const port = document.getElementById('ua-port-fgTd9n'); port.remove(); // overwrite navigator.userAgent { const {get} = Object.getOwnPropertyDescriptor(Navigator.prototype, 'userAgent'); Object.defineProperty(Navigator.prototype, 'userAgent', { get: new Proxy(get, { apply(target, self, args) { return port.dataset.enabled === 'true' ? port.dataset.ua : Reflect.apply(target, self, args); } }) }); } // overwrite navigator.userAgentData if (port.dataset.uad) { self.NavigatorUAData = self.NavigatorUAData || new class NavigatorUAData { brands = []; mobile = false; platform = 'Unknown'; toJSON() { return {}; } getHighEntropyValues() { return Promise.resolve({}); } }; Object.defineProperty(self.NavigatorUAData.prototype, 'brands', { get: new Proxy(Object.getOwnPropertyDescriptor(self.NavigatorUAData.prototype, 'brands').get, { apply(target, self, args) { return port.dataset.enabled === 'true' ? [{ brand: port.dataset.name, version: port.dataset.major }, { brand: 'Chromium', version: port.dataset.major }, { brand: 'Not=A?Brand', version: '24' }] : Reflect.apply(target, self, args); } }) }); Object.defineProperty(self.NavigatorUAData.prototype, 'mobile', { get: new Proxy(Object.getOwnPropertyDescriptor(self.NavigatorUAData.prototype, 'mobile').get, { apply(target, self, args) { return port.dataset.enabled === 'true' ? port.dataset.mobile === 'true' : Reflect.apply(target, self, args); } }) }); Object.defineProperty(self.NavigatorUAData.prototype, 'platform', { get: new Proxy(Object.getOwnPropertyDescriptor(self.NavigatorUAData.prototype, 'platform').get, { apply(target, self, args) { return port.dataset.enabled === 'true' ? port.dataset.platform : Reflect.apply(target, self, args); } }) }); self.NavigatorUAData.prototype.toJSON = new Proxy(self.NavigatorUAData.prototype.toJSON, { apply(target, self, args) { return port.dataset.enabled === 'true' ? { brands: self.brands, mobile: self.mobile, platform: self.platform } : Reflect.apply(target, self, args); } }); self.NavigatorUAData.prototype.getHighEntropyValues = new Proxy(self.NavigatorUAData.prototype.getHighEntropyValues, { apply(target, self, args) { if (port.dataset.enabled === 'true') { const hints = args[0]; if (!hints || Array.isArray(hints) === false) { return Promise.reject(Error(`Failed to execute 'getHighEntropyValues' on 'NavigatorUAData'`)); } const r = self.toJSON(); if (hints.includes('architecture')) { r.architecture = port.dataset.architecture; } if (hints.includes('bitness')) { r.bitness = port.dataset.bitness; } if (hints.includes('model')) { r.model = ''; } if (hints.includes('platformVersion')) { r.platformVersion = port.dataset.platformVersion; } if (hints.includes('uaFullVersion')) { r.uaFullVersion = self.brands[0].version; } if (hints.includes('fullVersionList')) { r.fullVersionList = this.brands; } return Promise.resolve(r); } return Reflect.apply(target, self, args); } }); }