Mercurial > dropbear
annotate cli-runopts.c @ 1665:7c17995bcdfb
Improve address logging on early exit messages (#83)
Change 'Early exit' and 'Exit before auth' messages to include the IP
address & port as part of the message.
This allows log scanning utilities such as 'fail2ban' to obtain the
offending IP address as part of the failure event instead of extracting
the PID from the message and then scanning the log again for match
'child connection from' messages
Signed-off-by: Kevin Darbyshire-Bryant <[email protected]>
author | Kevin Darbyshire-Bryant <6500011+ldir-EDB0@users.noreply.github.com> |
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date | Wed, 18 Mar 2020 15:28:56 +0000 |
parents | 21dabe66f2c8 |
children | f8d8af12ac14 |
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 |
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36 static void printhelp(void); |
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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(void); |
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40 #if DROPBEAR_CLI_PUBKEY_AUTH |
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41 static void loadidentityfile(const char* filename, int warnfail); |
47 | 42 #endif |
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43 #if DROPBEAR_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 #if DROPBEAR_CLI_NETCAT |
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47 static void add_netcat(const char *str); |
64 | 48 #endif |
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49 static void add_extendedopt(const char *str); |
39
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50 |
47 | 51 static void printhelp() { |
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52 |
716 | 53 fprintf(stderr, "Dropbear SSH client v%s https://matt.ucc.asn.au/dropbear/dropbear.html\n" |
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54 #if DROPBEAR_CLI_MULTIHOP |
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55 "Usage: %s [options] [user@]host[/port][,[user@]host/port],...] [command]\n" |
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56 #else |
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57 "Usage: %s [options] [user@]host[/port] [command]\n" |
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58 #endif |
47 | 59 "-p <remoteport>\n" |
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60 "-l <username>\n" |
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61 "-t Allocate a pty\n" |
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62 "-T Don't allocate a pty\n" |
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63 "-N Don't run a remote command\n" |
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64 "-f Run in background after auth\n" |
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65 "-y Always accept remote host key if unknown\n" |
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66 "-y -y Don't perform any remote host key checking (caution)\n" |
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67 "-s Request a subsystem (use by external sftp)\n" |
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68 "-o option Set option in OpenSSH-like format ('-o help' to list options)\n" |
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69 #if DROPBEAR_CLI_PUBKEY_AUTH |
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70 "-i <identityfile> (multiple allowed, default %s)\n" |
47 | 71 #endif |
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72 #if DROPBEAR_CLI_AGENTFWD |
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73 "-A Enable agent auth forwarding\n" |
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74 #endif |
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75 #if DROPBEAR_CLI_LOCALTCPFWD |
580 | 76 "-L <[listenaddress:]listenport:remotehost:remoteport> Local port forwarding\n" |
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77 "-g Allow remote hosts to connect to forwarded ports\n" |
62 | 78 #endif |
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79 #if DROPBEAR_CLI_REMOTETCPFWD |
580 | 80 "-R <[listenaddress:]listenport:remotehost:remoteport> Remote port forwarding\n" |
62 | 81 #endif |
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82 "-W <receive_window_buffer> (default %d, larger may be faster, max 1MB)\n" |
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83 "-K <keepalive> (0 is never, default %d)\n" |
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84 "-I <idle_timeout> (0 is never, default %d)\n" |
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85 #if DROPBEAR_CLI_NETCAT |
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86 "-B <endhost:endport> Netcat-alike forwarding\n" |
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87 #endif |
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88 #if DROPBEAR_CLI_PROXYCMD |
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89 "-J <proxy_program> Use program pipe rather than TCP connection\n" |
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90 #endif |
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91 #if DROPBEAR_USER_ALGO_LIST |
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92 "-c <cipher list> Specify preferred ciphers ('-c help' to list options)\n" |
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93 "-m <MAC list> Specify preferred MACs for packet verification (or '-m help')\n" |
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94 #endif |
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95 "-b [bind_address][:bind_port]\n" |
946 | 96 "-V Version\n" |
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97 #if DEBUG_TRACE |
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98 "-v verbose (compiled with DEBUG_TRACE)\n" |
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99 #endif |
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100 ,DROPBEAR_VERSION, cli_opts.progname, |
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101 #if DROPBEAR_CLI_PUBKEY_AUTH |
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102 DROPBEAR_DEFAULT_CLI_AUTHKEY, |
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103 #endif |
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104 DEFAULT_RECV_WINDOW, DEFAULT_KEEPALIVE, DEFAULT_IDLE_TIMEOUT); |
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105 |
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106 } |
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107 |
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108 void cli_getopts(int argc, char ** argv) { |
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109 unsigned int i, j; |
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110 char ** next = NULL; |
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111 enum { |
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112 OPT_EXTENDED_OPTIONS, |
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113 #if DROPBEAR_CLI_PUBKEY_AUTH |
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114 OPT_AUTHKEY, |
47 | 115 #endif |
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116 #if DROPBEAR_CLI_LOCALTCPFWD |
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117 OPT_LOCALTCPFWD, |
62 | 118 #endif |
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119 #if DROPBEAR_CLI_REMOTETCPFWD |
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120 OPT_REMOTETCPFWD, |
62 | 121 #endif |
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122 #if DROPBEAR_CLI_NETCAT |
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123 OPT_NETCAT, |
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124 #endif |
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125 /* a flag (no arg) if 'next' is NULL, a string-valued option otherwise */ |
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126 OPT_OTHER |
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127 } opt; |
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128 unsigned int cmdlen; |
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129 |
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|
130 char* recv_window_arg = NULL; |
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|
131 char* keepalive_arg = NULL; |
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|
132 char* idle_timeout_arg = NULL; |
544
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|
133 char *host_arg = NULL; |
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134 char *bind_arg = NULL; |
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135 char c; |
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136 |
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137 /* see printhelp() for options */ |
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138 cli_opts.progname = argv[0]; |
39
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139 cli_opts.remotehost = NULL; |
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140 cli_opts.remoteport = NULL; |
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141 cli_opts.username = NULL; |
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|
142 cli_opts.cmd = NULL; |
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143 cli_opts.no_cmd = 0; |
326
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144 cli_opts.backgrounded = 0; |
47 | 145 cli_opts.wantpty = 9; /* 9 means "it hasn't been touched", gets set later */ |
418
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|
146 cli_opts.always_accept_key = 0; |
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|
147 cli_opts.no_hostkey_check = 0; |
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148 cli_opts.is_subsystem = 0; |
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149 #if DROPBEAR_CLI_PUBKEY_AUTH |
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|
150 cli_opts.privkeys = list_new(); |
47 | 151 #endif |
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152 #if DROPBEAR_CLI_ANYTCPFWD |
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153 cli_opts.exit_on_fwd_failure = 0; |
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154 #endif |
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|
155 #if DROPBEAR_CLI_LOCALTCPFWD |
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|
156 cli_opts.localfwds = list_new(); |
446
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changeset
|
157 opts.listen_fwd_all = 0; |
62 | 158 #endif |
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159 #if DROPBEAR_CLI_REMOTETCPFWD |
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changeset
|
160 cli_opts.remotefwds = list_new(); |
62 | 161 #endif |
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|
162 #if DROPBEAR_CLI_AGENTFWD |
225
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215
diff
changeset
|
163 cli_opts.agent_fwd = 0; |
674
1291413c7c7e
Initialise agent_fd to -1 so we don't end up closing stdin (fd 0)
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594
diff
changeset
|
164 cli_opts.agent_fd = -1; |
225
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215
diff
changeset
|
165 cli_opts.agent_keys_loaded = 0; |
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diff
changeset
|
166 #endif |
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|
167 #if DROPBEAR_CLI_PROXYCMD |
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changeset
|
168 cli_opts.proxycmd = NULL; |
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changeset
|
169 #endif |
1465
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cli_bind_address_connect
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1404
diff
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|
170 cli_opts.bind_address = NULL; |
1466
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|
171 cli_opts.bind_port = NULL; |
575
f9b5dc0cba61
- Disable compression for non-final multihops
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parents:
574
diff
changeset
|
172 #ifndef DISABLE_ZLIB |
996
47643024fc90
Disable non-delayed zlib for server
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diff
changeset
|
173 opts.compress_mode = DROPBEAR_COMPRESS_ON; |
575
f9b5dc0cba61
- Disable compression for non-final multihops
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574
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|
174 #endif |
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|
175 #if DROPBEAR_USER_ALGO_LIST |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
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changeset
|
176 opts.cipher_list = NULL; |
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Add rough support for choosing ciphers/hashes with "-c" or "-m"
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|
177 opts.mac_list = NULL; |
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changeset
|
178 #endif |
1210
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Moved usingsyslog from svr_runopts to runopts.
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1206
diff
changeset
|
179 #ifndef DISABLE_SYSLOG |
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Moved usingsyslog from svr_runopts to runopts.
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changeset
|
180 opts.usingsyslog = 0; |
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Moved usingsyslog from svr_runopts to runopts.
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diff
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|
181 #endif |
39
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|
182 /* not yet |
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|
183 opts.ipv4 = 1; |
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|
184 opts.ipv6 = 1; |
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|
185 */ |
449
3e6c536bc023
Add -W <windowsize> argument and document it.
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parents:
446
diff
changeset
|
186 opts.recv_window = DEFAULT_RECV_WINDOW; |
939
a0819ecfee0b
Make -K keepalive behave like OpenSSH's ServerAliveInterval
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|
187 opts.keepalive_secs = DEFAULT_KEEPALIVE; |
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Make -K keepalive behave like OpenSSH's ServerAliveInterval
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|
188 opts.idle_timeout_secs = DEFAULT_IDLE_TIMEOUT; |
39
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|
189 |
483
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- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
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changeset
|
190 fill_own_user(); |
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diff
changeset
|
191 |
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Fix flags after the hostname
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diff
changeset
|
192 for (i = 1; i < (unsigned int)argc; i++) { |
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changeset
|
193 /* Handle non-flag arguments such as hostname or commands for the remote host */ |
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|
194 if (argv[i][0] != '-') |
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Fix flags after the hostname
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changeset
|
195 { |
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changeset
|
196 if (host_arg == NULL) { |
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Fix flags after the hostname
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diff
changeset
|
197 host_arg = argv[i]; |
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changeset
|
198 continue; |
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|
199 } |
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|
200 /* Commands to pass to the remote host. No more flag handling, |
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|
201 commands are consumed below */ |
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|
202 break; |
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changeset
|
203 } |
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|
204 |
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|
205 /* Begins with '-' */ |
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|
206 opt = OPT_OTHER; |
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changeset
|
207 for (j = 1; (c = argv[i][j]) != '\0' && !next && opt == OPT_OTHER; j++) { |
1153
67d8a904f5a9
don't silently ignore extra flag arguments
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diff
changeset
|
208 switch (c) { |
418
ab57ba0cb667
Add '-y' option to dbclient to accept the host key without checking
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diff
changeset
|
209 case 'y': /* always accept the remote hostkey */ |
772
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diff
changeset
|
210 if (cli_opts.always_accept_key) { |
857 | 211 /* twice means no checking at all */ |
772
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-y -y to disable hostkey checking
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716
diff
changeset
|
212 cli_opts.no_hostkey_check = 1; |
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-y -y to disable hostkey checking
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diff
changeset
|
213 } |
418
ab57ba0cb667
Add '-y' option to dbclient to accept the host key without checking
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diff
changeset
|
214 cli_opts.always_accept_key = 1; |
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Add '-y' option to dbclient to accept the host key without checking
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diff
changeset
|
215 break; |
47 | 216 case 'p': /* remoteport */ |
1642 | 217 next = (char**)&cli_opts.remoteport; |
39
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|
218 break; |
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|
219 #if DROPBEAR_CLI_PUBKEY_AUTH |
47 | 220 case 'i': /* an identityfile */ |
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|
221 opt = OPT_AUTHKEY; |
39
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changeset
|
222 break; |
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changeset
|
223 #endif |
47 | 224 case 't': /* we want a pty */ |
225 cli_opts.wantpty = 1; | |
226 break; | |
227 case 'T': /* don't want a pty */ | |
228 cli_opts.wantpty = 0; | |
229 break; | |
325
0e4f225b7e07
Add -N "no remote command" dbclient option.
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258
diff
changeset
|
230 case 'N': |
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Add -N "no remote command" dbclient option.
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diff
changeset
|
231 cli_opts.no_cmd = 1; |
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Add -N "no remote command" dbclient option.
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258
diff
changeset
|
232 break; |
326
d965110e3f5c
add -f background option to dbclient
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diff
changeset
|
233 case 'f': |
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diff
changeset
|
234 cli_opts.backgrounded = 1; |
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add -f background option to dbclient
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diff
changeset
|
235 break; |
497
ae600f1eef81
- Enable -s for specifying a subsystem (such as sftp)
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changeset
|
236 case 's': |
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- Enable -s for specifying a subsystem (such as sftp)
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changeset
|
237 cli_opts.is_subsystem = 1; |
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- Enable -s for specifying a subsystem (such as sftp)
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changeset
|
238 break; |
1205
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Added OpenSSH-like -o command line option to dbclient.
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|
239 case 'o': |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
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|
240 opt = OPT_EXTENDED_OPTIONS; |
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Added OpenSSH-like -o command line option to dbclient.
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changeset
|
241 break; |
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Convert #ifdef to #if, other build changes
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changeset
|
242 #if DROPBEAR_CLI_LOCALTCPFWD |
64 | 243 case 'L': |
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changeset
|
244 opt = OPT_LOCALTCPFWD; |
64 | 245 break; |
258
306499676384
* add -g (dbclient) and -a (dropbear) options for allowing non-local
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215
diff
changeset
|
246 case 'g': |
306499676384
* add -g (dbclient) and -a (dropbear) options for allowing non-local
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215
diff
changeset
|
247 opts.listen_fwd_all = 1; |
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* add -g (dbclient) and -a (dropbear) options for allowing non-local
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diff
changeset
|
248 break; |
64 | 249 #endif |
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|
250 #if DROPBEAR_CLI_REMOTETCPFWD |
64 | 251 case 'R': |
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|
252 opt = OPT_REMOTETCPFWD; |
64 | 253 break; |
254 #endif | |
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diff
changeset
|
255 #if DROPBEAR_CLI_NETCAT |
485
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
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parents:
459
diff
changeset
|
256 case 'B': |
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changeset
|
257 opt = OPT_NETCAT; |
485
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
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459
diff
changeset
|
258 break; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
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459
diff
changeset
|
259 #endif |
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diff
changeset
|
260 #if DROPBEAR_CLI_PROXYCMD |
479
e3db1f7a2e43
- Split main socket var into ses.sock_in/ses.sock_out in preparation
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|
261 case 'J': |
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- Split main socket var into ses.sock_in/ses.sock_out in preparation
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|
262 next = &cli_opts.proxycmd; |
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- Split main socket var into ses.sock_in/ses.sock_out in preparation
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|
263 break; |
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|
264 #endif |
66
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265 case 'l': |
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|
266 next = &cli_opts.username; |
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267 break; |
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268 case 'h': |
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|
269 printhelp(); |
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270 exit(EXIT_SUCCESS); |
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271 break; |
442
d82a2a44c684
Add -u option to specify /dev/urandom instead
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|
272 case 'u': |
446
2cd2edfa11ee
Just use /dev/urandom since that's what everyone ends up using anyway.
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|
273 /* backwards compatibility with old urandom option */ |
442
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|
274 break; |
449
3e6c536bc023
Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
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diff
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|
275 case 'W': |
3e6c536bc023
Add -W <windowsize> argument and document it.
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diff
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|
276 next = &recv_window_arg; |
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Add -W <windowsize> argument and document it.
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|
277 break; |
454
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
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|
278 case 'K': |
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|
279 next = &keepalive_arg; |
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|
280 break; |
513
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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|
281 case 'I': |
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|
282 next = &idle_timeout_arg; |
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283 break; |
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284 #if DROPBEAR_CLI_AGENTFWD |
225
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285 case 'A': |
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|
286 cli_opts.agent_fwd = 1; |
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|
287 break; |
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|
288 #endif |
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289 #if DROPBEAR_USER_ALGO_LIST |
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290 case 'c': |
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|
291 next = &opts.cipher_list; |
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292 break; |
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293 case 'm': |
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|
294 next = &opts.mac_list; |
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|
295 break; |
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|
296 #endif |
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|
297 #if DEBUG_TRACE |
94
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|
298 case 'v': |
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|
299 debug_trace = 1; |
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|
300 break; |
c85c88500ea6
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diff
changeset
|
301 #endif |
66
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302 case 'F': |
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|
303 case 'e': |
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|
304 #if !DROPBEAR_USER_ALGO_LIST |
66
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|
305 case 'c': |
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|
306 case 'm': |
682
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|
307 #endif |
66
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|
308 case 'D': |
1499
2d450c1056e3
options: Complete the transition to numeric toggles (`#if')
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|
309 #if !DROPBEAR_CLI_REMOTETCPFWD |
66
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|
310 case 'R': |
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|
311 #endif |
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|
312 #if !DROPBEAR_CLI_LOCALTCPFWD |
66
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|
313 case 'L': |
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|
314 #endif |
946 | 315 case 'V': |
316 print_version(); | |
317 exit(EXIT_SUCCESS); | |
318 break; | |
66
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changeset
|
319 case 'b': |
1466
f787f60f8e45
bind to port as well with -b
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1465
diff
changeset
|
320 next = &bind_arg; |
1465
f7a53832501d
cli_bind_address_connect
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parents:
1404
diff
changeset
|
321 break; |
39
0883c0906870
tty raw mode support works mostly
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|
322 default: |
1170
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|
323 fprintf(stderr, |
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|
324 "WARNING: Ignoring unknown option -%c\n", c); |
39
0883c0906870
tty raw mode support works mostly
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diff
changeset
|
325 break; |
46
3bea78e1b175
Filled out a bit, with commandline support etc
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diff
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|
326 } /* Switch */ |
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|
327 } |
46
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|
328 |
1170
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|
329 if (!next && opt == OPT_OTHER) /* got a flag */ |
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|
330 continue; |
47 | 331 |
1170
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|
332 if (c == '\0') { |
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|
333 i++; |
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|
334 j = 0; |
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changeset
|
335 if (!argv[i]) |
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changeset
|
336 dropbear_exit("Missing argument"); |
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|
337 } |
46
3bea78e1b175
Filled out a bit, with commandline support etc
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40
diff
changeset
|
338 |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
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1171
diff
changeset
|
339 if (opt == OPT_EXTENDED_OPTIONS) { |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
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diff
changeset
|
340 TRACE(("opt extended")) |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
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1171
diff
changeset
|
341 add_extendedopt(&argv[i][j]); |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
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diff
changeset
|
342 } |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
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diff
changeset
|
343 else |
1295
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Convert #ifdef to #if, other build changes
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diff
changeset
|
344 #if DROPBEAR_CLI_PUBKEY_AUTH |
1170
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|
345 if (opt == OPT_AUTHKEY) { |
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changeset
|
346 TRACE(("opt authkey")) |
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diff
changeset
|
347 loadidentityfile(&argv[i][j], 1); |
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|
348 } |
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|
349 else |
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changeset
|
350 #endif |
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|
351 #if DROPBEAR_CLI_REMOTETCPFWD |
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|
352 if (opt == OPT_REMOTETCPFWD) { |
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|
353 TRACE(("opt remotetcpfwd")) |
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changeset
|
354 addforward(&argv[i][j], cli_opts.remotefwds); |
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|
355 } |
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|
356 else |
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|
357 #endif |
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|
358 #if DROPBEAR_CLI_LOCALTCPFWD |
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|
359 if (opt == OPT_LOCALTCPFWD) { |
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changeset
|
360 TRACE(("opt localtcpfwd")) |
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changeset
|
361 addforward(&argv[i][j], cli_opts.localfwds); |
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|
362 } |
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|
363 else |
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changeset
|
364 #endif |
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changeset
|
365 #if DROPBEAR_CLI_NETCAT |
1170
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|
366 if (opt == OPT_NETCAT) { |
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|
367 TRACE(("opt netcat")) |
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|
368 add_netcat(&argv[i][j]); |
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|
369 } |
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|
370 else |
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|
371 #endif |
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|
372 if (next) { |
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|
373 /* The previous flag set a value to assign */ |
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374 *next = &argv[i][j]; |
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|
375 if (*next == NULL) |
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|
376 dropbear_exit("Invalid null argument"); |
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|
377 next = NULL; |
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|
378 } |
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|
379 } |
46
3bea78e1b175
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diff
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|
380 |
1170
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|
381 /* Done with options/flags; now handle the hostname (which may not |
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|
382 * start with a hyphen) and optional command */ |
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|
383 |
1171
c745f720ae2e
Fix flags after the hostname
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1170
diff
changeset
|
384 if (host_arg == NULL) { /* missing hostname */ |
1170
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|
385 printhelp(); |
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386 exit(EXIT_FAILURE); |
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387 } |
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|
388 TRACE(("host is: %s", host_arg)) |
46
3bea78e1b175
Filled out a bit, with commandline support etc
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|
389 |
1170
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390 if (i < (unsigned int)argc) { |
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391 /* Build the command to send */ |
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|
392 cmdlen = 0; |
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|
393 for (j = i; j < (unsigned int)argc; j++) |
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|
394 cmdlen += strlen(argv[j]) + 1; /* +1 for spaces */ |
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|
395 |
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396 /* Allocate the space */ |
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|
397 cli_opts.cmd = (char*)m_malloc(cmdlen); |
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|
398 cli_opts.cmd[0] = '\0'; |
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|
399 |
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|
400 /* Append all the bits */ |
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401 for (j = i; j < (unsigned int)argc; j++) { |
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|
402 strlcat(cli_opts.cmd, argv[j], cmdlen); |
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|
403 strlcat(cli_opts.cmd, " ", cmdlen); |
39
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tty raw mode support works mostly
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|
404 } |
1170
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405 /* It'll be null-terminated here */ |
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|
406 TRACE(("cmd is: %s", cli_opts.cmd)) |
39
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tty raw mode support works mostly
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|
407 } |
47 | 408 |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
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409 /* And now a few sanity checks and setup */ |
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diff
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|
410 |
1295
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|
411 #if DROPBEAR_USER_ALGO_LIST |
682
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
Matt Johnston <matt@ucc.asn.au>
parents:
674
diff
changeset
|
412 parse_ciphers_macs(); |
4edea9f363d0
Add rough support for choosing ciphers/hashes with "-c" or "-m"
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parents:
674
diff
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|
413 #endif |
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|
414 |
1295
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changeset
|
415 #if DROPBEAR_CLI_PROXYCMD |
812
c936abfa9935
strdup the proxycmd to avoid crash when freeing, from LluÃs Batlle i Rossell
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parents:
784
diff
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|
416 if (cli_opts.proxycmd) { |
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strdup the proxycmd to avoid crash when freeing, from LluÃs Batlle i Rossell
Matt Johnston <matt@ucc.asn.au>
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diff
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417 /* To match the common path of m_freeing it */ |
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strdup the proxycmd to avoid crash when freeing, from LluÃs Batlle i Rossell
Matt Johnston <matt@ucc.asn.au>
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diff
changeset
|
418 cli_opts.proxycmd = m_strdup(cli_opts.proxycmd); |
c936abfa9935
strdup the proxycmd to avoid crash when freeing, from LluÃs Batlle i Rossell
Matt Johnston <matt@ucc.asn.au>
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diff
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|
419 } |
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Matt Johnston <matt@ucc.asn.au>
parents:
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diff
changeset
|
420 #endif |
c936abfa9935
strdup the proxycmd to avoid crash when freeing, from LluÃs Batlle i Rossell
Matt Johnston <matt@ucc.asn.au>
parents:
784
diff
changeset
|
421 |
47 | 422 if (cli_opts.remoteport == NULL) { |
423 cli_opts.remoteport = "22"; | |
424 } | |
425 | |
1466
f787f60f8e45
bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
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diff
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|
426 if (bind_arg) { |
f787f60f8e45
bind to port as well with -b
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diff
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|
427 /* split [host][:port] */ |
f787f60f8e45
bind to port as well with -b
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diff
changeset
|
428 char *port = strrchr(bind_arg, ':'); |
f787f60f8e45
bind to port as well with -b
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diff
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|
429 if (port) { |
f787f60f8e45
bind to port as well with -b
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parents:
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diff
changeset
|
430 cli_opts.bind_port = m_strdup(port+1); |
f787f60f8e45
bind to port as well with -b
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diff
changeset
|
431 *port = '\0'; |
f787f60f8e45
bind to port as well with -b
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diff
changeset
|
432 } |
f787f60f8e45
bind to port as well with -b
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diff
changeset
|
433 if (strlen(bind_arg) > 0) { |
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bind to port as well with -b
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diff
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|
434 cli_opts.bind_address = m_strdup(bind_arg); |
f787f60f8e45
bind to port as well with -b
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diff
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|
435 } |
f787f60f8e45
bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents:
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diff
changeset
|
436 } |
f787f60f8e45
bind to port as well with -b
Matt Johnston <matt@ucc.asn.au>
parents:
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diff
changeset
|
437 |
47 | 438 /* If not explicitly specified with -t or -T, we don't want a pty if |
439 * there's a command, but we do otherwise */ | |
440 if (cli_opts.wantpty == 9) { | |
441 if (cli_opts.cmd == NULL) { | |
442 cli_opts.wantpty = 1; | |
443 } else { | |
444 cli_opts.wantpty = 0; | |
445 } | |
446 } | |
326
d965110e3f5c
add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents:
325
diff
changeset
|
447 |
d965110e3f5c
add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
parents:
325
diff
changeset
|
448 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
|
449 && cli_opts.no_cmd == 0) { |
594
a98a2138364a
Improve capitalisation for all logged strings
Matt Johnston <matt@ucc.asn.au>
parents:
580
diff
changeset
|
450 dropbear_exit("Command required for -f"); |
326
d965110e3f5c
add -f background option to dbclient
Matt Johnston <matt@ucc.asn.au>
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325
diff
changeset
|
451 } |
449
3e6c536bc023
Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents:
446
diff
changeset
|
452 |
483
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
453 if (recv_window_arg) { |
449
3e6c536bc023
Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents:
446
diff
changeset
|
454 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
|
455 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
|
456 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
|
457 } |
3e6c536bc023
Add -W <windowsize> argument and document it.
Matt Johnston <matt@ucc.asn.au>
parents:
446
diff
changeset
|
458 } |
454
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents:
449
diff
changeset
|
459 if (keepalive_arg) { |
568
005530560594
Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents:
551
diff
changeset
|
460 unsigned int val; |
005530560594
Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents:
551
diff
changeset
|
461 if (m_str_to_uint(keepalive_arg, &val) == DROPBEAR_FAILURE) { |
454
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents:
449
diff
changeset
|
462 dropbear_exit("Bad keepalive '%s'", keepalive_arg); |
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents:
449
diff
changeset
|
463 } |
568
005530560594
Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents:
551
diff
changeset
|
464 opts.keepalive_secs = val; |
454
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents:
449
diff
changeset
|
465 } |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
466 |
513
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
Matt Johnston <matt@ucc.asn.au>
parents:
509
diff
changeset
|
467 if (idle_timeout_arg) { |
568
005530560594
Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents:
551
diff
changeset
|
468 unsigned int val; |
005530560594
Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents:
551
diff
changeset
|
469 if (m_str_to_uint(idle_timeout_arg, &val) == DROPBEAR_FAILURE) { |
513
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
Matt Johnston <matt@ucc.asn.au>
parents:
509
diff
changeset
|
470 dropbear_exit("Bad idle_timeout '%s'", idle_timeout_arg); |
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
Matt Johnston <matt@ucc.asn.au>
parents:
509
diff
changeset
|
471 } |
568
005530560594
Rearrange getaddrstring() etc
Matt Johnston <matt@ucc.asn.au>
parents:
551
diff
changeset
|
472 opts.idle_timeout_secs = val; |
513
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
Matt Johnston <matt@ucc.asn.au>
parents:
509
diff
changeset
|
473 } |
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
Matt Johnston <matt@ucc.asn.au>
parents:
509
diff
changeset
|
474 |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1276
diff
changeset
|
475 #if DROPBEAR_CLI_NETCAT |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
476 if (cli_opts.cmd && cli_opts.netcat_host) { |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
477 dropbear_log(LOG_INFO, "Ignoring command '%s' in netcat mode", cli_opts.cmd); |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
478 } |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
479 #endif |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
480 |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1276
diff
changeset
|
481 #if (DROPBEAR_CLI_PUBKEY_AUTH) |
995
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
482 { |
1134
36557295418e
change DROPBEAR_DEFAULT_CLI_AUTHKEY to just prepend homedir
Matt Johnston <matt@ucc.asn.au>
parents:
1085
diff
changeset
|
483 char *expand_path = expand_homedir_path(DROPBEAR_DEFAULT_CLI_AUTHKEY); |
995
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
484 loadidentityfile(expand_path, 0); |
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
485 m_free(expand_path); |
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
486 } |
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
487 #endif |
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
488 |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
489 /* The hostname gets set up last, since |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
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541
diff
changeset
|
490 * in multi-hop mode it will require knowledge |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
491 * of other flags such as -i */ |
1295
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Convert #ifdef to #if, other build changes
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1276
diff
changeset
|
492 #if DROPBEAR_CLI_MULTIHOP |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
493 parse_multihop_hostname(host_arg, argv[0]); |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
494 #else |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
495 parse_hostname(host_arg); |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
496 #endif |
39
0883c0906870
tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
497 } |
47 | 498 |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
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parents:
1276
diff
changeset
|
499 #if DROPBEAR_CLI_PUBKEY_AUTH |
995
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
500 static void loadidentityfile(const char* filename, int warnfail) { |
47 | 501 sign_key *key; |
852
7540c0822374
Various cleanups and fixes for warnings
Matt Johnston <matt@ucc.asn.au>
parents:
812
diff
changeset
|
502 enum signkey_type keytype; |
47 | 503 |
995
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
504 TRACE(("loadidentityfile %s", filename)) |
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
505 |
47 | 506 key = new_sign_key(); |
507 keytype = DROPBEAR_SIGNKEY_ANY; | |
508 if ( readhostkey(filename, key, &keytype) != DROPBEAR_SUCCESS ) { | |
995
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
509 if (warnfail) { |
1213
7fd1211a1f63
Use dropbear_log instead of some fprintf's in client code.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1212
diff
changeset
|
510 dropbear_log(LOG_WARNING, "Failed loading keyfile '%s'\n", filename); |
995
6fb4c010c448
Default client key path ~/.ssh/id_dropbear
Matt Johnston <matt@ucc.asn.au>
parents:
961
diff
changeset
|
511 } |
47 | 512 sign_key_free(key); |
513 } else { | |
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 key->type = keytype; |
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
515 key->source = SIGNKEY_SOURCE_RAW_FILE; |
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
516 key->filename = m_strdup(filename); |
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
517 list_append(cli_opts.privkeys, key); |
47 | 518 } |
519 } | |
520 #endif | |
521 | |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1276
diff
changeset
|
522 #if DROPBEAR_CLI_MULTIHOP |
487
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523 |
544
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|
524 static char* |
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|
525 multihop_passthrough_args() { |
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526 char *ret; |
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527 int total; |
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|
528 unsigned int len = 0; |
551
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|
529 m_list_elem *iter; |
772
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530 /* Fill out -i, -y, -W options that make sense for all |
544
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|
531 * the intermediate processes */ |
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532 #if DROPBEAR_CLI_PUBKEY_AUTH |
551
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|
533 for (iter = cli_opts.privkeys->first; iter; iter = iter->next) |
544
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534 { |
551
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|
535 sign_key * key = (sign_key*)iter->item; |
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|
536 len += 3 + strlen(key->filename); |
544
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|
537 } |
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|
538 #endif /* DROPBEAR_CLI_PUBKEY_AUTH */ |
1085
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Fix building when ENABLE_CLI_PUBKEY_AUTH is unset
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parents:
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|
539 |
857 | 540 len += 30; /* space for -W <size>, terminator. */ |
544
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|
541 ret = m_malloc(len); |
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|
542 total = 0; |
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|
543 |
772
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544 if (cli_opts.no_hostkey_check) |
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|
545 { |
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546 int written = snprintf(ret+total, len-total, "-y -y "); |
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547 total += written; |
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|
548 } |
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|
549 else if (cli_opts.always_accept_key) |
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|
550 { |
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551 int written = snprintf(ret+total, len-total, "-y "); |
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552 total += written; |
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|
553 } |
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|
554 |
544
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|
555 if (opts.recv_window != DEFAULT_RECV_WINDOW) |
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|
556 { |
1237
888e3d17e962
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|
557 int written = snprintf(ret+total, len-total, "-W %u ", opts.recv_window); |
544
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558 total += written; |
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|
559 } |
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|
560 |
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|
561 #if DROPBEAR_CLI_PUBKEY_AUTH |
551
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|
562 for (iter = cli_opts.privkeys->first; iter; iter = iter->next) |
544
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|
563 { |
551
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|
564 sign_key * key = (sign_key*)iter->item; |
544
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|
565 const size_t size = len - total; |
772
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|
566 int written = snprintf(ret+total, size, "-i %s ", key->filename); |
568
005530560594
Rearrange getaddrstring() etc
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parents:
551
diff
changeset
|
567 dropbear_assert((unsigned int)written < size); |
544
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|
568 total += written; |
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|
569 } |
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|
570 #endif /* DROPBEAR_CLI_PUBKEY_AUTH */ |
544
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|
571 |
776
f7c8b786e595
changelog updates for 2013.57
Matt Johnston <matt@ucc.asn.au>
parents:
772
diff
changeset
|
572 /* if args were passed, total will be not zero, and it will have a space at the end, so remove that */ |
772
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diff
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|
573 if (total > 0) |
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parents:
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diff
changeset
|
574 { |
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parents:
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diff
changeset
|
575 total--; |
7fc0aeada79c
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parents:
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diff
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|
576 } |
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diff
changeset
|
577 |
544
9e51707cd6f2
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parents:
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diff
changeset
|
578 return ret; |
9e51707cd6f2
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parents:
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diff
changeset
|
579 } |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
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diff
changeset
|
580 |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
581 /* Sets up 'onion-forwarding' connections. This will spawn |
79c657a673ec
- Allow specifying a port with host/port.
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parents:
487
diff
changeset
|
582 * a separate dbclient process for each hop. |
487
2e17f82a7330
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parents:
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diff
changeset
|
583 * As an example, if the cmdline is |
2e17f82a7330
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diff
changeset
|
584 * dbclient wrt,madako,canyons |
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diff
changeset
|
585 * then we want to run: |
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diff
changeset
|
586 * dbclient -J "dbclient -B canyons:22 wrt,madako" canyons |
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|
587 * and then the inner dbclient will recursively run: |
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|
588 * dbclient -J "dbclient -B madako:22 wrt" madako |
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|
589 * etc for as many hosts as we want. |
489
79c657a673ec
- Allow specifying a port with host/port.
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parents:
487
diff
changeset
|
590 * |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
591 * Ports for hosts can be specified as host/port. |
487
2e17f82a7330
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parents:
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diff
changeset
|
592 */ |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
593 static void parse_multihop_hostname(const char* orighostarg, const char* argv0) { |
487
2e17f82a7330
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diff
changeset
|
594 char *userhostarg = NULL; |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
595 char *hostbuf = NULL; |
574
b6665c1eac43
Remove extraneous semicolon
Matt Johnston <matt@ucc.asn.au>
parents:
568
diff
changeset
|
596 char *last_hop = NULL; |
487
2e17f82a7330
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diff
changeset
|
597 char *remainder = NULL; |
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diff
changeset
|
598 |
494
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
Matt Johnston <matt@ucc.asn.au>
parents:
492
diff
changeset
|
599 /* 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
|
600 * 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
|
601 * 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
|
602 * This will break usernames that have both '@' and ',' in them, |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
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parents:
492
diff
changeset
|
603 * though that should be fairly uncommon. */ |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
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parents:
492
diff
changeset
|
604 if (cli_opts.username |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
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parents:
492
diff
changeset
|
605 && strchr(cli_opts.username, ',') |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
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parents:
492
diff
changeset
|
606 && strchr(cli_opts.username, '@')) { |
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
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parents:
492
diff
changeset
|
607 unsigned int len = strlen(orighostarg) + strlen(cli_opts.username) + 2; |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
608 hostbuf = m_malloc(len); |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
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parents:
541
diff
changeset
|
609 snprintf(hostbuf, len, "%s@%s", cli_opts.username, orighostarg); |
494
66eac4631d88
- Work around rsync and scp parsing and modifying the user@host argument,
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parents:
492
diff
changeset
|
610 } else { |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
611 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
|
612 } |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
613 userhostarg = hostbuf; |
487
2e17f82a7330
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parents:
486
diff
changeset
|
614 |
2e17f82a7330
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parents:
486
diff
changeset
|
615 last_hop = strrchr(userhostarg, ','); |
2e17f82a7330
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diff
changeset
|
616 if (last_hop) { |
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486
diff
changeset
|
617 if (last_hop == userhostarg) { |
2e17f82a7330
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diff
changeset
|
618 dropbear_exit("Bad multi-hop hostnames"); |
2e17f82a7330
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486
diff
changeset
|
619 } |
2e17f82a7330
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diff
changeset
|
620 *last_hop = '\0'; |
2e17f82a7330
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diff
changeset
|
621 last_hop++; |
2e17f82a7330
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486
diff
changeset
|
622 remainder = userhostarg; |
2e17f82a7330
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diff
changeset
|
623 userhostarg = last_hop; |
2e17f82a7330
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diff
changeset
|
624 } |
2e17f82a7330
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parents:
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diff
changeset
|
625 |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
626 parse_hostname(userhostarg); |
487
2e17f82a7330
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parents:
486
diff
changeset
|
627 |
2e17f82a7330
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diff
changeset
|
628 if (last_hop) { |
2e17f82a7330
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parents:
486
diff
changeset
|
629 /* Set up the proxycmd */ |
2e17f82a7330
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parents:
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diff
changeset
|
630 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
|
631 char *passthrough_args = multihop_passthrough_args(); |
487
2e17f82a7330
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parents:
486
diff
changeset
|
632 if (cli_opts.proxycmd) { |
2e17f82a7330
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486
diff
changeset
|
633 dropbear_exit("-J can't be used with multihop mode"); |
2e17f82a7330
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diff
changeset
|
634 } |
2e17f82a7330
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parents:
486
diff
changeset
|
635 if (cli_opts.remoteport == NULL) { |
2e17f82a7330
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parents:
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diff
changeset
|
636 cli_opts.remoteport = "22"; |
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
637 } |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
638 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
|
639 + 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
|
640 + strlen(passthrough_args) |
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
641 + 30; |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
642 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
|
643 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
|
644 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
|
645 passthrough_args, remainder); |
575
f9b5dc0cba61
- Disable compression for non-final multihops
Matt Johnston <matt@ucc.asn.au>
parents:
574
diff
changeset
|
646 #ifndef DISABLE_ZLIB |
f9b5dc0cba61
- Disable compression for non-final multihops
Matt Johnston <matt@ucc.asn.au>
parents:
574
diff
changeset
|
647 /* The stream will be incompressible since it's encrypted. */ |
996
47643024fc90
Disable non-delayed zlib for server
Matt Johnston <matt@ucc.asn.au>
parents:
995
diff
changeset
|
648 opts.compress_mode = DROPBEAR_COMPRESS_OFF; |
575
f9b5dc0cba61
- Disable compression for non-final multihops
Matt Johnston <matt@ucc.asn.au>
parents:
574
diff
changeset
|
649 #endif |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
650 m_free(passthrough_args); |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
651 } |
544
9e51707cd6f2
- Make -i and -W pass through multihop arguments
Matt Johnston <matt@ucc.asn.au>
parents:
541
diff
changeset
|
652 m_free(hostbuf); |
487
2e17f82a7330
Add multihop 'onion-forwarding' mode. Needs refinement, works.
Matt Johnston <matt@ucc.asn.au>
parents:
486
diff
changeset
|
653 } |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1276
diff
changeset
|
654 #endif /* !DROPBEAR_CLI_MULTIHOP */ |
47 | 655 |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
656 /* Parses a [user@]hostname[/port] argument. */ |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
657 static void parse_hostname(const char* orighostarg) { |
64 | 658 char *userhostarg = NULL; |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
659 char *port = NULL; |
64 | 660 |
661 userhostarg = m_strdup(orighostarg); | |
47 | 662 |
663 cli_opts.remotehost = strchr(userhostarg, '@'); | |
664 if (cli_opts.remotehost == NULL) { | |
665 /* no username portion, the cli-auth.c code can figure the | |
666 * local user's name */ | |
667 cli_opts.remotehost = userhostarg; | |
668 } else { | |
669 cli_opts.remotehost[0] = '\0'; /* Split the user/host */ | |
670 cli_opts.remotehost++; | |
671 cli_opts.username = userhostarg; | |
672 } | |
673 | |
674 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
|
675 cli_opts.username = m_strdup(cli_opts.own_user); |
47 | 676 } |
677 | |
895
5608a5a61c2a
Change port separator to ^ since % is used in ipv6 addresses
Matt Johnston <matt@ucc.asn.au>
parents:
857
diff
changeset
|
678 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
|
679 if (!port) { |
857 | 680 /* legacy separator */ |
783
34e69908b3f7
Use '#' for host#port separator, document it. This fixes scp
Matt Johnston <matt@ucc.asn.au>
parents:
776
diff
changeset
|
681 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
|
682 } |
489
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
683 if (port) { |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
684 *port = '\0'; |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
685 cli_opts.remoteport = port+1; |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
686 } |
79c657a673ec
- Allow specifying a port with host/port.
Matt Johnston <matt@ucc.asn.au>
parents:
487
diff
changeset
|
687 |
47 | 688 if (cli_opts.remotehost[0] == '\0') { |
689 dropbear_exit("Bad hostname"); | |
690 } | |
691 } | |
64 | 692 |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1276
diff
changeset
|
693 #if DROPBEAR_CLI_NETCAT |
485
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
694 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
|
695 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
|
696 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
697 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
|
698 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
699 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
|
700 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
|
701 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
|
702 goto fail; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
703 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
704 *portstr = '\0'; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
705 portstr++; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
706 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
707 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
|
708 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
|
709 goto fail; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
710 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
711 |
492
b956d6151600
Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents:
489
diff
changeset
|
712 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
|
713 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
|
714 goto fail; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
715 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
716 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
717 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
|
718 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
|
719 goto fail; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
720 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
721 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
722 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
|
723 return; |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
724 |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
725 fail: |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
726 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
|
727 } |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
728 #endif |
12d845ab7b5f
Rework netcat-alike to be a proper mode, with -B argument.
Matt Johnston <matt@ucc.asn.au>
parents:
459
diff
changeset
|
729 |
483
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
730 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
|
731 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
|
732 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
|
733 |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
734 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
|
735 |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
736 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
|
737 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
|
738 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
|
739 } else { |
958
1bf92da7a2a0
Try without identifying current user
iquaba <cooka2011@gmail.com>
parents:
946
diff
changeset
|
740 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
|
741 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
|
742 } |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
743 |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
744 } |
738313e73b1c
- "-J 'nc localhost 22'" kind of works, needs fixing hostkeys, ptys etc.
Matt Johnston <matt@ucc.asn.au>
parents:
479
diff
changeset
|
745 |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1276
diff
changeset
|
746 #if DROPBEAR_CLI_ANYTCPFWD |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
747 /* Turn a "[listenaddr:]listenport:remoteaddr:remoteport" string into into a forwarding |
64 | 748 * 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
|
749 static void addforward(const char* origstr, m_list *fwdlist) { |
64 | 750 |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
751 char *part1 = NULL, *part2 = NULL, *part3 = NULL, *part4 = NULL; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
752 char * listenaddr = NULL; |
64 | 753 char * listenport = NULL; |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
754 char * connectaddr = NULL; |
64 | 755 char * connectport = NULL; |
551
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
756 struct TCPFwdEntry* newfwd = NULL; |
64 | 757 char * str = NULL; |
758 | |
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
|
759 TRACE(("enter addforward")) |
64 | 760 |
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
|
761 /* 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
|
762 is never free()d. */ |
64 | 763 str = m_strdup(origstr); |
764 | |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
765 part1 = str; |
64 | 766 |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
767 part2 = strchr(str, ':'); |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
768 if (part2 == NULL) { |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
769 TRACE(("part2 == NULL")) |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
770 goto fail; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
771 } |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
772 *part2 = '\0'; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
773 part2++; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
774 |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
775 part3 = strchr(part2, ':'); |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
776 if (part3 == NULL) { |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
777 TRACE(("part3 == NULL")) |
64 | 778 goto fail; |
779 } | |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
780 *part3 = '\0'; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
781 part3++; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
782 |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
783 part4 = strchr(part3, ':'); |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
784 if (part4) { |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
785 *part4 = '\0'; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
786 part4++; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
787 } |
64 | 788 |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
789 if (part4) { |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
790 listenaddr = part1; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
791 listenport = part2; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
792 connectaddr = part3; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
793 connectport = part4; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
794 } else { |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
795 listenaddr = NULL; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
796 listenport = part1; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
797 connectaddr = part2; |
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
798 connectport = part3; |
64 | 799 } |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
800 |
551
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
801 newfwd = m_malloc(sizeof(struct TCPFwdEntry)); |
64 | 802 |
803 /* Now we check the ports - note that the port ints are unsigned, | |
804 * 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
|
805 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
|
806 TRACE(("bad listenport strtoul")) |
64 | 807 goto fail; |
808 } | |
809 | |
492
b956d6151600
Replace calls to strtoul() with a helper m_str_to_uint()
Matt Johnston <matt@ucc.asn.au>
parents:
489
diff
changeset
|
810 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
|
811 TRACE(("bad connectport strtoul")) |
64 | 812 goto fail; |
813 } | |
814 | |
578
44f486b72427
- tcpfwd bindaddr support against trunk. needs merging.
Matt Johnston <matt@ucc.asn.au>
parents:
575
diff
changeset
|
815 newfwd->listenaddr = listenaddr; |
64 | 816 newfwd->connectaddr = connectaddr; |
817 | |
818 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
|
819 TRACE(("listenport > 65535")) |
64 | 820 goto badport; |
821 } | |
822 | |
823 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
|
824 TRACE(("connectport > 65535")) |
64 | 825 goto badport; |
826 } | |
827 | |
505
805e557fdff7
Report errors if a remote request fails
Matt Johnston <matt@ucc.asn.au>
parents:
497
diff
changeset
|
828 newfwd->have_reply = 0; |
551
c3f2ec71e3d4
New standard linked list to use, rather than adhoc SignKeyList or TCPFwdList
Matt Johnston <matt@ucc.asn.au>
parents:
546
diff
changeset
|
829 list_append(fwdlist, newfwd); |
64 | 830 |
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
|
831 TRACE(("leave addforward: done")) |
64 | 832 return; |
833 | |
834 fail: | |
835 dropbear_exit("Bad TCP forward '%s'", origstr); | |
836 | |
837 badport: | |
838 dropbear_exit("Bad TCP port in '%s'", origstr); | |
839 } | |
840 #endif | |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
841 |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
842 static int match_extendedopt(const char** strptr, const char *optname) { |
1220
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
843 int seen_eq = 0; |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
844 int optlen = strlen(optname); |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
845 const char *str = *strptr; |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
846 |
1220
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
847 while (isspace(*str)) { |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
848 ++str; |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
849 } |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
850 |
1215 | 851 if (strncasecmp(str, optname, optlen) != 0) { |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
852 return DROPBEAR_FAILURE; |
1215 | 853 } |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
854 |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
855 str += optlen; |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
856 |
1220
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
857 while (isspace(*str) || (!seen_eq && *str == '=')) { |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
858 if (*str == '=') { |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
859 seen_eq = 1; |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
860 } |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
861 ++str; |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
862 } |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
863 |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
864 if (str-*strptr == optlen) { |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
865 /* matched just a prefix of optname */ |
1218
b73c078e11e9
Don't allow spaces and don't get confused by -o usesyslogd=yes
Matt Johnston <matt@ucc.asn.au>
parents:
1217
diff
changeset
|
866 return DROPBEAR_FAILURE; |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
867 } |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
868 |
1220
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
869 *strptr = str; |
de2e39e94c68
revert removal of space handling, different fix for avoiding option prefix
Matt Johnston <matt@ucc.asn.au>
parents:
1218
diff
changeset
|
870 return DROPBEAR_SUCCESS; |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
871 } |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
872 |
1215 | 873 static int parse_flag_value(const char *value) { |
874 if (strcmp(value, "yes") == 0 || strcmp(value, "true") == 0) { | |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
875 return 1; |
1215 | 876 } else if (strcmp(value, "no") == 0 || strcmp(value, "false") == 0) { |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
877 return 0; |
1215 | 878 } |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
879 |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
880 dropbear_exit("Bad yes/no argument '%s'", value); |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
881 } |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
882 |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
883 static void add_extendedopt(const char* origstr) { |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
884 const char *optstr = origstr; |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
885 |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
886 if (strcmp(origstr, "help") == 0) { |
1206
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
887 dropbear_log(LOG_INFO, "Available options:\n" |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1276
diff
changeset
|
888 #if DROPBEAR_CLI_ANYTCPFWD |
1206
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
889 "\tExitOnForwardFailure\n" |
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
890 #endif |
1212
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
891 #ifndef DISABLE_SYSLOG |
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
892 "\tUseSyslog\n" |
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
893 #endif |
1637
cf8dc6204fb6
support openssh long option -o Port=XXXX (#68)
xcko <24556661+xcko@users.noreply.github.com>
parents:
1499
diff
changeset
|
894 "\tPort\n" |
1206
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
895 ); |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
896 exit(EXIT_SUCCESS); |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
897 } |
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
898 |
1295
750ec4ec4cbe
Convert #ifdef to #if, other build changes
Matt Johnston <matt@ucc.asn.au>
parents:
1276
diff
changeset
|
899 #if DROPBEAR_CLI_ANYTCPFWD |
1206
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
900 if (match_extendedopt(&optstr, "ExitOnForwardFailure") == DROPBEAR_SUCCESS) { |
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
901 cli_opts.exit_on_fwd_failure = parse_flag_value(optstr); |
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
902 return; |
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
903 } |
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
904 #endif |
2907c658fa76
Implemented ExitOnForwardFailure option for local and remote forwarding.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1205
diff
changeset
|
905 |
1212
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
906 #ifndef DISABLE_SYSLOG |
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
907 if (match_extendedopt(&optstr, "UseSyslog") == DROPBEAR_SUCCESS) { |
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
908 opts.usingsyslog = parse_flag_value(optstr); |
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
909 return; |
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
910 } |
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
911 #endif |
bf626d259eb1
Support syslog logging in dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1210
diff
changeset
|
912 |
1637
cf8dc6204fb6
support openssh long option -o Port=XXXX (#68)
xcko <24556661+xcko@users.noreply.github.com>
parents:
1499
diff
changeset
|
913 if (match_extendedopt(&optstr, "Port") == DROPBEAR_SUCCESS) { |
cf8dc6204fb6
support openssh long option -o Port=XXXX (#68)
xcko <24556661+xcko@users.noreply.github.com>
parents:
1499
diff
changeset
|
914 cli_opts.remoteport = optstr; |
cf8dc6204fb6
support openssh long option -o Port=XXXX (#68)
xcko <24556661+xcko@users.noreply.github.com>
parents:
1499
diff
changeset
|
915 return; |
cf8dc6204fb6
support openssh long option -o Port=XXXX (#68)
xcko <24556661+xcko@users.noreply.github.com>
parents:
1499
diff
changeset
|
916 } |
cf8dc6204fb6
support openssh long option -o Port=XXXX (#68)
xcko <24556661+xcko@users.noreply.github.com>
parents:
1499
diff
changeset
|
917 |
1217
980b7ea2c5ef
unknown options should be non-fatal
Matt Johnston <matt@ucc.asn.au>
parents:
1215
diff
changeset
|
918 dropbear_log(LOG_WARNING, "Ignoring unknown configuration option '%s'", origstr); |
1205
978887222d29
Added OpenSSH-like -o command line option to dbclient.
Konstantin Tokarev <ktokarev@smartlabs.tv>
parents:
1171
diff
changeset
|
919 } |