Add xcprivacy privacy manifest to iOS framework #48951

jmagman · 2023-12-12T23:17:55Z

Create a PrivacyInfo.xcprivacy (this name is required) plist and move it to the top-level of the iOS framework bundle. NSPrivacyTracking* and NSPrivacyCollectedDataTypes keys are required, but the values are blank.

Apple now requires that third-party frameworks must include this manifest to document usage of particular APIs and how they are used.

Starting in fall 2023, when you upload a new app or app update to App Store Connect that uses an API (including from third-party SDKs) that requires a reason, you’ll receive a notice if you haven’t provided an approved reason in your app’s privacy manifest. And starting in spring 2024, in order to upload your new app or app update to App Store Connect, you’ll be required to include an approved reason in the app’s privacy manifest which accurately reflects how your app uses the API.

https://developer.apple.com/news/?id=z6fu1dcu

@stuartmorgan audited the engine and third_party:

File timestamps:

C617.1 for app state restoration in FlutterAppDelegate.mm.

0A2A.1 for implementation of the relevant File wrappers.

System boot time:

35F9.1 for various event timing and elapsed time calculations.

Note macOS frameworks do not need to declare NSPrivacyAccessedAPITypes.
I don't think this will require recipe or conductor codesign changes since this is a file copied as a resource into the framework, just as the modulemap and Info.plist aren't referenced anywhere.

I'm not quite sure how to test this other than letting it build and generate a Generate Privacy Report in a Flutter app in Xcode. There's no where we check that, say, the Info.plist is copied to the right place in Flutter.framework (even in flutter/flutter). When this rolls into the framework I will add a check to ios_content_validation_test.dart

On this PR the PrivacyInfo.xcprivacy was written to the expected location in the Flutter.framework:
https://cas-viewer.appspot.com/projects/chromium-swarm/instances/default_instance/blobs/d45cd0809420f08145c7b78ea96cba6e7ea48d8ecfdc8fd2411f82fa65444714/516/tree

Fixes flutter/flutter#131494

Pre-launch Checklist

I read the Contributor Guide and followed the process outlined there for submitting PRs.
I read the Tree Hygiene wiki page, which explains my responsibilities.
I read and followed the Flutter Style Guide and the C++, Objective-C, Java style guides.
I listed at least one issue that this PR fixes in the description above.
I added new tests to check the change I am making or feature I am adding, or the PR is test-exempt. See testing the engine for instructions on writing and running engine tests.
I updated/added relevant documentation (doc comments with ///).
I signed the CLA.
All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel on Discord.

flutter-dashboard · 2023-12-12T23:17:59Z

It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact "@text-exemption-reviewers" in the #hackers channel in Chat (don't just cc them here, they won't see it! Use Discord!).

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing.

jmagman · 2023-12-12T23:18:34Z

shell/platform/darwin/ios/framework/PrivacyInfo.xcprivacy

+			<string>NSPrivacyAccessedAPICategoryFileTimestamp</string>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>0A2A.1</string>


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.

jmagman · 2023-12-12T23:18:47Z

shell/platform/darwin/ios/framework/PrivacyInfo.xcprivacy

+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>0A2A.1</string>
+				<string>C617.1</string>


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];

jmagman · 2023-12-12T23:19:04Z

shell/platform/darwin/ios/framework/PrivacyInfo.xcprivacy

+			<string>NSPrivacyAccessedAPICategorySystemBootTime</string>
+			<key>NSPrivacyAccessedAPITypeReasons</key>
+			<array>
+				<string>35F9.1</string>


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.

jmagman · 2023-12-13T01:26:35Z

The PrivacyInfo.xcprivacy was written to the expected location in the framework:
https://cas-viewer.appspot.com/projects/chromium-swarm/instances/default_instance/blobs/d45cd0809420f08145c7b78ea96cba6e7ea48d8ecfdc8fd2411f82fa65444714/516/tree

jmagman · 2023-12-13T01:30:54Z

shell/platform/darwin/ios/framework/PrivacyInfo.xcprivacy

+	<key>NSPrivacyTracking</key>
+	<false/>
+	<key>NSPrivacyTrackingDomains</key>
+	<array/>
+	<key>NSPrivacyCollectedDataTypes</key>
+	<array>
+		<dict/>
+	</array>


False and empty, we are not tracking or collecting.

Hixie · 2023-12-13T01:40:18Z

might be worth putting the comments explaining these (that you wrote on this PR) literally as XML comments in the file itself.

Hixie · 2023-12-13T01:41:02Z

test-exempt: apple does not provide a way to meaningfully test this

matanlurey · 2023-12-13T01:42:11Z

shell/platform/darwin/ios/framework/PrivacyInfo.xcprivacy

I only wonder if someone of these review comments are better suited as , particularly ones with confusing semantics (i.e. that an array of an empty dict means "we are not tracking or collecting").

jmagman · 2023-12-13T01:43:27Z

literally as XML comments in the file itself

I would do this if we controlled how this file is used, but I'm not confident Apple's privacy tooling won't 💩 on an unexpected comment (or key, or value, or...). Hopefully this PR is documentation enough for the git archeologists.

I will include a better comment when I write the framework test that validates the file is where we expect it to be.

stuartmorgan

LGTM

stuartmorgan · 2023-12-13T17:20:28Z

shell/platform/darwin/ios/BUILD.gn

@@ -373,6 +373,12 @@ copy("copy_framework_module_map") {
  outputs = [ "$_flutter_framework_dir/Modules/module.modulemap" ]
 }

+copy("copy_framework_privacy_manifest") {


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 🤷🏻

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.

…gine#48951)

…140130) flutter/engine@9f7004e...923f9e2 2023-12-14 98614782+auto-submit[bot]@users.noreply.github.com Reverts "[Windows] Move to `FlutterCompositor` for rendering" (flutter/engine#49015) 2023-12-14 magder@google.com Add xcprivacy privacy manifest to iOS framework (flutter/engine#48951) 2023-12-14 30870216+gaaclarke@users.noreply.github.com [Impeller] Made the new blur support 1D blurs (flutter/engine#49001) 2023-12-14 skia-flutter-autoroll@skia.org Roll Skia from 69c02c9d56b2 to 188515347032 (1 revision) (flutter/engine#49005) 2023-12-14 bdero@google.com [Impeller] Add golden for clipped+transformed blur. (flutter/engine#48886) 2023-12-14 bdero@google.com [Flutter GPU] Runtime shader import. (flutter/engine#48875) 2023-12-13 737941+loic-sharma@users.noreply.github.com [Windows] Move to `FlutterCompositor` for rendering (flutter/engine#48849) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-engine-flutter-autoroll Please CC jsimmons@google.com,rmistry@google.com,zra@google.com on the revert to ensure that a human is aware of the problem. To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

In #48951 `NSPrivacyCollectedDataTypes` is an array with an empty dictionary, but the privacy report wants an empty array or it errors: <img width="523" alt="Screenshot 2023-12-14 at 10 02 52â�¯AM" src="https://github.com/flutter/flutter/assets/682784/a128b384-db2f-49d7-8b71-7965f2826de8"> When this is fixed the privacy report is blank, but that seems to be an Xcode bug? Will investigate. [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style

@stuartmorgan

Create a `PrivacyInfo.xcprivacy` (this name is required) plist and move it to the top-level of the iOS framework bundle. `NSPrivacyTracking*` and `NSPrivacyCollectedDataTypes` keys are required, but the values are blank. Apple [now requires](https://developer.apple.com/documentation/bundleresources/privacy_manifest_files) that third-party frameworks must include this manifest to document usage of particular APIs and [how they are used](https://developer.apple.com/documentation/bundleresources/privacy_manifest_files/describing_use_of_required_reason_api). > Starting in fall 2023, when you upload a new app or app update to App Store Connect that uses an API (including from third-party SDKs) that requires a reason, youâ��ll receive a notice if you havenâ��t provided an approved reason in your appâ��s privacy manifest. And starting in spring 2024, in order to upload your new app or app update to App Store Connect, youâ��ll be required to include an approved reason in the appâ��s privacy manifest which accurately reflects how your app uses the API. https://developer.apple.com/news/?id=z6fu1dcu @stuartmorgan [audited](flutter/flutter#131494 (comment)) the engine and third_party: > * File timestamps: > > * `C617.1` for app state restoration in `FlutterAppDelegate.mm`. > * `0A2A.1` for implementation of the relevant `File` wrappers. > * System boot time: > > * `35F9.1` for various event timing and elapsed time calculations. Note macOS frameworks do not need to declare `NSPrivacyAccessedAPITypes`. I don't think this will require recipe or conductor codesign changes since this is a file copied as a resource into the framework, just as the modulemap and Info.plist aren't referenced anywhere. I'm not quite sure how to test this other than letting it build and generate a `Generate Privacy Report` in a Flutter app in Xcode. There's no where we check that, say, the Info.plist is copied to the right place in Flutter.framework (even in flutter/flutter). When this rolls into the framework I will add a check to [ios_content_validation_test.dart](https://github.com/flutter/flutter/blob/3da9bc169837d223496439b6d5f6b7e1a82d4318/dev/devicelab/bin/tasks/ios_content_validation_test.dart) On this PR the `PrivacyInfo.xcprivacy` was written to the expected location in the Flutter.framework: https://cas-viewer.appspot.com/projects/chromium-swarm/instances/default_instance/blobs/d45cd0809420f08145c7b78ea96cba6e7ea48d8ecfdc8fd2411f82fa65444714/516/tree Fixes flutter/flutter#131494 [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style

@stuartmorgan

Create a `PrivacyInfo.xcprivacy` (this name is required) plist and move it to the top-level of the iOS framework bundle. `NSPrivacyTracking*` and `NSPrivacyCollectedDataTypes` keys are required, but the values are blank. Apple [now requires](https://developer.apple.com/documentation/bundleresources/privacy_manifest_files) that third-party frameworks must include this manifest to document usage of particular APIs and [how they are used](https://developer.apple.com/documentation/bundleresources/privacy_manifest_files/describing_use_of_required_reason_api). > Starting in fall 2023, when you upload a new app or app update to App Store Connect that uses an API (including from third-party SDKs) that requires a reason, youâ��ll receive a notice if you havenâ��t provided an approved reason in your appâ��s privacy manifest. And starting in spring 2024, in order to upload your new app or app update to App Store Connect, youâ��ll be required to include an approved reason in the appâ��s privacy manifest which accurately reflects how your app uses the API. https://developer.apple.com/news/?id=z6fu1dcu @stuartmorgan [audited](flutter/flutter#131494 (comment)) the engine and third_party: > * File timestamps: > > * `C617.1` for app state restoration in `FlutterAppDelegate.mm`. > * `0A2A.1` for implementation of the relevant `File` wrappers. > * System boot time: > > * `35F9.1` for various event timing and elapsed time calculations. Note macOS frameworks do not need to declare `NSPrivacyAccessedAPITypes`. I don't think this will require recipe or conductor codesign changes since this is a file copied as a resource into the framework, just as the modulemap and Info.plist aren't referenced anywhere. I'm not quite sure how to test this other than letting it build and generate a `Generate Privacy Report` in a Flutter app in Xcode. There's no where we check that, say, the Info.plist is copied to the right place in Flutter.framework (even in flutter/flutter). When this rolls into the framework I will add a check to [ios_content_validation_test.dart](https://github.com/flutter/flutter/blob/3da9bc169837d223496439b6d5f6b7e1a82d4318/dev/devicelab/bin/tasks/ios_content_validation_test.dart) On this PR the `PrivacyInfo.xcprivacy` was written to the expected location in the Flutter.framework: https://cas-viewer.appspot.com/projects/chromium-swarm/instances/default_instance/blobs/d45cd0809420f08145c7b78ea96cba6e7ea48d8ecfdc8fd2411f82fa65444714/516/tree Fixes flutter/flutter#131494 [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style (cherry picked from commit cf7c260)

…49041) In flutter#48951 `NSPrivacyCollectedDataTypes` is an array with an empty dictionary, but the privacy report wants an empty array or it errors: <img width="523" alt="Screenshot 2023-12-14 at 10 02 52â�¯AM" src="https://github.com/flutter/flutter/assets/682784/a128b384-db2f-49d7-8b71-7965f2826de8"> When this is fixed the privacy report is blank, but that seems to be an Xcode bug? Will investigate. [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style (cherry picked from commit 0ca2f38)

…49041) In flutter#48951 `NSPrivacyCollectedDataTypes` is an array with an empty dictionary, but the privacy report wants an empty array or it errors: <img width="523" alt="Screenshot 2023-12-14 at 10 02 52â�¯AM" src="https://github.com/flutter/flutter/assets/682784/a128b384-db2f-49d7-8b71-7965f2826de8"> When this is fixed the privacy report is blank, but that seems to be an Xcode bug? Will investigate. [C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style

jmagman added the platform-ios label Dec 12, 2023

jmagman self-assigned this Dec 12, 2023

jmagman commented Dec 12, 2023

View reviewed changes

Add xcprivacy privacy manifest to iOS framework

d41d6a0

jmagman force-pushed the ios-privacy-manifest branch from 1c7f7e8 to d41d6a0 Compare December 13, 2023 01:26

jmagman commented Dec 13, 2023

View reviewed changes

jmagman requested review from stuartmorgan and dnfield December 13, 2023 01:37

matanlurey reviewed Dec 13, 2023

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jmagman added the autosubmit Merge PR when tree becomes green via auto submit App label Dec 14, 2023

auto-submit bot merged commit cf7c260 into flutter:main Dec 14, 2023
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jmagman deleted the ios-privacy-manifest branch December 14, 2023 01:42

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Roll Flutter Engine from 9f7004e3e30e to cf7c26091403 (6 revisions) flutter/flutter#140124

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Roll Flutter Engine from 9f7004e3e30e to 923f9e29d4b5 (7 revisions) flutter/flutter#140130

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This was referenced Dec 14, 2023

Find Required Reason API usage in Flutter Engine and create Privacy Manifest flutter/flutter#131494

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Fix NSPrivacyCollectedDataTypes array in privacy manifest #49041

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[Request]: Specify declared API reasons for iOS fluttercommunity/plus_plugins#2469

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Specify declared API reasons for iOS pichillilorenzo/flutter_inappwebview#1929

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jmagman mentioned this pull request Feb 13, 2024

Add empty privacy manifest to FlutterMacOS flutter/flutter#143381

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Add xcprivacy privacy manifest to iOS framework #48951

Add xcprivacy privacy manifest to iOS framework #48951

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

Add xcprivacy privacy manifest to iOS framework #48951

Add xcprivacy privacy manifest to iOS framework #48951

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