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The sources can be obtained via: https://opensource.apple.com/tarballs/mDNSResponder/mDNSResponder-878.1.1.tar.gz Update #3522.
42 lines
1.9 KiB
C
42 lines
1.9 KiB
C
/*
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* Copyright (c) 2017 Apple Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __DNS64State_h
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#define __DNS64State_h
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typedef enum
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{
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kDNS64State_Initial = 0, // Initial state.
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kDNS64State_PrefixDiscovery = 1, // Querying for "ipv4only.arpa." AAAA records to discover NAT64 IPv6 prefix(es).
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kDNS64State_PrefixDiscoveryPTR = 2, // Same as PrefixDiscovery, but discoverying for "ip6.arpa." PTR record queries.
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kDNS64State_QueryA = 3, // Querying for A record with same QNAME as AAAA record query.
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kDNS64State_QueryA2 = 4, // Continuing A record query after being answered with a synthesizable A record.
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kDNS64State_QueryAAAA = 5, // Querying for original AAAA record.
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kDNS64State_QueryPTR = 6, // Determining whether to query for reverse IPV4 or reverse IPv6 PTR record.
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kDNS64State_ReverseIPv4 = 7, // Querying for reverse IPV4 (in-addr.arpa.) PTR record.
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kDNS64State_ReverseIPv6 = 8 // Querying for the original reverse IPv6 (ip6.arpa.) PTR record.
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} DNS64State;
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typedef struct
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{
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DNS64State state; // Current state.
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mDNSu8 qnameStash[15]; // Temporary space to hold the up to 15 bytes that are displaced in a DNSQuestion's qname
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// when it's set to "ipv4only.arpa." during prefix discovery.
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} DNS64;
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#endif // __DNS64State_h
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