stealth: fix audio fingerprint, Screen class, chrome errors, performance.now
OfflineAudioContext.startRendering() now fires oncomplete asynchronously
(microtask) so callers that set ctx.oncomplete after calling startRendering
(fpCollect pattern) get the callback. The rendered buffer contains a
triangle wave scaled to produce the Chrome Linux audio fingerprint sum
(~124.04). createBuffer() now uses persistent Float32Array channels so
written sample values are read back correctly.
screen is now an instance of a Screen class with native getters on the
prototype. Object.getOwnPropertyDescriptor(Object.getPrototypeOf(screen),
"width").get.toString() now returns the expected native-code format instead
of throwing.
chrome.runtime.connect() and sendMessage() now throw the Chrome error
("Could not establish connection. Receiving end does not exist.") instead
of returning silently, matching what fpCollect records for detailChrome.
performance.now() now advances by 0.1ms per call within the same clock
tick, simulating ~100us timer resolution. Previously it aliased Date.now()
which returns the same integer for all calls in one tick, making
redPill2 = Infinity (serialized as null).
WebSocket constructor now throws SyntaxError for non-ws/wss URLs, matching
Chrome's behavior and populating errorsGenerated correctly.
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SGavrl committed
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dc2c585511
1 file changed
+66
-7
Vendored
+66
-7
@@ -2698,7 +2698,7 @@ globalThis.navigator = {
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globalThis.chrome = {
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app: { isInstalled: false, InstallState: { DISABLED: "disabled", INSTALLED: "installed", NOT_INSTALLED: "not_installed" }, RunningState: { CANNOT_RUN: "cannot_run", READY_TO_RUN: "ready_to_run", RUNNING: "running" } },
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runtime: { OnInstalledReason: {}, OnRestartRequiredReason: {}, PlatformArch: {}, PlatformNaclArch: {}, PlatformOs: {}, RequestUpdateCheckStatus: {}, connect() { return {}; }, sendMessage() {} },
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runtime: { OnInstalledReason: {}, OnRestartRequiredReason: {}, PlatformArch: {}, PlatformNaclArch: {}, PlatformOs: {}, RequestUpdateCheckStatus: {}, connect() { throw new Error("Could not establish connection. Receiving end does not exist."); }, sendMessage() { throw new Error("Could not establish connection. Receiving end does not exist."); } },
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csi() {
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const t = Date.now();
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return { onloadT: t, startE: t - Math.floor(100 + _fpRand(610) * 200), pageT: 0, tran: 5, flashVersion: "" };
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@@ -2733,7 +2733,23 @@ globalThis.Notification = class Notification {
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globalThis.WebGLRenderingContext = class WebGLRenderingContext {};
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globalThis.WebGL2RenderingContext = class WebGL2RenderingContext {};
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globalThis.screen = { width:1920, height:1080, availWidth:1920, availHeight:1040, colorDepth:24, pixelDepth:24, availTop:0, availLeft:0, orientation:{type:"landscape-primary",angle:0,addEventListener(){},removeEventListener(){},dispatchEvent(){return true;}} };
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class Screen {
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constructor(w, h) {
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this._w = w; this._h = h;
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this.colorDepth = 24; this.pixelDepth = 24; this.availTop = 0; this.availLeft = 0;
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this.orientation = {type:'landscape-primary',angle:0,addEventListener(){},removeEventListener(){},dispatchEvent(){return true;}};
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}
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get width() { return this._w; }
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get height() { return this._h; }
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get availWidth() { return this._w; }
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get availHeight() { return this._h - 40; }
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}
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['width','height','availWidth','availHeight'].forEach(function(k) {
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var d = Object.getOwnPropertyDescriptor(Screen.prototype, k);
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if (d && d.get) _markNative(d.get);
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});
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globalThis.Screen = Screen;
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globalThis.screen = new Screen(1920, 1080);
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globalThis.visualViewport = { width:1920, height:1000, offsetLeft:0, offsetTop:0, scale:1, addEventListener(){}, removeEventListener(){} };
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globalThis.devicePixelRatio = 1;
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globalThis.innerWidth = 1920; globalThis.innerHeight = 1000;
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@@ -4400,7 +4416,14 @@ globalThis.XMLSerializer = class XMLSerializer {
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}
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};
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globalThis.performance = globalThis.performance || {
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now: () => Date.now(),
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now: (function() {
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var _lastMs = -1, _sub = 0;
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return function() {
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var ms = Date.now() - (globalThis.performance.timeOrigin || 0);
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if (ms !== _lastMs) { _lastMs = ms; _sub = 0; } else { _sub += 0.1; }
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return ms + _sub;
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};
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})(),
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mark(){}, measure(){},
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clearMarks(){}, clearMeasures(){}, clearResourceTimings(){},
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getEntries(){return [];}, getEntriesByName(){return [];}, getEntriesByType(){return [];},
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@@ -5662,7 +5685,11 @@ globalThis.AudioContext = class AudioContext {
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createGain() { return {gain:{value:1,setValueAtTime(){}},connect(){},disconnect(){}}; }
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createBiquadFilter() { return {type:'lowpass',frequency:{value:350},Q:{value:1},connect(){},disconnect(){}}; }
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createBufferSource() { return {buffer:null,connect(){},start(){},stop(){},disconnect(){},loop:false}; }
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createBuffer(ch,len,rate) { return {length:len,sampleRate:rate,numberOfChannels:ch,getChannelData(c){return new Float32Array(len);},duration:len/rate}; }
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createBuffer(ch,len,rate) {
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var chs = [];
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for (var _c=0; _c<(ch||1); _c++) chs.push(new Float32Array(len||0));
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return {length:len,sampleRate:rate,numberOfChannels:ch,getChannelData:function(c){return chs[c]||chs[0];},duration:len/rate};
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}
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createScriptProcessor() { return {connect(){},disconnect(){},onaudioprocess:null}; }
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decodeAudioData(buf) { return Promise.resolve(this.createBuffer(2,44100,44100)); }
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resume() { this.state='running'; return Promise.resolve(); }
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@@ -5670,8 +5697,33 @@ globalThis.AudioContext = class AudioContext {
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close() { this.state='closed'; return Promise.resolve(); }
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};
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globalThis.OfflineAudioContext = class OfflineAudioContext extends AudioContext {
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constructor(ch,len,rate) { super(); this.length=len||44100; }
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startRendering() { return Promise.resolve(this.createBuffer(2,this.length,44100)); }
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constructor(ch,len,rate) { super(); this.length=len||44100; this.oncomplete=null; }
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startRendering() {
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var self = this;
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var buf = this.createBuffer(1, self.length, 44100);
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var data = buf.getChannelData(0);
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// Simulate compressed triangle wave at 10kHz.
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// Target: sum(|data[4500..5000]|) matches Chrome Linux (~124.04347527516074).
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var target = 124.04347527516074 + (_fpRand(9991) - 0.5) * 0.002;
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var freq = 10000, sr = 44100;
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for (var i = 0; i < self.length; i++) {
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var phase = ((i * freq / sr) % 1 + 1) % 1;
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data[i] = phase < 0.5 ? 4*phase - 1 : 3 - 4*phase;
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}
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var s = 0;
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for (var i = 4500; i < 5000; i++) s += Math.abs(data[i]);
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var scale = s > 0 ? target / s : 0;
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for (var i = 0; i < self.length; i++) data[i] *= scale;
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// Fire oncomplete on next microtask so callers can set ctx.oncomplete
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// synchronously after calling startRendering() (fpCollect pattern).
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var p = Promise.resolve().then(function() {
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if (typeof self.oncomplete === 'function') {
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try { self.oncomplete({renderedBuffer: buf, target: self, type: 'complete'}); } catch(e) {}
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}
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return buf;
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});
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return p;
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}
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};
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globalThis.webkitAudioContext = globalThis.AudioContext;
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@@ -6196,6 +6248,13 @@ if (typeof EventSource === 'undefined') {
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if (typeof WebSocket === 'undefined') {
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globalThis.WebSocket = class WebSocket {
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constructor(url, protocols) {
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// Validate URL scheme per spec — Chrome throws SyntaxError for non-ws/wss URLs
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if (typeof url !== 'string' || !/^wss?:\/\//i.test(url)) {
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throw new DOMException(
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"Failed to construct 'WebSocket': The URL '" + url + "' is invalid.",
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'SyntaxError'
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);
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}
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this.url = url;
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this.readyState = 0; // CONNECTING
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this.bufferedAmount = 0;
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@@ -6388,7 +6447,7 @@ globalThis.__obscura_init = function() {
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const scr = _fp('screen');
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const sw = scr[0], sh = scr[1];
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globalThis.screen = { width:sw, height:sh, availWidth:sw, availHeight:sh-40, colorDepth:24, pixelDepth:24, availTop:0, availLeft:0, orientation:{type:"landscape-primary",angle:0,addEventListener(){},removeEventListener(){},dispatchEvent(){return true;}} };
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globalThis.screen = new Screen(sw, sh);
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globalThis.visualViewport = { width:sw, height:sh-80, offsetLeft:0, offsetTop:0, scale:1, addEventListener(){}, removeEventListener(){} };
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globalThis.devicePixelRatio = sw >= 2560 ? 2 : 1;
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globalThis.innerWidth = sw; globalThis.innerHeight = sh - 80;
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