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37bb75f740
1. Very large RRSIG RRsets included in a negative cache can trigger an assertion failure that will crash named (BIND 9 DNS) due to an off-by-one error in a buffer size check. This bug affects all resolving name servers, whether DNSSEC validation is enabled or not, on all BIND versions prior to today. There is a possibility of malicious exploitation of this bug by remote users. 2. Named could fail to validate zones listed in a DLV that validated insecure without using DLV and had DS records in the parent zone. Add a patch provided by ru@ and confirmed by ISC to fix a crash at shutdown time when a SIG(0) key is being used.
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
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* Copyright (C) 2004, 2005, 2007, 2008 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1997-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: assertions.c,v 1.23 2008-10-15 23:47:31 tbox Exp $ */
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/*! \file */
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <isc/assertions.h>
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#include <isc/msgs.h>
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/*%
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* Forward.
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*/
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/* coverity[+kill] */
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static void
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default_callback(const char *, int, isc_assertiontype_t, const char *);
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/*%
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* Public.
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*/
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LIBISC_EXTERNAL_DATA isc_assertioncallback_t isc_assertion_failed =
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default_callback;
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/*% Set callback. */
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void
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isc_assertion_setcallback(isc_assertioncallback_t cb) {
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if (cb == NULL)
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isc_assertion_failed = default_callback;
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else
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isc_assertion_failed = cb;
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}
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/*% Type to Text */
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const char *
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isc_assertion_typetotext(isc_assertiontype_t type) {
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const char *result;
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/*
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* These strings have purposefully not been internationalized
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* because they are considered to essentially be keywords of
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* the ISC development environment.
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*/
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switch (type) {
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case isc_assertiontype_require:
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result = "REQUIRE";
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break;
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case isc_assertiontype_ensure:
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result = "ENSURE";
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break;
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case isc_assertiontype_insist:
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result = "INSIST";
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break;
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case isc_assertiontype_invariant:
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result = "INVARIANT";
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break;
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default:
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result = NULL;
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}
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return (result);
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}
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/*
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* Private.
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*/
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static void
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default_callback(const char *file, int line, isc_assertiontype_t type,
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const char *cond)
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{
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fprintf(stderr, "%s:%d: %s(%s) %s.\n",
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file, line, isc_assertion_typetotext(type), cond,
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isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
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ISC_MSG_FAILED, "failed"));
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fflush(stderr);
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abort();
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/* NOTREACHED */
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}
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