mDNSMacOSX/ApplePlatformFeatures.h

   1 /*
   2  * Copyright (c) 2018-2019 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 __ApplePlatformFeatures_h
  18 #define __ApplePlatformFeatures_h
  19
  20 #include <TargetConditionals.h>
  21
  22 // Feature: Bonjour-On-Demand
  23 // Radar:   <rdar://problem/23523784>
  24 // Enabled: Yes.
  25
  26 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_BONJOUR_ON_DEMAND)
  27     #define MDNSRESPONDER_SUPPORTS_APPLE_BONJOUR_ON_DEMAND          1
  28 #endif
  29
  30 // Feature: Cache memory limit
  31 // Radar:   <rdar://problem/15629764>
  32 // Enabled: Yes, but only for device OSes, such as iOS, tvOS, and watchOS, i.e., when TARGET_OS_IPHONE is 1.
  33
  34 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_CACHE_MEM_LIMIT)
  35     #if !defined(TARGET_OS_IPHONE)
  36         #error "Expected TARGET_OS_IPHONE to be defined."
  37     #endif
  38     #if TARGET_OS_IPHONE
  39         #define MDNSRESPONDER_SUPPORTS_APPLE_CACHE_MEM_LIMIT        1
  40     #else
  41         #define MDNSRESPONDER_SUPPORTS_APPLE_CACHE_MEM_LIMIT        0
  42     #endif
  43 #endif
  44
  45 // Feature: D2D
  46 // Radar:   <rdar://problem/28062515>
  47 // Enabled: Yes.
  48
  49 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_D2D)
  50     #define MDNSRESPONDER_SUPPORTS_APPLE_D2D                        1
  51 #endif
  52
  53 // Feature: DNS64 IPv6 synthesis.
  54 // Radar:   <rdar://problem/32297396>
  55 // Enabled: Yes, but only for iOS and macOS, which support the DNS proxy network extension.
  56
  57 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_DNS64)
  58     #if (!defined(TARGET_OS_IOS) || !defined(TARGET_OS_OSX))
  59         #error "Expected TARGET_OS_IOS and TARGET_OS_OSX to be defined."
  60     #endif
  61     #if (TARGET_OS_IOS || TARGET_OS_OSX)
  62         #define MDNSRESPONDER_SUPPORTS_APPLE_DNS64                  1
  63     #else
  64         #define MDNSRESPONDER_SUPPORTS_APPLE_DNS64                  0
  65     #endif
  66 #endif
  67
  68 // Feature: DNS-SD XPC service
  69 // Radar:   <rdar://problem/43866363>
  70 // Enabled: Yes.
  71
  72 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_DNSSD_XPC_SERVICE)
  73     #define MDNSRESPONDER_SUPPORTS_APPLE_DNSSD_XPC_SERVICE          1
  74 #endif
  75
  76 // Feature: Ignore /etc/hosts file on customer builds.
  77 // Radar:   <rdar://problem/34745220>
  78 // Enabled: Yes, except for macOS.
  79
  80 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_IGNORE_HOSTS_FILE)
  81     #if !defined(TARGET_OS_OSX)
  82         #error "Expected TARGET_OS_OSX to be defined."
  83     #endif
  84     #if !TARGET_OS_OSX
  85         #define MDNSRESPONDER_SUPPORTS_APPLE_IGNORE_HOSTS_FILE      1
  86     #else
  87         #define MDNSRESPONDER_SUPPORTS_APPLE_IGNORE_HOSTS_FILE      0
  88     #endif
  89 #endif
  90
  91 // Feature: AWD metrics collection
  92 // Radar:   <rdar://problem/24146300>
  93 // Enabled: Yes, but for iOS only.
  94
  95 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_METRICS)
  96     #if !defined(TARGET_OS_IOS)
  97         #error "Expected TARGET_OS_IOS to be defined."
  98     #endif
  99     #if TARGET_OS_IOS
 100         #define MDNSRESPONDER_SUPPORTS_APPLE_METRICS                1
 101     #else
 102         #define MDNSRESPONDER_SUPPORTS_APPLE_METRICS                0
 103     #endif
 104 #endif
 105
 106 // Feature: Support for having finer granularity of log redaction, by using os_log based-log routine.
 107 // Radar:   <rdar://problem/42814956>
 108 // Enabled: Yes.
 109
 110 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_OS_LOG)
 111     #define MDNSRESPONDER_SUPPORTS_APPLE_OS_LOG                     1
 112 #endif
 113
 114 // Feature: Preallocate mDNSResponder's cache memory. For testing purposes only.
 115 // Radar:   <rdar://problem/29545890>
 116 // Enabled: No.
 117
 118 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_PREALLOCATED_CACHE)
 119     #define MDNSRESPONDER_SUPPORTS_APPLE_PREALLOCATED_CACHE         0
 120 #endif
 121
 122 // Feature: Randomized AWDL Hostname
 123 // Radar:   <rdar://problem/47525004>
 124 // Enabled: Yes.
 125
 126 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_RANDOM_AWDL_HOSTNAME)
 127     #define MDNSRESPONDER_SUPPORTS_APPLE_RANDOM_AWDL_HOSTNAME       1
 128 #endif
 129
 130 // Feature: Reachability trigger
 131 // Radar:   <rdar://problem/11374446>
 132 // Enabled: Yes.
 133
 134 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_REACHABILITY_TRIGGER)
 135     #define MDNSRESPONDER_SUPPORTS_APPLE_REACHABILITY_TRIGGER       1
 136 #endif
 137
 138 // Feature: "SlowActivation" processing for flapping interfaces.
 139 //          Disabled to address stale Bonjour record issues during flapping network interface transitions.
 140 // Radar:   <rdar://problem/44694746>
 141 // Enabled: No.
 142
 143 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_SLOW_ACTIVATION)
 144     #define MDNSRESPONDER_SUPPORTS_APPLE_SLOW_ACTIVATION            0
 145 #endif
 146
 147 // Feature: Suspicious Reply Defense
 148 // Radar:   <rdar://problem/50050767>
 149 // Enabled: Yes.
 150
 151 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_SUSPICIOUS_REPLY_DEFENSE)
 152     #define MDNSRESPONDER_SUPPORTS_APPLE_SUSPICIOUS_REPLY_DEFENSE   1
 153 #endif
 154
 155 // Feature: Symptoms Reporting
 156 // Radar:   <rdar://problem/20194922>
 157 // Enabled: Yes.
 158
 159 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_SYMPTOMS)
 160     #define MDNSRESPONDER_SUPPORTS_APPLE_SYMPTOMS                   1
 161 #endif
 162
 163 // Feature: Support for performing dot-local queries via mDNS and DNS in parallel.
 164 // Radar:   <rdar://problem/4786302>
 165 // Enabled: Yes.
 166
 167 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_UNICAST_DOTLOCAL)
 168     #define MDNSRESPONDER_SUPPORTS_APPLE_UNICAST_DOTLOCAL           1
 169 #endif
 170
 171 // Feature: Allow browses and registrations over interfaces that aren't ready yet.
 172 // Radar:   <rdar://problem/20181903>
 173 // Enabled: Yes.
 174
 175 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_UNREADY_INTERFACES)
 176     #define MDNSRESPONDER_SUPPORTS_APPLE_UNREADY_INTERFACES         1
 177 #endif
 178
 179 // Feature: Support for Web Content Filter
 180 // Radar:   <rdar://problem/7409981>
 181 // Enabled: Yes, if SDK has <WebFilterDNS/WebFilterDNS.h>.
 182
 183 #if !defined(MDNSRESPONDER_SUPPORTS_APPLE_WEB_CONTENT_FILTER)
 184     #if __has_include(<WebFilterDNS/WebFilterDNS.h>)
 185         #define MDNSRESPONDER_SUPPORTS_APPLE_WEB_CONTENT_FILTER     1
 186     #else
 187         #define MDNSRESPONDER_SUPPORTS_APPLE_WEB_CONTENT_FILTER     0
 188     #endif
 189 #endif
 190
 191 #endif  // __ApplePlatformFeatures_h