dropbear: svr-main.c annotate

annotate svr-main.c @ 425:1afa503e33f5

Disable core dumps

author	Matt Johnston <matt@ucc.asn.au>
date	Mon, 12 Feb 2007 10:43:44 +0000
parents	b66a00272a90
children	c216212001fc

rev	line source
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /*
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 * Dropbear - a SSH2 server
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
290 94ee16f5b8a8 0.48 progress Matt Johnston <matt@ucc.asn.au> parents: 279 diff changeset	4 * Copyright (c) 2002-2006 Matt Johnston
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * All rights reserved.
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 *
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * Permission is hereby granted, free of charge, to any person obtaining a copy
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 * of this software and associated documentation files (the "Software"), to deal
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 * in the Software without restriction, including without limitation the rights
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 * copies of the Software, and to permit persons to whom the Software is
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 * furnished to do so, subject to the following conditions:
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 *
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 * The above copyright notice and this permission notice shall be included in
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * all copies or substantial portions of the Software.
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 *
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 * SOFTWARE. */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 #include "includes.h"
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 #include "dbutil.h"
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 #include "session.h"
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 #include "buffer.h"
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 #include "signkey.h"
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 #include "runopts.h"
298 7dad470ad4aa minor cleanups for some warnings Matt Johnston <matt@ucc.asn.au> parents: 290 diff changeset	31 #include "random.h"
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	33 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	34 static void sigchld_handler(int dummy);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 static void sigsegv_handler(int);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36 static void sigintterm_handler(int fish);
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 113 diff changeset	37 #ifdef INETD_MODE
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	38 static void main_inetd();
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 113 diff changeset	39 #endif
8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 113 diff changeset	40 #ifdef NON_INETD_MODE
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	41 static void main_noinetd();
156 8c2b3506f112 Rearrange preprocessor parts so that compilation with various options Matt Johnston <matt@ucc.asn.au> parents: 113 diff changeset	42 #endif
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	43 static void commonsetup();
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 #if defined(DBMULTI_dropbear) \|\| !defined(DROPBEAR_MULTI)
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 #if defined(DBMULTI_dropbear) && defined(DROPBEAR_MULTI)
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 int dropbear_main(int argc, char ** argv)
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 #else
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 int main(int argc, char ** argv)
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 #endif
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51 {
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	52 _dropbear_exit = svr_dropbear_exit;
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	53 _dropbear_log = svr_dropbear_log;
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	54
425 1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 379 diff changeset	55 disallow_core();
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 379 diff changeset	56
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	57 /* get commandline options */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	58 svr_getopts(argc, argv);
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	59
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	60 #ifdef INETD_MODE
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	61 /* service program mode */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	62 if (svr_opts.inetdmode) {
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	63 main_inetd();
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	64 /* notreached */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	65 }
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	66 #endif
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	67
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	68 #ifdef NON_INETD_MODE
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	69 main_noinetd();
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	70 /* notreached */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	71 #endif
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	72
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	73 dropbear_exit("Compiled without normal mode, can't run without -i\n");
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	74 return -1;
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	75 }
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	76 #endif
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	77
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	78 #ifdef INETD_MODE
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	79 static void main_inetd() {
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	80
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	81 struct sockaddr_storage remoteaddr;
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	82 socklen_t remoteaddrlen;
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	83 char * addrstring = NULL;
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	84
272 3be7ae2e8dfa Only read /dev/random once when the program starts Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	85 /* Set up handlers, syslog, seed random */
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	86 commonsetup();
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	87
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	88 remoteaddrlen = sizeof(remoteaddr);
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	89 if (getpeername(0, (struct sockaddr*)&remoteaddr, &remoteaddrlen) < 0) {
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	90 dropbear_exit("Unable to getpeername: %s", strerror(errno));
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	91 }
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	92
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	93 /* In case our inetd was lax in logging source addresses */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	94 addrstring = getaddrstring(&remoteaddr, 1);
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	95 dropbear_log(LOG_INFO, "Child connection from %s", addrstring);
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	96
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	97 /* Don't check the return value - it may just fail since inetd has
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	98 * already done setsid() after forking (xinetd on Darwin appears to do
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	99 * this */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	100 setsid();
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	101
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	102 /* Start service program
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	103 * -1 is a dummy childpipe, just something we can close() without
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	104 * mattering. */
158 364a75cfebab Log the IP along with auth success/fail attempts Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	105 svr_session(0, -1, getaddrhostname(&remoteaddr), addrstring);
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	106
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	107 /* notreached */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	108 }
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	109 #endif /* INETD_MODE */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	110
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	111 #ifdef NON_INETD_MODE
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	112 void main_noinetd() {
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113 fd_set fds;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	114 struct timeval seltimeout;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	115 unsigned int i, j;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	116 int val;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	117 int maxsock = -1;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	118 int listensocks[MAX_LISTEN_ADDR];
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	119 size_t listensockcount = 0;
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	120 FILE *pidfile = NULL;
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	121
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	122 int childpipes[MAX_UNAUTH_CLIENTS];
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	123 char * preauth_addrs[MAX_UNAUTH_CLIENTS];
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	124
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	125 int childsock;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	126 int childpipe[2];
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	127
379 b66a00272a90 Load hostkeys before daemon(), since daemon()'s chdir("/") will prevent us Matt Johnston <matt@ucc.asn.au> parents: 323 diff changeset	128 // Note: commonsetup() must happen before we daemon()ise. Otherwise
b66a00272a90 Load hostkeys before daemon(), since daemon()'s chdir("/") will prevent us Matt Johnston <matt@ucc.asn.au> parents: 323 diff changeset	129 // daemon() will chdir("/"), and we won't be able to find local-dir hostkeys.
b66a00272a90 Load hostkeys before daemon(), since daemon()'s chdir("/") will prevent us Matt Johnston <matt@ucc.asn.au> parents: 323 diff changeset	130 commonsetup();
b66a00272a90 Load hostkeys before daemon(), since daemon()'s chdir("/") will prevent us Matt Johnston <matt@ucc.asn.au> parents: 323 diff changeset	131
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	132 /* fork */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	133 if (svr_opts.forkbg) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	134 int closefds = 0;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	135 #ifndef DEBUG_TRACE
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	136 if (!svr_opts.usingsyslog) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	137 closefds = 1;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	138 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	139 #endif
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140 if (daemon(0, closefds) < 0) {
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	141 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	142 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145 /* 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	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 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	148 } else {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 dropbear_log(LOG_INFO, "Not forking");
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150 }
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 /* 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	153 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	154 if (pidfile) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155 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	156 fclose(pidfile);
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
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	159 /* sockets to identify pre-authenticated clients */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	160 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	161 childpipes[i] = -1;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	162 }
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	163 bzero(preauth_addrs, sizeof(preauth_addrs));
30 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 /* Set up the listening sockets */
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	166 listensockcount = listensockets(listensocks, MAX_LISTEN_ADDR, &maxsock);
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	167 if (listensockcount == 0)
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	168 {
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	169 dropbear_exit("No listening ports available.");
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	170 }
30 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 seltimeout.tv_sec = 60;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	178 seltimeout.tv_usec = 0;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	179
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	180 /* listening sockets */
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	181 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	182 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	183 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	185 /* pre-authentication clients */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	186 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	187 if (childpipes[i] >= 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	188 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	189 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	190 }
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
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 val = select(maxsock+1, &fds, NULL, NULL, &seltimeout);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195 if (exitflag) {
323 3bfbe95f9a14 Add -P pidfile patch from Swen Schillig Matt Johnston <matt@ucc.asn.au> parents: 298 diff changeset	196 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	197 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	198 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	199
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	200 if (val == 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	201 /* timeout reached */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	202 continue;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	203 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	204
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	205 if (val < 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	206 if (errno == EINTR) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	207 continue;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	208 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	209 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	210 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	211
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	212 /* 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	213 * 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	214 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	215 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	216 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	217 childpipes[i] = -1;
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	218 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	219 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	220 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	221
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	222 /* 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	223 for (i = 0; i < listensockcount; i++) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	224
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	225 struct sockaddr_storage remoteaddr;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	226 socklen_t remoteaddrlen = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	227 size_t num_unauthed_for_addr = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	228 size_t num_unauthed_total = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	229 char * remote_addr_str = NULL;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	230 pid_t fork_ret = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	231 size_t conn_idx = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	232
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	233 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	234 continue;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	235
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	236 remoteaddrlen = sizeof(remoteaddr);
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	237 childsock = accept(listensocks[i],
dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	238 (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	239
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	240 if (childsock < 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	241 /* accept failed */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	242 continue;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	243 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	244
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	245 /* 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	246 remote_addr_str = getaddrstring(&remoteaddr, 0);
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	247
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	248 num_unauthed_for_addr = 0;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	249 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	250 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	251 if (childpipes[j] >= 0) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	252 num_unauthed_total++;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	253 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	254 num_unauthed_for_addr++;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	255 }
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	256 } else {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	257 /* a free slot */
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	258 conn_idx = j;
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	259 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	260 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	261
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	262 if (num_unauthed_total >= MAX_UNAUTH_CLIENTS
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	263 \|\| 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	264 goto out;
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	265 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	266
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	267 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	268 TRACE(("error creating child pipe"))
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	269 goto out;
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	270 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	271
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	272 fork_ret = fork();
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	273 if (fork_ret < 0) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	274 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	275 goto out;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	276
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	277 } else if (fork_ret > 0) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	278
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	279 /* parent */
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	280 childpipes[conn_idx] = childpipe[0];
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	281 m_close(childpipe[1]);
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	282 preauth_addrs[conn_idx] = remote_addr_str;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	283 remote_addr_str = NULL;
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	284
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	285 } else {
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	286
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	287 /* child */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	288 char * addrstring = NULL;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	289 #ifdef DEBUG_FORKGPROF
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	290 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	291 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	292 #endif /* DEBUG_FORKGPROF */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	293
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	294 m_free(remote_addr_str);
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	295 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	296 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	297
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	298 if (setsid() < 0) {
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	299 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	300 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	301
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	302 /* make sure we close sockets */
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	303 for (i = 0; i < listensockcount; i++) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	304 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	305 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	306
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	307 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	308
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	309 /* start the session */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	310 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	311 getaddrhostname(&remoteaddr),
364a75cfebab Log the IP along with auth success/fail attempts Matt Johnston <matt@ucc.asn.au> parents: 156 diff changeset	312 addrstring);
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	313 /* don't return */
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 165 diff changeset	314 dropbear_assert(0);
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	315 }
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	316
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	317 out:
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	318 /* 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	319 m_close(childsock);
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	320 if (remote_addr_str) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	321 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	322 }
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 } /* for(;;) loop */
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 /* don't reach here */
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	327 }
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	328 #endif /* NON_INETD_MODE */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	329
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	330
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	331 /* catch + reap zombie children */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 101 diff changeset	332 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	333 struct sigaction sa_chld;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	334
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	335 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	336
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	337 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	338 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	339 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	340 dropbear_exit("signal() error");
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	341 }
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 /* catch any segvs */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 101 diff changeset	345 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	346 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	347 "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	348 exit(EXIT_FAILURE);
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	349 }
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 /* catch ctrl-c or sigterm */
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 101 diff changeset	352 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	353
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	354 exitflag = 1;
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	355 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	356
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	357 /* 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	358 static void commonsetup() {
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	359
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	360 struct sigaction sa_chld;
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	361 #ifndef DISABLE_SYSLOG
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	362 if (svr_opts.usingsyslog) {
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	363 startsyslog();
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	364 }
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	365 #endif
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	366
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	367 /* set up cleanup handler */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	368 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	369 #ifndef DEBUG_VALGRIND
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	370 signal(SIGTERM, sigintterm_handler) == SIG_ERR \|\|
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	371 #endif
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	372 signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	373 dropbear_exit("signal() error");
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	374 }
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	375
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	376 /* catch and reap zombie children */
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	377 sa_chld.sa_handler = sigchld_handler;
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	378 sa_chld.sa_flags = SA_NOCLDSTOP;
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	379 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	380 dropbear_exit("signal() error");
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	381 }
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	382 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	383 dropbear_exit("signal() error");
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	384 }
113 775c6cbfe995 Load the hostkeys for inetd too - oops Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	385
775c6cbfe995 Load the hostkeys for inetd too - oops Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	386 /* 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	387 * 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	388 loadhostkeys();
272 3be7ae2e8dfa Only read /dev/random once when the program starts Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	389
3be7ae2e8dfa Only read /dev/random once when the program starts Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	390 seedrandom();
71 ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	391 }
ac96bc733e71 adding inetd mode back from 0.43 Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	392
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	393 /* 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	394 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	395
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	396 unsigned int i;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	397 char* errstring = NULL;
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	398 size_t sockpos = 0;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	399 int nsock;
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	400
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	401 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	402
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	403 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	404
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	405 TRACE(("listening on '%s'", 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	406
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 241 diff changeset	407 nsock = dropbear_listen("", svr_opts.ports[i], &sock[sockpos],
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	408 sockcount - sockpos,
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	409 &errstring, maxfd);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	410
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	411 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	412 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	413 svr_opts.ports[i], errstring);
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	414 m_free(errstring);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	415 continue;
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	416 }
223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	417
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 30 diff changeset	418 sockpos += nsock;
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 return sockpos;
30 223b0f5f8dce Switching to the magical new Makefile, and new dbmulti style Matt Johnston <matt@ucc.asn.au> parents: diff changeset	422 }

Mercurial > dropbear

annotate svr-main.c @ 425:1afa503e33f5