Mercurial > dropbear

annotate cli-runopts.c @ 791:0bf76f54de6f

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Limit decompressed size
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 May 2013 23:23:14 +0800
parents 0e5ea6812bb7
children c936abfa9935
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1 /*
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2 * Dropbear - a SSH2 server
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3 *
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4 * Copyright (c) 2002,2003 Matt Johnston
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5 * All rights reserved.
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6 *
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 * of this software and associated documentation files (the "Software"), to deal
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9 * in the Software without restriction, including without limitation the rights
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 * copies of the Software, and to permit persons to whom the Software is
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12 * furnished to do so, subject to the following conditions:
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13 *
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14 * The above copyright notice and this permission notice shall be included in
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15 * all copies or substantial portions of the Software.
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16 *
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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23 * SOFTWARE. */
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24
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25 #include "includes.h"
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26 #include "runopts.h"
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27 #include "signkey.h"
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28 #include "buffer.h"
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29 #include "dbutil.h"
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30 #include "algo.h"
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31 #include "tcpfwd.h"
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32 #include "list.h"
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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();
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37 static void parse_hostname(const char* orighostarg);
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38 static void parse_multihop_hostname(const char* orighostarg, const char* argv0);
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39 static void fill_own_user();
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40 #ifdef ENABLE_CLI_PUBKEY_AUTH
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41 static void loadidentityfile(const char* filename);
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42 #endif
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43 #ifdef ENABLE_CLI_ANYTCPFWD
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44 static void addforward(const char* str, m_list *fwdlist);
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45 #endif
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46 #ifdef ENABLE_CLI_NETCAT
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47 static void add_netcat(const char *str);
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48 #endif
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49
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50 static void printhelp() {
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51
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52 fprintf(stderr, "Dropbear SSH client v%s https://matt.ucc.asn.au/dropbear/dropbear.html\n"
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53 #ifdef ENABLE_CLI_MULTIHOP
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54 "Usage: %s [options] [user@]host[/port][,[user@]host/port],...] [command]\n"
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55 #else
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56 "Usage: %s [options] [user@]host[/port] [command]\n"
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57 #endif
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58 "-p <remoteport>\n"
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59 "-l <username>\n"
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60 "-t Allocate a pty\n"
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61 "-T Don't allocate a pty\n"
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62 "-N Don't run a remote command\n"
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63 "-f Run in background after auth\n"
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64 "-y Always accept remote host key if unknown\n"
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65 "-y -y Don't perform any remote host key checking (caution)\n"
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66 "-s Request a subsystem (use by external sftp)\n"
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67 #ifdef ENABLE_CLI_PUBKEY_AUTH
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68 "-i <identityfile> (multiple allowed)\n"
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69 #endif
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70 #ifdef ENABLE_CLI_AGENTFWD
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71 "-A Enable agent auth forwarding\n"
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72 #endif
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73 #ifdef ENABLE_CLI_LOCALTCPFWD
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74 "-L <[listenaddress:]listenport:remotehost:remoteport> Local port forwarding\n"
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75 "-g Allow remote hosts to connect to forwarded ports\n"
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76 #endif
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77 #ifdef ENABLE_CLI_REMOTETCPFWD
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78 "-R <[listenaddress:]listenport:remotehost:remoteport> Remote port forwarding\n"
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79 #endif
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80 "-W <receive_window_buffer> (default %d, larger may be faster, max 1MB)\n"
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81 "-K <keepalive> (0 is never, default %d)\n"
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82 "-I <idle_timeout> (0 is never, default %d)\n"
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83 #ifdef ENABLE_CLI_NETCAT
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84 "-B <endhost:endport> Netcat-alike forwarding\n"
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85 #endif
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86 #ifdef ENABLE_CLI_PROXYCMD
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87 "-J <proxy_program> Use program pipe rather than TCP connection\n"
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88 #endif
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89 #ifdef ENABLE_USER_ALGO_LIST
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90 "-c <cipher list> Specify preferred ciphers ('-c help' to list options)\n"
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91 "-m <MAC list> Specify preferred MACs for packet verification (or '-m help')\n"
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92 #endif
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93 #ifdef DEBUG_TRACE
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94 "-v verbose (compiled with DEBUG_TRACE)\n"
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95 #endif
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96 ,DROPBEAR_VERSION, cli_opts.progname,
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97 DEFAULT_RECV_WINDOW, DEFAULT_KEEPALIVE, DEFAULT_IDLE_TIMEOUT);
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98
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99 }
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100
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101 void cli_getopts(int argc, char ** argv) {
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102 unsigned int i, j;
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103 char ** next = 0;
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104 unsigned int cmdlen;
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105 #ifdef ENABLE_CLI_PUBKEY_AUTH
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106 int nextiskey = 0; /* A flag if the next argument is a keyfile */
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107 #endif
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108 #ifdef ENABLE_CLI_LOCALTCPFWD
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109 int nextislocal = 0;
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110 #endif
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111 #ifdef ENABLE_CLI_REMOTETCPFWD
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112 int nextisremote = 0;
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113 #endif
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114 #ifdef ENABLE_CLI_NETCAT
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115 int nextisnetcat = 0;
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116 #endif
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117 char* dummy = NULL; /* Not used for anything real */
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118
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119 char* recv_window_arg = NULL;
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120 char* keepalive_arg = NULL;
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121 char* idle_timeout_arg = NULL;
544
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122 char *host_arg = NULL;
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123
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124 /* see printhelp() for options */
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125 cli_opts.progname = argv[0];
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126 cli_opts.remotehost = NULL;
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127 cli_opts.remoteport = NULL;
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128 cli_opts.username = NULL;
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129 cli_opts.cmd = NULL;
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130 cli_opts.no_cmd = 0;
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131 cli_opts.backgrounded = 0;
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132 cli_opts.wantpty = 9; /* 9 means "it hasn't been touched", gets set later */
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133 cli_opts.always_accept_key = 0;
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134 cli_opts.no_hostkey_check = 0;
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135 cli_opts.is_subsystem = 0;
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136 #ifdef ENABLE_CLI_PUBKEY_AUTH
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137 cli_opts.privkeys = list_new();
47
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138 #endif
64
efb5e0b335cf TCP forwarding works.
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139 #ifdef ENABLE_CLI_LOCALTCPFWD
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140 cli_opts.localfwds = list_new();
446
2cd2edfa11ee Just use /dev/urandom since that's what everyone ends up using anyway.
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141 opts.listen_fwd_all = 0;
62
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142 #endif
64
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143 #ifdef ENABLE_CLI_REMOTETCPFWD
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144 cli_opts.remotefwds = list_new();
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145 #endif
225
ca7e76d981d9 - progress towards client agent forwarding
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146 #ifdef ENABLE_CLI_AGENTFWD
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147 cli_opts.agent_fwd = 0;
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1291413c7c7e Initialise agent_fd to -1 so we don't end up closing stdin (fd 0)
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148 cli_opts.agent_fd = -1;
225
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149 cli_opts.agent_keys_loaded = 0;
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diff changeset
150 #endif
483
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151 #ifdef ENABLE_CLI_PROXYCMD
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152 cli_opts.proxycmd = NULL;
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153 #endif
575
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154 #ifndef DISABLE_ZLIB
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155 opts.enable_compress = 1;