dropbear: dbutil.c annotate

annotate dbutil.c @ 959:f92394f3f332

Merge pull request #2 from iquaba/patch-1 Try without identifying current user

author	Matt Johnston <matt@ucc.asn.au>
date	Wed, 06 Aug 2014 22:04:49 +0800
parents	356a25a108a3
children	db9fa5971d24

rev	line source
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 * Dropbear - a SSH2 server
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * All rights reserved.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * Permission is hereby granted, free of charge, to any person obtaining a copy
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 * of this software and associated documentation files (the "Software"), to deal
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 * in the Software without restriction, including without limitation the rights
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 * copies of the Software, and to permit persons to whom the Software is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 * furnished to do so, subject to the following conditions:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 * The above copyright notice and this permission notice shall be included in
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * all copies or substantial portions of the Software.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
fe6bca95afa7 Makefile.in contains updated files required 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
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 * SOFTWARE.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 * strlcat() is copyright as follows:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 * Copyright (c) 1998 Todd C. Miller <[email protected]>
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 * All rights reserved.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 * Redistribution and use in source and binary forms, with or without
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 * modification, are permitted provided that the following conditions
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 * are met:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 * 1. Redistributions of source code must retain the above copyright
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 * notice, this list of conditions and the following disclaimer.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 * 2. Redistributions in binary form must reproduce the above copyright
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 * notice, this list of conditions and the following disclaimer in the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36 * documentation and/or other materials provided with the distribution.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 * 3. The name of the author may not be used to endorse or promote products
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38 * derived from this software without specific prior written permission.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	51 #include "config.h"
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	52
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	53 #ifdef __linux__
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	54 #define _GNU_SOURCE
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	55 /* To call clock_gettime() directly */
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	56 #include <sys/syscall.h>
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	57 #endif /* __linux */
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	58
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	59 #ifdef HAVE_MACH_MACH_TIME_H
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	60 #include <mach/mach_time.h>
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	61 #include <mach/mach.h>
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	62 #endif
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	63
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 #include "includes.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 #include "buffer.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67 #include "session.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 #include "atomicio.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70 #define MAX_FMT 100
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	72 static void generic_dropbear_exit(int exitcode, const char* format,
614 00eca37e47e8 Add noreturn and format attribute hints for some functions. Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	73 va_list param) ATTRIB_NORETURN;
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	74 static void generic_dropbear_log(int priority, const char* format,
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	75 va_list param);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	76
614 00eca37e47e8 Add noreturn and format attribute hints for some functions. Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	77 void (_dropbear_exit)(int exitcode, const char format, va_list param) ATTRIB_NORETURN
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	78 = generic_dropbear_exit;
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	79 void (_dropbear_log)(int priority, const char format, va_list param)
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	80 = generic_dropbear_log;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81
94 c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	82 #ifdef DEBUG_TRACE
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	83 int debug_trace = 0;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	84 #endif
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	85
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 #ifndef DISABLE_SYSLOG
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 void startsyslog() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 openlog(PROGNAME, LOG_PID, LOG_AUTHPRIV);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 #endif /* DISABLE_SYSLOG */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 /* the "format" string must be <= 100 characters */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95 void dropbear_close(const char* format, ...) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 va_list param;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99 va_start(param, format);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 _dropbear_exit(EXIT_SUCCESS, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105 void dropbear_exit(const char* format, ...) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	106
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107 va_list param;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	109 va_start(param, format);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	110 _dropbear_exit(EXIT_FAILURE, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	111 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	112 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	114 static void generic_dropbear_exit(int exitcode, const char* format,
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	115 va_list param) {
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	116
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	117 char fmtbuf[300];
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	118
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	119 snprintf(fmtbuf, sizeof(fmtbuf), "Exited: %s", format);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	120
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	121 _dropbear_log(LOG_INFO, fmtbuf, param);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	122
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	123 exit(exitcode);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	124 }
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	125
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	126 void fail_assert(const char* expr, const char* file, int line) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	127 dropbear_exit("Failed assertion (%s:%d): `%s'", file, line, expr);
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	128 }
c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	129
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	130 static void generic_dropbear_log(int UNUSED(priority), const char* format,
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	131 va_list param) {
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	132
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	133 char printbuf[1024];
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	134
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	135 vsnprintf(printbuf, sizeof(printbuf), format, param);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	136
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	137 fprintf(stderr, "%s\n", printbuf);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	138
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	139 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 /* this is what can be called to write arbitrary log messages */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 void dropbear_log(int priority, const char* format, ...) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144 va_list param;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 va_start(param, format);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	147 _dropbear_log(priority, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152 #ifdef DEBUG_TRACE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 void dropbear_trace(const char* format, ...) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 va_list param;
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	155 struct timeval tv;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156
94 c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	157 if (!debug_trace) {
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	158 return;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	159 }
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	160
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	161 gettimeofday(&tv, NULL);
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	162
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	163 va_start(param, format);
953 356a25a108a3 Fix some format string warnings Matt Johnston <matt@ucc.asn.au> parents: 952 diff changeset	164 fprintf(stderr, "TRACE (%d) %d.%d: ", getpid(), (int)tv.tv_sec, (int)tv.tv_usec);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	165 vfprintf(stderr, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	166 fprintf(stderr, "\n");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	167 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	168 }
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	169
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	170 void dropbear_trace2(const char* format, ...) {
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	171 static int trace_env = -1;
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	172 va_list param;
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	173 struct timeval tv;
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	174
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	175 if (trace_env == -1) {
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	176 trace_env = getenv("DROPBEAR_TRACE2") ? 1 : 0;
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	177 }
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	178
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	179 if (!(debug_trace && trace_env)) {
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	180 return;
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	181 }
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	182
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	183 gettimeofday(&tv, NULL);
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	184
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	185 va_start(param, format);
953 356a25a108a3 Fix some format string warnings Matt Johnston <matt@ucc.asn.au> parents: 952 diff changeset	186 fprintf(stderr, "TRACE2 (%d) %d.%d: ", getpid(), (int)tv.tv_sec, (int)tv.tv_usec);
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	187 vfprintf(stderr, format, param);
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	188 fprintf(stderr, "\n");
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	189 va_end(param);
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	190 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191 #endif /* DEBUG_TRACE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	192
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	193 void set_sock_nodelay(int sock) {
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	194 int val;
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	195
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	196 /* disable nagle */
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	197 val = 1;
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	198 setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void*)&val, sizeof(val));
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	199 }
80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	200
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	201 void set_sock_priority(int sock, enum dropbear_prio prio) {
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	202
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	203 int iptos_val = 0, so_prio_val = 0, rc;
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	204
629 bdadc7f4b97d Set IPTOS_LOWDELAY for IPv6 too Matt Johnston <matt@ucc.asn.au> parents: 627 diff changeset	205 /* set the TOS bit for either ipv4 or ipv6 */
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	206 #ifdef IPTOS_LOWDELAY
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	207 if (prio == DROPBEAR_PRIO_LOWDELAY) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	208 iptos_val = IPTOS_LOWDELAY;
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	209 } else if (prio == DROPBEAR_PRIO_BULK) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	210 iptos_val = IPTOS_THROUGHPUT;
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	211 }
639 452bcf810e44 Put better #if guards around IPv6 socket options for IPV6_TCLASS and Matt Johnston <matt@ucc.asn.au> parents: 629 diff changeset	212 #if defined(IPPROTO_IPV6) && defined(IPV6_TCLASS)
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	213 rc = setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS, (void*)&iptos_val, sizeof(iptos_val));
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	214 if (rc < 0) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	215 TRACE(("Couldn't set IPV6_TCLASS (%s)", strerror(errno)));
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	216 }
629 bdadc7f4b97d Set IPTOS_LOWDELAY for IPv6 too Matt Johnston <matt@ucc.asn.au> parents: 627 diff changeset	217 #endif
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	218 rc = setsockopt(sock, IPPROTO_IP, IP_TOS, (void*)&iptos_val, sizeof(iptos_val));
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	219 if (rc < 0) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	220 TRACE(("Couldn't set IP_TOS (%s)", strerror(errno)));
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	221 }
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	222 #endif
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	223
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	224 #ifdef SO_PRIORITY
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	225 if (prio == DROPBEAR_PRIO_LOWDELAY) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	226 so_prio_val = TC_PRIO_INTERACTIVE;
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	227 } else if (prio == DROPBEAR_PRIO_BULK) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	228 so_prio_val = TC_PRIO_BULK;
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	229 }
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	230 /* linux specific, sets QoS class. see tc-prio(8) */
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	231 rc = setsockopt(sock, SOL_SOCKET, SO_PRIORITY, (void*) &so_prio_val, sizeof(so_prio_val));
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	232 if (rc < 0)
80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	233 dropbear_log(LOG_WARNING, "Couldn't set SO_PRIORITY (%s)",
80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	234 strerror(errno));
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	235 #endif
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	236
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	237 }
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	238
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	239 /* Listen on address:port.
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	240 * Special cases are address of "" listening on everything,
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	241 * and address of NULL listening on localhost only.
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	242 * Returns the number of sockets bound on success, or -1 on failure. On
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	243 * failure, if errstring wasn't NULL, it'll be a newly malloced error
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	244 * string.*/
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	245 int dropbear_listen(const char* address, const char* port,
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	246 int socks, unsigned int sockcount, char errstring, int maxfd) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	247
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	248 struct addrinfo hints, res = NULL, res0 = NULL;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	249 int err;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	250 unsigned int nsock;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	251 struct linger linger;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	252 int val;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	253 int sock;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	254
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	255 TRACE(("enter dropbear_listen"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	256
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	257 memset(&hints, 0, sizeof(hints));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	258 hints.ai_family = AF_UNSPEC; /* TODO: let them flag v4 only etc */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	259 hints.ai_socktype = SOCK_STREAM;
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	260
433 c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 425 diff changeset	261 /* for calling getaddrinfo:
c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 425 diff changeset	262 address == NULL and !AI_PASSIVE: local loopback
c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 425 diff changeset	263 address == NULL and AI_PASSIVE: all interfaces
c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 425 diff changeset	264 address != NULL: whatever the address says */
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	265 if (!address) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	266 TRACE(("dropbear_listen: local loopback"))
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	267 } else {
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	268 if (address[0] == '\0') {
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	269 TRACE(("dropbear_listen: all interfaces"))
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	270 address = NULL;
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	271 }
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	272 hints.ai_flags = AI_PASSIVE;
dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	273 }
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	274 err = getaddrinfo(address, port, &hints, &res0);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	275
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	276 if (err) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	277 if (errstring != NULL && *errstring == NULL) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	278 int len;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	279 len = 20 + strlen(gai_strerror(err));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	280 errstring = (char)m_malloc(len);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	281 snprintf(*errstring, len, "Error resolving: %s", gai_strerror(err));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	282 }
239 e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	283 if (res0) {
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	284 freeaddrinfo(res0);
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	285 res0 = NULL;
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	286 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	287 TRACE(("leave dropbear_listen: failed resolving"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	288 return -1;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	289 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	290
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	291
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	292 nsock = 0;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	293 for (res = res0; res != NULL && nsock < sockcount;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	294 res = res->ai_next) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	295
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	296 /* Get a socket */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	297 socks[nsock] = socket(res->ai_family, res->ai_socktype,
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	298 res->ai_protocol);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	299
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	300 sock = socks[nsock]; /* For clarity */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	301
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	302 if (sock < 0) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	303 err = errno;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	304 TRACE(("socket() failed"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	305 continue;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	306 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	307
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	308 /* Various useful socket options */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	309 val = 1;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	310 /* set to reuse, quick timeout */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	311 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*) &val, sizeof(val));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	312 linger.l_onoff = 1;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	313 linger.l_linger = 5;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	314 setsockopt(sock, SOL_SOCKET, SO_LINGER, (void*)&linger, sizeof(linger));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	315
639 452bcf810e44 Put better #if guards around IPv6 socket options for IPV6_TCLASS and Matt Johnston <matt@ucc.asn.au> parents: 629 diff changeset	316 #if defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY)
627 7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	317 if (res->ai_family == AF_INET6) {
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	318 int on = 1;
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	319 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY,
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	320 &on, sizeof(on)) == -1) {
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	321 dropbear_log(LOG_WARNING, "Couldn't set IPV6_V6ONLY");
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	322 }
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	323 }
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	324 #endif
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	325
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	326 set_sock_nodelay(sock);
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	327
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	328 if (bind(sock, res->ai_addr, res->ai_addrlen) < 0) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	329 err = errno;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	330 close(sock);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	331 TRACE(("bind(%s) failed", port))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	332 continue;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	333 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	334
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 930 diff changeset	335 if (listen(sock, DROPBEAR_LISTEN_BACKLOG) < 0) {
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	336 err = errno;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	337 close(sock);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	338 TRACE(("listen() failed"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	339 continue;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	340 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	341
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	342 maxfd = MAX(maxfd, sock);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	343
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	344 nsock++;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	345 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	346
239 e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	347 if (res0) {
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	348 freeaddrinfo(res0);
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	349 res0 = NULL;
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	350 }
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	351
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	352 if (nsock == 0) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	353 if (errstring != NULL && *errstring == NULL) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	354 int len;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	355 len = 20 + strlen(strerror(err));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	356 errstring = (char)m_malloc(len);
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	357 snprintf(*errstring, len, "Error listening: %s", strerror(err));
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	358 }
408 28b10e93685c Fix failure-handling in dropbear_listen() when errstring is unset Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	359 TRACE(("leave dropbear_listen: failure, %s", strerror(err)))
28b10e93685c Fix failure-handling in dropbear_listen() when errstring is unset Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	360 return -1;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	361 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	362
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	363 TRACE(("leave dropbear_listen: success, %d socks bound", nsock))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	364 return nsock;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	365 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	366
547 cf376c696dfc Make it compile, update for changes in channel structure. Matt Johnston <matt@ucc.asn.au> parents: 500 diff changeset	367 /* Connect to a given unix socket. The socket is blocking */
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	368 #ifdef ENABLE_CONNECT_UNIX
550 61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	369 int connect_unix(const char* path) {
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	370 struct sockaddr_un addr;
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	371 int fd = -1;
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	372
550 61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	373 memset((void*)&addr, 0x0, sizeof(addr));
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	374 addr.sun_family = AF_UNIX;
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	375 strlcpy(addr.sun_path, path, sizeof(addr.sun_path));
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	376 fd = socket(PF_UNIX, SOCK_STREAM, 0);
550 61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	377 if (fd < 0) {
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	378 TRACE(("Failed to open unix socket"))
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	379 return -1;
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	380 }
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	381 if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	382 TRACE(("Failed to connect to '%s' socket", path))
615 e3ac0a426bd0 Fix FD leak if connect() fails, found by Klocwork Matt Johnston <matt@ucc.asn.au> parents: 614 diff changeset	383 m_close(fd);
550 61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	384 return -1;
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	385 }
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	386 return fd;
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	387 }
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	388 #endif
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	389
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	390 /* Connect via TCP to a host. Connection will try ipv4 or ipv6, will
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	391 * return immediately if nonblocking is set. On failure, if errstring
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	392 * wasn't null, it will be a newly malloced error message */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	393
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	394 /* TODO: maxfd */
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	395 int connect_remote(const char* remotehost, const char* remoteport,
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	396 int nonblocking, char ** errstring) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	397
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	398 struct addrinfo res0 = NULL, res = NULL, hints;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	399 int sock;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	400 int err;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	401
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	402 TRACE(("enter connect_remote"))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	403
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	404 if (errstring != NULL) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	405 *errstring = NULL;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	406 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	407
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	408 memset(&hints, 0, sizeof(hints));
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	409 hints.ai_socktype = SOCK_STREAM;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	410 hints.ai_family = PF_UNSPEC;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	411
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	412 err = getaddrinfo(remotehost, remoteport, &hints, &res0);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	413 if (err) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	414 if (errstring != NULL && *errstring == NULL) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	415 int len;
490 bd2634b03b12 - Improve DNS failure message to include lookup host Matt Johnston <matt@ucc.asn.au> parents: 486 diff changeset	416 len = 100 + strlen(gai_strerror(err));
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	417 errstring = (char)m_malloc(len);
490 bd2634b03b12 - Improve DNS failure message to include lookup host Matt Johnston <matt@ucc.asn.au> parents: 486 diff changeset	418 snprintf(*errstring, len, "Error resolving '%s' port '%s'. %s",
bd2634b03b12 - Improve DNS failure message to include lookup host Matt Johnston <matt@ucc.asn.au> parents: 486 diff changeset	419 remotehost, remoteport, gai_strerror(err));
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	420 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	421 TRACE(("Error resolving: %s", gai_strerror(err)))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	422 return -1;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	423 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	424
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	425 sock = -1;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	426 err = EADDRNOTAVAIL;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	427 for (res = res0; res; res = res->ai_next) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	428
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	429 sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	430 if (sock < 0) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	431 err = errno;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	432 continue;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	433 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	434
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	435 if (nonblocking) {
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	436 setnonblocking(sock);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	437 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	438
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	439 if (connect(sock, res->ai_addr, res->ai_addrlen) < 0) {
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	440 if (errno == EINPROGRESS && nonblocking) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	441 TRACE(("Connect in progress"))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	442 break;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	443 } else {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	444 err = errno;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	445 close(sock);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	446 sock = -1;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	447 continue;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	448 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	449 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	450
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	451 break; /* Success */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	452 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	453
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	454 if (sock < 0 && !(errno == EINPROGRESS && nonblocking)) {
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	455 /* Failed */
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	456 if (errstring != NULL && *errstring == NULL) {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	457 int len;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	458 len = 20 + strlen(strerror(err));
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	459 errstring = (char)m_malloc(len);
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	460 snprintf(*errstring, len, "Error connecting: %s", strerror(err));
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	461 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	462 TRACE(("Error connecting: %s", strerror(err)))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	463 } else {
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	464 /* Success */
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	465 set_sock_nodelay(sock);
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	466 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	467
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	468 freeaddrinfo(res0);
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	469 if (sock > 0 && errstring != NULL && *errstring != NULL) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	470 m_free(*errstring);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	471 }
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	472
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	473 TRACE(("leave connect_remote: sock %d\n", sock))
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	474 return sock;
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	475 }
0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	476
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	477 /* Sets up a pipe for a, returning three non-blocking file descriptors
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	478 * and the pid. exec_fn is the function that will actually execute the child process,
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	479 * it will be run after the child has fork()ed, and is passed exec_data.
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	480 * If ret_errfd == NULL then stderr will not be captured.
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	481 * ret_pid can be passed as NULL to discard the pid. */
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	482 int spawn_command(void(exec_fn)(void user_data), void *exec_data,
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	483 int ret_writefd, int ret_readfd, int ret_errfd, pid_t ret_pid) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	484 int infds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	485 int outfds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	486 int errfds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	487 pid_t pid;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	488
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	489 const int FDIN = 0;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	490 const int FDOUT = 1;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	491
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	492 /* redirect stdin/stdout/stderr */
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	493 if (pipe(infds) != 0) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	494 return DROPBEAR_FAILURE;
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	495 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	496 if (pipe(outfds) != 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	497 return DROPBEAR_FAILURE;
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	498 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	499 if (ret_errfd && pipe(errfds) != 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	500 return DROPBEAR_FAILURE;
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	501 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	502
667 fc7ae88e63b3 Rename HAVE_FORK to USE_VFORK Matt Johnston <matt@ucc.asn.au> parents: 666 diff changeset	503 #ifdef USE_VFORK
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	504 pid = vfork();
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	505 #else
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	506 pid = fork();
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	507 #endif
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	508
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	509 if (pid < 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	510 return DROPBEAR_FAILURE;
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	511 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	512
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	513 if (!pid) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	514 /* child */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	515
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	516 TRACE(("back to normal sigchld"))
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	517 /* Revert to normal sigchld handling */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	518 if (signal(SIGCHLD, SIG_DFL) == SIG_ERR) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	519 dropbear_exit("signal() error");
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	520 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	521
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	522 /* redirect stdin/stdout */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	523
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	524 if ((dup2(infds[FDIN], STDIN_FILENO) < 0) \|\|
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	525 (dup2(outfds[FDOUT], STDOUT_FILENO) < 0) \|\|
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	526 (ret_errfd && dup2(errfds[FDOUT], STDERR_FILENO) < 0)) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	527 TRACE(("leave noptycommand: error redirecting FDs"))
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	528 dropbear_exit("Child dup2() failure");
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	529 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	530
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	531 close(infds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	532 close(infds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	533 close(outfds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	534 close(outfds[FDOUT]);
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	535 if (ret_errfd)
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	536 {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	537 close(errfds[FDIN]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	538 close(errfds[FDOUT]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	539 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	540
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	541 exec_fn(exec_data);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	542 /* not reached */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	543 return DROPBEAR_FAILURE;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	544 } else {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	545 /* parent */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	546 close(infds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	547 close(outfds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	548
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	549 setnonblocking(outfds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	550 setnonblocking(infds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	551
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	552 if (ret_errfd) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	553 close(errfds[FDOUT]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	554 setnonblocking(errfds[FDIN]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	555 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	556
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	557 if (ret_pid) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	558 *ret_pid = pid;
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	559 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	560
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	561 *ret_writefd = infds[FDOUT];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	562 *ret_readfd = outfds[FDIN];
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	563 if (ret_errfd) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	564 *ret_errfd = errfds[FDIN];
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	565 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	566 return DROPBEAR_SUCCESS;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	567 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	568 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	569
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	570 /* Runs a command with "sh -c". Will close FDs (except stdin/stdout/stderr) and
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	571 * re-enabled SIGPIPE. If cmd is NULL, will run a login shell.
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	572 */
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	573 void run_shell_command(const char* cmd, unsigned int maxfd, char* usershell) {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	574 char * argv[4];
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	575 char * baseshell = NULL;
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	576 unsigned int i;
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	577
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	578 baseshell = basename(usershell);
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	579
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	580 if (cmd != NULL) {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	581 argv[0] = baseshell;
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	582 } else {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	583 /* a login shell should be "-bash" for "/bin/bash" etc */
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	584 int len = strlen(baseshell) + 2; /* 2 for "-" */
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	585 argv[0] = (char*)m_malloc(len);
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	586 snprintf(argv[0], len, "-%s", baseshell);
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	587 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	588
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	589 if (cmd != NULL) {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	590 argv[1] = "-c";
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	591 argv[2] = (char*)cmd;
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	592 argv[3] = NULL;
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	593 } else {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	594 /* construct a shell of the form "-bash" etc */
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	595 argv[1] = NULL;
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	596 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	597
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	598 /* Re-enable SIGPIPE for the executed process */
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	599 if (signal(SIGPIPE, SIG_DFL) == SIG_ERR) {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	600 dropbear_exit("signal() error");
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	601 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	602
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	603 /* close file descriptors except stdin/stdout/stderr
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	604 * Need to be sure FDs are closed here to avoid reading files as root */
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	605 for (i = 3; i <= maxfd; i++) {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	606 m_close(i);
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	607 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	608
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	609 execv(usershell, argv);
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	610 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	611
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	612 void get_socket_address(int fd, char local_host, char local_port,
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	613 char remote_host, char remote_port, int host_lookup)
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	614 {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	615 struct sockaddr_storage addr;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	616 socklen_t addrlen;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	617
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	618 if (local_host \|\| local_port) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	619 addrlen = sizeof(addr);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	620 if (getsockname(fd, (struct sockaddr*)&addr, &addrlen) < 0) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	621 dropbear_exit("Failed socket address: %s", strerror(errno));
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	622 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	623 getaddrstring(&addr, local_host, local_port, host_lookup);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	624 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	625 if (remote_host \|\| remote_port) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	626 addrlen = sizeof(addr);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	627 if (getpeername(fd, (struct sockaddr*)&addr, &addrlen) < 0) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	628 dropbear_exit("Failed socket address: %s", strerror(errno));
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	629 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	630 getaddrstring(&addr, remote_host, remote_port, host_lookup);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	631 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	632 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	633
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	634 /* Return a string representation of the socket address passed. The return
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	635 * value is allocated with malloc() */
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	636 void getaddrstring(struct sockaddr_storage* addr,
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	637 char ret_host, char ret_port,
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	638 int host_lookup) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	639
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	640 char host[NI_MAXHOST+1], serv[NI_MAXSERV+1];
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	641 unsigned int len;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	642 int ret;
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	643
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	644 int flags = NI_NUMERICSERV \| NI_NUMERICHOST;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	645
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	646 #ifndef DO_HOST_LOOKUP
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	647 host_lookup = 0;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	648 #endif
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	649
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	650 if (host_lookup) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	651 flags = NI_NUMERICSERV;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	652 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	653
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	654 len = sizeof(struct sockaddr_storage);
160 7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	655 /* Some platforms such as Solaris 8 require that len is the length
335 e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	656 * of the specific structure. Some older linux systems (glibc 2.1.3
e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	657 * such as debian potato) have sockaddr_storage.__ss_family instead
e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	658 * but we'll ignore them */
e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	659 #ifdef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
160 7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	660 if (addr->ss_family == AF_INET) {
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	661 len = sizeof(struct sockaddr_in);
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	662 }
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	663 #ifdef AF_INET6
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	664 if (addr->ss_family == AF_INET6) {
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	665 len = sizeof(struct sockaddr_in6);
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	666 }
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	667 #endif
335 e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	668 #endif
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	669
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	670 ret = getnameinfo((struct sockaddr*)addr, len, host, sizeof(host)-1,
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	671 serv, sizeof(serv)-1, flags);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	672
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	673 if (ret != 0) {
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	674 if (host_lookup) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	675 /* On some systems (Darwin does it) we get EINTR from getnameinfo
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	676 * somehow. Eew. So we'll just return the IP, since that doesn't seem
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	677 * to exhibit that behaviour. */
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	678 getaddrstring(addr, ret_host, ret_port, 0);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	679 return;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	680 } else {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	681 /* if we can't do a numeric lookup, something's gone terribly wrong */
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	682 dropbear_exit("Failed lookup: %s", gai_strerror(ret));
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	683 }
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	684 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	685
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	686 if (ret_host) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	687 *ret_host = m_strdup(host);
160 7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	688 }
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	689 if (ret_port) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	690 *ret_port = m_strdup(serv);
160 7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	691 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	692 }
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	693
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	694 #ifdef DEBUG_TRACE
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 173 diff changeset	695 void printhex(const char * label, const unsigned char * buf, int len) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	696
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	697 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	698
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 173 diff changeset	699 fprintf(stderr, "%s\n", label);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	700 for (i = 0; i < len; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	701 fprintf(stderr, "%02x", buf[i]);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	702 if (i % 16 == 15) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	703 fprintf(stderr, "\n");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	704 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	705 else if (i % 2 == 1) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	706 fprintf(stderr, " ");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	707 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	708 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	709 fprintf(stderr, "\n");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	710 }
764 2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	711
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	712 void printmpint(const char label, mp_int mp) {
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	713 buffer *buf = buf_new(1000);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	714 buf_putmpint(buf, mp);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	715 printhex(label, buf->data, buf->len);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	716 buf_free(buf);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	717
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	718 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	719 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	720
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	721 /* Strip all control characters from text (a null-terminated string), except
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	722 * for '\n', '\r' and '\t'.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	723 * The result returned is a newly allocated string, this must be free()d after
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	724 * use */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	725 char * stripcontrol(const char * text) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	726
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	727 char * ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	728 int len, pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	729 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	730
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	731 len = strlen(text);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	732 ret = m_malloc(len+1);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	733
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	734 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	735 for (i = 0; i < len; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	736 if ((text[i] <= '~' && text[i] >= ' ') /* normal printable range */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	737 \|\| text[i] == '\n' \|\| text[i] == '\r' \|\| text[i] == '\t') {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	738 ret[pos] = text[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	739 pos++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	740 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	741 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	742 ret[pos] = 0x0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	743 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	744 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	745
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	746
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	747 /* reads the contents of filename into the buffer buf, from the current
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	748 * position, either to the end of the file, or the buffer being full.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	749 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	750 int buf_readfile(buffer* buf, const char* filename) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	751
357 9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	752 int fd = -1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	753 int len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	754 int maxlen;
358 e81d3bc1dc78 Forgot variable declaration. Matt Johnston <matt@ucc.asn.au> parents: 357 diff changeset	755 int ret = DROPBEAR_FAILURE;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	756
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	757 fd = open(filename, O_RDONLY);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	758
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	759 if (fd < 0) {
357 9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	760 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	761 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	762
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	763 do {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	764 maxlen = buf->size - buf->pos;
357 9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	765 len = read(fd, buf_getwriteptr(buf, maxlen), maxlen);
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	766 if (len < 0) {
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	767 if (errno == EINTR \|\| errno == EAGAIN) {
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	768 continue;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	769 }
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	770 goto out;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	771 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	772 buf_incrwritepos(buf, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	773 } while (len < maxlen && len > 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	774
357 9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	775 ret = DROPBEAR_SUCCESS;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	776
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	777 out:
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	778 if (fd >= 0) {
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	779 m_close(fd);
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	780 }
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	781 return ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	782 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	783
51 095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	784 /* get a line from the file into buffer in the style expected for an
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	785 * authkeys file.
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	786 * Will return DROPBEAR_SUCCESS if data is read, or DROPBEAR_FAILURE on EOF.*/
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	787 /* Only used for ~/.ssh/known_hosts and ~/.ssh/authorized_keys */
68 eee77ac31ccc cleaning up the pubkey defines Matt Johnston <matt@ucc.asn.au> parents: 64 diff changeset	788 #if defined(DROPBEAR_CLIENT) \|\| defined(ENABLE_SVR_PUBKEY_AUTH)
51 095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	789 int buf_getline(buffer * line, FILE * authfile) {
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	790
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	791 int c = EOF;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	792
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	793 buf_setpos(line, 0);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	794 buf_setlen(line, 0);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	795
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	796 while (line->pos < line->size) {
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	797
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	798 c = fgetc(authfile); /getc() is weird with some uClibc systems/
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	799 if (c == EOF \|\| c == '\n' \|\| c == '\r') {
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	800 goto out;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	801 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	802
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	803 buf_putbyte(line, (unsigned char)c);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	804 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	805
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	806 TRACE(("leave getauthline: line too long"))
51 095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	807 /* We return success, but the line length will be zeroed - ie we just
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	808 * ignore that line */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	809 buf_setlen(line, 0);
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	810
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	811 out:
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	812
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	813
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	814 /* if we didn't read anything before EOF or error, exit */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	815 if (c == EOF && line->pos == 0) {
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	816 return DROPBEAR_FAILURE;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	817 } else {
117 e0acad552a92 Read the last line of a file without a finishing '\n' correctly Matt Johnston <matt@ucc.asn.au> parents: 109 diff changeset	818 buf_setpos(line, 0);
51 095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	819 return DROPBEAR_SUCCESS;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	820 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	821
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	822 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	823 #endif
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	824
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	825 /* make sure that the socket closes */
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	826 void m_close(int fd) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	827
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	828 if (fd == -1) {
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	829 return;
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	830 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	831
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	832 int val;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	833 do {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	834 val = close(fd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	835 } while (val < 0 && errno == EINTR);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	837 if (val < 0 && errno != EBADF) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	838 /* Linux says EIO can happen */
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	839 dropbear_exit("Error closing fd %d, %s", fd, strerror(errno));
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	840 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	841 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	842
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	843 void * m_malloc(size_t size) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	844
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	845 void* ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	846
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	847 if (size == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	848 dropbear_exit("m_malloc failed");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	849 }
123 a0db9a23f6d4 calloc memory rather than mallocing it - can't hurt too much, and is Matt Johnston <matt@ucc.asn.au> parents: 117 diff changeset	850 ret = calloc(1, size);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	851 if (ret == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	852 dropbear_exit("m_malloc failed");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	853 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	854 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	855
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	856 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	857
11 f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	858 void * m_strdup(const char * str) {
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	859 char* ret;
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	860
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	861 ret = strdup(str);
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	862 if (ret == NULL) {
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	863 dropbear_exit("m_strdup failed");
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	864 }
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	865 return ret;
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	866 }
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	867
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	868 void * m_realloc(void* ptr, size_t size) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	869
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	870 void *ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	871
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	872 if (size == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	873 dropbear_exit("m_realloc failed");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	874 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	875 ret = realloc(ptr, size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	876 if (ret == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	877 dropbear_exit("m_realloc failed");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	878 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	879 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	880 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	881
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	882 /* Clear the data, based on the method in David Wheeler's
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	883 * "Secure Programming for Linux and Unix HOWTO" */
161 b9d3f725e00b 0.44 release changes Matt Johnston <matt@ucc.asn.au> parents: 160 diff changeset	884 /* Beware of calling this from within dbutil.c - things might get
b9d3f725e00b 0.44 release changes Matt Johnston <matt@ucc.asn.au> parents: 160 diff changeset	885 * optimised away */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	886 void m_burn(void *data, unsigned int len) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	887 volatile char *p = data;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	888
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	889 if (data == NULL)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	890 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	891 while (len--) {
655 76e780c74a5e - Burn buffers to 0x00 instead Matt Johnston <matt@ucc.asn.au> parents: 639 diff changeset	892 *p++ = 0x0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	893 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	894 }
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	895
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	896
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	897 void setnonblocking(int fd) {
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	898
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	899 TRACE(("setnonblocking: %d", fd))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	900
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	901 if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
173 257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	902 if (errno == ENODEV) {
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	903 /* Some devices (like /dev/null redirected in)
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	904 * can't be set to non-blocking */
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	905 TRACE(("ignoring ENODEV for setnonblocking"))
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	906 } else {
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	907 dropbear_exit("Couldn't set nonblocking");
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	908 }
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	909 }
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	910 TRACE(("leave setnonblocking"))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	911 }
425 1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	912
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	913 void disallow_core() {
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	914 struct rlimit lim;
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	915 lim.rlim_cur = lim.rlim_max = 0;
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	916 setrlimit(RLIMIT_CORE, &lim);
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	917 }
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	918
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	919 /* Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE, with the result in val /
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	920 int m_str_to_uint(const char* str, unsigned int *val) {
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	921 unsigned long l;
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	922 errno = 0;
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	923 l = strtoul(str, NULL, 10);
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	924 /* The c99 spec doesn't actually seem to define EINVAL, but most platforms
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	925 * I've looked at mention it in their manpage */
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	926 if ((l == 0 && errno == EINVAL)
30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	927 \|\| (l == ULONG_MAX && errno == ERANGE)
30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	928 \|\| (l > UINT_MAX)) {
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	929 return DROPBEAR_FAILURE;
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	930 } else {
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	931 *val = l;
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	932 return DROPBEAR_SUCCESS;
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	933 }
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	934 }
817 a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	935
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	936 int constant_time_memcmp(const void* a, const void *b, size_t n)
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	937 {
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	938 const char xa = a, xb = b;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	939 uint8_t c = 0;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	940 size_t i;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	941 for (i = 0; i < n; i++)
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	942 {
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	943 c \|= (xa[i] ^ xb[i]);
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	944 }
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	945 return c;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	946 }
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	947
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	948 #if defined(__linux__) && defined(SYS_clock_gettime)
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	949 /* CLOCK_MONOTONIC_COARSE was added in Linux 2.6.32 but took a while to
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	950 reach userspace include headers */
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	951 #ifndef CLOCK_MONOTONIC_COARSE
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	952 #define CLOCK_MONOTONIC_COARSE 6
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	953 #endif
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	954 static clockid_t get_linux_clock_source() {
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	955 struct timespec ts;
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	956 if (syscall(SYS_clock_gettime, CLOCK_MONOTONIC_COARSE, &ts) == 0) {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	957 return CLOCK_MONOTONIC_COARSE;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	958 }
953 356a25a108a3 Fix some format string warnings Matt Johnston <matt@ucc.asn.au> parents: 952 diff changeset	959
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	960 if (syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &ts) == 0) {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	961 return CLOCK_MONOTONIC;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	962 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	963 return -1;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	964 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	965 #endif
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	966
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	967 time_t monotonic_now() {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	968 #if defined(__linux__) && defined(SYS_clock_gettime)
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	969 static clockid_t clock_source = -2;
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	970
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	971 if (clock_source == -2) {
953 356a25a108a3 Fix some format string warnings Matt Johnston <matt@ucc.asn.au> parents: 952 diff changeset	972 /* First run, find out which one works.
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	973 -1 will fall back to time() */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	974 clock_source = get_linux_clock_source();
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	975 }
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	976
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	977 if (clock_source >= 0) {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	978 struct timespec ts;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	979 if (syscall(SYS_clock_gettime, clock_source, &ts) != 0) {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	980 /* Intermittent clock failures should not happen */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	981 dropbear_exit("Clock broke");
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	982 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	983 return ts.tv_sec;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	984 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	985 #endif /* linux clock_gettime */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	986
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	987 #if defined(HAVE_MACH_ABSOLUTE_TIME)
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	988 /* OS X, see https://developer.apple.com/library/mac/qa/qa1398/_index.html */
930 8f04e36622c0 Fix monotonic_now() on OS X Matt Johnston <matt@ucc.asn.au> parents: 928 diff changeset	989 static mach_timebase_info_data_t timebase_info;
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	990 if (timebase_info.denom == 0) {
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	991 mach_timebase_info(&timebase_info);
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	992 }
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	993 return mach_absolute_time() * timebase_info.numer / timebase_info.denom
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	994 / 1e9;
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	995 #endif /* osx mach_absolute_time */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	996
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	997 /* Fallback for everything else - this will sometimes go backwards */
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	998 return time(NULL);
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	999 }
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	1000

Mercurial > dropbear

annotate dbutil.c @ 959:f92394f3f332