view debug.h @ 1306:34e6127ef02e

merge fixes from PuTTY import.c toint() from misc.c (revids are from hggit conversion) changeset: 4620:60a336a6c85c user: Simon Tatham <[email protected]> date: Thu Feb 25 20:26:33 2016 +0000 files: import.c description: Fix potential segfaults in reading OpenSSH's ASN.1 key format. The length coming back from ber_read_id_len might have overflowed, so treat it as potentially negative. Also, while I'm here, accumulate it inside ber_read_id_len as an unsigned, so as to avoid undefined behaviour on integer overflow, and toint() it before return. Thanks to Hanno Böck for spotting this, with the aid of AFL. (cherry picked from commit 5b7833cd474a24ec098654dcba8cb9509f3bf2c1) Conflicts: import.c (cherry-picker's note: resolving the conflict involved removing an entire section of the original commit which fixed ECDSA code not present on this branch) changeset: 4619:9c6c638d98d8 user: Simon Tatham <[email protected]> date: Sun Jul 14 10:45:54 2013 +0000 files: import.c ssh.c sshdss.c sshpubk.c sshrsa.c description: Tighten up a lot of casts from unsigned to int which are read by one of the GET_32BIT macros and then used as length fields. Missing bounds checks against zero have been added, and also I've introduced a helper function toint() which casts from unsigned to int in such a way as to avoid C undefined behaviour, since I'm not sure I trust compilers any more to do the obviously sensible thing. [originally from svn r9918] changeset: 4618:3957829f24d3 user: Simon Tatham <[email protected]> date: Mon Jul 08 22:36:04 2013 +0000 files: import.c sshdss.c sshrsa.c description: Add an assortment of extra safety checks. [originally from svn r9896] changeset: 4617:2cddee0bce12 user: Jacob Nevins <[email protected]> date: Wed Dec 07 00:24:45 2005 +0000 files: import.c description: Institutional failure to memset() things pointed at rather than pointers. Things should now be zeroed and memory not leaked. Spotted by Brant Thomsen. [originally from svn r6476] changeset: 4616:24ac78a9c71d user: Simon Tatham <[email protected]> date: Wed Feb 11 13:58:27 2004 +0000 files: import.c description: Jacob's last-minute testing found a couple of trivial bugs in import.c, and my attempts to reproduce them in cmdgen found another one there :-) [originally from svn r3847] changeset: 4615:088d39a73db0 user: Simon Tatham <[email protected]> date: Thu Jan 22 18:52:49 2004 +0000 files: import.c description: Placate some gcc warnings. [originally from svn r3761] changeset: 4614:e4288bad4d93 parent: 1758:108b8924593d user: Simon Tatham <[email protected]> date: Fri Oct 03 21:21:23 2003 +0000 files: import.c description: My ASN.1 decoder returned wrong IDs for anything above 0x1E! Good job it's never had to yet. Ahem. [originally from svn r3479]
author Matt Johnston <matt@ucc.asn.au>
date Tue, 12 Jul 2016 23:00:01 +0800
parents deed0571cacc
children 750ec4ec4cbe
line wrap: on
line source

/*
 * Dropbear - a SSH2 server
 * 
 * Copyright (c) 2002,2003 Matt Johnston
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE. */

#ifndef DROPBEAR_DEBUG_H_
#define DROPBEAR_DEBUG_H_

#include "includes.h"

/* Debugging */

/* Work well for valgrind - don't clear environment, be nicer with signals
 * etc. Don't use this normally, it might cause problems */
/* #define DEBUG_VALGRIND */

/* Define this to compile in trace debugging printf()s. 
 * You'll need to run programs with "-v" to turn this on.
 *
 * Caution: Don't use this in an unfriendly environment (ie unfirewalled),
 * since the printing may not sanitise strings etc. This will add a reasonable
 * amount to your executable size. */
/*#define DEBUG_TRACE*/

/* All functions writing to the cleartext payload buffer call
 * CHECKCLEARTOWRITE() before writing. This is only really useful if you're
 * attempting to track down a problem */
/*#define CHECKCLEARTOWRITE() assert(ses.writepayload->len == 0 && \
		ses.writepayload->pos == 0)*/

#define CHECKCLEARTOWRITE()

/* Define this, compile with -pg and set GMON_OUT_PREFIX=gmon to get gmon
 * output when Dropbear forks. This will allow it gprof to be used.
 * It's useful to run dropbear -F, so you don't fork as much */
/* (This is Linux specific) */
/*#define DEBUG_FORKGPROF*/

/* A couple of flags, not usually useful, and mightn't do anything */

/*#define DEBUG_KEXHASH*/
/*#define DEBUG_RSA*/

/* you don't need to touch this block */
#ifdef DEBUG_TRACE
#define TRACE(X) dropbear_trace X;
#define TRACE2(X) dropbear_trace2 X;
#else /*DEBUG_TRACE*/
#define TRACE(X)
#define TRACE2(X)
#endif /*DEBUG_TRACE*/

/* To debug with GDB it is easier to run with no forking of child processes.
   You will need to pass "-F" as well. */
/* #define DEBUG_NOFORK */


/* For testing as non-root on shadowed systems, include the crypt of a password
 * here. You can then log in as any user with this password. Ensure that you
 * make your own password, and are careful about using this. This will also
 * disable some of the chown pty code etc*/
/* #define DEBUG_HACKCRYPT "hL8nrFDt0aJ3E" */ /* this is crypt("password") */

#endif