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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.
79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/*
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* Portions Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
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* Portions Copyright (C) 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 AND NOMINUM DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Portions Copyright (C) 2001 Nominum, Inc.
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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 AND NOMINUM DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: base64.c,v 1.8 2007-08-28 07:20:43 tbox Exp $ */
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/*! \file */
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#include <config.h>
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#include <isc/base64.h>
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#include <isc/buffer.h>
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#include <isc/region.h>
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#include <isc/result.h>
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#include <isccc/base64.h>
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#include <isccc/result.h>
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#include <isccc/util.h>
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isc_result_t
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isccc_base64_encode(isccc_region_t *source, int wordlength,
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const char *wordbreak, isccc_region_t *target)
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{
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isc_region_t sr;
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isc_buffer_t tb;
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isc_result_t result;
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sr.base = source->rstart;
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sr.length = source->rend - source->rstart;
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isc_buffer_init(&tb, target->rstart, target->rend - target->rstart);
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result = isc_base64_totext(&sr, wordlength, wordbreak, &tb);
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if (result != ISC_R_SUCCESS)
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return (result);
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source->rstart = source->rend;
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target->rstart = isc_buffer_used(&tb);
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return (ISC_R_SUCCESS);
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}
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isc_result_t
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isccc_base64_decode(const char *cstr, isccc_region_t *target) {
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isc_buffer_t b;
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isc_result_t result;
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isc_buffer_init(&b, target->rstart, target->rend - target->rstart);
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result = isc_base64_decodestring(cstr, &b);
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if (result != ISC_R_SUCCESS)
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return (result);
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target->rstart = isc_buffer_used(&b);
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return (ISC_R_SUCCESS);
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}
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