1 files changed, 102 insertions, 0 deletions

diff --git a/packages/service-inject/src/shims/userAgentData.ts b/packages/service-inject/src/shims/userAgentData.ts
new file mode 100644
index 0000000..be43823
--- /dev/null
+++ b/packages/service-inject/src/shims/userAgentData.ts
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C)  2021-2022 Kristóf Marussy <kristof@marussy.com>
+ *
+ * This file is part of Sophie.
+ *
+ * Sophie is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import {
+  defineProtoProperty,
+  deleteProtoProperty,
+  simulateNativeClass,
+  simulateNativeFunction,
+} from '../utils';
+
+export function shimUserAgentData(): void {
+  const brands = [
+    {
+      brand: ' Not A; Brand',
+      version: '99',
+    },
+    {
+      brand: 'Chromium',
+      version: '96',
+    }
+  ];
+  const mobile = false;
+  const platform = 'Linux';
+
+  const simulatedNavigatorUa = simulateNativeClass('NavigatorUAData', function NavigatorUAData() {
+    // Nothing to initiailize.
+  }, {
+    brands: {
+      configurable: true,
+      enumerable: true,
+      get: simulateNativeFunction('brands', () => brands),
+    },
+    mobile: {
+      configurable: true,
+      enumerable: true,
+      get: simulateNativeFunction('mobile', () => mobile),
+    },
+    platform: {
+      configurable: true,
+      enumerable: true,
+      get: simulateNativeFunction('platform', () => platform),
+    },
+    getHighEntropyValues: {
+      configurable: true,
+      enumerable: false,
+      value: simulateNativeFunction('getHighEntropyValues', (...args: unknown[]) => {
+        if (args.length == 0) {
+          throw new TypeError("Failed to execute 'getHighEntropyValues' on 'NavigatorUAData': 1 argument required, but only 0 present.");
+        }
+        const hints = Array.from(args[0] as Iterable<string>);
+        if (hints.length === 0) {
+          return {};
+        }
+        const data: Record<string, unknown> = {
+          brands,
+          mobile,
+        }
+        if (hints.includes('platform')) {
+          data['platform'] = platform;
+        }
+        return Promise.resolve(data);
+      })
+    },
+    toJSON: {
+      configurable: true,
+      enumerable: false,
+      value: simulateNativeFunction('toJSON', () => ({
+        brands,
+        mobile,
+      })),
+      writable: false,
+    },
+  });
+
+  const simulatedUserAgentData = Reflect.construct(simulatedNavigatorUa, []);
+  defineProtoProperty(window.navigator, 'userAgentData', {
+    configurable: true,
+    enumerable: true,
+    get: simulateNativeFunction('userAgentData', () => simulatedUserAgentData),
+  });
+}
+
+export function deleteUserAgentData(): void {
+  deleteProtoProperty(window.navigator, 'userAgentData');
+}