add fingerprinting configuration

2025-10-11 14:52:09 +02:00
parent 723f22e04c
commit 36a67ee09a
24 changed files with 642 additions and 10 deletions
@@ -0,0 +1,174 @@
+import 'package:exceptions/exceptions.dart';
+import 'package:fast_equatable/fast_equatable.dart';
+
+class FingerprintOverrides with FastEquatable {
+  static final pattern = RegExp('([+-])([a-zA-Z_][a-zA-Z0-9_]{1,64})');
+
+  final bool? allTargets;
+  final Map<String, bool> targets;
+
+  FingerprintOverrides(this.allTargets, this.targets);
+
+  //Monitor https://searchfox.org/firefox-main/source/toolkit/components/resistfingerprinting/RFPTargetsDefault.inc
+  FingerprintOverrides.defaults()
+    : this(false, {
+        'CanvasRandomization': true,
+        'EfficientCanvasRandomization': true,
+        'FontVisibilityLangPack': true,
+        'JSMathFdlibm': true,
+        'ScreenAvailToResolution': true,
+        'NavigatorHWConcurrencyTiered': true,
+        'MaxTouchPointsCollapse': true,
+      });
+
+  FingerprintOverrides.hardenedDefaults()
+    : this(false, {
+        'TouchEvents': true,
+        'PointerEvents': true,
+        'KeyboardEvents': true,
+        'ScreenOrientation': true,
+        'SpeechSynthesis': true,
+        'CSSPrefersReducedMotion': true,
+        'CSSPrefersContrast': true,
+        'CanvasRandomization': true,
+        'CanvasExtractionFromThirdPartiesIsBlocked': true,
+        'JSLocale': true,
+        'NavigatorAppVersion': true,
+        'NavigatorBuildID': true,
+        'NavigatorHWConcurrency': true,
+        'NavigatorOscpu': true,
+        'NavigatorPlatform': true,
+        'NavigatorUserAgent': true,
+        'PointerId': true,
+        'StreamVideoFacingMode': true,
+        'JSDateTimeUTC': true,
+        'JSMathFdlibm': true,
+        'Gamepad': true,
+        'HttpUserAgent': true,
+        'WindowOuterSize': true,
+        'WindowScreenXY': true,
+        'WindowInnerScreenXY': true,
+        'ScreenPixelDepth': true,
+        'ScreenRect': true,
+        'ScreenAvailRect': true,
+        'VideoElementMozFrames': true,
+        'VideoElementMozFrameDelay': true,
+        'VideoElementPlaybackQuality': true,
+        'ReduceTimerPrecision': true,
+        'WidgetEvents': true,
+        'MediaDevices': true,
+        'MediaCapabilities': true,
+        'AudioSampleRate': true,
+        'NetworkConnection': true,
+        'WindowDevicePixelRatio': true,
+        'MouseEventScreenPoint': true,
+        'FontVisibilityBaseSystem': true,
+        'FontVisibilityLangPack': true,
+        'DeviceSensors': true,
+        'RoundWindowSize': true,
+        'UseStandinsForNativeColors': true,
+        'AudioContext': true,
+        'MediaError': true,
+        'DOMStyleOsxFontSmoothing': true,
+        'CSSDeviceSize': true,
+        'CSSColorInfo': true,
+        'CSSResolution': true,
+        'CSSPrefersReducedTransparency': true,
+        'CSSInvertedColors': true,
+        'CSSVideoDynamicRange': true,
+        'CSSPointerCapabilities': true,
+        'WebGLRenderCapability': true,
+        'WebGLRenderInfo': true,
+        'SiteSpecificZoom': true,
+        'FontVisibilityRestrictGenerics': true,
+        'WebVTT': true,
+        'WebGPULimits': true,
+        'WebGPUIsFallbackAdapter': true,
+        'WebGPUSubgroupSizes': true,
+        'JSLocalePrompt': true,
+        'ScreenAvailToResolution': true,
+        'UseHardcodedFontSubstitutes': true,
+        'DiskStorageLimit': true,
+        'WebCodecs': true,
+        'MaxTouchPoints': true,
+        'MaxTouchPointsCollapse': true,
+        'NavigatorHWConcurrencyTiered': true,
+      });
+
+  static Result<FingerprintOverrides> parse(
+    String input,
+    Set<String> availableTargets,
+  ) {
+    final cleaned = input.replaceAll(RegExp(r'\s'), '');
+    if (cleaned.isEmpty) return Result.success(FingerprintOverrides(null, {}));
+
+    bool? allTargets;
+    final targets = <String, bool>{};
+
+    for (final word in cleaned.split(',')) {
+      final match = pattern.firstMatch(word);
+      if (match == null) {
+        return Result.failure(
+          const ErrorMessage(source: 'FpParser', message: 'Invalid Override'),
+        );
+      }
+
+      final enabled = match.group(1) != '-';
+      final name = match.group(2)!;
+
+      if (name == 'AllTargets') {
+        allTargets = enabled;
+        continue;
+      }
+
+      if (!availableTargets.contains(name)) {
+        return Result.failure(
+          const ErrorMessage(
+            source: 'FpParser',
+            message: 'Invalid target name',
+          ),
+        );
+      }
+
+      targets[name] = enabled;
+    }
+
+    return Result.success(FingerprintOverrides(allTargets, targets));
+  }
+
+  @override
+  String toString() {
+    final sb = StringBuffer();
+
+    if (allTargets != null) {
+      sb.write('${allTargets! ? '+' : '-'}AllTargets');
+      if (targets.isNotEmpty) {
+        sb.write(',');
+      }
+    }
+
+    sb.write(
+      targets.entries.map((e) => (e.value ? '+' : '-') + e.key).join(','),
+    );
+
+    return sb.toString();
+  }
+
+  FingerprintOverrides copyWithAllTargetsEnabled(bool value) {
+    return FingerprintOverrides(
+      value,
+      Map.fromEntries(targets.entries.where((e) => e.value != value)),
+    );
+  }
+
+  FingerprintOverrides copyWithTarget(String name, bool value) {
+    if (value && allTargets == true) {
+      return this;
+    }
+
+    return FingerprintOverrides(allTargets, {...targets, name: value});
+  }
+
+  @override
+  List<Object?> get hashParameters => [allTargets, targets];
+}