Mercurial > dropbear
annotate svr-runopts.c @ 1367:00fb0a1f9b70 fuzz
define SIZE_T_MAX
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 22 May 2017 22:09:46 +0800 |
parents | 3fdd8c5a0195 |
children | 798854f62430 |
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 #if DROPBEAR_DSS |
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50 " dss %s\n" |
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51 #endif |
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52 #if DROPBEAR_RSA |
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53 " rsa %s\n" |
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54 #endif |
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55 #if DROPBEAR_ECDSA |
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56 " ecdsa %s\n" |
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57 #endif |
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58 #if 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" |
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71 #if DROPBEAR_SVR_PASSWORD_AUTH || DROPBEAR_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 #if DROPBEAR_SVR_LOCALTCPFWD |
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77 "-j Disable local port forwarding\n" |
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78 #endif |
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79 #if DROPBEAR_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 #if DEBUG_TRACE |
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98 "-v verbose (compiled with DEBUG_TRACE)\n" |
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99 #endif |
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100 ,DROPBEAR_VERSION, progname, |
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101 #if DROPBEAR_DSS |
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102 DSS_PRIV_FILENAME, |
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103 #endif |
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104 #if DROPBEAR_RSA |
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105 RSA_PRIV_FILENAME, |
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106 #endif |
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107 #if 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; |
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140 #if DROPBEAR_SVR_LOCALTCPFWD |
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141 svr_opts.nolocaltcp = 0; |
271
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142 #endif |
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143 #if DROPBEAR_SVR_REMOTETCPFWD |
258
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144 svr_opts.noremotetcp = 0; |
271
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145 #endif |
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146 |
575
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147 #ifndef DISABLE_ZLIB |
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148 opts.compress_mode = DROPBEAR_COMPRESS_DELAYED; |
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149 #endif |
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150 |
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151 /* not yet |
33 | 152 opts.ipv4 = 1; |
153 opts.ipv6 = 1; | |
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154 */ |
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155 #ifdef DO_MOTD |
24 | 156 svr_opts.domotd = 1; |
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157 #endif |
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158 #ifndef DISABLE_SYSLOG |
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159 opts.usingsyslog = 1; |
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160 #endif |
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161 opts.recv_window = DEFAULT_RECV_WINDOW; |
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162 opts.keepalive_secs = DEFAULT_KEEPALIVE; |
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163 opts.idle_timeout_secs = DEFAULT_IDLE_TIMEOUT; |
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164 |
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165 #if DROPBEAR_SVR_REMOTETCPFWD |
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166 opts.listen_fwd_all = 0; |
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167 #endif |
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168 |
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169 for (i = 1; i < (unsigned int)argc; i++) { |
1164 | 170 if (argv[i][0] != '-' || argv[i][1] == '\0') |
171 dropbear_exit("Invalid argument: %s", argv[i]); | |
795 | 172 |
1164 | 173 for (j = 1; (c = argv[i][j]) != '\0' && !next && !nextisport; j++) { |
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174 switch (c) { |
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175 case 'b': |
24 | 176 next = &svr_opts.bannerfile; |
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177 break; |
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178 case 'c': |
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179 next = &svr_opts.forced_command; |
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180 break; |
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181 case 'd': |
795 | 182 case 'r': |
183 next = &keyfile; | |
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184 break; |
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185 case 'R': |
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186 svr_opts.delay_hostkey = 1; |
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187 break; |
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188 case 'F': |
24 | 189 svr_opts.forkbg = 0; |
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190 break; |
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191 #ifndef DISABLE_SYSLOG |
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192 case 'E': |
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193 opts.usingsyslog = 0; |
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194 break; |
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195 #endif |
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196 #if DROPBEAR_SVR_LOCALTCPFWD |
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197 case 'j': |
258
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198 svr_opts.nolocaltcp = 1; |
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199 break; |
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200 #endif |
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201 #if DROPBEAR_SVR_REMOTETCPFWD |
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202 case 'k': |
258
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203 svr_opts.noremotetcp = 1; |
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204 break; |
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205 case 'a': |
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206 opts.listen_fwd_all = 1; |
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207 break; |
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208 #endif |
71
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209 #ifdef INETD_MODE |
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210 case 'i': |
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211 svr_opts.inetdmode = 1; |
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212 break; |
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213 #endif |
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214 case 'p': |
434
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215 nextisport = 1; |
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216 break; |
323
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217 case 'P': |
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218 next = &svr_opts.pidfile; |
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219 break; |
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220 #ifdef DO_MOTD |
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221 /* motd is displayed by default, -m turns it off */ |
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222 case 'm': |
24 | 223 svr_opts.domotd = 0; |
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224 break; |
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225 #endif |
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226 case 'w': |
24 | 227 svr_opts.norootlogin = 1; |
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228 break; |
449
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229 case 'W': |
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230 next = &recv_window_arg; |
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231 break; |
454
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232 case 'K': |
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233 next = &keepalive_arg; |
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234 break; |
513
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235 case 'I': |
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236 next = &idle_timeout_arg; |
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237 break; |
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238 #if DROPBEAR_SVR_PASSWORD_AUTH || DROPBEAR_SVR_PAM_AUTH |
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239 case 's': |
24 | 240 svr_opts.noauthpass = 1; |
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241 break; |
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242 case 'g': |
24 | 243 svr_opts.norootpass = 1; |
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244 break; |
692
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245 case 'B': |
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246 svr_opts.allowblankpass = 1; |
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247 break; |
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248 #endif |
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249 case 'h': |
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250 printhelp(argv[0]); |
946 | 251 exit(EXIT_SUCCESS); |
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252 break; |
442
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253 case 'u': |
446
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254 /* backwards compatibility with old urandom option */ |
442
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255 break; |
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256 #if DEBUG_TRACE |
94
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257 case 'v': |
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258 debug_trace = 1; |
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259 break; |
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260 #endif |
946 | 261 case 'V': |
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262 print_version(); |
946 | 263 exit(EXIT_SUCCESS); |
264 break; | |
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265 default: |
1164 | 266 fprintf(stderr, "Invalid option -%c\n", c); |
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267 printhelp(argv[0]); |
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268 exit(EXIT_FAILURE); |
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269 break; |
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270 } |
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271 } |
1164 | 272 |
273 if (!next && !nextisport) | |
274 continue; | |
275 | |
276 if (c == '\0') { | |
277 i++; | |
278 j = 0; | |
279 if (!argv[i]) { | |
280 dropbear_exit("Missing argument"); | |
281 } | |
282 } | |
283 | |
284 if (nextisport) { | |
285 addportandaddress(&argv[i][j]); | |
286 nextisport = 0; | |
287 } else if (next) { | |
288 *next = &argv[i][j]; | |
289 if (*next == NULL) { | |
290 dropbear_exit("Invalid null argument"); | |
291 } | |
292 next = 0x00; | |
293 | |
294 if (keyfile) { | |
295 addhostkey(keyfile); | |
296 keyfile = NULL; | |
297 } | |
298 } | |
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299 } |
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300 |
101
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301 /* Set up listening ports */ |
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302 if (svr_opts.portcount == 0) { |
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|
303 svr_opts.ports[0] = m_strdup(DROPBEAR_DEFPORT); |
434
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|
304 svr_opts.addresses[0] = m_strdup(DROPBEAR_DEFADDRESS); |
101
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305 svr_opts.portcount = 1; |
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306 } |
513
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|
307 |
24 | 308 if (svr_opts.bannerfile) { |
4
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309 struct stat buf; |
24 | 310 if (stat(svr_opts.bannerfile, &buf) != 0) { |
4
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311 dropbear_exit("Error opening banner file '%s'", |
24 | 312 svr_opts.bannerfile); |
4
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313 } |
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314 |
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315 if (buf.st_size > MAX_BANNER_SIZE) { |
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316 dropbear_exit("Banner file too large, max is %d bytes", |
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|
317 MAX_BANNER_SIZE); |
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318 } |
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|
319 |
24 | 320 svr_opts.banner = buf_new(buf.st_size); |
321 if (buf_readfile(svr_opts.banner, svr_opts.bannerfile)!=DROPBEAR_SUCCESS) { | |
4
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322 dropbear_exit("Error reading banner file '%s'", |
24 | 323 svr_opts.bannerfile); |
4
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324 } |
24 | 325 buf_setpos(svr_opts.banner, 0); |
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326 } |
449
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Add -W <windowsize> argument and document it.
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327 |
454
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|
328 if (recv_window_arg) { |
449
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|
329 opts.recv_window = atol(recv_window_arg); |
492
b956d6151600
Replace calls to strtoul() with a helper m_str_to_uint()
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|
330 if (opts.recv_window == 0 || opts.recv_window > MAX_RECV_WINDOW) { |
449
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331 dropbear_exit("Bad recv window '%s'", recv_window_arg); |
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332 } |
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|
333 } |
454
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|
334 |
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|
335 if (keepalive_arg) { |
568
005530560594
Rearrange getaddrstring() etc
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|
336 unsigned int val; |
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337 if (m_str_to_uint(keepalive_arg, &val) == DROPBEAR_FAILURE) { |
454
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338 dropbear_exit("Bad keepalive '%s'", keepalive_arg); |
7e43f5e473b9
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|
339 } |
568
005530560594
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|
340 opts.keepalive_secs = val; |
454
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|
341 } |
513
a3748e54273c
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342 |
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changeset
|
343 if (idle_timeout_arg) { |
568
005530560594
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diff
changeset
|
344 unsigned int val; |
005530560594
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|
345 if (m_str_to_uint(idle_timeout_arg, &val) == DROPBEAR_FAILURE) { |
513
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|
346 dropbear_exit("Bad idle_timeout '%s'", idle_timeout_arg); |
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|
347 } |
568
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|
348 opts.idle_timeout_secs = val; |
513
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|
349 } |
1290
ee2ffa044c7e
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|
350 |
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|
351 if (svr_opts.forced_command) { |
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|
352 dropbear_log(LOG_INFO, "Forced command set to '%s'", svr_opts.forced_command); |
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|
353 } |
4
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|
354 } |
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|
355 |
1197
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|
356 static void addportandaddress(const char* spec) { |
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357 char *spec_copy = NULL, *myspec = NULL, *port = NULL, *address = NULL; |
434
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|
358 |
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|
359 if (svr_opts.portcount < DROPBEAR_MAX_PORTS) { |
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|
360 |
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changeset
|
361 /* We don't free it, it becomes part of the runopt state */ |
1197
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362 spec_copy = m_strdup(spec); |
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|
363 myspec = spec_copy; |
434
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changeset
|
364 |
706
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
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parents:
692
diff
changeset
|
365 if (myspec[0] == '[') { |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
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parents:
692
diff
changeset
|
366 myspec++; |
1197
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|
367 port = strchr(myspec, ']'); |
86a9e0204c03
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1177
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changeset
|
368 if (!port) { |
706
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
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parents:
692
diff
changeset
|
369 /* Unmatched [ -> exit */ |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
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parents:
692
diff
changeset
|
370 dropbear_exit("Bad listen address"); |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
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parents:
692
diff
changeset
|
371 } |
1197
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1177
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changeset
|
372 port[0] = '\0'; |
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
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parents:
1177
diff
changeset
|
373 port++; |
86a9e0204c03
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Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
374 if (port[0] != ':') { |
706
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
375 /* Missing port -> exit */ |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
376 dropbear_exit("Missing port"); |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
377 } |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
378 } else { |
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
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parents:
692
diff
changeset
|
379 /* 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
|
380 port = strrchr(myspec, ':'); |
706
002cf09827c0
Allow specifying server "-p" options with ipv6 bracket notation,
Matt Johnston <matt@ucc.asn.au>
parents:
692
diff
changeset
|
381 } |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
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parents:
271
diff
changeset
|
382 |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
383 if (!port) { |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
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parents:
271
diff
changeset
|
384 /* 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
|
385 port = myspec; |
434
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
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parents:
271
diff
changeset
|
386 } else { |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
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parents:
271
diff
changeset
|
387 /* 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
|
388 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
|
389 port++; |
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
390 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
|
391 } |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
392 |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
393 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
|
394 /* 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
|
395 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
|
396 } |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
397 |
1197
86a9e0204c03
ports and addresses must be malloced to avoid segfault on exit
Matt Johnston <matt@ucc.asn.au>
parents:
1177
diff
changeset
|
398 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
|
399 /* empty port -> exit */ |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
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parents:
271
diff
changeset
|
400 dropbear_exit("Bad port"); |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
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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 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
|
403 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
|
404 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
|
405 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
|
406 } |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
407 } |
0aaaf68e97dc
Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents:
271
diff
changeset
|
408 |
795 | 409 static void disablekey(int type) { |
4
fe6bca95afa7
Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
410 int i; |
802 | 411 TRACE(("Disabling key type %d", type)) |
47 | 412 for (i = 0; sshhostkey[i].name != NULL; i++) { |
413 if (sshhostkey[i].val == type) { | |
802 | 414 sshhostkey[i].usable = 0; |
47 | 415 break; |
416 } | |
4
fe6bca95afa7
Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
417 } |
fe6bca95afa7
Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
418 } |
fe6bca95afa7
Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
419 |
807
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
420 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
|
421 if (*dst) { |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
422 if (fatal_duplicate) { |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
423 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
|
424 } |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
425 } else { |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
426 *dst = *src; |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
427 *src = NULL; |
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 |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
diff
changeset
|
430 } |
75509065db53
have separate ecdsa keys for each size
Matt Johnston <matt@ucc.asn.au>
parents:
802
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431 |
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432 /* Must be called after syslog/etc is working */ |
795 | 433 static void loadhostkey(const char *keyfile, int fatal_duplicate) { |
434 sign_key * read_key = new_sign_key(); | |
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435 enum signkey_type type = DROPBEAR_SIGNKEY_ANY; |
795 | 436 if (readhostkey(keyfile, read_key, &type) == DROPBEAR_FAILURE) { |
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437 if (!svr_opts.delay_hostkey) { |
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438 dropbear_log(LOG_WARNING, "Failed loading %s", keyfile); |
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439 } |
795 | 440 } |
441 | |
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442 #if DROPBEAR_RSA |
795 | 443 if (type == DROPBEAR_SIGNKEY_RSA) { |
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444 loadhostkey_helper("RSA", (void**)&read_key->rsakey, (void**)&svr_opts.hostkey->rsakey, fatal_duplicate); |
795 | 445 } |
446 #endif | |
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447 |
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448 #if DROPBEAR_DSS |
795 | 449 if (type == DROPBEAR_SIGNKEY_DSS) { |
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450 loadhostkey_helper("DSS", (void**)&read_key->dsskey, (void**)&svr_opts.hostkey->dsskey, fatal_duplicate); |
795 | 451 } |
452 #endif | |
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453 |
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454 #if DROPBEAR_ECDSA |
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455 #if DROPBEAR_ECC_256 |
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456 if (type == DROPBEAR_SIGNKEY_ECDSA_NISTP256) { |
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457 loadhostkey_helper("ECDSA256", (void**)&read_key->ecckey256, (void**)&svr_opts.hostkey->ecckey256, fatal_duplicate); |
795 | 458 } |
459 #endif | |
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460 #if DROPBEAR_ECC_384 |
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461 if (type == DROPBEAR_SIGNKEY_ECDSA_NISTP384) { |
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462 loadhostkey_helper("ECDSA384", (void**)&read_key->ecckey384, (void**)&svr_opts.hostkey->ecckey384, fatal_duplicate); |
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463 } |
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464 #endif |
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465 #if DROPBEAR_ECC_521 |
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466 if (type == DROPBEAR_SIGNKEY_ECDSA_NISTP521) { |
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467 loadhostkey_helper("ECDSA521", (void**)&read_key->ecckey521, (void**)&svr_opts.hostkey->ecckey521, fatal_duplicate); |
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468 } |
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469 #endif |
857 | 470 #endif /* DROPBEAR_ECDSA */ |
795 | 471 sign_key_free(read_key); |
472 TRACE(("leave loadhostkey")) | |
473 } | |
474 | |
475 static void addhostkey(const char *keyfile) { | |
476 if (svr_opts.num_hostkey_files >= MAX_HOSTKEYS) { | |
477 dropbear_exit("Too many hostkeys"); | |
478 } | |
479 svr_opts.hostkey_files[svr_opts.num_hostkey_files] = m_strdup(keyfile); | |
480 svr_opts.num_hostkey_files++; | |
481 } | |
482 | |
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483 |
795 | 484 void load_all_hostkeys() { |
485 int i; | |
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486 int disable_unset_keys = 1; |
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487 int any_keys = 0; |
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488 |
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489 svr_opts.hostkey = new_sign_key(); |
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490 |
795 | 491 for (i = 0; i < svr_opts.num_hostkey_files; i++) { |
492 char *hostkey_file = svr_opts.hostkey_files[i]; | |
493 loadhostkey(hostkey_file, 1); | |
494 m_free(hostkey_file); | |
495 } | |
496 | |
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497 #if DROPBEAR_RSA |
795 | 498 loadhostkey(RSA_PRIV_FILENAME, 0); |
499 #endif | |
500 | |
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501 #if DROPBEAR_DSS |
795 | 502 loadhostkey(DSS_PRIV_FILENAME, 0); |
503 #endif | |
504 | |
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505 #if DROPBEAR_ECDSA |
795 | 506 loadhostkey(ECDSA_PRIV_FILENAME, 0); |
507 #endif | |
508 | |
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509 #if DROPBEAR_DELAY_HOSTKEY |
876 | 510 if (svr_opts.delay_hostkey) { |
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511 disable_unset_keys = 0; |
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512 } |
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513 #endif |
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514 |
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515 #if DROPBEAR_RSA |
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516 if (disable_unset_keys && !svr_opts.hostkey->rsakey) { |
795 | 517 disablekey(DROPBEAR_SIGNKEY_RSA); |
876 | 518 } else { |
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519 any_keys = 1; |
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520 } |
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521 #endif |
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522 |
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523 #if DROPBEAR_DSS |
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524 if (disable_unset_keys && !svr_opts.hostkey->dsskey) { |
876 | 525 disablekey(DROPBEAR_SIGNKEY_DSS); |
526 } else { | |
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527 any_keys = 1; |
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528 } |
795 | 529 #endif |
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530 |
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531 |
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532 #if DROPBEAR_ECDSA |
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533 #if DROPBEAR_ECC_256 |
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534 if ((disable_unset_keys || ECDSA_DEFAULT_SIZE != 256) |
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535 && !svr_opts.hostkey->ecckey256) { |
795 | 536 disablekey(DROPBEAR_SIGNKEY_ECDSA_NISTP256); |
876 | 537 } else { |
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538 any_keys = 1; |
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539 } |
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540 #endif |
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541 |
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542 #if DROPBEAR_ECC_384 |
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543 if ((disable_unset_keys || ECDSA_DEFAULT_SIZE != 384) |
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544 && !svr_opts.hostkey->ecckey384) { |
795 | 545 disablekey(DROPBEAR_SIGNKEY_ECDSA_NISTP384); |
876 | 546 } else { |
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547 any_keys = 1; |
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548 } |
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549 #endif |
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550 |
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551 #if DROPBEAR_ECC_521 |
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552 if ((disable_unset_keys || ECDSA_DEFAULT_SIZE != 521) |
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553 && !svr_opts.hostkey->ecckey521) { |
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554 disablekey(DROPBEAR_SIGNKEY_ECDSA_NISTP521); |
876 | 555 } else { |
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556 any_keys = 1; |
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557 } |
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558 #endif |
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559 #endif /* DROPBEAR_ECDSA */ |
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560 |
876 | 561 if (!any_keys) { |
1177 | 562 dropbear_exit("No hostkeys available. 'dropbear -R' may be useful or run dropbearkey."); |
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563 } |
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564 } |