dropbear: dbutil.c annotate

annotate dbutil.c @ 1938:77bc00dcc19f default tip main master

Bump version to 2022.82

author	Matt Johnston <matt@ucc.asn.au>
date	Fri, 01 Apr 2022 14:43:27 +0800
parents	83b6a47759a8
children

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
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1283 diff changeset	82 #if DEBUG_TRACE
94 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
1211 6ecc133fb2ee Allow setting syslog identifier via startsyslog(). Konstantin Tokarev <ktokarev@smartlabs.tv> parents: 1134 diff changeset	87 void startsyslog(const char *ident) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88
1211 6ecc133fb2ee Allow setting syslog identifier via startsyslog(). Konstantin Tokarev <ktokarev@smartlabs.tv> parents: 1134 diff changeset	89 openlog(ident, LOG_PID, LOG_AUTHPRIV);
4 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
1558 2f64cb3d3007 - #if not #ifdef for DROPBEAR_FUZZ Matt Johnston <matt@ucc.asn.au> parents: 1511 diff changeset	123 #if DROPBEAR_FUZZ
1385 6c92e97553f1 Add a flag whether to longjmp, missed that last commit Matt Johnston <matt@ucc.asn.au> parents: 1383 diff changeset	124 if (fuzz.do_jmp) {
1369 ddfcadca3c4c fuzzer-pubkey Matt Johnston <matt@ucc.asn.au> parents: 1361 diff changeset	125 longjmp(fuzz.jmp, 1);
ddfcadca3c4c fuzzer-pubkey Matt Johnston <matt@ucc.asn.au> parents: 1361 diff changeset	126 }
ddfcadca3c4c fuzzer-pubkey Matt Johnston <matt@ucc.asn.au> parents: 1361 diff changeset	127 #endif
ddfcadca3c4c fuzzer-pubkey Matt Johnston <matt@ucc.asn.au> parents: 1361 diff changeset	128
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	129 exit(exitcode);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	130 }
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	131
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	132 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	133 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	134 }
c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	135
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	136 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	137 va_list param) {
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 char printbuf[1024];
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	140
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	141 vsnprintf(printbuf, sizeof(printbuf), format, param);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	142
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	143 fprintf(stderr, "%s\n", printbuf);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	144
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	145 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	147 /* 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	148 void dropbear_log(int priority, const char* format, ...) {
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 va_list param;
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 va_start(param, format);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	153 _dropbear_log(priority, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	154 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	155 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	156
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	157
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	158 #if DEBUG_TRACE
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	159
1021 24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	160 static double debug_start_time = -1;
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	161
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	162 void debug_start_net()
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	163 {
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	164 if (getenv("DROPBEAR_DEBUG_NET_TIMESTAMP"))
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	165 {
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	166 /* Timestamps start from first network activity */
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	167 struct timeval tv;
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	168 gettimeofday(&tv, NULL);
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	169 debug_start_time = tv.tv_sec + (tv.tv_usec / 1000000.0);
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	170 TRACE(("Resetting Dropbear TRACE timestamps"))
1021 24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	171 }
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	172 }
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	173
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	174 static double time_since_start()
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	175 {
1250 2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	176 double nowf;
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	177 struct timeval tv;
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	178 gettimeofday(&tv, NULL);
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	179 nowf = tv.tv_sec + (tv.tv_usec / 1000000.0);
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	180 if (debug_start_time < 0)
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	181 {
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	182 debug_start_time = nowf;
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	183 return 0;
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	184 }
2bb4c662d1c2 more hard tab Francois Perrad <francois.perrad@gadz.org> parents: 1211 diff changeset	185 return nowf - debug_start_time;
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	186 }
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	187
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	188 static void dropbear_tracelevel(int level, const char *format, va_list param)
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	189 {
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	190 if (debug_trace == 0 \|\| debug_trace < level) {
94 c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	191 return;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	192 }
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	193
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	194 fprintf(stderr, "TRACE%d (%d) %f: ", level, getpid(), time_since_start());
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	195 vfprintf(stderr, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	196 fprintf(stderr, "\n");
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	197 }
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	198 #if (DEBUG_TRACE>=1)
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	199 void dropbear_trace1(const char* format, ...) {
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	200 va_list param;
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	201
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	202 va_start(param, format);
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	203 dropbear_tracelevel(1, format, param);
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	204 va_end(param);
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	205 }
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	206 #endif
3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	207 #if (DEBUG_TRACE>=2)
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	208 void dropbear_trace2(const char* format, ...) {
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	209 va_list param;
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	210
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	211 va_start(param, format);
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	212 dropbear_tracelevel(2, format, param);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	213 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 }
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	215 #endif
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	216 #if (DEBUG_TRACE>=3)
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	217 void dropbear_trace3(const char* format, ...) {
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	218 va_list param;
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	219
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	220 va_start(param, format);
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	221 dropbear_tracelevel(3, format, param);
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	222 va_end(param);
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	223 }
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	224 #endif
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	225 #if (DEBUG_TRACE>=4)
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	226 void dropbear_trace4(const char* format, ...) {
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	227 va_list param;
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	228
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	229 va_start(param, format);
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	230 dropbear_tracelevel(4, format, param);
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	231 va_end(param);
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	232 }
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	233 #endif
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	234 #if (DEBUG_TRACE>=5)
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	235 void dropbear_trace5(const char* format, ...) {
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	236 va_list param;
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	237
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	238 va_start(param, format);
1898 3f87f7ff1092 Fix building with DEBUG_TRACE = 0 Matt Johnston <matt@ucc.asn.au> parents: 1893 diff changeset	239 dropbear_tracelevel(5, format, param);
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	240 va_end(param);
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	241 }
1893 180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	242 #endif
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	243 #endif
180e580778df Added DEBUG1,DEBUG2,DEBUG3 to separate functions while keeping TRACE and TRACE2. HansH111 <hans@atbas.org> parents: 1851 diff changeset	244
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	245
547 cf376c696dfc Make it compile, update for changes in channel structure. Matt Johnston <matt@ucc.asn.au> parents: 500 diff changeset	246 /* Connect to a given unix socket. The socket is blocking */
1499 2d450c1056e3 options: Complete the transition to numeric toggles (`#if') Michael Witten <mfwitten@gmail.com> parents: 1468 diff changeset	247 #if 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	248 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	249 struct sockaddr_un addr;
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	250 int fd = -1;
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	251
550 61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	252 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	253 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	254 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	255 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	256 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	257 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	258 return -1;
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	259 }
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	260 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	261 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	262 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	263 return -1;
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	264 }
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	265 return fd;
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	266 }
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	267 #endif
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	268
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	269 /* 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	270 * 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	271 * 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	272 * 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	273 * ret_pid can be passed as NULL to discard the pid. */
1460 58a74cb829b8 Pointer parameter could be declared as pointing to const (callback) Francois Perrad <francois.perrad@gadz.org> parents: 1343 diff changeset	274 int spawn_command(void(exec_fn)(const void user_data), const 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	275 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	276 int infds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	277 int outfds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	278 int errfds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	279 pid_t pid;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	280
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	281 const int FDIN = 0;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	282 const int FDOUT = 1;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	283
1740 dfbe947bdf0d Make wrapfd share a common buffer for all FDs Matt Johnston <matt@ucc.asn.au> parents: 1622 diff changeset	284 #if DROPBEAR_FUZZ
dfbe947bdf0d Make wrapfd share a common buffer for all FDs Matt Johnston <matt@ucc.asn.au> parents: 1622 diff changeset	285 if (fuzz.fuzzing) {
dfbe947bdf0d Make wrapfd share a common buffer for all FDs Matt Johnston <matt@ucc.asn.au> parents: 1622 diff changeset	286 return fuzz_spawn_command(ret_writefd, ret_readfd, ret_errfd, ret_pid);
dfbe947bdf0d Make wrapfd share a common buffer for all FDs Matt Johnston <matt@ucc.asn.au> parents: 1622 diff changeset	287 }
dfbe947bdf0d Make wrapfd share a common buffer for all FDs Matt Johnston <matt@ucc.asn.au> parents: 1622 diff changeset	288 #endif
dfbe947bdf0d Make wrapfd share a common buffer for all FDs Matt Johnston <matt@ucc.asn.au> parents: 1622 diff changeset	289
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	290 /* 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	291 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	292 return DROPBEAR_FAILURE;
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	293 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	294 if (pipe(outfds) != 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	295 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	296 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	297 if (ret_errfd && pipe(errfds) != 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	298 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	299 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	300
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1283 diff changeset	301 #if DROPBEAR_VFORK
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	302 pid = vfork();
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	303 #else
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	304 pid = fork();
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	305 #endif
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	306
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	307 if (pid < 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	308 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	309 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	310
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	311 if (!pid) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	312 /* child */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	313
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	314 TRACE(("back to normal sigchld"))
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	315 /* Revert to normal sigchld handling */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	316 if (signal(SIGCHLD, SIG_DFL) == SIG_ERR) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	317 dropbear_exit("signal() error");
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	318 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	319
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	320 /* redirect stdin/stdout */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	321
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	322 if ((dup2(infds[FDIN], STDIN_FILENO) < 0) \|\|
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	323 (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	324 (ret_errfd && dup2(errfds[FDOUT], STDERR_FILENO) < 0)) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	325 TRACE(("leave noptycommand: error redirecting FDs"))
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	326 dropbear_exit("Child dup2() failure");
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	327 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	328
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	329 close(infds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	330 close(infds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	331 close(outfds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	332 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	333 if (ret_errfd)
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	334 {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	335 close(errfds[FDIN]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	336 close(errfds[FDOUT]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	337 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	338
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	339 exec_fn(exec_data);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	340 /* not reached */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	341 return DROPBEAR_FAILURE;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	342 } else {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	343 /* parent */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	344 close(infds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	345 close(outfds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	346
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	347 setnonblocking(outfds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	348 setnonblocking(infds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	349
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	350 if (ret_errfd) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	351 close(errfds[FDOUT]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	352 setnonblocking(errfds[FDIN]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	353 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	354
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	355 if (ret_pid) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	356 *ret_pid = pid;
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	357 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	358
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	359 *ret_writefd = infds[FDOUT];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	360 *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	361 if (ret_errfd) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	362 *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	363 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	364 return DROPBEAR_SUCCESS;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	365 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	366 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	367
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	368 /* 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	369 * 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	370 */
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	371 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	372 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	373 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	374 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	375
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	376 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	377
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	378 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	379 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	380 } else {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	381 /* 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	382 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	383 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	384 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	385 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	386
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	387 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	388 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	389 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	390 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	391 } else {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	392 /* 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	393 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	394 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	395
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	396 /* 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	397 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	398 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	399 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	400
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	401 /* 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	402 * 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	403 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	404 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	405 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	406
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	407 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	408 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	409
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1283 diff changeset	410 #if DEBUG_TRACE
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 173 diff changeset	411 void printhex(const char * label, const unsigned char * buf, int len) {
1764 a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	412 int i, j;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	413
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 173 diff changeset	414 fprintf(stderr, "%s\n", label);
1764 a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	415 /* for each 16 byte line */
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	416 for (j = 0; j < len; j += 16) {
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	417 const int linelen = MIN(16, len - j);
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	418
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	419 /* print hex digits */
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	420 for (i = 0; i < 16; i++) {
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	421 if (i < linelen) {
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	422 fprintf(stderr, "%02x", buf[j+i]);
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	423 } else {
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	424 fprintf(stderr, " ");
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	425 }
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	426 // separator between pairs
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	427 if (i % 2 ==1) {
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	428 fprintf(stderr, " ");
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	429 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	430 }
1764 a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	431
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	432 /* print characters */
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	433 fprintf(stderr, " ");
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	434 for (i = 0; i < linelen; i++) {
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	435 char c = buf[j+i];
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	436 if (!isprint(c)) {
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	437 c = '.';
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	438 }
a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	439 fputc(c, stderr);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	440 }
1764 a339b1c4b9f2 Print ascii in printhex too Matt Johnston <matt@ucc.asn.au> parents: 1740 diff changeset	441 fprintf(stderr, "\n");
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	442 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	443 }
764 2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	444
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	445 void printmpint(const char label, mp_int mp) {
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	446 buffer *buf = buf_new(1000);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	447 buf_putmpint(buf, mp);
1432 41dca1e5ea34 fix dss debug printing Matt Johnston <matt@ucc.asn.au> parents: 1385 diff changeset	448 fprintf(stderr, "%d bits ", mp_count_bits(mp));
764 2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	449 printhex(label, buf->data, buf->len);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	450 buf_free(buf);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	451
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	452 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	453 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	454
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	455 /* 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	456 * for '\n', '\r' and '\t'.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	457 * 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	458 * use */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	459 char * stripcontrol(const char * text) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	460
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	461 char * ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	462 int len, pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	463 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	464
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	465 len = strlen(text);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	466 ret = m_malloc(len+1);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	467
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	468 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	469 for (i = 0; i < len; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	470 if ((text[i] <= '~' && text[i] >= ' ') /* normal printable range */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	471 \|\| 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	472 ret[pos] = text[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	473 pos++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	474 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	475 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	476 ret[pos] = 0x0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	477 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	478 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	479
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	480
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	481 /* 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	482 * 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	483 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	484 int buf_readfile(buffer* buf, const char* filename) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	485
357 9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	486 int fd = -1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	487 int len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	488 int maxlen;
358 e81d3bc1dc78 Forgot variable declaration. Matt Johnston <matt@ucc.asn.au> parents: 357 diff changeset	489 int ret = DROPBEAR_FAILURE;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	490
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	491 fd = open(filename, O_RDONLY);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	492
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	493 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	494 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	495 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	496
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	497 do {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	498 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	499 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	500 if (len < 0) {
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	501 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	502 continue;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	503 }
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	504 goto out;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	505 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	506 buf_incrwritepos(buf, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	507 } while (len < maxlen && len > 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	508
357 9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	509 ret = DROPBEAR_SUCCESS;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	510
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	511 out:
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	512 if (fd >= 0) {
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	513 m_close(fd);
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	514 }
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	515 return ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	516 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	517
51 095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	518 /* 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	519 * authkeys file.
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	520 * 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	521 /* Only used for ~/.ssh/known_hosts and ~/.ssh/authorized_keys */
1295 750ec4ec4cbe Convert #ifdef to #if, other build changes Matt Johnston <matt@ucc.asn.au> parents: 1283 diff changeset	522 #if DROPBEAR_CLIENT \|\| DROPBEAR_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	523 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	524
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	525 int c = EOF;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	526
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	527 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	528 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	529
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	530 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	531
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	532 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	533 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	534 goto out;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	535 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	536
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	537 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	538 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	539
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	540 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	541 /* 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	542 * ignore that line */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	543 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	544
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	545 out:
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	546
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	547
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	548 /* 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	549 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	550 return DROPBEAR_FAILURE;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	551 } 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	552 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	553 return DROPBEAR_SUCCESS;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	554 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	555
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	556 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	557 #endif
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	558
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	559 /* make sure that the socket closes */
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	560 void m_close(int fd) {
1038 d3925ed45a85 Fix for old compilers, variable declarations at beginning of functions Thorsten Horstmann <thorsten.horstmann@web.de> parents: 1022 diff changeset	561 int val;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	562
1453 336cae2238ca test close < 0, from Marco Wenzel Matt Johnston <matt@ucc.asn.au> parents: 1343 diff changeset	563 if (fd < 0) {
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	564 return;
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	565 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	566
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	567 do {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	568 val = close(fd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	569 } while (val < 0 && errno == EINTR);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	570
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	571 if (val < 0 && errno != EBADF) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	572 /* Linux says EIO can happen */
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	573 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	574 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	575 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	576
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	577 void setnonblocking(int fd) {
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	578
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	579 TRACE(("setnonblocking: %d", fd))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	580
1558 2f64cb3d3007 - #if not #ifdef for DROPBEAR_FUZZ Matt Johnston <matt@ucc.asn.au> parents: 1511 diff changeset	581 #if DROPBEAR_FUZZ
1383 f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority() Matt Johnston <matt@ucc.asn.au> parents: 1375 diff changeset	582 if (fuzz.fuzzing) {
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority() Matt Johnston <matt@ucc.asn.au> parents: 1375 diff changeset	583 return;
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority() Matt Johnston <matt@ucc.asn.au> parents: 1375 diff changeset	584 }
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority() Matt Johnston <matt@ucc.asn.au> parents: 1375 diff changeset	585 #endif
f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority() Matt Johnston <matt@ucc.asn.au> parents: 1375 diff changeset	586
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	587 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	588 if (errno == ENODEV) {
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	589 /* 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	590 * 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	591 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	592 } else {
1383 f03cfe9c76ac Disable setnonblocking(), get_socket_address(), set_sock_priority() Matt Johnston <matt@ucc.asn.au> parents: 1375 diff changeset	593 {
173 257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	594 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	595 }
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	596 }
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	597 }
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	598 TRACE(("leave setnonblocking"))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	599 }
425 1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	600
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	601 void disallow_core() {
1903 9382271da9ef Only set soft core limit not hard limit Matt Johnston <matt@ucc.asn.au> parents: 1898 diff changeset	602 struct rlimit lim = {0};
9382271da9ef Only set soft core limit not hard limit Matt Johnston <matt@ucc.asn.au> parents: 1898 diff changeset	603 if (getrlimit(RLIMIT_CORE, &lim) < 0) {
9382271da9ef Only set soft core limit not hard limit Matt Johnston <matt@ucc.asn.au> parents: 1898 diff changeset	604 TRACE(("getrlimit(RLIMIT_CORE) failed"));
9382271da9ef Only set soft core limit not hard limit Matt Johnston <matt@ucc.asn.au> parents: 1898 diff changeset	605 }
9382271da9ef Only set soft core limit not hard limit Matt Johnston <matt@ucc.asn.au> parents: 1898 diff changeset	606 lim.rlim_cur = 0;
9382271da9ef Only set soft core limit not hard limit Matt Johnston <matt@ucc.asn.au> parents: 1898 diff changeset	607 if (setrlimit(RLIMIT_CORE, &lim) < 0) {
9382271da9ef Only set soft core limit not hard limit Matt Johnston <matt@ucc.asn.au> parents: 1898 diff changeset	608 TRACE(("setrlimit(RLIMIT_CORE) failed"));
9382271da9ef Only set soft core limit not hard limit Matt Johnston <matt@ucc.asn.au> parents: 1898 diff changeset	609 }
425 1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	610 }
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	611
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	612 /* 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	613 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	614 unsigned long l;
1833 870f6e386a0b Partial strings from strtoul should return error Matt Johnston <matt@codeconstruct.com.au> parents: 1764 diff changeset	615 char *endp;
870f6e386a0b Partial strings from strtoul should return error Matt Johnston <matt@codeconstruct.com.au> parents: 1764 diff changeset	616
870f6e386a0b Partial strings from strtoul should return error Matt Johnston <matt@codeconstruct.com.au> parents: 1764 diff changeset	617 l = strtoul(str, &endp, 10);
870f6e386a0b Partial strings from strtoul should return error Matt Johnston <matt@codeconstruct.com.au> parents: 1764 diff changeset	618
870f6e386a0b Partial strings from strtoul should return error Matt Johnston <matt@codeconstruct.com.au> parents: 1764 diff changeset	619 if (endp == str \|\| *endp != '\0') {
1925 7ac3b6c380b1 Fix C99 comment Matt Johnston <matt@ucc.asn.au> parents: 1924 diff changeset	620 /* parse error */
1833 870f6e386a0b Partial strings from strtoul should return error Matt Johnston <matt@codeconstruct.com.au> parents: 1764 diff changeset	621 return DROPBEAR_FAILURE;
870f6e386a0b Partial strings from strtoul should return error Matt Johnston <matt@codeconstruct.com.au> parents: 1764 diff changeset	622 }
870f6e386a0b Partial strings from strtoul should return error Matt Johnston <matt@codeconstruct.com.au> parents: 1764 diff changeset	623
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	624 /* 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	625 * I've looked at mention it in their manpage */
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	626 if ((l == 0 && errno == EINVAL)
30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	627 \|\| (l == ULONG_MAX && errno == ERANGE)
30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	628 \|\| (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	629 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	630 } else {
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	631 *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	632 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	633 }
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	634 }
817 a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	635
1924 667937351c31 Fix tilde expansion of paths Matt Johnston <matt@ucc.asn.au> parents: 1903 diff changeset	636 /* Returns malloced path. inpath beginning with '~/' expanded,
667937351c31 Fix tilde expansion of paths Matt Johnston <matt@ucc.asn.au> parents: 1903 diff changeset	637 otherwise returned as-is */
1134 36557295418e change DROPBEAR_DEFAULT_CLI_AUTHKEY to just prepend homedir Matt Johnston <matt@ucc.asn.au> parents: 1049 diff changeset	638 char * expand_homedir_path(const char *inpath) {
995 6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	639 struct passwd *pw = NULL;
1924 667937351c31 Fix tilde expansion of paths Matt Johnston <matt@ucc.asn.au> parents: 1903 diff changeset	640 if (strncmp(inpath, "~/", 2) == 0) {
1851 7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	641 char *homedir = getenv("HOME");
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	642
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	643 if (!homedir) {
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	644 pw = getpwuid(getuid());
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	645 if (pw) {
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	646 homedir = pw->pw_dir;
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	647 }
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	648 }
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	649
7f549ee3df48 Use HOME before /etc/passwd to find id_dropbear (#137) Matt Robinson <git@nerdoftheherd.com> parents: 1835 diff changeset	650 if (homedir) {
1924 667937351c31 Fix tilde expansion of paths Matt Johnston <matt@ucc.asn.au> parents: 1903 diff changeset	651 int len = strlen(inpath)-2 + strlen(homedir) + 2;
995 6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	652 char *buf = m_malloc(len);
1924 667937351c31 Fix tilde expansion of paths Matt Johnston <matt@ucc.asn.au> parents: 1903 diff changeset	653 snprintf(buf, len, "%s/%s", homedir, inpath+2);
995 6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	654 return buf;
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	655 }
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	656 }
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	657
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	658 /* Fallback */
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	659 return m_strdup(inpath);
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	660 }
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	661
817 a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	662 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	663 {
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	664 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	665 uint8_t c = 0;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	666 size_t i;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	667 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	668 {
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	669 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	670 }
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	671 return c;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	672 }
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	673
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	674 /* higher-resolution monotonic timestamp, falls back to gettimeofday */
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	675 void gettime_wrapper(struct timespec *now) {
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	676 struct timeval tv;
1558 2f64cb3d3007 - #if not #ifdef for DROPBEAR_FUZZ Matt Johnston <matt@ucc.asn.au> parents: 1511 diff changeset	677 #if DROPBEAR_FUZZ
1375 d8215479a58a fuzzing has a constant time Matt Johnston <matt@ucc.asn.au> parents: 1369 diff changeset	678 if (fuzz.fuzzing) {
d8215479a58a fuzzing has a constant time Matt Johnston <matt@ucc.asn.au> parents: 1369 diff changeset	679 /* time stands still when fuzzing */
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	680 now->tv_sec = 5;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	681 now->tv_nsec = 0;
1375 d8215479a58a fuzzing has a constant time Matt Johnston <matt@ucc.asn.au> parents: 1369 diff changeset	682 }
d8215479a58a fuzzing has a constant time Matt Johnston <matt@ucc.asn.au> parents: 1369 diff changeset	683 #endif
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	684
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	685 #if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_MONOTONIC)
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	686 /* POSIX monotonic clock. Newer Linux, BSD, MacOSX >10.12 */
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	687 if (clock_gettime(CLOCK_MONOTONIC, now) == 0) {
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	688 return;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	689 }
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	690 #endif
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	691
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	692 #if defined(__linux__) && defined(SYS_clock_gettime)
1375 d8215479a58a fuzzing has a constant time Matt Johnston <matt@ucc.asn.au> parents: 1369 diff changeset	693 {
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	694 /* Old linux toolchain - kernel might support it but not the build headers */
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	695 /* Also glibc <2.17 requires -lrt which we neglect to add */
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	696 static int linux_monotonic_failed = 0;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	697 if (!linux_monotonic_failed) {
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	698 /* CLOCK_MONOTONIC isn't in some headers */
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	699 int clock_source_monotonic = 1;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	700 if (syscall(SYS_clock_gettime, clock_source_monotonic, now) == 0) {
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	701 return;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	702 } else {
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	703 /* Don't try again */
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	704 linux_monotonic_failed = 1;
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	705 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	706 }
1375 d8215479a58a fuzzing has a constant time Matt Johnston <matt@ucc.asn.au> parents: 1369 diff changeset	707 }
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	708 #endif /* linux fallback clock_gettime */
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	709
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	710 #if defined(HAVE_MACH_ABSOLUTE_TIME)
1375 d8215479a58a fuzzing has a constant time Matt Johnston <matt@ucc.asn.au> parents: 1369 diff changeset	711 {
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	712 /* OS X pre 10.12, 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	713 static mach_timebase_info_data_t timebase_info;
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	714 uint64_t scaled_time;
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	715 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	716 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	717 }
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	718 scaled_time = mach_absolute_time() * timebase_info.numer / timebase_info.denom;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	719 now->tv_sec = scaled_time / 1000000000;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	720 now->tv_nsec = scaled_time % 1000000000;
1375 d8215479a58a fuzzing has a constant time Matt Johnston <matt@ucc.asn.au> parents: 1369 diff changeset	721 }
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	722 #endif /* osx mach_absolute_time */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	723
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	724 /* Fallback for everything else - this will sometimes go backwards */
1622 e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	725 gettimeofday(&tv, NULL);
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	726 now->tv_sec = tv.tv_sec;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	727 now->tv_nsec = 1000*tv.tv_usec;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	728 }
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	729
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	730 /* second-resolution monotonic timestamp */
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	731 time_t monotonic_now() {
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	732 struct timespec ts;
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	733 gettime_wrapper(&ts);
e11ed628708b - Add adaptive authentication failure delay Matt Johnston <matt@ucc.asn.au> parents: 1575 diff changeset	734 return ts.tv_sec;
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	735 }
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	736
1329 185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	737 void fsync_parent_dir(const char* fn) {
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	738 #ifdef HAVE_LIBGEN_H
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	739 char *fn_dir = m_strdup(fn);
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	740 char *dir = dirname(fn_dir);
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	741 int dirfd = open(dir, O_RDONLY);
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	742
1329 185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	743 if (dirfd != -1) {
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	744 if (fsync(dirfd) != 0) {
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	745 TRACE(("fsync of directory %s failed: %s", dir, strerror(errno)))
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	746 }
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	747 m_close(dirfd);
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	748 } else {
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	749 TRACE(("error opening directory %s for fsync: %s", dir, strerror(errno)))
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	750 }
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	751
1575 e75dab5bec71 some linting after fuzz merge (#60) François Perrad <francois.perrad@gadz.org> parents: 1559 diff changeset	752 m_free(fn_dir);
1329 185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	753 #endif
185c14fa504d Use atomic key generation in all cases Matt Johnston <matt@ucc.asn.au> parents: 1319 diff changeset	754 }
1835 90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	755
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	756 int fd_read_pending(int fd) {
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	757 fd_set fds;
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	758 struct timeval timeout;
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	759
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	760 DROPBEAR_FD_ZERO(&fds);
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	761 FD_SET(fd, &fds);
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	762 while (1) {
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	763 timeout.tv_sec = 0;
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	764 timeout.tv_usec = 0;
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	765 if (select(fd+1, &fds, NULL, NULL, &timeout) < 0) {
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	766 if (errno == EINTR) {
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	767 continue;
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	768 }
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	769 return 0;
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	770 }
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	771 return FD_ISSET(fd, &fds);
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	772 }
90ac15aeac43 Bring back recently removed channel->flushing Matt Johnston <matt@codeconstruct.com.au> parents: 1833 diff changeset	773 }
1934 83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	774
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	775 int m_snprintf(char str, size_t size, const char format, ...) {
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	776 va_list param;
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	777 int ret;
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	778
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	779 va_start(param, format);
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	780 ret = vsnprintf(str, size, format, param);
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	781 va_end(param);
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	782 if (ret < 0) {
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	783 dropbear_exit("snprintf failed");
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	784 }
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	785 return ret;
83b6a47759a8 Add m_snprintf() that won't return negative Matt Johnston <matt@ucc.asn.au> parents: 1925 diff changeset	786 }

Mercurial > dropbear

annotate dbutil.c @ 1938:77bc00dcc19f default tip main master