annotate cli-runopts.c @ 494:66eac4631d88

- Work around rsync and scp parsing and modifying the [email protected] argument, which break's dbclient's multihop syntax
author Matt Johnston <matt@ucc.asn.au>
date Mon, 22 Sep 2008 15:47:35 +0000
parents b956d6151600
children ae600f1eef81
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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"
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31 #include "tcpfwd.h"
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32
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33 cli_runopts cli_opts; /* GLOBAL */
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34
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35 static void printhelp();
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36 static void parse_hostname(const char* orighostarg);
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37 static void parse_multihop_hostname(const char* orighostarg, const char* argv0);
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38 static void fill_own_user();
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39 #ifdef ENABLE_CLI_PUBKEY_AUTH
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40 static void loadidentityfile(const char* filename);
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41 #endif
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42 #ifdef ENABLE_CLI_ANYTCPFWD
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43 static void addforward(const char* str, struct TCPFwdList** fwdlist);
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44 #endif
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45 #ifdef ENABLE_CLI_NETCAT
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46 static void add_netcat(const char *str);
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47 #endif
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48
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49 static void printhelp() {
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50
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51 fprintf(stderr, "Dropbear client v%s\n"
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52 "Usage: %s [options] [[email protected]]host[/port] [command]\n"
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53 "Options are:\n"
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54 "-p <remoteport>\n"
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55 "-l <username>\n"
56
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56 "-t Allocate a pty\n"
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57 "-T Don't allocate a pty\n"
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58 "-N Don't run a remote command\n"
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59 "-f Run in background after auth\n"
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60 "-y Always accept remote host key if unknown\n"
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61 #ifdef ENABLE_CLI_PUBKEY_AUTH
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62 "-i <identityfile> (multiple allowed)\n"
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63 #endif
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64 #ifdef ENABLE_CLI_LOCALTCPFWD
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65 "-L <listenport:remotehost:remoteport> Local port forwarding\n"
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66 "-g Allow remote hosts to connect to forwarded ports\n"
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67 #endif
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68 #ifdef ENABLE_CLI_REMOTETCPFWD
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69 "-R <listenport:remotehost:remoteport> Remote port forwarding\n"
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70 #endif
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71 "-W <receive_window_buffer> (default %d, larger may be faster, max 1MB)\n"
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72 "-K <keepalive> (0 is never, default %d)\n"
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73 #ifdef ENABLE_CLI_NETCAT
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74 "-B <endhost:endport> Netcat-alike bouncing\n"
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75 #endif
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76 #ifdef ENABLE_CLI_PROXYCMD
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77 "-J <proxy_program> Use program rather than tcp connection\n"
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78 #endif
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79 #ifdef DEBUG_TRACE
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80 "-v verbose\n"
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81 #endif
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82 ,DROPBEAR_VERSION, cli_opts.progname,
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83 DEFAULT_RECV_WINDOW, DEFAULT_KEEPALIVE);
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84
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85 }
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86
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87 void cli_getopts(int argc, char ** argv) {
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88
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89 unsigned int i, j;
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90 char ** next = 0;
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91 unsigned int cmdlen;
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92 #ifdef ENABLE_CLI_PUBKEY_AUTH
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93 int nextiskey = 0; /* A flag if the next argument is a keyfile */
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94 #endif
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95 #ifdef ENABLE_CLI_LOCALTCPFWD
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96 int nextislocal = 0;
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97 #endif
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98 #ifdef ENABLE_CLI_REMOTETCPFWD
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99 int nextisremote = 0;
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100 #endif
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101 #ifdef ENABLE_CLI_NETCAT
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102 int nextisnetcat = 0;
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103 #endif
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104 char* dummy = NULL; /* Not used for anything real */
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105
459
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106 char* recv_window_arg = NULL;
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107 char* keepalive_arg = NULL;
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108
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109 /* see printhelp() for options */
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110 cli_opts.progname = argv[0];
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111 cli_opts.remotehost = NULL;
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112 cli_opts.remoteport = NULL;
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113 cli_opts.username = NULL;
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114 cli_opts.cmd = NULL;
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115 cli_opts.no_cmd = 0;
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116 cli_opts.backgrounded = 0;
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117 cli_opts.wantpty = 9; /* 9 means "it hasn't been touched", gets set later */
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118 cli_opts.always_accept_key = 0;
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119 #ifdef ENABLE_CLI_PUBKEY_AUTH
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120 cli_opts.privkeys = NULL;
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121 #endif
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122 #ifdef ENABLE_CLI_LOCALTCPFWD
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123 cli_opts.localfwds = NULL;
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124 opts.listen_fwd_all = 0;
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125 #endif
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126 #ifdef ENABLE_CLI_REMOTETCPFWD
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127 cli_opts.remotefwds = NULL;
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128 #endif
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129 #ifdef ENABLE_CLI_PROXYCMD
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130 cli_opts.proxycmd = NULL;
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131 #endif
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132 /* not yet
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133 opts.ipv4 = 1;
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134 opts.ipv6 = 1;
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135 */
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136 opts.recv_window = DEFAULT_RECV_WINDOW;
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137
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138 fill_own_user();
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139
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140 /* Iterate all the arguments */
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141 for (i = 1; i < (unsigned int)argc; i++) {
68
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Matt Johnston <matt@ucc.asn.au>
parents: 66
diff changeset
142 #ifdef ENABLE_CLI_PUBKEY_AUTH
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
143 if (nextiskey) {
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
144 /* Load a hostkey since the previous argument was "-i" */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
145 loadidentityfile(argv[i]);
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
146 nextiskey = 0;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
147 continue;
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148 }
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
149 #endif
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
150 #ifdef ENABLE_CLI_REMOTETCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
151 if (nextisremote) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 134
diff changeset
152 TRACE(("nextisremote true"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
153 addforward(argv[i], &cli_opts.remotefwds);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
154 nextisremote = 0;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
155 continue;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
156 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
157 #endif
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
158 #ifdef ENABLE_CLI_LOCALTCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
159 if (nextislocal) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 134
diff changeset
160 TRACE(("nextislocal true"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
161 addforward(argv[i], &cli_opts.localfwds);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
162 nextislocal = 0;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
163 continue;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
164 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
165 #endif
485
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
166 #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
167 if (nextisnetcat) {
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
168 TRACE(("nextisnetcat true"))
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
169 add_netcat(argv[i]);
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
170 nextisnetcat = 0;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
171 continue;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
172 }
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
173 #endif
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 if (next) {
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
175 /* The previous flag set a value to assign */
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 *next = argv[i];
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177 if (*next == NULL) {
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
178 dropbear_exit("Invalid null argument");
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 }
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
180 next = NULL;
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 continue;
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 }
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 if (argv[i][0] == '-') {
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
185 /* A flag *waves* */
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
186
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 switch (argv[i][1]) {
418
ab57ba0cb667 Add '-y' option to dbclient to accept the host key without checking
Matt Johnston <matt@ucc.asn.au>
parents: 412
diff changeset
188 case 'y': /* always accept the remote hostkey */
ab57ba0cb667 Add '-y' option to dbclient to accept the host key without checking
Matt Johnston <matt@ucc.asn.au>
parents: 412
diff changeset
189 cli_opts.always_accept_key = 1;
ab57ba0cb667 Add '-y' option to dbclient to accept the host key without checking
Matt Johnston <matt@ucc.asn.au>
parents: 412
diff changeset
190 break;
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
191 case 'p': /* remoteport */
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
192 next = &cli_opts.remoteport;
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
193 break;
68
eee77ac31ccc cleaning up the pubkey defines
Matt Johnston <matt@ucc.asn.au>
parents: 66
diff changeset
194 #ifdef ENABLE_CLI_PUBKEY_AUTH
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
195 case 'i': /* an identityfile */
134
6b306ad5f5b5 -i works with scp now.
Matt Johnston <matt@ucc.asn.au>
parents: 105
diff changeset
196 /* Keep scp happy when it changes "-i file" to "-ifile" */
6b306ad5f5b5 -i works with scp now.
Matt Johnston <matt@ucc.asn.au>
parents: 105
diff changeset
197 if (strlen(argv[i]) > 2) {
6b306ad5f5b5 -i works with scp now.
Matt Johnston <matt@ucc.asn.au>
parents: 105
diff changeset
198 loadidentityfile(&argv[i][2]);
6b306ad5f5b5 -i works with scp now.
Matt Johnston <matt@ucc.asn.au>
parents: 105
diff changeset
199 } else {
6b306ad5f5b5 -i works with scp now.
Matt Johnston <matt@ucc.asn.au>
parents: 105
diff changeset
200 nextiskey = 1;
6b306ad5f5b5 -i works with scp now.
Matt Johnston <matt@ucc.asn.au>
parents: 105
diff changeset
201 }
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 break;
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 #endif
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
204 case 't': /* we want a pty */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
205 cli_opts.wantpty = 1;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
206 break;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
207 case 'T': /* don't want a pty */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
208 cli_opts.wantpty = 0;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
209 break;
325
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
210 case 'N':
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
211 cli_opts.no_cmd = 1;
0e4f225b7e07 Add -N "no remote command" dbclient option.
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
212 break;
326
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
213 case 'f':
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
214 cli_opts.backgrounded = 1;
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
215 break;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
216 #ifdef ENABLE_CLI_LOCALTCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
217 case 'L':
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
218 nextislocal = 1;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
219 break;
258
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
220 case 'g':
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
221 opts.listen_fwd_all = 1;
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local
Matt Johnston <matt@ucc.asn.au>
parents: 215
diff changeset
222 break;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
223 #endif
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
224 #ifdef ENABLE_CLI_REMOTETCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
225 case 'R':
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
226 nextisremote = 1;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
227 break;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
228 #endif
485
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
229 #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
230 case 'B':
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
231 nextisnetcat = 1;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
232 break;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
233 #endif
479
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
234 #ifdef ENABLE_CLI_PROXYCMD
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
235 case 'J':
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
236 next = &cli_opts.proxycmd;
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
237 break;
e3db1f7a2e43 - Split main socket var into ses.sock_in/ses.sock_out in preparation
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
238 #endif
66
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
239 case 'l':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
240 next = &cli_opts.username;
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
241 break;
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
242 case 'h':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
243 printhelp();
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
244 exit(EXIT_SUCCESS);
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
245 break;
442
d82a2a44c684 Add -u option to specify /dev/urandom instead
Matt Johnston <matt@ucc.asn.au>
parents: 418
diff changeset
246 case 'u':
446
2cd2edfa11ee Just use /dev/urandom since that's what everyone ends up using anyway.
Matt Johnston <matt@ucc.asn.au>
parents: 442
diff changeset
247 /* backwards compatibility with old urandom option */
442
d82a2a44c684 Add -u option to specify /dev/urandom instead
Matt Johnston <matt@ucc.asn.au>
parents: 418
diff changeset
248 break;
449
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
249 case 'W':
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
250 next = &recv_window_arg;
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
251 break;
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
252 case 'K':
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
253 next = &keepalive_arg;
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
254 break;
94
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
255 #ifdef DEBUG_TRACE
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
256 case 'v':
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
257 debug_trace = 1;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
258 break;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline
Matt Johnston <matt@ucc.asn.au>
parents: 68
diff changeset
259 #endif
66
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
260 case 'F':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
261 case 'e':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
262 case 'c':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
263 case 'm':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
264 case 'D':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
265 #ifndef ENABLE_CLI_REMOTETCPFWD
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
266 case 'R':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
267 #endif
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
268 #ifndef ENABLE_CLI_LOCALTCPFWD
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
269 case 'L':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
270 #endif
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
271 case 'o':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
272 case 'b':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
273 next = &dummy;
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
274 default:
66
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
275 fprintf(stderr,
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
276 "WARNING: Ignoring unknown argument '%s'\n", argv[i]);
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
277 break;
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
278 } /* Switch */
105
68b84c20ca1e Fix for "-l" scp option
Matt Johnston <matt@ucc.asn.au>
parents: 94
diff changeset
279
68b84c20ca1e Fix for "-l" scp option
Matt Johnston <matt@ucc.asn.au>
parents: 94
diff changeset
280 /* Now we handle args where they might be "-luser" (no spaces)*/
68b84c20ca1e Fix for "-l" scp option
Matt Johnston <matt@ucc.asn.au>
parents: 94
diff changeset
281 if (next && strlen(argv[i]) > 2) {
68b84c20ca1e Fix for "-l" scp option
Matt Johnston <matt@ucc.asn.au>
parents: 94
diff changeset
282 *next = &argv[i][2];
68b84c20ca1e Fix for "-l" scp option
Matt Johnston <matt@ucc.asn.au>
parents: 94
diff changeset
283 next = NULL;
68b84c20ca1e Fix for "-l" scp option
Matt Johnston <matt@ucc.asn.au>
parents: 94
diff changeset
284 }
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
285
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
286 continue; /* next argument */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
287
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
288 } else {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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parents: 134
diff changeset
289 TRACE(("non-flag arg: '%s'", argv[i]))
46
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parents: 40
diff changeset
290
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parents: 40
diff changeset
291 /* Either the hostname or commands */
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parents: 40
diff changeset
292
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
293 if (cli_opts.remotehost == NULL) {
489
79c657a673ec - Allow specifying a port with host/port.
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parents: 487
diff changeset
294 #ifdef ENABLE_CLI_MULTIHOP
79c657a673ec - Allow specifying a port with host/port.
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diff changeset
295 parse_multihop_hostname(argv[i], argv[0]);
79c657a673ec - Allow specifying a port with host/port.
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diff changeset
296 #else
79c657a673ec - Allow specifying a port with host/port.
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diff changeset
297 parse_hostname(argv[i]);
79c657a673ec - Allow specifying a port with host/port.
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parents: 487
diff changeset
298 #endif
47
4b53a43f0082 - client pubkey auth works
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diff changeset
299 } else {
46
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diff changeset
300
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
301 /* this is part of the commands to send - after this we
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parents: 40
diff changeset
302 * don't parse any more options, and flags are sent as the
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
303 * command */
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parents: 40
diff changeset
304 cmdlen = 0;
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parents: 40
diff changeset
305 for (j = i; j < (unsigned int)argc; j++) {
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
306 cmdlen += strlen(argv[j]) + 1; /* +1 for spaces */
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
307 }
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
308 /* Allocate the space */
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
309 cli_opts.cmd = (char*)m_malloc(cmdlen);
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
310 cli_opts.cmd[0] = '\0';
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
311
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
312 /* Append all the bits */
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
313 for (j = i; j < (unsigned int)argc; j++) {
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
314 strlcat(cli_opts.cmd, argv[j], cmdlen);
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
315 strlcat(cli_opts.cmd, " ", cmdlen);
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parents: 40
diff changeset
316 }
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parents: 40
diff changeset
317 /* It'll be null-terminated here */
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parents: 40
diff changeset
318
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
319 /* We've eaten all the options and flags */
3bea78e1b175 Filled out a bit, with commandline support etc
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parents: 40
diff changeset
320 break;
39
0883c0906870 tty raw mode support works mostly
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parents:
diff changeset
321 }
0883c0906870 tty raw mode support works mostly
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parents:
diff changeset
322 }
0883c0906870 tty raw mode support works mostly
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parents:
diff changeset
323 }
47
4b53a43f0082 - client pubkey auth works
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diff changeset
324
487
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
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diff changeset
325 /* And now a few sanity checks and setup */
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parents: 486
diff changeset
326
47
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diff changeset
327 if (cli_opts.remotehost == NULL) {
66
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
328 printhelp();
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
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parents: 64
diff changeset
329 exit(EXIT_FAILURE);
47
4b53a43f0082 - client pubkey auth works
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diff changeset
330 }
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
331
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
332 if (cli_opts.remoteport == NULL) {
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
333 cli_opts.remoteport = "22";
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parents: 46
diff changeset
334 }
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parents: 46
diff changeset
335
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
336 /* If not explicitly specified with -t or -T, we don't want a pty if
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
337 * there's a command, but we do otherwise */
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parents: 46
diff changeset
338 if (cli_opts.wantpty == 9) {
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parents: 46
diff changeset
339 if (cli_opts.cmd == NULL) {
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parents: 46
diff changeset
340 cli_opts.wantpty = 1;
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parents: 46
diff changeset
341 } else {
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parents: 46
diff changeset
342 cli_opts.wantpty = 0;
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
343 }
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
344 }
326
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
345
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
346 if (cli_opts.backgrounded && cli_opts.cmd == NULL
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
347 && cli_opts.no_cmd == 0) {
d965110e3f5c add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
348 dropbear_exit("command required for -f");
d965110e3f5c add -f background option to dbclient
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parents: 325
diff changeset
349 }
449
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
350
483
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
351 if (recv_window_arg) {
449
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
352 opts.recv_window = atol(recv_window_arg);
483
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
353 if (opts.recv_window == 0 || opts.recv_window > MAX_RECV_WINDOW) {
449
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
354 dropbear_exit("Bad recv window '%s'", recv_window_arg);
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
355 }
3e6c536bc023 Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents: 446
diff changeset
356 }
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
357 if (keepalive_arg) {
492
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents: 489
diff changeset
358 if (m_str_to_uint(keepalive_arg, &opts.keepalive_secs) == DROPBEAR_FAILURE) {
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
359 dropbear_exit("Bad keepalive '%s'", keepalive_arg);
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
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parents: 449
diff changeset
360 }
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
361 }
487
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
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parents: 486
diff changeset
362
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
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parents: 486
diff changeset
363 #ifdef ENABLE_CLI_NETCAT
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parents: 486
diff changeset
364 if (cli_opts.cmd && cli_opts.netcat_host) {
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parents: 486
diff changeset
365 dropbear_log(LOG_INFO, "Ignoring command '%s' in netcat mode", cli_opts.cmd);
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parents: 486
diff changeset
366 }
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parents: 486
diff changeset
367 #endif
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 449
diff changeset
368
39
0883c0906870 tty raw mode support works mostly
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parents:
diff changeset
369 }
47
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
370
68
eee77ac31ccc cleaning up the pubkey defines
Matt Johnston <matt@ucc.asn.au>
parents: 66
diff changeset
371 #ifdef ENABLE_CLI_PUBKEY_AUTH
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
372 static void loadidentityfile(const char* filename) {
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
373
215
aad4b3f58556 rename PubkeyList to SignKeyList for clarity
Matt Johnston <matt@ucc.asn.au>
parents: 181
diff changeset
374 struct SignKeyList * nextkey;
47
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
375 sign_key *key;
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
376 int keytype;
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
377
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
378 key = new_sign_key();
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
379 keytype = DROPBEAR_SIGNKEY_ANY;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
380 if ( readhostkey(filename, key, &keytype) != DROPBEAR_SUCCESS ) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
381
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
382 fprintf(stderr, "Failed loading keyfile '%s'\n", filename);
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
383 sign_key_free(key);
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
384
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
385 } else {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
386
215
aad4b3f58556 rename PubkeyList to SignKeyList for clarity
Matt Johnston <matt@ucc.asn.au>
parents: 181
diff changeset
387 nextkey = (struct SignKeyList*)m_malloc(sizeof(struct SignKeyList));
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
388 nextkey->key = key;
215
aad4b3f58556 rename PubkeyList to SignKeyList for clarity
Matt Johnston <matt@ucc.asn.au>
parents: 181
diff changeset
389 nextkey->next = cli_opts.privkeys;
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
390 nextkey->type = keytype;
215
aad4b3f58556 rename PubkeyList to SignKeyList for clarity
Matt Johnston <matt@ucc.asn.au>
parents: 181
diff changeset
391 cli_opts.privkeys = nextkey;
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
392 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
393 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
394 #endif
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
395
487
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
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parents: 486
diff changeset
396 #ifdef ENABLE_CLI_MULTIHOP
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
397
489
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
398 /* 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
399 * a separate dbclient process for each hop.
487
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
400 * As an example, if the cmdline is
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
401 * dbclient wrt,madako,canyons
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
402 * then we want to run:
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
403 * dbclient -J "dbclient -B canyons:22 wrt,madako" canyons
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
404 * and then the inner dbclient will recursively run:
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
405 * dbclient -J "dbclient -B madako:22 wrt" madako
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
406 * 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
407 *
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
408 * Ports for hosts can be specified as host/port.
487
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
409 */
489
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
410 static void parse_multihop_hostname(const char* orighostarg, const char* argv0) {
487
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
411 char *userhostarg = NULL;
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
412 char *last_hop = NULL;;
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
413 char *remainder = NULL;
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
414
494
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
415 /* both scp and rsync parse a [email protected] argument
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
416 * and turn it into "-l user host". This breaks
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
417 * for our multihop syntax, so we suture it back together.
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
418 * This will break usernames that have both '@' and ',' in them,
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
419 * though that should be fairly uncommon. */
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
420 if (cli_opts.username
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
421 && strchr(cli_opts.username, ',')
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
422 && strchr(cli_opts.username, '@')) {
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
423 unsigned int len = strlen(orighostarg) + strlen(cli_opts.username) + 2;
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
424 userhostarg = m_malloc(len);
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
425 snprintf(userhostarg, len, "%[email protected]%s", cli_opts.username, orighostarg);
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
426 } else {
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
427 userhostarg = m_strdup(orighostarg);
66eac4631d88 - Work around rsync and scp parsing and modifying the [email protected] argument,
Matt Johnston <matt@ucc.asn.au>
parents: 492
diff changeset
428 }
487
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
429
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
430 last_hop = strrchr(userhostarg, ',');
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
431 if (last_hop) {
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
432 if (last_hop == userhostarg) {
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
433 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
434 }
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
435 *last_hop = '\0';
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
436 last_hop++;
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
437 remainder = userhostarg;
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
438 userhostarg = last_hop;
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
439 }
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
440
489
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
441 parse_hostname(userhostarg);
487
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
442
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
443 if (last_hop) {
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
444 /* Set up the proxycmd */
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
445 unsigned int cmd_len = 0;
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
446 if (cli_opts.proxycmd) {
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
447 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
448 }
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
449 if (cli_opts.remoteport == NULL) {
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
450 cli_opts.remoteport = "22";
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
451 }
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
452 cmd_len = strlen(remainder)
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
453 + strlen(cli_opts.remotehost) + strlen(cli_opts.remoteport)
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
454 + strlen(argv0) + 30;
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
455 cli_opts.proxycmd = m_malloc(cmd_len);
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
456 snprintf(cli_opts.proxycmd, cmd_len, "%s -B %s:%s %s",
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
457 argv0, cli_opts.remotehost, cli_opts.remoteport, remainder);
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
458 }
2e17f82a7330 Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents: 486
diff changeset
459 }
489
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
460 #endif /* !ENABLE_CLI_MULTIHOP */
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
461
489
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
462 /* Parses a [[email protected]]hostname[/port] argument. */
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
463 static void parse_hostname(const char* orighostarg) {
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
464 char *userhostarg = NULL;
489
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
465 char *port = NULL;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
466
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
467 userhostarg = m_strdup(orighostarg);
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
468
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
469 cli_opts.remotehost = strchr(userhostarg, '@');
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
470 if (cli_opts.remotehost == NULL) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
471 /* no username portion, the cli-auth.c code can figure the
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
472 * local user's name */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
473 cli_opts.remotehost = userhostarg;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
474 } else {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
475 cli_opts.remotehost[0] = '\0'; /* Split the user/host */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
476 cli_opts.remotehost++;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
477 cli_opts.username = userhostarg;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
478 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
479
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
480 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
481 cli_opts.username = m_strdup(cli_opts.own_user);
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
482 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
483
489
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
484 port = strchr(cli_opts.remotehost, '/');
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
485 if (port) {
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
486 *port = '\0';
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
487 cli_opts.remoteport = port+1;
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
488 }
79c657a673ec - Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents: 487
diff changeset
489
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
490 if (cli_opts.remotehost[0] == '\0') {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
491 dropbear_exit("Bad hostname");
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
492 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
493 }
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
494
485
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
495 #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
496 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
497 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
498
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
499 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
500
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
501 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
502 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
503 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
504 goto fail;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
505 }
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
506 *portstr = '\0';
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
507 portstr++;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
508
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
509 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
510 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
511 goto fail;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
512 }
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
513
492
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents: 489
diff changeset
514 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
515 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
516 goto fail;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
517 }
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
518
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
519 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
520 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
521 goto fail;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
522 }
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
523
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
524 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
525 return;
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
526
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
527 fail:
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
528 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
529 }
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
530 #endif
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
531
483
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
532 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
533 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
534 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
535
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
536 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
537
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
538 pw = getpwuid(uid);
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
539 if (pw == NULL || pw->pw_name == NULL) {
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
540 dropbear_exit("Unknown 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
541 }
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
542
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
543 cli_opts.own_user = m_strdup(pw->pw_name);
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
544 }
738313e73b1c - "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents: 479
diff changeset
545
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
546 #ifdef ENABLE_CLI_ANYTCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
547 /* Turn a "listenport:remoteaddr:remoteport" string into into a forwarding
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
548 * set, and add it to the forwarding list */
485
12d845ab7b5f Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents: 459
diff changeset
549 static void addforward(const char* origstr, struct TCPFwdList** fwdlist) {
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
550
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
551 char * listenport = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
552 char * connectport = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
553 char * connectaddr = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
554 struct TCPFwdList* newfwd = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
555 char * str = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
556
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 134
diff changeset
557 TRACE(("enter addforward"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
558
411
253958302381 Revert bogus fix, make a note that the var is meant to 'leak'
Matt Johnston <matt@ucc.asn.au>
parents: 407
diff changeset
559 /* We need to split the original argument up. This var
253958302381 Revert bogus fix, make a note that the var is meant to 'leak'
Matt Johnston <matt@ucc.asn.au>
parents: 407
diff changeset
560 is never free()d. */
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
561 str = m_strdup(origstr);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
562
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
563 listenport = str;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
564
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
565 connectaddr = strchr(str, ':');
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
566 if (connectaddr == NULL) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 134
diff changeset
567 TRACE(("connectaddr == NULL"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
568 goto fail;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
569 }
407
ea0929224294 Fix another leak found by Klocwork
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
570 *connectaddr = '\0';
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
571 connectaddr++;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
572
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
573 connectport = strchr(connectaddr, ':');
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
574 if (connectport == NULL) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 134
diff changeset
575 TRACE(("connectport == NULL"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
576 goto fail;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
577 }
407
ea0929224294 Fix another leak found by Klocwork
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
578 *connectport = '\0';
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
579 connectport++;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
580
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
581 newfwd = (struct TCPFwdList*)m_malloc(sizeof(struct TCPFwdList));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
582
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
583 /* Now we check the ports - note that the port ints are unsigned,
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
584 * the check later only checks for >= MAX_PORT */
492
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents: 489
diff changeset
585 if (m_str_to_uint(listenport, &newfwd->listenport) == DROPBEAR_FAILURE) {
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents: 489
diff changeset
586 TRACE(("bad listenport strtoul"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
587 goto fail;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
588 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
589
492
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents: 489
diff changeset
590 if (m_str_to_uint(connectport, &newfwd->connectport) == DROPBEAR_FAILURE) {
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents: 489
diff changeset
591 TRACE(("bad connectport strtoul"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
592 goto fail;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
593 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
594
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
595 newfwd->connectaddr = connectaddr;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
596
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
597 if (newfwd->listenport > 65535) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 134
diff changeset
598 TRACE(("listenport > 65535"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
599 goto badport;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
600 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
601
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
602 if (newfwd->connectport > 65535) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 134
diff changeset
603 TRACE(("connectport > 65535"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
604 goto badport;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
605 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
606
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
607 newfwd->next = *fwdlist;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
608 *fwdlist = newfwd;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
609
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 134
diff changeset
610 TRACE(("leave addforward: done"))
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
611 return;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
612
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
613 fail:
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
614 dropbear_exit("Bad TCP forward '%s'", origstr);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
615
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
616 badport:
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
617 dropbear_exit("Bad TCP port in '%s'", origstr);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
618 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
619 #endif