Mercurial > dropbear

annotate svr-main.c @ 561:541ebf5bf0f6

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propagate from branch 'au.asn.ucc.matt.dropbear.cli-agent' (head eb0dae4b62e243ba37a897beb7ba81a4f637d8b3) to branch 'au.asn.ucc.matt.dropbear' (head ff0abce7b29e61630e3b09e5fc5820ae6e192808)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 30 Jul 2009 15:15:12 +0000
parents 07a58e4da1ac
children 005530560594
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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) 2002-2006 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
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55 disallow_core();
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56
71
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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 unsigned int i, j;
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115 int val;
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116 int maxsock = -1;
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117 int listensocks[MAX_LISTEN_ADDR];
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118 size_t listensockcount = 0;
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119 FILE *pidfile = NULL;
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120
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121 int childpipes[MAX_UNAUTH_CLIENTS];
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122 char * preauth_addrs[MAX_UNAUTH_CLIENTS];
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123
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124 int childsock;
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125 int childpipe[2];
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126
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127 /* Note: commonsetup() must happen before we daemon()ise. Otherwise
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128 daemon() will chdir("/"), and we won't be able to find local-dir
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129 hostkeys. */
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130 commonsetup();
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131
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132 /* sockets to identify pre-authenticated clients */
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133 for (i = 0; i < MAX_UNAUTH_CLIENTS; i++) {
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134 childpipes[i] = -1;
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135 }
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136 memset(preauth_addrs, 0x0, sizeof(preauth_addrs));
447
278805938dcf Patch from Nicolai Ehemann to try binding before going to the background,
Matt Johnston <matt@ucc.asn.au>
parents: 445
diff changeset
137
278805938dcf Patch from Nicolai Ehemann to try binding before going to the background,
Matt Johnston <matt@ucc.asn.au>
parents: 445
diff changeset
138 /* Set up the listening sockets */
278805938dcf Patch from Nicolai Ehemann to try binding before going to the background,
Matt Johnston <matt@ucc.asn.au>
parents: 445
diff changeset
139 listensockcount = listensockets(listensocks, MAX_LISTEN_ADDR, &maxsock);
278805938dcf Patch from Nicolai Ehemann to try binding before going to the background,
Matt Johnston <matt@ucc.asn.au>
parents: 445
diff changeset
140 if (listensockcount == 0)
278805938dcf Patch from Nicolai Ehemann to try binding before going to the background,
Matt Johnston <matt@ucc.asn.au>
parents: 445
diff changeset
141 {
278805938dcf Patch from Nicolai Ehemann to try binding before going to the background,
Matt Johnston <matt@ucc.asn.au>
parents: 445
diff changeset
142 dropbear_exit("No listening ports available.");
278805938dcf Patch from Nicolai Ehemann to try binding before going to the background,
Matt Johnston <matt@ucc.asn.au>
parents: 445
diff changeset
143 }
278805938dcf Patch from Nicolai Ehemann to try binding before going to the background,
Matt Johnston <matt@ucc.asn.au>
parents: 445
diff changeset
144
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
145 /* fork */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
146 if (svr_opts.forkbg) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147 int closefds = 0;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148 #ifndef DEBUG_TRACE
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149 if (!svr_opts.usingsyslog) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
150 closefds = 1;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
151 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
152 #endif
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153 if (daemon(0, closefds) < 0) {
71
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
154 dropbear_exit("Failed to daemonize: %s", strerror(errno));
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
155 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
156 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
157
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
158 /* should be done after syslog is working */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
159 if (svr_opts.forkbg) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
160 dropbear_log(LOG_INFO, "Running in background");
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161 } else {
445
edbee0596531 "backgrounding" is more user-understandable than "forking"
Matt Johnston <matt@ucc.asn.au>
parents: 435
diff changeset
162 dropbear_log(LOG_INFO, "Not backgrounding");
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165 /* create a PID file so that we can be killed easily */
323
3bfbe95f9a14 Add -P pidfile patch from Swen Schillig
Matt Johnston <matt@ucc.asn.au>
parents: 298
diff changeset
166 pidfile = fopen(svr_opts.pidfile, "w");
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 if (pidfile) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168 fprintf(pidfile, "%d\n", getpid());
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 fclose(pidfile);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 /* incoming connection select loop */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 for(;;) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 FD_ZERO(&fds);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177 /* listening sockets */
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
178 for (i = 0; i < listensockcount; i++) {
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 FD_SET(listensocks[i], &fds);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
180 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 /* pre-authentication clients */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 for (i = 0; i < MAX_UNAUTH_CLIENTS; i++) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 if (childpipes[i] >= 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 FD_SET(childpipes[i], &fds);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 maxsock = MAX(maxsock, childpipes[i]);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 447
diff changeset
190 val = select(maxsock+1, &fds, NULL, NULL, NULL);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 if (exitflag) {
323
3bfbe95f9a14 Add -P pidfile patch from Swen Schillig
Matt Johnston <matt@ucc.asn.au>
parents: 298
diff changeset
193 unlink(svr_opts.pidfile);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
194 dropbear_exit("Terminated by signal");
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
196
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197 if (val == 0) {
454
7e43f5e473b9 - Add -K keepalive flag for dropbear and dbclient
Matt Johnston <matt@ucc.asn.au>
parents: 447
diff changeset
198 /* timeout reached - shouldn't happen. eh */
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199 continue;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 if (val < 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 if (errno == EINTR) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204 continue;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 dropbear_exit("Listening socket error");
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
209 /* close fds which have been authed or closed - svr-auth.c handles
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 * closing the auth sockets on success */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 for (i = 0; i < MAX_UNAUTH_CLIENTS; i++) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 if (childpipes[i] >= 0 && FD_ISSET(childpipes[i], &fds)) {
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
213 m_close(childpipes[i]);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214 childpipes[i] = -1;
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
215 m_free(preauth_addrs[i]);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 /* handle each socket which has something to say */
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
220 for (i = 0; i < listensockcount; i++) {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
221
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
222 struct sockaddr_storage remoteaddr;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
223 socklen_t remoteaddrlen = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
224 size_t num_unauthed_for_addr = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
225 size_t num_unauthed_total = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
226 char * remote_addr_str = NULL;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
227 pid_t fork_ret = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
228 size_t conn_idx = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
229
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230 if (!FD_ISSET(listensocks[i], &fds))
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 continue;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
232
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
233 remoteaddrlen = sizeof(remoteaddr);
63
dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
234 childsock = accept(listensocks[i],
dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding.
Matt Johnston <matt@ucc.asn.au>
parents: 62
diff changeset
235 (struct sockaddr*)&remoteaddr, &remoteaddrlen);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237 if (childsock < 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 /* accept failed */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239 continue;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
242 /* Limit the number of unauthenticated connections per IP */
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
243 remote_addr_str = getaddrstring(&remoteaddr, 0);
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
244
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
245 num_unauthed_for_addr = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
246 num_unauthed_total = 0;
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247 for (j = 0; j < MAX_UNAUTH_CLIENTS; j++) {
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
248 if (childpipes[j] >= 0) {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
249 num_unauthed_total++;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
250 if (strcmp(remote_addr_str, preauth_addrs[j]) == 0) {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
251 num_unauthed_for_addr++;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
252 }
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
253 } else {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
254 /* a free slot */
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
255 conn_idx = j;
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
256 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
257 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
258
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
259 if (num_unauthed_total >= MAX_UNAUTH_CLIENTS
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
260 || num_unauthed_for_addr >= MAX_UNAUTH_PER_IP) {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
261 goto out;
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
262 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
263
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
264 if (pipe(childpipe) < 0) {
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 158
diff changeset
265 TRACE(("error creating child pipe"))
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
266 goto out;
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
267 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
268
476
df7f7da7f6e4 - Rework pubkey options to be more careful about buffer lengths. Needs review.
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
269 #ifdef DEBUG_NOFORK
df7f7da7f6e4 - Rework pubkey options to be more careful about buffer lengths. Needs review.
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
270 fork_ret = 0;
df7f7da7f6e4 - Rework pubkey options to be more careful about buffer lengths. Needs review.
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
271 #else
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
272 fork_ret = fork();
476
df7f7da7f6e4 - Rework pubkey options to be more careful about buffer lengths. Needs review.
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
273 #endif
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
274 if (fork_ret < 0) {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
275 dropbear_log(LOG_WARNING, "error forking: %s", strerror(errno));
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
276 goto out;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
278 } else if (fork_ret > 0) {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
279
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
280 /* parent */
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
281 childpipes[conn_idx] = childpipe[0];
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
282 m_close(childpipe[1]);
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
283 preauth_addrs[conn_idx] = remote_addr_str;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
284 remote_addr_str = NULL;
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
285
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
286 } else {
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
287
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
288 /* child */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
289 char * addrstring = NULL;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
290 #ifdef DEBUG_FORKGPROF
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
291 extern void _start(void), etext(void);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
292 monstartup((u_long)&_start, (u_long)&etext);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
293 #endif /* DEBUG_FORKGPROF */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
294
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
295 m_free(remote_addr_str);
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
296 addrstring = getaddrstring(&remoteaddr, 1);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
297 dropbear_log(LOG_INFO, "Child connection from %s", addrstring);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
298
476
df7f7da7f6e4 - Rework pubkey options to be more careful about buffer lengths. Needs review.
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
299 #ifndef DEBUG_NOFORK
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
300 if (setsid() < 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
301 dropbear_exit("setsid: %s", strerror(errno));
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
302 }
476
df7f7da7f6e4 - Rework pubkey options to be more careful about buffer lengths. Needs review.
Matt Johnston <matt@ucc.asn.au>
parents: 454
diff changeset
303 #endif
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
304
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
305 /* make sure we close sockets */
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
306 for (i = 0; i < listensockcount; i++) {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
307 m_close(listensocks[i]);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
308 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
309
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
310 m_close(childpipe[0]);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
311
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
312 /* start the session */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
313 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
314 getaddrhostname(&remoteaddr),
364a75cfebab Log the IP along with auth success/fail attempts
Matt Johnston <matt@ucc.asn.au>
parents: 156
diff changeset
315 addrstring);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
316 /* don't return */
241
c5d3ef11155f * use own assertions which should get logged properly
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
317 dropbear_assert(0);
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
318 }
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
319
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
320 out:
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
321 /* 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
322 m_close(childsock);
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
323 if (remote_addr_str) {
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
324 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
325 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
326 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
327 } /* for(;;) loop */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
328
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
329 /* don't reach here */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
330 }
71
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
331 #endif /* NON_INETD_MODE */
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
332
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
333
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
334 /* catch + reap zombie children */
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 101
diff changeset
335 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
336 struct sigaction sa_chld;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
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 while(waitpid(-1, NULL, WNOHANG) > 0);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
339
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
340 sa_chld.sa_handler = sigchld_handler;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
341 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
342 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
343 dropbear_exit("signal() error");
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 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
346
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
347 /* catch any segvs */
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 101
diff changeset
348 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
349 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
350 "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
351 exit(EXIT_FAILURE);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
352 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
353
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
354 /* catch ctrl-c or sigterm */
108
10f4d3319780 - added circular buffering for channels
Matt Johnston <matt@ucc.asn.au>
parents: 101
diff changeset
355 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
356
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
357 exitflag = 1;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
358 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
359
71
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
360 /* 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
361 static void commonsetup() {
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
362
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
363 struct sigaction sa_chld;
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
364 #ifndef DISABLE_SYSLOG
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
365 if (svr_opts.usingsyslog) {
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
366 startsyslog();
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
367 }
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
368 #endif
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
369
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
370 /* set up cleanup handler */
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
371 if (signal(SIGINT, sigintterm_handler) == SIG_ERR ||
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
372 #ifndef DEBUG_VALGRIND
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
373 signal(SIGTERM, sigintterm_handler) == SIG_ERR ||
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
374 #endif
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
375 signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
376 dropbear_exit("signal() error");
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
377 }
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
378
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
379 /* catch and reap zombie children */
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
380 sa_chld.sa_handler = sigchld_handler;
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
381 sa_chld.sa_flags = SA_NOCLDSTOP;
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
382 if (sigaction(SIGCHLD, &sa_chld, NULL) < 0) {
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
383 dropbear_exit("signal() error");
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
384 }
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
385 if (signal(SIGSEGV, sigsegv_handler) == SIG_ERR) {
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
386 dropbear_exit("signal() error");
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
387 }
113
775c6cbfe995 Load the hostkeys for inetd too - oops
Matt Johnston <matt@ucc.asn.au>
parents: 108
diff changeset
388
775c6cbfe995 Load the hostkeys for inetd too - oops
Matt Johnston <matt@ucc.asn.au>
parents: 108
diff changeset
389 /* Now we can setup the hostkeys - needs to be after logging is on,
775c6cbfe995 Load the hostkeys for inetd too - oops
Matt Johnston <matt@ucc.asn.au>
parents: 108
diff changeset
390 * otherwise we might end up blatting error messages to the socket */
775c6cbfe995 Load the hostkeys for inetd too - oops
Matt Johnston <matt@ucc.asn.au>
parents: 108
diff changeset
391 loadhostkeys();
272
3be7ae2e8dfa Only read /dev/random once when the program starts
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
392
3be7ae2e8dfa Only read /dev/random once when the program starts
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
393 seedrandom();
71
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
394 }
ac96bc733e71 adding inetd mode back from 0.43
Matt Johnston <matt@ucc.asn.au>
parents: 63
diff changeset
395
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
396 /* Set up listening sockets for all the requested ports */
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
397 static size_t listensockets(int *sock, size_t sockcount, int *maxfd) {
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
398
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
399 unsigned int i;
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
400 char* errstring = NULL;
277
044bc108b9b3 * Per-IP connection unauthed connection limits
Matt Johnston <matt@ucc.asn.au>
parents: 258
diff changeset
401 size_t sockpos = 0;
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
402 int nsock;
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
403
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 158
diff changeset
404 TRACE(("listensockets: %d to try\n", svr_opts.portcount))
101
72dc22f56858 Change the way we load keys/ports so we don't print error messages into our
Matt Johnston <matt@ucc.asn.au>
parents: 71
diff changeset
405
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
406 for (i = 0; i < svr_opts.portcount; i++) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
407
434
0aaaf68e97dc Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents: 290
diff changeset
408 TRACE(("listening on '%s:%s'", svr_opts.addresses[i], svr_opts.ports[i]))
101
72dc22f56858 Change the way we load keys/ports so we don't print error messages into our
Matt Johnston <matt@ucc.asn.au>
parents: 71
diff changeset
409
434
0aaaf68e97dc Add -p [address:]port option for binding to addresses, patch from
Matt Johnston <matt@ucc.asn.au>
parents: 290
diff changeset
410 nsock = dropbear_listen(svr_opts.addresses[i], svr_opts.ports[i], &sock[sockpos],
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
411 sockcount - sockpos,
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
412 &errstring, maxfd);
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Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
413
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parents: 30
diff changeset
414 if (nsock < 0) {
101
72dc22f56858 Change the way we load keys/ports so we don't print error messages into our
Matt Johnston <matt@ucc.asn.au>
parents: 71
diff changeset
415 dropbear_log(LOG_WARNING, "Failed listening on '%s': %s",
72dc22f56858 Change the way we load keys/ports so we don't print error messages into our
Matt Johnston <matt@ucc.asn.au>
parents: 71
diff changeset
416 svr_opts.ports[i], errstring);
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
417 m_free(errstring);
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parents: 30
diff changeset
418 continue;
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
419 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
420
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
421 sockpos += nsock;
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
422
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
423 }
62
20563735e8b5 just checkpointing
Matt Johnston <matt@ucc.asn.au>
parents: 30
diff changeset
424 return sockpos;
30
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
425 }