dropbear: dbutil.c annotate

annotate dbutil.c @ 1025:02baa0b334e8 fastopen

async connections working

author	Matt Johnston <matt@ucc.asn.au>
date	Wed, 18 Feb 2015 22:46:15 +0800
parents	aac0095dc3b4
children	daf21fd50abf

rev	line source
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 * Dropbear - a SSH2 server
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * All rights reserved.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * Permission is hereby granted, free of charge, to any person obtaining a copy
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 * of this software and associated documentation files (the "Software"), to deal
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 * in the Software without restriction, including without limitation the rights
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 * copies of the Software, and to permit persons to whom the Software is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 * furnished to do so, subject to the following conditions:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 * The above copyright notice and this permission notice shall be included in
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * all copies or substantial portions of the Software.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 * SOFTWARE.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	25 * strlcat() is copyright as follows:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26 * Copyright (c) 1998 Todd C. Miller <[email protected]>
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 * All rights reserved.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29 * Redistribution and use in source and binary forms, with or without
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30 * modification, are permitted provided that the following conditions
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	31 * are met:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32 * 1. Redistributions of source code must retain the above copyright
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	33 * notice, this list of conditions and the following disclaimer.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 * 2. Redistributions in binary form must reproduce the above copyright
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35 * notice, this list of conditions and the following disclaimer in the
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	36 * documentation and/or other materials provided with the distribution.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 * 3. The name of the author may not be used to endorse or promote products
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	38 * derived from this software without specific prior written permission.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	40 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	45 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	46 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	51 #include "config.h"
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	52
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	53 #ifdef __linux__
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	54 #define _GNU_SOURCE
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	55 /* To call clock_gettime() directly */
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	56 #include <sys/syscall.h>
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	57 #endif /* __linux */
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	58
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	59 #ifdef HAVE_MACH_MACH_TIME_H
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	60 #include <mach/mach_time.h>
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	61 #include <mach/mach.h>
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	62 #endif
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	63
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 #include "includes.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 #include "buffer.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67 #include "session.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68 #include "atomicio.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70 #define MAX_FMT 100
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	72 static void generic_dropbear_exit(int exitcode, const char* format,
614 00eca37e47e8 Add noreturn and format attribute hints for some functions. Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	73 va_list param) ATTRIB_NORETURN;
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	74 static void generic_dropbear_log(int priority, const char* format,
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	75 va_list param);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	76
614 00eca37e47e8 Add noreturn and format attribute hints for some functions. Matt Johnston <matt@ucc.asn.au> parents: 594 diff changeset	77 void (_dropbear_exit)(int exitcode, const char format, va_list param) ATTRIB_NORETURN
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	78 = generic_dropbear_exit;
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	79 void (_dropbear_log)(int priority, const char format, va_list param)
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	80 = generic_dropbear_log;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81
94 c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	82 #ifdef DEBUG_TRACE
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	83 int debug_trace = 0;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	84 #endif
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	85
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86 #ifndef DISABLE_SYSLOG
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 void startsyslog() {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 openlog(PROGNAME, LOG_PID, LOG_AUTHPRIV);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 #endif /* DISABLE_SYSLOG */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	94 /* the "format" string must be <= 100 characters */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	95 void dropbear_close(const char* format, ...) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	96
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	97 va_list param;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	98
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	99 va_start(param, format);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	100 _dropbear_exit(EXIT_SUCCESS, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	101 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	102
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	103 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	104
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	105 void dropbear_exit(const char* format, ...) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	106
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	107 va_list param;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	108
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	109 va_start(param, format);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	110 _dropbear_exit(EXIT_FAILURE, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	111 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	112 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	113
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	114 static void generic_dropbear_exit(int exitcode, const char* format,
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	115 va_list param) {
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	116
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	117 char fmtbuf[300];
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	118
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	119 snprintf(fmtbuf, sizeof(fmtbuf), "Exited: %s", format);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	120
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	121 _dropbear_log(LOG_INFO, fmtbuf, param);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	122
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	123 exit(exitcode);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	124 }
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	125
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	126 void fail_assert(const char* expr, const char* file, int line) {
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	127 dropbear_exit("Failed assertion (%s:%d): `%s'", file, line, expr);
241 c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	128 }
c5d3ef11155f * use own assertions which should get logged properly Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	129
108 10f4d3319780 - added circular buffering for channels Matt Johnston <matt@ucc.asn.au> parents: 107 diff changeset	130 static void generic_dropbear_log(int UNUSED(priority), const char* format,
73 0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	131 va_list param) {
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	132
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	133 char printbuf[1024];
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	134
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	135 vsnprintf(printbuf, sizeof(printbuf), format, param);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	136
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	137 fprintf(stderr, "%s\n", printbuf);
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	138
0bf5cebe622c Dropbearkey can now print out pubkey portions Matt Johnston <matt@ucc.asn.au> parents: 70 diff changeset	139 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	140
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	141 /* this is what can be called to write arbitrary log messages */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	142 void dropbear_log(int priority, const char* format, ...) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	143
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	144 va_list param;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	145
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	146 va_start(param, format);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	147 _dropbear_log(priority, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	148 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	149 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	150
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	151
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	152 #ifdef DEBUG_TRACE
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	153
1021 24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	154 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	155
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	156 void debug_start_net()
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	157 {
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	158 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	159 {
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	160 /* Timestamps start from first network activity */
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	161 struct timeval tv;
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	162 gettimeofday(&tv, NULL);
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	163 debug_start_time = tv.tv_sec + (tv.tv_usec / 1000000.0);
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	164 TRACE(("Resetting Dropbear TRACE timestamps"))
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	165 }
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	166 }
24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	167
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	168 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	169 {
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	170 double nowf;
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	171 struct timeval tv;
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	172 gettimeofday(&tv, NULL);
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	173 nowf = tv.tv_sec + (tv.tv_usec / 1000000.0);
1021 24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	174 if (debug_start_time < 0)
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	175 {
1021 24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	176 debug_start_time = nowf;
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	177 return 0;
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	178 }
1021 24135c8e1d46 Add envirnonment variable for debug timestamps to roughly match Matt Johnston <matt@ucc.asn.au> parents: 1018 diff changeset	179 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	180 }
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	181
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	182 void dropbear_trace(const char* format, ...) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	183 va_list param;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	184
94 c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	185 if (!debug_trace) {
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	186 return;
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	187 }
c85c88500ea6 DEBUG_TRACE now only triggers with -v on the cmdline Matt Johnston <matt@ucc.asn.au> parents: 73 diff changeset	188
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	189 va_start(param, format);
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	190 fprintf(stderr, "TRACE (%d) %f: ", getpid(), time_since_start());
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	191 vfprintf(stderr, format, param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	192 fprintf(stderr, "\n");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	193 va_end(param);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	194 }
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	195
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	196 void dropbear_trace2(const char* format, ...) {
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	197 static int trace_env = -1;
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	198 va_list param;
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	199
753 d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	200 if (trace_env == -1) {
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	201 trace_env = getenv("DROPBEAR_TRACE2") ? 1 : 0;
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	202 }
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	203
d63ef1e211ea Take transmit and receive keys into use separately Matt Johnston <matt@ucc.asn.au> parents: 731 diff changeset	204 if (!(debug_trace && trace_env)) {
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	205 return;
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	206 }
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	207
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	208 va_start(param, format);
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	209 fprintf(stderr, "TRACE2 (%d) %f: ", getpid(), time_since_start());
731 9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	210 vfprintf(stderr, format, param);
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	211 fprintf(stderr, "\n");
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	212 va_end(param);
9a5438271556 Move the more verbose TRACE() statements into TRACE2() Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	213 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	214 #endif /* DEBUG_TRACE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	215
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	216 void set_sock_nodelay(int sock) {
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	217 int val;
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	218
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	219 /* disable nagle */
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	220 val = 1;
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	221 setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void*)&val, sizeof(val));
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	222 }
80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	223
1023 a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	224 #ifdef DROPBEAR_TCP_FAST_OPEN
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	225 void set_listen_fast_open(int sock) {
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	226 int qlen = MAX(MAX_UNAUTH_PER_IP, 5);
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	227 if (setsockopt(sock, SOL_TCP, TCP_FASTOPEN, &qlen, sizeof(qlen)) != 0) {
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	228 TRACE(("set_listen_fast_open failed for socket %d: %s", sock, strerror(errno)))
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	229 }
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	230 }
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	231
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	232 #endif
a00303a7d247 tcp fastopen for the server Matt Johnston <matt@ucc.asn.au> parents: 1022 diff changeset	233
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	234 void set_sock_priority(int sock, enum dropbear_prio prio) {
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	235
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	236 int iptos_val = 0, so_prio_val = 0, rc;
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	237
962 db9fa5971d24 Don't warn about ENOTSOCK when setting priority Matt Johnston <matt@ucc.asn.au> parents: 953 diff changeset	238 /* Don't log ENOTSOCK errors so that this can harmlessly be called
db9fa5971d24 Don't warn about ENOTSOCK when setting priority Matt Johnston <matt@ucc.asn.au> parents: 953 diff changeset	239 * on a client '-J' proxy pipe */
db9fa5971d24 Don't warn about ENOTSOCK when setting priority Matt Johnston <matt@ucc.asn.au> parents: 953 diff changeset	240
629 bdadc7f4b97d Set IPTOS_LOWDELAY for IPv6 too Matt Johnston <matt@ucc.asn.au> parents: 627 diff changeset	241 /* set the TOS bit for either ipv4 or ipv6 */
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	242 #ifdef IPTOS_LOWDELAY
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	243 if (prio == DROPBEAR_PRIO_LOWDELAY) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	244 iptos_val = IPTOS_LOWDELAY;
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	245 } else if (prio == DROPBEAR_PRIO_BULK) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	246 iptos_val = IPTOS_THROUGHPUT;
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	247 }
639 452bcf810e44 Put better #if guards around IPv6 socket options for IPV6_TCLASS and Matt Johnston <matt@ucc.asn.au> parents: 629 diff changeset	248 #if defined(IPPROTO_IPV6) && defined(IPV6_TCLASS)
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	249 rc = setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS, (void*)&iptos_val, sizeof(iptos_val));
962 db9fa5971d24 Don't warn about ENOTSOCK when setting priority Matt Johnston <matt@ucc.asn.au> parents: 953 diff changeset	250 if (rc < 0 && errno != ENOTSOCK) {
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	251 TRACE(("Couldn't set IPV6_TCLASS (%s)", strerror(errno)));
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	252 }
629 bdadc7f4b97d Set IPTOS_LOWDELAY for IPv6 too Matt Johnston <matt@ucc.asn.au> parents: 627 diff changeset	253 #endif
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	254 rc = setsockopt(sock, IPPROTO_IP, IP_TOS, (void*)&iptos_val, sizeof(iptos_val));
962 db9fa5971d24 Don't warn about ENOTSOCK when setting priority Matt Johnston <matt@ucc.asn.au> parents: 953 diff changeset	255 if (rc < 0 && errno != ENOTSOCK) {
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	256 TRACE(("Couldn't set IP_TOS (%s)", strerror(errno)));
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	257 }
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	258 #endif
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	259
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	260 #ifdef SO_PRIORITY
871 aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	261 if (prio == DROPBEAR_PRIO_LOWDELAY) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	262 so_prio_val = TC_PRIO_INTERACTIVE;
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	263 } else if (prio == DROPBEAR_PRIO_BULK) {
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	264 so_prio_val = TC_PRIO_BULK;
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	265 }
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	266 /* linux specific, sets QoS class. see tc-prio(8) */
aa689d140928 - Sockets are set to lowdelay priority initially to improve conneciton setup Matt Johnston <matt@ucc.asn.au> parents: 870 diff changeset	267 rc = setsockopt(sock, SOL_SOCKET, SO_PRIORITY, (void*) &so_prio_val, sizeof(so_prio_val));
962 db9fa5971d24 Don't warn about ENOTSOCK when setting priority Matt Johnston <matt@ucc.asn.au> parents: 953 diff changeset	268 if (rc < 0 && errno != ENOTSOCK)
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	269 dropbear_log(LOG_WARNING, "Couldn't set SO_PRIORITY (%s)",
80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	270 strerror(errno));
251 b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	271 #endif
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	272
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	273 }
b02e8eef3c3a - new function to set "low delay" for a packet, set the ip TOS bit Matt Johnston <matt@ucc.asn.au> parents: 242 diff changeset	274
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	275 /* Listen on address:port.
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	276 * Special cases are address of "" listening on everything,
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	277 * and address of NULL listening on localhost only.
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	278 * Returns the number of sockets bound on success, or -1 on failure. On
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	279 * failure, if errstring wasn't NULL, it'll be a newly malloced error
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	280 * string.*/
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	281 int dropbear_listen(const char* address, const char* port,
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	282 int socks, unsigned int sockcount, char errstring, int maxfd) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	283
70 b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree Matt Johnston <matt@ucc.asn.au> parents: 68 diff changeset	284 struct addrinfo hints, res = NULL, res0 = NULL;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	285 int err;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	286 unsigned int nsock;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	287 struct linger linger;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	288 int val;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	289 int sock;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	290
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	291 TRACE(("enter dropbear_listen"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	292
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	293 memset(&hints, 0, sizeof(hints));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	294 hints.ai_family = AF_UNSPEC; /* TODO: let them flag v4 only etc */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	295 hints.ai_socktype = SOCK_STREAM;
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	296
433 c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 425 diff changeset	297 /* for calling getaddrinfo:
c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 425 diff changeset	298 address == NULL and !AI_PASSIVE: local loopback
c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 425 diff changeset	299 address == NULL and AI_PASSIVE: all interfaces
c216212001fc Fix for -pedantic -ansi compilation, change // to /*/, plus some signedness Matt Johnston <matt@ucc.asn.au>* parents: 425 diff changeset	300 address != NULL: whatever the address says */
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	301 if (!address) {
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	302 TRACE(("dropbear_listen: local loopback"))
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	303 } else {
258 306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	304 if (address[0] == '\0') {
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	305 TRACE(("dropbear_listen: all interfaces"))
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	306 address = NULL;
306499676384 * add -g (dbclient) and -a (dropbear) options for allowing non-local Matt Johnston <matt@ucc.asn.au> parents: 251 diff changeset	307 }
63 dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	308 hints.ai_flags = AI_PASSIVE;
dcc43965928f - A nice cleaner structure for tcp (acceptor) forwarding. Matt Johnston <matt@ucc.asn.au> parents: 62 diff changeset	309 }
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	310 err = getaddrinfo(address, port, &hints, &res0);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	311
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	312 if (err) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	313 if (errstring != NULL && *errstring == NULL) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	314 int len;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	315 len = 20 + strlen(gai_strerror(err));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	316 errstring = (char)m_malloc(len);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	317 snprintf(*errstring, len, "Error resolving: %s", gai_strerror(err));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	318 }
239 e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	319 if (res0) {
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	320 freeaddrinfo(res0);
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	321 res0 = NULL;
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	322 }
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	323 TRACE(("leave dropbear_listen: failed resolving"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	324 return -1;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	325 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	326
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	327
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	328 nsock = 0;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	329 for (res = res0; res != NULL && nsock < sockcount;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	330 res = res->ai_next) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	331
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	332 /* Get a socket */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	333 socks[nsock] = socket(res->ai_family, res->ai_socktype,
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	334 res->ai_protocol);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	335
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	336 sock = socks[nsock]; /* For clarity */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	337
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	338 if (sock < 0) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	339 err = errno;
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	340 TRACE(("socket() failed"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	341 continue;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	342 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	343
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	344 /* Various useful socket options */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	345 val = 1;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	346 /* set to reuse, quick timeout */
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	347 setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*) &val, sizeof(val));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	348 linger.l_onoff = 1;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	349 linger.l_linger = 5;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	350 setsockopt(sock, SOL_SOCKET, SO_LINGER, (void*)&linger, sizeof(linger));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	351
639 452bcf810e44 Put better #if guards around IPv6 socket options for IPV6_TCLASS and Matt Johnston <matt@ucc.asn.au> parents: 629 diff changeset	352 #if defined(IPPROTO_IPV6) && defined(IPV6_V6ONLY)
627 7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	353 if (res->ai_family == AF_INET6) {
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	354 int on = 1;
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	355 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY,
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	356 &on, sizeof(on)) == -1) {
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	357 dropbear_log(LOG_WARNING, "Couldn't set IPV6_V6ONLY");
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	358 }
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	359 }
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	360 #endif
7cc34a52feb8 Try bind IPV6_V6ONLY Matt Johnston <matt@ucc.asn.au> parents: 615 diff changeset	361
870 80af450dae76 Set IPTOS_LOWDELAY on PTY sessions only Catalin Patulea <cat@vv.carleton.ca> parents: 864 diff changeset	362 set_sock_nodelay(sock);
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	363
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	364 if (bind(sock, res->ai_addr, res->ai_addrlen) < 0) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	365 err = errno;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	366 close(sock);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	367 TRACE(("bind(%s) failed", port))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	368 continue;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	369 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	370
936 d93a6bcf616f Improve handling lots of concurrent forwarded connections. Increase Matt Johnston <matt@ucc.asn.au> parents: 930 diff changeset	371 if (listen(sock, DROPBEAR_LISTEN_BACKLOG) < 0) {
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	372 err = errno;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	373 close(sock);
165 0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place Matt Johnston <matt@ucc.asn.au> parents: 161 diff changeset	374 TRACE(("listen() failed"))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	375 continue;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	376 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	377
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	378 maxfd = MAX(maxfd, sock);
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	379
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	380 nsock++;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	381 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	382
239 e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	383 if (res0) {
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	384 freeaddrinfo(res0);
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	385 res0 = NULL;
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	386 }
e5ad9fa8b1fa add a missing freeaddrinfo() Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	387
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	388 if (nsock == 0) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	389 if (errstring != NULL && *errstring == NULL) {
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	390 int len;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	391 len = 20 + strlen(strerror(err));
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	392 errstring = (char)m_malloc(len);
64 efb5e0b335cf TCP forwarding works. Matt Johnston <matt@ucc.asn.au> parents: 63 diff changeset	393 snprintf(*errstring, len, "Error listening: %s", strerror(err));
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	394 }
408 28b10e93685c Fix failure-handling in dropbear_listen() when errstring is unset Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	395 TRACE(("leave dropbear_listen: failure, %s", strerror(err)))
28b10e93685c Fix failure-handling in dropbear_listen() when errstring is unset Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	396 return -1;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	397 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	398
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	399 TRACE(("leave dropbear_listen: success, %d socks bound", nsock))
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	400 return nsock;
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	401 }
20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	402
547 cf376c696dfc Make it compile, update for changes in channel structure. Matt Johnston <matt@ucc.asn.au> parents: 500 diff changeset	403 /* Connect to a given unix socket. The socket is blocking */
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	404 #ifdef ENABLE_CONNECT_UNIX
550 61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	405 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	406 struct sockaddr_un addr;
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	407 int fd = -1;
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	408
550 61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	409 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	410 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	411 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	412 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	413 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	414 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	415 return -1;
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	416 }
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	417 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	418 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	419 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	420 return -1;
61c3513825b0 Talking to the agent works now. Can't interpret the pubkeys. Matt Johnston <matt@ucc.asn.au> parents: 547 diff changeset	421 }
225 ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	422 return fd;
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	423 }
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	424 #endif
ca7e76d981d9 - progress towards client agent forwarding Matt Johnston <matt@ucc.asn.au> parents: 198 diff changeset	425
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	426 #if defined(__linux__) && defined(TCP_DEFER_ACCEPT)
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	427 static void set_piggyback_ack(int sock) {
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	428 /* Undocumented Linux feature - set TCP_DEFER_ACCEPT and data will be piggybacked
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	429 on the 3rd packet (ack) of the TCP handshake. Saves a IP packet.
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	430 http://thread.gmane.org/gmane.linux.network/224627/focus=224727
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	431 "Piggyback the final ACK of the three way TCP connection establishment with the data" */
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	432 int val = 1;
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	433 /* No error checking, this is opportunistic */
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	434 int err = setsockopt(sock, IPPROTO_TCP, TCP_DEFER_ACCEPT, (void*)&val, sizeof(val));
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	435 if (err)
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	436 {
1018 cb148f8d3d22 Make it compile Matt Johnston <matt@ucc.asn.au> parents: 1016 diff changeset	437 TRACE(("Failed setsockopt TCP_DEFER_ACCEPT: %s", strerror(errno)))
1016 257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	438 }
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	439 }
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	440 #endif
257f7d5fca97 piggyback data on acks when making connections on linux Matt Johnston <matt@ucc.asn.au> parents: 995 diff changeset	441
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	442 /* 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	443 * 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	444 * 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	445 * 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	446 * ret_pid can be passed as NULL to discard the pid. */
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	447 int spawn_command(void(exec_fn)(void user_data), void *exec_data,
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	448 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	449 int infds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	450 int outfds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	451 int errfds[2];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	452 pid_t pid;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	453
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	454 const int FDIN = 0;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	455 const int FDOUT = 1;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	456
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	457 /* 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	458 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	459 return DROPBEAR_FAILURE;
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	460 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	461 if (pipe(outfds) != 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	462 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	463 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	464 if (ret_errfd && pipe(errfds) != 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	465 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	466 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	467
667 fc7ae88e63b3 Rename HAVE_FORK to USE_VFORK Matt Johnston <matt@ucc.asn.au> parents: 666 diff changeset	468 #ifdef USE_VFORK
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	469 pid = vfork();
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	470 #else
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	471 pid = fork();
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	472 #endif
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	473
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	474 if (pid < 0) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	475 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	476 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	477
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	478 if (!pid) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	479 /* child */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	480
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	481 TRACE(("back to normal sigchld"))
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	482 /* Revert to normal sigchld handling */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	483 if (signal(SIGCHLD, SIG_DFL) == SIG_ERR) {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	484 dropbear_exit("signal() error");
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	485 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	486
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	487 /* redirect stdin/stdout */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	488
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	489 if ((dup2(infds[FDIN], STDIN_FILENO) < 0) \|\|
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	490 (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	491 (ret_errfd && dup2(errfds[FDOUT], STDERR_FILENO) < 0)) {
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	492 TRACE(("leave noptycommand: error redirecting FDs"))
594 a98a2138364a Improve capitalisation for all logged strings Matt Johnston <matt@ucc.asn.au> parents: 568 diff changeset	493 dropbear_exit("Child dup2() failure");
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	494 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	495
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	496 close(infds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	497 close(infds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	498 close(outfds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	499 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	500 if (ret_errfd)
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	501 {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	502 close(errfds[FDIN]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	503 close(errfds[FDOUT]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	504 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	505
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	506 exec_fn(exec_data);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	507 /* not reached */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	508 return DROPBEAR_FAILURE;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	509 } else {
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	510 /* parent */
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	511 close(infds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	512 close(outfds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	513
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	514 setnonblocking(outfds[FDIN]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	515 setnonblocking(infds[FDOUT]);
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	516
484 effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	517 if (ret_errfd) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	518 close(errfds[FDOUT]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	519 setnonblocking(errfds[FDIN]);
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	520 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	521
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	522 if (ret_pid) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	523 *ret_pid = pid;
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	524 }
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	525
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	526 *ret_writefd = infds[FDOUT];
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	527 *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	528 if (ret_errfd) {
effb4a25b1ae Don't capture stderr from spawned processes in proxycommand mode Matt Johnston <matt@ucc.asn.au> parents: 482 diff changeset	529 *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	530 }
481 357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	531 return DROPBEAR_SUCCESS;
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	532 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	533 }
357a2e2e9bcc - Generalise spawn_command function Matt Johnston <matt@ucc.asn.au> parents: 433 diff changeset	534
482 7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	535 /* 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	536 * 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	537 */
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	538 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	539 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	540 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	541 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	542
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	543 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	544
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	545 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	546 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	547 } else {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	548 /* 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	549 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	550 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	551 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	552 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	553
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	554 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	555 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	556 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	557 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	558 } else {
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	559 /* 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	560 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	561 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	562
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	563 /* 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	564 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	565 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	566 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	567
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	568 /* 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	569 * 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	570 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	571 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	572 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	573
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	574 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	575 }
7ad49f34a122 - Add run_shell_command() function to run a "sh -c" command, handling Matt Johnston <matt@ucc.asn.au> parents: 481 diff changeset	576
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	577 void get_socket_address(int fd, char local_host, char local_port,
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	578 char remote_host, char remote_port, int host_lookup)
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	579 {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	580 struct sockaddr_storage addr;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	581 socklen_t addrlen;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	582
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	583 if (local_host \|\| local_port) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	584 addrlen = sizeof(addr);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	585 if (getsockname(fd, (struct sockaddr*)&addr, &addrlen) < 0) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	586 dropbear_exit("Failed socket address: %s", strerror(errno));
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	587 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	588 getaddrstring(&addr, local_host, local_port, host_lookup);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	589 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	590 if (remote_host \|\| remote_port) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	591 addrlen = sizeof(addr);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	592 if (getpeername(fd, (struct sockaddr*)&addr, &addrlen) < 0) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	593 dropbear_exit("Failed socket address: %s", strerror(errno));
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	594 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	595 getaddrstring(&addr, remote_host, remote_port, host_lookup);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	596 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	597 }
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	598
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	599 /* Return a string representation of the socket address passed. The return
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	600 * value is allocated with malloc() */
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	601 void getaddrstring(struct sockaddr_storage* addr,
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	602 char ret_host, char ret_port,
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	603 int host_lookup) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	604
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	605 char host[NI_MAXHOST+1], serv[NI_MAXSERV+1];
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	606 unsigned int len;
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	607 int ret;
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	608
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	609 int flags = NI_NUMERICSERV \| NI_NUMERICHOST;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	610
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	611 #ifndef DO_HOST_LOOKUP
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	612 host_lookup = 0;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	613 #endif
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	614
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	615 if (host_lookup) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	616 flags = NI_NUMERICSERV;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	617 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	618
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	619 len = sizeof(struct sockaddr_storage);
160 7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	620 /* Some platforms such as Solaris 8 require that len is the length
335 e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	621 * of the specific structure. Some older linux systems (glibc 2.1.3
e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	622 * such as debian potato) have sockaddr_storage.__ss_family instead
e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	623 * but we'll ignore them */
e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	624 #ifdef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
160 7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	625 if (addr->ss_family == AF_INET) {
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	626 len = sizeof(struct sockaddr_in);
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	627 }
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	628 #ifdef AF_INET6
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	629 if (addr->ss_family == AF_INET6) {
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	630 len = sizeof(struct sockaddr_in6);
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	631 }
7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	632 #endif
335 e17f0333c21e Another stab at getting ss_family happy on older glibc Matt Johnston <matt@ucc.asn.au> parents: 277 diff changeset	633 #endif
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	634
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	635 ret = getnameinfo((struct sockaddr*)addr, len, host, sizeof(host)-1,
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	636 serv, sizeof(serv)-1, flags);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	637
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	638 if (ret != 0) {
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	639 if (host_lookup) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	640 /* On some systems (Darwin does it) we get EINTR from getnameinfo
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	641 * somehow. Eew. So we'll just return the IP, since that doesn't seem
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	642 * to exhibit that behaviour. */
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	643 getaddrstring(addr, ret_host, ret_port, 0);
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	644 return;
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	645 } else {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	646 /* if we can't do a numeric lookup, something's gone terribly wrong */
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	647 dropbear_exit("Failed lookup: %s", gai_strerror(ret));
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	648 }
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	649 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	650
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	651 if (ret_host) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	652 *ret_host = m_strdup(host);
160 7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	653 }
568 005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	654 if (ret_port) {
005530560594 Rearrange getaddrstring() etc Matt Johnston <matt@ucc.asn.au> parents: 550 diff changeset	655 *ret_port = m_strdup(serv);
160 7ceceb46d655 Fix so that getnameinfo() is passed the address-specific structure size. This Matt Johnston <matt@ucc.asn.au> parents: 150 diff changeset	656 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	657 }
62 20563735e8b5 just checkpointing Matt Johnston <matt@ucc.asn.au> parents: 51 diff changeset	658
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	659 #ifdef DEBUG_TRACE
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 173 diff changeset	660 void printhex(const char * label, const unsigned char * buf, int len) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	661
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	662 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	663
198 65585699d980 * add a "label" argument to printhex() Matt Johnston <matt@ucc.asn.au> parents: 173 diff changeset	664 fprintf(stderr, "%s\n", label);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	665 for (i = 0; i < len; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	666 fprintf(stderr, "%02x", buf[i]);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	667 if (i % 16 == 15) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	668 fprintf(stderr, "\n");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	669 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	670 else if (i % 2 == 1) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	671 fprintf(stderr, " ");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	672 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	673 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	674 fprintf(stderr, "\n");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	675 }
764 2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	676
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	677 void printmpint(const char label, mp_int mp) {
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	678 buffer *buf = buf_new(1000);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	679 buf_putmpint(buf, mp);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	680 printhex(label, buf->data, buf->len);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	681 buf_free(buf);
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	682
2202e854d187 add printmpint() for debugging Matt Johnston <matt@ucc.asn.au> parents: 667 diff changeset	683 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	684 #endif
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	685
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	686 /* 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	687 * for '\n', '\r' and '\t'.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	688 * 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	689 * use */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	690 char * stripcontrol(const char * text) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	691
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	692 char * ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	693 int len, pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	694 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	695
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	696 len = strlen(text);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	697 ret = m_malloc(len+1);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	698
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	699 pos = 0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	700 for (i = 0; i < len; i++) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	701 if ((text[i] <= '~' && text[i] >= ' ') /* normal printable range */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	702 \|\| 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	703 ret[pos] = text[i];
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	704 pos++;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	705 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	706 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	707 ret[pos] = 0x0;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	708 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	709 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	710
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	711
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	712 /* 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	713 * 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	714 * Returns DROPBEAR_SUCCESS or DROPBEAR_FAILURE */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	715 int buf_readfile(buffer* buf, const char* filename) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	716
357 9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	717 int fd = -1;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	718 int len;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	719 int maxlen;
358 e81d3bc1dc78 Forgot variable declaration. Matt Johnston <matt@ucc.asn.au> parents: 357 diff changeset	720 int ret = DROPBEAR_FAILURE;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	721
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	722 fd = open(filename, O_RDONLY);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	723
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	724 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	725 goto out;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	726 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	727
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	728 do {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	729 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	730 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	731 if (len < 0) {
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	732 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	733 continue;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	734 }
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	735 goto out;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	736 }
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	737 buf_incrwritepos(buf, len);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	738 } while (len < maxlen && len > 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	739
357 9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	740 ret = DROPBEAR_SUCCESS;
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	741
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	742 out:
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	743 if (fd >= 0) {
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	744 m_close(fd);
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	745 }
9e2ad1023978 Handle failure reading a file (such as a key file) Matt Johnston <matt@ucc.asn.au> parents: 335 diff changeset	746 return ret;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	747 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	748
51 095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	749 /* 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	750 * authkeys file.
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	751 * 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	752 /* Only used for ~/.ssh/known_hosts and ~/.ssh/authorized_keys */
68 eee77ac31ccc cleaning up the pubkey defines Matt Johnston <matt@ucc.asn.au> parents: 64 diff changeset	753 #if defined(DROPBEAR_CLIENT) \|\| defined(ENABLE_SVR_PUBKEY_AUTH)
51 095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	754 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	755
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	756 int c = EOF;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	757
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	758 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	759 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	760
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	761 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	762
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	763 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	764 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	765 goto out;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	766 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	767
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	768 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	769 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	770
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	771 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	772 /* 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	773 * ignore that line */
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	774 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	775
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	776 out:
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	777
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	778
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	779 /* 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	780 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	781 return DROPBEAR_FAILURE;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	782 } 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	783 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	784 return DROPBEAR_SUCCESS;
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	785 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	786
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	787 }
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	788 #endif
095d689fed16 - Hostkey checking is mostly there, just aren't appending yet. Matt Johnston <matt@ucc.asn.au> parents: 45 diff changeset	789
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	790 /* make sure that the socket closes */
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	791 void m_close(int fd) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	792
883 ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	793 if (fd == -1) {
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	794 return;
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	795 }
ff597bf2cfb0 DROPBEAR_CLI_AUTH_IMMEDIATE fixed, now enabled by default Matt Johnston <matt@ucc.asn.au> parents: 871 diff changeset	796
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	797 int val;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	798 do {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	799 val = close(fd);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	800 } while (val < 0 && errno == EINTR);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	801
277 044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	802 if (val < 0 && errno != EBADF) {
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	803 /* Linux says EIO can happen */
044bc108b9b3 * Per-IP connection unauthed connection limits Matt Johnston <matt@ucc.asn.au> parents: 258 diff changeset	804 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	805 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	806 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	807
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	808 void * m_malloc(size_t size) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	809
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	810 void* ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	811
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	812 if (size == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	813 dropbear_exit("m_malloc failed");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	814 }
123 a0db9a23f6d4 calloc memory rather than mallocing it - can't hurt too much, and is Matt Johnston <matt@ucc.asn.au> parents: 117 diff changeset	815 ret = calloc(1, size);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	816 if (ret == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	817 dropbear_exit("m_malloc failed");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	818 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	819 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	820
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	821 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	822
11 f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	823 void * m_strdup(const char * str) {
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	824 char* ret;
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	825
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	826 ret = strdup(str);
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	827 if (ret == NULL) {
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	828 dropbear_exit("m_strdup failed");
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	829 }
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	830 return ret;
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	831 }
f76c9389e9e0 Mostly done with the listener changeover Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	832
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	833 void * m_realloc(void* ptr, size_t size) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	834
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	835 void *ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	836
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	837 if (size == 0) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	838 dropbear_exit("m_realloc failed");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	839 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	840 ret = realloc(ptr, size);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	841 if (ret == NULL) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	842 dropbear_exit("m_realloc failed");
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	843 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	844 return ret;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	845 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	846
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	847 /* Clear the data, based on the method in David Wheeler's
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	848 * "Secure Programming for Linux and Unix HOWTO" */
161 b9d3f725e00b 0.44 release changes Matt Johnston <matt@ucc.asn.au> parents: 160 diff changeset	849 /* Beware of calling this from within dbutil.c - things might get
b9d3f725e00b 0.44 release changes Matt Johnston <matt@ucc.asn.au> parents: 160 diff changeset	850 * optimised away */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	851 void m_burn(void *data, unsigned int len) {
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	852 volatile char *p = data;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	853
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	854 if (data == NULL)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	855 return;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	856 while (len--) {
655 76e780c74a5e - Burn buffers to 0x00 instead Matt Johnston <matt@ucc.asn.au> parents: 639 diff changeset	857 *p++ = 0x0;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	858 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	859 }
26 0969767bca0d snapshot of stuff Matt Johnston <matt@ucc.asn.au> parents: 11 diff changeset	860
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	861
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	862 void setnonblocking(int fd) {
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	863
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	864 TRACE(("setnonblocking: %d", fd))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	865
2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	866 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	867 if (errno == ENODEV) {
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	868 /* 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	869 * 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	870 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	871 } else {
257f09a63dab * add SSH_ASKPASS support (based on patch from Paul Whittaker Matt Johnston <matt@ucc.asn.au> parents: 172 diff changeset	872 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	873 }
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	874 }
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	875 TRACE(("leave setnonblocking"))
109 2e9d1f29c50f merge of 50be59810e462f9f44f55e421227d6aa0b31982b Matt Johnston <matt@ucc.asn.au> parents: 108 diff changeset	876 }
425 1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	877
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	878 void disallow_core() {
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	879 struct rlimit lim;
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	880 lim.rlim_cur = lim.rlim_max = 0;
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	881 setrlimit(RLIMIT_CORE, &lim);
1afa503e33f5 Disable core dumps Matt Johnston <matt@ucc.asn.au> parents: 410 diff changeset	882 }
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	883
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	884 /* 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	885 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	886 unsigned long l;
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	887 errno = 0;
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	888 l = strtoul(str, NULL, 10);
492 b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	889 /* 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	890 * I've looked at mention it in their manpage */
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	891 if ((l == 0 && errno == EINVAL)
30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	892 \|\| (l == ULONG_MAX && errno == ERANGE)
30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	893 \|\| (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	894 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	895 } else {
864 30ab30e46452 Fix some warnings Matt Johnston <matt@ucc.asn.au> parents: 835 diff changeset	896 *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	897 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	898 }
b956d6151600 Replace calls to strtoul() with a helper m_str_to_uint() Matt Johnston <matt@ucc.asn.au> parents: 490 diff changeset	899 }
817 a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	900
995 6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	901 /* Returns malloced path. Only expands ~ in first character */
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	902 char * expand_tilde(const char *inpath) {
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	903 struct passwd *pw = NULL;
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	904 if (inpath[0] == '~') {
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	905 pw = getpwuid(getuid());
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	906 if (pw && pw->pw_dir) {
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	907 int len = strlen(inpath) + strlen(pw->pw_dir) + 1;
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	908 char *buf = m_malloc(len);
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	909 snprintf(buf, len, "%s/%s", pw->pw_dir, &inpath[1]);
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	910 return buf;
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	911 }
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	912 }
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	913
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	914 /* Fallback */
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	915 return m_strdup(inpath);
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	916 }
6fb4c010c448 Default client key path ~/.ssh/id_dropbear Matt Johnston <matt@ucc.asn.au> parents: 962 diff changeset	917
817 a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	918 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	919 {
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	920 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	921 uint8_t c = 0;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	922 size_t i;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	923 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	924 {
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	925 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	926 }
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	927 return c;
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	928 }
a625f9e135a4 Constant time memcmp for the hmac and password crypt Matt Johnston <matt@ucc.asn.au> parents: 753 diff changeset	929
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	930 #if defined(__linux__) && defined(SYS_clock_gettime)
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	931 /* CLOCK_MONOTONIC_COARSE was added in Linux 2.6.32 but took a while to
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	932 reach userspace include headers */
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	933 #ifndef CLOCK_MONOTONIC_COARSE
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	934 #define CLOCK_MONOTONIC_COARSE 6
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	935 #endif
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	936 static clockid_t get_linux_clock_source() {
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	937 struct timespec ts;
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	938 if (syscall(SYS_clock_gettime, CLOCK_MONOTONIC_COARSE, &ts) == 0) {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	939 return CLOCK_MONOTONIC_COARSE;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	940 }
953 356a25a108a3 Fix some format string warnings Matt Johnston <matt@ucc.asn.au> parents: 952 diff changeset	941
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	942 if (syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &ts) == 0) {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	943 return CLOCK_MONOTONIC;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	944 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	945 return -1;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	946 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	947 #endif
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	948
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	949 time_t monotonic_now() {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	950 #if defined(__linux__) && defined(SYS_clock_gettime)
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	951 static clockid_t clock_source = -2;
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	952
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	953 if (clock_source == -2) {
953 356a25a108a3 Fix some format string warnings Matt Johnston <matt@ucc.asn.au> parents: 952 diff changeset	954 /* First run, find out which one works.
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	955 -1 will fall back to time() */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	956 clock_source = get_linux_clock_source();
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	957 }
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	958
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	959 if (clock_source >= 0) {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	960 struct timespec ts;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	961 if (syscall(SYS_clock_gettime, clock_source, &ts) != 0) {
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	962 /* Intermittent clock failures should not happen */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	963 dropbear_exit("Clock broke");
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	964 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	965 return ts.tv_sec;
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	966 }
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	967 #endif /* linux clock_gettime */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	968
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	969 #if defined(HAVE_MACH_ABSOLUTE_TIME)
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	970 /* OS X, see https://developer.apple.com/library/mac/qa/qa1398/_index.html */
930 8f04e36622c0 Fix monotonic_now() on OS X Matt Johnston <matt@ucc.asn.au> parents: 928 diff changeset	971 static mach_timebase_info_data_t timebase_info;
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	972 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	973 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	974 }
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	975 return mach_absolute_time() * timebase_info.numer / timebase_info.denom
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	976 / 1e9;
952 ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	977 #endif /* osx mach_absolute_time */
ef8d939de3dd Fix clock_gettime handling Matt Johnston <matt@ucc.asn.au> parents: 936 diff changeset	978
928 7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	979 /* Fallback for everything else - this will sometimes go backwards */
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	980 return time(NULL);
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	981 }
7cd89d4e0335 Add new monotonic_now() wrapper so that timeouts are unaffected by Matt Johnston <matt@ucc.asn.au> parents: 883 diff changeset	982
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	983
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	984 struct dropbear_progress_connection
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	985 {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	986 struct addrinfo *res;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	987 struct addrinfo *res_iter;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	988
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	989 char remotehost, remoteport; /* For error reporting */
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	990
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	991 connect_callback cb;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	992 void *cb_data;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	993
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	994 struct Queue writequeue; / A queue of encrypted packets to send with TCP fastopen,
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	995 or NULL. */
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	996
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	997 int sock;
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	998
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	999 char* errstring;
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1000 };
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1001
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1002 /* Deallocate a progress connection. Removes from the pending list if iter!=NULL.
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1003 Does not close sockets */
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1004 static void remove_connect(struct dropbear_progress_connection c, m_list_elem iter) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1005 if (c->res) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1006 freeaddrinfo(c->res);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1007 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1008 m_free(c->remotehost);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1009 m_free(c->remoteport);
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1010 m_free(c->errstring);
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1011 m_free(c);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1012
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1013 if (iter) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1014 list_remove(iter);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1015 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1016 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1017
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1018 static void cancel_callback(int result, int sock, void* UNUSED(data), const char* UNUSED(errstring)) {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1019 if (result == DROPBEAR_SUCCESS)
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1020 {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1021 m_close(sock);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1022 }
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1023 }
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1024
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1025 void cancel_connect(struct dropbear_progress_connection *c) {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1026 c->cb = cancel_callback;
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1027 c->cb_data = NULL;
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1028 }
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1029
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1030 static void connect_try_next(struct dropbear_progress_connection *c) {
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1031 int err = EADDRNOTAVAIL;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1032 struct addrinfo *r;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1033
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1034 if (!c->res_iter) {
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1035 return;
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1036 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1037
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1038 for (r = c->res_iter; r; r = r->ai_next)
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1039 {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1040 assert(c->sock == -1);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1041
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1042 c->sock = socket(c->res_iter->ai_family, c->res_iter->ai_socktype, c->res_iter->ai_protocol);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1043 if (c->sock < 0) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1044 err = errno;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1045 continue;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1046 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1047
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1048 ses.maxfd = MAX(ses.maxfd, c->sock);
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1049 setnonblocking(c->sock);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1050
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1051 #if defined(__linux__) && defined(TCP_DEFER_ACCEPT)
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1052 set_piggyback_ack(sock);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1053 #endif
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1054
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1055 if (connect(c->sock, r->ai_addr, r->ai_addrlen) < 0) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1056 if (errno == EINPROGRESS) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1057 TRACE(("Connect in progress"))
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1058 break;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1059 } else {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1060 err = errno;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1061 close(c->sock);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1062 c->sock = -1;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1063 continue;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1064 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1065 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1066
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1067 break; /* Success. Treated the same as EINPROGRESS */
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1068 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1069
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1070 if (r) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1071 c->res_iter = r->ai_next;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1072 } else {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1073 c->res_iter = NULL;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1074 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1075
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1076 if (c->sock >= 0 \|\| (errno == EINPROGRESS)) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1077 /* Success */
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1078 set_sock_nodelay(c->sock);
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1079 return;
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1080 } else {
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1081 if (!c->res_iter)
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1082 {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1083
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1084 }
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1085 /* XXX - returning error message through */
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1086 #if 0
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1087 /* Failed */
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1088 if (errstring != NULL && *errstring == NULL) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1089 int len;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1090 len = 20 + strlen(strerror(err));
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1091 errstring = (char)m_malloc(len);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1092 snprintf(*errstring, len, "Error connecting: %s", strerror(err));
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1093 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1094 TRACE(("Error connecting: %s", strerror(err)))
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1095 #endif
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1096 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1097 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1098
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1099 /* Connect via TCP to a host. */
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1100 struct dropbear_progress_connection connect_remote(const char remotehost, const char* remoteport,
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1101 connect_callback cb, void* cb_data)
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1102 {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1103 struct dropbear_progress_connection *c = NULL;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1104 int err;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1105 struct addrinfo hints;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1106
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1107 c = m_malloc(sizeof(*c));
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1108 c->remotehost = m_strdup(remotehost);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1109 c->remoteport = m_strdup(remoteport);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1110 c->sock = -1;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1111 c->cb = cb;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1112 c->cb_data = cb_data;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1113
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1114 list_append(&ses.conn_pending, c);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1115
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1116 memset(&hints, 0, sizeof(hints));
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1117 hints.ai_socktype = SOCK_STREAM;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1118 hints.ai_family = PF_UNSPEC;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1119
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1120 err = getaddrinfo(remotehost, remoteport, &hints, &c->res);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1121 if (err) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1122 int len;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1123 len = 100 + strlen(gai_strerror(err));
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1124 c->errstring = (char*)m_malloc(len);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1125 snprintf(c->errstring, len, "Error resolving '%s' port '%s'. %s",
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1126 remotehost, remoteport, gai_strerror(err));
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1127 TRACE(("Error resolving: %s", gai_strerror(err)))
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1128 return NULL;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1129 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1130
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1131 c->res_iter = c->res;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1132
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1133 /* Set one going */
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1134 connect_try_next(c);
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1135
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1136 return c;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1137 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1138
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1139
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1140 void set_connect_fds(fd_set *writefd) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1141 m_list_elem *iter;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1142 TRACE(("enter handle_connect_fds"))
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1143 for (iter = ses.conn_pending.first; iter; iter = iter->next) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1144 struct dropbear_progress_connection *c = iter->item;
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1145 /* Set one going */
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1146 while (c->res_iter && c->sock < 0)
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1147 {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1148 connect_try_next(c);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1149 }
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1150 if (c->sock >= 0) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1151 FD_SET(c->sock, writefd);
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1152 } else {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1153 m_list_elem *remove_iter;
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1154 /* Final failure */
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1155 if (!c->errstring) {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1156 c->errstring = m_strdup("unexpected failure");
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1157 }
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1158 c->cb(DROPBEAR_FAILURE, -1, c->cb_data, c->errstring);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1159 /* Safely remove without invalidating iter */
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1160 remove_iter = iter;
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1161 iter = iter->prev;
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1162 remove_connect(c, remove_iter);
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1163 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1164 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1165 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1166
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1167 void handle_connect_fds(fd_set *writefd) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1168 m_list_elem *iter;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1169 TRACE(("enter handle_connect_fds"))
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1170 for (iter = ses.conn_pending.first; iter; iter = iter->next) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1171 int val;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1172 socklen_t vallen = sizeof(val);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1173 struct dropbear_progress_connection *c = iter->item;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1174
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1175 if (!FD_ISSET(c->sock, writefd)) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1176 continue;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1177 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1178
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1179 TRACE(("handling %s port %s socket %d", c->remotehost, c->remoteport, c->sock));
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1180
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1181 if (getsockopt(c->sock, SOL_SOCKET, SO_ERROR, &val, &vallen) != 0) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1182 TRACE(("handle_connect_fds getsockopt(%d) SO_ERROR failed: %s", c->sock, strerror(errno)))
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1183 /* This isn't expected to happen - Unix has surprises though, continue gracefully. */
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1184 m_close(c->sock);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1185 c->sock = -1;
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1186 } else if (val != 0) {
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1187 /* Connect failed */
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1188 TRACE(("connect to %s port %s failed.", c->remotehost, c->remoteport))
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1189 m_close(c->sock);
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1190 c->sock = -1;
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1191
1025 02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1192 m_free(c->errstring);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1193 c->errstring = strerror(val);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1194 } else {
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1195 /* New connection has been established */
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1196 c->cb(DROPBEAR_SUCCESS, c->sock, c->cb_data, NULL);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1197 remove_connect(c, iter);
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1198 TRACE(("leave handle_connect_fds - success"))
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1199 /* Must return here - remove_connect() invalidates iter */
02baa0b334e8 async connections working Matt Johnston <matt@ucc.asn.au> parents: 1024 diff changeset	1200 return;
1024 aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1201 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1202 }
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1203 TRACE(("leave handle_connect_fds - end iter"))
aac0095dc3b4 work in progress for async connect Matt Johnston <matt@ucc.asn.au> parents: 1023 diff changeset	1204 }

Mercurial > dropbear

annotate dbutil.c @ 1025:02baa0b334e8 fastopen