset the non-blocking status of stdout and stderr as well on exit
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158 cli_ses.stdoutcopy = dup(STDOUT_FILENO); |
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* Reset the non-blocking status of stdout and stderr as well on exit
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159 cli_ses.stdoutflags = fcntl(STDOUT_FILENO, F_GETFL, 0); |
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* Reset the non-blocking status of stdout and stderr as well on exit
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160 cli_ses.stderrcopy = dup(STDERR_FILENO); |
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* Reset the non-blocking status of stdout and stderr as well on exit
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161 cli_ses.stderrflags = fcntl(STDERR_FILENO, F_GETFL, 0); |
99
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162 |
108
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163 cli_ses.retval = EXIT_SUCCESS; /* Assume it's clean if we don't get a |
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164 specific exit status */ |
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165 cli_ses.proxy_cmd_pid = proxy_cmd_pid; |
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166 TRACE(("proxy command PID='%d'", proxy_cmd_pid)); |
108
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167 |
47 | 168 /* Auth */ |
215
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rename PubkeyList to SignKeyList for clarity
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diff
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169 cli_ses.lastprivkey = NULL; |
136
fb7147e2fb04
- Fixed a couple of compile warnings
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|
170 cli_ses.lastauthtype = 0; |
1821
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171 cli_ses.is_trivial_auth = 1; |
47 | 172 |
33 | 173 /* For printing "remote host closed" for the user */ |
174 ses.remoteclosed = cli_remoteclosed; | |
175 | |
733
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176 ses.extra_session_cleanup = cli_session_cleanup; |
33 | 177 |
178 /* packet handlers */ | |
179 ses.packettypes = cli_packettypes; | |
35
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180 |
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181 ses.isserver = 0; |
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182 |
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183 #if DROPBEAR_KEX_FIRST_FOLLOWS |
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184 ses.send_kex_first_guess = cli_send_kex_first_guess; |
746
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185 #endif |
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186 |
26 | 187 } |
188 | |
1538
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more linting (#58)
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|
189 static void send_msg_service_request(const char* servicename) { |
727
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190 |
00bc3df3a9c3
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191 TRACE(("enter send_msg_service_request: servicename='%s'", servicename)) |
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192 |
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193 CHECKCLEARTOWRITE(); |
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194 |
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195 buf_putbyte(ses.writepayload, SSH_MSG_SERVICE_REQUEST); |
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196 buf_putstring(ses.writepayload, servicename, strlen(servicename)); |
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197 |
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198 encrypt_packet(); |
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199 TRACE(("leave send_msg_service_request")) |
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200 } |
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201 |
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|
202 static void recv_msg_service_accept(void) { |
857 | 203 /* do nothing, if it failed then the server MUST have disconnected */ |
727
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204 } |
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205 |
33 | 206 /* This function drives the progress of the session - it initiates KEX, |
207 * service, userauth and channel requests */ | |
26 | 208 static void cli_sessionloop() { |
209 | |
731
9a5438271556
Move the more verbose TRACE() statements into TRACE2()
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210 TRACE2(("enter cli_sessionloop")) |
33 | 211 |
745
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Don't usually need to recalculate dh_e for the repeated kexdh_init packet
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|
212 if (ses.lastpacket == 0) { |
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Don't usually need to recalculate dh_e for the repeated kexdh_init packet
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|
213 TRACE2(("exit cli_sessionloop: no real packets yet")) |
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214 return; |
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215 } |
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216 |
34
e2a1eaa19f22
Client mostly works up to password auth
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diff
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|
217 if (ses.lastpacket == SSH_MSG_KEXINIT && cli_ses.kex_state == KEX_NOTHING) { |
33 | 218 /* We initiate the KEXDH. If DH wasn't the correct type, the KEXINIT |
219 * negotiation would have failed. */ | |
739
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220 if (!ses.kexstate.our_first_follows_matches) { |
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first_kex_packet_follows working, needs tidying
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|
221 send_msg_kexdh_init(); |
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|
222 } |
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diff
changeset
|
223 cli_ses.kex_state = KEXDH_INIT_SENT; |
165
0cfba3034be5
Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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136
diff
changeset
|
224 TRACE(("leave cli_sessionloop: done with KEXINIT_RCVD")) |
33 | 225 return; |
226 } | |
227 | |
228 /* A KEX has finished, so we should go back to our KEX_NOTHING state */ | |
753
d63ef1e211ea
Take transmit and receive keys into use separately
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diff
changeset
|
229 if (cli_ses.kex_state != KEX_NOTHING && ses.kexstate.sentnewkeys) { |
33 | 230 cli_ses.kex_state = KEX_NOTHING; |
231 } | |
232 | |
233 /* We shouldn't do anything else if a KEX is in progress */ | |
234 if (cli_ses.kex_state != KEX_NOTHING) { | |
165
0cfba3034be5
Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff
changeset
|
235 TRACE(("leave cli_sessionloop: kex_state != KEX_NOTHING")) |
33 | 236 return; |
237 } | |
238 | |
239 if (ses.kexstate.donefirstkex == 0) { | |
745
15999b098cc9
Don't usually need to recalculate dh_e for the repeated kexdh_init packet
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|
240 /* We might reach here if we have partial packet reads or have |
15999b098cc9
Don't usually need to recalculate dh_e for the repeated kexdh_init packet
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diff
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|
241 * received SSG_MSG_IGNORE etc. Just skip it */ |
753
d63ef1e211ea
Take transmit and receive keys into use separately
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diff
changeset
|
242 TRACE2(("donefirstkex false\n")) |
34
e2a1eaa19f22
Client mostly works up to password auth
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diff
changeset
|
243 return; |
33 | 244 } |
245 | |
26 | 246 switch (cli_ses.state) { |
247 | |
33 | 248 case STATE_NOTHING: |
249 /* We've got the transport layer sorted, we now need to request | |
250 * userauth */ | |
251 send_msg_service_request(SSH_SERVICE_USERAUTH); | |
1825
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Add a comment about sending initial auth request
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252 /* We aren't using any "implicit server authentication" methods, |
7a0068effc65
Add a comment about sending initial auth request
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|
253 so don't need to wait for a response for SSH_SERVICE_USERAUTH |
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diff
changeset
|
254 before sending the auth messages (rfc4253 10) */ |
33 | 255 cli_auth_getmethods(); |
45
9ee8996a375f
Pubkey auth is mostly there for the client. Something strange with
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43
diff
changeset
|
256 cli_ses.state = USERAUTH_REQ_SENT; |
165
0cfba3034be5
Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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diff
changeset
|
257 TRACE(("leave cli_sessionloop: sent userauth methods req")) |
33 | 258 return; |
883
ff597bf2cfb0
DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default
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diff
changeset
|
259 |
ff597bf2cfb0
DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default
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diff
changeset
|
260 case USERAUTH_REQ_SENT: |
ff597bf2cfb0
DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default
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diff
changeset
|
261 TRACE(("leave cli_sessionloop: waiting, req_sent")) |
ff597bf2cfb0
DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default
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diff
changeset
|
262 return; |
33 | 263 |
264 case USERAUTH_FAIL_RCVD: | |
734
619b1ed837fd
Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE
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733
diff
changeset
|
265 if (cli_auth_try() == DROPBEAR_FAILURE) { |
619b1ed837fd
Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE
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diff
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|
266 dropbear_exit("No auth methods could be used."); |
619b1ed837fd
Be a bit more careful about when we want to use CLI_AUTH_IMMEDIATE
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|
267 } |
45
9ee8996a375f
Pubkey auth is mostly there for the client. Something strange with
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diff
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268 cli_ses.state = USERAUTH_REQ_SENT; |
165
0cfba3034be5
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269 TRACE(("leave cli_sessionloop: cli_auth_try")) |
33 | 270 return; |
271 | |
37 | 272 case USERAUTH_SUCCESS_RCVD: |
1212
bf626d259eb1
Support syslog logging in dbclient.
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diff
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|
273 #ifndef DISABLE_SYSLOG |
bf626d259eb1
Support syslog logging in dbclient.
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274 if (opts.usingsyslog) { |
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Support syslog logging in dbclient.
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275 dropbear_log(LOG_INFO, "Authentication succeeded."); |
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276 } |
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|
277 #endif |
326
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278 |
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279 if (cli_opts.backgrounded) { |
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|
280 int devnull; |
433
c216212001fc
Fix for -pedantic -ansi compilation, change // to /**/, plus some signedness
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diff
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281 /* keeping stdin open steals input from the terminal and |
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282 is confusing, though stdout/stderr could be useful. */ |
1387
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Use DROPBEAR_PATH_DEVNULL instead of undefined _PATH_DEVNULL
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changeset
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283 devnull = open(DROPBEAR_PATH_DEVNULL, O_RDONLY); |
326
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284 if (devnull < 0) { |
594
a98a2138364a
Improve capitalisation for all logged strings
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568
diff
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285 dropbear_exit("Opening /dev/null: %d %s", |
326
d965110e3f5c
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286 errno, strerror(errno)); |
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287 } |
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288 dup2(devnull, STDIN_FILENO); |
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289 if (daemon(0, 1) < 0) { |
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290 dropbear_exit("Backgrounding failed: %d %s", |
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291 errno, strerror(errno)); |
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292 } |
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293 } |
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294 |
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295 #if DROPBEAR_CLI_NETCAT |
485
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Rework netcat-alike to be a proper mode, with -B argument.
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296 if (cli_opts.netcat_host) { |
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diff
changeset
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297 cli_send_netcat_request(); |
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298 } else |
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299 #endif |
560 | 300 if (!cli_opts.no_cmd) { |
325
0e4f225b7e07
Add -N "no remote command" dbclient option.
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diff
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301 cli_send_chansess_request(); |
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Add -N "no remote command" dbclient option.
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302 } |
754
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303 |
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304 #if DROPBEAR_CLI_LOCALTCPFWD |
754
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305 setup_localtcp(); |
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306 #endif |
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307 #if DROPBEAR_CLI_REMOTETCPFWD |
754
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308 setup_remotetcp(); |
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309 #endif |
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310 |
325
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311 TRACE(("leave cli_sessionloop: running")) |
37 | 312 cli_ses.state = SESSION_RUNNING; |
313 return; | |
314 | |
40
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315 case SESSION_RUNNING: |
325
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316 if (ses.chancount < 1 && !cli_opts.no_cmd) { |
40
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317 cli_finished(); |
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318 } |
41
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319 |
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320 if (cli_ses.winchange) { |
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321 cli_chansess_winchange(); |
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322 } |
40
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323 return; |
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324 |
33 | 325 /* XXX more here needed */ |
326 | |
327 | |
328 default: | |
329 break; | |
26 | 330 } |
331 | |
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332 TRACE2(("leave cli_sessionloop: fell out")) |
26 | 333 |
334 } | |
335 | |
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336 void kill_proxy_command(void) { |
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337 /* |
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338 * Send SIGHUP to proxy command if used. We don't wait() in |
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339 * case it hangs and instead rely on init to reap the child |
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340 */ |
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341 if (cli_ses.proxy_cmd_pid > 1) { |
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342 TRACE(("killing proxy command with PID='%d'", cli_ses.proxy_cmd_pid)); |
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343 kill(cli_ses.proxy_cmd_pid, SIGHUP); |
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344 } |
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345 } |
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346 |
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347 static void cli_session_cleanup(void) { |
40
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348 |
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349 if (!ses.init_done) { |
40
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350 return; |
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351 } |
99
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352 |
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353 kill_proxy_command(); |
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354 |
175
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355 /* Set std{in,out,err} back to non-blocking - busybox ash dies nastily if |
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356 * we don't revert the flags */ |
1258
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357 /* Ignore return value since there's nothing we can do */ |
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358 (void)fcntl(cli_ses.stdincopy, F_SETFL, cli_ses.stdinflags); |
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359 (void)fcntl(cli_ses.stdoutcopy, F_SETFL, cli_ses.stdoutflags); |
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360 (void)fcntl(cli_ses.stderrcopy, F_SETFL, cli_ses.stderrflags); |
99
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361 |
1742
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362 /* Don't leak */ |
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363 m_close(cli_ses.stdincopy); |
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364 m_close(cli_ses.stdoutcopy); |
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365 m_close(cli_ses.stderrcopy); |
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366 |
40
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367 cli_tty_cleanup(); |
1676
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368 if (cli_ses.server_sig_algs) { |
d5cdc60db08e
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369 buf_free(cli_ses.server_sig_algs); |
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370 } |
40
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371 } |
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372 |
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373 static void cli_finished() { |
1686 | 374 TRACE(("cli_finished()")) |
40
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|
375 |
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376 session_cleanup(); |
40
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377 fprintf(stderr, "Connection to %s@%s:%s closed.\n", cli_opts.username, |
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378 cli_opts.remotehost, cli_opts.remoteport); |
108
10f4d3319780
- added circular buffering for channels
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diff
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|
379 exit(cli_ses.retval); |
40
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380 } |
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|
381 |
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|
382 |
26 | 383 /* called when the remote side closes the connection */ |
384 static void cli_remoteclosed() { | |
385 | |
386 /* XXX TODO perhaps print a friendlier message if we get this but have | |
387 * already sent/received disconnect message(s) ??? */ | |
479
e3db1f7a2e43
- Split main socket var into ses.sock_in/ses.sock_out in preparation
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433
diff
changeset
|
388 m_close(ses.sock_in); |
e3db1f7a2e43
- Split main socket var into ses.sock_in/ses.sock_out in preparation
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433
diff
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|
389 m_close(ses.sock_out); |
e3db1f7a2e43
- Split main socket var into ses.sock_in/ses.sock_out in preparation
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433
diff
changeset
|
390 ses.sock_in = -1; |
e3db1f7a2e43
- Split main socket var into ses.sock_in/ses.sock_out in preparation
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433
diff
changeset
|
391 ses.sock_out = -1; |
594
a98a2138364a
Improve capitalisation for all logged strings
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568
diff
changeset
|
392 dropbear_exit("Remote closed the connection"); |
26 | 393 } |
43 | 394 |
395 /* Operates in-place turning dirty (untrusted potentially containing control | |
249
efbaf6b03837
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215
diff
changeset
|
396 * characters) text into clean text. |
efbaf6b03837
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215
diff
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|
397 * Note: this is safe only with ascii - other charsets could have problems. */ |
1101
94ff5316980f
Turn cleantext()'s dirtytext argument into char *
Gaël PORTAY <gael.portay@gmail.com>
parents:
1094
diff
changeset
|
398 void cleantext(char* dirtytext) { |
43 | 399 |
400 unsigned int i, j; | |
1101
94ff5316980f
Turn cleantext()'s dirtytext argument into char *
Gaël PORTAY <gael.portay@gmail.com>
parents:
1094
diff
changeset
|
401 char c; |
43 | 402 |
403 j = 0; | |
404 for (i = 0; dirtytext[i] != '\0'; i++) { | |
405 | |
406 c = dirtytext[i]; | |
407 /* We can ignore '\r's */ | |
408 if ( (c >= ' ' && c <= '~') || c == '\n' || c == '\t') { | |
409 dirtytext[j] = c; | |
410 j++; | |
411 } | |
412 } | |
413 /* Null terminate */ | |
414 dirtytext[j] = '\0'; | |
415 } | |
937
4ad38e223ccd
Send a failure response if a client receives a global request
Matt Johnston <matt@ucc.asn.au>
parents:
883
diff
changeset
|
416 |
4ad38e223ccd
Send a failure response if a client receives a global request
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883
diff
changeset
|
417 static void recv_msg_global_request_cli(void) { |
1788
1fc0012b9c38
Fix handling of replies to global requests (#112)
Dirkjan Bussink <d.bussink@gmail.com>
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1742
diff
changeset
|
418 unsigned int wantreply = 0; |
1fc0012b9c38
Fix handling of replies to global requests (#112)
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diff
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|
419 |
1789 | 420 buf_eatstring(ses.payload); |
1788
1fc0012b9c38
Fix handling of replies to global requests (#112)
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diff
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|
421 wantreply = buf_getbool(ses.payload); |
1fc0012b9c38
Fix handling of replies to global requests (#112)
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1742
diff
changeset
|
422 |
1fc0012b9c38
Fix handling of replies to global requests (#112)
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1742
diff
changeset
|
423 TRACE(("recv_msg_global_request_cli: want_reply: %u", wantreply)); |
1fc0012b9c38
Fix handling of replies to global requests (#112)
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1742
diff
changeset
|
424 |
1fc0012b9c38
Fix handling of replies to global requests (#112)
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parents:
1742
diff
changeset
|
425 if (wantreply) { |
1fc0012b9c38
Fix handling of replies to global requests (#112)
Dirkjan Bussink <d.bussink@gmail.com>
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diff
changeset
|
426 /* Send a proper rejection */ |
1fc0012b9c38
Fix handling of replies to global requests (#112)
Dirkjan Bussink <d.bussink@gmail.com>
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diff
changeset
|
427 send_msg_request_failure(); |
1fc0012b9c38
Fix handling of replies to global requests (#112)
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diff
changeset
|
428 } |
937
4ad38e223ccd
Send a failure response if a client receives a global request
Matt Johnston <matt@ucc.asn.au>
parents:
883
diff
changeset
|
429 } |
1741
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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|
430 |
d1b279aa5ed1
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|
431 void cli_dropbear_exit(int exitcode, const char* format, va_list param) { |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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432 char exitmsg[150]; |
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Get client fuzzer building and starting (fails straight away)
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changeset
|
433 char fullmsg[300]; |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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|
434 |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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diff
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|
435 /* Note that exit message must be rendered before session cleanup */ |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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diff
changeset
|
436 |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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diff
changeset
|
437 /* Render the formatted exit message */ |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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changeset
|
438 vsnprintf(exitmsg, sizeof(exitmsg), format, param); |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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diff
changeset
|
439 TRACE(("Exited, cleaning up: %s", exitmsg)) |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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diff
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|
440 |
d1b279aa5ed1
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changeset
|
441 /* Add the prefix depending on session/auth state */ |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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diff
changeset
|
442 if (!ses.init_done) { |
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diff
changeset
|
443 snprintf(fullmsg, sizeof(fullmsg), "Exited: %s", exitmsg); |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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diff
changeset
|
444 } else { |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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changeset
|
445 snprintf(fullmsg, sizeof(fullmsg), |
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Get client fuzzer building and starting (fails straight away)
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diff
changeset
|
446 "Connection to %s@%s:%s exited: %s", |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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|
447 cli_opts.username, cli_opts.remotehost, |
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|
448 cli_opts.remoteport, exitmsg); |
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Get client fuzzer building and starting (fails straight away)
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|
449 } |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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|
450 |
d1b279aa5ed1
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|
451 /* Do the cleanup first, since then the terminal will be reset */ |
d1b279aa5ed1
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changeset
|
452 session_cleanup(); |
1742
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Add fuzzer-client_nomaths, fix client fuzzer
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diff
changeset
|
453 |
1741
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|
454 #if DROPBEAR_FUZZ |
d1b279aa5ed1
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|
455 if (fuzz.do_jmp) { |
d1b279aa5ed1
Get client fuzzer building and starting (fails straight away)
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diff
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456 longjmp(fuzz.jmp, 1); |
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457 } |
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458 #endif |
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459 |
1742
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460 /* Avoid printing onwards from terminal cruft */ |
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461 fprintf(stderr, "\n"); |
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462 |
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463 dropbear_log(LOG_INFO, "%s", fullmsg); |
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464 |
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465 exit(exitcode); |
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466 } |
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467 |
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468 void cli_dropbear_log(int priority, const char* format, va_list param) { |
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469 |
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470 char printbuf[1024]; |
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471 const char *name; |
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472 |
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473 name = cli_opts.progname; |
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474 if (!name) { |
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475 name = "dbclient"; |
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476 } |
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477 |
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478 vsnprintf(printbuf, sizeof(printbuf), format, param); |
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479 |
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480 #ifndef DISABLE_SYSLOG |
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481 if (opts.usingsyslog) { |
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482 syslog(priority, "%s", printbuf); |
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483 } |
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484 #endif |
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485 |
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486 fprintf(stderr, "%s: %s\n", name, printbuf); |
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487 fflush(stderr); |
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488 } |
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489 |