annotate cli-runopts.c @ 66:38c3146aa23d

Some more sanity-checking of args, and just warn and ignore OpenSSH args
author Matt Johnston <matt@ucc.asn.au>
date Thu, 12 Aug 2004 14:19:05 +0000
parents efb5e0b335cf
children eee77ac31ccc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Dropbear - a SSH2 server
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3 *
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4 * Copyright (c) 2002,2003 Matt Johnston
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5 * All rights reserved.
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6 *
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 * of this software and associated documentation files (the "Software"), to deal
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9 * in the Software without restriction, including without limitation the rights
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 * copies of the Software, and to permit persons to whom the Software is
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12 * furnished to do so, subject to the following conditions:
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13 *
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14 * The above copyright notice and this permission notice shall be included in
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15 * all copies or substantial portions of the Software.
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16 *
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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23 * SOFTWARE. */
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24
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25 #include "includes.h"
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26 #include "runopts.h"
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27 #include "signkey.h"
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28 #include "buffer.h"
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29 #include "dbutil.h"
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30 #include "algo.h"
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31 #include "tcpfwd.h"
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32
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33 cli_runopts cli_opts; /* GLOBAL */
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34
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35 static void printhelp();
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36 static void parsehostname(char* userhostarg);
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37 #ifdef DROPBEAR_PUBKEY_AUTH
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38 static void loadidentityfile(const char* filename);
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39 #endif
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40 #ifdef ENABLE_CLI_ANYTCPFWD
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41 static void addforward(char* str, struct TCPFwdList** fwdlist);
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42 #endif
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43
47
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44 static void printhelp() {
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45
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46 fprintf(stderr, "Dropbear client v%s\n"
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47 "Usage: %s [options] [[email protected]]host\n"
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48 "Options are:\n"
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49 "-p <remoteport>\n"
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50 "-t Allocate a pty\n"
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51 "-T Don't allocate a pty\n"
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52 #ifdef DROPBEAR_PUBKEY_AUTH
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53 "-i <identityfile> (multiple allowed)\n"
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54 #endif
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55 #ifdef ENABLE_CLI_LOCALTCPFWD
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56 "-L <listenport:remotehsot:reportport> Local port forwarding\n"
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57 #endif
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58 #ifdef ENABLE_CLI_REMOTETCPFWD
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59 "-R <listenport:remotehost:remoteport> Remote port forwarding\n"
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60 #endif
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61 "-l <username>\n"
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62 ,DROPBEAR_VERSION, cli_opts.progname);
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63 }
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64
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65 void cli_getopts(int argc, char ** argv) {
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66
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67 unsigned int i, j;
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68 char ** next = 0;
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69 unsigned int cmdlen;
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70 #ifdef DROPBEAR_PUBKEY_AUTH
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71 int nextiskey = 0; /* A flag if the next argument is a keyfile */
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72 #endif
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73 #ifdef ENABLE_CLI_LOCALTCPFWD
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74 int nextislocal = 0;
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75 #endif
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76 #ifdef ENABLE_CLI_REMOTETCPFWD
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77 int nextisremote = 0;
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78 #endif
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79 char* dummy = NULL; /* Not used for anything real */
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80
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81 /* see printhelp() for options */
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82 cli_opts.progname = argv[0];
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83 cli_opts.remotehost = NULL;
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84 cli_opts.remoteport = NULL;
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85 cli_opts.username = NULL;
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86 cli_opts.cmd = NULL;
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87 cli_opts.wantpty = 9; /* 9 means "it hasn't been touched", gets set later */
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88 #ifdef DROPBEAR_PUBKEY_AUTH
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89 cli_opts.pubkeys = NULL;
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90 #endif
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91 #ifdef ENABLE_CLI_LOCALTCPFWD
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92 cli_opts.localfwds = NULL;
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93 #endif
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94 #ifdef ENABLE_CLI_REMOTETCPFWD
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95 cli_opts.remotefwds = NULL;
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96 #endif
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97 opts.nolocaltcp = 0;
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98 opts.noremotetcp = 0;
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99 /* not yet
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100 opts.ipv4 = 1;
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101 opts.ipv6 = 1;
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102 */
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103
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104 /* Iterate all the arguments */
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105 for (i = 1; i < (unsigned int)argc; i++) {
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106 #ifdef DROPBEAR_PUBKEY_AUTH
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107 if (nextiskey) {
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108 /* Load a hostkey since the previous argument was "-i" */
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109 loadidentityfile(argv[i]);
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110 nextiskey = 0;
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111 continue;
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112 }
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113 #endif
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114 #ifdef ENABLE_CLI_REMOTETCPFWD
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115 if (nextisremote) {
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116 TRACE(("nextisremote true"));
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117 addforward(argv[i], &cli_opts.remotefwds);
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118 nextisremote = 0;
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119 continue;
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120 }
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121 #endif
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122 #ifdef ENABLE_CLI_LOCALTCPFWD
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123 if (nextislocal) {
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124 TRACE(("nextislocal true"));
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125 addforward(argv[i], &cli_opts.localfwds);
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126 nextislocal = 0;
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127 continue;
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128 }
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129 #endif
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130 if (next) {
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131 /* The previous flag set a value to assign */
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132 *next = argv[i];
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133 if (*next == NULL) {
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134 dropbear_exit("Invalid null argument");
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135 }
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136 next = NULL;
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137 continue;
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138 }
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139
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140 if (argv[i][0] == '-') {
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141 /* A flag *waves* */
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142
66
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143 if (strlen(argv[i]) > 2) {
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144 fprintf(stderr,
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145 "WARNING: Ignoring unknown argument '%s'\n", argv[i]);
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146 continue;
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147 }
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148
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149 switch (argv[i][1]) {
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150 case 'p': /* remoteport */
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151 next = &cli_opts.remoteport;
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152 break;
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parents: 40
diff changeset
153 #ifdef DROPBEAR_PUBKEY_AUTH
47
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
154 case 'i': /* an identityfile */
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
155 nextiskey = 1;
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
156 break;
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
157 #endif
47
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
158 case 't': /* we want a pty */
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
159 cli_opts.wantpty = 1;
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Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
160 break;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
161 case 'T': /* don't want a pty */
4b53a43f0082 - client pubkey auth works
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parents: 46
diff changeset
162 cli_opts.wantpty = 0;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
163 break;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
164 #ifdef ENABLE_CLI_LOCALTCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
165 case 'L':
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
166 nextislocal = 1;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
167 break;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
168 #endif
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
169 #ifdef ENABLE_CLI_REMOTETCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
170 case 'R':
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
171 nextisremote = 1;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
172 break;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
173 #endif
66
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
174 case 'l':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
175 next = &cli_opts.username;
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
176 break;
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
177 case 'h':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
178 printhelp();
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
179 exit(EXIT_SUCCESS);
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
180 break;
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
181 case 'F':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
182 case 'e':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
183 case 'c':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
184 case 'm':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
185 case 'D':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
186 #ifndef ENABLE_CLI_REMOTETCPFWD
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
187 case 'R':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
188 #endif
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
189 #ifndef ENABLE_CLI_LOCALTCPFWD
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
190 case 'L':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
191 #endif
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
192 case 'o':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
193 case 'b':
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
194 next = &dummy;
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195 default:
66
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
196 fprintf(stderr,
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
197 "WARNING: Ignoring unknown argument '%s'\n", argv[i]);
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198 break;
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
199 } /* Switch */
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
200
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
201 continue; /* next argument */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
202
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
203 } else {
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
204 TRACE(("non-flag arg: '%s'", argv[i]));
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
205
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
206 /* Either the hostname or commands */
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
207
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
208 if (cli_opts.remotehost == NULL) {
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
209
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
210 parsehostname(argv[i]);
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
211
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
212 } else {
46
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
213
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
214 /* this is part of the commands to send - after this we
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
215 * don't parse any more options, and flags are sent as the
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
216 * command */
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
217 cmdlen = 0;
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
218 for (j = i; j < (unsigned int)argc; j++) {
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
219 cmdlen += strlen(argv[j]) + 1; /* +1 for spaces */
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
220 }
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
221 /* Allocate the space */
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
222 cli_opts.cmd = (char*)m_malloc(cmdlen);
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
223 cli_opts.cmd[0] = '\0';
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
224
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
225 /* Append all the bits */
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
226 for (j = i; j < (unsigned int)argc; j++) {
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
227 strlcat(cli_opts.cmd, argv[j], cmdlen);
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
228 strlcat(cli_opts.cmd, " ", cmdlen);
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
229 }
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
230 /* It'll be null-terminated here */
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
231
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
232 /* We've eaten all the options and flags */
3bea78e1b175 Filled out a bit, with commandline support etc
Matt Johnston <matt@ucc.asn.au>
parents: 40
diff changeset
233 break;
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 }
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 }
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 }
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
237
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
238 if (cli_opts.remotehost == NULL) {
66
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
239 printhelp();
38c3146aa23d Some more sanity-checking of args, and just warn and ignore OpenSSH args
Matt Johnston <matt@ucc.asn.au>
parents: 64
diff changeset
240 exit(EXIT_FAILURE);
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
241 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
242
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
243 if (cli_opts.remoteport == NULL) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
244 cli_opts.remoteport = "22";
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
245 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
246
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
247 /* If not explicitly specified with -t or -T, we don't want a pty if
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
248 * there's a command, but we do otherwise */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
249 if (cli_opts.wantpty == 9) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
250 if (cli_opts.cmd == NULL) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
251 cli_opts.wantpty = 1;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
252 } else {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
253 cli_opts.wantpty = 0;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
254 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
255 }
39
0883c0906870 tty raw mode support works mostly
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
256 }
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
257
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
258 #ifdef DROPBEAR_PUBKEY_AUTH
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
259 static void loadidentityfile(const char* filename) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
260
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
261 struct PubkeyList * nextkey;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
262 sign_key *key;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
263 int keytype;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
264
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
265 key = new_sign_key();
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
266 keytype = DROPBEAR_SIGNKEY_ANY;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
267 if ( readhostkey(filename, key, &keytype) != DROPBEAR_SUCCESS ) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
268
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
269 fprintf(stderr, "Failed loading keyfile '%s'\n", filename);
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
270 sign_key_free(key);
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
271
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
272 } else {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
273
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
274 nextkey = (struct PubkeyList*)m_malloc(sizeof(struct PubkeyList));
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
275 nextkey->key = key;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
276 nextkey->next = cli_opts.pubkeys;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
277 nextkey->type = keytype;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
278 cli_opts.pubkeys = nextkey;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
279 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
280 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
281 #endif
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
282
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
283
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
284 /* Parses a [[email protected]]hostname argument. userhostarg is the argv[i] corresponding
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
285 * - note that it will be modified */
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
286 static void parsehostname(char* orighostarg) {
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
287
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
288 uid_t uid;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
289 struct passwd *pw = NULL;
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
290 char *userhostarg = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
291
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
292 /* We probably don't want to be editing argvs */
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
293 userhostarg = m_strdup(orighostarg);
47
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
294
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
295 cli_opts.remotehost = strchr(userhostarg, '@');
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
296 if (cli_opts.remotehost == NULL) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
297 /* no username portion, the cli-auth.c code can figure the
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
298 * local user's name */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
299 cli_opts.remotehost = userhostarg;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
300 } else {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
301 cli_opts.remotehost[0] = '\0'; /* Split the user/host */
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
302 cli_opts.remotehost++;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
303 cli_opts.username = userhostarg;
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
304 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
305
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
306 if (cli_opts.username == NULL) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
307 uid = getuid();
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
308
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
309 pw = getpwuid(uid);
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
310 if (pw == NULL || pw->pw_name == NULL) {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
311 dropbear_exit("Unknown own user");
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
312 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
313
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
314 cli_opts.username = m_strdup(pw->pw_name);
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
315 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
316
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
317 if (cli_opts.remotehost[0] == '\0') {
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
318 dropbear_exit("Bad hostname");
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
319 }
4b53a43f0082 - client pubkey auth works
Matt Johnston <matt@ucc.asn.au>
parents: 46
diff changeset
320 }
64
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
321
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
322 #ifdef ENABLE_CLI_ANYTCPFWD
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
323 /* Turn a "listenport:remoteaddr:remoteport" string into into a forwarding
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
324 * set, and add it to the forwarding list */
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
325 static void addforward(char* origstr, struct TCPFwdList** fwdlist) {
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
326
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
327 char * listenport = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
328 char * connectport = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
329 char * connectaddr = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
330 struct TCPFwdList* newfwd = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
331 char * str = NULL;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
332
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
333 TRACE(("enter addforward"));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
334
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
335 /* We probably don't want to be editing argvs */
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
336 str = m_strdup(origstr);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
337
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
338 listenport = str;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
339
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
340 connectaddr = strchr(str, ':');
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
341 if (connectaddr == NULL) {
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
342 TRACE(("connectaddr == NULL"));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
343 goto fail;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
344 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
345
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
346 connectaddr[0] = '\0';
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
347 connectaddr++;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
348
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
349 connectport = strchr(connectaddr, ':');
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
350 if (connectport == NULL) {
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
351 TRACE(("connectport == NULL"));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
352 goto fail;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
353 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
354
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
355 connectport[0] = '\0';
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
356 connectport++;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
357
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
358 newfwd = (struct TCPFwdList*)m_malloc(sizeof(struct TCPFwdList));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
359
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
360 /* Now we check the ports - note that the port ints are unsigned,
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
361 * the check later only checks for >= MAX_PORT */
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
362 newfwd->listenport = strtol(listenport, NULL, 10);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
363 if (errno != 0) {
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
364 TRACE(("bad listenport strtol"));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
365 goto fail;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
366 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
367
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
368 newfwd->connectport = strtol(connectport, NULL, 10);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
369 if (errno != 0) {
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
370 TRACE(("bad connectport strtol"));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
371 goto fail;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
372 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
373
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
374 newfwd->connectaddr = connectaddr;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
375
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
376 if (newfwd->listenport > 65535) {
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
377 TRACE(("listenport > 65535"));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
378 goto badport;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
379 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
380
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
381 if (newfwd->connectport > 65535) {
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
382 TRACE(("connectport > 65535"));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
383 goto badport;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
384 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
385
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
386 newfwd->next = *fwdlist;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
387 *fwdlist = newfwd;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
388
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
389 TRACE(("leave addforward: done"));
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
390 return;
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
391
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
392 fail:
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
393 dropbear_exit("Bad TCP forward '%s'", origstr);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
394
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
395 badport:
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
396 dropbear_exit("Bad TCP port in '%s'", origstr);
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
397 }
efb5e0b335cf TCP forwarding works.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
398 #endif