Mercurial > dropbear
annotate svr-main.c @ 447:278805938dcf
Patch from Nicolai Ehemann to try binding before going to the background,
so that if it exits early (because something's already listening etc)
then it will return an exitcode of 1.
author | Matt Johnston <matt@ucc.asn.au> |
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date | Thu, 19 Jul 2007 15:54:18 +0000 |
parents | edbee0596531 |
children | 7e43f5e473b9 |
rev | line source |
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1 /* |
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2 * Dropbear - a SSH2 server |
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3 * |
290 | 4 * Copyright (c) 2002-2006 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 "dbutil.h" |
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27 #include "session.h" |
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28 #include "buffer.h" |
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29 #include "signkey.h" |
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30 #include "runopts.h" |
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31 #include "random.h" |
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32 |
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33 static size_t listensockets(int *sock, size_t sockcount, int *maxfd); |
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34 static void sigchld_handler(int dummy); |
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35 static void sigsegv_handler(int); |
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36 static void sigintterm_handler(int fish); |
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37 #ifdef INETD_MODE |
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38 static void main_inetd(); |
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39 #endif |
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40 #ifdef NON_INETD_MODE |
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41 static void main_noinetd(); |
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42 #endif |
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43 static void commonsetup(); |
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44 |
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45 #if defined(DBMULTI_dropbear) || !defined(DROPBEAR_MULTI) |
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46 #if defined(DBMULTI_dropbear) && defined(DROPBEAR_MULTI) |
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47 int dropbear_main(int argc, char ** argv) |
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48 #else |
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49 int main(int argc, char ** argv) |
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50 #endif |
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51 { |
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52 _dropbear_exit = svr_dropbear_exit; |
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53 _dropbear_log = svr_dropbear_log; |
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54 |
425 | 55 disallow_core(); |
56 | |
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57 /* get commandline options */ |
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58 svr_getopts(argc, argv); |
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59 |
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60 #ifdef INETD_MODE |
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61 /* service program mode */ |
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62 if (svr_opts.inetdmode) { |
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63 main_inetd(); |
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64 /* notreached */ |
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65 } |
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66 #endif |
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67 |
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68 #ifdef NON_INETD_MODE |
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69 main_noinetd(); |
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70 /* notreached */ |
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71 #endif |
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72 |
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73 dropbear_exit("Compiled without normal mode, can't run without -i\n"); |
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74 return -1; |
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75 } |
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76 #endif |
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77 |
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78 #ifdef INETD_MODE |
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79 static void main_inetd() { |
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80 |
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81 struct sockaddr_storage remoteaddr; |
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82 socklen_t remoteaddrlen; |
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83 char * addrstring = NULL; |
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84 |
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85 /* Set up handlers, syslog, seed random */ |
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86 commonsetup(); |
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87 |
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88 remoteaddrlen = sizeof(remoteaddr); |
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89 if (getpeername(0, (struct sockaddr*)&remoteaddr, &remoteaddrlen) < 0) { |
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90 dropbear_exit("Unable to getpeername: %s", strerror(errno)); |
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91 } |
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92 |
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93 /* In case our inetd was lax in logging source addresses */ |
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94 addrstring = getaddrstring(&remoteaddr, 1); |
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95 dropbear_log(LOG_INFO, "Child connection from %s", addrstring); |
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96 |
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97 /* Don't check the return value - it may just fail since inetd has |
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98 * already done setsid() after forking (xinetd on Darwin appears to do |
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99 * this */ |
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100 setsid(); |
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101 |
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102 /* Start service program |
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103 * -1 is a dummy childpipe, just something we can close() without |
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104 * mattering. */ |
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105 svr_session(0, -1, getaddrhostname(&remoteaddr), addrstring); |
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106 |
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107 /* notreached */ |
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108 } |
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109 #endif /* INETD_MODE */ |
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110 |
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111 #ifdef NON_INETD_MODE |
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112 void main_noinetd() { |
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113 fd_set fds; |
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114 struct timeval seltimeout; |
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115 unsigned int i, j; |
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116 int val; |
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117 int maxsock = -1; |
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118 int listensocks[MAX_LISTEN_ADDR]; |
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119 size_t listensockcount = 0; |
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120 FILE *pidfile = NULL; |
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121 |
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122 int childpipes[MAX_UNAUTH_CLIENTS]; |
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123 char * preauth_addrs[MAX_UNAUTH_CLIENTS]; |
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124 |
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125 int childsock; |
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126 int childpipe[2]; |
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127 |
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128 /* Note: commonsetup() must happen before we daemon()ise. Otherwise |
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129 daemon() will chdir("/"), and we won't be able to find local-dir |
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130 hostkeys. */ |
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131 commonsetup(); |
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132 |
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133 /* sockets to identify pre-authenticated clients */ |
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134 for (i = 0; i < MAX_UNAUTH_CLIENTS; i++) { |
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135 childpipes[i] = -1; |
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136 } |
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137 bzero(preauth_addrs, sizeof(preauth_addrs)); |
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138 |
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139 /* Set up the listening sockets */ |
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140 listensockcount = listensockets(listensocks, MAX_LISTEN_ADDR, &maxsock); |
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141 if (listensockcount == 0) |
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142 { |
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143 dropbear_exit("No listening ports available."); |
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144 } |
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145 |
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146 /* fork */ |
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147 if (svr_opts.forkbg) { |
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148 int closefds = 0; |
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149 #ifndef DEBUG_TRACE |
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150 if (!svr_opts.usingsyslog) { |
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151 closefds = 1; |
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152 } |
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153 #endif |
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154 if (daemon(0, closefds) < 0) { |
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155 dropbear_exit("Failed to daemonize: %s", strerror(errno)); |
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156 } |
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157 } |
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158 |
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159 /* should be done after syslog is working */ |
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160 if (svr_opts.forkbg) { |
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161 dropbear_log(LOG_INFO, "Running in background"); |
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162 } else { |
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163 dropbear_log(LOG_INFO, "Not backgrounding"); |
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164 } |
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165 |
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166 /* create a PID file so that we can be killed easily */ |
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167 pidfile = fopen(svr_opts.pidfile, "w"); |
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168 if (pidfile) { |
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169 fprintf(pidfile, "%d\n", getpid()); |
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170 fclose(pidfile); |
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171 } |
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172 |
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173 /* incoming connection select loop */ |
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174 for(;;) { |
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175 |
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176 FD_ZERO(&fds); |
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177 |
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178 seltimeout.tv_sec = 60; |
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179 seltimeout.tv_usec = 0; |
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180 |
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181 /* listening sockets */ |
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182 for (i = 0; i < listensockcount; i++) { |
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183 FD_SET(listensocks[i], &fds); |
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184 } |
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185 |
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186 /* pre-authentication clients */ |
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187 for (i = 0; i < MAX_UNAUTH_CLIENTS; i++) { |
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188 if (childpipes[i] >= 0) { |
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189 FD_SET(childpipes[i], &fds); |
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190 maxsock = MAX(maxsock, childpipes[i]); |
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191 } |
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192 } |
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193 |
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194 val = select(maxsock+1, &fds, NULL, NULL, &seltimeout); |
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195 |
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196 if (exitflag) { |
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197 unlink(svr_opts.pidfile); |
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198 dropbear_exit("Terminated by signal"); |
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199 } |
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200 |
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201 if (val == 0) { |
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202 /* timeout reached */ |
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203 continue; |
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204 } |
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205 |
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206 if (val < 0) { |
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207 if (errno == EINTR) { |
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208 continue; |
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209 } |
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210 dropbear_exit("Listening socket error"); |
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211 } |
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212 |
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213 /* close fds which have been authed or closed - svr-auth.c handles |
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214 * closing the auth sockets on success */ |
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215 for (i = 0; i < MAX_UNAUTH_CLIENTS; i++) { |
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216 if (childpipes[i] >= 0 && FD_ISSET(childpipes[i], &fds)) { |
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217 m_close(childpipes[i]); |
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218 childpipes[i] = -1; |
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219 m_free(preauth_addrs[i]); |
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220 } |
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221 } |
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222 |
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223 /* handle each socket which has something to say */ |
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224 for (i = 0; i < listensockcount; i++) { |
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225 |
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226 struct sockaddr_storage remoteaddr; |
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227 socklen_t remoteaddrlen = 0; |
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228 size_t num_unauthed_for_addr = 0; |
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229 size_t num_unauthed_total = 0; |
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230 char * remote_addr_str = NULL; |
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231 pid_t fork_ret = 0; |
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232 size_t conn_idx = 0; |
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233 |
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234 if (!FD_ISSET(listensocks[i], &fds)) |
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235 continue; |
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236 |
62 | 237 remoteaddrlen = sizeof(remoteaddr); |
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238 childsock = accept(listensocks[i], |
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239 (struct sockaddr*)&remoteaddr, &remoteaddrlen); |
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|
240 |
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|
241 if (childsock < 0) { |
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242 /* accept failed */ |
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|
243 continue; |
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parents:
diff
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|
244 } |
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|
245 |
277
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* Per-IP connection unauthed connection limits
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258
diff
changeset
|
246 /* Limit the number of unauthenticated connections per IP */ |
044bc108b9b3
* Per-IP connection unauthed connection limits
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258
diff
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|
247 remote_addr_str = getaddrstring(&remoteaddr, 0); |
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258
diff
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|
248 |
044bc108b9b3
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258
diff
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|
249 num_unauthed_for_addr = 0; |
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* Per-IP connection unauthed connection limits
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258
diff
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|
250 num_unauthed_total = 0; |
30
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|
251 for (j = 0; j < MAX_UNAUTH_CLIENTS; j++) { |
277
044bc108b9b3
* Per-IP connection unauthed connection limits
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258
diff
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|
252 if (childpipes[j] >= 0) { |
044bc108b9b3
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258
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|
253 num_unauthed_total++; |
044bc108b9b3
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258
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|
254 if (strcmp(remote_addr_str, preauth_addrs[j]) == 0) { |
044bc108b9b3
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diff
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|
255 num_unauthed_for_addr++; |
044bc108b9b3
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|
256 } |
044bc108b9b3
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258
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|
257 } else { |
044bc108b9b3
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258
diff
changeset
|
258 /* a free slot */ |
044bc108b9b3
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258
diff
changeset
|
259 conn_idx = j; |
30
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260 } |
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|
261 } |
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262 |
277
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|
263 if (num_unauthed_total >= MAX_UNAUTH_CLIENTS |
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264 || num_unauthed_for_addr >= MAX_UNAUTH_PER_IP) { |
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265 goto out; |
30
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|
266 } |
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267 |
223b0f5f8dce
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|
268 if (pipe(childpipe) < 0) { |
165
0cfba3034be5
Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
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158
diff
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|
269 TRACE(("error creating child pipe")) |
277
044bc108b9b3
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270 goto out; |
30
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|
271 } |
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272 |
277
044bc108b9b3
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|
273 fork_ret = fork(); |
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|
274 if (fork_ret < 0) { |
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275 dropbear_log(LOG_WARNING, "error forking: %s", strerror(errno)); |
044bc108b9b3
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|
276 goto out; |
044bc108b9b3
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|
277 |
044bc108b9b3
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|
278 } else if (fork_ret > 0) { |
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|
279 |
044bc108b9b3
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258
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|
280 /* parent */ |
044bc108b9b3
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|
281 childpipes[conn_idx] = childpipe[0]; |
044bc108b9b3
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258
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|
282 m_close(childpipe[1]); |
044bc108b9b3
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258
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|
283 preauth_addrs[conn_idx] = remote_addr_str; |
044bc108b9b3
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258
diff
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|
284 remote_addr_str = NULL; |
044bc108b9b3
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|
285 |
044bc108b9b3
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|
286 } else { |
30
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287 |
223b0f5f8dce
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|
288 /* child */ |
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changeset
|
289 char * addrstring = NULL; |
223b0f5f8dce
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changeset
|
290 #ifdef DEBUG_FORKGPROF |
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|
291 extern void _start(void), etext(void); |
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|
292 monstartup((u_long)&_start, (u_long)&etext); |
223b0f5f8dce
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changeset
|
293 #endif /* DEBUG_FORKGPROF */ |
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294 |
277
044bc108b9b3
* Per-IP connection unauthed connection limits
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258
diff
changeset
|
295 m_free(remote_addr_str); |
62 | 296 addrstring = getaddrstring(&remoteaddr, 1); |
30
223b0f5f8dce
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|
297 dropbear_log(LOG_INFO, "Child connection from %s", addrstring); |
223b0f5f8dce
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changeset
|
298 |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
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parents:
diff
changeset
|
299 if (setsid() < 0) { |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
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diff
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|
300 dropbear_exit("setsid: %s", strerror(errno)); |
223b0f5f8dce
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parents:
diff
changeset
|
301 } |
223b0f5f8dce
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parents:
diff
changeset
|
302 |
223b0f5f8dce
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Matt Johnston <matt@ucc.asn.au>
parents:
diff
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|
303 /* make sure we close sockets */ |
277
044bc108b9b3
* Per-IP connection unauthed connection limits
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parents:
258
diff
changeset
|
304 for (i = 0; i < listensockcount; i++) { |
044bc108b9b3
* Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
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258
diff
changeset
|
305 m_close(listensocks[i]); |
30
223b0f5f8dce
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parents:
diff
changeset
|
306 } |
223b0f5f8dce
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parents:
diff
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|
307 |
277
044bc108b9b3
* Per-IP connection unauthed connection limits
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258
diff
changeset
|
308 m_close(childpipe[0]); |
30
223b0f5f8dce
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parents:
diff
changeset
|
309 |
223b0f5f8dce
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parents:
diff
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|
310 /* start the session */ |
223b0f5f8dce
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Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
311 svr_session(childsock, childpipe[1], |
158
364a75cfebab
Log the IP along with auth success/fail attempts
Matt Johnston <matt@ucc.asn.au>
parents:
156
diff
changeset
|
312 getaddrhostname(&remoteaddr), |
364a75cfebab
Log the IP along with auth success/fail attempts
Matt Johnston <matt@ucc.asn.au>
parents:
156
diff
changeset
|
313 addrstring); |
30
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
314 /* don't return */ |
241
c5d3ef11155f
* use own assertions which should get logged properly
Matt Johnston <matt@ucc.asn.au>
parents:
165
diff
changeset
|
315 dropbear_assert(0); |
30
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
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changeset
|
316 } |
277
044bc108b9b3
* Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents:
258
diff
changeset
|
317 |
044bc108b9b3
* Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents:
258
diff
changeset
|
318 out: |
044bc108b9b3
* Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
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258
diff
changeset
|
319 /* This section is important for the parent too */ |
044bc108b9b3
* Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents:
258
diff
changeset
|
320 m_close(childsock); |
044bc108b9b3
* Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents:
258
diff
changeset
|
321 if (remote_addr_str) { |
044bc108b9b3
* Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents:
258
diff
changeset
|
322 m_free(remote_addr_str); |
30
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
323 } |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
324 } |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
325 } /* for(;;) loop */ |
223b0f5f8dce
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parents:
diff
changeset
|
326 |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
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parents:
diff
changeset
|
327 /* don't reach here */ |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
328 } |
71
ac96bc733e71
adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents:
63
diff
changeset
|
329 #endif /* NON_INETD_MODE */ |
ac96bc733e71
adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents:
63
diff
changeset
|
330 |
30
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
331 |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
332 /* catch + reap zombie children */ |
108
10f4d3319780
- added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents:
101
diff
changeset
|
333 static void sigchld_handler(int UNUSED(unused)) { |
30
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
334 struct sigaction sa_chld; |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
335 |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
336 while(waitpid(-1, NULL, WNOHANG) > 0); |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
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parents:
diff
changeset
|
337 |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
338 sa_chld.sa_handler = sigchld_handler; |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
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parents:
diff
changeset
|
339 sa_chld.sa_flags = SA_NOCLDSTOP; |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
340 if (sigaction(SIGCHLD, &sa_chld, NULL) < 0) { |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
341 dropbear_exit("signal() error"); |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
342 } |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
343 } |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
344 |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
345 /* catch any segvs */ |
108
10f4d3319780
- added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents:
101
diff
changeset
|
346 static void sigsegv_handler(int UNUSED(unused)) { |
30
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
347 fprintf(stderr, "Aiee, segfault! You should probably report " |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
348 "this as a bug to the developer\n"); |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
349 exit(EXIT_FAILURE); |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
350 } |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
351 |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
352 /* catch ctrl-c or sigterm */ |
108
10f4d3319780
- added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents:
101
diff
changeset
|
353 static void sigintterm_handler(int UNUSED(unused)) { |
30
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
354 |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
355 exitflag = 1; |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
356 } |
223b0f5f8dce
Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff
changeset
|
357 |
71
ac96bc733e71
adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents:
63
diff
changeset
|
358 /* Things used by inetd and non-inetd modes */ |
ac96bc733e71
adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents:
63
diff
changeset
|
359 static void commonsetup() { |
ac96bc733e71
adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents:
63
diff
changeset
|
360 |
ac96bc733e71
adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents:
63
diff
changeset
|
361 struct sigaction sa_chld; |
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362 #ifndef DISABLE_SYSLOG |
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363 if (svr_opts.usingsyslog) { |
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364 startsyslog(); |
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365 } |
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366 #endif |
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367 |
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368 /* set up cleanup handler */ |
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369 if (signal(SIGINT, sigintterm_handler) == SIG_ERR || |
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370 #ifndef DEBUG_VALGRIND |
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371 signal(SIGTERM, sigintterm_handler) == SIG_ERR || |
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372 #endif |
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373 signal(SIGPIPE, SIG_IGN) == SIG_ERR) { |
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374 dropbear_exit("signal() error"); |
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375 } |
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376 |
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377 /* catch and reap zombie children */ |
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378 sa_chld.sa_handler = sigchld_handler; |
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379 sa_chld.sa_flags = SA_NOCLDSTOP; |
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380 if (sigaction(SIGCHLD, &sa_chld, NULL) < 0) { |
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381 dropbear_exit("signal() error"); |
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382 } |
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383 if (signal(SIGSEGV, sigsegv_handler) == SIG_ERR) { |
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384 dropbear_exit("signal() error"); |
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385 } |
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386 |
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387 /* Now we can setup the hostkeys - needs to be after logging is on, |
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388 * otherwise we might end up blatting error messages to the socket */ |
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389 loadhostkeys(); |
272
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390 |
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391 seedrandom(); |
71
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392 } |
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393 |
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394 /* Set up listening sockets for all the requested ports */ |
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395 static size_t listensockets(int *sock, size_t sockcount, int *maxfd) { |
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396 |
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397 unsigned int i; |
62 | 398 char* errstring = NULL; |
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399 size_t sockpos = 0; |
62 | 400 int nsock; |
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401 |
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402 TRACE(("listensockets: %d to try\n", svr_opts.portcount)) |
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403 |
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404 for (i = 0; i < svr_opts.portcount; i++) { |
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405 |
434
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406 TRACE(("listening on '%s:%s'", svr_opts.addresses[i], svr_opts.ports[i])) |
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407 |
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408 nsock = dropbear_listen(svr_opts.addresses[i], svr_opts.ports[i], &sock[sockpos], |
62 | 409 sockcount - sockpos, |
410 &errstring, maxfd); | |
411 | |
412 if (nsock < 0) { | |
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413 dropbear_log(LOG_WARNING, "Failed listening on '%s': %s", |
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414 svr_opts.ports[i], errstring); |
62 | 415 m_free(errstring); |
416 continue; | |
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417 } |
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418 |
62 | 419 sockpos += nsock; |
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420 |
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421 } |
62 | 422 return sockpos; |
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423 } |