Разрешить одновременное использование обычной и виртуальной камеры

experiments/issue-2-analysis.md

@@ -0,0 +1,85 @@
+# Issue #2 Root Cause Analysis
+
+## Problem Statement
+Users cannot use normal and virtual cameras simultaneously. When both are enabled, a registration popup appears.
+
+## Root Cause
+
+### 1. Virtual Camera Detection System
+**Location:** `test/test_1.2.js:7`
+
+The application includes a comprehensive virtual camera detection system (FCN object) with:
+- **60+ blocked virtual camera names** including: Snap Camera, OBS Virtual Camera, ManyCam, DroidCam, etc.
+- **Validation functions:**
+  - `FCN.isValid(cameraLabel)` - Returns `false` if camera matches blocked list
+  - `FCN.isSuspicious(cameraLabel)` - Returns `true` for suspicious patterns
+
+### 2. Camera Enumeration Blocking
+**Location:** `dist/preload.js:54-55`
+
+When cameras are enumerated, Snap Camera is specifically blocked:
+```javascript
+if (/Snap Camera/.test(d))
+  return 'asdfasjdcnawecaseaec'  // Returns fake/obfuscated name
+```
+
+### 3. Virtual Camera Rejection Logic
+**Location:** `test/test3.js:28863-28868`
+
+During getUserMedia(), the code validates all camera tracks:
+```javascript
+null == blogger["allowFakeWebcam"] && u["filter"]((function(e) {
+    return y(e["label"]),
+        FCN["isValid"](e["label"])
+}))["length"] !== u["length"]
+```
+
+**What this does:**
+- If `blogger["allowFakeWebcam"]` is `null` or `false` (default is `false`)
+- AND the number of valid cameras doesn't match total cameras
+- Then it throws an error (code "0x2a0")
+- This error triggers the registration popup
+
+### 4. Default Configuration
+**Location:** `test/test3.js:27752`
+
+```javascript
+i["allowFakeWebcam"] = !1  // Default is false
+```
+
+However, at line 27762, there's a blogger configuration that sets it to `true`:
+```javascript
+r["allowFakeWebcam"] = !0  // true for certain bloggers
+```
+
+## The Flow
+
+1. User has both normal camera + virtual camera (e.g., Snap Camera)
+2. Application enumerates all media devices
+3. Virtual camera is detected and flagged by FCN validation
+4. Since `allowFakeWebcam` is `false` by default
+5. Validation fails when virtual camera is present
+6. Error is thrown
+7. Registration popup appears as anti-fraud measure
+
+## Solution
+
+Change the default `allowFakeWebcam` setting from `false` to `true` to allow virtual cameras.
+
+**File to modify:** `test/test3.js:27752`
+**Change:** `i["allowFakeWebcam"] = !1` → `i["allowFakeWebcam"] = !0`
+
+This will allow users to use both normal and virtual cameras simultaneously without triggering the registration popup.
+
+## Alternative Solutions Considered
+
+1. **Remove virtual camera from blocked list** - Not ideal, as it's part of a comprehensive security system
+2. **Modify validation logic** - Too invasive, affects anti-fraud measures
+3. **Change default setting** - ✓ Cleanest solution, minimal impact
+
+## Security Implications
+
+Allowing virtual cameras reduces anti-fraud protection. However:
+- Users should have freedom to use legitimate tools like OBS for streaming
+- Registration popup can still be triggered by other fraud indicators
+- This is a user experience vs security tradeoff

test/test3.js

@@ -27749,7 +27749,7 @@ CryptoJS["lib"]["Cipher"] || function(e) {
         this["Blogger"] = function() {
             var n, a, f = e,
                 i = {};
-            i["allowFakeWebcam"] = !1,
+            i["allowFakeWebcam"] = !0,
                 i["allowVPN"] = !0,
                 i["hideWatermark"] = !1,
                 i["originId"] = 0,