Mercurial > dropbear
annotate cli-runopts.c @ 971:763979a9c1f1 coverity
merge
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 19 Aug 2014 23:36:46 +0800 |
parents | a4032b946355 |
children | 6fb4c010c448 |
rev | line source |
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1 /* |
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2 * Dropbear - a SSH2 server |
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3 * |
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4 * Copyright (c) 2002,2003 Matt Johnston |
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5 * All rights reserved. |
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6 * |
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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8 * of this software and associated documentation files (the "Software"), to deal |
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9 * in the Software without restriction, including without limitation the rights |
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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11 * copies of the Software, and to permit persons to whom the Software is |
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12 * furnished to do so, subject to the following conditions: |
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13 * |
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14 * The above copyright notice and this permission notice shall be included in |
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15 * all copies or substantial portions of the Software. |
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16 * |
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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23 * SOFTWARE. */ |
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24 |
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25 #include "includes.h" |
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26 #include "runopts.h" |
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27 #include "signkey.h" |
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28 #include "buffer.h" |
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29 #include "dbutil.h" |
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30 #include "algo.h" |
64 | 31 #include "tcpfwd.h" |
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32 #include "list.h" |
39
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33 |
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34 cli_runopts cli_opts; /* GLOBAL */ |
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35 |
47 | 36 static void printhelp(); |
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37 static void parse_hostname(const char* orighostarg); |
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38 static void parse_multihop_hostname(const char* orighostarg, const char* argv0); |
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39 static void fill_own_user(); |
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40 #ifdef ENABLE_CLI_PUBKEY_AUTH |
47 | 41 static void loadidentityfile(const char* filename); |
42 #endif | |
64 | 43 #ifdef ENABLE_CLI_ANYTCPFWD |
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44 static void addforward(const char* str, m_list *fwdlist); |
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45 #endif |
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46 #ifdef ENABLE_CLI_NETCAT |
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47 static void add_netcat(const char *str); |
64 | 48 #endif |
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49 |
47 | 50 static void printhelp() { |
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51 |
716 | 52 fprintf(stderr, "Dropbear SSH client v%s https://matt.ucc.asn.au/dropbear/dropbear.html\n" |
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53 #ifdef ENABLE_CLI_MULTIHOP |
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54 "Usage: %s [options] [user@]host[/port][,[user@]host/port],...] [command]\n" |
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55 #else |
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56 "Usage: %s [options] [user@]host[/port] [command]\n" |
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57 #endif |
47 | 58 "-p <remoteport>\n" |
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59 "-l <username>\n" |
56
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60 "-t Allocate a pty\n" |
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61 "-T Don't allocate a pty\n" |
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62 "-N Don't run a remote command\n" |
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63 "-f Run in background after auth\n" |
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64 "-y Always accept remote host key if unknown\n" |
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65 "-y -y Don't perform any remote host key checking (caution)\n" |
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66 "-s Request a subsystem (use by external sftp)\n" |
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67 #ifdef ENABLE_CLI_PUBKEY_AUTH |
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68 "-i <identityfile> (multiple allowed)\n" |
47 | 69 #endif |
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70 #ifdef ENABLE_CLI_AGENTFWD |
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71 "-A Enable agent auth forwarding\n" |
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72 #endif |
64 | 73 #ifdef ENABLE_CLI_LOCALTCPFWD |
580 | 74 "-L <[listenaddress:]listenport:remotehost:remoteport> Local port forwarding\n" |
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75 "-g Allow remote hosts to connect to forwarded ports\n" |
62 | 76 #endif |
64 | 77 #ifdef ENABLE_CLI_REMOTETCPFWD |
580 | 78 "-R <[listenaddress:]listenport:remotehost:remoteport> Remote port forwarding\n" |
62 | 79 #endif |
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80 "-W <receive_window_buffer> (default %d, larger may be faster, max 1MB)\n" |
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81 "-K <keepalive> (0 is never, default %d)\n" |
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82 "-I <idle_timeout> (0 is never, default %d)\n" |
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83 #ifdef ENABLE_CLI_NETCAT |
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84 "-B <endhost:endport> Netcat-alike forwarding\n" |
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85 #endif |
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86 #ifdef ENABLE_CLI_PROXYCMD |
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87 "-J <proxy_program> Use program pipe rather than TCP connection\n" |
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88 #endif |
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89 #ifdef ENABLE_USER_ALGO_LIST |
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90 "-c <cipher list> Specify preferred ciphers ('-c help' to list options)\n" |
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91 "-m <MAC list> Specify preferred MACs for packet verification (or '-m help')\n" |
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92 #endif |
946 | 93 "-V Version\n" |
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94 #ifdef DEBUG_TRACE |
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95 "-v verbose (compiled with DEBUG_TRACE)\n" |
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96 #endif |
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97 ,DROPBEAR_VERSION, cli_opts.progname, |
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98 DEFAULT_RECV_WINDOW, DEFAULT_KEEPALIVE, DEFAULT_IDLE_TIMEOUT); |
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99 |
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100 } |
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101 |
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102 void cli_getopts(int argc, char ** argv) { |
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103 unsigned int i, j; |
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104 char ** next = 0; |
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105 unsigned int cmdlen; |
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106 #ifdef ENABLE_CLI_PUBKEY_AUTH |
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107 int nextiskey = 0; /* A flag if the next argument is a keyfile */ |
47 | 108 #endif |
64 | 109 #ifdef ENABLE_CLI_LOCALTCPFWD |
62 | 110 int nextislocal = 0; |
111 #endif | |
64 | 112 #ifdef ENABLE_CLI_REMOTETCPFWD |
62 | 113 int nextisremote = 0; |
114 #endif | |
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115 #ifdef ENABLE_CLI_NETCAT |
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116 int nextisnetcat = 0; |
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117 #endif |
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118 char* dummy = NULL; /* Not used for anything real */ |
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119 |
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120 char* recv_window_arg = NULL; |
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121 char* keepalive_arg = NULL; |
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122 char* idle_timeout_arg = NULL; |
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123 char *host_arg = NULL; |
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124 |
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125 /* see printhelp() for options */ |
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126 cli_opts.progname = argv[0]; |
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127 cli_opts.remotehost = NULL; |
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128 cli_opts.remoteport = NULL; |
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129 cli_opts.username = NULL; |
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130 cli_opts.cmd = NULL; |
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131 cli_opts.no_cmd = 0; |
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132 cli_opts.backgrounded = 0; |
47 | 133 cli_opts.wantpty = 9; /* 9 means "it hasn't been touched", gets set later */ |
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134 cli_opts.always_accept_key = 0; |
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135 cli_opts.no_hostkey_check = 0; |
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136 cli_opts.is_subsystem = 0; |
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137 #ifdef ENABLE_CLI_PUBKEY_AUTH |
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138 cli_opts.privkeys = list_new(); |
47 | 139 #endif |
64 | 140 #ifdef ENABLE_CLI_LOCALTCPFWD |
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141 cli_opts.localfwds = list_new(); |
446
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142 opts.listen_fwd_all = 0; |
62 | 143 #endif |
64 | 144 #ifdef ENABLE_CLI_REMOTETCPFWD |
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145 cli_opts.remotefwds = list_new(); |
62 | 146 #endif |
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147 #ifdef ENABLE_CLI_AGENTFWD |
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148 cli_opts.agent_fwd = 0; |
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149 cli_opts.agent_fd = -1; |
225
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150 cli_opts.agent_keys_loaded = 0; |
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151 #endif |
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152 #ifdef ENABLE_CLI_PROXYCMD |
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153 cli_opts.proxycmd = NULL; |
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154 #endif |
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155 #ifndef DISABLE_ZLIB |
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156 opts.enable_compress = 1; |
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157 #endif |
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158 #ifdef ENABLE_USER_ALGO_LIST |
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159 opts.cipher_list = NULL; |
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160 opts.mac_list = NULL; |
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161 #endif |
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162 /* not yet |
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163 opts.ipv4 = 1; |
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164 opts.ipv6 = 1; |
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165 */ |
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166 opts.recv_window = DEFAULT_RECV_WINDOW; |
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167 opts.keepalive_secs = DEFAULT_KEEPALIVE; |
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168 opts.idle_timeout_secs = DEFAULT_IDLE_TIMEOUT; |
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169 |
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170 fill_own_user(); |
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171 |
47 | 172 /* Iterate all the arguments */ |
46
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173 for (i = 1; i < (unsigned int)argc; i++) { |
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174 #ifdef ENABLE_CLI_PUBKEY_AUTH |
46
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175 if (nextiskey) { |
47 | 176 /* Load a hostkey since the previous argument was "-i" */ |
177 loadidentityfile(argv[i]); | |
178 nextiskey = 0; | |
179 continue; | |
39
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180 } |
47 | 181 #endif |
64 | 182 #ifdef ENABLE_CLI_REMOTETCPFWD |
183 if (nextisremote) { | |
165
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184 TRACE(("nextisremote true")) |
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185 addforward(argv[i], cli_opts.remotefwds); |
64 | 186 nextisremote = 0; |
187 continue; | |
188 } | |
189 #endif | |
190 #ifdef ENABLE_CLI_LOCALTCPFWD | |
191 if (nextislocal) { | |
165
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192 TRACE(("nextislocal true")) |
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193 addforward(argv[i], cli_opts.localfwds); |
64 | 194 nextislocal = 0; |
195 continue; | |
196 } | |
197 #endif | |
485
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198 #ifdef ENABLE_CLI_NETCAT |
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199 if (nextisnetcat) { |
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200 TRACE(("nextisnetcat true")) |
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201 add_netcat(argv[i]); |
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202 nextisnetcat = 0; |
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203 continue; |
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204 } |
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205 #endif |
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206 if (next) { |
47 | 207 /* The previous flag set a value to assign */ |
39
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208 *next = argv[i]; |
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209 if (*next == NULL) { |
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210 dropbear_exit("Invalid null argument"); |
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211 } |
46
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212 next = NULL; |
39
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213 continue; |
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214 } |
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215 |
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216 if (argv[i][0] == '-') { |
47 | 217 /* A flag *waves* */ |
46
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218 |
39
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219 switch (argv[i][1]) { |
418
ab57ba0cb667
Add '-y' option to dbclient to accept the host key without checking
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220 case 'y': /* always accept the remote hostkey */ |
772
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|
221 if (cli_opts.always_accept_key) { |
857 | 222 /* twice means no checking at all */ |
772
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223 cli_opts.no_hostkey_check = 1; |
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224 } |
418
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|
225 cli_opts.always_accept_key = 1; |
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226 break; |
47 | 227 case 'p': /* remoteport */ |
46
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228 next = &cli_opts.remoteport; |
39
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229 break; |
68
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|
230 #ifdef ENABLE_CLI_PUBKEY_AUTH |
47 | 231 case 'i': /* an identityfile */ |
134 | 232 /* Keep scp happy when it changes "-i file" to "-ifile" */ |
233 if (strlen(argv[i]) > 2) { | |
234 loadidentityfile(&argv[i][2]); | |
235 } else { | |
236 nextiskey = 1; | |
237 } | |
39
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238 break; |
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|
239 #endif |
47 | 240 case 't': /* we want a pty */ |
241 cli_opts.wantpty = 1; | |
242 break; | |
243 case 'T': /* don't want a pty */ | |
244 cli_opts.wantpty = 0; | |
245 break; | |
325
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Add -N "no remote command" dbclient option.
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246 case 'N': |
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247 cli_opts.no_cmd = 1; |
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diff
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|
248 break; |
326
d965110e3f5c
add -f background option to dbclient
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325
diff
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|
249 case 'f': |
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diff
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|
250 cli_opts.backgrounded = 1; |
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diff
changeset
|
251 break; |
497
ae600f1eef81
- Enable -s for specifying a subsystem (such as sftp)
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diff
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|
252 case 's': |
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253 cli_opts.is_subsystem = 1; |
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254 break; |
64 | 255 #ifdef ENABLE_CLI_LOCALTCPFWD |
256 case 'L': | |
257 nextislocal = 1; | |
258 break; | |
258
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* add -g (dbclient) and -a (dropbear) options for allowing non-local
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259 case 'g': |
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260 opts.listen_fwd_all = 1; |
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261 break; |
64 | 262 #endif |
263 #ifdef ENABLE_CLI_REMOTETCPFWD | |
264 case 'R': | |
265 nextisremote = 1; | |
266 break; | |
267 #endif | |
485
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|
268 #ifdef ENABLE_CLI_NETCAT |
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269 case 'B': |
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|
270 nextisnetcat = 1; |
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271 break; |
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|
272 #endif |
479
e3db1f7a2e43
- Split main socket var into ses.sock_in/ses.sock_out in preparation
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|
273 #ifdef ENABLE_CLI_PROXYCMD |
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- Split main socket var into ses.sock_in/ses.sock_out in preparation
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274 case 'J': |
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|
275 next = &cli_opts.proxycmd; |
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|
276 break; |
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- Split main socket var into ses.sock_in/ses.sock_out in preparation
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|
277 #endif |
66
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|
278 case 'l': |
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diff
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|
279 next = &cli_opts.username; |
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diff
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|
280 break; |
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|
281 case 'h': |
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diff
changeset
|
282 printhelp(); |
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diff
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|
283 exit(EXIT_SUCCESS); |
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diff
changeset
|
284 break; |
442
d82a2a44c684
Add -u option to specify /dev/urandom instead
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418
diff
changeset
|
285 case 'u': |
446
2cd2edfa11ee
Just use /dev/urandom since that's what everyone ends up using anyway.
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diff
changeset
|
286 /* backwards compatibility with old urandom option */ |
442
d82a2a44c684
Add -u option to specify /dev/urandom instead
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418
diff
changeset
|
287 break; |
449
3e6c536bc023
Add -W <windowsize> argument and document it.
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diff
changeset
|
288 case 'W': |
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|
289 next = &recv_window_arg; |
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changeset
|
290 break; |
454
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
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449
diff
changeset
|
291 case 'K': |
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diff
changeset
|
292 next = &keepalive_arg; |
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diff
changeset
|
293 break; |
513
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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509
diff
changeset
|
294 case 'I': |
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Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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509
diff
changeset
|
295 next = &idle_timeout_arg; |
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509
diff
changeset
|
296 break; |
225
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changeset
|
297 #ifdef ENABLE_CLI_AGENTFWD |
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298 case 'A': |
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299 cli_opts.agent_fwd = 1; |
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300 break; |
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301 #endif |
682
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302 #ifdef ENABLE_USER_ALGO_LIST |
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303 case 'c': |
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304 next = &opts.cipher_list; |
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305 break; |
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306 case 'm': |
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307 next = &opts.mac_list; |
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308 break; |
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309 #endif |
94
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310 #ifdef DEBUG_TRACE |
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311 case 'v': |
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312 debug_trace = 1; |
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313 break; |
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314 #endif |
66
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315 case 'F': |
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316 case 'e': |
682
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317 #ifndef ENABLE_USER_ALGO_LIST |
66
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318 case 'c': |
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319 case 'm': |
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320 #endif |
66
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321 case 'D': |
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322 #ifndef ENABLE_CLI_REMOTETCPFWD |
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323 case 'R': |
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324 #endif |
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325 #ifndef ENABLE_CLI_LOCALTCPFWD |
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326 case 'L': |
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327 #endif |
946 | 328 case 'V': |
329 print_version(); | |
330 exit(EXIT_SUCCESS); | |
331 break; | |
66
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332 case 'o': |
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333 case 'b': |
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334 next = &dummy; |
39
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335 default: |
66
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336 fprintf(stderr, |
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337 "WARNING: Ignoring unknown argument '%s'\n", argv[i]); |
39
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338 break; |
46
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339 } /* Switch */ |
105 | 340 |
341 /* Now we handle args where they might be "-luser" (no spaces)*/ | |
342 if (next && strlen(argv[i]) > 2) { | |
343 *next = &argv[i][2]; | |
344 next = NULL; | |
345 } | |
46
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346 |
47 | 347 continue; /* next argument */ |
348 | |
46
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349 } else { |
165
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350 TRACE(("non-flag arg: '%s'", argv[i])) |
46
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351 |
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352 /* Either the hostname or commands */ |
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353 |
544
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354 if (host_arg == NULL) { |
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355 host_arg = argv[i]; |
47 | 356 } else { |
46
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357 |
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358 /* this is part of the commands to send - after this we |
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359 * don't parse any more options, and flags are sent as the |
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360 * command */ |
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|
361 cmdlen = 0; |
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362 for (j = i; j < (unsigned int)argc; j++) { |
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363 cmdlen += strlen(argv[j]) + 1; /* +1 for spaces */ |
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364 } |
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365 /* Allocate the space */ |
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366 cli_opts.cmd = (char*)m_malloc(cmdlen); |
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|
367 cli_opts.cmd[0] = '\0'; |
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368 |
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369 /* Append all the bits */ |
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370 for (j = i; j < (unsigned int)argc; j++) { |
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371 strlcat(cli_opts.cmd, argv[j], cmdlen); |
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372 strlcat(cli_opts.cmd, " ", cmdlen); |
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373 } |
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|
374 /* It'll be null-terminated here */ |
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|
375 |
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376 /* We've eaten all the options and flags */ |
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|
377 break; |
39
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|
378 } |
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|
379 } |
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|
380 } |
47 | 381 |
487
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382 /* And now a few sanity checks and setup */ |
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383 |
682
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384 #ifdef ENABLE_USER_ALGO_LIST |
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385 parse_ciphers_macs(); |
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386 #endif |
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387 |
544
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|
388 if (host_arg == NULL) { |
66
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389 printhelp(); |
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390 exit(EXIT_FAILURE); |
47 | 391 } |
392 | |
812
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393 #ifdef ENABLE_CLI_PROXYCMD |
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394 if (cli_opts.proxycmd) { |
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395 /* To match the common path of m_freeing it */ |
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396 cli_opts.proxycmd = m_strdup(cli_opts.proxycmd); |
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397 } |
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398 #endif |
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|
399 |
47 | 400 if (cli_opts.remoteport == NULL) { |
401 cli_opts.remoteport = "22"; | |
402 } | |
403 | |
404 /* If not explicitly specified with -t or -T, we don't want a pty if | |
405 * there's a command, but we do otherwise */ | |
406 if (cli_opts.wantpty == 9) { | |
407 if (cli_opts.cmd == NULL) { | |
408 cli_opts.wantpty = 1; | |
409 } else { | |
410 cli_opts.wantpty = 0; | |
411 } | |
412 } | |
326
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325
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|
413 |
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diff
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|
414 if (cli_opts.backgrounded && cli_opts.cmd == NULL |
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325
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|
415 && cli_opts.no_cmd == 0) { |
594
a98a2138364a
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580
diff
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|
416 dropbear_exit("Command required for -f"); |
326
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417 } |
449
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446
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|
418 |
483
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|
419 if (recv_window_arg) { |
449
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420 opts.recv_window = atol(recv_window_arg); |
483
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|
421 if (opts.recv_window == 0 || opts.recv_window > MAX_RECV_WINDOW) { |
449
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|
422 dropbear_exit("Bad recv window '%s'", recv_window_arg); |
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|
423 } |
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changeset
|
424 } |
454
7e43f5e473b9
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449
diff
changeset
|
425 if (keepalive_arg) { |
568
005530560594
Rearrange getaddrstring() etc
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551
diff
changeset
|
426 unsigned int val; |
005530560594
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diff
changeset
|
427 if (m_str_to_uint(keepalive_arg, &val) == DROPBEAR_FAILURE) { |
454
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changeset
|
428 dropbear_exit("Bad keepalive '%s'", keepalive_arg); |
7e43f5e473b9
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changeset
|
429 } |
568
005530560594
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551
diff
changeset
|
430 opts.keepalive_secs = val; |
454
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|
431 } |
487
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432 |
513
a3748e54273c
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509
diff
changeset
|
433 if (idle_timeout_arg) { |
568
005530560594
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551
diff
changeset
|
434 unsigned int val; |
005530560594
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diff
changeset
|
435 if (m_str_to_uint(idle_timeout_arg, &val) == DROPBEAR_FAILURE) { |
513
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diff
changeset
|
436 dropbear_exit("Bad idle_timeout '%s'", idle_timeout_arg); |
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Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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diff
changeset
|
437 } |
568
005530560594
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551
diff
changeset
|
438 opts.idle_timeout_secs = val; |
513
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Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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diff
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|
439 } |
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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509
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|
440 |
487
2e17f82a7330
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|
441 #ifdef ENABLE_CLI_NETCAT |
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442 if (cli_opts.cmd && cli_opts.netcat_host) { |
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|
443 dropbear_log(LOG_INFO, "Ignoring command '%s' in netcat mode", cli_opts.cmd); |
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444 } |
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445 #endif |
544
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|
446 |
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|
447 /* The hostname gets set up last, since |
9e51707cd6f2
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|
448 * in multi-hop mode it will require knowledge |
9e51707cd6f2
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|
449 * of other flags such as -i */ |
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|
450 #ifdef ENABLE_CLI_MULTIHOP |
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|
451 parse_multihop_hostname(host_arg, argv[0]); |
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|
452 #else |
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|
453 parse_hostname(host_arg); |
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|
454 #endif |
39
0883c0906870
tty raw mode support works mostly
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parents:
diff
changeset
|
455 } |
47 | 456 |
68
eee77ac31ccc
cleaning up the pubkey defines
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parents:
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|
457 #ifdef ENABLE_CLI_PUBKEY_AUTH |
47 | 458 static void loadidentityfile(const char* filename) { |
459 sign_key *key; | |
852
7540c0822374
Various cleanups and fixes for warnings
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|
460 enum signkey_type keytype; |
47 | 461 |
462 key = new_sign_key(); | |
463 keytype = DROPBEAR_SIGNKEY_ANY; | |
464 if ( readhostkey(filename, key, &keytype) != DROPBEAR_SUCCESS ) { | |
465 fprintf(stderr, "Failed loading keyfile '%s'\n", filename); | |
466 sign_key_free(key); | |
467 } else { | |
551
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468 key->type = keytype; |
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|
469 key->source = SIGNKEY_SOURCE_RAW_FILE; |
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diff
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|
470 key->filename = m_strdup(filename); |
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|
471 list_append(cli_opts.privkeys, key); |
47 | 472 } |
473 } | |
474 #endif | |
475 | |
487
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476 #ifdef ENABLE_CLI_MULTIHOP |
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|
477 |
544
9e51707cd6f2
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|
478 static char* |
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|
479 multihop_passthrough_args() { |
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480 char *ret; |
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|
481 int total; |
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parents:
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changeset
|
482 unsigned int len = 0; |
551
c3f2ec71e3d4
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parents:
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diff
changeset
|
483 m_list_elem *iter; |
772
7fc0aeada79c
-y -y to disable hostkey checking
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parents:
716
diff
changeset
|
484 /* Fill out -i, -y, -W options that make sense for all |
544
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parents:
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changeset
|
485 * the intermediate processes */ |
551
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diff
changeset
|
486 for (iter = cli_opts.privkeys->first; iter; iter = iter->next) |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
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diff
changeset
|
487 { |
551
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
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diff
changeset
|
488 sign_key * key = (sign_key*)iter->item; |
c3f2ec71e3d4
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diff
changeset
|
489 len += 3 + strlen(key->filename); |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
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|
490 } |
857 | 491 len += 30; /* space for -W <size>, terminator. */ |
544
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|
492 ret = m_malloc(len); |
9e51707cd6f2
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|
493 total = 0; |
9e51707cd6f2
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diff
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|
494 |
772
7fc0aeada79c
-y -y to disable hostkey checking
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parents:
716
diff
changeset
|
495 if (cli_opts.no_hostkey_check) |
7fc0aeada79c
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parents:
716
diff
changeset
|
496 { |
7fc0aeada79c
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diff
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|
497 int written = snprintf(ret+total, len-total, "-y -y "); |
7fc0aeada79c
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diff
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|
498 total += written; |
7fc0aeada79c
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parents:
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diff
changeset
|
499 } |
7fc0aeada79c
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parents:
716
diff
changeset
|
500 else if (cli_opts.always_accept_key) |
7fc0aeada79c
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parents:
716
diff
changeset
|
501 { |
7fc0aeada79c
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parents:
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diff
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|
502 int written = snprintf(ret+total, len-total, "-y "); |
7fc0aeada79c
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716
diff
changeset
|
503 total += written; |
7fc0aeada79c
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parents:
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diff
changeset
|
504 } |
7fc0aeada79c
-y -y to disable hostkey checking
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parents:
716
diff
changeset
|
505 |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
506 if (opts.recv_window != DEFAULT_RECV_WINDOW) |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
507 { |
772
7fc0aeada79c
-y -y to disable hostkey checking
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parents:
716
diff
changeset
|
508 int written = snprintf(ret+total, len-total, "-W %d ", opts.recv_window); |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
509 total += written; |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
510 } |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
511 |
551
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
512 for (iter = cli_opts.privkeys->first; iter; iter = iter->next) |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
513 { |
551
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
514 sign_key * key = (sign_key*)iter->item; |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
515 const size_t size = len - total; |
772
7fc0aeada79c
-y -y to disable hostkey checking
Matt Johnston <matt@ucc.asn.au>
parents:
716
diff
changeset
|
516 int written = snprintf(ret+total, size, "-i %s ", key->filename); |
568
005530560594
Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents:
551
diff
changeset
|
517 dropbear_assert((unsigned int)written < size); |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
518 total += written; |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
519 } |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
520 |
776
f7c8b786e595
changelog updates for 2013.57
Matt Johnston <matt@ucc.asn.au>
parents:
772
diff
changeset
|
521 /* if args were passed, total will be not zero, and it will have a space at the end, so remove that */ |
772
7fc0aeada79c
-y -y to disable hostkey checking
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parents:
716
diff
changeset
|
522 if (total > 0) |
7fc0aeada79c
-y -y to disable hostkey checking
Matt Johnston <matt@ucc.asn.au>
parents:
716
diff
changeset
|
523 { |
7fc0aeada79c
-y -y to disable hostkey checking
Matt Johnston <matt@ucc.asn.au>
parents:
716
diff
changeset
|
524 total--; |
7fc0aeada79c
-y -y to disable hostkey checking
Matt Johnston <matt@ucc.asn.au>
parents:
716
diff
changeset
|
525 } |
7fc0aeada79c
-y -y to disable hostkey checking
Matt Johnston <matt@ucc.asn.au>
parents:
716
diff
changeset
|
526 |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
527 return ret; |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
528 } |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
529 |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
530 /* Sets up 'onion-forwarding' connections. This will spawn |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
531 * a separate dbclient process for each hop. |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
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parents:
486
diff
changeset
|
532 * As an example, if the cmdline is |
2e17f82a7330
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parents:
486
diff
changeset
|
533 * dbclient wrt,madako,canyons |
2e17f82a7330
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486
diff
changeset
|
534 * then we want to run: |
2e17f82a7330
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parents:
486
diff
changeset
|
535 * dbclient -J "dbclient -B canyons:22 wrt,madako" canyons |
2e17f82a7330
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parents:
486
diff
changeset
|
536 * and then the inner dbclient will recursively run: |
2e17f82a7330
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486
diff
changeset
|
537 * dbclient -J "dbclient -B madako:22 wrt" madako |
2e17f82a7330
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parents:
486
diff
changeset
|
538 * etc for as many hosts as we want. |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
539 * |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
540 * Ports for hosts can be specified as host/port. |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
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parents:
486
diff
changeset
|
541 */ |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
542 static void parse_multihop_hostname(const char* orighostarg, const char* argv0) { |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
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parents:
486
diff
changeset
|
543 char *userhostarg = NULL; |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
544 char *hostbuf = NULL; |
574
b6665c1eac43
Remove extraneous semicolon
Matt Johnston <matt@ucc.asn.au>
parents:
568
diff
changeset
|
545 char *last_hop = NULL; |
487
2e17f82a7330
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parents:
486
diff
changeset
|
546 char *remainder = NULL; |
2e17f82a7330
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parents:
486
diff
changeset
|
547 |
494
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
548 /* both scp and rsync parse a user@host argument |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
549 * and turn it into "-l user host". This breaks |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
550 * for our multihop syntax, so we suture it back together. |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
551 * This will break usernames that have both '@' and ',' in them, |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
552 * though that should be fairly uncommon. */ |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
553 if (cli_opts.username |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
554 && strchr(cli_opts.username, ',') |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
555 && strchr(cli_opts.username, '@')) { |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
556 unsigned int len = strlen(orighostarg) + strlen(cli_opts.username) + 2; |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
557 hostbuf = m_malloc(len); |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
558 snprintf(hostbuf, len, "%s@%s", cli_opts.username, orighostarg); |
494
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
559 } else { |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
560 hostbuf = m_strdup(orighostarg); |
494
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
561 } |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
562 userhostarg = hostbuf; |
487
2e17f82a7330
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parents:
486
diff
changeset
|
563 |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
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parents:
486
diff
changeset
|
564 last_hop = strrchr(userhostarg, ','); |
2e17f82a7330
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parents:
486
diff
changeset
|
565 if (last_hop) { |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
566 if (last_hop == userhostarg) { |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
567 dropbear_exit("Bad multi-hop hostnames"); |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
568 } |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
569 *last_hop = '\0'; |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
570 last_hop++; |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
571 remainder = userhostarg; |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
572 userhostarg = last_hop; |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
573 } |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
574 |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
575 parse_hostname(userhostarg); |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
576 |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
577 if (last_hop) { |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
578 /* Set up the proxycmd */ |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
579 unsigned int cmd_len = 0; |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
580 char *passthrough_args = multihop_passthrough_args(); |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
581 if (cli_opts.proxycmd) { |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
582 dropbear_exit("-J can't be used with multihop mode"); |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
583 } |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
584 if (cli_opts.remoteport == NULL) { |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
585 cli_opts.remoteport = "22"; |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
586 } |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
587 cmd_len = strlen(argv0) + strlen(remainder) |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
588 + strlen(cli_opts.remotehost) + strlen(cli_opts.remoteport) |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
589 + strlen(passthrough_args) |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
590 + 30; |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
591 cli_opts.proxycmd = m_malloc(cmd_len); |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
592 snprintf(cli_opts.proxycmd, cmd_len, "%s -B %s:%s %s %s", |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
593 argv0, cli_opts.remotehost, cli_opts.remoteport, |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
594 passthrough_args, remainder); |
575
f9b5dc0cba61
- Disable compression for non-final multihops
Matt Johnston <matt@ucc.asn.au>
parents:
574
diff
changeset
|
595 #ifndef DISABLE_ZLIB |
f9b5dc0cba61
- Disable compression for non-final multihops
Matt Johnston <matt@ucc.asn.au>
parents:
574
diff
changeset
|
596 /* The stream will be incompressible since it's encrypted. */ |
f9b5dc0cba61
- Disable compression for non-final multihops
Matt Johnston <matt@ucc.asn.au>
parents:
574
diff
changeset
|
597 opts.enable_compress = 0; |
f9b5dc0cba61
- Disable compression for non-final multihops
Matt Johnston <matt@ucc.asn.au>
parents:
574
diff
changeset
|
598 #endif |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
599 m_free(passthrough_args); |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
600 } |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
601 m_free(hostbuf); |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
602 } |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
603 #endif /* !ENABLE_CLI_MULTIHOP */ |
47 | 604 |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
605 /* Parses a [user@]hostname[/port] argument. */ |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
606 static void parse_hostname(const char* orighostarg) { |
64 | 607 char *userhostarg = NULL; |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
608 char *port = NULL; |
64 | 609 |
610 userhostarg = m_strdup(orighostarg); | |
47 | 611 |
612 cli_opts.remotehost = strchr(userhostarg, '@'); | |
613 if (cli_opts.remotehost == NULL) { | |
614 /* no username portion, the cli-auth.c code can figure the | |
615 * local user's name */ | |
616 cli_opts.remotehost = userhostarg; | |
617 } else { | |
618 cli_opts.remotehost[0] = '\0'; /* Split the user/host */ | |
619 cli_opts.remotehost++; | |
620 cli_opts.username = userhostarg; | |
621 } | |
622 | |
623 if (cli_opts.username == NULL) { | |
483
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
624 cli_opts.username = m_strdup(cli_opts.own_user); |
47 | 625 } |
626 | |
895
5608a5a61c2a
Change port separator to ^ since % is used in ipv6 addresses
Matt Johnston <matt@ucc.asn.au>
parents:
857
diff
changeset
|
627 port = strchr(cli_opts.remotehost, '^'); |
783
34e69908b3f7
Use '#' for host#port separator, document it. This fixes scp
Matt Johnston <matt@ucc.asn.au>
parents:
776
diff
changeset
|
628 if (!port) { |
857 | 629 /* legacy separator */ |
783
34e69908b3f7
Use '#' for host#port separator, document it. This fixes scp
Matt Johnston <matt@ucc.asn.au>
parents:
776
diff
changeset
|
630 port = strchr(cli_opts.remotehost, '/'); |
34e69908b3f7
Use '#' for host#port separator, document it. This fixes scp
Matt Johnston <matt@ucc.asn.au>
parents:
776
diff
changeset
|
631 } |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
632 if (port) { |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
633 *port = '\0'; |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
634 cli_opts.remoteport = port+1; |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
635 } |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
636 |
47 | 637 if (cli_opts.remotehost[0] == '\0') { |
638 dropbear_exit("Bad hostname"); | |
639 } | |
640 } | |
64 | 641 |
485
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
642 #ifdef ENABLE_CLI_NETCAT |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
643 static void add_netcat(const char* origstr) { |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
644 char *portstr = NULL; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
645 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
646 char * str = m_strdup(origstr); |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
647 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
648 portstr = strchr(str, ':'); |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
649 if (portstr == NULL) { |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
650 TRACE(("No netcat port")) |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
651 goto fail; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
652 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
653 *portstr = '\0'; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
654 portstr++; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
655 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
656 if (strchr(portstr, ':')) { |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
657 TRACE(("Multiple netcat colons")) |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
658 goto fail; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
659 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
660 |
492
b956d6151600
Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents:
489
diff
changeset
|
661 if (m_str_to_uint(portstr, &cli_opts.netcat_port) == DROPBEAR_FAILURE) { |
485
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
662 TRACE(("bad netcat port")) |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
663 goto fail; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
664 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
665 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
666 if (cli_opts.netcat_port > 65535) { |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
667 TRACE(("too large netcat port")) |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
668 goto fail; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
669 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
670 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
671 cli_opts.netcat_host = str; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
672 return; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
673 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
674 fail: |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
675 dropbear_exit("Bad netcat endpoint '%s'", origstr); |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
676 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
677 #endif |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
678 |
483
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
679 static void fill_own_user() { |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
680 uid_t uid; |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
681 struct passwd *pw = NULL; |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
682 |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
683 uid = getuid(); |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
684 |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
685 pw = getpwuid(uid); |
961
a4032b946355
Be a bit safer in case pw_name doesn't exist
Matt Johnston <matt@ucc.asn.au>
parents:
958
diff
changeset
|
686 if (pw && pw->pw_name != NULL) { |
a4032b946355
Be a bit safer in case pw_name doesn't exist
Matt Johnston <matt@ucc.asn.au>
parents:
958
diff
changeset
|
687 cli_opts.own_user = m_strdup(pw->pw_name); |
a4032b946355
Be a bit safer in case pw_name doesn't exist
Matt Johnston <matt@ucc.asn.au>
parents:
958
diff
changeset
|
688 } else { |
958
1bf92da7a2a0
Try without identifying current user
iquaba <cooka2011@gmail.com>
parents:
946
diff
changeset
|
689 dropbear_log(LOG_INFO, "Warning: failed to identify current user. Trying anyway."); |
961
a4032b946355
Be a bit safer in case pw_name doesn't exist
Matt Johnston <matt@ucc.asn.au>
parents:
958
diff
changeset
|
690 cli_opts.own_user = m_strdup("unknown"); |
483
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
691 } |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
692 |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
693 } |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
694 |
64 | 695 #ifdef ENABLE_CLI_ANYTCPFWD |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
696 /* Turn a "[listenaddr:]listenport:remoteaddr:remoteport" string into into a forwarding |
64 | 697 * set, and add it to the forwarding list */ |
551
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
698 static void addforward(const char* origstr, m_list *fwdlist) { |
64 | 699 |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
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700 char *part1 = NULL, *part2 = NULL, *part3 = NULL, *part4 = NULL; |
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701 char * listenaddr = NULL; |
64 | 702 char * listenport = NULL; |
578
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703 char * connectaddr = NULL; |
64 | 704 char * connectport = NULL; |
551
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705 struct TCPFwdEntry* newfwd = NULL; |
64 | 706 char * str = NULL; |
707 | |
165
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708 TRACE(("enter addforward")) |
64 | 709 |
411
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710 /* We need to split the original argument up. This var |
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711 is never free()d. */ |
64 | 712 str = m_strdup(origstr); |
713 | |
578
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714 part1 = str; |
64 | 715 |
578
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716 part2 = strchr(str, ':'); |
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717 if (part2 == NULL) { |
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718 TRACE(("part2 == NULL")) |
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719 goto fail; |
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720 } |
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721 *part2 = '\0'; |
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722 part2++; |
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723 |
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724 part3 = strchr(part2, ':'); |
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725 if (part3 == NULL) { |
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726 TRACE(("part3 == NULL")) |
64 | 727 goto fail; |
728 } | |
578
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729 *part3 = '\0'; |
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730 part3++; |
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731 |
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732 part4 = strchr(part3, ':'); |
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733 if (part4) { |
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734 *part4 = '\0'; |
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735 part4++; |
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736 } |
64 | 737 |
578
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738 if (part4) { |
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739 listenaddr = part1; |
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740 listenport = part2; |
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741 connectaddr = part3; |
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742 connectport = part4; |
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743 } else { |
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744 listenaddr = NULL; |
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745 listenport = part1; |
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746 connectaddr = part2; |
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747 connectport = part3; |
64 | 748 } |
578
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749 |
551
c3f2ec71e3d4
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diff
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750 newfwd = m_malloc(sizeof(struct TCPFwdEntry)); |
64 | 751 |
752 /* Now we check the ports - note that the port ints are unsigned, | |
753 * the check later only checks for >= MAX_PORT */ | |
492
b956d6151600
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Matt Johnston <matt@ucc.asn.au>
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754 if (m_str_to_uint(listenport, &newfwd->listenport) == DROPBEAR_FAILURE) { |
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755 TRACE(("bad listenport strtoul")) |
64 | 756 goto fail; |
757 } | |
758 | |
492
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diff
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759 if (m_str_to_uint(connectport, &newfwd->connectport) == DROPBEAR_FAILURE) { |
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760 TRACE(("bad connectport strtoul")) |
64 | 761 goto fail; |
762 } | |
763 | |
578
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diff
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764 newfwd->listenaddr = listenaddr; |
64 | 765 newfwd->connectaddr = connectaddr; |
766 | |
767 if (newfwd->listenport > 65535) { | |
165
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768 TRACE(("listenport > 65535")) |
64 | 769 goto badport; |
770 } | |
771 | |
772 if (newfwd->connectport > 65535) { | |
165
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773 TRACE(("connectport > 65535")) |
64 | 774 goto badport; |
775 } | |
776 | |
505
805e557fdff7
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497
diff
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777 newfwd->have_reply = 0; |
551
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New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
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diff
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778 list_append(fwdlist, newfwd); |
64 | 779 |
165
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780 TRACE(("leave addforward: done")) |
64 | 781 return; |
782 | |
783 fail: | |
784 dropbear_exit("Bad TCP forward '%s'", origstr); | |
785 | |
786 badport: | |
787 dropbear_exit("Bad TCP port in '%s'", origstr); | |
788 } | |
789 #endif |