Mercurial > dropbear
annotate svr-runopts.c @ 1290:ee2ffa044c7e
Add manpage and log for forced_command
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 12 Apr 2016 21:05:40 +0800 |
parents | a23386821e9f |
children | 750ec4ec4cbe |
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" |
795 | 31 #include "ecdsa.h" |
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32 |
24 | 33 svr_runopts svr_opts; /* GLOBAL */ |
34 | |
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35 static void printhelp(const char * progname); |
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36 static void addportandaddress(const char* spec); |
795 | 37 static void loadhostkey(const char *keyfile, int fatal_duplicate); |
38 static void addhostkey(const char *keyfile); | |
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39 |
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40 static void printhelp(const char * progname) { |
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41 |
716 | 42 fprintf(stderr, "Dropbear server v%s https://matt.ucc.asn.au/dropbear/dropbear.html\n" |
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43 "Usage: %s [options]\n" |
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44 "-b bannerfile Display the contents of bannerfile" |
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45 " before user login\n" |
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46 " (default: none)\n" |
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47 "-r keyfile Specify hostkeys (repeatable)\n" |
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48 " defaults: \n" |
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49 #ifdef DROPBEAR_DSS |
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50 " dss %s\n" |
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51 #endif |
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52 #ifdef DROPBEAR_RSA |
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53 " rsa %s\n" |
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54 #endif |
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55 #ifdef DROPBEAR_ECDSA |
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56 " ecdsa %s\n" |
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57 #endif |
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58 #ifdef DROPBEAR_DELAY_HOSTKEY |
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59 "-R Create hostkeys as required\n" |
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60 #endif |
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61 "-F Don't fork into background\n" |
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62 #ifdef DISABLE_SYSLOG |
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63 "(Syslog support not compiled in, using stderr)\n" |
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64 #else |
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65 "-E Log to stderr rather than syslog\n" |
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66 #endif |
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67 #ifdef DO_MOTD |
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68 "-m Don't display the motd on login\n" |
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69 #endif |
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70 "-w Disallow root logins\n" |
121 | 71 #if defined(ENABLE_SVR_PASSWORD_AUTH) || defined(ENABLE_SVR_PAM_AUTH) |
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72 "-s Disable password logins\n" |
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73 "-g Disable password logins for root\n" |
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74 "-B Allow blank password logins\n" |
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75 #endif |
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76 #ifdef ENABLE_SVR_LOCALTCPFWD |
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77 "-j Disable local port forwarding\n" |
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78 #endif |
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79 #ifdef ENABLE_SVR_REMOTETCPFWD |
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80 "-k Disable remote port forwarding\n" |
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81 "-a Allow connections to forwarded ports from any host\n" |
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82 "-c command Force executed command\n" |
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83 #endif |
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84 "-p [address:]port\n" |
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85 " Listen on specified tcp port (and optionally address),\n" |
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86 " up to %d can be specified\n" |
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87 " (default port is %s if none specified)\n" |
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88 "-P PidFile Create pid file PidFile\n" |
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89 " (default %s)\n" |
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90 #ifdef INETD_MODE |
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91 "-i Start for inetd\n" |
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92 #endif |
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93 "-W <receive_window_buffer> (default %d, larger may be faster, max 1MB)\n" |
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94 "-K <keepalive> (0 is never, default %d, in seconds)\n" |
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95 "-I <idle_timeout> (0 is never, default %d, in seconds)\n" |
946 | 96 "-V Version\n" |
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97 #ifdef 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, progname, |
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101 #ifdef DROPBEAR_DSS |
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102 DSS_PRIV_FILENAME, |
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103 #endif |
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104 #ifdef DROPBEAR_RSA |
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105 RSA_PRIV_FILENAME, |
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106 #endif |
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107 #ifdef DROPBEAR_ECDSA |
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108 ECDSA_PRIV_FILENAME, |
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109 #endif |
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110 DROPBEAR_MAX_PORTS, DROPBEAR_DEFPORT, DROPBEAR_PIDFILE, |
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111 DEFAULT_RECV_WINDOW, DEFAULT_KEEPALIVE, DEFAULT_IDLE_TIMEOUT); |
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112 } |
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113 |
24 | 114 void svr_getopts(int argc, char ** argv) { |
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115 |
1164 | 116 unsigned int i, j; |
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117 char ** next = 0; |
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118 int nextisport = 0; |
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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; |
795 | 122 char* keyfile = NULL; |
1164 | 123 char c; |
795 | 124 |
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125 |
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126 /* see printhelp() for options */ |
24 | 127 svr_opts.bannerfile = NULL; |
128 svr_opts.banner = NULL; | |
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129 svr_opts.forced_command = NULL; |
24 | 130 svr_opts.forkbg = 1; |
131 svr_opts.norootlogin = 0; | |
132 svr_opts.noauthpass = 0; | |
133 svr_opts.norootpass = 0; | |
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134 svr_opts.allowblankpass = 0; |
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135 svr_opts.inetdmode = 0; |
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136 svr_opts.portcount = 0; |
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137 svr_opts.hostkey = NULL; |
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138 svr_opts.delay_hostkey = 0; |
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139 svr_opts.pidfile = DROPBEAR_PIDFILE; |
271
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140 #ifdef ENABLE_SVR_LOCALTCPFWD |
258
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141 svr_opts.nolocaltcp = 0; |
271
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142 #endif |
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143 #ifdef ENABLE_SVR_REMOTETCPFWD |
258
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144 svr_opts.noremotetcp = 0; |
271
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145 #endif |
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146 |
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147 #ifndef DISABLE_ZLIB |
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148 #if DROPBEAR_SERVER_DELAY_ZLIB |
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149 opts.compress_mode = DROPBEAR_COMPRESS_DELAYED; |
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150 #else |
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151 opts.compress_mode = DROPBEAR_COMPRESS_ON; |
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152 #endif |
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153 #endif |
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154 |
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155 /* not yet |
33 | 156 opts.ipv4 = 1; |
157 opts.ipv6 = 1; | |
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158 */ |
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159 #ifdef DO_MOTD |
24 | 160 svr_opts.domotd = 1; |
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161 #endif |
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162 #ifndef DISABLE_SYSLOG |
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163 opts.usingsyslog = 1; |
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164 #endif |
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165 opts.recv_window = DEFAULT_RECV_WINDOW; |
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166 opts.keepalive_secs = DEFAULT_KEEPALIVE; |
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167 opts.idle_timeout_secs = DEFAULT_IDLE_TIMEOUT; |
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168 |
258
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169 #ifdef ENABLE_SVR_REMOTETCPFWD |
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170 opts.listen_fwd_all = 0; |
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171 #endif |
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172 |
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173 for (i = 1; i < (unsigned int)argc; i++) { |
1164 | 174 if (argv[i][0] != '-' || argv[i][1] == '\0') |
175 dropbear_exit("Invalid argument: %s", argv[i]); | |
795 | 176 |
1164 | 177 for (j = 1; (c = argv[i][j]) != '\0' && !next && !nextisport; j++) { |
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178 switch (c) { |
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179 case 'b': |
24 | 180 next = &svr_opts.bannerfile; |
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181 break; |
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182 case 'c': |
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183 next = &svr_opts.forced_command; |
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184 break; |
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185 case 'd': |
795 | 186 case 'r': |
187 next = &keyfile; | |
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188 break; |
847
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189 case 'R': |
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190 svr_opts.delay_hostkey = 1; |
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191 break; |
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192 case 'F': |
24 | 193 svr_opts.forkbg = 0; |
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194 break; |
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195 #ifndef DISABLE_SYSLOG |
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196 case 'E': |
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197 opts.usingsyslog = 0; |
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198 break; |
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199 #endif |
271
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200 #ifdef ENABLE_SVR_LOCALTCPFWD |
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201 case 'j': |
258
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202 svr_opts.nolocaltcp = 1; |
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203 break; |
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204 #endif |
271
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205 #ifdef ENABLE_SVR_REMOTETCPFWD |
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206 case 'k': |
258
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207 svr_opts.noremotetcp = 1; |
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208 break; |
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209 case 'a': |
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210 opts.listen_fwd_all = 1; |
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211 break; |
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212 #endif |
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213 #ifdef INETD_MODE |
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214 case 'i': |
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215 svr_opts.inetdmode = 1; |
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216 break; |
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217 #endif |
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218 case 'p': |
434
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219 nextisport = 1; |
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220 break; |
323
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221 case 'P': |
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222 next = &svr_opts.pidfile; |
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223 break; |
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224 #ifdef DO_MOTD |
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225 /* motd is displayed by default, -m turns it off */ |
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226 case 'm': |
24 | 227 svr_opts.domotd = 0; |
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228 break; |
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229 #endif |
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230 case 'w': |
24 | 231 svr_opts.norootlogin = 1; |
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232 break; |
449
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233 case 'W': |
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234 next = &recv_window_arg; |
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235 break; |
454
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236 case 'K': |
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237 next = &keepalive_arg; |
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238 break; |
513
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239 case 'I': |
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240 next = &idle_timeout_arg; |
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241 break; |
121 | 242 #if defined(ENABLE_SVR_PASSWORD_AUTH) || defined(ENABLE_SVR_PAM_AUTH) |
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243 case 's': |
24 | 244 svr_opts.noauthpass = 1; |
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245 break; |
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246 case 'g': |
24 | 247 svr_opts.norootpass = 1; |
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248 break; |
692
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249 case 'B': |
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250 svr_opts.allowblankpass = 1; |
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251 break; |
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252 #endif |
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253 case 'h': |
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254 printhelp(argv[0]); |
946 | 255 exit(EXIT_SUCCESS); |
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256 break; |
442
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257 case 'u': |
446
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258 /* backwards compatibility with old urandom option */ |
442
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259 break; |
94
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260 #ifdef DEBUG_TRACE |
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261 case 'v': |
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262 debug_trace = 1; |
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263 break; |
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264 #endif |
946 | 265 case 'V': |
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266 print_version(); |
946 | 267 exit(EXIT_SUCCESS); |
268 break; | |
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269 default: |
1164 | 270 fprintf(stderr, "Invalid option -%c\n", c); |
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271 printhelp(argv[0]); |
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272 exit(EXIT_FAILURE); |
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273 break; |
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274 } |
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275 } |
1164 | 276 |
277 if (!next && !nextisport) | |
278 continue; | |
279 | |
280 if (c == '\0') { | |
281 i++; | |
282 j = 0; | |
283 if (!argv[i]) { | |
284 dropbear_exit("Missing argument"); | |
285 } | |
286 } | |
287 | |
288 if (nextisport) { | |
289 addportandaddress(&argv[i][j]); | |
290 nextisport = 0; | |
291 } else if (next) { | |
292 *next = &argv[i][j]; | |
293 if (*next == NULL) { | |
294 dropbear_exit("Invalid null argument"); | |
295 } | |
296 next = 0x00; | |
297 | |
298 if (keyfile) { | |
299 addhostkey(keyfile); | |
300 keyfile = NULL; | |
301 } | |
302 } | |
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|
303 } |
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304 |
101
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|
305 /* Set up listening ports */ |
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|
306 if (svr_opts.portcount == 0) { |
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|
307 svr_opts.ports[0] = m_strdup(DROPBEAR_DEFPORT); |
434
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|
308 svr_opts.addresses[0] = m_strdup(DROPBEAR_DEFADDRESS); |
101
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|
309 svr_opts.portcount = 1; |
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310 } |
513
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|
311 |
24 | 312 if (svr_opts.bannerfile) { |
4
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|
313 struct stat buf; |
24 | 314 if (stat(svr_opts.bannerfile, &buf) != 0) { |
4
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|
315 dropbear_exit("Error opening banner file '%s'", |
24 | 316 svr_opts.bannerfile); |
4
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|
317 } |
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318 |
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319 if (buf.st_size > MAX_BANNER_SIZE) { |
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320 dropbear_exit("Banner file too large, max is %d bytes", |
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|
321 MAX_BANNER_SIZE); |
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|
322 } |
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|
323 |
24 | 324 svr_opts.banner = buf_new(buf.st_size); |
325 if (buf_readfile(svr_opts.banner, svr_opts.bannerfile)!=DROPBEAR_SUCCESS) { | |
4
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326 dropbear_exit("Error reading banner file '%s'", |
24 | 327 svr_opts.bannerfile); |
4
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328 } |
24 | 329 buf_setpos(svr_opts.banner, 0); |
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330 } |
449
3e6c536bc023
Add -W <windowsize> argument and document it.
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|
331 |
454
7e43f5e473b9
- Add -K keepalive flag for dropbear and dbclient
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|
332 if (recv_window_arg) { |
449
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Add -W <windowsize> argument and document it.
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diff
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|
333 opts.recv_window = atol(recv_window_arg); |
492
b956d6151600
Replace calls to strtoul() with a helper m_str_to_uint()
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changeset
|
334 if (opts.recv_window == 0 || opts.recv_window > MAX_RECV_WINDOW) { |
449
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|
335 dropbear_exit("Bad recv window '%s'", recv_window_arg); |
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|
336 } |
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|
337 } |
454
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|
338 |
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|
339 if (keepalive_arg) { |
568
005530560594
Rearrange getaddrstring() etc
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changeset
|
340 unsigned int val; |
005530560594
Rearrange getaddrstring() etc
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341 if (m_str_to_uint(keepalive_arg, &val) == DROPBEAR_FAILURE) { |
454
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- Add -K keepalive flag for dropbear and dbclient
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|
342 dropbear_exit("Bad keepalive '%s'", keepalive_arg); |
7e43f5e473b9
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|
343 } |
568
005530560594
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|
344 opts.keepalive_secs = val; |
454
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- Add -K keepalive flag for dropbear and dbclient
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|
345 } |
513
a3748e54273c
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346 |
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changeset
|
347 if (idle_timeout_arg) { |
568
005530560594
Rearrange getaddrstring() etc
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diff
changeset
|
348 unsigned int val; |
005530560594
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changeset
|
349 if (m_str_to_uint(idle_timeout_arg, &val) == DROPBEAR_FAILURE) { |
513
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|
350 dropbear_exit("Bad idle_timeout '%s'", idle_timeout_arg); |
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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|
351 } |
568
005530560594
Rearrange getaddrstring() etc
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diff
changeset
|
352 opts.idle_timeout_secs = val; |
513
a3748e54273c
Idle timeout patch from Farrell Aultman. Needs testing, unsure if server
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510
diff
changeset
|
353 } |
1290
ee2ffa044c7e
Add manpage and log for forced_command
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1289
diff
changeset
|
354 |
ee2ffa044c7e
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1289
diff
changeset
|
355 if (svr_opts.forced_command) { |
ee2ffa044c7e
Add manpage and log for forced_command
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diff
changeset
|
356 dropbear_log(LOG_INFO, "Forced command set to '%s'", svr_opts.forced_command); |
ee2ffa044c7e
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|
357 } |
4
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|
358 } |
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|
359 |
1197
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|
360 static void addportandaddress(const char* spec) { |
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|
361 char *spec_copy = NULL, *myspec = NULL, *port = NULL, *address = NULL; |
434
0aaaf68e97dc
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|
362 |
0aaaf68e97dc
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changeset
|
363 if (svr_opts.portcount < DROPBEAR_MAX_PORTS) { |
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diff
changeset
|
364 |
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diff
changeset
|
365 /* We don't free it, it becomes part of the runopt state */ |
1197
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|
366 spec_copy = m_strdup(spec); |
86a9e0204c03
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changeset
|
367 myspec = spec_copy; |
434
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diff
changeset
|
368 |
706
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
369 if (myspec[0] == '[') { |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
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parents:
692
diff
changeset
|
370 myspec++; |
1197
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parents:
1177
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changeset
|
371 port = strchr(myspec, ']'); |
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
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1177
diff
changeset
|
372 if (!port) { |
706
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
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parents:
692
diff
changeset
|
373 /* Unmatched [ -> exit */ |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
374 dropbear_exit("Bad listen address"); |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
375 } |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
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parents:
1177
diff
changeset
|
376 port[0] = '\0'; |
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
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parents:
1177
diff
changeset
|
377 port++; |
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
378 if (port[0] != ':') { |
706
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
379 /* Missing port -> exit */ |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
380 dropbear_exit("Missing port"); |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
381 } |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
382 } else { |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
383 /* search for ':', that separates address and port */ |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
384 port = strrchr(myspec, ':'); |
706
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
385 } |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
386 |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
387 if (!port) { |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
388 /* no ':' -> the whole string specifies just a port */ |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
389 port = myspec; |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
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parents:
271
diff
changeset
|
390 } else { |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
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parents:
271
diff
changeset
|
391 /* Split the address/port */ |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
392 port[0] = '\0'; |
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
393 port++; |
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
394 address = myspec; |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
395 } |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
396 |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
397 if (!address) { |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
398 /* no address given -> fill in the default address */ |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
399 address = DROPBEAR_DEFADDRESS; |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
400 } |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
401 |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
402 if (port[0] == '\0') { |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
403 /* empty port -> exit */ |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
404 dropbear_exit("Bad port"); |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
405 } |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
406 svr_opts.ports[svr_opts.portcount] = m_strdup(port); |
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
407 svr_opts.addresses[svr_opts.portcount] = m_strdup(address); |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
408 svr_opts.portcount++; |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
409 m_free(spec_copy); |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
410 } |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
411 } |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
412 |
795 | 413 static void disablekey(int type) { |
4
fe6bca95afa7
Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
414 int i; |
802 | 415 TRACE(("Disabling key type %d", type)) |
47 | 416 for (i = 0; sshhostkey[i].name != NULL; i++) { |
417 if (sshhostkey[i].val == type) { | |
802 | 418 sshhostkey[i].usable = 0; |
47 | 419 break; |
420 } | |
4
fe6bca95afa7
Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
421 } |
fe6bca95afa7
Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
422 } |
fe6bca95afa7
Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
423 |
807
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
424 static void loadhostkey_helper(const char *name, void** src, void** dst, int fatal_duplicate) { |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
425 if (*dst) { |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
426 if (fatal_duplicate) { |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
427 dropbear_exit("Only one %s key can be specified", name); |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
428 } |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
429 } else { |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
430 *dst = *src; |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
431 *src = NULL; |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
432 } |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
433 |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
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434 } |
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435 |
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436 /* Must be called after syslog/etc is working */ |
795 | 437 static void loadhostkey(const char *keyfile, int fatal_duplicate) { |
438 sign_key * read_key = new_sign_key(); | |
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439 enum signkey_type type = DROPBEAR_SIGNKEY_ANY; |
795 | 440 if (readhostkey(keyfile, read_key, &type) == DROPBEAR_FAILURE) { |
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441 if (!svr_opts.delay_hostkey) { |
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442 dropbear_log(LOG_WARNING, "Failed loading %s", keyfile); |
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443 } |
795 | 444 } |
445 | |
446 #ifdef DROPBEAR_RSA | |
447 if (type == DROPBEAR_SIGNKEY_RSA) { | |
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448 loadhostkey_helper("RSA", (void**)&read_key->rsakey, (void**)&svr_opts.hostkey->rsakey, fatal_duplicate); |
795 | 449 } |
450 #endif | |
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451 |
795 | 452 #ifdef DROPBEAR_DSS |
453 if (type == DROPBEAR_SIGNKEY_DSS) { | |
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454 loadhostkey_helper("DSS", (void**)&read_key->dsskey, (void**)&svr_opts.hostkey->dsskey, fatal_duplicate); |
795 | 455 } |
456 #endif | |
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457 |
795 | 458 #ifdef DROPBEAR_ECDSA |
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459 #ifdef DROPBEAR_ECC_256 |
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460 if (type == DROPBEAR_SIGNKEY_ECDSA_NISTP256) { |
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461 loadhostkey_helper("ECDSA256", (void**)&read_key->ecckey256, (void**)&svr_opts.hostkey->ecckey256, fatal_duplicate); |
795 | 462 } |
463 #endif | |
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464 #ifdef DROPBEAR_ECC_384 |
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465 if (type == DROPBEAR_SIGNKEY_ECDSA_NISTP384) { |
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466 loadhostkey_helper("ECDSA384", (void**)&read_key->ecckey384, (void**)&svr_opts.hostkey->ecckey384, fatal_duplicate); |
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467 } |
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468 #endif |
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469 #ifdef DROPBEAR_ECC_521 |
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470 if (type == DROPBEAR_SIGNKEY_ECDSA_NISTP521) { |
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471 loadhostkey_helper("ECDSA521", (void**)&read_key->ecckey521, (void**)&svr_opts.hostkey->ecckey521, fatal_duplicate); |
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472 } |
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473 #endif |
857 | 474 #endif /* DROPBEAR_ECDSA */ |
795 | 475 sign_key_free(read_key); |
476 TRACE(("leave loadhostkey")) | |
477 } | |
478 | |
479 static void addhostkey(const char *keyfile) { | |
480 if (svr_opts.num_hostkey_files >= MAX_HOSTKEYS) { | |
481 dropbear_exit("Too many hostkeys"); | |
482 } | |
483 svr_opts.hostkey_files[svr_opts.num_hostkey_files] = m_strdup(keyfile); | |
484 svr_opts.num_hostkey_files++; | |
485 } | |
486 | |
487 void load_all_hostkeys() { | |
488 int i; | |
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489 int disable_unset_keys = 1; |
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490 int any_keys = 0; |
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491 |
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492 svr_opts.hostkey = new_sign_key(); |
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493 |
795 | 494 for (i = 0; i < svr_opts.num_hostkey_files; i++) { |
495 char *hostkey_file = svr_opts.hostkey_files[i]; | |
496 loadhostkey(hostkey_file, 1); | |
497 m_free(hostkey_file); | |
498 } | |
499 | |
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500 #ifdef DROPBEAR_RSA |
795 | 501 loadhostkey(RSA_PRIV_FILENAME, 0); |
502 #endif | |
503 | |
504 #ifdef DROPBEAR_DSS | |
505 loadhostkey(DSS_PRIV_FILENAME, 0); | |
506 #endif | |
507 | |
508 #ifdef DROPBEAR_ECDSA | |
509 loadhostkey(ECDSA_PRIV_FILENAME, 0); | |
510 #endif | |
511 | |
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512 #ifdef DROPBEAR_DELAY_HOSTKEY |
876 | 513 if (svr_opts.delay_hostkey) { |
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514 disable_unset_keys = 0; |
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515 } |
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516 #endif |
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517 |
795 | 518 #ifdef DROPBEAR_RSA |
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519 if (disable_unset_keys && !svr_opts.hostkey->rsakey) { |
795 | 520 disablekey(DROPBEAR_SIGNKEY_RSA); |
876 | 521 } else { |
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522 any_keys = 1; |
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523 } |
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524 #endif |
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525 |
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526 #ifdef DROPBEAR_DSS |
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527 if (disable_unset_keys && !svr_opts.hostkey->dsskey) { |
876 | 528 disablekey(DROPBEAR_SIGNKEY_DSS); |
529 } else { | |
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530 any_keys = 1; |
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531 } |
795 | 532 #endif |
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533 |
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534 |
795 | 535 #ifdef DROPBEAR_ECDSA |
536 #ifdef DROPBEAR_ECC_256 | |
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537 if ((disable_unset_keys || ECDSA_DEFAULT_SIZE != 256) |
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538 && !svr_opts.hostkey->ecckey256) { |
795 | 539 disablekey(DROPBEAR_SIGNKEY_ECDSA_NISTP256); |
876 | 540 } else { |
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541 any_keys = 1; |
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542 } |
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543 #endif |
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544 |
795 | 545 #ifdef DROPBEAR_ECC_384 |
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546 if ((disable_unset_keys || ECDSA_DEFAULT_SIZE != 384) |
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547 && !svr_opts.hostkey->ecckey384) { |
795 | 548 disablekey(DROPBEAR_SIGNKEY_ECDSA_NISTP384); |
876 | 549 } else { |
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550 any_keys = 1; |
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551 } |
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552 #endif |
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553 |
795 | 554 #ifdef DROPBEAR_ECC_521 |
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555 if ((disable_unset_keys || ECDSA_DEFAULT_SIZE != 521) |
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556 && !svr_opts.hostkey->ecckey521) { |
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557 disablekey(DROPBEAR_SIGNKEY_ECDSA_NISTP521); |
876 | 558 } else { |
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559 any_keys = 1; |
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560 } |
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561 #endif |
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562 #endif /* DROPBEAR_ECDSA */ |
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563 |
876 | 564 if (!any_keys) { |
1177 | 565 dropbear_exit("No hostkeys available. 'dropbear -R' may be useful or run dropbearkey."); |
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566 } |
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567 } |