replay: add sensitive content widget to default masking

CHANGELOG.md

@@ -150,6 +150,7 @@
 
 ### Features
 
+- Add [SensitiveContent](https://main-api.flutter.dev/flutter/widgets/SensitiveContent-class.html) widget to default masking ([#2989](https://github.com/getsentry/sentry-dart/pull/2989))
 - Tag all spans with thread info ([#3101](https://github.com/getsentry/sentry-dart/pull/3101))
 
 ### Enhancements

packages/flutter/lib/src/sentry_privacy_options.dart

@@ -5,6 +5,9 @@ import 'package:meta/meta.dart';
 import '../sentry_flutter.dart';
 import 'screenshot/masking_config.dart';
 import 'screenshot/widget_filter.dart';
+// ignore: implementation_imports
+import 'package:sentry/src/event_processor/enricher/flutter_runtime.dart'
+    as flutter_runtime;
 
 /// Configuration of the experimental privacy feature.
 class SentryPrivacyOptions {
@@ -75,6 +78,11 @@ class SentryPrivacyOptions {
       ));
     }
 
+    const flutterVersion = flutter_runtime.FlutterVersion.version;
+    if (flutterVersion != null) {
+      _maybeAddSensitiveContentRule(rules, flutterVersion);
+    }
+
     // In Debug mode, check if users explicitly mask (or unmask) widgets that
     // look like they should be masked, e.g. Videos, WebViews, etc.
     if (runtimeChecker.isDebugMode()) {
@@ -162,6 +170,56 @@ class SentryPrivacyOptions {
   }
 }
 
+/// Returns `true` if a SensitiveContent masking rule _should_ be added for a
+/// given [flutterVersion] string. The SensitiveContent widget was introduced
+/// in Flutter 3.33, therefore we only add the masking rule when the detected
+/// version is >= 3.33.
+bool _shouldAddSensitiveContentRule(String version) {
+  final dot = version.indexOf('.');
+  if (dot == -1) return false;
+
+  final major = int.tryParse(version.substring(0, dot));
+  final nextDot = version.indexOf('.', dot + 1);
+  final minor = int.tryParse(
+      version.substring(dot + 1, nextDot == -1 ? version.length : nextDot));
+
+  return major != null &&
+      minor != null &&
+      (major > 3 || (major == 3 && minor >= 33));
+}
+
+/// Adds a masking rule for the [SensitiveContent] widget.
+///
+/// The rule masks any widget that exposes a `sensitivity` property which is an
+/// [Enum]. This is how the [SensitiveContent] widget can be detected
+/// without depending on its type directly (which would fail to compile on
+/// older Flutter versions).
+void _maybeAddSensitiveContentRule(
+    List<SentryMaskingRule> rules, String flutterVersion) {
+  if (!_shouldAddSensitiveContentRule(flutterVersion)) {
+    return;
+  }
+
+  SentryMaskingDecision maskSensitiveContent(Element element, Widget widget) {
+    try {
+      final dynamic dynWidget = widget;
+      final sensitivity = dynWidget.sensitivity;
+      // If the property exists, we assume this is the SensitiveContent widget.
+      assert(sensitivity is Enum);
+      return SentryMaskingDecision.mask;
+    } catch (_) {
+      // Property not found – continue processing other rules.
+      return SentryMaskingDecision.continueProcessing;
+    }
+  }
+
+  rules.add(SentryMaskingCustomRule<Widget>(
+    callback: maskSensitiveContent,
+    name: 'SensitiveContent',
+    description: 'Mask SensitiveContent widget.',
+  ));
+}
+
 SentryMaskingDecision _maskImagesExceptAssets(Element element, Image widget) {
   final image = widget.image;
   if (image is AssetBundleImageProvider) {

packages/flutter/test/screenshot/masking_config_test.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/services.dart';
 import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
@@ -125,7 +126,7 @@ void main() async {
           SentryMaskingDecision.unmask);
     });
 
-    testWidgets('retuns false if no rule matches', (tester) async {
+    testWidgets('returns false if no rule matches', (tester) async {
       final sut = SentryMaskingConfig([
         SentryMaskingCustomRule<Image>(
           callback: (e, w) => SentryMaskingDecision.continueProcessing,
@@ -169,6 +170,7 @@ void main() async {
         'SentryMaskingConstantRule<Text>(mask)',
         'SentryMaskingConstantRule<EditableText>(mask)',
         'SentryMaskingConstantRule<RichText>(mask)',
+        ..._maybeWithSensitiveContent(),
         'SentryMaskingCustomRule<Widget>(Debug-mode-only warning for potentially sensitive widgets.)'
       ]);
     });
@@ -181,6 +183,7 @@ void main() async {
       expect(rulesAsStrings(sut), [
         ...alwaysEnabledRules,
         'SentryMaskingConstantRule<Image>(mask)',
+        ..._maybeWithSensitiveContent(),
         'SentryMaskingCustomRule<Widget>(Debug-mode-only warning for potentially sensitive widgets.)'
       ]);
     });
@@ -193,6 +196,7 @@ void main() async {
       expect(rulesAsStrings(sut), [
         ...alwaysEnabledRules,
         'SentryMaskingCustomRule<Image>(Mask all images except asset images.)',
+        ..._maybeWithSensitiveContent(),
         'SentryMaskingCustomRule<Widget>(Debug-mode-only warning for potentially sensitive widgets.)'
       ]);
     });
@@ -207,6 +211,7 @@ void main() async {
         'SentryMaskingConstantRule<Text>(mask)',
         'SentryMaskingConstantRule<EditableText>(mask)',
         'SentryMaskingConstantRule<RichText>(mask)',
+        ..._maybeWithSensitiveContent(),
         'SentryMaskingCustomRule<Widget>(Debug-mode-only warning for potentially sensitive widgets.)'
       ]);
     });
@@ -218,31 +223,66 @@ void main() async {
         ..maskAssetImages = false;
       expect(rulesAsStrings(sut), [
         ...alwaysEnabledRules,
+        ..._maybeWithSensitiveContent(),
         'SentryMaskingCustomRule<Widget>(Debug-mode-only warning for potentially sensitive widgets.)'
       ]);
     });
 
+    test(
+        'SensitiveContent rule is automatically added when current Flutter version is equal or newer than 3.33',
+        () {
+      final sut = SentryPrivacyOptions();
+      final version = FlutterVersion.version!;
+      final dot = version.indexOf('.');
+      final major = int.tryParse(version.substring(0, dot));
+      final nextDot = version.indexOf('.', dot + 1);
+      final minor = int.tryParse(
+          version.substring(dot + 1, nextDot == -1 ? version.length : nextDot));
+
+      if (major! > 3 || (major == 3 && minor! >= 33)) {
+        expect(
+            rulesAsStrings(sut).contains(
+                'SentryMaskingCustomRule<SensitiveContent>(Mask SensitiveContent widget.)'),
+            isTrue,
+            reason: 'Test failed with version: ${FlutterVersion.version}');
+      } else {
+        expect(
+            rulesAsStrings(sut).contains(
+                'SentryMaskingCustomRule<SensitiveContent>(Mask SensitiveContent widget.)'),
+            isFalse,
+            reason: 'Test failed with version: ${FlutterVersion.version}');
+      }
+    }, skip: FlutterVersion.version == null);
+
     group('user rules', () {
       final defaultRules = [
         ...alwaysEnabledRules,
         'SentryMaskingCustomRule<Image>(Mask all images except asset images.)',
         'SentryMaskingConstantRule<Text>(mask)',
         'SentryMaskingConstantRule<EditableText>(mask)',
         'SentryMaskingConstantRule<RichText>(mask)',
+        ..._maybeWithSensitiveContent(),
         'SentryMaskingCustomRule<Widget>(Debug-mode-only warning for potentially sensitive widgets.)'
       ];
+
       test('mask() takes precedence', () {
         final sut = SentryPrivacyOptions();
         sut.mask<Image>();
-        expect(rulesAsStrings(sut),
-            ['SentryMaskingConstantRule<Image>(mask)', ...defaultRules]);
+        expect(rulesAsStrings(sut), [
+          'SentryMaskingConstantRule<Image>(mask)',
+          ...defaultRules,
+        ]);
       });
+
       test('unmask() takes precedence', () {
         final sut = SentryPrivacyOptions();
         sut.unmask<Image>();
-        expect(rulesAsStrings(sut),
-            ['SentryMaskingConstantRule<Image>(unmask)', ...defaultRules]);
+        expect(rulesAsStrings(sut), [
+          'SentryMaskingConstantRule<Image>(unmask)',
+          ...defaultRules,
+        ]);
       });
+
       test('are ordered in the call order', () {
         var sut = SentryPrivacyOptions();
         sut.mask<Image>();
@@ -272,13 +312,14 @@ void main() async {
           ...defaultRules
         ]);
       });
+
       test('maskCallback() takes precedence', () {
         final sut = SentryPrivacyOptions();
         sut.maskCallback(
             (Element element, Image widget) => SentryMaskingDecision.mask);
         expect(rulesAsStrings(sut), [
           'SentryMaskingCustomRule<Image>(Custom callback-based rule (description unspecified))',
-          ...defaultRules
+          ...defaultRules,
         ]);
       });
       test('User cannot add $SentryMask and $SentryUnmask rules', () {
@@ -320,6 +361,25 @@ void main() async {
   });
 }
 
+List<String> _maybeWithSensitiveContent() {
+  final version = FlutterVersion.version;
+  if (version == null) {
+    return [];
+  }
+  final dot = version.indexOf('.');
+  final major = int.tryParse(version.substring(0, dot));
+  final nextDot = version.indexOf('.', dot + 1);
+  final minor = int.tryParse(
+      version.substring(dot + 1, nextDot == -1 ? version.length : nextDot));
+  if (major! > 3 || (major == 3 && minor! >= 33)) {
+    return [
+      'SentryMaskingCustomRule<SensitiveContent>(Mask SensitiveContent widget.)'
+    ];
+  } else {
+    return [];
+  }
+}
+
 extension on Element {
   Element findFirstOfType<T>() {
     late Element result;