1 /* 2 * Copyright (c) 2019 Apple Inc. All rights reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef __mDNSFeatures_h 18 #define __mDNSFeatures_h 19 20 #if MDNSRESPONDER_PLATFORM_APPLE 21 #include "ApplePlatformFeatures.h" 22 #endif 23 24 // Common Features 25 26 #undef MDNSRESPONDER_PLATFORM_COMMON 27 #define MDNSRESPONDER_PLATFORM_COMMON 1 28 29 // Feature: DNS Push 30 // Radar: <rdar://problem/23226275> 31 // Enabled: Yes, for Apple. 32 33 #if !defined(MDNSRESPONDER_SUPPORTS_COMMON_DNS_PUSH) 34 #if defined(MDNSRESPONDER_PLATFORM_APPLE) && MDNSRESPONDER_PLATFORM_APPLE 35 #define MDNSRESPONDER_SUPPORTS_COMMON_DNS_PUSH 1 36 #else 37 #define MDNSRESPONDER_SUPPORTS_COMMON_DNS_PUSH 0 38 #endif 39 #endif 40 41 #define HAS_FEATURE_CAT(A, B) A ## B 42 #define HAS_FEATURE_CHECK_0 1 43 #define HAS_FEATURE_CHECK_1 1 44 #define HAS_FEATURE(X) ((X) / HAS_FEATURE_CAT(HAS_FEATURE_CHECK_, X)) 45 46 #define MDNSRESPONDER_SUPPORTS(PLATFORM, FEATURE) \ 47 (defined(MDNSRESPONDER_PLATFORM_ ## PLATFORM) && MDNSRESPONDER_PLATFORM_ ## PLATFORM && \ 48 HAS_FEATURE(MDNSRESPONDER_SUPPORTS_ ## PLATFORM ## _ ## FEATURE)) 49 50 #endif // __mDNSFeatures_h 51