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https://github.com/isc-projects/bind9.git
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b53d1d7069
The mapping functions between isc_result_t and dns_rcode_t could return
both isc_result_t values not defined in the header and dns_rcode_t
values not defined in the header because it blindly maps anything
withing full 12-bits defined for RCODEs to isc_result_t and back.
Refactor the dns_result_{from,to}rcode() functions to always return
valid isc_result_t and dns_rcode_t values by explicitly mapping the
values to each other and returning DNS_R_SERVFAIL (dns_rcode_servfail)
when encountering value out of the defined range.
119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* SPDX-License-Identifier: MPL-2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, you can obtain one at https://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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/*! \file */
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#include <isc/once.h>
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#include <isc/result.h>
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#include <isc/util.h>
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#include <dns/result.h>
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dns_rcode_t
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dns_result_torcode(isc_result_t result) {
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/* Try to supply an appropriate rcode. */
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switch (result) {
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case DNS_R_NOERROR:
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case ISC_R_SUCCESS:
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return (dns_rcode_noerror);
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case DNS_R_FORMERR:
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case ISC_R_BADBASE64:
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case ISC_R_RANGE:
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case ISC_R_UNEXPECTEDEND:
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case DNS_R_BADAAAA:
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case DNS_R_BADCKSUM:
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case DNS_R_BADCLASS:
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case DNS_R_BADLABELTYPE:
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case DNS_R_BADPOINTER:
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case DNS_R_BADTTL:
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case DNS_R_BADZONE:
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case DNS_R_EXTRADATA:
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case DNS_R_LABELTOOLONG:
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case DNS_R_NOREDATA:
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case DNS_R_SYNTAX:
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case DNS_R_TEXTTOOLONG:
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case DNS_R_TOOMANYHOPS:
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case DNS_R_TSIGERRORSET:
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case DNS_R_UNKNOWN:
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case DNS_R_NAMETOOLONG:
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case DNS_R_OPTERR:
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return (dns_rcode_formerr);
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case DNS_R_SERVFAIL:
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return (dns_rcode_servfail);
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case DNS_R_NXDOMAIN:
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return (dns_rcode_nxdomain);
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case DNS_R_NOTIMP:
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return (dns_rcode_notimp);
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case DNS_R_REFUSED:
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case DNS_R_DISALLOWED:
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return (dns_rcode_refused);
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case DNS_R_YXDOMAIN:
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return (dns_rcode_yxdomain);
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case DNS_R_YXRRSET:
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return (dns_rcode_yxrrset);
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case DNS_R_NXRRSET:
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return (dns_rcode_nxrrset);
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case DNS_R_NOTAUTH:
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case DNS_R_TSIGVERIFYFAILURE:
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case DNS_R_CLOCKSKEW:
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return (dns_rcode_notauth);
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case DNS_R_NOTZONE:
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return (dns_rcode_notzone);
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case DNS_R_RCODE11:
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case DNS_R_RCODE12:
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case DNS_R_RCODE13:
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case DNS_R_RCODE14:
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case DNS_R_RCODE15:
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return (result - DNS_R_NOERROR);
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case DNS_R_BADVERS:
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return (dns_rcode_badvers);
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case DNS_R_BADCOOKIE:
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return (dns_rcode_badcookie);
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default:
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return (dns_rcode_servfail);
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}
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}
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isc_result_t
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dns_result_fromrcode(dns_rcode_t rcode) {
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switch (rcode) {
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case dns_rcode_noerror:
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return (DNS_R_NOERROR);
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case dns_rcode_formerr:
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return (DNS_R_FORMERR);
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case dns_rcode_servfail:
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return (DNS_R_SERVFAIL);
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case dns_rcode_nxdomain:
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return (DNS_R_NXDOMAIN);
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case dns_rcode_notimp:
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return (DNS_R_NOTIMP);
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case dns_rcode_refused:
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return (DNS_R_REFUSED);
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case dns_rcode_yxdomain:
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return (DNS_R_YXDOMAIN);
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case dns_rcode_yxrrset:
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return (DNS_R_YXRRSET);
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case dns_rcode_nxrrset:
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return (DNS_R_NXRRSET);
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case dns_rcode_notauth:
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return (DNS_R_NOTAUTH);
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case dns_rcode_notzone:
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return (DNS_R_NOTZONE);
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case dns_rcode_badvers:
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return (DNS_R_BADVERS);
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case dns_rcode_badcookie:
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return (DNS_R_BADCOOKIE);
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default:
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return (DNS_R_SERVFAIL);
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}
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}
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