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Add xcprivacy privacy manifest to iOS framework #48951

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Dec 14, 2023
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Add xcprivacy privacy manifest to iOS framework #48951

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d41d6a0
Add xcprivacy privacy manifest to iOS framework
jmagman Dec 12, 2023
cb8426c
Add comment to gn
jmagman Dec 13, 2023
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1 change: 1 addition & 0 deletions ci/licenses_golden/licenses_flutter
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Original file line number Diff line number Diff line change
Expand Up @@ -9330,6 +9330,7 @@ FILE: ../../../flutter/shell/platform/darwin/ios/framework/Headers/FlutterPlugin
FILE: ../../../flutter/shell/platform/darwin/ios/framework/Headers/FlutterPluginAppLifeCycleDelegate.h
FILE: ../../../flutter/shell/platform/darwin/ios/framework/Headers/FlutterViewController.h
FILE: ../../../flutter/shell/platform/darwin/ios/framework/Info.plist
FILE: ../../../flutter/shell/platform/darwin/ios/framework/PrivacyInfo.xcprivacy
FILE: ../../../flutter/shell/platform/darwin/ios/framework/Source/FlutterAppDelegate.mm
FILE: ../../../flutter/shell/platform/darwin/ios/framework/Source/FlutterAppDelegateTest.mm
FILE: ../../../flutter/shell/platform/darwin/ios/framework/Source/FlutterAppDelegate_Test.h
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11 changes: 11 additions & 0 deletions shell/platform/darwin/ios/BUILD.gn
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Expand Up @@ -373,6 +373,15 @@ copy("copy_framework_module_map") {
outputs = [ "$_flutter_framework_dir/Modules/module.modulemap" ]
}

# Copy privacy manifest. This file is required by Apple for third-party SDKs,
# and documents engine and third_party usage of timestamps and boot time APIs.
# See https://developer.apple.com/documentation/bundleresources/privacy_manifest_files
copy("copy_framework_privacy_manifest") {
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Maybe a comment linking to https://developer.apple.com/documentation/bundleresources/privacy_manifest_files here to provide context on what this is and why we are doing it?

Although developer.apple.com links are notoriously fragile, so 🤷🏻

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We don't explain Info.plists, or modulemaps, or the values within those files, or any other thing we move around in this gn file. In 2 years when you Google "PrivacyInfo.xcprivacy" you'll see the most relevant info, and when you git blame you'll find this PR with my thorough description. However adding the link is harmless so I'll do that.

visibility = [ ":*" ]
sources = [ "framework/PrivacyInfo.xcprivacy" ]
outputs = [ "$_flutter_framework_dir/PrivacyInfo.xcprivacy" ]
}

action("copy_framework_headers") {
script = "//flutter/sky/tools/install_framework_headers.py"
visibility = [ ":*" ]
Expand Down Expand Up @@ -415,6 +424,7 @@ shared_library("copy_and_verify_framework_module") {
":copy_framework_headers",
":copy_framework_info_plist",
":copy_framework_module_map",
":copy_framework_privacy_manifest",
]

if (darwin_extension_safe) {
Expand All @@ -437,6 +447,7 @@ group("universal_flutter_framework") {
":copy_framework_icu",
":copy_framework_info_plist",
":copy_framework_module_map",
":copy_framework_privacy_manifest",
":copy_license",
]

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34 changes: 34 additions & 0 deletions shell/platform/darwin/ios/framework/PrivacyInfo.xcprivacy
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I only wonder if someone of these review comments are better suited as <!-- comments -->, particularly ones with confusing semantics (i.e. that an array of an empty dict means "we are not tracking or collecting").

Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>NSPrivacyTracking</key>
<false/>
<key>NSPrivacyTrackingDomains</key>
<array/>
<key>NSPrivacyCollectedDataTypes</key>
<array>
<dict/>
</array>
Comment on lines +5 to +12
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False and empty, we are not tracking or collecting.

<key>NSPrivacyAccessedAPITypes</key>
<array>
<dict>
<key>NSPrivacyAccessedAPIType</key>
<string>NSPrivacyAccessedAPICategoryFileTimestamp</string>
<key>NSPrivacyAccessedAPITypeReasons</key>
<array>
<string>0A2A.1</string>
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Declare this reason if your third-party SDK is providing a wrapper function around file timestamp API(s) for the app to use, and you only access the file timestamp APIs when the app calls your wrapper function. This reason may only be declared by third-party SDKs. This reason may not be declared if your third-party SDK was created primarily to wrap required reason API(s). Information accessed for this reason, or any derived information, may not be used for your third-party SDK’s own purposes or sent off-device by your third-party SDK.

<string>C617.1</string>
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@jmagman jmagman Dec 12, 2023 •
edited
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For app state restoration in FlutterAppDelegate.mm:

Declare this reason to access the timestamps, size, or other metadata of files inside the app container, app group container, or the app’s CloudKit container.

engine/shell/platform/darwin/ios/framework/Source/FlutterAppDelegate.mm

Lines 327 to 329 in a1777a3

[[[NSBundle mainBundle] executableURL] getResourceValue:&fileDate
forKey:NSURLContentModificationDateKey
error:&error];

</array>
</dict>
<dict>
<key>NSPrivacyAccessedAPIType</key>
<string>NSPrivacyAccessedAPICategorySystemBootTime</string>
<key>NSPrivacyAccessedAPITypeReasons</key>
<array>
<string>35F9.1</string>
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Declare this reason to access the system boot time in order to measure the amount of time that has elapsed between events that occurred within the app or to perform calculations to enable timers. Information accessed for this reason, or any derived information, may not be sent off-device. There is an exception for information about the amount of time that has elapsed between events that occurred within the app, which may be sent off-device.

</array>
</dict>
</array>
</dict>
</plist>